diff --git a/api.c b/api.c
deleted file mode 100644
index 0c4732e..0000000
--- a/api.c
+++ /dev/null
@@ -1,1392 +0,0 @@
-
-#include "yaml_private.h"
-
-/*
- * Get the library version.
- */
-
-YAML_DECLARE(const char *)
-yaml_get_version_string(void)
-{
-    return YAML_VERSION_STRING;
-}
-
-/*
- * Get the library version numbers.
- */
-
-YAML_DECLARE(void)
-yaml_get_version(int *major, int *minor, int *patch)
-{
-    *major = YAML_VERSION_MAJOR;
-    *minor = YAML_VERSION_MINOR;
-    *patch = YAML_VERSION_PATCH;
-}
-
-/*
- * Allocate a dynamic memory block.
- */
-
-YAML_DECLARE(void *)
-yaml_malloc(size_t size)
-{
-    return malloc(size ? size : 1);
-}
-
-/*
- * Reallocate a dynamic memory block.
- */
-
-YAML_DECLARE(void *)
-yaml_realloc(void *ptr, size_t size)
-{
-    return ptr ? realloc(ptr, size ? size : 1) : malloc(size ? size : 1);
-}
-
-/*
- * Free a dynamic memory block.
- */
-
-YAML_DECLARE(void)
-yaml_free(void *ptr)
-{
-    if (ptr) free(ptr);
-}
-
-/*
- * Duplicate a string.
- */
-
-YAML_DECLARE(yaml_char_t *)
-yaml_strdup(const yaml_char_t *str)
-{
-    if (!str)
-        return NULL;
-
-    return (yaml_char_t *)strdup((char *)str);
-}
-
-/*
- * Extend a string.
- */
-
-YAML_DECLARE(int)
-yaml_string_extend(yaml_char_t **start,
-        yaml_char_t **pointer, yaml_char_t **end)
-{
-    yaml_char_t *new_start = yaml_realloc(*start, (*end - *start)*2);
-
-    if (!new_start) return 0;
-
-    memset(new_start + (*end - *start), 0, *end - *start);
-
-    *pointer = new_start + (*pointer - *start);
-    *end = new_start + (*end - *start)*2;
-    *start = new_start;
-
-    return 1;
-}
-
-/*
- * Append a string B to a string A.
- */
-
-YAML_DECLARE(int)
-yaml_string_join(
-        yaml_char_t **a_start, yaml_char_t **a_pointer, yaml_char_t **a_end,
-        yaml_char_t **b_start, yaml_char_t **b_pointer, yaml_char_t **b_end)
-{
-    if (*b_start == *b_pointer)
-        return 1;
-
-    while (*a_end - *a_pointer <= *b_pointer - *b_start) {
-        if (!yaml_string_extend(a_start, a_pointer, a_end))
-            return 0;
-    }
-
-    memcpy(*a_pointer, *b_start, *b_pointer - *b_start);
-    *a_pointer += *b_pointer - *b_start;
-
-    return 1;
-}
-
-/*
- * Extend a stack.
- */
-
-YAML_DECLARE(int)
-yaml_stack_extend(void **start, void **top, void **end)
-{
-    void *new_start = yaml_realloc(*start, ((char *)*end - (char *)*start)*2);
-
-    if (!new_start) return 0;
-
-    *top = (char *)new_start + ((char *)*top - (char *)*start);
-    *end = (char *)new_start + ((char *)*end - (char *)*start)*2;
-    *start = new_start;
-
-    return 1;
-}
-
-/*
- * Extend or move a queue.
- */
-
-YAML_DECLARE(int)
-yaml_queue_extend(void **start, void **head, void **tail, void **end)
-{
-    /* Check if we need to resize the queue. */
-
-    if (*start == *head && *tail == *end) {
-        void *new_start = yaml_realloc(*start,
-                ((char *)*end - (char *)*start)*2);
-
-        if (!new_start) return 0;
-
-        *head = (char *)new_start + ((char *)*head - (char *)*start);
-        *tail = (char *)new_start + ((char *)*tail - (char *)*start);
-        *end = (char *)new_start + ((char *)*end - (char *)*start)*2;
-        *start = new_start;
-    }
-
-    /* Check if we need to move the queue at the beginning of the buffer. */
-
-    if (*tail == *end) {
-        if (*head != *tail) {
-            memmove(*start, *head, (char *)*tail - (char *)*head);
-        }
-        *tail = (char *)*tail - (char *)*head + (char *)*start;
-        *head = *start;
-    }
-
-    return 1;
-}
-
-
-/*
- * Create a new parser object.
- */
-
-YAML_DECLARE(int)
-yaml_parser_initialize(yaml_parser_t *parser)
-{
-    assert(parser);     /* Non-NULL parser object expected. */
-
-    memset(parser, 0, sizeof(yaml_parser_t));
-    if (!BUFFER_INIT(parser, parser->raw_buffer, INPUT_RAW_BUFFER_SIZE))
-        goto error;
-    if (!BUFFER_INIT(parser, parser->buffer, INPUT_BUFFER_SIZE))
-        goto error;
-    if (!QUEUE_INIT(parser, parser->tokens, INITIAL_QUEUE_SIZE))
-        goto error;
-    if (!STACK_INIT(parser, parser->indents, INITIAL_STACK_SIZE))
-        goto error;
-    if (!STACK_INIT(parser, parser->simple_keys, INITIAL_STACK_SIZE))
-        goto error;
-    if (!STACK_INIT(parser, parser->states, INITIAL_STACK_SIZE))
-        goto error;
-    if (!STACK_INIT(parser, parser->marks, INITIAL_STACK_SIZE))
-        goto error;
-    if (!STACK_INIT(parser, parser->tag_directives, INITIAL_STACK_SIZE))
-        goto error;
-
-    return 1;
-
-error:
-
-    BUFFER_DEL(parser, parser->raw_buffer);
-    BUFFER_DEL(parser, parser->buffer);
-    QUEUE_DEL(parser, parser->tokens);
-    STACK_DEL(parser, parser->indents);
-    STACK_DEL(parser, parser->simple_keys);
-    STACK_DEL(parser, parser->states);
-    STACK_DEL(parser, parser->marks);
-    STACK_DEL(parser, parser->tag_directives);
-
-    return 0;
-}
-
-/*
- * Destroy a parser object.
- */
-
-YAML_DECLARE(void)
-yaml_parser_delete(yaml_parser_t *parser)
-{
-    assert(parser); /* Non-NULL parser object expected. */
-
-    BUFFER_DEL(parser, parser->raw_buffer);
-    BUFFER_DEL(parser, parser->buffer);
-    while (!QUEUE_EMPTY(parser, parser->tokens)) {
-        yaml_token_delete(&DEQUEUE(parser, parser->tokens));
-    }
-    QUEUE_DEL(parser, parser->tokens);
-    STACK_DEL(parser, parser->indents);
-    STACK_DEL(parser, parser->simple_keys);
-    STACK_DEL(parser, parser->states);
-    STACK_DEL(parser, parser->marks);
-    while (!STACK_EMPTY(parser, parser->tag_directives)) {
-        yaml_tag_directive_t tag_directive = POP(parser, parser->tag_directives);
-        yaml_free(tag_directive.handle);
-        yaml_free(tag_directive.prefix);
-    }
-    STACK_DEL(parser, parser->tag_directives);
-
-    memset(parser, 0, sizeof(yaml_parser_t));
-}
-
-/*
- * String read handler.
- */
-
-static int
-yaml_string_read_handler(void *data, unsigned char *buffer, size_t size,
-        size_t *size_read)
-{
-    yaml_parser_t *parser = data;
-
-    if (parser->input.string.current == parser->input.string.end) {
-        *size_read = 0;
-        return 1;
-    }
-
-    if (size > (size_t)(parser->input.string.end
-                - parser->input.string.current)) {
-        size = parser->input.string.end - parser->input.string.current;
-    }
-
-    memcpy(buffer, parser->input.string.current, size);
-    parser->input.string.current += size;
-    *size_read = size;
-    return 1;
-}
-
-/*
- * File read handler.
- */
-
-static int
-yaml_file_read_handler(void *data, unsigned char *buffer, size_t size,
-        size_t *size_read)
-{
-    yaml_parser_t *parser = data;
-
-    *size_read = fread(buffer, 1, size, parser->input.file);
-    return !ferror(parser->input.file);
-}
-
-/*
- * Set a string input.
- */
-
-YAML_DECLARE(void)
-yaml_parser_set_input_string(yaml_parser_t *parser,
-        const unsigned char *input, size_t size)
-{
-    assert(parser); /* Non-NULL parser object expected. */
-    assert(!parser->read_handler);  /* You can set the source only once. */
-    assert(input);  /* Non-NULL input string expected. */
-
-    parser->read_handler = yaml_string_read_handler;
-    parser->read_handler_data = parser;
-
-    parser->input.string.start = input;
-    parser->input.string.current = input;
-    parser->input.string.end = input+size;
-}
-
-/*
- * Set a file input.
- */
-
-YAML_DECLARE(void)
-yaml_parser_set_input_file(yaml_parser_t *parser, FILE *file)
-{
-    assert(parser); /* Non-NULL parser object expected. */
-    assert(!parser->read_handler);  /* You can set the source only once. */
-    assert(file);   /* Non-NULL file object expected. */
-
-    parser->read_handler = yaml_file_read_handler;
-    parser->read_handler_data = parser;
-
-    parser->input.file = file;
-}
-
-/*
- * Set a generic input.
- */
-
-YAML_DECLARE(void)
-yaml_parser_set_input(yaml_parser_t *parser,
-        yaml_read_handler_t *handler, void *data)
-{
-    assert(parser); /* Non-NULL parser object expected. */
-    assert(!parser->read_handler);  /* You can set the source only once. */
-    assert(handler);    /* Non-NULL read handler expected. */
-
-    parser->read_handler = handler;
-    parser->read_handler_data = data;
-}
-
-/*
- * Set the source encoding.
- */
-
-YAML_DECLARE(void)
-yaml_parser_set_encoding(yaml_parser_t *parser, yaml_encoding_t encoding)
-{
-    assert(parser); /* Non-NULL parser object expected. */
-    assert(!parser->encoding); /* Encoding is already set or detected. */
-
-    parser->encoding = encoding;
-}
-
-/*
- * Create a new emitter object.
- */
-
-YAML_DECLARE(int)
-yaml_emitter_initialize(yaml_emitter_t *emitter)
-{
-    assert(emitter);    /* Non-NULL emitter object expected. */
-
-    memset(emitter, 0, sizeof(yaml_emitter_t));
-    if (!BUFFER_INIT(emitter, emitter->buffer, OUTPUT_BUFFER_SIZE))
-        goto error;
-    if (!BUFFER_INIT(emitter, emitter->raw_buffer, OUTPUT_RAW_BUFFER_SIZE))
-        goto error;
-    if (!STACK_INIT(emitter, emitter->states, INITIAL_STACK_SIZE))
-        goto error;
-    if (!QUEUE_INIT(emitter, emitter->events, INITIAL_QUEUE_SIZE))
-        goto error;
-    if (!STACK_INIT(emitter, emitter->indents, INITIAL_STACK_SIZE))
-        goto error;
-    if (!STACK_INIT(emitter, emitter->tag_directives, INITIAL_STACK_SIZE))
-        goto error;
-
-    return 1;
-
-error:
-
-    BUFFER_DEL(emitter, emitter->buffer);
-    BUFFER_DEL(emitter, emitter->raw_buffer);
-    STACK_DEL(emitter, emitter->states);
-    QUEUE_DEL(emitter, emitter->events);
-    STACK_DEL(emitter, emitter->indents);
-    STACK_DEL(emitter, emitter->tag_directives);
-
-    return 0;
-}
-
-/*
- * Destroy an emitter object.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_delete(yaml_emitter_t *emitter)
-{
-    assert(emitter);    /* Non-NULL emitter object expected. */
-
-    BUFFER_DEL(emitter, emitter->buffer);
-    BUFFER_DEL(emitter, emitter->raw_buffer);
-    STACK_DEL(emitter, emitter->states);
-    while (!QUEUE_EMPTY(emitter, emitter->events)) {
-        yaml_event_delete(&DEQUEUE(emitter, emitter->events));
-    }
-    QUEUE_DEL(emitter, emitter->events);
-    STACK_DEL(emitter, emitter->indents);
-    while (!STACK_EMPTY(empty, emitter->tag_directives)) {
-        yaml_tag_directive_t tag_directive = POP(emitter, emitter->tag_directives);
-        yaml_free(tag_directive.handle);
-        yaml_free(tag_directive.prefix);
-    }
-    STACK_DEL(emitter, emitter->tag_directives);
-    yaml_free(emitter->anchors);
-
-    memset(emitter, 0, sizeof(yaml_emitter_t));
-}
-
-/*
- * String write handler.
- */
-
-static int
-yaml_string_write_handler(void *data, unsigned char *buffer, size_t size)
-{
-    yaml_emitter_t *emitter = data;
-
-    if (emitter->output.string.size + *emitter->output.string.size_written
-            < size) {
-        memcpy(emitter->output.string.buffer
-                + *emitter->output.string.size_written,
-                buffer,
-                emitter->output.string.size
-                - *emitter->output.string.size_written);
-        *emitter->output.string.size_written = emitter->output.string.size;
-        return 0;
-    }
-
-    memcpy(emitter->output.string.buffer
-            + *emitter->output.string.size_written, buffer, size);
-    *emitter->output.string.size_written += size;
-    return 1;
-}
-
-/*
- * File write handler.
- */
-
-static int
-yaml_file_write_handler(void *data, unsigned char *buffer, size_t size)
-{
-    yaml_emitter_t *emitter = data;
-
-    return (fwrite(buffer, 1, size, emitter->output.file) == size);
-}
-/*
- * Set a string output.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_output_string(yaml_emitter_t *emitter,
-        unsigned char *output, size_t size, size_t *size_written)
-{
-    assert(emitter);    /* Non-NULL emitter object expected. */
-    assert(!emitter->write_handler);    /* You can set the output only once. */
-    assert(output);     /* Non-NULL output string expected. */
-
-    emitter->write_handler = yaml_string_write_handler;
-    emitter->write_handler_data = emitter;
-
-    emitter->output.string.buffer = output;
-    emitter->output.string.size = size;
-    emitter->output.string.size_written = size_written;
-    *size_written = 0;
-}
-
-/*
- * Set a file output.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_output_file(yaml_emitter_t *emitter, FILE *file)
-{
-    assert(emitter);    /* Non-NULL emitter object expected. */
-    assert(!emitter->write_handler);    /* You can set the output only once. */
-    assert(file);       /* Non-NULL file object expected. */
-
-    emitter->write_handler = yaml_file_write_handler;
-    emitter->write_handler_data = emitter;
-
-    emitter->output.file = file;
-}
-
-/*
- * Set a generic output handler.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_output(yaml_emitter_t *emitter,
-        yaml_write_handler_t *handler, void *data)
-{
-    assert(emitter);    /* Non-NULL emitter object expected. */
-    assert(!emitter->write_handler);    /* You can set the output only once. */
-    assert(handler);    /* Non-NULL handler object expected. */
-
-    emitter->write_handler = handler;
-    emitter->write_handler_data = data;
-}
-
-/*
- * Set the output encoding.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_encoding(yaml_emitter_t *emitter, yaml_encoding_t encoding)
-{
-    assert(emitter);    /* Non-NULL emitter object expected. */
-    assert(!emitter->encoding);     /* You can set encoding only once. */
-
-    emitter->encoding = encoding;
-}
-
-/*
- * Set the canonical output style.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_canonical(yaml_emitter_t *emitter, int canonical)
-{
-    assert(emitter);    /* Non-NULL emitter object expected. */
-
-    emitter->canonical = (canonical != 0);
-}
-
-/*
- * Set the indentation increment.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_indent(yaml_emitter_t *emitter, int indent)
-{
-    assert(emitter);    /* Non-NULL emitter object expected. */
-
-    emitter->best_indent = (1 < indent && indent < 10) ? indent : 2;
-}
-
-/*
- * Set the preferred line width.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_width(yaml_emitter_t *emitter, int width)
-{
-    assert(emitter);    /* Non-NULL emitter object expected. */
-
-    emitter->best_width = (width >= 0) ? width : -1;
-}
-
-/*
- * Set if unescaped non-ASCII characters are allowed.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_unicode(yaml_emitter_t *emitter, int unicode)
-{
-    assert(emitter);    /* Non-NULL emitter object expected. */
-
-    emitter->unicode = (unicode != 0);
-}
-
-/*
- * Set the preferred line break character.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_break(yaml_emitter_t *emitter, yaml_break_t line_break)
-{
-    assert(emitter);    /* Non-NULL emitter object expected. */
-
-    emitter->line_break = line_break;
-}
-
-/*
- * Destroy a token object.
- */
-
-YAML_DECLARE(void)
-yaml_token_delete(yaml_token_t *token)
-{
-    assert(token);  /* Non-NULL token object expected. */
-
-    switch (token->type)
-    {
-        case YAML_TAG_DIRECTIVE_TOKEN:
-            yaml_free(token->data.tag_directive.handle);
-            yaml_free(token->data.tag_directive.prefix);
-            break;
-
-        case YAML_ALIAS_TOKEN:
-            yaml_free(token->data.alias.value);
-            break;
-
-        case YAML_ANCHOR_TOKEN:
-            yaml_free(token->data.anchor.value);
-            break;
-
-        case YAML_TAG_TOKEN:
-            yaml_free(token->data.tag.handle);
-            yaml_free(token->data.tag.suffix);
-            break;
-
-        case YAML_SCALAR_TOKEN:
-            yaml_free(token->data.scalar.value);
-            break;
-
-        default:
-            break;
-    }
-
-    memset(token, 0, sizeof(yaml_token_t));
-}
-
-/*
- * Check if a string is a valid UTF-8 sequence.
- *
- * Check 'reader.c' for more details on UTF-8 encoding.
- */
-
-static int
-yaml_check_utf8(yaml_char_t *start, size_t length)
-{
-    yaml_char_t *end = start+length;
-    yaml_char_t *pointer = start;
-
-    while (pointer < end) {
-        unsigned char octet;
-        unsigned int width;
-        unsigned int value;
-        size_t k;
-
-        octet = pointer[0];
-        width = (octet & 0x80) == 0x00 ? 1 :
-                (octet & 0xE0) == 0xC0 ? 2 :
-                (octet & 0xF0) == 0xE0 ? 3 :
-                (octet & 0xF8) == 0xF0 ? 4 : 0;
-        value = (octet & 0x80) == 0x00 ? octet & 0x7F :
-                (octet & 0xE0) == 0xC0 ? octet & 0x1F :
-                (octet & 0xF0) == 0xE0 ? octet & 0x0F :
-                (octet & 0xF8) == 0xF0 ? octet & 0x07 : 0;
-        if (!width) return 0;
-        if (pointer+width > end) return 0;
-        for (k = 1; k < width; k ++) {
-            octet = pointer[k];
-            if ((octet & 0xC0) != 0x80) return 0;
-            value = (value << 6) + (octet & 0x3F);
-        }
-        if (!((width == 1) ||
-            (width == 2 && value >= 0x80) ||
-            (width == 3 && value >= 0x800) ||
-            (width == 4 && value >= 0x10000))) return 0;
-
-        pointer += width;
-    }
-
-    return 1;
-}
-
-/*
- * Create STREAM-START.
- */
-
-YAML_DECLARE(int)
-yaml_stream_start_event_initialize(yaml_event_t *event,
-        yaml_encoding_t encoding)
-{
-    yaml_mark_t mark = { 0, 0, 0 };
-
-    assert(event);  /* Non-NULL event object is expected. */
-
-    STREAM_START_EVENT_INIT(*event, encoding, mark, mark);
-
-    return 1;
-}
-
-/*
- * Create STREAM-END.
- */
-
-YAML_DECLARE(int)
-yaml_stream_end_event_initialize(yaml_event_t *event)
-{
-    yaml_mark_t mark = { 0, 0, 0 };
-
-    assert(event);  /* Non-NULL event object is expected. */
-
-    STREAM_END_EVENT_INIT(*event, mark, mark);
-
-    return 1;
-}
-
-/*
- * Create DOCUMENT-START.
- */
-
-YAML_DECLARE(int)
-yaml_document_start_event_initialize(yaml_event_t *event,
-        yaml_version_directive_t *version_directive,
-        yaml_tag_directive_t *tag_directives_start,
-        yaml_tag_directive_t *tag_directives_end,
-        int implicit)
-{
-    struct {
-        yaml_error_type_t error;
-    } context;
-    yaml_mark_t mark = { 0, 0, 0 };
-    yaml_version_directive_t *version_directive_copy = NULL;
-    struct {
-        yaml_tag_directive_t *start;
-        yaml_tag_directive_t *end;
-        yaml_tag_directive_t *top;
-    } tag_directives_copy = { NULL, NULL, NULL };
-    yaml_tag_directive_t value = { NULL, NULL };
-
-    assert(event);          /* Non-NULL event object is expected. */
-    assert((tag_directives_start && tag_directives_end) ||
-            (tag_directives_start == tag_directives_end));
-                            /* Valid tag directives are expected. */
-
-    if (version_directive) {
-        version_directive_copy = yaml_malloc(sizeof(yaml_version_directive_t));
-        if (!version_directive_copy) goto error;
-        version_directive_copy->major = version_directive->major;
-        version_directive_copy->minor = version_directive->minor;
-    }
-
-    if (tag_directives_start != tag_directives_end) {
-        yaml_tag_directive_t *tag_directive;
-        if (!STACK_INIT(&context, tag_directives_copy, INITIAL_STACK_SIZE))
-            goto error;
-        for (tag_directive = tag_directives_start;
-                tag_directive != tag_directives_end; tag_directive ++) {
-            assert(tag_directive->handle);
-            assert(tag_directive->prefix);
-            if (!yaml_check_utf8(tag_directive->handle,
-                        strlen((char *)tag_directive->handle)))
-                goto error;
-            if (!yaml_check_utf8(tag_directive->prefix,
-                        strlen((char *)tag_directive->prefix)))
-                goto error;
-            value.handle = yaml_strdup(tag_directive->handle);
-            value.prefix = yaml_strdup(tag_directive->prefix);
-            if (!value.handle || !value.prefix) goto error;
-            if (!PUSH(&context, tag_directives_copy, value))
-                goto error;
-            value.handle = NULL;
-            value.prefix = NULL;
-        }
-    }
-
-    DOCUMENT_START_EVENT_INIT(*event, version_directive_copy,
-            tag_directives_copy.start, tag_directives_copy.top,
-            implicit, mark, mark);
-
-    return 1;
-
-error:
-    yaml_free(version_directive_copy);
-    while (!STACK_EMPTY(context, tag_directives_copy)) {
-        yaml_tag_directive_t value = POP(context, tag_directives_copy);
-        yaml_free(value.handle);
-        yaml_free(value.prefix);
-    }
-    STACK_DEL(context, tag_directives_copy);
-    yaml_free(value.handle);
-    yaml_free(value.prefix);
-
-    return 0;
-}
-
-/*
- * Create DOCUMENT-END.
- */
-
-YAML_DECLARE(int)
-yaml_document_end_event_initialize(yaml_event_t *event, int implicit)
-{
-    yaml_mark_t mark = { 0, 0, 0 };
-
-    assert(event);      /* Non-NULL emitter object is expected. */
-
-    DOCUMENT_END_EVENT_INIT(*event, implicit, mark, mark);
-
-    return 1;
-}
-
-/*
- * Create ALIAS.
- */
-
-YAML_DECLARE(int)
-yaml_alias_event_initialize(yaml_event_t *event, yaml_char_t *anchor)
-{
-    yaml_mark_t mark = { 0, 0, 0 };
-    yaml_char_t *anchor_copy = NULL;
-
-    assert(event);      /* Non-NULL event object is expected. */
-    assert(anchor);     /* Non-NULL anchor is expected. */
-
-    if (!yaml_check_utf8(anchor, strlen((char *)anchor))) return 0;
-
-    anchor_copy = yaml_strdup(anchor);
-    if (!anchor_copy)
-        return 0;
-
-    ALIAS_EVENT_INIT(*event, anchor_copy, mark, mark);
-
-    return 1;
-}
-
-/*
- * Create SCALAR.
- */
-
-YAML_DECLARE(int)
-yaml_scalar_event_initialize(yaml_event_t *event,
-        yaml_char_t *anchor, yaml_char_t *tag,
-        yaml_char_t *value, int length,
-        int plain_implicit, int quoted_implicit,
-        yaml_scalar_style_t style)
-{
-    yaml_mark_t mark = { 0, 0, 0 };
-    yaml_char_t *anchor_copy = NULL;
-    yaml_char_t *tag_copy = NULL;
-    yaml_char_t *value_copy = NULL;
-
-    assert(event);      /* Non-NULL event object is expected. */
-    assert(value);      /* Non-NULL anchor is expected. */
-
-    if (anchor) {
-        if (!yaml_check_utf8(anchor, strlen((char *)anchor))) goto error;
-        anchor_copy = yaml_strdup(anchor);
-        if (!anchor_copy) goto error;
-    }
-
-    if (tag) {
-        if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;
-        tag_copy = yaml_strdup(tag);
-        if (!tag_copy) goto error;
-    }
-
-    if (length < 0) {
-        length = strlen((char *)value);
-    }
-
-    if (!yaml_check_utf8(value, length)) goto error;
-    value_copy = yaml_malloc(length+1);
-    if (!value_copy) goto error;
-    memcpy(value_copy, value, length);
-    value_copy[length] = '\0';
-
-    SCALAR_EVENT_INIT(*event, anchor_copy, tag_copy, value_copy, length,
-            plain_implicit, quoted_implicit, style, mark, mark);
-
-    return 1;
-
-error:
-    yaml_free(anchor_copy);
-    yaml_free(tag_copy);
-    yaml_free(value_copy);
-
-    return 0;
-}
-
-/*
- * Create SEQUENCE-START.
- */
-
-YAML_DECLARE(int)
-yaml_sequence_start_event_initialize(yaml_event_t *event,
-        yaml_char_t *anchor, yaml_char_t *tag, int implicit,
-        yaml_sequence_style_t style)
-{
-    yaml_mark_t mark = { 0, 0, 0 };
-    yaml_char_t *anchor_copy = NULL;
-    yaml_char_t *tag_copy = NULL;
-
-    assert(event);      /* Non-NULL event object is expected. */
-
-    if (anchor) {
-        if (!yaml_check_utf8(anchor, strlen((char *)anchor))) goto error;
-        anchor_copy = yaml_strdup(anchor);
-        if (!anchor_copy) goto error;
-    }
-
-    if (tag) {
-        if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;
-        tag_copy = yaml_strdup(tag);
-        if (!tag_copy) goto error;
-    }
-
-    SEQUENCE_START_EVENT_INIT(*event, anchor_copy, tag_copy,
-            implicit, style, mark, mark);
-
-    return 1;
-
-error:
-    yaml_free(anchor_copy);
-    yaml_free(tag_copy);
-
-    return 0;
-}
-
-/*
- * Create SEQUENCE-END.
- */
-
-YAML_DECLARE(int)
-yaml_sequence_end_event_initialize(yaml_event_t *event)
-{
-    yaml_mark_t mark = { 0, 0, 0 };
-
-    assert(event);      /* Non-NULL event object is expected. */
-
-    SEQUENCE_END_EVENT_INIT(*event, mark, mark);
-
-    return 1;
-}
-
-/*
- * Create MAPPING-START.
- */
-
-YAML_DECLARE(int)
-yaml_mapping_start_event_initialize(yaml_event_t *event,
-        yaml_char_t *anchor, yaml_char_t *tag, int implicit,
-        yaml_mapping_style_t style)
-{
-    yaml_mark_t mark = { 0, 0, 0 };
-    yaml_char_t *anchor_copy = NULL;
-    yaml_char_t *tag_copy = NULL;
-
-    assert(event);      /* Non-NULL event object is expected. */
-
-    if (anchor) {
-        if (!yaml_check_utf8(anchor, strlen((char *)anchor))) goto error;
-        anchor_copy = yaml_strdup(anchor);
-        if (!anchor_copy) goto error;
-    }
-
-    if (tag) {
-        if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;
-        tag_copy = yaml_strdup(tag);
-        if (!tag_copy) goto error;
-    }
-
-    MAPPING_START_EVENT_INIT(*event, anchor_copy, tag_copy,
-            implicit, style, mark, mark);
-
-    return 1;
-
-error:
-    yaml_free(anchor_copy);
-    yaml_free(tag_copy);
-
-    return 0;
-}
-
-/*
- * Create MAPPING-END.
- */
-
-YAML_DECLARE(int)
-yaml_mapping_end_event_initialize(yaml_event_t *event)
-{
-    yaml_mark_t mark = { 0, 0, 0 };
-
-    assert(event);      /* Non-NULL event object is expected. */
-
-    MAPPING_END_EVENT_INIT(*event, mark, mark);
-
-    return 1;
-}
-
-/*
- * Destroy an event object.
- */
-
-YAML_DECLARE(void)
-yaml_event_delete(yaml_event_t *event)
-{
-    yaml_tag_directive_t *tag_directive;
-
-    assert(event);  /* Non-NULL event object expected. */
-
-    switch (event->type)
-    {
-        case YAML_DOCUMENT_START_EVENT:
-            yaml_free(event->data.document_start.version_directive);
-            for (tag_directive = event->data.document_start.tag_directives.start;
-                    tag_directive != event->data.document_start.tag_directives.end;
-                    tag_directive++) {
-                yaml_free(tag_directive->handle);
-                yaml_free(tag_directive->prefix);
-            }
-            yaml_free(event->data.document_start.tag_directives.start);
-            break;
-
-        case YAML_ALIAS_EVENT:
-            yaml_free(event->data.alias.anchor);
-            break;
-
-        case YAML_SCALAR_EVENT:
-            yaml_free(event->data.scalar.anchor);
-            yaml_free(event->data.scalar.tag);
-            yaml_free(event->data.scalar.value);
-            break;
-
-        case YAML_SEQUENCE_START_EVENT:
-            yaml_free(event->data.sequence_start.anchor);
-            yaml_free(event->data.sequence_start.tag);
-            break;
-
-        case YAML_MAPPING_START_EVENT:
-            yaml_free(event->data.mapping_start.anchor);
-            yaml_free(event->data.mapping_start.tag);
-            break;
-
-        default:
-            break;
-    }
-
-    memset(event, 0, sizeof(yaml_event_t));
-}
-
-/*
- * Create a document object.
- */
-
-YAML_DECLARE(int)
-yaml_document_initialize(yaml_document_t *document,
-        yaml_version_directive_t *version_directive,
-        yaml_tag_directive_t *tag_directives_start,
-        yaml_tag_directive_t *tag_directives_end,
-        int start_implicit, int end_implicit)
-{
-    struct {
-        yaml_error_type_t error;
-    } context;
-    struct {
-        yaml_node_t *start;
-        yaml_node_t *end;
-        yaml_node_t *top;
-    } nodes = { NULL, NULL, NULL };
-    yaml_version_directive_t *version_directive_copy = NULL;
-    struct {
-        yaml_tag_directive_t *start;
-        yaml_tag_directive_t *end;
-        yaml_tag_directive_t *top;
-    } tag_directives_copy = { NULL, NULL, NULL };
-    yaml_tag_directive_t value = { NULL, NULL };
-    yaml_mark_t mark = { 0, 0, 0 };
-
-    assert(document);       /* Non-NULL document object is expected. */
-    assert((tag_directives_start && tag_directives_end) ||
-            (tag_directives_start == tag_directives_end));
-                            /* Valid tag directives are expected. */
-
-    if (!STACK_INIT(&context, nodes, INITIAL_STACK_SIZE)) goto error;
-
-    if (version_directive) {
-        version_directive_copy = yaml_malloc(sizeof(yaml_version_directive_t));
-        if (!version_directive_copy) goto error;
-        version_directive_copy->major = version_directive->major;
-        version_directive_copy->minor = version_directive->minor;
-    }
-
-    if (tag_directives_start != tag_directives_end) {
-        yaml_tag_directive_t *tag_directive;
-        if (!STACK_INIT(&context, tag_directives_copy, INITIAL_STACK_SIZE))
-            goto error;
-        for (tag_directive = tag_directives_start;
-                tag_directive != tag_directives_end; tag_directive ++) {
-            assert(tag_directive->handle);
-            assert(tag_directive->prefix);
-            if (!yaml_check_utf8(tag_directive->handle,
-                        strlen((char *)tag_directive->handle)))
-                goto error;
-            if (!yaml_check_utf8(tag_directive->prefix,
-                        strlen((char *)tag_directive->prefix)))
-                goto error;
-            value.handle = yaml_strdup(tag_directive->handle);
-            value.prefix = yaml_strdup(tag_directive->prefix);
-            if (!value.handle || !value.prefix) goto error;
-            if (!PUSH(&context, tag_directives_copy, value))
-                goto error;
-            value.handle = NULL;
-            value.prefix = NULL;
-        }
-    }
-
-    DOCUMENT_INIT(*document, nodes.start, nodes.end, version_directive_copy,
-            tag_directives_copy.start, tag_directives_copy.top,
-            start_implicit, end_implicit, mark, mark);
-
-    return 1;
-
-error:
-    STACK_DEL(&context, nodes);
-    yaml_free(version_directive_copy);
-    while (!STACK_EMPTY(&context, tag_directives_copy)) {
-        yaml_tag_directive_t value = POP(&context, tag_directives_copy);
-        yaml_free(value.handle);
-        yaml_free(value.prefix);
-    }
-    STACK_DEL(&context, tag_directives_copy);
-    yaml_free(value.handle);
-    yaml_free(value.prefix);
-
-    return 0;
-}
-
-/*
- * Destroy a document object.
- */
-
-YAML_DECLARE(void)
-yaml_document_delete(yaml_document_t *document)
-{
-    struct {
-        yaml_error_type_t error;
-    } context;
-    yaml_tag_directive_t *tag_directive;
-
-    context.error = YAML_NO_ERROR;  /* Eliminate a compliler warning. */
-
-    assert(document);   /* Non-NULL document object is expected. */
-
-    while (!STACK_EMPTY(&context, document->nodes)) {
-        yaml_node_t node = POP(&context, document->nodes);
-        yaml_free(node.tag);
-        switch (node.type) {
-            case YAML_SCALAR_NODE:
-                yaml_free(node.data.scalar.value);
-                break;
-            case YAML_SEQUENCE_NODE:
-                STACK_DEL(&context, node.data.sequence.items);
-                break;
-            case YAML_MAPPING_NODE:
-                STACK_DEL(&context, node.data.mapping.pairs);
-                break;
-            default:
-                assert(0);  /* Should not happen. */
-        }
-    }
-    STACK_DEL(&context, document->nodes);
-
-    yaml_free(document->version_directive);
-    for (tag_directive = document->tag_directives.start;
-            tag_directive != document->tag_directives.end;
-            tag_directive++) {
-        yaml_free(tag_directive->handle);
-        yaml_free(tag_directive->prefix);
-    }
-    yaml_free(document->tag_directives.start);
-
-    memset(document, 0, sizeof(yaml_document_t));
-}
-
-/**
- * Get a document node.
- */
-
-YAML_DECLARE(yaml_node_t *)
-yaml_document_get_node(yaml_document_t *document, int index)
-{
-    assert(document);   /* Non-NULL document object is expected. */
-
-    if (index > 0 && document->nodes.start + index <= document->nodes.top) {
-        return document->nodes.start + index - 1;
-    }
-    return NULL;
-}
-
-/**
- * Get the root object.
- */
-
-YAML_DECLARE(yaml_node_t *)
-yaml_document_get_root_node(yaml_document_t *document)
-{
-    assert(document);   /* Non-NULL document object is expected. */
-
-    if (document->nodes.top != document->nodes.start) {
-        return document->nodes.start;
-    }
-    return NULL;
-}
-
-/*
- * Add a scalar node to a document.
- */
-
-YAML_DECLARE(int)
-yaml_document_add_scalar(yaml_document_t *document,
-        yaml_char_t *tag, yaml_char_t *value, int length,
-        yaml_scalar_style_t style)
-{
-    struct {
-        yaml_error_type_t error;
-    } context;
-    yaml_mark_t mark = { 0, 0, 0 };
-    yaml_char_t *tag_copy = NULL;
-    yaml_char_t *value_copy = NULL;
-    yaml_node_t node;
-
-    assert(document);   /* Non-NULL document object is expected. */
-    assert(value);      /* Non-NULL value is expected. */
-
-    if (!tag) {
-        tag = (yaml_char_t *)YAML_DEFAULT_SCALAR_TAG;
-    }
-
-    if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;
-    tag_copy = yaml_strdup(tag);
-    if (!tag_copy) goto error;
-
-    if (length < 0) {
-        length = strlen((char *)value);
-    }
-
-    if (!yaml_check_utf8(value, length)) goto error;
-    value_copy = yaml_malloc(length+1);
-    if (!value_copy) goto error;
-    memcpy(value_copy, value, length);
-    value_copy[length] = '\0';
-
-    SCALAR_NODE_INIT(node, tag_copy, value_copy, length, style, mark, mark);
-    if (!PUSH(&context, document->nodes, node)) goto error;
-
-    return document->nodes.top - document->nodes.start;
-
-error:
-    yaml_free(tag_copy);
-    yaml_free(value_copy);
-
-    return 0;
-}
-
-/*
- * Add a sequence node to a document.
- */
-
-YAML_DECLARE(int)
-yaml_document_add_sequence(yaml_document_t *document,
-        yaml_char_t *tag, yaml_sequence_style_t style)
-{
-    struct {
-        yaml_error_type_t error;
-    } context;
-    yaml_mark_t mark = { 0, 0, 0 };
-    yaml_char_t *tag_copy = NULL;
-    struct {
-        yaml_node_item_t *start;
-        yaml_node_item_t *end;
-        yaml_node_item_t *top;
-    } items = { NULL, NULL, NULL };
-    yaml_node_t node;
-
-    assert(document);   /* Non-NULL document object is expected. */
-
-    if (!tag) {
-        tag = (yaml_char_t *)YAML_DEFAULT_SEQUENCE_TAG;
-    }
-
-    if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;
-    tag_copy = yaml_strdup(tag);
-    if (!tag_copy) goto error;
-
-    if (!STACK_INIT(&context, items, INITIAL_STACK_SIZE)) goto error;
-
-    SEQUENCE_NODE_INIT(node, tag_copy, items.start, items.end,
-            style, mark, mark);
-    if (!PUSH(&context, document->nodes, node)) goto error;
-
-    return document->nodes.top - document->nodes.start;
-
-error:
-    STACK_DEL(&context, items);
-    yaml_free(tag_copy);
-
-    return 0;
-}
-
-/*
- * Add a mapping node to a document.
- */
-
-YAML_DECLARE(int)
-yaml_document_add_mapping(yaml_document_t *document,
-        yaml_char_t *tag, yaml_mapping_style_t style)
-{
-    struct {
-        yaml_error_type_t error;
-    } context;
-    yaml_mark_t mark = { 0, 0, 0 };
-    yaml_char_t *tag_copy = NULL;
-    struct {
-        yaml_node_pair_t *start;
-        yaml_node_pair_t *end;
-        yaml_node_pair_t *top;
-    } pairs = { NULL, NULL, NULL };
-    yaml_node_t node;
-
-    assert(document);   /* Non-NULL document object is expected. */
-
-    if (!tag) {
-        tag = (yaml_char_t *)YAML_DEFAULT_MAPPING_TAG;
-    }
-
-    if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;
-    tag_copy = yaml_strdup(tag);
-    if (!tag_copy) goto error;
-
-    if (!STACK_INIT(&context, pairs, INITIAL_STACK_SIZE)) goto error;
-
-    MAPPING_NODE_INIT(node, tag_copy, pairs.start, pairs.end,
-            style, mark, mark);
-    if (!PUSH(&context, document->nodes, node)) goto error;
-
-    return document->nodes.top - document->nodes.start;
-
-error:
-    STACK_DEL(&context, pairs);
-    yaml_free(tag_copy);
-
-    return 0;
-}
-
-/*
- * Append an item to a sequence node.
- */
-
-YAML_DECLARE(int)
-yaml_document_append_sequence_item(yaml_document_t *document,
-        int sequence, int item)
-{
-    struct {
-        yaml_error_type_t error;
-    } context;
-
-    assert(document);       /* Non-NULL document is required. */
-    assert(sequence > 0
-            && document->nodes.start + sequence <= document->nodes.top);
-                            /* Valid sequence id is required. */
-    assert(document->nodes.start[sequence-1].type == YAML_SEQUENCE_NODE);
-                            /* A sequence node is required. */
-    assert(item > 0 && document->nodes.start + item <= document->nodes.top);
-                            /* Valid item id is required. */
-
-    if (!PUSH(&context,
-                document->nodes.start[sequence-1].data.sequence.items, item))
-        return 0;
-
-    return 1;
-}
-
-/*
- * Append a pair of a key and a value to a mapping node.
- */
-
-YAML_DECLARE(int)
-yaml_document_append_mapping_pair(yaml_document_t *document,
-        int mapping, int key, int value)
-{
-    struct {
-        yaml_error_type_t error;
-    } context;
-
-    yaml_node_pair_t pair;
-
-    assert(document);       /* Non-NULL document is required. */
-    assert(mapping > 0
-            && document->nodes.start + mapping <= document->nodes.top);
-                            /* Valid mapping id is required. */
-    assert(document->nodes.start[mapping-1].type == YAML_MAPPING_NODE);
-                            /* A mapping node is required. */
-    assert(key > 0 && document->nodes.start + key <= document->nodes.top);
-                            /* Valid key id is required. */
-    assert(value > 0 && document->nodes.start + value <= document->nodes.top);
-                            /* Valid value id is required. */
-
-    pair.key = key;
-    pair.value = value;
-
-    if (!PUSH(&context,
-                document->nodes.start[mapping-1].data.mapping.pairs, pair))
-        return 0;
-
-    return 1;
-}
-
-
diff --git a/apic.go b/apic.go
new file mode 100644
index 0000000..ded1b99
--- /dev/null
+++ b/apic.go
@@ -0,0 +1,742 @@
+package goyaml
+
+import (
+	"io"
+	"os"
+)
+
+func yaml_insert_token(parser *yaml_parser_t, pos int, token *yaml_token_t) {
+	//fmt.Println("yaml_insert_token", "pos:", pos, "typ:", token.typ, "head:", parser.tokens_head, "len:", len(parser.tokens))
+
+	// Check if we can move the queue at the beginning of the buffer.
+	if parser.tokens_head > 0 && len(parser.tokens) == cap(parser.tokens) {
+		if parser.tokens_head != len(parser.tokens) {
+			copy(parser.tokens, parser.tokens[parser.tokens_head:])
+		}
+		parser.tokens = parser.tokens[:len(parser.tokens)-parser.tokens_head]
+		parser.tokens_head = 0
+	}
+	parser.tokens = append(parser.tokens, *token)
+	if pos < 0 {
+		return
+	}
+	copy(parser.tokens[parser.tokens_head+pos+1:], parser.tokens[parser.tokens_head+pos:])
+	parser.tokens[parser.tokens_head+pos] = *token
+}
+
+// Create a new parser object.
+func yaml_parser_initialize(parser *yaml_parser_t) bool {
+	*parser = yaml_parser_t{
+		raw_buffer: make([]byte, 0, input_raw_buffer_size),
+		buffer:     make([]byte, 0, input_buffer_size),
+	}
+	return true
+}
+
+// Destroy a parser object.
+func yaml_parser_delete(parser *yaml_parser_t) {
+	*parser = yaml_parser_t{}
+}
+
+// String read handler.
+func yaml_string_read_handler(parser *yaml_parser_t, buffer []byte) (n int, err error) {
+	if parser.input_pos == len(parser.input) {
+		return 0, io.EOF
+	}
+	n = copy(buffer, parser.input[parser.input_pos:])
+	parser.input_pos += n
+	return n, nil
+}
+
+// File read handler.
+func yaml_file_read_handler(parser *yaml_parser_t, buffer []byte) (n int, err error) {
+	return parser.input_file.Read(buffer)
+}
+
+// Set a string input.
+func yaml_parser_set_input_string(parser *yaml_parser_t, input []byte) {
+	if parser.read_handler != nil {
+		panic("must set the input source only once")
+	}
+	parser.read_handler = yaml_string_read_handler
+	parser.input = input
+	parser.input_pos = 0
+}
+
+// Set a file input.
+func yaml_parser_set_input_file(parser *yaml_parser_t, file *os.File) {
+	if parser.read_handler != nil {
+		panic("must set the input source only once")
+	}
+	parser.read_handler = yaml_file_read_handler
+	parser.input_file = file
+}
+
+// Set the source encoding.
+func yaml_parser_set_encoding(parser *yaml_parser_t, encoding yaml_encoding_t) {
+	if parser.encoding != yaml_ANY_ENCODING {
+		panic("must set the encoding only once")
+	}
+	parser.encoding = encoding
+}
+
+// Create a new emitter object.
+func yaml_emitter_initialize(emitter *yaml_emitter_t) bool {
+	*emitter = yaml_emitter_t{
+		buffer:         make([]byte, output_buffer_size),
+		raw_buffer:     make([]byte, 0, output_raw_buffer_size),
+		states:         make([]yaml_emitter_state_t, 0, initial_stack_size),
+		events:         make([]yaml_event_t, 0, initial_queue_size),
+	}
+	return true
+}
+
+// Destroy an emitter object.
+func yaml_emitter_delete(emitter *yaml_emitter_t) {
+	*emitter = yaml_emitter_t{}
+}
+
+// String write handler.
+func yaml_string_write_handler(emitter *yaml_emitter_t, buffer []byte) error {
+	*emitter.output_buffer = append(*emitter.output_buffer, buffer...)
+	return nil
+}
+
+// File write handler.
+func yaml_file_write_handler(emitter *yaml_emitter_t, buffer []byte) error {
+	_, err := emitter.output_file.Write(buffer)
+	return err
+}
+
+// Set a string output.
+func yaml_emitter_set_output_string(emitter *yaml_emitter_t, output_buffer *[]byte) {
+	if emitter.write_handler != nil {
+		panic("must set the output target only once")
+	}
+	emitter.write_handler = yaml_string_write_handler
+	emitter.output_buffer = output_buffer
+}
+
+// Set a file output.
+func yaml_emitter_set_output_file(emitter *yaml_emitter_t, file io.Writer) {
+	if emitter.write_handler != nil {
+		panic("must set the output target only once")
+	}
+	emitter.write_handler = yaml_file_write_handler
+	emitter.output_file = file
+}
+
+// Set the output encoding.
+func yaml_emitter_set_encoding(emitter *yaml_emitter_t, encoding yaml_encoding_t) {
+	if emitter.encoding != yaml_ANY_ENCODING {
+		panic("must set the output encoding only once")
+	}
+	emitter.encoding = encoding
+}
+
+// Set the canonical output style.
+func yaml_emitter_set_canonical(emitter *yaml_emitter_t, canonical bool) {
+	emitter.canonical = canonical
+}
+
+//// Set the indentation increment.
+func yaml_emitter_set_indent(emitter *yaml_emitter_t, indent int) {
+	if indent < 2 || indent > 9 {
+		indent = 2
+	}
+	emitter.best_indent = indent
+}
+
+// Set the preferred line width.
+func yaml_emitter_set_width(emitter *yaml_emitter_t, width int) {
+	if width < 0 {
+		width = -1
+	}
+	emitter.best_width = width
+}
+
+// Set if unescaped non-ASCII characters are allowed.
+func yaml_emitter_set_unicode(emitter *yaml_emitter_t, unicode bool) {
+	emitter.unicode = unicode
+}
+
+// Set the preferred line break character.
+func yaml_emitter_set_break(emitter *yaml_emitter_t, line_break yaml_break_t) {
+	emitter.line_break = line_break
+}
+
+///*
+// * Destroy a token object.
+// */
+//
+//YAML_DECLARE(void)
+//yaml_token_delete(yaml_token_t *token)
+//{
+//    assert(token);  // Non-NULL token object expected.
+//
+//    switch (token.type)
+//    {
+//        case YAML_TAG_DIRECTIVE_TOKEN:
+//            yaml_free(token.data.tag_directive.handle);
+//            yaml_free(token.data.tag_directive.prefix);
+//            break;
+//
+//        case YAML_ALIAS_TOKEN:
+//            yaml_free(token.data.alias.value);
+//            break;
+//
+//        case YAML_ANCHOR_TOKEN:
+//            yaml_free(token.data.anchor.value);
+//            break;
+//
+//        case YAML_TAG_TOKEN:
+//            yaml_free(token.data.tag.handle);
+//            yaml_free(token.data.tag.suffix);
+//            break;
+//
+//        case YAML_SCALAR_TOKEN:
+//            yaml_free(token.data.scalar.value);
+//            break;
+//
+//        default:
+//            break;
+//    }
+//
+//    memset(token, 0, sizeof(yaml_token_t));
+//}
+//
+///*
+// * Check if a string is a valid UTF-8 sequence.
+// *
+// * Check 'reader.c' for more details on UTF-8 encoding.
+// */
+//
+//static int
+//yaml_check_utf8(yaml_char_t *start, size_t length)
+//{
+//    yaml_char_t *end = start+length;
+//    yaml_char_t *pointer = start;
+//
+//    while (pointer < end) {
+//        unsigned char octet;
+//        unsigned int width;
+//        unsigned int value;
+//        size_t k;
+//
+//        octet = pointer[0];
+//        width = (octet & 0x80) == 0x00 ? 1 :
+//                (octet & 0xE0) == 0xC0 ? 2 :
+//                (octet & 0xF0) == 0xE0 ? 3 :
+//                (octet & 0xF8) == 0xF0 ? 4 : 0;
+//        value = (octet & 0x80) == 0x00 ? octet & 0x7F :
+//                (octet & 0xE0) == 0xC0 ? octet & 0x1F :
+//                (octet & 0xF0) == 0xE0 ? octet & 0x0F :
+//                (octet & 0xF8) == 0xF0 ? octet & 0x07 : 0;
+//        if (!width) return 0;
+//        if (pointer+width > end) return 0;
+//        for (k = 1; k < width; k ++) {
+//            octet = pointer[k];
+//            if ((octet & 0xC0) != 0x80) return 0;
+//            value = (value << 6) + (octet & 0x3F);
+//        }
+//        if (!((width == 1) ||
+//            (width == 2 && value >= 0x80) ||
+//            (width == 3 && value >= 0x800) ||
+//            (width == 4 && value >= 0x10000))) return 0;
+//
+//        pointer += width;
+//    }
+//
+//    return 1;
+//}
+//
+
+// Create STREAM-START.
+func yaml_stream_start_event_initialize(event *yaml_event_t, encoding yaml_encoding_t) bool {
+	*event = yaml_event_t{
+		typ:      yaml_STREAM_START_EVENT,
+		encoding: encoding,
+	}
+	return true
+}
+
+// Create STREAM-END.
+func yaml_stream_end_event_initialize(event *yaml_event_t) bool {
+	*event = yaml_event_t{
+		typ: yaml_STREAM_END_EVENT,
+	}
+	return true
+}
+
+// Create DOCUMENT-START.
+func yaml_document_start_event_initialize(event *yaml_event_t, version_directive *yaml_version_directive_t,
+	tag_directives []yaml_tag_directive_t, implicit bool) bool {
+	*event = yaml_event_t{
+		typ:               yaml_DOCUMENT_START_EVENT,
+		version_directive: version_directive,
+		tag_directives:    tag_directives,
+		implicit:          implicit,
+	}
+	return true
+}
+
+// Create DOCUMENT-END.
+func yaml_document_end_event_initialize(event *yaml_event_t, implicit bool) bool {
+	*event = yaml_event_t{
+		typ:      yaml_DOCUMENT_END_EVENT,
+		implicit: implicit,
+	}
+	return true
+}
+
+///*
+// * Create ALIAS.
+// */
+//
+//YAML_DECLARE(int)
+//yaml_alias_event_initialize(event *yaml_event_t, anchor *yaml_char_t)
+//{
+//    mark yaml_mark_t = { 0, 0, 0 }
+//    anchor_copy *yaml_char_t = NULL
+//
+//    assert(event) // Non-NULL event object is expected.
+//    assert(anchor) // Non-NULL anchor is expected.
+//
+//    if (!yaml_check_utf8(anchor, strlen((char *)anchor))) return 0
+//
+//    anchor_copy = yaml_strdup(anchor)
+//    if (!anchor_copy)
+//        return 0
+//
+//    ALIAS_EVENT_INIT(*event, anchor_copy, mark, mark)
+//
+//    return 1
+//}
+
+// Create SCALAR.
+func yaml_scalar_event_initialize(event *yaml_event_t, anchor, tag, value []byte, plain_implicit, quoted_implicit bool, style yaml_scalar_style_t) bool {
+	*event = yaml_event_t{
+		typ:             yaml_SCALAR_EVENT,
+		anchor:          anchor,
+		tag:             tag,
+		value:           value,
+		implicit:        plain_implicit,
+		quoted_implicit: quoted_implicit,
+		style:           yaml_style_t(style),
+	}
+	return true
+}
+
+// Create SEQUENCE-START.
+func yaml_sequence_start_event_initialize(event *yaml_event_t, anchor, tag []byte, implicit bool, style yaml_sequence_style_t) bool {
+	*event = yaml_event_t{
+		typ:      yaml_SEQUENCE_START_EVENT,
+		anchor:   anchor,
+		tag:      tag,
+		implicit: implicit,
+		style:    yaml_style_t(style),
+	}
+	return true
+}
+
+// Create SEQUENCE-END.
+func yaml_sequence_end_event_initialize(event *yaml_event_t) bool {
+	*event = yaml_event_t{
+		typ: yaml_SEQUENCE_END_EVENT,
+	}
+	return true
+}
+
+// Create MAPPING-START.
+func yaml_mapping_start_event_initialize(event *yaml_event_t, anchor, tag []byte, implicit bool, style yaml_mapping_style_t) bool {
+	*event = yaml_event_t{
+		typ:      yaml_MAPPING_START_EVENT,
+		anchor:   anchor,
+		tag:      tag,
+		implicit: implicit,
+		style:    yaml_style_t(style),
+	}
+	return true
+}
+
+// Create MAPPING-END.
+func yaml_mapping_end_event_initialize(event *yaml_event_t) bool {
+	*event = yaml_event_t{
+		typ: yaml_MAPPING_END_EVENT,
+	}
+	return true
+}
+
+// Destroy an event object.
+func yaml_event_delete(event *yaml_event_t) {
+	*event = yaml_event_t{}
+}
+
+///*
+// * Create a document object.
+// */
+//
+//YAML_DECLARE(int)
+//yaml_document_initialize(document *yaml_document_t,
+//        version_directive *yaml_version_directive_t,
+//        tag_directives_start *yaml_tag_directive_t,
+//        tag_directives_end *yaml_tag_directive_t,
+//        start_implicit int, end_implicit int)
+//{
+//    struct {
+//        error yaml_error_type_t
+//    } context
+//    struct {
+//        start *yaml_node_t
+//        end *yaml_node_t
+//        top *yaml_node_t
+//    } nodes = { NULL, NULL, NULL }
+//    version_directive_copy *yaml_version_directive_t = NULL
+//    struct {
+//        start *yaml_tag_directive_t
+//        end *yaml_tag_directive_t
+//        top *yaml_tag_directive_t
+//    } tag_directives_copy = { NULL, NULL, NULL }
+//    value yaml_tag_directive_t = { NULL, NULL }
+//    mark yaml_mark_t = { 0, 0, 0 }
+//
+//    assert(document) // Non-NULL document object is expected.
+//    assert((tag_directives_start && tag_directives_end) ||
+//            (tag_directives_start == tag_directives_end))
+//                            // Valid tag directives are expected.
+//
+//    if (!STACK_INIT(&context, nodes, INITIAL_STACK_SIZE)) goto error
+//
+//    if (version_directive) {
+//        version_directive_copy = yaml_malloc(sizeof(yaml_version_directive_t))
+//        if (!version_directive_copy) goto error
+//        version_directive_copy.major = version_directive.major
+//        version_directive_copy.minor = version_directive.minor
+//    }
+//
+//    if (tag_directives_start != tag_directives_end) {
+//        tag_directive *yaml_tag_directive_t
+//        if (!STACK_INIT(&context, tag_directives_copy, INITIAL_STACK_SIZE))
+//            goto error
+//        for (tag_directive = tag_directives_start
+//                tag_directive != tag_directives_end; tag_directive ++) {
+//            assert(tag_directive.handle)
+//            assert(tag_directive.prefix)
+//            if (!yaml_check_utf8(tag_directive.handle,
+//                        strlen((char *)tag_directive.handle)))
+//                goto error
+//            if (!yaml_check_utf8(tag_directive.prefix,
+//                        strlen((char *)tag_directive.prefix)))
+//                goto error
+//            value.handle = yaml_strdup(tag_directive.handle)
+//            value.prefix = yaml_strdup(tag_directive.prefix)
+//            if (!value.handle || !value.prefix) goto error
+//            if (!PUSH(&context, tag_directives_copy, value))
+//                goto error
+//            value.handle = NULL
+//            value.prefix = NULL
+//        }
+//    }
+//
+//    DOCUMENT_INIT(*document, nodes.start, nodes.end, version_directive_copy,
+//            tag_directives_copy.start, tag_directives_copy.top,
+//            start_implicit, end_implicit, mark, mark)
+//
+//    return 1
+//
+//error:
+//    STACK_DEL(&context, nodes)
+//    yaml_free(version_directive_copy)
+//    while (!STACK_EMPTY(&context, tag_directives_copy)) {
+//        value yaml_tag_directive_t = POP(&context, tag_directives_copy)
+//        yaml_free(value.handle)
+//        yaml_free(value.prefix)
+//    }
+//    STACK_DEL(&context, tag_directives_copy)
+//    yaml_free(value.handle)
+//    yaml_free(value.prefix)
+//
+//    return 0
+//}
+//
+///*
+// * Destroy a document object.
+// */
+//
+//YAML_DECLARE(void)
+//yaml_document_delete(document *yaml_document_t)
+//{
+//    struct {
+//        error yaml_error_type_t
+//    } context
+//    tag_directive *yaml_tag_directive_t
+//
+//    context.error = YAML_NO_ERROR // Eliminate a compliler warning.
+//
+//    assert(document) // Non-NULL document object is expected.
+//
+//    while (!STACK_EMPTY(&context, document.nodes)) {
+//        node yaml_node_t = POP(&context, document.nodes)
+//        yaml_free(node.tag)
+//        switch (node.type) {
+//            case YAML_SCALAR_NODE:
+//                yaml_free(node.data.scalar.value)
+//                break
+//            case YAML_SEQUENCE_NODE:
+//                STACK_DEL(&context, node.data.sequence.items)
+//                break
+//            case YAML_MAPPING_NODE:
+//                STACK_DEL(&context, node.data.mapping.pairs)
+//                break
+//            default:
+//                assert(0) // Should not happen.
+//        }
+//    }
+//    STACK_DEL(&context, document.nodes)
+//
+//    yaml_free(document.version_directive)
+//    for (tag_directive = document.tag_directives.start
+//            tag_directive != document.tag_directives.end
+//            tag_directive++) {
+//        yaml_free(tag_directive.handle)
+//        yaml_free(tag_directive.prefix)
+//    }
+//    yaml_free(document.tag_directives.start)
+//
+//    memset(document, 0, sizeof(yaml_document_t))
+//}
+//
+///**
+// * Get a document node.
+// */
+//
+//YAML_DECLARE(yaml_node_t *)
+//yaml_document_get_node(document *yaml_document_t, index int)
+//{
+//    assert(document) // Non-NULL document object is expected.
+//
+//    if (index > 0 && document.nodes.start + index <= document.nodes.top) {
+//        return document.nodes.start + index - 1
+//    }
+//    return NULL
+//}
+//
+///**
+// * Get the root object.
+// */
+//
+//YAML_DECLARE(yaml_node_t *)
+//yaml_document_get_root_node(document *yaml_document_t)
+//{
+//    assert(document) // Non-NULL document object is expected.
+//
+//    if (document.nodes.top != document.nodes.start) {
+//        return document.nodes.start
+//    }
+//    return NULL
+//}
+//
+///*
+// * Add a scalar node to a document.
+// */
+//
+//YAML_DECLARE(int)
+//yaml_document_add_scalar(document *yaml_document_t,
+//        tag *yaml_char_t, value *yaml_char_t, length int,
+//        style yaml_scalar_style_t)
+//{
+//    struct {
+//        error yaml_error_type_t
+//    } context
+//    mark yaml_mark_t = { 0, 0, 0 }
+//    tag_copy *yaml_char_t = NULL
+//    value_copy *yaml_char_t = NULL
+//    node yaml_node_t
+//
+//    assert(document) // Non-NULL document object is expected.
+//    assert(value) // Non-NULL value is expected.
+//
+//    if (!tag) {
+//        tag = (yaml_char_t *)YAML_DEFAULT_SCALAR_TAG
+//    }
+//
+//    if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error
+//    tag_copy = yaml_strdup(tag)
+//    if (!tag_copy) goto error
+//
+//    if (length < 0) {
+//        length = strlen((char *)value)
+//    }
+//
+//    if (!yaml_check_utf8(value, length)) goto error
+//    value_copy = yaml_malloc(length+1)
+//    if (!value_copy) goto error
+//    memcpy(value_copy, value, length)
+//    value_copy[length] = '\0'
+//
+//    SCALAR_NODE_INIT(node, tag_copy, value_copy, length, style, mark, mark)
+//    if (!PUSH(&context, document.nodes, node)) goto error
+//
+//    return document.nodes.top - document.nodes.start
+//
+//error:
+//    yaml_free(tag_copy)
+//    yaml_free(value_copy)
+//
+//    return 0
+//}
+//
+///*
+// * Add a sequence node to a document.
+// */
+//
+//YAML_DECLARE(int)
+//yaml_document_add_sequence(document *yaml_document_t,
+//        tag *yaml_char_t, style yaml_sequence_style_t)
+//{
+//    struct {
+//        error yaml_error_type_t
+//    } context
+//    mark yaml_mark_t = { 0, 0, 0 }
+//    tag_copy *yaml_char_t = NULL
+//    struct {
+//        start *yaml_node_item_t
+//        end *yaml_node_item_t
+//        top *yaml_node_item_t
+//    } items = { NULL, NULL, NULL }
+//    node yaml_node_t
+//
+//    assert(document) // Non-NULL document object is expected.
+//
+//    if (!tag) {
+//        tag = (yaml_char_t *)YAML_DEFAULT_SEQUENCE_TAG
+//    }
+//
+//    if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error
+//    tag_copy = yaml_strdup(tag)
+//    if (!tag_copy) goto error
+//
+//    if (!STACK_INIT(&context, items, INITIAL_STACK_SIZE)) goto error
+//
+//    SEQUENCE_NODE_INIT(node, tag_copy, items.start, items.end,
+//            style, mark, mark)
+//    if (!PUSH(&context, document.nodes, node)) goto error
+//
+//    return document.nodes.top - document.nodes.start
+//
+//error:
+//    STACK_DEL(&context, items)
+//    yaml_free(tag_copy)
+//
+//    return 0
+//}
+//
+///*
+// * Add a mapping node to a document.
+// */
+//
+//YAML_DECLARE(int)
+//yaml_document_add_mapping(document *yaml_document_t,
+//        tag *yaml_char_t, style yaml_mapping_style_t)
+//{
+//    struct {
+//        error yaml_error_type_t
+//    } context
+//    mark yaml_mark_t = { 0, 0, 0 }
+//    tag_copy *yaml_char_t = NULL
+//    struct {
+//        start *yaml_node_pair_t
+//        end *yaml_node_pair_t
+//        top *yaml_node_pair_t
+//    } pairs = { NULL, NULL, NULL }
+//    node yaml_node_t
+//
+//    assert(document) // Non-NULL document object is expected.
+//
+//    if (!tag) {
+//        tag = (yaml_char_t *)YAML_DEFAULT_MAPPING_TAG
+//    }
+//
+//    if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error
+//    tag_copy = yaml_strdup(tag)
+//    if (!tag_copy) goto error
+//
+//    if (!STACK_INIT(&context, pairs, INITIAL_STACK_SIZE)) goto error
+//
+//    MAPPING_NODE_INIT(node, tag_copy, pairs.start, pairs.end,
+//            style, mark, mark)
+//    if (!PUSH(&context, document.nodes, node)) goto error
+//
+//    return document.nodes.top - document.nodes.start
+//
+//error:
+//    STACK_DEL(&context, pairs)
+//    yaml_free(tag_copy)
+//
+//    return 0
+//}
+//
+///*
+// * Append an item to a sequence node.
+// */
+//
+//YAML_DECLARE(int)
+//yaml_document_append_sequence_item(document *yaml_document_t,
+//        sequence int, item int)
+//{
+//    struct {
+//        error yaml_error_type_t
+//    } context
+//
+//    assert(document) // Non-NULL document is required.
+//    assert(sequence > 0
+//            && document.nodes.start + sequence <= document.nodes.top)
+//                            // Valid sequence id is required.
+//    assert(document.nodes.start[sequence-1].type == YAML_SEQUENCE_NODE)
+//                            // A sequence node is required.
+//    assert(item > 0 && document.nodes.start + item <= document.nodes.top)
+//                            // Valid item id is required.
+//
+//    if (!PUSH(&context,
+//                document.nodes.start[sequence-1].data.sequence.items, item))
+//        return 0
+//
+//    return 1
+//}
+//
+///*
+// * Append a pair of a key and a value to a mapping node.
+// */
+//
+//YAML_DECLARE(int)
+//yaml_document_append_mapping_pair(document *yaml_document_t,
+//        mapping int, key int, value int)
+//{
+//    struct {
+//        error yaml_error_type_t
+//    } context
+//
+//    pair yaml_node_pair_t
+//
+//    assert(document) // Non-NULL document is required.
+//    assert(mapping > 0
+//            && document.nodes.start + mapping <= document.nodes.top)
+//                            // Valid mapping id is required.
+//    assert(document.nodes.start[mapping-1].type == YAML_MAPPING_NODE)
+//                            // A mapping node is required.
+//    assert(key > 0 && document.nodes.start + key <= document.nodes.top)
+//                            // Valid key id is required.
+//    assert(value > 0 && document.nodes.start + value <= document.nodes.top)
+//                            // Valid value id is required.
+//
+//    pair.key = key
+//    pair.value = value
+//
+//    if (!PUSH(&context,
+//                document.nodes.start[mapping-1].data.mapping.pairs, pair))
+//        return 0
+//
+//    return 1
+//}
+//
+//
diff --git a/config.h b/config.h
deleted file mode 100644
index 6a3d605..0000000
--- a/config.h
+++ /dev/null
@@ -1,4 +0,0 @@
-#define YAML_VERSION_STRING "0.1.3"
-#define YAML_VERSION_MAJOR 0
-#define YAML_VERSION_MINOR 1
-#define YAML_VERSION_PATCH 3
diff --git a/decode.go b/decode.go
index b03f36e..e7fb29b 100644
--- a/decode.go
+++ b/decode.go
@@ -1,16 +1,8 @@
 package goyaml
 
-// #cgo LDFLAGS: -lm -lpthread
-// #cgo windows CFLAGS: -DYAML_DECLARE_STATIC=1 -Dstrdup=_strdup
-// #cgo CFLAGS: -I. -DHAVE_CONFIG_H=1
-//
-// #include "helpers.h"
-import "C"
-
 import (
 	"reflect"
 	"strconv"
-	"unsafe"
 )
 
 const (
@@ -31,22 +23,18 @@
 	anchors      map[string]*node
 }
 
-func stry(s *C.yaml_char_t) string {
-	return C.GoString((*C.char)(unsafe.Pointer(s)))
-}
-
 // ----------------------------------------------------------------------------
 // Parser, produces a node tree out of a libyaml event stream.
 
 type parser struct {
-	parser C.yaml_parser_t
-	event  C.yaml_event_t
+	parser yaml_parser_t
+	event  yaml_event_t
 	doc    *node
 }
 
 func newParser(b []byte) *parser {
 	p := parser{}
-	if C.yaml_parser_initialize(&p.parser) == 0 {
+	if !yaml_parser_initialize(&p.parser) {
 		panic("Failed to initialize YAML emitter")
 	}
 
@@ -54,35 +42,31 @@
 		b = []byte{'\n'}
 	}
 
-	// How unsafe is this really?  Will this break if the GC becomes compacting?
-	// Probably not, otherwise that would likely break &parse below as well.
-	input := (*C.uchar)(unsafe.Pointer(&b[0]))
-	C.yaml_parser_set_input_string(&p.parser, input, (C.size_t)(len(b)))
+	yaml_parser_set_input_string(&p.parser, b)
 
 	p.skip()
-	if p.event._type != C.YAML_STREAM_START_EVENT {
-		panic("Expected stream start event, got " +
-			strconv.Itoa(int(p.event._type)))
+	if p.event.typ != yaml_STREAM_START_EVENT {
+		panic("Expected stream start event, got " + strconv.Itoa(int(p.event.typ)))
 	}
 	p.skip()
 	return &p
 }
 
 func (p *parser) destroy() {
-	if p.event._type != C.YAML_NO_EVENT {
-		C.yaml_event_delete(&p.event)
+	if p.event.typ != yaml_NO_EVENT {
+		yaml_event_delete(&p.event)
 	}
-	C.yaml_parser_delete(&p.parser)
+	yaml_parser_delete(&p.parser)
 }
 
 func (p *parser) skip() {
-	if p.event._type != C.YAML_NO_EVENT {
-		if p.event._type == C.YAML_STREAM_END_EVENT {
+	if p.event.typ != yaml_NO_EVENT {
+		if p.event.typ == yaml_STREAM_END_EVENT {
 			panic("Attempted to go past the end of stream. Corrupted value?")
 		}
-		C.yaml_event_delete(&p.event)
+		yaml_event_delete(&p.event)
 	}
-	if C.yaml_parser_parse(&p.parser, &p.event) == 0 {
+	if !yaml_parser_parse(&p.parser, &p.event) {
 		p.fail()
 	}
 }
@@ -91,54 +75,56 @@
 	var where string
 	var line int
 	if p.parser.problem_mark.line != 0 {
-		line = int(C.int(p.parser.problem_mark.line))
+		line = p.parser.problem_mark.line
 	} else if p.parser.context_mark.line != 0 {
-		line = int(C.int(p.parser.context_mark.line))
+		line = p.parser.context_mark.line
 	}
 	if line != 0 {
 		where = "line " + strconv.Itoa(line) + ": "
 	}
 	var msg string
-	if p.parser.problem != nil {
-		msg = C.GoString(p.parser.problem)
+	if len(p.parser.problem) > 0 {
+		msg = p.parser.problem
 	} else {
 		msg = "Unknown problem parsing YAML content"
 	}
 	panic(where + msg)
 }
 
-func (p *parser) anchor(n *node, anchor *C.yaml_char_t) {
+func (p *parser) anchor(n *node, anchor []byte) {
 	if anchor != nil {
-		p.doc.anchors[stry(anchor)] = n
+		p.doc.anchors[string(anchor)] = n
 	}
 }
 
 func (p *parser) parse() *node {
-	switch p.event._type {
-	case C.YAML_SCALAR_EVENT:
+	switch p.event.typ {
+	case yaml_SCALAR_EVENT:
 		return p.scalar()
-	case C.YAML_ALIAS_EVENT:
+	case yaml_ALIAS_EVENT:
 		return p.alias()
-	case C.YAML_MAPPING_START_EVENT:
+	case yaml_MAPPING_START_EVENT:
 		return p.mapping()
-	case C.YAML_SEQUENCE_START_EVENT:
+	case yaml_SEQUENCE_START_EVENT:
 		return p.sequence()
-	case C.YAML_DOCUMENT_START_EVENT:
+	case yaml_DOCUMENT_START_EVENT:
 		return p.document()
-	case C.YAML_STREAM_END_EVENT:
+	case yaml_STREAM_END_EVENT:
 		// Happens when attempting to decode an empty buffer.
 		return nil
 	default:
 		panic("Attempted to parse unknown event: " +
-			strconv.Itoa(int(p.event._type)))
+			strconv.Itoa(int(p.event.typ)))
 	}
 	panic("Unreachable")
 }
 
 func (p *parser) node(kind int) *node {
-	return &node{kind: kind,
-		line:   int(C.int(p.event.start_mark.line)),
-		column: int(C.int(p.event.start_mark.column))}
+	return &node{
+		kind:   kind,
+		line:   p.event.start_mark.line,
+		column: p.event.start_mark.column,
+	}
 }
 
 func (p *parser) document() *node {
@@ -147,38 +133,36 @@
 	p.doc = n
 	p.skip()
 	n.children = append(n.children, p.parse())
-	if p.event._type != C.YAML_DOCUMENT_END_EVENT {
+	if p.event.typ != yaml_DOCUMENT_END_EVENT {
 		panic("Expected end of document event but got " +
-			strconv.Itoa(int(p.event._type)))
+			strconv.Itoa(int(p.event.typ)))
 	}
 	p.skip()
 	return n
 }
 
 func (p *parser) alias() *node {
-	alias := C.event_alias(&p.event)
 	n := p.node(aliasNode)
-	n.value = stry(alias.anchor)
+	n.value = string(p.event.anchor)
 	p.skip()
 	return n
 }
 
 func (p *parser) scalar() *node {
-	scalar := C.event_scalar(&p.event)
 	n := p.node(scalarNode)
-	n.value = stry(scalar.value)
-	n.tag = stry(scalar.tag)
-	n.implicit = (scalar.plain_implicit != 0)
-	p.anchor(n, scalar.anchor)
+	n.value = string(p.event.value)
+	n.tag = string(p.event.tag)
+	n.implicit = p.event.implicit
+	p.anchor(n, p.event.anchor)
 	p.skip()
 	return n
 }
 
 func (p *parser) sequence() *node {
 	n := p.node(sequenceNode)
-	p.anchor(n, C.event_sequence_start(&p.event).anchor)
+	p.anchor(n, p.event.anchor)
 	p.skip()
-	for p.event._type != C.YAML_SEQUENCE_END_EVENT {
+	for p.event.typ != yaml_SEQUENCE_END_EVENT {
 		n.children = append(n.children, p.parse())
 	}
 	p.skip()
@@ -187,9 +171,9 @@
 
 func (p *parser) mapping() *node {
 	n := p.node(mappingNode)
-	p.anchor(n, C.event_mapping_start(&p.event).anchor)
+	p.anchor(n, p.event.anchor)
 	p.skip()
-	for p.event._type != C.YAML_MAPPING_END_EVENT {
+	for p.event.typ != yaml_MAPPING_END_EVENT {
 		n.children = append(n.children, p.parse(), p.parse())
 	}
 	p.skip()
diff --git a/decode_test.go b/decode_test.go
index 83532f4..89a9fdb 100644
--- a/decode_test.go
+++ b/decode_test.go
@@ -13,125 +13,310 @@
 	data  string
 	value interface{}
 }{
-	{"", &struct{}{}},
-	{"{}", &struct{}{}},
-
-	{"v: hi", map[string]string{"v": "hi"}},
-	{"v: hi", map[string]interface{}{"v": "hi"}},
-	{"v: true", map[string]string{"v": "true"}},
-	{"v: true", map[string]interface{}{"v": true}},
-	{"v: 10", map[string]interface{}{"v": 10}},
-	{"v: 0b10", map[string]interface{}{"v": 2}},
-	{"v: 0xA", map[string]interface{}{"v": 10}},
-	{"v: 4294967296", map[string]int64{"v": 4294967296}},
-	{"v: 0.1", map[string]interface{}{"v": 0.1}},
-	{"v: .1", map[string]interface{}{"v": 0.1}},
-	{"v: .Inf", map[string]interface{}{"v": math.Inf(+1)}},
-	{"v: -.Inf", map[string]interface{}{"v": math.Inf(-1)}},
-	{"v: -10", map[string]interface{}{"v": -10}},
-	{"v: -.1", map[string]interface{}{"v": -0.1}},
+	{
+		"",
+		&struct{}{},
+	}, {
+		"{}", &struct{}{},
+	}, {
+		"v: hi",
+		map[string]string{"v": "hi"},
+	}, {
+		"v: hi", map[string]interface{}{"v": "hi"},
+	}, {
+		"v: true",
+		map[string]string{"v": "true"},
+	}, {
+		"v: true",
+		map[string]interface{}{"v": true},
+	}, {
+		"v: 10",
+		map[string]interface{}{"v": 10},
+	}, {
+		"v: 0b10",
+		map[string]interface{}{"v": 2},
+	}, {
+		"v: 0xA",
+		map[string]interface{}{"v": 10},
+	}, {
+		"v: 4294967296",
+		map[string]int64{"v": 4294967296},
+	}, {
+		"v: 0.1",
+		map[string]interface{}{"v": 0.1},
+	}, {
+		"v: .1",
+		map[string]interface{}{"v": 0.1},
+	}, {
+		"v: .Inf",
+		map[string]interface{}{"v": math.Inf(+1)},
+	}, {
+		"v: -.Inf",
+		map[string]interface{}{"v": math.Inf(-1)},
+	}, {
+		"v: -10",
+		map[string]interface{}{"v": -10},
+	}, {
+		"v: -.1",
+		map[string]interface{}{"v": -0.1},
+	},
 
 	// Simple values.
-	{"123", &unmarshalIntTest},
+	{
+		"123",
+		&unmarshalIntTest,
+	},
 
 	// Floats from spec
-	{"canonical: 6.8523e+5", map[string]interface{}{"canonical": 6.8523e+5}},
-	{"expo: 685.230_15e+03", map[string]interface{}{"expo": 685.23015e+03}},
-	{"fixed: 685_230.15", map[string]interface{}{"fixed": 685230.15}},
+	{
+		"canonical: 6.8523e+5",
+		map[string]interface{}{"canonical": 6.8523e+5},
+	}, {
+		"expo: 685.230_15e+03",
+		map[string]interface{}{"expo": 685.23015e+03},
+	}, {
+		"fixed: 685_230.15",
+		map[string]interface{}{"fixed": 685230.15},
+	}, {
+		"neginf: -.inf",
+		map[string]interface{}{"neginf": math.Inf(-1)},
+	}, {
+		"fixed: 685_230.15",
+		map[string]float64{"fixed": 685230.15},
+	},
 	//{"sexa: 190:20:30.15", map[string]interface{}{"sexa": 0}}, // Unsupported
-	{"neginf: -.inf", map[string]interface{}{"neginf": math.Inf(-1)}},
 	//{"notanum: .NaN", map[string]interface{}{"notanum": math.NaN()}}, // Equality of NaN fails.
-	{"fixed: 685_230.15", map[string]float64{"fixed": 685230.15}},
 
 	// Bools from spec
-	{"canonical: y", map[string]interface{}{"canonical": true}},
-	{"answer: NO", map[string]interface{}{"answer": false}},
-	{"logical: True", map[string]interface{}{"logical": true}},
-	{"option: on", map[string]interface{}{"option": true}},
-	{"option: on", map[string]bool{"option": true}},
-
+	{
+		"canonical: y",
+		map[string]interface{}{"canonical": true},
+	}, {
+		"answer: NO",
+		map[string]interface{}{"answer": false},
+	}, {
+		"logical: True",
+		map[string]interface{}{"logical": true},
+	}, {
+		"option: on",
+		map[string]interface{}{"option": true},
+	}, {
+		"option: on",
+		map[string]bool{"option": true},
+	},
 	// Ints from spec
-	{"canonical: 685230", map[string]interface{}{"canonical": 685230}},
-	{"decimal: +685_230", map[string]interface{}{"decimal": 685230}},
-	{"octal: 02472256", map[string]interface{}{"octal": 685230}},
-	{"hexa: 0x_0A_74_AE", map[string]interface{}{"hexa": 685230}},
-	{"bin: 0b1010_0111_0100_1010_1110", map[string]interface{}{"bin": 685230}},
-	{"bin: -0b101010", map[string]interface{}{"bin": -42}},
+	{
+		"canonical: 685230",
+		map[string]interface{}{"canonical": 685230},
+	}, {
+		"decimal: +685_230",
+		map[string]interface{}{"decimal": 685230},
+	}, {
+		"octal: 02472256",
+		map[string]interface{}{"octal": 685230},
+	}, {
+		"hexa: 0x_0A_74_AE",
+		map[string]interface{}{"hexa": 685230},
+	}, {
+		"bin: 0b1010_0111_0100_1010_1110",
+		map[string]interface{}{"bin": 685230},
+	}, {
+		"bin: -0b101010",
+		map[string]interface{}{"bin": -42},
+	}, {
+		"decimal: +685_230",
+		map[string]int{"decimal": 685230},
+	},
+
 	//{"sexa: 190:20:30", map[string]interface{}{"sexa": 0}}, // Unsupported
-	{"decimal: +685_230", map[string]int{"decimal": 685230}},
 
 	// Nulls from spec
-	{"empty:", map[string]interface{}{"empty": nil}},
-	{"canonical: ~", map[string]interface{}{"canonical": nil}},
-	{"english: null", map[string]interface{}{"english": nil}},
-	{"~: null key", map[interface{}]string{nil: "null key"}},
-	{"empty:", map[string]*bool{"empty": nil}},
+	{
+		"empty:",
+		map[string]interface{}{"empty": nil},
+	}, {
+		"canonical: ~",
+		map[string]interface{}{"canonical": nil},
+	}, {
+		"english: null",
+		map[string]interface{}{"english": nil},
+	}, {
+		"~: null key",
+		map[interface{}]string{nil: "null key"},
+	}, {
+		"empty:",
+		map[string]*bool{"empty": nil},
+	},
 
-	// Sequence
-	{"seq: [A,B]", map[string]interface{}{"seq": []interface{}{"A", "B"}}},
-	{"seq: [A,B,C]", map[string][]string{"seq": []string{"A", "B", "C"}}},
-	{"seq: [A,1,C]", map[string][]string{"seq": []string{"A", "1", "C"}}},
-	{"seq: [A,1,C]", map[string][]int{"seq": []int{1}}},
-	{"seq: [A,1,C]", map[string]interface{}{"seq": []interface{}{"A", 1, "C"}}},
+	// Flow sequence
+	{
+		"seq: [A,B]",
+		map[string]interface{}{"seq": []interface{}{"A", "B"}},
+	}, {
+		"seq: [A,B,C,]",
+		map[string][]string{"seq": []string{"A", "B", "C"}},
+	}, {
+		"seq: [A,1,C]",
+		map[string][]string{"seq": []string{"A", "1", "C"}},
+	}, {
+		"seq: [A,1,C]",
+		map[string][]int{"seq": []int{1}},
+	}, {
+		"seq: [A,1,C]",
+		map[string]interface{}{"seq": []interface{}{"A", 1, "C"}},
+	},
+	// Block sequence
+	{
+		"seq:\n - A\n - B",
+		map[string]interface{}{"seq": []interface{}{"A", "B"}},
+	}, {
+		"seq:\n - A\n - B\n - C",
+		map[string][]string{"seq": []string{"A", "B", "C"}},
+	}, {
+		"seq:\n - A\n - 1\n - C",
+		map[string][]string{"seq": []string{"A", "1", "C"}},
+	}, {
+		"seq:\n - A\n - 1\n - C",
+		map[string][]int{"seq": []int{1}},
+	}, {
+		"seq:\n - A\n - 1\n - C",
+		map[string]interface{}{"seq": []interface{}{"A", 1, "C"}},
+	},
+
+	// Literal block scalar
+	{
+		"scalar: | # Comment\n\n literal\n\n \ttext\n\n",
+		map[string]string{"scalar": "\nliteral\n\n\ttext\n"},
+	},
+
+	// Folded block scalar
+	{
+		"scalar: > # Comment\n\n folded\n line\n \n next\n line\n  * one\n  * two\n\n last\n line\n\n",
+		map[string]string{"scalar": "\nfolded line\nnext line\n * one\n * two\n\nlast line\n"},
+	},
 
 	// Map inside interface with no type hints.
-	{"a: {b: c}",
-		map[string]interface{}{"a": map[interface{}]interface{}{"b": "c"}}},
+	{
+		"a: {b: c}",
+		map[string]interface{}{"a": map[interface{}]interface{}{"b": "c"}},
+	},
 
 	// Structs and type conversions.
-	{"hello: world", &struct{ Hello string }{"world"}},
-	{"a: {b: c}", &struct{ A struct{ B string } }{struct{ B string }{"c"}}},
-	{"a: {b: c}", &struct{ A *struct{ B string } }{&struct{ B string }{"c"}}},
-	{"a: {b: c}", &struct{ A map[string]string }{map[string]string{"b": "c"}}},
-	{"a: {b: c}", &struct{ A *map[string]string }{&map[string]string{"b": "c"}}},
-	{"a:", &struct{ A map[string]string }{}},
-	{"a: 1", &struct{ A int }{1}},
-	{"a: [1, 2]", &struct{ A []int }{[]int{1, 2}}},
-	{"a: 1", &struct{ B int }{0}},
-	{"a: 1", &struct {
-		B int "a"
-	}{1}},
-	{"a: y", &struct{ A bool }{true}},
+	{
+		"hello: world",
+		&struct{ Hello string }{"world"},
+	}, {
+		"a: {b: c}",
+		&struct{ A struct{ B string } }{struct{ B string }{"c"}},
+	}, {
+		"a: {b: c}",
+		&struct{ A *struct{ B string } }{&struct{ B string }{"c"}},
+	}, {
+		"a: {b: c}",
+		&struct{ A map[string]string }{map[string]string{"b": "c"}},
+	}, {
+		"a: {b: c}",
+		&struct{ A *map[string]string }{&map[string]string{"b": "c"}},
+	}, {
+		"a:",
+		&struct{ A map[string]string }{},
+	}, {
+		"a: 1",
+		&struct{ A int }{1},
+	}, {
+		"a: [1, 2]",
+		&struct{ A []int }{[]int{1, 2}},
+	}, {
+		"a: 1",
+		&struct{ B int }{0},
+	}, {
+		"a: 1",
+		&struct {
+			B int "a"
+		}{1},
+	}, {
+		"a: y",
+		&struct{ A bool }{true},
+	},
 
 	// Some cross type conversions
-	{"v: 42", map[string]uint{"v": 42}},
-	{"v: -42", map[string]uint{}},
-	{"v: 4294967296", map[string]uint64{"v": 4294967296}},
-	{"v: -4294967296", map[string]uint64{}},
+	{
+		"v: 42",
+		map[string]uint{"v": 42},
+	}, {
+		"v: -42",
+		map[string]uint{},
+	}, {
+		"v: 4294967296",
+		map[string]uint64{"v": 4294967296},
+	}, {
+		"v: -4294967296",
+		map[string]uint64{},
+	},
 
 	// Overflow cases.
-	{"v: 4294967297", map[string]int32{}},
-	{"v: 128", map[string]int8{}},
+	{
+		"v: 4294967297",
+		map[string]int32{},
+	}, {
+		"v: 128",
+		map[string]int8{},
+	},
 
 	// Quoted values.
-	{"'1': '\"2\"'", map[interface{}]interface{}{"1": "\"2\""}},
+	{
+		"'1': '\"2\"'",
+		map[interface{}]interface{}{"1": "\"2\""},
+	}, {
+		"v:\n- A\n- 'B\n\n  C'\n",
+		map[string][]string{"v": []string{"A", "B\nC"}},
+	},
 
 	// Explicit tags.
-	{"v: !!float '1.1'", map[string]interface{}{"v": 1.1}},
-	{"v: !!null ''", map[string]interface{}{"v": nil}},
-	{"%TAG !y! tag:yaml.org,2002:\n---\nv: !y!int '1'",
-		map[string]interface{}{"v": 1}},
+	{
+		"v: !!float '1.1'",
+		map[string]interface{}{"v": 1.1},
+	}, {
+		"v: !!null ''",
+		map[string]interface{}{"v": nil},
+	}, {
+		"%TAG !y! tag:yaml.org,2002:\n---\nv: !y!int '1'",
+		map[string]interface{}{"v": 1},
+	},
 
 	// Anchors and aliases.
-	{"a: &x 1\nb: &y 2\nc: *x\nd: *y\n", &struct{ A, B, C, D int }{1, 2, 1, 2}},
-	{"a: &a {c: 1}\nb: *a",
+	{
+		"a: &x 1\nb: &y 2\nc: *x\nd: *y\n",
+		&struct{ A, B, C, D int }{1, 2, 1, 2},
+	}, {
+		"a: &a {c: 1}\nb: *a",
 		&struct {
 			A, B struct {
 				C int
 			}
-		}{struct{ C int }{1}, struct{ C int }{1}}},
-	{"a: &a [1, 2]\nb: *a", &struct{ B []int }{[]int{1, 2}}},
+		}{struct{ C int }{1}, struct{ C int }{1}},
+	}, {
+		"a: &a [1, 2]\nb: *a",
+		&struct{ B []int }{[]int{1, 2}},
+	},
 
 	// BUG #1133337
-	{"foo: ''", map[string]*string{"foo": new(string)}},
-	{"foo: null", map[string]string{}},
+	{
+		"foo: ''",
+		map[string]*string{"foo": new(string)},
+	}, {
+		"foo: null",
+		map[string]string{},
+	},
 
 	// Ignored field
-	{"a: 1\nb: 2\n",
+	{
+		"a: 1\nb: 2\n",
 		&struct {
 			A int
 			B int "-"
-		}{1, 0}},
+		}{1, 0},
+	},
 }
 
 func (s *S) TestUnmarshal(c *C) {
@@ -251,3 +436,32 @@
 	c.Assert(m["abc"].value, Equals, 1)
 	c.Assert(m["ghi"].value, Equals, 3)
 }
+
+//var data []byte
+//func init() {
+//	var err error
+//	data, err = ioutil.ReadFile("/tmp/file.yaml")
+//	if err != nil {
+//		panic(err)
+//	}
+//}
+//
+//func (s *S) BenchmarkUnmarshal(c *C) {
+//	var err error
+//	for i := 0; i < c.N; i++ {
+//		var v map[string]interface{}
+//		err = goyaml.Unmarshal(data, &v)
+//	}
+//	if err != nil {
+//		panic(err)
+//	}
+//}
+//
+//func (s *S) BenchmarkMarshal(c *C) {
+//	var v map[string]interface{}
+//	goyaml.Unmarshal(data, &v)
+//	c.ResetTimer()
+//	for i := 0; i < c.N; i++ {
+//		goyaml.Marshal(&v)
+//	}
+//}
diff --git a/emitter.c b/emitter.c
deleted file mode 100644
index c4b56a2..0000000
--- a/emitter.c
+++ /dev/null
@@ -1,2329 +0,0 @@
-
-#include "yaml_private.h"
-
-/*
- * Flush the buffer if needed.
- */
-
-#define FLUSH(emitter)                                                          \
-    ((emitter->buffer.pointer+5 < emitter->buffer.end)                          \
-     || yaml_emitter_flush(emitter))
-
-/*
- * Put a character to the output buffer.
- */
-
-#define PUT(emitter,value)                                                      \
-    (FLUSH(emitter)                                                             \
-     && (*(emitter->buffer.pointer++) = (yaml_char_t)(value),                   \
-         emitter->column ++,                                                    \
-         1))
-
-/*
- * Put a line break to the output buffer.
- */
-
-#define PUT_BREAK(emitter)                                                      \
-    (FLUSH(emitter)                                                             \
-     && ((emitter->line_break == YAML_CR_BREAK ?                                \
-             (*(emitter->buffer.pointer++) = (yaml_char_t) '\r') :              \
-          emitter->line_break == YAML_LN_BREAK ?                                \
-             (*(emitter->buffer.pointer++) = (yaml_char_t) '\n') :              \
-          emitter->line_break == YAML_CRLN_BREAK ?                              \
-             (*(emitter->buffer.pointer++) = (yaml_char_t) '\r',                \
-              *(emitter->buffer.pointer++) = (yaml_char_t) '\n') : 0),          \
-         emitter->column = 0,                                                   \
-         emitter->line ++,                                                      \
-         1))
-
-/*
- * Copy a character from a string into buffer.
- */
-
-#define WRITE(emitter,string)                                                   \
-    (FLUSH(emitter)                                                             \
-     && (COPY(emitter->buffer,string),                                          \
-         emitter->column ++,                                                    \
-         1))
-
-/*
- * Copy a line break character from a string into buffer.
- */
-
-#define WRITE_BREAK(emitter,string)                                             \
-    (FLUSH(emitter)                                                             \
-     && (CHECK(string,'\n') ?                                                   \
-         (PUT_BREAK(emitter),                                                   \
-          string.pointer ++,                                                    \
-          1) :                                                                  \
-         (COPY(emitter->buffer,string),                                         \
-          emitter->column = 0,                                                  \
-          emitter->line ++,                                                     \
-          1)))
-
-/*
- * API functions.
- */
-
-YAML_DECLARE(int)
-yaml_emitter_emit(yaml_emitter_t *emitter, yaml_event_t *event);
-
-/*
- * Utility functions.
- */
-
-static int
-yaml_emitter_set_emitter_error(yaml_emitter_t *emitter, const char *problem);
-
-static int
-yaml_emitter_need_more_events(yaml_emitter_t *emitter);
-
-static int
-yaml_emitter_append_tag_directive(yaml_emitter_t *emitter,
-        yaml_tag_directive_t value, int allow_duplicates);
-
-static int
-yaml_emitter_increase_indent(yaml_emitter_t *emitter,
-        int flow, int indentless);
-
-/*
- * State functions.
- */
-
-static int
-yaml_emitter_state_machine(yaml_emitter_t *emitter, yaml_event_t *event);
-
-static int
-yaml_emitter_emit_stream_start(yaml_emitter_t *emitter,
-        yaml_event_t *event);
-
-static int
-yaml_emitter_emit_document_start(yaml_emitter_t *emitter,
-        yaml_event_t *event, int first);
-
-static int
-yaml_emitter_emit_document_content(yaml_emitter_t *emitter,
-        yaml_event_t *event);
-
-static int
-yaml_emitter_emit_document_end(yaml_emitter_t *emitter,
-        yaml_event_t *event);
-
-static int
-yaml_emitter_emit_flow_sequence_item(yaml_emitter_t *emitter,
-        yaml_event_t *event, int first);
-
-static int
-yaml_emitter_emit_flow_mapping_key(yaml_emitter_t *emitter,
-        yaml_event_t *event, int first);
-
-static int
-yaml_emitter_emit_flow_mapping_value(yaml_emitter_t *emitter,
-        yaml_event_t *event, int simple);
-
-static int
-yaml_emitter_emit_block_sequence_item(yaml_emitter_t *emitter,
-        yaml_event_t *event, int first);
-
-static int
-yaml_emitter_emit_block_mapping_key(yaml_emitter_t *emitter,
-        yaml_event_t *event, int first);
-
-static int
-yaml_emitter_emit_block_mapping_value(yaml_emitter_t *emitter,
-        yaml_event_t *event, int simple);
-
-static int
-yaml_emitter_emit_node(yaml_emitter_t *emitter, yaml_event_t *event,
-        int root, int sequence, int mapping, int simple_key);
-
-static int
-yaml_emitter_emit_alias(yaml_emitter_t *emitter, yaml_event_t *event);
-
-static int
-yaml_emitter_emit_scalar(yaml_emitter_t *emitter, yaml_event_t *event);
-
-static int
-yaml_emitter_emit_sequence_start(yaml_emitter_t *emitter, yaml_event_t *event);
-
-static int
-yaml_emitter_emit_mapping_start(yaml_emitter_t *emitter, yaml_event_t *event);
-
-/*
- * Checkers.
- */
-
-static int
-yaml_emitter_check_empty_document(yaml_emitter_t *emitter);
-
-static int
-yaml_emitter_check_empty_sequence(yaml_emitter_t *emitter);
-
-static int
-yaml_emitter_check_empty_mapping(yaml_emitter_t *emitter);
-
-static int
-yaml_emitter_check_simple_key(yaml_emitter_t *emitter);
-
-static int
-yaml_emitter_select_scalar_style(yaml_emitter_t *emitter, yaml_event_t *event);
-
-/*
- * Processors.
- */
-
-static int
-yaml_emitter_process_anchor(yaml_emitter_t *emitter);
-
-static int
-yaml_emitter_process_tag(yaml_emitter_t *emitter);
-
-static int
-yaml_emitter_process_scalar(yaml_emitter_t *emitter);
-
-/*
- * Analyzers.
- */
-
-static int
-yaml_emitter_analyze_version_directive(yaml_emitter_t *emitter,
-        yaml_version_directive_t version_directive);
-
-static int
-yaml_emitter_analyze_tag_directive(yaml_emitter_t *emitter,
-        yaml_tag_directive_t tag_directive);
-
-static int
-yaml_emitter_analyze_anchor(yaml_emitter_t *emitter,
-        yaml_char_t *anchor, int alias);
-
-static int
-yaml_emitter_analyze_tag(yaml_emitter_t *emitter,
-        yaml_char_t *tag);
-
-static int
-yaml_emitter_analyze_scalar(yaml_emitter_t *emitter,
-        yaml_char_t *value, size_t length);
-
-static int
-yaml_emitter_analyze_event(yaml_emitter_t *emitter,
-        yaml_event_t *event);
-
-/*
- * Writers.
- */
-
-static int
-yaml_emitter_write_bom(yaml_emitter_t *emitter);
-
-static int
-yaml_emitter_write_indent(yaml_emitter_t *emitter);
-
-static int
-yaml_emitter_write_indicator(yaml_emitter_t *emitter,
-        char *indicator, int need_whitespace,
-        int is_whitespace, int is_indention);
-
-static int
-yaml_emitter_write_anchor(yaml_emitter_t *emitter,
-        yaml_char_t *value, size_t length);
-
-static int
-yaml_emitter_write_tag_handle(yaml_emitter_t *emitter,
-        yaml_char_t *value, size_t length);
-
-static int
-yaml_emitter_write_tag_content(yaml_emitter_t *emitter,
-        yaml_char_t *value, size_t length, int need_whitespace);
-
-static int
-yaml_emitter_write_plain_scalar(yaml_emitter_t *emitter,
-        yaml_char_t *value, size_t length, int allow_breaks);
-
-static int
-yaml_emitter_write_single_quoted_scalar(yaml_emitter_t *emitter,
-        yaml_char_t *value, size_t length, int allow_breaks);
-
-static int
-yaml_emitter_write_double_quoted_scalar(yaml_emitter_t *emitter,
-        yaml_char_t *value, size_t length, int allow_breaks);
-
-static int
-yaml_emitter_write_block_scalar_hints(yaml_emitter_t *emitter,
-        yaml_string_t string);
-
-static int
-yaml_emitter_write_literal_scalar(yaml_emitter_t *emitter,
-        yaml_char_t *value, size_t length);
-
-static int
-yaml_emitter_write_folded_scalar(yaml_emitter_t *emitter,
-        yaml_char_t *value, size_t length);
-
-/*
- * Set an emitter error and return 0.
- */
-
-static int
-yaml_emitter_set_emitter_error(yaml_emitter_t *emitter, const char *problem)
-{
-    emitter->error = YAML_EMITTER_ERROR;
-    emitter->problem = problem;
-
-    return 0;
-}
-
-/*
- * Emit an event.
- */
-
-YAML_DECLARE(int)
-yaml_emitter_emit(yaml_emitter_t *emitter, yaml_event_t *event)
-{
-    if (!ENQUEUE(emitter, emitter->events, *event)) {
-        yaml_event_delete(event);
-        return 0;
-    }
-
-    while (!yaml_emitter_need_more_events(emitter)) {
-        if (!yaml_emitter_analyze_event(emitter, emitter->events.head))
-            return 0;
-        if (!yaml_emitter_state_machine(emitter, emitter->events.head))
-            return 0;
-        yaml_event_delete(&DEQUEUE(emitter, emitter->events));
-    }
-
-    return 1;
-}
-
-/*
- * Check if we need to accumulate more events before emitting.
- *
- * We accumulate extra
- *  - 1 event for DOCUMENT-START
- *  - 2 events for SEQUENCE-START
- *  - 3 events for MAPPING-START
- */
-
-static int
-yaml_emitter_need_more_events(yaml_emitter_t *emitter)
-{
-    int level = 0;
-    int accumulate = 0;
-    yaml_event_t *event;
-
-    if (QUEUE_EMPTY(emitter, emitter->events))
-        return 1;
-
-    switch (emitter->events.head->type) {
-        case YAML_DOCUMENT_START_EVENT:
-            accumulate = 1;
-            break;
-        case YAML_SEQUENCE_START_EVENT:
-            accumulate = 2;
-            break;
-        case YAML_MAPPING_START_EVENT:
-            accumulate = 3;
-            break;
-        default:
-            return 0;
-    }
-
-    if (emitter->events.tail - emitter->events.head > accumulate)
-        return 0;
-
-    for (event = emitter->events.head; event != emitter->events.tail; event ++) {
-        switch (event->type) {
-            case YAML_STREAM_START_EVENT:
-            case YAML_DOCUMENT_START_EVENT:
-            case YAML_SEQUENCE_START_EVENT:
-            case YAML_MAPPING_START_EVENT:
-                level += 1;
-                break;
-            case YAML_STREAM_END_EVENT:
-            case YAML_DOCUMENT_END_EVENT:
-            case YAML_SEQUENCE_END_EVENT:
-            case YAML_MAPPING_END_EVENT:
-                level -= 1;
-                break;
-            default:
-                break;
-        }
-        if (!level)
-            return 0;
-    }
-
-    return 1;
-}
-
-/*
- * Append a directive to the directives stack.
- */
-
-static int
-yaml_emitter_append_tag_directive(yaml_emitter_t *emitter,
-        yaml_tag_directive_t value, int allow_duplicates)
-{
-    yaml_tag_directive_t *tag_directive;
-    yaml_tag_directive_t copy = { NULL, NULL };
-
-    for (tag_directive = emitter->tag_directives.start;
-            tag_directive != emitter->tag_directives.top; tag_directive ++) {
-        if (strcmp((char *)value.handle, (char *)tag_directive->handle) == 0) {
-            if (allow_duplicates)
-                return 1;
-            return yaml_emitter_set_emitter_error(emitter,
-                    "duplicate %TAG directive");
-        }
-    }
-
-    copy.handle = yaml_strdup(value.handle);
-    copy.prefix = yaml_strdup(value.prefix);
-    if (!copy.handle || !copy.prefix) {
-        emitter->error = YAML_MEMORY_ERROR;
-        goto error;
-    }
-
-    if (!PUSH(emitter, emitter->tag_directives, copy))
-        goto error;
-
-    return 1;
-
-error:
-    yaml_free(copy.handle);
-    yaml_free(copy.prefix);
-    return 0;
-}
-
-/*
- * Increase the indentation level.
- */
-
-static int
-yaml_emitter_increase_indent(yaml_emitter_t *emitter,
-        int flow, int indentless)
-{
-    if (!PUSH(emitter, emitter->indents, emitter->indent))
-        return 0;
-
-    if (emitter->indent < 0) {
-        emitter->indent = flow ? emitter->best_indent : 0;
-    }
-    else if (!indentless) {
-        emitter->indent += emitter->best_indent;
-    }
-
-    return 1;
-}
-
-/*
- * State dispatcher.
- */
-
-static int
-yaml_emitter_state_machine(yaml_emitter_t *emitter, yaml_event_t *event)
-{
-    switch (emitter->state)
-    {
-        case YAML_EMIT_STREAM_START_STATE:
-            return yaml_emitter_emit_stream_start(emitter, event);
-
-        case YAML_EMIT_FIRST_DOCUMENT_START_STATE:
-            return yaml_emitter_emit_document_start(emitter, event, 1);
-
-        case YAML_EMIT_DOCUMENT_START_STATE:
-            return yaml_emitter_emit_document_start(emitter, event, 0);
-
-        case YAML_EMIT_DOCUMENT_CONTENT_STATE:
-            return yaml_emitter_emit_document_content(emitter, event);
-
-        case YAML_EMIT_DOCUMENT_END_STATE:
-            return yaml_emitter_emit_document_end(emitter, event);
-
-        case YAML_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE:
-            return yaml_emitter_emit_flow_sequence_item(emitter, event, 1);
-
-        case YAML_EMIT_FLOW_SEQUENCE_ITEM_STATE:
-            return yaml_emitter_emit_flow_sequence_item(emitter, event, 0);
-
-        case YAML_EMIT_FLOW_MAPPING_FIRST_KEY_STATE:
-            return yaml_emitter_emit_flow_mapping_key(emitter, event, 1);
-
-        case YAML_EMIT_FLOW_MAPPING_KEY_STATE:
-            return yaml_emitter_emit_flow_mapping_key(emitter, event, 0);
-
-        case YAML_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE:
-            return yaml_emitter_emit_flow_mapping_value(emitter, event, 1);
-
-        case YAML_EMIT_FLOW_MAPPING_VALUE_STATE:
-            return yaml_emitter_emit_flow_mapping_value(emitter, event, 0);
-
-        case YAML_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE:
-            return yaml_emitter_emit_block_sequence_item(emitter, event, 1);
-
-        case YAML_EMIT_BLOCK_SEQUENCE_ITEM_STATE:
-            return yaml_emitter_emit_block_sequence_item(emitter, event, 0);
-
-        case YAML_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE:
-            return yaml_emitter_emit_block_mapping_key(emitter, event, 1);
-
-        case YAML_EMIT_BLOCK_MAPPING_KEY_STATE:
-            return yaml_emitter_emit_block_mapping_key(emitter, event, 0);
-
-        case YAML_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE:
-            return yaml_emitter_emit_block_mapping_value(emitter, event, 1);
-
-        case YAML_EMIT_BLOCK_MAPPING_VALUE_STATE:
-            return yaml_emitter_emit_block_mapping_value(emitter, event, 0);
-
-        case YAML_EMIT_END_STATE:
-            return yaml_emitter_set_emitter_error(emitter,
-                    "expected nothing after STREAM-END");
-
-        default:
-            assert(1);      /* Invalid state. */
-    }
-
-    return 0;
-}
-
-/*
- * Expect STREAM-START.
- */
-
-static int
-yaml_emitter_emit_stream_start(yaml_emitter_t *emitter,
-        yaml_event_t *event)
-{
-    if (event->type == YAML_STREAM_START_EVENT)
-    {
-        if (!emitter->encoding) {
-            emitter->encoding = event->data.stream_start.encoding;
-        }
-
-        if (!emitter->encoding) {
-            emitter->encoding = YAML_UTF8_ENCODING;
-        }
-
-        if (emitter->best_indent < 2 || emitter->best_indent > 9) {
-            emitter->best_indent  = 2;
-        }
-
-        if (emitter->best_width >= 0
-                && emitter->best_width <= emitter->best_indent*2) {
-            emitter->best_width = 80;
-        }
-
-        if (emitter->best_width < 0) {
-            emitter->best_width = INT_MAX;
-        }
-        
-        if (!emitter->line_break) {
-            emitter->line_break = YAML_LN_BREAK;
-        }
-
-        emitter->indent = -1;
-
-        emitter->line = 0;
-        emitter->column = 0;
-        emitter->whitespace = 1;
-        emitter->indention = 1;
-
-        if (emitter->encoding != YAML_UTF8_ENCODING) {
-            if (!yaml_emitter_write_bom(emitter))
-                return 0;
-        }
-
-        emitter->state = YAML_EMIT_FIRST_DOCUMENT_START_STATE;
-
-        return 1;
-    }
-
-    return yaml_emitter_set_emitter_error(emitter,
-            "expected STREAM-START");
-}
-
-/*
- * Expect DOCUMENT-START or STREAM-END.
- */
-
-static int
-yaml_emitter_emit_document_start(yaml_emitter_t *emitter,
-        yaml_event_t *event, int first)
-{
-    if (event->type == YAML_DOCUMENT_START_EVENT)
-    {
-        yaml_tag_directive_t default_tag_directives[] = {
-            {(yaml_char_t *)"!", (yaml_char_t *)"!"},
-            {(yaml_char_t *)"!!", (yaml_char_t *)"tag:yaml.org,2002:"},
-            {NULL, NULL}
-        };
-        yaml_tag_directive_t *tag_directive;
-        int implicit;
-
-        if (event->data.document_start.version_directive) {
-            if (!yaml_emitter_analyze_version_directive(emitter,
-                        *event->data.document_start.version_directive))
-                return 0;
-        }
-
-        for (tag_directive = event->data.document_start.tag_directives.start;
-                tag_directive != event->data.document_start.tag_directives.end;
-                tag_directive ++) {
-            if (!yaml_emitter_analyze_tag_directive(emitter, *tag_directive))
-                return 0;
-            if (!yaml_emitter_append_tag_directive(emitter, *tag_directive, 0))
-                return 0;
-        }
-
-        for (tag_directive = default_tag_directives;
-                tag_directive->handle; tag_directive ++) {
-            if (!yaml_emitter_append_tag_directive(emitter, *tag_directive, 1))
-                return 0;
-        }
-
-        implicit = event->data.document_start.implicit;
-        if (!first || emitter->canonical) {
-            implicit = 0;
-        }
-
-        if ((event->data.document_start.version_directive ||
-                    (event->data.document_start.tag_directives.start
-                     != event->data.document_start.tag_directives.end)) &&
-                emitter->open_ended)
-        {
-            if (!yaml_emitter_write_indicator(emitter, "...", 1, 0, 0))
-                return 0;
-            if (!yaml_emitter_write_indent(emitter))
-                return 0;
-        }
-
-        if (event->data.document_start.version_directive) {
-            implicit = 0;
-            if (!yaml_emitter_write_indicator(emitter, "%YAML", 1, 0, 0))
-                return 0;
-            if (!yaml_emitter_write_indicator(emitter, "1.1", 1, 0, 0))
-                return 0;
-            if (!yaml_emitter_write_indent(emitter))
-                return 0;
-        }
-        
-        if (event->data.document_start.tag_directives.start
-                != event->data.document_start.tag_directives.end) {
-            implicit = 0;
-            for (tag_directive = event->data.document_start.tag_directives.start;
-                    tag_directive != event->data.document_start.tag_directives.end;
-                    tag_directive ++) {
-                if (!yaml_emitter_write_indicator(emitter, "%TAG", 1, 0, 0))
-                    return 0;
-                if (!yaml_emitter_write_tag_handle(emitter, tag_directive->handle,
-                            strlen((char *)tag_directive->handle)))
-                    return 0;
-                if (!yaml_emitter_write_tag_content(emitter, tag_directive->prefix,
-                            strlen((char *)tag_directive->prefix), 1))
-                    return 0;
-                if (!yaml_emitter_write_indent(emitter))
-                    return 0;
-            }
-        }
-
-        if (yaml_emitter_check_empty_document(emitter)) {
-            implicit = 0;
-        }
-
-        if (!implicit) {
-            if (!yaml_emitter_write_indent(emitter))
-                return 0;
-            if (!yaml_emitter_write_indicator(emitter, "---", 1, 0, 0))
-                return 0;
-            if (emitter->canonical) {
-                if (!yaml_emitter_write_indent(emitter))
-                    return 0;
-            }
-        }
-
-        emitter->state = YAML_EMIT_DOCUMENT_CONTENT_STATE;
-
-        return 1;
-    }
-
-    else if (event->type == YAML_STREAM_END_EVENT)
-    {
-        if (emitter->open_ended)
-        {
-            if (!yaml_emitter_write_indicator(emitter, "...", 1, 0, 0))
-                return 0;
-            if (!yaml_emitter_write_indent(emitter))
-                return 0;
-        }
-
-        if (!yaml_emitter_flush(emitter))
-            return 0;
-
-        emitter->state = YAML_EMIT_END_STATE;
-
-        return 1;
-    }
-
-    return yaml_emitter_set_emitter_error(emitter,
-            "expected DOCUMENT-START or STREAM-END");
-}
-
-/*
- * Expect the root node.
- */
-
-static int
-yaml_emitter_emit_document_content(yaml_emitter_t *emitter,
-        yaml_event_t *event)
-{
-    if (!PUSH(emitter, emitter->states, YAML_EMIT_DOCUMENT_END_STATE))
-        return 0;
-
-    return yaml_emitter_emit_node(emitter, event, 1, 0, 0, 0);
-}
-
-/*
- * Expect DOCUMENT-END.
- */
-
-static int
-yaml_emitter_emit_document_end(yaml_emitter_t *emitter,
-        yaml_event_t *event)
-{
-    if (event->type == YAML_DOCUMENT_END_EVENT)
-    {
-        if (!yaml_emitter_write_indent(emitter))
-            return 0;
-        if (!event->data.document_end.implicit) {
-            if (!yaml_emitter_write_indicator(emitter, "...", 1, 0, 0))
-                return 0;
-            if (!yaml_emitter_write_indent(emitter))
-                return 0;
-        }
-        if (!yaml_emitter_flush(emitter))
-            return 0;
-
-        emitter->state = YAML_EMIT_DOCUMENT_START_STATE;
-
-        while (!STACK_EMPTY(emitter, emitter->tag_directives)) {
-            yaml_tag_directive_t tag_directive = POP(emitter,
-                    emitter->tag_directives);
-            yaml_free(tag_directive.handle);
-            yaml_free(tag_directive.prefix);
-        }
-
-        return 1;
-    }
-
-    return yaml_emitter_set_emitter_error(emitter,
-            "expected DOCUMENT-END");
-}
-
-/*
- * 
- * Expect a flow item node.
- */
-
-static int
-yaml_emitter_emit_flow_sequence_item(yaml_emitter_t *emitter,
-        yaml_event_t *event, int first)
-{
-    if (first)
-    {
-        if (!yaml_emitter_write_indicator(emitter, "[", 1, 1, 0))
-            return 0;
-        if (!yaml_emitter_increase_indent(emitter, 1, 0))
-            return 0;
-        emitter->flow_level ++;
-    }
-
-    if (event->type == YAML_SEQUENCE_END_EVENT)
-    {
-        emitter->flow_level --;
-        emitter->indent = POP(emitter, emitter->indents);
-        if (emitter->canonical && !first) {
-            if (!yaml_emitter_write_indicator(emitter, ",", 0, 0, 0))
-                return 0;
-            if (!yaml_emitter_write_indent(emitter))
-                return 0;
-        }
-        if (!yaml_emitter_write_indicator(emitter, "]", 0, 0, 0))
-            return 0;
-        emitter->state = POP(emitter, emitter->states);
-
-        return 1;
-    }
-
-    if (!first) {
-        if (!yaml_emitter_write_indicator(emitter, ",", 0, 0, 0))
-            return 0;
-    }
-
-    if (emitter->canonical || emitter->column > emitter->best_width) {
-        if (!yaml_emitter_write_indent(emitter))
-            return 0;
-    }
-    if (!PUSH(emitter, emitter->states, YAML_EMIT_FLOW_SEQUENCE_ITEM_STATE))
-        return 0;
-
-    return yaml_emitter_emit_node(emitter, event, 0, 1, 0, 0);
-}
-
-/*
- * Expect a flow key node.
- */
-
-static int
-yaml_emitter_emit_flow_mapping_key(yaml_emitter_t *emitter,
-        yaml_event_t *event, int first)
-{
-    if (first)
-    {
-        if (!yaml_emitter_write_indicator(emitter, "{", 1, 1, 0))
-            return 0;
-        if (!yaml_emitter_increase_indent(emitter, 1, 0))
-            return 0;
-        emitter->flow_level ++;
-    }
-
-    if (event->type == YAML_MAPPING_END_EVENT)
-    {
-        emitter->flow_level --;
-        emitter->indent = POP(emitter, emitter->indents);
-        if (emitter->canonical && !first) {
-            if (!yaml_emitter_write_indicator(emitter, ",", 0, 0, 0))
-                return 0;
-            if (!yaml_emitter_write_indent(emitter))
-                return 0;
-        }
-        if (!yaml_emitter_write_indicator(emitter, "}", 0, 0, 0))
-            return 0;
-        emitter->state = POP(emitter, emitter->states);
-
-        return 1;
-    }
-
-    if (!first) {
-        if (!yaml_emitter_write_indicator(emitter, ",", 0, 0, 0))
-            return 0;
-    }
-    if (emitter->canonical || emitter->column > emitter->best_width) {
-        if (!yaml_emitter_write_indent(emitter))
-            return 0;
-    }
-
-    if (!emitter->canonical && yaml_emitter_check_simple_key(emitter))
-    {
-        if (!PUSH(emitter, emitter->states,
-                    YAML_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE))
-            return 0;
-
-        return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 1);
-    }
-    else
-    {
-        if (!yaml_emitter_write_indicator(emitter, "?", 1, 0, 0))
-            return 0;
-        if (!PUSH(emitter, emitter->states,
-                    YAML_EMIT_FLOW_MAPPING_VALUE_STATE))
-            return 0;
-
-        return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 0);
-    }
-}
-
-/*
- * Expect a flow value node.
- */
-
-static int
-yaml_emitter_emit_flow_mapping_value(yaml_emitter_t *emitter,
-        yaml_event_t *event, int simple)
-{
-    if (simple) {
-        if (!yaml_emitter_write_indicator(emitter, ":", 0, 0, 0))
-            return 0;
-    }
-    else {
-        if (emitter->canonical || emitter->column > emitter->best_width) {
-            if (!yaml_emitter_write_indent(emitter))
-                return 0;
-        }
-        if (!yaml_emitter_write_indicator(emitter, ":", 1, 0, 0))
-            return 0;
-    }
-    if (!PUSH(emitter, emitter->states, YAML_EMIT_FLOW_MAPPING_KEY_STATE))
-        return 0;
-    return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 0);
-}
-
-/*
- * Expect a block item node.
- */
-
-static int
-yaml_emitter_emit_block_sequence_item(yaml_emitter_t *emitter,
-        yaml_event_t *event, int first)
-{
-    if (first)
-    {
-        if (!yaml_emitter_increase_indent(emitter, 0,
-                    (emitter->mapping_context && !emitter->indention)))
-            return 0;
-    }
-
-    if (event->type == YAML_SEQUENCE_END_EVENT)
-    {
-        emitter->indent = POP(emitter, emitter->indents);
-        emitter->state = POP(emitter, emitter->states);
-
-        return 1;
-    }
-
-    if (!yaml_emitter_write_indent(emitter))
-        return 0;
-    if (!yaml_emitter_write_indicator(emitter, "-", 1, 0, 1))
-        return 0;
-    if (!PUSH(emitter, emitter->states,
-                YAML_EMIT_BLOCK_SEQUENCE_ITEM_STATE))
-        return 0;
-
-    return yaml_emitter_emit_node(emitter, event, 0, 1, 0, 0);
-}
-
-/*
- * Expect a block key node.
- */
-
-static int
-yaml_emitter_emit_block_mapping_key(yaml_emitter_t *emitter,
-        yaml_event_t *event, int first)
-{
-    if (first)
-    {
-        if (!yaml_emitter_increase_indent(emitter, 0, 0))
-            return 0;
-    }
-
-    if (event->type == YAML_MAPPING_END_EVENT)
-    {
-        emitter->indent = POP(emitter, emitter->indents);
-        emitter->state = POP(emitter, emitter->states);
-
-        return 1;
-    }
-
-    if (!yaml_emitter_write_indent(emitter))
-        return 0;
-
-    if (yaml_emitter_check_simple_key(emitter))
-    {
-        if (!PUSH(emitter, emitter->states,
-                    YAML_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE))
-            return 0;
-
-        return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 1);
-    }
-    else
-    {
-        if (!yaml_emitter_write_indicator(emitter, "?", 1, 0, 1))
-            return 0;
-        if (!PUSH(emitter, emitter->states,
-                    YAML_EMIT_BLOCK_MAPPING_VALUE_STATE))
-            return 0;
-
-        return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 0);
-    }
-}
-
-/*
- * Expect a block value node.
- */
-
-static int
-yaml_emitter_emit_block_mapping_value(yaml_emitter_t *emitter,
-        yaml_event_t *event, int simple)
-{
-    if (simple) {
-        if (!yaml_emitter_write_indicator(emitter, ":", 0, 0, 0))
-            return 0;
-    }
-    else {
-        if (!yaml_emitter_write_indent(emitter))
-            return 0;
-        if (!yaml_emitter_write_indicator(emitter, ":", 1, 0, 1))
-            return 0;
-    }
-    if (!PUSH(emitter, emitter->states,
-                YAML_EMIT_BLOCK_MAPPING_KEY_STATE))
-        return 0;
-
-    return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 0);
-}
-
-/*
- * Expect a node.
- */
-
-static int
-yaml_emitter_emit_node(yaml_emitter_t *emitter, yaml_event_t *event,
-        int root, int sequence, int mapping, int simple_key)
-{
-    emitter->root_context = root;
-    emitter->sequence_context = sequence;
-    emitter->mapping_context = mapping;
-    emitter->simple_key_context = simple_key;
-
-    switch (event->type)
-    {
-        case YAML_ALIAS_EVENT:
-            return yaml_emitter_emit_alias(emitter, event);
-
-        case YAML_SCALAR_EVENT:
-            return yaml_emitter_emit_scalar(emitter, event);
-
-        case YAML_SEQUENCE_START_EVENT:
-            return yaml_emitter_emit_sequence_start(emitter, event);
-
-        case YAML_MAPPING_START_EVENT:
-            return yaml_emitter_emit_mapping_start(emitter, event);
-
-        default:
-            return yaml_emitter_set_emitter_error(emitter,
-                    "expected SCALAR, SEQUENCE-START, MAPPING-START, or ALIAS");
-    }
-
-    return 0;
-}
-
-/*
- * Expect ALIAS.
- */
-
-static int
-yaml_emitter_emit_alias(yaml_emitter_t *emitter, yaml_event_t *event)
-{
-    if (!yaml_emitter_process_anchor(emitter))
-        return 0;
-    emitter->state = POP(emitter, emitter->states);
-
-    return 1;
-}
-
-/*
- * Expect SCALAR.
- */
-
-static int
-yaml_emitter_emit_scalar(yaml_emitter_t *emitter, yaml_event_t *event)
-{
-    if (!yaml_emitter_select_scalar_style(emitter, event))
-        return 0;
-    if (!yaml_emitter_process_anchor(emitter))
-        return 0;
-    if (!yaml_emitter_process_tag(emitter))
-        return 0;
-    if (!yaml_emitter_increase_indent(emitter, 1, 0))
-        return 0;
-    if (!yaml_emitter_process_scalar(emitter))
-        return 0;
-    emitter->indent = POP(emitter, emitter->indents);
-    emitter->state = POP(emitter, emitter->states);
-
-    return 1;
-}
-
-/*
- * Expect SEQUENCE-START.
- */
-
-static int
-yaml_emitter_emit_sequence_start(yaml_emitter_t *emitter, yaml_event_t *event)
-{
-    if (!yaml_emitter_process_anchor(emitter))
-        return 0;
-    if (!yaml_emitter_process_tag(emitter))
-        return 0;
-
-    if (emitter->flow_level || emitter->canonical
-            || event->data.sequence_start.style == YAML_FLOW_SEQUENCE_STYLE
-            || yaml_emitter_check_empty_sequence(emitter)) {
-        emitter->state = YAML_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE;
-    }
-    else {
-        emitter->state = YAML_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE;
-    }
-
-    return 1;
-}
-
-/*
- * Expect MAPPING-START.
- */
-
-static int
-yaml_emitter_emit_mapping_start(yaml_emitter_t *emitter, yaml_event_t *event)
-{
-    if (!yaml_emitter_process_anchor(emitter))
-        return 0;
-    if (!yaml_emitter_process_tag(emitter))
-        return 0;
-
-    if (emitter->flow_level || emitter->canonical
-            || event->data.mapping_start.style == YAML_FLOW_MAPPING_STYLE
-            || yaml_emitter_check_empty_mapping(emitter)) {
-        emitter->state = YAML_EMIT_FLOW_MAPPING_FIRST_KEY_STATE;
-    }
-    else {
-        emitter->state = YAML_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE;
-    }
-
-    return 1;
-}
-
-/*
- * Check if the document content is an empty scalar.
- */
-
-static int
-yaml_emitter_check_empty_document(yaml_emitter_t *emitter)
-{
-    return 0;
-}
-
-/*
- * Check if the next events represent an empty sequence.
- */
-
-static int
-yaml_emitter_check_empty_sequence(yaml_emitter_t *emitter)
-{
-    if (emitter->events.tail - emitter->events.head < 2)
-        return 0;
-
-    return (emitter->events.head[0].type == YAML_SEQUENCE_START_EVENT
-            && emitter->events.head[1].type == YAML_SEQUENCE_END_EVENT);
-}
-
-/*
- * Check if the next events represent an empty mapping.
- */
-
-static int
-yaml_emitter_check_empty_mapping(yaml_emitter_t *emitter)
-{
-    if (emitter->events.tail - emitter->events.head < 2)
-        return 0;
-
-    return (emitter->events.head[0].type == YAML_MAPPING_START_EVENT
-            && emitter->events.head[1].type == YAML_MAPPING_END_EVENT);
-}
-
-/*
- * Check if the next node can be expressed as a simple key.
- */
-
-static int
-yaml_emitter_check_simple_key(yaml_emitter_t *emitter)
-{
-    yaml_event_t *event = emitter->events.head;
-    size_t length = 0;
-
-    switch (event->type)
-    {
-        case YAML_ALIAS_EVENT:
-            length += emitter->anchor_data.anchor_length;
-            break;
-
-        case YAML_SCALAR_EVENT:
-            if (emitter->scalar_data.multiline)
-                return 0;
-            length += emitter->anchor_data.anchor_length
-                + emitter->tag_data.handle_length
-                + emitter->tag_data.suffix_length
-                + emitter->scalar_data.length;
-            break;
-
-        case YAML_SEQUENCE_START_EVENT:
-            if (!yaml_emitter_check_empty_sequence(emitter))
-                return 0;
-            length += emitter->anchor_data.anchor_length
-                + emitter->tag_data.handle_length
-                + emitter->tag_data.suffix_length;
-            break;
-
-        case YAML_MAPPING_START_EVENT:
-            if (!yaml_emitter_check_empty_mapping(emitter))
-                return 0;
-            length += emitter->anchor_data.anchor_length
-                + emitter->tag_data.handle_length
-                + emitter->tag_data.suffix_length;
-            break;
-
-        default:
-            return 0;
-    }
-
-    if (length > 128)
-        return 0;
-
-    return 1;
-}
-
-/*
- * Determine an acceptable scalar style.
- */
-
-static int
-yaml_emitter_select_scalar_style(yaml_emitter_t *emitter, yaml_event_t *event)
-{
-    yaml_scalar_style_t style = event->data.scalar.style;
-    int no_tag = (!emitter->tag_data.handle && !emitter->tag_data.suffix);
-
-    if (no_tag && !event->data.scalar.plain_implicit
-            && !event->data.scalar.quoted_implicit) {
-        return yaml_emitter_set_emitter_error(emitter,
-                "neither tag nor implicit flags are specified");
-    }
-
-    if (style == YAML_ANY_SCALAR_STYLE)
-        style = YAML_PLAIN_SCALAR_STYLE;
-
-    if (emitter->canonical)
-        style = YAML_DOUBLE_QUOTED_SCALAR_STYLE;
-
-    if (emitter->simple_key_context && emitter->scalar_data.multiline)
-        style = YAML_DOUBLE_QUOTED_SCALAR_STYLE;
-
-    if (style == YAML_PLAIN_SCALAR_STYLE)
-    {
-        if ((emitter->flow_level && !emitter->scalar_data.flow_plain_allowed)
-                || (!emitter->flow_level && !emitter->scalar_data.block_plain_allowed))
-            style = YAML_SINGLE_QUOTED_SCALAR_STYLE;
-        if (!emitter->scalar_data.length
-                && (emitter->flow_level || emitter->simple_key_context))
-            style = YAML_SINGLE_QUOTED_SCALAR_STYLE;
-        if (no_tag && !event->data.scalar.plain_implicit)
-            style = YAML_SINGLE_QUOTED_SCALAR_STYLE;
-    }
-
-    if (style == YAML_SINGLE_QUOTED_SCALAR_STYLE)
-    {
-        if (!emitter->scalar_data.single_quoted_allowed)
-            style = YAML_DOUBLE_QUOTED_SCALAR_STYLE;
-    }
-
-    if (style == YAML_LITERAL_SCALAR_STYLE || style == YAML_FOLDED_SCALAR_STYLE)
-    {
-        if (!emitter->scalar_data.block_allowed
-                || emitter->flow_level || emitter->simple_key_context)
-            style = YAML_DOUBLE_QUOTED_SCALAR_STYLE;
-    }
-
-    if (no_tag && !event->data.scalar.quoted_implicit
-            && style != YAML_PLAIN_SCALAR_STYLE)
-    {
-        emitter->tag_data.handle = (yaml_char_t *)"!";
-        emitter->tag_data.handle_length = 1;
-    }
-
-    emitter->scalar_data.style = style;
-
-    return 1;
-}
-
-/*
- * Write an achor.
- */
-
-static int
-yaml_emitter_process_anchor(yaml_emitter_t *emitter)
-{
-    if (!emitter->anchor_data.anchor)
-        return 1;
-
-    if (!yaml_emitter_write_indicator(emitter,
-                (emitter->anchor_data.alias ? "*" : "&"), 1, 0, 0))
-        return 0;
-
-    return yaml_emitter_write_anchor(emitter,
-            emitter->anchor_data.anchor, emitter->anchor_data.anchor_length);
-}
-
-/*
- * Write a tag.
- */
-
-static int
-yaml_emitter_process_tag(yaml_emitter_t *emitter)
-{
-    if (!emitter->tag_data.handle && !emitter->tag_data.suffix)
-        return 1;
-
-    if (emitter->tag_data.handle)
-    {
-        if (!yaml_emitter_write_tag_handle(emitter, emitter->tag_data.handle,
-                    emitter->tag_data.handle_length))
-            return 0;
-        if (emitter->tag_data.suffix) {
-            if (!yaml_emitter_write_tag_content(emitter, emitter->tag_data.suffix,
-                        emitter->tag_data.suffix_length, 0))
-                return 0;
-        }
-    }
-    else
-    {
-        if (!yaml_emitter_write_indicator(emitter, "!<", 1, 0, 0))
-            return 0;
-        if (!yaml_emitter_write_tag_content(emitter, emitter->tag_data.suffix,
-                    emitter->tag_data.suffix_length, 0))
-            return 0;
-        if (!yaml_emitter_write_indicator(emitter, ">", 0, 0, 0))
-            return 0;
-    }
-
-    return 1;
-}
-
-/*
- * Write a scalar.
- */
-
-static int
-yaml_emitter_process_scalar(yaml_emitter_t *emitter)
-{
-    switch (emitter->scalar_data.style)
-    {
-        case YAML_PLAIN_SCALAR_STYLE:
-            return yaml_emitter_write_plain_scalar(emitter,
-                    emitter->scalar_data.value, emitter->scalar_data.length,
-                    !emitter->simple_key_context);
-
-        case YAML_SINGLE_QUOTED_SCALAR_STYLE:
-            return yaml_emitter_write_single_quoted_scalar(emitter,
-                    emitter->scalar_data.value, emitter->scalar_data.length,
-                    !emitter->simple_key_context);
-
-        case YAML_DOUBLE_QUOTED_SCALAR_STYLE:
-            return yaml_emitter_write_double_quoted_scalar(emitter,
-                    emitter->scalar_data.value, emitter->scalar_data.length,
-                    !emitter->simple_key_context);
-
-        case YAML_LITERAL_SCALAR_STYLE:
-            return yaml_emitter_write_literal_scalar(emitter,
-                    emitter->scalar_data.value, emitter->scalar_data.length);
-
-        case YAML_FOLDED_SCALAR_STYLE:
-            return yaml_emitter_write_folded_scalar(emitter,
-                    emitter->scalar_data.value, emitter->scalar_data.length);
-
-        default:
-            assert(1);      /* Impossible. */
-    }
-
-    return 0;
-}
-
-/*
- * Check if a %YAML directive is valid.
- */
-
-static int
-yaml_emitter_analyze_version_directive(yaml_emitter_t *emitter,
-        yaml_version_directive_t version_directive)
-{
-    if (version_directive.major != 1 || version_directive.minor != 1) {
-        return yaml_emitter_set_emitter_error(emitter,
-                "incompatible %YAML directive");
-    }
-
-    return 1;
-}
-
-/*
- * Check if a %TAG directive is valid.
- */
-
-static int
-yaml_emitter_analyze_tag_directive(yaml_emitter_t *emitter,
-        yaml_tag_directive_t tag_directive)
-{
-    yaml_string_t handle;
-    yaml_string_t prefix;
-    size_t handle_length;
-    size_t prefix_length;
-
-    handle_length = strlen((char *)tag_directive.handle);
-    prefix_length = strlen((char *)tag_directive.prefix);
-    STRING_ASSIGN(handle, tag_directive.handle, handle_length);
-    STRING_ASSIGN(prefix, tag_directive.prefix, prefix_length);
-
-    if (handle.start == handle.end) {
-        return yaml_emitter_set_emitter_error(emitter,
-                "tag handle must not be empty");
-    }
-
-    if (handle.start[0] != '!') {
-        return yaml_emitter_set_emitter_error(emitter,
-                "tag handle must start with '!'");
-    }
-
-    if (handle.end[-1] != '!') {
-        return yaml_emitter_set_emitter_error(emitter,
-                "tag handle must end with '!'");
-    }
-
-    handle.pointer ++;
-
-    while (handle.pointer < handle.end-1) {
-        if (!IS_ALPHA(handle)) {
-            return yaml_emitter_set_emitter_error(emitter,
-                    "tag handle must contain alphanumerical characters only");
-        }
-        MOVE(handle);
-    }
-
-    if (prefix.start == prefix.end) {
-        return yaml_emitter_set_emitter_error(emitter,
-                "tag prefix must not be empty");
-    }
-
-    return 1;
-}
-
-/*
- * Check if an anchor is valid.
- */
-
-static int
-yaml_emitter_analyze_anchor(yaml_emitter_t *emitter,
-        yaml_char_t *anchor, int alias)
-{
-    size_t anchor_length;
-    yaml_string_t string;
-    
-    anchor_length = strlen((char *)anchor);
-    STRING_ASSIGN(string, anchor, anchor_length);
-
-    if (string.start == string.end) {
-        return yaml_emitter_set_emitter_error(emitter, alias ?
-                "alias value must not be empty" :
-                "anchor value must not be empty");
-    }
-
-    while (string.pointer != string.end) {
-        if (!IS_ALPHA(string)) {
-            return yaml_emitter_set_emitter_error(emitter, alias ?
-                    "alias value must contain alphanumerical characters only" :
-                    "anchor value must contain alphanumerical characters only");
-        }
-        MOVE(string);
-    }
-
-    emitter->anchor_data.anchor = string.start;
-    emitter->anchor_data.anchor_length = string.end - string.start;
-    emitter->anchor_data.alias = alias;
-
-    return 1;
-}
-
-/*
- * Check if a tag is valid.
- */
-
-static int
-yaml_emitter_analyze_tag(yaml_emitter_t *emitter,
-        yaml_char_t *tag)
-{
-    size_t tag_length;
-    yaml_string_t string;
-    yaml_tag_directive_t *tag_directive;
-
-    tag_length = strlen((char *)tag);
-    STRING_ASSIGN(string, tag, tag_length);
-
-    if (string.start == string.end) {
-        return yaml_emitter_set_emitter_error(emitter,
-                "tag value must not be empty");
-    }
-
-    for (tag_directive = emitter->tag_directives.start;
-            tag_directive != emitter->tag_directives.top; tag_directive ++) {
-        size_t prefix_length = strlen((char *)tag_directive->prefix);
-        if (prefix_length < (size_t)(string.end - string.start)
-                && strncmp((char *)tag_directive->prefix, (char *)string.start,
-                    prefix_length) == 0)
-        {
-            emitter->tag_data.handle = tag_directive->handle;
-            emitter->tag_data.handle_length =
-                strlen((char *)tag_directive->handle);
-            emitter->tag_data.suffix = string.start + prefix_length;
-            emitter->tag_data.suffix_length =
-                (string.end - string.start) - prefix_length;
-            return 1;
-        }
-    }
-
-    emitter->tag_data.suffix = string.start;
-    emitter->tag_data.suffix_length = string.end - string.start;
-
-    return 1;
-}
-
-/*
- * Check if a scalar is valid.
- */
-
-static int
-yaml_emitter_analyze_scalar(yaml_emitter_t *emitter,
-        yaml_char_t *value, size_t length)
-{
-    yaml_string_t string;
-
-    int block_indicators = 0;
-    int flow_indicators = 0;
-    int line_breaks = 0;
-    int special_characters = 0;
-
-    int leading_space = 0;
-    int leading_break = 0;
-    int trailing_space = 0;
-    int trailing_break = 0;
-    int break_space = 0;
-    int space_break = 0;
-
-    int preceeded_by_whitespace = 0;
-    int followed_by_whitespace = 0;
-    int previous_space = 0;
-    int previous_break = 0;
-
-    STRING_ASSIGN(string, value, length);
-
-    emitter->scalar_data.value = value;
-    emitter->scalar_data.length = length;
-
-    if (string.start == string.end)
-    {
-        emitter->scalar_data.multiline = 0;
-        emitter->scalar_data.flow_plain_allowed = 0;
-        emitter->scalar_data.block_plain_allowed = 1;
-        emitter->scalar_data.single_quoted_allowed = 1;
-        emitter->scalar_data.block_allowed = 0;
-
-        return 1;
-    }
-
-    if ((CHECK_AT(string, '-', 0)
-                && CHECK_AT(string, '-', 1)
-                && CHECK_AT(string, '-', 2))
-            || (CHECK_AT(string, '.', 0)
-                && CHECK_AT(string, '.', 1)
-                && CHECK_AT(string, '.', 2))) {
-        block_indicators = 1;
-        flow_indicators = 1;
-    }
-
-    preceeded_by_whitespace = 1;
-    followed_by_whitespace = IS_BLANKZ_AT(string, WIDTH(string));
-
-    while (string.pointer != string.end)
-    {
-        if (string.start == string.pointer)
-        {
-            if (CHECK(string, '#') || CHECK(string, ',')
-                    || CHECK(string, '[') || CHECK(string, ']')
-                    || CHECK(string, '{') || CHECK(string, '}')
-                    || CHECK(string, '&') || CHECK(string, '*')
-                    || CHECK(string, '!') || CHECK(string, '|')
-                    || CHECK(string, '>') || CHECK(string, '\'')
-                    || CHECK(string, '"') || CHECK(string, '%')
-                    || CHECK(string, '@') || CHECK(string, '`')) {
-                flow_indicators = 1;
-                block_indicators = 1;
-            }
-
-            if (CHECK(string, '?') || CHECK(string, ':')) {
-                flow_indicators = 1;
-                if (followed_by_whitespace) {
-                    block_indicators = 1;
-                }
-            }
-
-            if (CHECK(string, '-') && followed_by_whitespace) {
-                flow_indicators = 1;
-                block_indicators = 1;
-            }
-        }
-        else
-        {
-            if (CHECK(string, ',') || CHECK(string, '?')
-                    || CHECK(string, '[') || CHECK(string, ']')
-                    || CHECK(string, '{') || CHECK(string, '}')) {
-                flow_indicators = 1;
-            }
-
-            if (CHECK(string, ':')) {
-                flow_indicators = 1;
-                if (followed_by_whitespace) {
-                    block_indicators = 1;
-                }
-            }
-
-            if (CHECK(string, '#') && preceeded_by_whitespace) {
-                flow_indicators = 1;
-                block_indicators = 1;
-            }
-        }
-
-        if (!IS_PRINTABLE(string)
-                || (!IS_ASCII(string) && !emitter->unicode)) {
-            special_characters = 1;
-        }
-
-        if (IS_BREAK(string)) {
-            line_breaks = 1;
-        }
-
-        if (IS_SPACE(string))
-        {
-            if (string.start == string.pointer) {
-                leading_space = 1;
-            }
-            if (string.pointer+WIDTH(string) == string.end) {
-                trailing_space = 1;
-            }
-            if (previous_break) {
-                break_space = 1;
-            }
-            previous_space = 1;
-            previous_break = 0;
-        }
-        else if (IS_BREAK(string))
-        {
-            if (string.start == string.pointer) {
-                leading_break = 1;
-            }
-            if (string.pointer+WIDTH(string) == string.end) {
-                trailing_break = 1;
-            }
-            if (previous_space) {
-                space_break = 1;
-            }
-            previous_space = 0;
-            previous_break = 1;
-        }
-        else
-        {
-            previous_space = 0;
-            previous_break = 0;
-        }
-
-        preceeded_by_whitespace = IS_BLANKZ(string);
-        MOVE(string);
-        if (string.pointer != string.end) {
-            followed_by_whitespace = IS_BLANKZ_AT(string, WIDTH(string));
-        }
-    }
-
-    emitter->scalar_data.multiline = line_breaks;
-
-    emitter->scalar_data.flow_plain_allowed = 1;
-    emitter->scalar_data.block_plain_allowed = 1;
-    emitter->scalar_data.single_quoted_allowed = 1;
-    emitter->scalar_data.block_allowed = 1;
-
-    if (leading_space || leading_break || trailing_space || trailing_break) {
-        emitter->scalar_data.flow_plain_allowed = 0;
-        emitter->scalar_data.block_plain_allowed = 0;
-    }
-
-    if (trailing_space) {
-        emitter->scalar_data.block_allowed = 0;
-    }
-
-    if (break_space) {
-        emitter->scalar_data.flow_plain_allowed = 0;
-        emitter->scalar_data.block_plain_allowed = 0;
-        emitter->scalar_data.single_quoted_allowed = 0;
-    }
-
-    if (space_break || special_characters) {
-        emitter->scalar_data.flow_plain_allowed = 0;
-        emitter->scalar_data.block_plain_allowed = 0;
-        emitter->scalar_data.single_quoted_allowed = 0;
-        emitter->scalar_data.block_allowed = 0;
-    }
-
-    if (line_breaks) {
-        emitter->scalar_data.flow_plain_allowed = 0;
-        emitter->scalar_data.block_plain_allowed = 0;
-    }
-
-    if (flow_indicators) {
-        emitter->scalar_data.flow_plain_allowed = 0;
-    }
-
-    if (block_indicators) {
-        emitter->scalar_data.block_plain_allowed = 0;
-    }
-
-    return 1;
-}
-
-/*
- * Check if the event data is valid.
- */
-
-static int
-yaml_emitter_analyze_event(yaml_emitter_t *emitter,
-        yaml_event_t *event)
-{
-    emitter->anchor_data.anchor = NULL;
-    emitter->anchor_data.anchor_length = 0;
-    emitter->tag_data.handle = NULL;
-    emitter->tag_data.handle_length = 0;
-    emitter->tag_data.suffix = NULL;
-    emitter->tag_data.suffix_length = 0;
-    emitter->scalar_data.value = NULL;
-    emitter->scalar_data.length = 0;
-
-    switch (event->type)
-    {
-        case YAML_ALIAS_EVENT:
-            if (!yaml_emitter_analyze_anchor(emitter,
-                        event->data.alias.anchor, 1))
-                return 0;
-            return 1;
-
-        case YAML_SCALAR_EVENT:
-            if (event->data.scalar.anchor) {
-                if (!yaml_emitter_analyze_anchor(emitter,
-                            event->data.scalar.anchor, 0))
-                    return 0;
-            }
-            if (event->data.scalar.tag && (emitter->canonical ||
-                        (!event->data.scalar.plain_implicit
-                         && !event->data.scalar.quoted_implicit))) {
-                if (!yaml_emitter_analyze_tag(emitter, event->data.scalar.tag))
-                    return 0;
-            }
-            if (!yaml_emitter_analyze_scalar(emitter,
-                        event->data.scalar.value, event->data.scalar.length))
-                return 0;
-            return 1;
-
-        case YAML_SEQUENCE_START_EVENT:
-            if (event->data.sequence_start.anchor) {
-                if (!yaml_emitter_analyze_anchor(emitter,
-                            event->data.sequence_start.anchor, 0))
-                    return 0;
-            }
-            if (event->data.sequence_start.tag && (emitter->canonical ||
-                        !event->data.sequence_start.implicit)) {
-                if (!yaml_emitter_analyze_tag(emitter,
-                            event->data.sequence_start.tag))
-                    return 0;
-            }
-            return 1;
-
-        case YAML_MAPPING_START_EVENT:
-            if (event->data.mapping_start.anchor) {
-                if (!yaml_emitter_analyze_anchor(emitter,
-                            event->data.mapping_start.anchor, 0))
-                    return 0;
-            }
-            if (event->data.mapping_start.tag && (emitter->canonical ||
-                        !event->data.mapping_start.implicit)) {
-                if (!yaml_emitter_analyze_tag(emitter,
-                            event->data.mapping_start.tag))
-                    return 0;
-            }
-            return 1;
-
-        default:
-            return 1;
-    }
-}
-
-/*
- * Write the BOM character.
- */
-
-static int
-yaml_emitter_write_bom(yaml_emitter_t *emitter)
-{
-    if (!FLUSH(emitter)) return 0;
-
-    *(emitter->buffer.pointer++) = (yaml_char_t) '\xEF';
-    *(emitter->buffer.pointer++) = (yaml_char_t) '\xBB';
-    *(emitter->buffer.pointer++) = (yaml_char_t) '\xBF';
-
-    return 1;
-}
-
-static int
-yaml_emitter_write_indent(yaml_emitter_t *emitter)
-{
-    int indent = (emitter->indent >= 0) ? emitter->indent : 0;
-
-    if (!emitter->indention || emitter->column > indent
-            || (emitter->column == indent && !emitter->whitespace)) {
-        if (!PUT_BREAK(emitter)) return 0;
-    }
-
-    while (emitter->column < indent) {
-        if (!PUT(emitter, ' ')) return 0;
-    }
-
-    emitter->whitespace = 1;
-    emitter->indention = 1;
-
-    return 1;
-}
-
-static int
-yaml_emitter_write_indicator(yaml_emitter_t *emitter,
-        char *indicator, int need_whitespace,
-        int is_whitespace, int is_indention)
-{
-    size_t indicator_length;
-    yaml_string_t string;
-
-    indicator_length = strlen(indicator);
-    STRING_ASSIGN(string, (yaml_char_t *)indicator, indicator_length);
-
-    if (need_whitespace && !emitter->whitespace) {
-        if (!PUT(emitter, ' ')) return 0;
-    }
-
-    while (string.pointer != string.end) {
-        if (!WRITE(emitter, string)) return 0;
-    }
-
-    emitter->whitespace = is_whitespace;
-    emitter->indention = (emitter->indention && is_indention);
-    emitter->open_ended = 0;
-
-    return 1;
-}
-
-static int
-yaml_emitter_write_anchor(yaml_emitter_t *emitter,
-        yaml_char_t *value, size_t length)
-{
-    yaml_string_t string;
-    STRING_ASSIGN(string, value, length);
-
-    while (string.pointer != string.end) {
-        if (!WRITE(emitter, string)) return 0;
-    }
-
-    emitter->whitespace = 0;
-    emitter->indention = 0;
-
-    return 1;
-}
-
-static int
-yaml_emitter_write_tag_handle(yaml_emitter_t *emitter,
-        yaml_char_t *value, size_t length)
-{
-    yaml_string_t string;
-    STRING_ASSIGN(string, value, length);
-
-    if (!emitter->whitespace) {
-        if (!PUT(emitter, ' ')) return 0;
-    }
-
-    while (string.pointer != string.end) {
-        if (!WRITE(emitter, string)) return 0;
-    }
-
-    emitter->whitespace = 0;
-    emitter->indention = 0;
-
-    return 1;
-}
-
-static int
-yaml_emitter_write_tag_content(yaml_emitter_t *emitter,
-        yaml_char_t *value, size_t length,
-        int need_whitespace)
-{
-    yaml_string_t string;
-    STRING_ASSIGN(string, value, length);
-
-    if (need_whitespace && !emitter->whitespace) {
-        if (!PUT(emitter, ' ')) return 0;
-    }
-
-    while (string.pointer != string.end) {
-        if (IS_ALPHA(string)
-                || CHECK(string, ';') || CHECK(string, '/')
-                || CHECK(string, '?') || CHECK(string, ':')
-                || CHECK(string, '@') || CHECK(string, '&')
-                || CHECK(string, '=') || CHECK(string, '+')
-                || CHECK(string, '$') || CHECK(string, ',')
-                || CHECK(string, '_') || CHECK(string, '.')
-                || CHECK(string, '~') || CHECK(string, '*')
-                || CHECK(string, '\'') || CHECK(string, '(')
-                || CHECK(string, ')') || CHECK(string, '[')
-                || CHECK(string, ']')) {
-            if (!WRITE(emitter, string)) return 0;
-        }
-        else {
-            int width = WIDTH(string);
-            unsigned int value;
-            while (width --) {
-                value = *(string.pointer++);
-                if (!PUT(emitter, '%')) return 0;
-                if (!PUT(emitter, (value >> 4)
-                            + ((value >> 4) < 10 ? '0' : 'A' - 10)))
-                    return 0;
-                if (!PUT(emitter, (value & 0x0F)
-                            + ((value & 0x0F) < 10 ? '0' : 'A' - 10)))
-                    return 0;
-            }
-        }
-    }
-
-    emitter->whitespace = 0;
-    emitter->indention = 0;
-
-    return 1;
-}
-
-static int
-yaml_emitter_write_plain_scalar(yaml_emitter_t *emitter,
-        yaml_char_t *value, size_t length, int allow_breaks)
-{
-    yaml_string_t string;
-    int spaces = 0;
-    int breaks = 0;
-
-    STRING_ASSIGN(string, value, length);
-
-    if (!emitter->whitespace) {
-        if (!PUT(emitter, ' ')) return 0;
-    }
-
-    while (string.pointer != string.end)
-    {
-        if (IS_SPACE(string))
-        {
-            if (allow_breaks && !spaces
-                    && emitter->column > emitter->best_width
-                    && !IS_SPACE_AT(string, 1)) {
-                if (!yaml_emitter_write_indent(emitter)) return 0;
-                MOVE(string);
-            }
-            else {
-                if (!WRITE(emitter, string)) return 0;
-            }
-            spaces = 1;
-        }
-        else if (IS_BREAK(string))
-        {
-            if (!breaks && CHECK(string, '\n')) {
-                if (!PUT_BREAK(emitter)) return 0;
-            }
-            if (!WRITE_BREAK(emitter, string)) return 0;
-            emitter->indention = 1;
-            breaks = 1;
-        }
-        else
-        {
-            if (breaks) {
-                if (!yaml_emitter_write_indent(emitter)) return 0;
-            }
-            if (!WRITE(emitter, string)) return 0;
-            emitter->indention = 0;
-            spaces = 0;
-            breaks = 0;
-        }
-    }
-
-    emitter->whitespace = 0;
-    emitter->indention = 0;
-    if (emitter->root_context)
-    {
-        emitter->open_ended = 1;
-    }
-
-    return 1;
-}
-
-static int
-yaml_emitter_write_single_quoted_scalar(yaml_emitter_t *emitter,
-        yaml_char_t *value, size_t length, int allow_breaks)
-{
-    yaml_string_t string;
-    int spaces = 0;
-    int breaks = 0;
-
-    STRING_ASSIGN(string, value, length);
-
-    if (!yaml_emitter_write_indicator(emitter, "'", 1, 0, 0))
-        return 0;
-
-    while (string.pointer != string.end)
-    {
-        if (IS_SPACE(string))
-        {
-            if (allow_breaks && !spaces
-                    && emitter->column > emitter->best_width
-                    && string.pointer != string.start
-                    && string.pointer != string.end - 1
-                    && !IS_SPACE_AT(string, 1)) {
-                if (!yaml_emitter_write_indent(emitter)) return 0;
-                MOVE(string);
-            }
-            else {
-                if (!WRITE(emitter, string)) return 0;
-            }
-            spaces = 1;
-        }
-        else if (IS_BREAK(string))
-        {
-            if (!breaks && CHECK(string, '\n')) {
-                if (!PUT_BREAK(emitter)) return 0;
-            }
-            if (!WRITE_BREAK(emitter, string)) return 0;
-            emitter->indention = 1;
-            breaks = 1;
-        }
-        else
-        {
-            if (breaks) {
-                if (!yaml_emitter_write_indent(emitter)) return 0;
-            }
-            if (CHECK(string, '\'')) {
-                if (!PUT(emitter, '\'')) return 0;
-            }
-            if (!WRITE(emitter, string)) return 0;
-            emitter->indention = 0;
-            spaces = 0;
-            breaks = 0;
-        }
-    }
-
-    if (!yaml_emitter_write_indicator(emitter, "'", 0, 0, 0))
-        return 0;
-
-    emitter->whitespace = 0;
-    emitter->indention = 0;
-
-    return 1;
-}
-
-static int
-yaml_emitter_write_double_quoted_scalar(yaml_emitter_t *emitter,
-        yaml_char_t *value, size_t length, int allow_breaks)
-{
-    yaml_string_t string;
-    int spaces = 0;
-
-    STRING_ASSIGN(string, value, length);
-
-    if (!yaml_emitter_write_indicator(emitter, "\"", 1, 0, 0))
-        return 0;
-
-    while (string.pointer != string.end)
-    {
-        if (!IS_PRINTABLE(string) || (!emitter->unicode && !IS_ASCII(string))
-                || IS_BOM(string) || IS_BREAK(string)
-                || CHECK(string, '"') || CHECK(string, '\\'))
-        {
-            unsigned char octet;
-            unsigned int width;
-            unsigned int value;
-            int k;
-
-            octet = string.pointer[0];
-            width = (octet & 0x80) == 0x00 ? 1 :
-                    (octet & 0xE0) == 0xC0 ? 2 :
-                    (octet & 0xF0) == 0xE0 ? 3 :
-                    (octet & 0xF8) == 0xF0 ? 4 : 0;
-            value = (octet & 0x80) == 0x00 ? octet & 0x7F :
-                    (octet & 0xE0) == 0xC0 ? octet & 0x1F :
-                    (octet & 0xF0) == 0xE0 ? octet & 0x0F :
-                    (octet & 0xF8) == 0xF0 ? octet & 0x07 : 0;
-            for (k = 1; k < (int)width; k ++) {
-                octet = string.pointer[k];
-                value = (value << 6) + (octet & 0x3F);
-            }
-            string.pointer += width;
-
-            if (!PUT(emitter, '\\')) return 0;
-
-            switch (value)
-            {
-                case 0x00:
-                    if (!PUT(emitter, '0')) return 0;
-                    break;
-
-                case 0x07:
-                    if (!PUT(emitter, 'a')) return 0;
-                    break;
-
-                case 0x08:
-                    if (!PUT(emitter, 'b')) return 0;
-                    break;
-
-                case 0x09:
-                    if (!PUT(emitter, 't')) return 0;
-                    break;
-
-                case 0x0A:
-                    if (!PUT(emitter, 'n')) return 0;
-                    break;
-
-                case 0x0B:
-                    if (!PUT(emitter, 'v')) return 0;
-                    break;
-
-                case 0x0C:
-                    if (!PUT(emitter, 'f')) return 0;
-                    break;
-
-                case 0x0D:
-                    if (!PUT(emitter, 'r')) return 0;
-                    break;
-
-                case 0x1B:
-                    if (!PUT(emitter, 'e')) return 0;
-                    break;
-
-                case 0x22:
-                    if (!PUT(emitter, '\"')) return 0;
-                    break;
-
-                case 0x5C:
-                    if (!PUT(emitter, '\\')) return 0;
-                    break;
-
-                case 0x85:
-                    if (!PUT(emitter, 'N')) return 0;
-                    break;
-
-                case 0xA0:
-                    if (!PUT(emitter, '_')) return 0;
-                    break;
-
-                case 0x2028:
-                    if (!PUT(emitter, 'L')) return 0;
-                    break;
-
-                case 0x2029:
-                    if (!PUT(emitter, 'P')) return 0;
-                    break;
-
-                default:
-                    if (value <= 0xFF) {
-                        if (!PUT(emitter, 'x')) return 0;
-                        width = 2;
-                    }
-                    else if (value <= 0xFFFF) {
-                        if (!PUT(emitter, 'u')) return 0;
-                        width = 4;
-                    }
-                    else {
-                        if (!PUT(emitter, 'U')) return 0;
-                        width = 8;
-                    }
-                    for (k = (width-1)*4; k >= 0; k -= 4) {
-                        int digit = (value >> k) & 0x0F;
-                        if (!PUT(emitter, digit + (digit < 10 ? '0' : 'A'-10)))
-                            return 0;
-                    }
-            }
-            spaces = 0;
-        }
-        else if (IS_SPACE(string))
-        {
-            if (allow_breaks && !spaces
-                    && emitter->column > emitter->best_width
-                    && string.pointer != string.start
-                    && string.pointer != string.end - 1) {
-                if (!yaml_emitter_write_indent(emitter)) return 0;
-                if (IS_SPACE_AT(string, 1)) {
-                    if (!PUT(emitter, '\\')) return 0;
-                }
-                MOVE(string);
-            }
-            else {
-                if (!WRITE(emitter, string)) return 0;
-            }
-            spaces = 1;
-        }
-        else
-        {
-            if (!WRITE(emitter, string)) return 0;
-            spaces = 0;
-        }
-    }
-
-    if (!yaml_emitter_write_indicator(emitter, "\"", 0, 0, 0))
-        return 0;
-
-    emitter->whitespace = 0;
-    emitter->indention = 0;
-
-    return 1;
-}
-
-static int
-yaml_emitter_write_block_scalar_hints(yaml_emitter_t *emitter,
-        yaml_string_t string)
-{
-    char indent_hint[2];
-    char *chomp_hint = NULL;
-
-    if (IS_SPACE(string) || IS_BREAK(string))
-    {
-        indent_hint[0] = '0' + (char)emitter->best_indent;
-        indent_hint[1] = '\0';
-        if (!yaml_emitter_write_indicator(emitter, indent_hint, 0, 0, 0))
-            return 0;
-    }
-
-    emitter->open_ended = 0;
-
-    string.pointer = string.end;
-    if (string.start == string.pointer)
-    {
-        chomp_hint = "-";
-    }
-    else
-    {
-        do {
-            string.pointer --;
-        } while ((*string.pointer & 0xC0) == 0x80);
-        if (!IS_BREAK(string))
-        {
-            chomp_hint = "-";
-        }
-        else if (string.start == string.pointer)
-        {
-            chomp_hint = "+";
-            emitter->open_ended = 1;
-        }
-        else
-        {
-            do {
-                string.pointer --;
-            } while ((*string.pointer & 0xC0) == 0x80);
-            if (IS_BREAK(string))
-            {
-                chomp_hint = "+";
-                emitter->open_ended = 1;
-            }
-        }
-    }
-
-    if (chomp_hint)
-    {
-        if (!yaml_emitter_write_indicator(emitter, chomp_hint, 0, 0, 0))
-            return 0;
-    }
-
-    return 1;
-}
-
-static int
-yaml_emitter_write_literal_scalar(yaml_emitter_t *emitter,
-        yaml_char_t *value, size_t length)
-{
-    yaml_string_t string;
-    int breaks = 1;
-
-    STRING_ASSIGN(string, value, length);
-
-    if (!yaml_emitter_write_indicator(emitter, "|", 1, 0, 0))
-        return 0;
-    if (!yaml_emitter_write_block_scalar_hints(emitter, string))
-        return 0;
-    if (!PUT_BREAK(emitter)) return 0;
-    emitter->indention = 1;
-    emitter->whitespace = 1;
-
-    while (string.pointer != string.end)
-    {
-        if (IS_BREAK(string))
-        {
-            if (!WRITE_BREAK(emitter, string)) return 0;
-            emitter->indention = 1;
-            breaks = 1;
-        }
-        else
-        {
-            if (breaks) {
-                if (!yaml_emitter_write_indent(emitter)) return 0;
-            }
-            if (!WRITE(emitter, string)) return 0;
-            emitter->indention = 0;
-            breaks = 0;
-        }
-    }
-
-    return 1;
-}
-
-static int
-yaml_emitter_write_folded_scalar(yaml_emitter_t *emitter,
-        yaml_char_t *value, size_t length)
-{
-    yaml_string_t string;
-    int breaks = 1;
-    int leading_spaces = 1;
-
-    STRING_ASSIGN(string, value, length);
-
-    if (!yaml_emitter_write_indicator(emitter, ">", 1, 0, 0))
-        return 0;
-    if (!yaml_emitter_write_block_scalar_hints(emitter, string))
-        return 0;
-    if (!PUT_BREAK(emitter)) return 0;
-    emitter->indention = 1;
-    emitter->whitespace = 1;
-
-    while (string.pointer != string.end)
-    {
-        if (IS_BREAK(string))
-        {
-            if (!breaks && !leading_spaces && CHECK(string, '\n')) {
-                int k = 0;
-                while (IS_BREAK_AT(string, k)) {
-                    k += WIDTH_AT(string, k);
-                }
-                if (!IS_BLANKZ_AT(string, k)) {
-                    if (!PUT_BREAK(emitter)) return 0;
-                }
-            }
-            if (!WRITE_BREAK(emitter, string)) return 0;
-            emitter->indention = 1;
-            breaks = 1;
-        }
-        else
-        {
-            if (breaks) {
-                if (!yaml_emitter_write_indent(emitter)) return 0;
-                leading_spaces = IS_BLANK(string);
-            }
-            if (!breaks && IS_SPACE(string) && !IS_SPACE_AT(string, 1)
-                    && emitter->column > emitter->best_width) {
-                if (!yaml_emitter_write_indent(emitter)) return 0;
-                MOVE(string);
-            }
-            else {
-                if (!WRITE(emitter, string)) return 0;
-            }
-            emitter->indention = 0;
-            breaks = 0;
-        }
-    }
-
-    return 1;
-}
-
diff --git a/emitterc.go b/emitterc.go
new file mode 100644
index 0000000..ac63f28
--- /dev/null
+++ b/emitterc.go
@@ -0,0 +1,1682 @@
+package goyaml
+
+import (
+	"bytes"
+)
+
+// Flush the buffer if needed.
+func flush(emitter *yaml_emitter_t) bool {
+	if emitter.buffer_pos+5 >= len(emitter.buffer) {
+		return yaml_emitter_flush(emitter)
+	}
+	return true
+}
+
+// Put a character to the output buffer.
+func put(emitter *yaml_emitter_t, value byte) bool {
+	if emitter.buffer_pos+5 >= len(emitter.buffer) && !yaml_emitter_flush(emitter) {
+		return false
+	}
+	emitter.buffer[emitter.buffer_pos] = value
+	emitter.buffer_pos++
+	emitter.column++
+	return true
+}
+
+// Put a line break to the output buffer.
+func put_break(emitter *yaml_emitter_t) bool {
+	if emitter.buffer_pos+5 >= len(emitter.buffer) && !yaml_emitter_flush(emitter) {
+		return false
+	}
+	switch emitter.line_break {
+	case yaml_CR_BREAK:
+		emitter.buffer[emitter.buffer_pos] = '\r'
+		emitter.buffer_pos += 1
+	case yaml_LN_BREAK:
+		emitter.buffer[emitter.buffer_pos] = '\n'
+		emitter.buffer_pos += 1
+	case yaml_CRLN_BREAK:
+		emitter.buffer[emitter.buffer_pos+0] = '\r'
+		emitter.buffer[emitter.buffer_pos+1] = '\n'
+		emitter.buffer_pos += 2
+	default:
+		panic("unknown line break setting")
+	}
+	emitter.column = 0
+	emitter.line++
+	return true
+}
+
+// Copy a character from a string into buffer.
+func write(emitter *yaml_emitter_t, s []byte, i *int) bool {
+	if emitter.buffer_pos+5 >= len(emitter.buffer) && !yaml_emitter_flush(emitter) {
+		return false
+	}
+	p := emitter.buffer_pos
+	w := width(s[*i])
+	switch w {
+	case 4:
+		emitter.buffer[p+3] = s[*i+3]
+		fallthrough
+	case 3:
+		emitter.buffer[p+2] = s[*i+2]
+		fallthrough
+	case 2:
+		emitter.buffer[p+1] = s[*i+1]
+		fallthrough
+	case 1:
+		emitter.buffer[p+0] = s[*i+0]
+	default:
+		panic("unknown character width")
+	}
+	emitter.column++
+	emitter.buffer_pos += w
+	*i += w
+	return true
+}
+
+// Write a whole string into buffer.
+func write_all(emitter *yaml_emitter_t, s []byte) bool {
+	for i := 0; i < len(s); {
+		if !write(emitter, s, &i) {
+			return false
+		}
+	}
+	return true
+}
+
+// Copy a line break character from a string into buffer.
+func write_break(emitter *yaml_emitter_t, s []byte, i *int) bool {
+	if s[*i] == '\n' {
+		if !put_break(emitter) {
+			return false
+		}
+		*i++
+	} else {
+		if !write(emitter, s, i) {
+			return false
+		}
+		emitter.column = 0
+		emitter.line++
+	}
+	return true
+}
+
+// Set an emitter error and return false.
+func yaml_emitter_set_emitter_error(emitter *yaml_emitter_t, problem string) bool {
+	emitter.error = yaml_EMITTER_ERROR
+	emitter.problem = problem
+	return false
+}
+
+// Emit an event.
+func yaml_emitter_emit(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+	emitter.events = append(emitter.events, *event)
+	for !yaml_emitter_need_more_events(emitter) {
+		event := &emitter.events[emitter.events_head]
+		if !yaml_emitter_analyze_event(emitter, event) {
+			return false
+		}
+		if !yaml_emitter_state_machine(emitter, event) {
+			return false
+		}
+		yaml_event_delete(event)
+		emitter.events_head++
+	}
+	return true
+}
+
+// Check if we need to accumulate more events before emitting.
+//
+// We accumulate extra
+//  - 1 event for DOCUMENT-START
+//  - 2 events for SEQUENCE-START
+//  - 3 events for MAPPING-START
+//
+func yaml_emitter_need_more_events(emitter *yaml_emitter_t) bool {
+	if emitter.events_head == len(emitter.events) {
+		return true
+	}
+	var accumulate int
+	switch emitter.events[emitter.events_head].typ {
+	case yaml_DOCUMENT_START_EVENT:
+		accumulate = 1
+		break
+	case yaml_SEQUENCE_START_EVENT:
+		accumulate = 2
+		break
+	case yaml_MAPPING_START_EVENT:
+		accumulate = 3
+		break
+	default:
+		return false
+	}
+	if len(emitter.events)-emitter.events_head > accumulate {
+		return false
+	}
+	var level int
+	for i := emitter.events_head; i < len(emitter.events); i++ {
+		switch emitter.events[i].typ {
+		case yaml_STREAM_START_EVENT, yaml_DOCUMENT_START_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT:
+			level++
+		case yaml_STREAM_END_EVENT, yaml_DOCUMENT_END_EVENT, yaml_SEQUENCE_END_EVENT, yaml_MAPPING_END_EVENT:
+			level--
+		}
+		if level == 0 {
+			return false
+		}
+	}
+	return true
+}
+
+// Append a directive to the directives stack.
+func yaml_emitter_append_tag_directive(emitter *yaml_emitter_t, value *yaml_tag_directive_t, allow_duplicates bool) bool {
+	for i := 0; i < len(emitter.tag_directives); i++ {
+		if bytes.Equal(value.handle, emitter.tag_directives[i].handle) {
+			if allow_duplicates {
+				return true
+			}
+			return yaml_emitter_set_emitter_error(emitter, "duplicate %TAG directive")
+		}
+	}
+
+	// [Go] Do we actually need to copy this given garbage collection
+	// and the lack of deallocating destructors?
+	tag_copy := yaml_tag_directive_t{
+		handle: make([]byte, len(value.handle)),
+		prefix: make([]byte, len(value.prefix)),
+	}
+	copy(tag_copy.handle, value.handle)
+	copy(tag_copy.prefix, value.prefix)
+	emitter.tag_directives = append(emitter.tag_directives, tag_copy)
+	return true
+}
+
+// Increase the indentation level.
+func yaml_emitter_increase_indent(emitter *yaml_emitter_t, flow, indentless bool) bool {
+	emitter.indents = append(emitter.indents, emitter.indent)
+	if emitter.indent < 0 {
+		if flow {
+			emitter.indent = emitter.best_indent
+		} else {
+			emitter.indent = 0
+		}
+	} else if !indentless {
+		emitter.indent += emitter.best_indent
+	}
+	return true
+}
+
+// State dispatcher.
+func yaml_emitter_state_machine(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+	switch emitter.state {
+	default:
+	case yaml_EMIT_STREAM_START_STATE:
+		return yaml_emitter_emit_stream_start(emitter, event)
+
+	case yaml_EMIT_FIRST_DOCUMENT_START_STATE:
+		return yaml_emitter_emit_document_start(emitter, event, true)
+
+	case yaml_EMIT_DOCUMENT_START_STATE:
+		return yaml_emitter_emit_document_start(emitter, event, false)
+
+	case yaml_EMIT_DOCUMENT_CONTENT_STATE:
+		return yaml_emitter_emit_document_content(emitter, event)
+
+	case yaml_EMIT_DOCUMENT_END_STATE:
+		return yaml_emitter_emit_document_end(emitter, event)
+
+	case yaml_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE:
+		return yaml_emitter_emit_flow_sequence_item(emitter, event, true)
+
+	case yaml_EMIT_FLOW_SEQUENCE_ITEM_STATE:
+		return yaml_emitter_emit_flow_sequence_item(emitter, event, false)
+
+	case yaml_EMIT_FLOW_MAPPING_FIRST_KEY_STATE:
+		return yaml_emitter_emit_flow_mapping_key(emitter, event, true)
+
+	case yaml_EMIT_FLOW_MAPPING_KEY_STATE:
+		return yaml_emitter_emit_flow_mapping_key(emitter, event, false)
+
+	case yaml_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE:
+		return yaml_emitter_emit_flow_mapping_value(emitter, event, true)
+
+	case yaml_EMIT_FLOW_MAPPING_VALUE_STATE:
+		return yaml_emitter_emit_flow_mapping_value(emitter, event, false)
+
+	case yaml_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE:
+		return yaml_emitter_emit_block_sequence_item(emitter, event, true)
+
+	case yaml_EMIT_BLOCK_SEQUENCE_ITEM_STATE:
+		return yaml_emitter_emit_block_sequence_item(emitter, event, false)
+
+	case yaml_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE:
+		return yaml_emitter_emit_block_mapping_key(emitter, event, true)
+
+	case yaml_EMIT_BLOCK_MAPPING_KEY_STATE:
+		return yaml_emitter_emit_block_mapping_key(emitter, event, false)
+
+	case yaml_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE:
+		return yaml_emitter_emit_block_mapping_value(emitter, event, true)
+
+	case yaml_EMIT_BLOCK_MAPPING_VALUE_STATE:
+		return yaml_emitter_emit_block_mapping_value(emitter, event, false)
+
+	case yaml_EMIT_END_STATE:
+		return yaml_emitter_set_emitter_error(emitter, "expected nothing after STREAM-END")
+	}
+	panic("invalid emitter state")
+}
+
+// Expect STREAM-START.
+func yaml_emitter_emit_stream_start(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+	if event.typ != yaml_STREAM_START_EVENT {
+		return yaml_emitter_set_emitter_error(emitter, "expected STREAM-START")
+	}
+	if emitter.encoding == yaml_ANY_ENCODING {
+		emitter.encoding = event.encoding
+		if emitter.encoding == yaml_ANY_ENCODING {
+			emitter.encoding = yaml_UTF8_ENCODING
+		}
+	}
+	if emitter.best_indent < 2 || emitter.best_indent > 9 {
+		emitter.best_indent = 2
+	}
+	if emitter.best_width >= 0 && emitter.best_width <= emitter.best_indent*2 {
+		emitter.best_width = 80
+	}
+	if emitter.best_width < 0 {
+		emitter.best_width = 1<<31 - 1
+	}
+	if emitter.line_break == yaml_ANY_BREAK {
+		emitter.line_break = yaml_LN_BREAK
+	}
+
+	emitter.indent = -1
+	emitter.line = 0
+	emitter.column = 0
+	emitter.whitespace = true
+	emitter.indention = true
+
+	if emitter.encoding != yaml_UTF8_ENCODING {
+		if !yaml_emitter_write_bom(emitter) {
+			return false
+		}
+	}
+	emitter.state = yaml_EMIT_FIRST_DOCUMENT_START_STATE
+	return true
+}
+
+// Expect DOCUMENT-START or STREAM-END.
+func yaml_emitter_emit_document_start(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool {
+
+	if event.typ == yaml_DOCUMENT_START_EVENT {
+
+		if event.version_directive != nil {
+			if !yaml_emitter_analyze_version_directive(emitter, event.version_directive) {
+				return false
+			}
+		}
+
+		for i := 0; i < len(event.tag_directives); i++ {
+			tag_directive := &event.tag_directives[i]
+			if !yaml_emitter_analyze_tag_directive(emitter, tag_directive) {
+				return false
+			}
+			if !yaml_emitter_append_tag_directive(emitter, tag_directive, false) {
+				return false
+			}
+		}
+
+		for i := 0; i < len(default_tag_directives); i++ {
+			tag_directive := &default_tag_directives[i]
+			if !yaml_emitter_append_tag_directive(emitter, tag_directive, true) {
+				return false
+			}
+		}
+
+		implicit := event.implicit
+		if !first || emitter.canonical {
+			implicit = false
+		}
+
+		if emitter.open_ended && (event.version_directive != nil || len(event.tag_directives) > 0) {
+			if !yaml_emitter_write_indicator(emitter, []byte("..."), true, false, false) {
+				return false
+			}
+			if !yaml_emitter_write_indent(emitter) {
+				return false
+			}
+		}
+
+		if event.version_directive != nil {
+			implicit = false
+			if !yaml_emitter_write_indicator(emitter, []byte("%YAML"), true, false, false) {
+				return false
+			}
+			if !yaml_emitter_write_indicator(emitter, []byte("1.1"), true, false, false) {
+				return false
+			}
+			if !yaml_emitter_write_indent(emitter) {
+				return false
+			}
+		}
+
+		if len(event.tag_directives) > 0 {
+			implicit = false
+			for i := 0; i < len(event.tag_directives); i++ {
+				tag_directive := &event.tag_directives[i]
+				if !yaml_emitter_write_indicator(emitter, []byte("%TAG"), true, false, false) {
+					return false
+				}
+				if !yaml_emitter_write_tag_handle(emitter, tag_directive.handle) {
+					return false
+				}
+				if !yaml_emitter_write_tag_content(emitter, tag_directive.prefix, true) {
+					return false
+				}
+				if !yaml_emitter_write_indent(emitter) {
+					return false
+				}
+			}
+		}
+
+		if yaml_emitter_check_empty_document(emitter) {
+			implicit = false
+		}
+		if !implicit {
+			if !yaml_emitter_write_indent(emitter) {
+				return false
+			}
+			if !yaml_emitter_write_indicator(emitter, []byte("---"), true, false, false) {
+				return false
+			}
+			if emitter.canonical {
+				if !yaml_emitter_write_indent(emitter) {
+					return false
+				}
+			}
+		}
+
+		emitter.state = yaml_EMIT_DOCUMENT_CONTENT_STATE
+		return true
+	}
+
+	if event.typ == yaml_STREAM_END_EVENT {
+		if emitter.open_ended {
+			if !yaml_emitter_write_indicator(emitter, []byte("..."), true, false, false) {
+				return false
+			}
+			if !yaml_emitter_write_indent(emitter) {
+				return false
+			}
+		}
+		if !yaml_emitter_flush(emitter) {
+			return false
+		}
+		emitter.state = yaml_EMIT_END_STATE
+		return true
+	}
+
+	return yaml_emitter_set_emitter_error(emitter, "expected DOCUMENT-START or STREAM-END")
+}
+
+// Expect the root node.
+func yaml_emitter_emit_document_content(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+	emitter.states = append(emitter.states, yaml_EMIT_DOCUMENT_END_STATE)
+	return yaml_emitter_emit_node(emitter, event, true, false, false, false)
+}
+
+// Expect DOCUMENT-END.
+func yaml_emitter_emit_document_end(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+	if event.typ != yaml_DOCUMENT_END_EVENT {
+		return yaml_emitter_set_emitter_error(emitter, "expected DOCUMENT-END")
+	}
+	if !yaml_emitter_write_indent(emitter) {
+		return false
+	}
+	if !event.implicit {
+		// [Go] Allocate the slice elsewhere.
+		if !yaml_emitter_write_indicator(emitter, []byte("..."), true, false, false) {
+			return false
+		}
+		if !yaml_emitter_write_indent(emitter) {
+			return false
+		}
+	}
+	if !yaml_emitter_flush(emitter) {
+		return false
+	}
+	emitter.state = yaml_EMIT_DOCUMENT_START_STATE
+	emitter.tag_directives = emitter.tag_directives[:0]
+	return true
+}
+
+// Expect a flow item node.
+func yaml_emitter_emit_flow_sequence_item(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool {
+	if first {
+		if !yaml_emitter_write_indicator(emitter, []byte{'['}, true, true, false) {
+			return false
+		}
+		if !yaml_emitter_increase_indent(emitter, true, false) {
+			return false
+		}
+		emitter.flow_level++
+	}
+
+	if event.typ == yaml_SEQUENCE_END_EVENT {
+		emitter.flow_level--
+		emitter.indent = emitter.indents[len(emitter.indents)-1]
+		emitter.indents = emitter.indents[:len(emitter.indents)-1]
+		if emitter.canonical && !first {
+			if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) {
+				return false
+			}
+			if !yaml_emitter_write_indent(emitter) {
+				return false
+			}
+		}
+		if !yaml_emitter_write_indicator(emitter, []byte{']'}, false, false, false) {
+			return false
+		}
+		emitter.state = emitter.states[len(emitter.states)-1]
+		emitter.states = emitter.states[:len(emitter.states)-1]
+
+		return true
+	}
+
+	if !first {
+		if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) {
+			return false
+		}
+	}
+
+	if emitter.canonical || emitter.column > emitter.best_width {
+		if !yaml_emitter_write_indent(emitter) {
+			return false
+		}
+	}
+	emitter.states = append(emitter.states, yaml_EMIT_FLOW_SEQUENCE_ITEM_STATE)
+	return yaml_emitter_emit_node(emitter, event, false, true, false, false)
+}
+
+// Expect a flow key node.
+func yaml_emitter_emit_flow_mapping_key(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool {
+	if first {
+		if !yaml_emitter_write_indicator(emitter, []byte{'{'}, true, true, false) {
+			return false
+		}
+		if !yaml_emitter_increase_indent(emitter, true, false) {
+			return false
+		}
+		emitter.flow_level++
+	}
+
+	if event.typ == yaml_MAPPING_END_EVENT {
+		emitter.flow_level--
+		emitter.indent = emitter.indents[len(emitter.indents)-1]
+		emitter.indents = emitter.indents[:len(emitter.indents)-1]
+		if emitter.canonical && !first {
+			if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) {
+				return false
+			}
+			if !yaml_emitter_write_indent(emitter) {
+				return false
+			}
+		}
+		if !yaml_emitter_write_indicator(emitter, []byte{'}'}, false, false, false) {
+			return false
+		}
+		emitter.state = emitter.states[len(emitter.states)-1]
+		emitter.states = emitter.states[:len(emitter.states)-1]
+		return true
+	}
+
+	if !first {
+		if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) {
+			return false
+		}
+	}
+	if emitter.canonical || emitter.column > emitter.best_width {
+		if !yaml_emitter_write_indent(emitter) {
+			return false
+		}
+	}
+
+	if !emitter.canonical && yaml_emitter_check_simple_key(emitter) {
+		emitter.states = append(emitter.states, yaml_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE)
+		return yaml_emitter_emit_node(emitter, event, false, false, true, true)
+	}
+	if !yaml_emitter_write_indicator(emitter, []byte{'?'}, true, false, false) {
+		return false
+	}
+	emitter.states = append(emitter.states, yaml_EMIT_FLOW_MAPPING_VALUE_STATE)
+	return yaml_emitter_emit_node(emitter, event, false, false, true, false)
+}
+
+// Expect a flow value node.
+func yaml_emitter_emit_flow_mapping_value(emitter *yaml_emitter_t, event *yaml_event_t, simple bool) bool {
+	if simple {
+		if !yaml_emitter_write_indicator(emitter, []byte{':'}, false, false, false) {
+			return false
+		}
+	} else {
+		if emitter.canonical || emitter.column > emitter.best_width {
+			if !yaml_emitter_write_indent(emitter) {
+				return false
+			}
+		}
+		if !yaml_emitter_write_indicator(emitter, []byte{':'}, true, false, false) {
+			return false
+		}
+	}
+	emitter.states = append(emitter.states, yaml_EMIT_FLOW_MAPPING_KEY_STATE)
+	return yaml_emitter_emit_node(emitter, event, false, false, true, false)
+}
+
+// Expect a block item node.
+func yaml_emitter_emit_block_sequence_item(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool {
+	if first {
+		if !yaml_emitter_increase_indent(emitter, false, emitter.mapping_context && !emitter.indention) {
+			return false
+		}
+	}
+	if event.typ == yaml_SEQUENCE_END_EVENT {
+		emitter.indent = emitter.indents[len(emitter.indents)-1]
+		emitter.indents = emitter.indents[:len(emitter.indents)-1]
+		emitter.state = emitter.states[len(emitter.states)-1]
+		emitter.states = emitter.states[:len(emitter.states)-1]
+		return true
+	}
+	if !yaml_emitter_write_indent(emitter) {
+		return false
+	}
+	if !yaml_emitter_write_indicator(emitter, []byte{'-'}, true, false, true) {
+		return false
+	}
+	emitter.states = append(emitter.states, yaml_EMIT_BLOCK_SEQUENCE_ITEM_STATE)
+	return yaml_emitter_emit_node(emitter, event, false, true, false, false)
+}
+
+// Expect a block key node.
+func yaml_emitter_emit_block_mapping_key(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool {
+	if first {
+		if !yaml_emitter_increase_indent(emitter, false, false) {
+			return false
+		}
+	}
+	if event.typ == yaml_MAPPING_END_EVENT {
+		emitter.indent = emitter.indents[len(emitter.indents)-1]
+		emitter.indents = emitter.indents[:len(emitter.indents)-1]
+		emitter.state = emitter.states[len(emitter.states)-1]
+		emitter.states = emitter.states[:len(emitter.states)-1]
+		return true
+	}
+	if !yaml_emitter_write_indent(emitter) {
+		return false
+	}
+	if yaml_emitter_check_simple_key(emitter) {
+		emitter.states = append(emitter.states, yaml_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE)
+		return yaml_emitter_emit_node(emitter, event, false, false, true, true)
+	}
+	if !yaml_emitter_write_indicator(emitter, []byte{'?'}, true, false, true) {
+		return false
+	}
+	emitter.states = append(emitter.states, yaml_EMIT_BLOCK_MAPPING_VALUE_STATE)
+	return yaml_emitter_emit_node(emitter, event, false, false, true, false)
+}
+
+// Expect a block value node.
+func yaml_emitter_emit_block_mapping_value(emitter *yaml_emitter_t, event *yaml_event_t, simple bool) bool {
+	if simple {
+		if !yaml_emitter_write_indicator(emitter, []byte{':'}, false, false, false) {
+			return false
+		}
+	} else {
+		if !yaml_emitter_write_indent(emitter) {
+			return false
+		}
+		if !yaml_emitter_write_indicator(emitter, []byte{':'}, true, false, true) {
+			return false
+		}
+	}
+	emitter.states = append(emitter.states, yaml_EMIT_BLOCK_MAPPING_KEY_STATE)
+	return yaml_emitter_emit_node(emitter, event, false, false, true, false)
+}
+
+// Expect a node.
+func yaml_emitter_emit_node(emitter *yaml_emitter_t, event *yaml_event_t,
+	root bool, sequence bool, mapping bool, simple_key bool) bool {
+
+	emitter.root_context = root
+	emitter.sequence_context = sequence
+	emitter.mapping_context = mapping
+	emitter.simple_key_context = simple_key
+
+	switch event.typ {
+	case yaml_ALIAS_EVENT:
+		return yaml_emitter_emit_alias(emitter, event)
+	case yaml_SCALAR_EVENT:
+		return yaml_emitter_emit_scalar(emitter, event)
+	case yaml_SEQUENCE_START_EVENT:
+		return yaml_emitter_emit_sequence_start(emitter, event)
+	case yaml_MAPPING_START_EVENT:
+		return yaml_emitter_emit_mapping_start(emitter, event)
+	default:
+		return yaml_emitter_set_emitter_error(emitter,
+			"expected SCALAR, SEQUENCE-START, MAPPING-START, or ALIAS")
+	}
+	return false
+}
+
+// Expect ALIAS.
+func yaml_emitter_emit_alias(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+	if !yaml_emitter_process_anchor(emitter) {
+		return false
+	}
+	emitter.state = emitter.states[len(emitter.states)-1]
+	emitter.states = emitter.states[:len(emitter.states)-1]
+	return true
+}
+
+// Expect SCALAR.
+func yaml_emitter_emit_scalar(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+	if !yaml_emitter_select_scalar_style(emitter, event) {
+		return false
+	}
+	if !yaml_emitter_process_anchor(emitter) {
+		return false
+	}
+	if !yaml_emitter_process_tag(emitter) {
+		return false
+	}
+	if !yaml_emitter_increase_indent(emitter, true, false) {
+		return false
+	}
+	if !yaml_emitter_process_scalar(emitter) {
+		return false
+	}
+	emitter.indent = emitter.indents[len(emitter.indents)-1]
+	emitter.indents = emitter.indents[:len(emitter.indents)-1]
+	emitter.state = emitter.states[len(emitter.states)-1]
+	emitter.states = emitter.states[:len(emitter.states)-1]
+	return true
+}
+
+// Expect SEQUENCE-START.
+func yaml_emitter_emit_sequence_start(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+	if !yaml_emitter_process_anchor(emitter) {
+		return false
+	}
+	if !yaml_emitter_process_tag(emitter) {
+		return false
+	}
+	if emitter.flow_level > 0 || emitter.canonical || event.sequence_style() == yaml_FLOW_SEQUENCE_STYLE ||
+		yaml_emitter_check_empty_sequence(emitter) {
+		emitter.state = yaml_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE
+	} else {
+		emitter.state = yaml_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE
+	}
+	return true
+}
+
+// Expect MAPPING-START.
+func yaml_emitter_emit_mapping_start(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+	if !yaml_emitter_process_anchor(emitter) {
+		return false
+	}
+	if !yaml_emitter_process_tag(emitter) {
+		return false
+	}
+	if emitter.flow_level > 0 || emitter.canonical || event.mapping_style() == yaml_FLOW_MAPPING_STYLE ||
+		yaml_emitter_check_empty_mapping(emitter) {
+		emitter.state = yaml_EMIT_FLOW_MAPPING_FIRST_KEY_STATE
+	} else {
+		emitter.state = yaml_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE
+	}
+	return true
+}
+
+// Check if the document content is an empty scalar.
+func yaml_emitter_check_empty_document(emitter *yaml_emitter_t) bool {
+	return false // [Go] Huh?
+}
+
+// Check if the next events represent an empty sequence.
+func yaml_emitter_check_empty_sequence(emitter *yaml_emitter_t) bool {
+	if len(emitter.events)-emitter.events_head < 2 {
+		return false
+	}
+	return emitter.events[emitter.events_head].typ == yaml_SEQUENCE_START_EVENT &&
+		emitter.events[emitter.events_head+1].typ == yaml_SEQUENCE_END_EVENT
+}
+
+// Check if the next events represent an empty mapping.
+func yaml_emitter_check_empty_mapping(emitter *yaml_emitter_t) bool {
+	if len(emitter.events)-emitter.events_head < 2 {
+		return false
+	}
+	return emitter.events[emitter.events_head].typ == yaml_MAPPING_START_EVENT &&
+		emitter.events[emitter.events_head+1].typ == yaml_MAPPING_END_EVENT
+}
+
+// Check if the next node can be expressed as a simple key.
+func yaml_emitter_check_simple_key(emitter *yaml_emitter_t) bool {
+	length := 0
+	switch emitter.events[emitter.events_head].typ {
+	case yaml_ALIAS_EVENT:
+		length += len(emitter.anchor_data.anchor)
+	case yaml_SCALAR_EVENT:
+		if emitter.scalar_data.multiline {
+			return false
+		}
+		length += len(emitter.anchor_data.anchor) +
+			len(emitter.tag_data.handle) +
+			len(emitter.tag_data.suffix) +
+			len(emitter.scalar_data.value)
+	case yaml_SEQUENCE_START_EVENT:
+		if !yaml_emitter_check_empty_sequence(emitter) {
+			return false
+		}
+		length += len(emitter.anchor_data.anchor) +
+			len(emitter.tag_data.handle) +
+			len(emitter.tag_data.suffix)
+	case yaml_MAPPING_START_EVENT:
+		if !yaml_emitter_check_empty_mapping(emitter) {
+			return false
+		}
+		length += len(emitter.anchor_data.anchor) +
+			len(emitter.tag_data.handle) +
+			len(emitter.tag_data.suffix)
+	default:
+		return false
+	}
+	return length <= 128
+}
+
+// Determine an acceptable scalar style.
+func yaml_emitter_select_scalar_style(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+
+	no_tag := len(emitter.tag_data.handle) == 0 && len(emitter.tag_data.suffix) == 0
+	if no_tag && !event.implicit && !event.quoted_implicit {
+		return yaml_emitter_set_emitter_error(emitter, "neither tag nor implicit flags are specified")
+	}
+
+	style := event.scalar_style()
+	if style == yaml_ANY_SCALAR_STYLE {
+		style = yaml_PLAIN_SCALAR_STYLE
+	}
+	if emitter.canonical {
+		style = yaml_DOUBLE_QUOTED_SCALAR_STYLE
+	}
+	if emitter.simple_key_context && emitter.scalar_data.multiline {
+		style = yaml_DOUBLE_QUOTED_SCALAR_STYLE
+	}
+
+	if style == yaml_PLAIN_SCALAR_STYLE {
+		if emitter.flow_level > 0 && !emitter.scalar_data.flow_plain_allowed ||
+			emitter.flow_level == 0 && !emitter.scalar_data.block_plain_allowed {
+			style = yaml_SINGLE_QUOTED_SCALAR_STYLE
+		}
+		if len(emitter.scalar_data.value) == 0 && (emitter.flow_level > 0 || emitter.simple_key_context) {
+			style = yaml_SINGLE_QUOTED_SCALAR_STYLE
+		}
+		if no_tag && !event.implicit {
+			style = yaml_SINGLE_QUOTED_SCALAR_STYLE
+		}
+	}
+	if style == yaml_SINGLE_QUOTED_SCALAR_STYLE {
+		if !emitter.scalar_data.single_quoted_allowed {
+			style = yaml_DOUBLE_QUOTED_SCALAR_STYLE
+		}
+	}
+	if style == yaml_LITERAL_SCALAR_STYLE || style == yaml_FOLDED_SCALAR_STYLE {
+		if !emitter.scalar_data.block_allowed || emitter.flow_level > 0 || emitter.simple_key_context {
+			style = yaml_DOUBLE_QUOTED_SCALAR_STYLE
+		}
+	}
+
+	if no_tag && !event.quoted_implicit && style != yaml_PLAIN_SCALAR_STYLE {
+		emitter.tag_data.handle = []byte{'!'}
+	}
+	emitter.scalar_data.style = style
+	return true
+}
+
+// Write an achor.
+func yaml_emitter_process_anchor(emitter *yaml_emitter_t) bool {
+	if emitter.anchor_data.anchor == nil {
+		return true
+	}
+	c := []byte{'&'}
+	if emitter.anchor_data.alias {
+		c[0] = '*'
+	}
+	if !yaml_emitter_write_indicator(emitter, c, true, false, false) {
+		return false
+	}
+	return yaml_emitter_write_anchor(emitter, emitter.anchor_data.anchor)
+}
+
+// Write a tag.
+func yaml_emitter_process_tag(emitter *yaml_emitter_t) bool {
+	if len(emitter.tag_data.handle) == 0 && len(emitter.tag_data.suffix) == 0 {
+		return true
+	}
+	if len(emitter.tag_data.handle) > 0 {
+		if !yaml_emitter_write_tag_handle(emitter, emitter.tag_data.handle) {
+			return false
+		}
+		if len(emitter.tag_data.suffix) > 0 {
+			if !yaml_emitter_write_tag_content(emitter, emitter.tag_data.suffix, false) {
+				return false
+			}
+		}
+	} else {
+		// [Go] Allocate these slices elsewhere.
+		if !yaml_emitter_write_indicator(emitter, []byte("!<"), true, false, false) {
+			return false
+		}
+		if !yaml_emitter_write_tag_content(emitter, emitter.tag_data.suffix, false) {
+			return false
+		}
+		if !yaml_emitter_write_indicator(emitter, []byte{'>'}, false, false, false) {
+			return false
+		}
+	}
+	return true
+}
+
+// Write a scalar.
+func yaml_emitter_process_scalar(emitter *yaml_emitter_t) bool {
+	switch emitter.scalar_data.style {
+	case yaml_PLAIN_SCALAR_STYLE:
+		return yaml_emitter_write_plain_scalar(emitter, emitter.scalar_data.value, !emitter.simple_key_context)
+
+	case yaml_SINGLE_QUOTED_SCALAR_STYLE:
+		return yaml_emitter_write_single_quoted_scalar(emitter, emitter.scalar_data.value, !emitter.simple_key_context)
+
+	case yaml_DOUBLE_QUOTED_SCALAR_STYLE:
+		return yaml_emitter_write_double_quoted_scalar(emitter, emitter.scalar_data.value, !emitter.simple_key_context)
+
+	case yaml_LITERAL_SCALAR_STYLE:
+		return yaml_emitter_write_literal_scalar(emitter, emitter.scalar_data.value)
+
+	case yaml_FOLDED_SCALAR_STYLE:
+		return yaml_emitter_write_folded_scalar(emitter, emitter.scalar_data.value)
+	}
+	panic("unknown scalar style")
+}
+
+// Check if a %YAML directive is valid.
+func yaml_emitter_analyze_version_directive(emitter *yaml_emitter_t, version_directive *yaml_version_directive_t) bool {
+	if version_directive.major != 1 || version_directive.minor != 1 {
+		return yaml_emitter_set_emitter_error(emitter, "incompatible %YAML directive")
+	}
+	return true
+}
+
+// Check if a %TAG directive is valid.
+func yaml_emitter_analyze_tag_directive(emitter *yaml_emitter_t, tag_directive *yaml_tag_directive_t) bool {
+	handle := tag_directive.handle
+	prefix := tag_directive.prefix
+	if len(handle) == 0 {
+		return yaml_emitter_set_emitter_error(emitter, "tag handle must not be empty")
+	}
+	if handle[0] != '!' {
+		return yaml_emitter_set_emitter_error(emitter, "tag handle must start with '!'")
+	}
+	if handle[len(handle)-1] != '!' {
+		return yaml_emitter_set_emitter_error(emitter, "tag handle must end with '!'")
+	}
+	for i := 1; i < len(handle)-1; i += width(handle[i]) {
+		if !is_alpha(handle, i) {
+			return yaml_emitter_set_emitter_error(emitter, "tag handle must contain alphanumerical characters only")
+		}
+	}
+	if len(prefix) == 0 {
+		return yaml_emitter_set_emitter_error(emitter, "tag prefix must not be empty")
+	}
+	return true
+}
+
+// Check if an anchor is valid.
+func yaml_emitter_analyze_anchor(emitter *yaml_emitter_t, anchor []byte, alias bool) bool {
+	if len(anchor) == 0 {
+		problem := "anchor value must not be empty"
+		if alias {
+			problem = "alias value must not be empty"
+		}
+		return yaml_emitter_set_emitter_error(emitter, problem)
+	}
+	for i := 0; i < len(anchor); i += width(anchor[i]) {
+		if !is_alpha(anchor, i) {
+			problem := "anchor value must contain alphanumerical characters only"
+			if alias {
+				problem = "alias value must contain alphanumerical characters only"
+			}
+			return yaml_emitter_set_emitter_error(emitter, problem)
+		}
+	}
+	emitter.anchor_data.anchor = anchor
+	emitter.anchor_data.alias = alias
+	return true
+}
+
+// Check if a tag is valid.
+func yaml_emitter_analyze_tag(emitter *yaml_emitter_t, tag []byte) bool {
+	if len(tag) == 0 {
+		return yaml_emitter_set_emitter_error(emitter, "tag value must not be empty")
+	}
+	for i := 0; i < len(emitter.tag_directives); i++ {
+		tag_directive := &emitter.tag_directives[i]
+		if bytes.HasPrefix(tag, tag_directive.prefix) {
+			emitter.tag_data.handle = tag_directive.handle
+			emitter.tag_data.suffix = tag[len(tag_directive.prefix):]
+		}
+		return true
+	}
+	emitter.tag_data.suffix = tag
+	return true
+}
+
+// Check if a scalar is valid.
+func yaml_emitter_analyze_scalar(emitter *yaml_emitter_t, value []byte) bool {
+	var (
+		block_indicators   = false
+		flow_indicators    = false
+		line_breaks        = false
+		special_characters = false
+
+		leading_space  = false
+		leading_break  = false
+		trailing_space = false
+		trailing_break = false
+		break_space    = false
+		space_break    = false
+
+		preceeded_by_whitespace = false
+		followed_by_whitespace  = false
+		previous_space          = false
+		previous_break          = false
+	)
+
+	emitter.scalar_data.value = value
+
+	if len(value) == 0 {
+		emitter.scalar_data.multiline = false
+		emitter.scalar_data.flow_plain_allowed = false
+		emitter.scalar_data.block_plain_allowed = true
+		emitter.scalar_data.single_quoted_allowed = true
+		emitter.scalar_data.block_allowed = false
+		return true
+	}
+
+	if (value[0] == '-' && value[1] == '-' && value[2] == '-') || (value[0] == '.' && value[1] == '.' && value[2] == '.') {
+		block_indicators = true
+		flow_indicators = true
+	}
+
+	preceeded_by_whitespace = true
+	for i, w := 0, 0; i < len(value); i += w {
+		w = width(value[0])
+		followed_by_whitespace = i+w >= len(value) || is_blank(value, i+w)
+
+		if i == 0 {
+			switch value[i] {
+			case '#', ',', '[', ']', '{', '}', '&', '*', '!', '|', '>', '\'', '"', '%', '@', '`':
+				flow_indicators = true
+				block_indicators = true
+			case '?', ':':
+				flow_indicators = true
+				if followed_by_whitespace {
+					block_indicators = true
+				}
+			case '-':
+				if followed_by_whitespace {
+					flow_indicators = true
+					block_indicators = true
+				}
+			}
+		} else {
+			switch value[i] {
+			case ',', '?', '[', ']', '{', '}':
+				flow_indicators = true
+			case ':':
+				flow_indicators = true
+				if followed_by_whitespace {
+					block_indicators = true
+				}
+			case '#':
+				if preceeded_by_whitespace {
+					flow_indicators = true
+					block_indicators = true
+				}
+			}
+		}
+
+		if !is_printable(value, i) || !is_ascii(value, i) && !emitter.unicode {
+			special_characters = true
+		}
+		if is_space(value, i) {
+			if i == 0 {
+				leading_space = true
+			}
+			if i+width(value[i]) == len(value) {
+				trailing_space = true
+			}
+			if previous_break {
+				break_space = true
+			}
+			previous_space = true
+			previous_break = false
+		} else if is_break(value, i) {
+			line_breaks = true
+			if i == 0 {
+				leading_break = true
+			}
+			if i+width(value[i]) == len(value) {
+				trailing_break = true
+			}
+			if previous_space {
+				space_break = true
+			}
+			previous_space = false
+			previous_break = true
+		} else {
+			previous_space = false
+			previous_break = false
+		}
+
+		// [Go]: Why 'z'? Couldn't be the end of the string as that's the loop condition.
+		preceeded_by_whitespace = is_blankz(value, i)
+	}
+
+	emitter.scalar_data.multiline = line_breaks
+	emitter.scalar_data.flow_plain_allowed = true
+	emitter.scalar_data.block_plain_allowed = true
+	emitter.scalar_data.single_quoted_allowed = true
+	emitter.scalar_data.block_allowed = true
+
+	if leading_space || leading_break || trailing_space || trailing_break {
+		emitter.scalar_data.flow_plain_allowed = false
+		emitter.scalar_data.block_plain_allowed = false
+	}
+	if trailing_space {
+		emitter.scalar_data.block_allowed = false
+	}
+	if break_space {
+		emitter.scalar_data.flow_plain_allowed = false
+		emitter.scalar_data.block_plain_allowed = false
+		emitter.scalar_data.single_quoted_allowed = false
+	}
+	if space_break || special_characters {
+		emitter.scalar_data.flow_plain_allowed = false
+		emitter.scalar_data.block_plain_allowed = false
+		emitter.scalar_data.single_quoted_allowed = false
+		emitter.scalar_data.block_allowed = false
+	}
+	if line_breaks {
+		emitter.scalar_data.flow_plain_allowed = false
+		emitter.scalar_data.block_plain_allowed = false
+	}
+	if flow_indicators {
+		emitter.scalar_data.flow_plain_allowed = false
+	}
+	if block_indicators {
+		emitter.scalar_data.block_plain_allowed = false
+	}
+	return true
+}
+
+// Check if the event data is valid.
+func yaml_emitter_analyze_event(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+
+	emitter.anchor_data.anchor = nil
+	emitter.tag_data.handle = nil
+	emitter.tag_data.suffix = nil
+	emitter.scalar_data.value = nil
+
+	switch event.typ {
+	case yaml_ALIAS_EVENT:
+		if !yaml_emitter_analyze_anchor(emitter, event.anchor, true) {
+			return false
+		}
+
+	case yaml_SCALAR_EVENT:
+		if len(event.anchor) > 0 {
+			if !yaml_emitter_analyze_anchor(emitter, event.anchor, false) {
+				return false
+			}
+		}
+		if len(event.tag) > 0 && (emitter.canonical || (!event.implicit && !event.quoted_implicit)) {
+			if !yaml_emitter_analyze_tag(emitter, event.tag) {
+				return false
+			}
+		}
+		if !yaml_emitter_analyze_scalar(emitter, event.value) {
+			return false
+		}
+
+	case yaml_SEQUENCE_START_EVENT:
+		if len(event.anchor) > 0 {
+			if !yaml_emitter_analyze_anchor(emitter, event.anchor, false) {
+				return false
+			}
+		}
+		if len(event.tag) > 0 && (emitter.canonical || !event.implicit) {
+			if !yaml_emitter_analyze_tag(emitter, event.tag) {
+				return false
+			}
+		}
+
+	case yaml_MAPPING_START_EVENT:
+		if len(event.anchor) > 0 {
+			if !yaml_emitter_analyze_anchor(emitter, event.anchor, false) {
+				return false
+			}
+		}
+		if len(event.tag) > 0 && (emitter.canonical || !event.implicit) {
+			if !yaml_emitter_analyze_tag(emitter, event.tag) {
+				return false
+			}
+		}
+	}
+	return true
+}
+
+// Write the BOM character.
+func yaml_emitter_write_bom(emitter *yaml_emitter_t) bool {
+	if !flush(emitter) {
+		return false
+	}
+	pos := emitter.buffer_pos
+	emitter.buffer[pos+0] = '\xEF'
+	emitter.buffer[pos+1] = '\xBB'
+	emitter.buffer[pos+2] = '\xBF'
+	emitter.buffer_pos += 3
+	return true
+}
+
+func yaml_emitter_write_indent(emitter *yaml_emitter_t) bool {
+	indent := emitter.indent
+	if indent < 0 {
+		indent = 0
+	}
+	if !emitter.indention || emitter.column > indent || (emitter.column == indent && !emitter.whitespace) {
+		if !put_break(emitter) {
+			return false
+		}
+	}
+	for emitter.column < indent {
+		if !put(emitter, ' ') {
+			return false
+		}
+	}
+	emitter.whitespace = true
+	emitter.indention = true
+	return true
+}
+
+func yaml_emitter_write_indicator(emitter *yaml_emitter_t, indicator []byte, need_whitespace, is_whitespace, is_indention bool) bool {
+	if need_whitespace && !emitter.whitespace {
+		if !put(emitter, ' ') {
+			return false
+		}
+	}
+	if !write_all(emitter, indicator) {
+		return false
+	}
+	emitter.whitespace = is_whitespace
+	emitter.indention = (emitter.indention && is_indention)
+	emitter.open_ended = false
+	return true
+}
+
+func yaml_emitter_write_anchor(emitter *yaml_emitter_t, value []byte) bool {
+	if !write_all(emitter, value) {
+		return false
+	}
+	emitter.whitespace = false
+	emitter.indention = false
+	return true
+}
+
+func yaml_emitter_write_tag_handle(emitter *yaml_emitter_t, value []byte) bool {
+	if !emitter.whitespace {
+		if !put(emitter, ' ') {
+			return false
+		}
+	}
+	if !write_all(emitter, value) {
+		return false
+	}
+	emitter.whitespace = false
+	emitter.indention = false
+	return true
+}
+
+func yaml_emitter_write_tag_content(emitter *yaml_emitter_t, value []byte, need_whitespace bool) bool {
+	if need_whitespace && !emitter.whitespace {
+		if !put(emitter, ' ') {
+			return false
+		}
+	}
+	for i := 0; i < len(value); {
+		var must_write bool
+		switch value[i] {
+		case ';', '/', '?', ':', '@', '&', '=', '+', '$', ',', '_', '.', '~', '*', '\'', '(', ')', '[', ']':
+			must_write = true
+		default:
+			must_write = is_alpha(value, i)
+		}
+		if must_write {
+			if !write(emitter, value, &i) {
+				return false
+			}
+		} else {
+			w := width(value[i])
+			for k := 0; k < w; k++ {
+				octet := value[i]
+				i++
+
+				c := octet >> 4
+				if c < 10 {
+					c += '0'
+				} else {
+					c += 'A' - 10
+				}
+				if !put(emitter, c) {
+					return false
+				}
+
+				c = octet & 0x0f
+				if c < 10 {
+					c += '0'
+				} else {
+					c += 'A' - 10
+				}
+				if !put(emitter, c) {
+					return false
+				}
+			}
+		}
+	}
+	emitter.whitespace = false
+	emitter.indention = false
+	return true
+}
+
+func yaml_emitter_write_plain_scalar(emitter *yaml_emitter_t, value []byte, allow_breaks bool) bool {
+	if !emitter.whitespace {
+		if !put(emitter, ' ') {
+			return false
+		}
+	}
+
+	spaces := false
+	breaks := false
+	for i := 0; i < len(value); {
+		if is_space(value, i) {
+			if allow_breaks && !spaces && emitter.column > emitter.best_width && !is_space(value, i+1) {
+				if !yaml_emitter_write_indent(emitter) {
+					return false
+				}
+				i += width(value[i])
+			} else {
+				if !write(emitter, value, &i) {
+					return false
+				}
+			}
+			spaces = true
+		} else if is_break(value, i) {
+			if !breaks && value[i] == '\n' {
+				if !put_break(emitter) {
+					return false
+				}
+			}
+			if !write_break(emitter, value, &i) {
+				return false
+			}
+			emitter.indention = true
+			breaks = true
+		} else {
+			if breaks {
+				if !yaml_emitter_write_indent(emitter) {
+					return false
+				}
+			}
+			if !write(emitter, value, &i) {
+				return false
+			}
+			emitter.indention = false
+			spaces = false
+			breaks = false
+		}
+	}
+
+	emitter.whitespace = false
+	emitter.indention = false
+	if emitter.root_context {
+		emitter.open_ended = true
+	}
+
+	return true
+}
+
+func yaml_emitter_write_single_quoted_scalar(emitter *yaml_emitter_t, value []byte, allow_breaks bool) bool {
+
+	if !yaml_emitter_write_indicator(emitter, []byte{'\''}, true, false, false) {
+		return false
+	}
+
+	spaces := false
+	breaks := false
+	for i := 0; i < len(value); {
+		if is_space(value, i) {
+			if allow_breaks && !spaces && emitter.column > emitter.best_width && i > 0 && i < len(value)-1 && !is_space(value, i+1) {
+				if !yaml_emitter_write_indent(emitter) {
+					return false
+				}
+				i += width(value[i])
+			} else {
+				if !write(emitter, value, &i) {
+					return false
+				}
+			}
+			spaces = true
+		} else if is_break(value, i) {
+			if !breaks && value[i] == '\n' {
+				if !put_break(emitter) {
+					return false
+				}
+			}
+			if !write_break(emitter, value, &i) {
+				return false
+			}
+			emitter.indention = true
+			breaks = true
+		} else {
+			if breaks {
+				if !yaml_emitter_write_indent(emitter) {
+					return false
+				}
+			}
+			if value[i] == '\'' {
+				if !put(emitter, '\'') {
+					return false
+				}
+			}
+			if !write(emitter, value, &i) {
+				return false
+			}
+			emitter.indention = false
+			spaces = false
+			breaks = false
+		}
+	}
+	if !yaml_emitter_write_indicator(emitter, []byte{'\''}, false, false, false) {
+		return false
+	}
+	emitter.whitespace = false
+	emitter.indention = false
+	return true
+}
+
+func yaml_emitter_write_double_quoted_scalar(emitter *yaml_emitter_t, value []byte, allow_breaks bool) bool {
+	spaces := false
+	if !yaml_emitter_write_indicator(emitter, []byte{'"'}, true, false, false) {
+		return false
+	}
+
+	for i := 0; i < len(value); {
+		if !is_printable(value, i) || (!emitter.unicode && !is_ascii(value, i)) ||
+			is_bom(value, i) || is_break(value, i) ||
+			value[i] == '"' || value[i] == '\\' {
+
+			octet := value[i]
+
+			var w int
+			var v rune
+			switch {
+			case octet&0x80 == 0x00:
+				w, v = 1, rune(octet&0x7F)
+			case octet&0xE0 == 0xC0:
+				w, v = 2, rune(octet&0x1F)
+			case octet&0xF0 == 0xE0:
+				w, v = 3, rune(octet&0x0F)
+			case octet&0xF8 == 0xF0:
+				w, v = 4, rune(octet&0x07)
+			}
+			for k := 1; k < w; k++ {
+				octet = value[i+k]
+				v = (v << 6) + (rune(octet) & 0x3F)
+			}
+			i += w
+
+			if !put(emitter, '\\') {
+				return false
+			}
+
+			var ok bool
+			switch v {
+			case 0x00:
+				ok = put(emitter, '0')
+			case 0x07:
+				ok = put(emitter, 'a')
+			case 0x08:
+				ok = put(emitter, 'b')
+			case 0x09:
+				ok = put(emitter, 't')
+			case 0x0A:
+				ok = put(emitter, 'n')
+			case 0x0b:
+				ok = put(emitter, 'v')
+			case 0x0c:
+				ok = put(emitter, 'f')
+			case 0x0d:
+				ok = put(emitter, 'r')
+			case 0x1b:
+				ok = put(emitter, 'e')
+			case 0x22:
+				ok = put(emitter, '"')
+			case 0x5c:
+				ok = put(emitter, '\\')
+			case 0x85:
+				ok = put(emitter, 'N')
+			case 0xA0:
+				ok = put(emitter, '_')
+			case 0x2028:
+				ok = put(emitter, 'L')
+			case 0x2029:
+				ok = put(emitter, 'P')
+			default:
+				if v <= 0xFF {
+					ok = put(emitter, 'x')
+					w = 2
+				} else if v <= 0xFFFF {
+					ok = put(emitter, 'u')
+					w = 4
+				} else {
+					ok = put(emitter, 'U')
+					w = 8
+				}
+				for k := (w - 1) * 4; ok && k >= 0; k -= 4 {
+					digit := byte((v >> uint(k)) & 0x0F)
+					if digit < 10 {
+						ok = put(emitter, digit+'0')
+					} else {
+						ok = put(emitter, digit+'A'-10)
+					}
+				}
+			}
+			if !ok {
+				return false
+			}
+			spaces = false
+		} else if is_space(value, i) {
+			if allow_breaks && !spaces && emitter.column > emitter.best_width && i > 0 && i < len(value)-1 {
+				if !yaml_emitter_write_indent(emitter) {
+					return false
+				}
+				if is_space(value, i+1) {
+					if !put(emitter, '\\') {
+						return false
+					}
+				}
+				i += width(value[i])
+			} else if !write(emitter, value, &i) {
+				return false
+			}
+			spaces = true
+		} else {
+			if !write(emitter, value, &i) {
+				return false
+			}
+			spaces = false
+		}
+	}
+	if !yaml_emitter_write_indicator(emitter, []byte{'"'}, false, false, false) {
+		return false
+	}
+	emitter.whitespace = false
+	emitter.indention = false
+	return true
+}
+
+func yaml_emitter_write_block_scalar_hints(emitter *yaml_emitter_t, value []byte) bool {
+	if is_space(value, 0) || is_break(value, 0) {
+		indent_hint := []byte{'0' + byte(emitter.best_indent)}
+		if !yaml_emitter_write_indicator(emitter, indent_hint, false, false, false) {
+			return false
+		}
+	}
+
+	emitter.open_ended = false
+
+	var chomp_hint [1]byte
+	if len(value) == 0 {
+		chomp_hint[0] = '-'
+	} else {
+		i := len(value) - 1
+		for value[i]&0xC0 == 0x80 {
+			i--
+		}
+		if !is_break(value, i) {
+			chomp_hint[0] = '-'
+		} else if i == 0 {
+			chomp_hint[0] = '+'
+			emitter.open_ended = true
+		} else {
+			i--
+			for value[i]&0xC0 == 0x80 {
+				i--
+			}
+			if is_break(value, i) {
+				chomp_hint[0] = '+'
+				emitter.open_ended = true
+			}
+		}
+	}
+	if chomp_hint[0] != 0 {
+		if !yaml_emitter_write_indicator(emitter, chomp_hint[:], false, false, false) {
+			return false
+		}
+	}
+	return true
+}
+
+func yaml_emitter_write_literal_scalar(emitter *yaml_emitter_t, value []byte) bool {
+	if !yaml_emitter_write_indicator(emitter, []byte{'|'}, true, false, false) {
+		return false
+	}
+	if !yaml_emitter_write_block_scalar_hints(emitter, value) {
+		return false
+	}
+	if !put_break(emitter) {
+		return false
+	}
+	emitter.indention = true
+	emitter.whitespace = true
+	breaks := true
+	for i := 0; i < len(value); {
+		if is_break(value, i) {
+			if !write_break(emitter, value, &i) {
+				return false
+			}
+			emitter.indention = true
+			breaks = true
+		} else {
+			if breaks {
+				if !yaml_emitter_write_indent(emitter) {
+					return false
+				}
+			}
+			if !write(emitter, value, &i) {
+				return false
+			}
+			emitter.indention = false
+			breaks = false
+		}
+	}
+
+	return true
+}
+
+func yaml_emitter_write_folded_scalar(emitter *yaml_emitter_t, value []byte) bool {
+	if !yaml_emitter_write_indicator(emitter, []byte{'>'}, true, false, false) {
+		return false
+	}
+	if !yaml_emitter_write_block_scalar_hints(emitter, value) {
+		return false
+	}
+
+	if !put_break(emitter) {
+		return false
+	}
+	emitter.indention = true
+	emitter.whitespace = true
+
+	breaks := true
+	leading_spaces := true
+	for i := 0; i < len(value); {
+		if is_break(value, i) {
+			if !breaks && !leading_spaces && value[i] == '\n' {
+				k := 0
+				for is_break(value, k) {
+					k += width(value[k])
+				}
+				if !is_blankz(value, k) {
+					if !put_break(emitter) {
+						return false
+					}
+				}
+			}
+			if !write_break(emitter, value, &i) {
+				return false
+			}
+			emitter.indention = true
+			breaks = true
+		} else {
+			if breaks {
+				if !yaml_emitter_write_indent(emitter) {
+					return false
+				}
+				leading_spaces = is_blank(value, i)
+			}
+			if !breaks && is_space(value, i) && !is_space(value, i+1) && emitter.column > emitter.best_width {
+				if !yaml_emitter_write_indent(emitter) {
+					return false
+				}
+				i += width(value[i])
+			} else {
+				if !write(emitter, value, &i) {
+					return false
+				}
+			}
+			emitter.indention = false
+			breaks = false
+		}
+	}
+	return true
+}
diff --git a/encode.go b/encode.go
index c7fcdb2..ad7853c 100644
--- a/encode.go
+++ b/encode.go
@@ -1,84 +1,56 @@
 package goyaml
 
-// #include "helpers.h"
-import "C"
-
 import (
 	"reflect"
 	"sort"
 	"strconv"
-	"unsafe"
 )
 
 type encoder struct {
-	emitter C.yaml_emitter_t
-	event   C.yaml_event_t
+	emitter yaml_emitter_t
+	event   yaml_event_t
 	out     []byte
-	tmp     []byte
-	tmph    *reflect.SliceHeader
 	flow    bool
 }
 
-//export outputHandler
-func outputHandler(data unsafe.Pointer, buffer *C.uchar, size C.size_t) C.int {
-	e := (*encoder)(data)
-	e.tmph.Data = uintptr(unsafe.Pointer(buffer))
-	e.tmph.Len = int(size)
-	e.tmph.Cap = int(size)
-	e.out = append(e.out, e.tmp...)
-	return 1
-}
-
 func newEncoder() (e *encoder) {
 	e = &encoder{}
-	e.tmph = (*reflect.SliceHeader)(unsafe.Pointer(&e.tmp))
-	if C.yaml_emitter_initialize(&e.emitter) == 0 {
-		panic("Failed to initialize YAML emitter")
-	}
-	C.set_output_handler(&e.emitter)
-	C.yaml_stream_start_event_initialize(&e.event, C.YAML_UTF8_ENCODING)
+	e.must(yaml_emitter_initialize(&e.emitter))
+	yaml_emitter_set_output_string(&e.emitter, &e.out)
+	e.must(yaml_stream_start_event_initialize(&e.event, yaml_UTF8_ENCODING))
 	e.emit()
-	C.yaml_document_start_event_initialize(&e.event, nil, nil, nil, 1)
+	e.must(yaml_document_start_event_initialize(&e.event, nil, nil, true))
 	e.emit()
 	return e
 }
 
 func (e *encoder) finish() {
-	C.yaml_document_end_event_initialize(&e.event, 1)
+	e.must(yaml_document_end_event_initialize(&e.event, true))
 	e.emit()
-	e.emitter.open_ended = 0
-	C.yaml_stream_end_event_initialize(&e.event)
+	e.emitter.open_ended = false
+	e.must(yaml_stream_end_event_initialize(&e.event))
 	e.emit()
 }
 
 func (e *encoder) destroy() {
-	C.yaml_emitter_delete(&e.emitter)
+	yaml_emitter_delete(&e.emitter)
 }
 
 func (e *encoder) emit() {
 	// This will internally delete the e.event value.
-	if C.yaml_emitter_emit(&e.emitter, &e.event) == 0 &&
-		e.event._type != C.YAML_DOCUMENT_END_EVENT &&
-		e.event._type != C.YAML_STREAM_END_EVENT {
-		if e.emitter.error == C.YAML_EMITTER_ERROR {
-			// XXX TESTME
-			panic("YAML emitter error: " + C.GoString(e.emitter.problem))
-		} else {
-			// XXX TESTME
-			panic("Unknown YAML emitter error")
-		}
+	if !yaml_emitter_emit(&e.emitter, &e.event) && e.event.typ != yaml_DOCUMENT_END_EVENT && e.event.typ != yaml_STREAM_END_EVENT {
+		e.must(false)
 	}
 }
 
-func (e *encoder) fail(msg string) {
-	if msg == "" {
-		if e.emitter.problem != nil {
-			msg = C.GoString(e.emitter.problem)
-		} else {
+func (e *encoder) must(ok bool) {
+	if !ok {
+		msg := e.emitter.problem
+		if msg == "" {
 			msg = "Unknown problem generating YAML content"
 		}
+		panic(msg)
 	}
-	panic(msg)
 }
 
 func (e *encoder) marshal(tag string, in reflect.Value) {
@@ -155,62 +127,43 @@
 }
 
 func (e *encoder) mappingv(tag string, f func()) {
-	var ctag *C.yaml_char_t
-	var free func()
-	cimplicit := C.int(1)
-	if tag != "" {
-		ctag, free = ystr(tag)
-		defer free()
-		cimplicit = 0
-	}
-	cstyle := C.yaml_mapping_style_t(C.YAML_BLOCK_MAPPING_STYLE)
+	implicit := tag == ""
+	style := yaml_BLOCK_MAPPING_STYLE
 	if e.flow {
 		e.flow = false
-		cstyle = C.YAML_FLOW_MAPPING_STYLE
+		style = yaml_FLOW_MAPPING_STYLE
 	}
-	C.yaml_mapping_start_event_initialize(&e.event, nil, ctag, cimplicit,
-		cstyle)
+	e.must(yaml_mapping_start_event_initialize(&e.event, nil, []byte(tag), implicit, style))
 	e.emit()
 	f()
-	C.yaml_mapping_end_event_initialize(&e.event)
+	e.must(yaml_mapping_end_event_initialize(&e.event))
 	e.emit()
 }
 
 func (e *encoder) slicev(tag string, in reflect.Value) {
-	var ctag *C.yaml_char_t
-	var free func()
-	var cimplicit C.int
-	if tag != "" {
-		ctag, free = ystr(tag)
-		defer free()
-		cimplicit = 0
-	} else {
-		cimplicit = 1
-	}
-
-	cstyle := C.yaml_sequence_style_t(C.YAML_BLOCK_SEQUENCE_STYLE)
+	implicit := tag == ""
+	style := yaml_BLOCK_SEQUENCE_STYLE
 	if e.flow {
 		e.flow = false
-		cstyle = C.YAML_FLOW_SEQUENCE_STYLE
+		style = yaml_FLOW_SEQUENCE_STYLE
 	}
-	C.yaml_sequence_start_event_initialize(&e.event, nil, ctag, cimplicit,
-		cstyle)
+	e.must(yaml_sequence_start_event_initialize(&e.event, nil, []byte(tag), implicit, style))
 	e.emit()
 	n := in.Len()
 	for i := 0; i < n; i++ {
 		e.marshal("", in.Index(i))
 	}
-	C.yaml_sequence_end_event_initialize(&e.event)
+	e.must(yaml_sequence_end_event_initialize(&e.event))
 	e.emit()
 }
 
 func (e *encoder) stringv(tag string, in reflect.Value) {
-	var style C.yaml_scalar_style_t
+	var style yaml_scalar_style_t
 	s := in.String()
 	if rtag, _ := resolve("", s); rtag != "!!str" {
-		style = C.YAML_DOUBLE_QUOTED_SCALAR_STYLE
+		style = yaml_DOUBLE_QUOTED_SCALAR_STYLE
 	} else {
-		style = C.YAML_PLAIN_SCALAR_STYLE
+		style = yaml_PLAIN_SCALAR_STYLE
 	}
 	e.emitScalar(s, "", tag, style)
 }
@@ -222,17 +175,17 @@
 	} else {
 		s = "false"
 	}
-	e.emitScalar(s, "", tag, C.YAML_PLAIN_SCALAR_STYLE)
+	e.emitScalar(s, "", tag, yaml_PLAIN_SCALAR_STYLE)
 }
 
 func (e *encoder) intv(tag string, in reflect.Value) {
 	s := strconv.FormatInt(in.Int(), 10)
-	e.emitScalar(s, "", tag, C.YAML_PLAIN_SCALAR_STYLE)
+	e.emitScalar(s, "", tag, yaml_PLAIN_SCALAR_STYLE)
 }
 
 func (e *encoder) uintv(tag string, in reflect.Value) {
 	s := strconv.FormatUint(in.Uint(), 10)
-	e.emitScalar(s, "", tag, C.YAML_PLAIN_SCALAR_STYLE)
+	e.emitScalar(s, "", tag, yaml_PLAIN_SCALAR_STYLE)
 }
 
 func (e *encoder) floatv(tag string, in reflect.Value) {
@@ -246,42 +199,18 @@
 	case "NaN":
 		s = ".nan"
 	}
-	e.emitScalar(s, "", tag, C.YAML_PLAIN_SCALAR_STYLE)
+	e.emitScalar(s, "", tag, yaml_PLAIN_SCALAR_STYLE)
 }
 
 func (e *encoder) nilv() {
-	e.emitScalar("null", "", "", C.YAML_PLAIN_SCALAR_STYLE)
+	e.emitScalar("null", "", "", yaml_PLAIN_SCALAR_STYLE)
 }
 
-func (e *encoder) emitScalar(value, anchor, tag string, style C.yaml_scalar_style_t) {
-	var canchor, ctag, cvalue *C.yaml_char_t
-	var cimplicit C.int
-	var free func()
-	if anchor != "" {
-		canchor, free = ystr(anchor)
-		defer free()
+func (e *encoder) emitScalar(value, anchor, tag string, style yaml_scalar_style_t) {
+	implicit := tag == ""
+	if !implicit {
+		style = yaml_PLAIN_SCALAR_STYLE
 	}
-	if tag != "" {
-		ctag, free = ystr(tag)
-		defer free()
-		cimplicit = 0
-		style = C.YAML_PLAIN_SCALAR_STYLE
-	} else {
-		cimplicit = 1
-	}
-	cvalue, free = ystr(value)
-	defer free()
-	size := C.int(len(value))
-	if C.yaml_scalar_event_initialize(&e.event, canchor, ctag, cvalue, size,
-		cimplicit, cimplicit, style) == 0 {
-		e.fail("")
-	}
+	e.must(yaml_scalar_event_initialize(&e.event, []byte(anchor), []byte(tag), []byte(value), implicit, implicit, style))
 	e.emit()
 }
-
-func ystr(s string) (ys *C.yaml_char_t, free func()) {
-	up := unsafe.Pointer(C.CString(s))
-	ys = (*C.yaml_char_t)(up)
-	free = func() { C.free(up) }
-	return ys, free
-}
diff --git a/encode_test.go b/encode_test.go
index 1d63c02..0d34d88 100644
--- a/encode_test.go
+++ b/encode_test.go
@@ -12,105 +12,194 @@
 var marshalIntTest = 123
 
 var marshalTests = []struct {
-	data  string
 	value interface{}
+	data  string
 }{
-	{"{}\n", &struct{}{}},
-	{"v: hi\n", map[string]string{"v": "hi"}},
-	{"v: hi\n", map[string]interface{}{"v": "hi"}},
-	{"v: \"true\"\n", map[string]string{"v": "true"}},
-	{"v: \"false\"\n", map[string]string{"v": "false"}},
-	{"v: true\n", map[string]interface{}{"v": true}},
-	{"v: false\n", map[string]interface{}{"v": false}},
-	{"v: 10\n", map[string]interface{}{"v": 10}},
-	{"v: -10\n", map[string]interface{}{"v": -10}},
-	{"v: 42\n", map[string]uint{"v": 42}},
-	{"v: 4294967296\n", map[string]interface{}{"v": int64(4294967296)}},
-	{"v: 4294967296\n", map[string]int64{"v": int64(4294967296)}},
-	{"v: 4294967296\n", map[string]uint64{"v": 4294967296}},
-	{"v: \"10\"\n", map[string]interface{}{"v": "10"}},
-	{"v: 0.1\n", map[string]interface{}{"v": 0.1}},
-	{"v: 0.1\n", map[string]interface{}{"v": float64(0.1)}},
-	{"v: -0.1\n", map[string]interface{}{"v": -0.1}},
-	{"v: .inf\n", map[string]interface{}{"v": math.Inf(+1)}},
-	{"v: -.inf\n", map[string]interface{}{"v": math.Inf(-1)}},
-	{"v: .nan\n", map[string]interface{}{"v": math.NaN()}},
-	{"v: null\n", map[string]interface{}{"v": nil}},
-	{"v: \"\"\n", map[string]interface{}{"v": ""}},
-	{"v:\n- A\n- B\n", map[string][]string{"v": []string{"A", "B"}}},
-	{"v:\n- A\n- 1\n", map[string][]interface{}{"v": []interface{}{"A", 1}}},
-	{"a:\n  b: c\n",
-		map[string]interface{}{"a": map[interface{}]interface{}{"b": "c"}}},
+	{
+		&struct{}{},
+		"{}\n",
+	}, {
+		map[string]string{"v": "hi"},
+		"v: hi\n",
+	}, {
+		map[string]interface{}{"v": "hi"},
+		"v: hi\n",
+	}, {
+		map[string]string{"v": "true"},
+		"v: \"true\"\n",
+	}, {
+		map[string]string{"v": "false"},
+		"v: \"false\"\n",
+	}, {
+		map[string]interface{}{"v": true},
+		"v: true\n",
+	}, {
+		map[string]interface{}{"v": false},
+		"v: false\n",
+	}, {
+		map[string]interface{}{"v": 10},
+		"v: 10\n",
+	}, {
+		map[string]interface{}{"v": -10},
+		"v: -10\n",
+	}, {
+		map[string]uint{"v": 42},
+		"v: 42\n",
+	}, {
+		map[string]interface{}{"v": int64(4294967296)},
+		"v: 4294967296\n",
+	}, {
+		map[string]int64{"v": int64(4294967296)},
+		"v: 4294967296\n",
+	}, {
+		map[string]uint64{"v": 4294967296},
+		"v: 4294967296\n",
+	}, {
+		map[string]interface{}{"v": "10"},
+		"v: \"10\"\n",
+	}, {
+		map[string]interface{}{"v": 0.1},
+		"v: 0.1\n",
+	}, {
+		map[string]interface{}{"v": float64(0.1)},
+		"v: 0.1\n",
+	}, {
+		map[string]interface{}{"v": -0.1},
+		"v: -0.1\n",
+	}, {
+		map[string]interface{}{"v": math.Inf(+1)},
+		"v: .inf\n",
+	}, {
+		map[string]interface{}{"v": math.Inf(-1)},
+		"v: -.inf\n",
+	}, {
+		map[string]interface{}{"v": math.NaN()},
+		"v: .nan\n",
+	}, {
+		map[string]interface{}{"v": nil},
+		"v: null\n",
+	}, {
+		map[string]interface{}{"v": ""},
+		"v: \"\"\n",
+	}, {
+		map[string][]string{"v": []string{"A", "B"}},
+		"v:\n- A\n- B\n",
+	}, {
+		map[string][]string{"v": []string{"A", "B\nC"}},
+		"v:\n- A\n- 'B\n\n  C'\n",
+	}, {
+		map[string][]interface{}{"v": []interface{}{"A", 1, map[string][]int{"B": []int{2, 3}}}},
+		"v:\n- A\n- 1\n- B:\n  - 2\n  - 3\n",
+	}, {
+		map[string]interface{}{"a": map[interface{}]interface{}{"b": "c"}},
+		"a:\n  b: c\n",
+	},
 
 	// Simple values.
-	{"123\n", &marshalIntTest},
+	{
+		&marshalIntTest,
+		"123\n",
+	},
 
 	// Structures
-	{"hello: world\n", &struct{ Hello string }{"world"}},
-	{"a:\n  b: c\n", &struct {
-		A struct {
-			B string
-		}
-	}{struct{ B string }{"c"}}},
-	{"a:\n  b: c\n", &struct {
-		A *struct {
-			B string
-		}
-	}{&struct{ B string }{"c"}}},
-	{"a: null\n", &struct {
-		A *struct {
-			B string
-		}
-	}{}},
-	{"a: 1\n", &struct{ A int }{1}},
-	{"a:\n- 1\n- 2\n", &struct{ A []int }{[]int{1, 2}}},
-	{"a: 1\n", &struct {
-		B int "a"
-	}{1}},
-	{"a: true\n", &struct{ A bool }{true}},
-
-	// Conditional flag
-	{"a: 1\n", &struct {
-		A int "a,omitempty"
-		B int "b,omitempty"
-	}{1, 0}},
-	{"{}\n", &struct {
-		A int "a,omitempty"
-		B int "b,omitempty"
-	}{0, 0}},
-	{"{}\n", &struct {
-		A *struct{ X int } "a,omitempty"
-		B int              "b,omitempty"
-	}{nil, 0}},
-
-	// Flow flag
-	{"a: [1, 2]\n", &struct {
-		A []int "a,flow"
-	}{[]int{1, 2}}},
-	{"a: {b: c}\n",
-		&struct {
-			A map[string]string "a,flow"
-		}{map[string]string{"b": "c"}}},
-	{"a: {b: c}\n",
+	{
+		&struct{ Hello string }{"world"},
+		"hello: world\n",
+	}, {
 		&struct {
 			A struct {
 				B string
+			}
+		}{struct{ B string }{"c"}},
+		"a:\n  b: c\n",
+	}, {
+		&struct {
+			A *struct {
+				B string
+			}
+		}{&struct{ B string }{"c"}},
+		"a:\n  b: c\n",
+	}, {
+		&struct {
+			A *struct {
+				B string
+			}
+		}{},
+		"a: null\n",
+	}, {
+		&struct{ A int }{1},
+		"a: 1\n",
+	}, {
+		&struct{ A []int }{[]int{1, 2}},
+		"a:\n- 1\n- 2\n",
+	}, {
+		&struct {
+			B int "a"
+		}{1},
+		"a: 1\n",
+	}, {
+		&struct{ A bool }{true},
+		"a: true\n",
+	},
+
+	// Conditional flag
+	{
+		&struct {
+			A int "a,omitempty"
+			B int "b,omitempty"
+		}{1, 0},
+		"a: 1\n",
+	}, {
+		&struct {
+			A int "a,omitempty"
+			B int "b,omitempty"
+		}{0, 0},
+		"{}\n",
+	}, {
+		&struct {
+			A *struct{ X int } "a,omitempty"
+			B int              "b,omitempty"
+		}{nil, 0},
+		"{}\n",
+	},
+
+	// Flow flag
+	{
+		&struct {
+			A []int "a,flow"
+		}{[]int{1, 2}},
+		"a: [1, 2]\n",
+	}, {
+		&struct {
+			A map[string]string "a,flow"
+		}{map[string]string{"b": "c", "d": "e"}},
+		"a: {b: c, d: e}\n",
+	}, {
+		&struct {
+			A struct {
+				B, D string
 			} "a,flow"
-		}{struct{ B string }{"c"}}},
+		}{struct{ B, D string }{"c", "e"}},
+		"a: {b: c, d: e}\n",
+	},
 
 	// Unexported field
-	{"a: 1\n",
+	{
 		&struct {
 			u int
 			A int
-		}{0, 1}},
+		}{0, 1},
+		"a: 1\n",
+	},
 
 	// Ignored field
-	{"a: 1\n",
+	{
 		&struct {
 			A int
 			B int "-"
-		}{1, 2}},
+		}{1, 2},
+		"a: 1\n",
+	},
 }
 
 func (s *S) TestMarshal(c *C) {
diff --git a/helpers.c b/helpers.c
deleted file mode 100644
index 733b618..0000000
--- a/helpers.c
+++ /dev/null
@@ -1,18 +0,0 @@
-#include "_cgo_export.h"
-#include "helpers.h"
-
-#define DEFINE_YUNION_FUNC(name) \
-    __typeof__(((yaml_event_t *)0)->data.name) * \
-    event_##name(yaml_event_t *event) { \
-        return &event->data.name; \
-    }
-
-DEFINE_YUNION_FUNC(scalar)
-DEFINE_YUNION_FUNC(alias)
-DEFINE_YUNION_FUNC(mapping_start)
-DEFINE_YUNION_FUNC(sequence_start)
-
-void set_output_handler(yaml_emitter_t *e)
-{
-    yaml_emitter_set_output(e, (yaml_write_handler_t*)outputHandler, (void *)e);
-}
diff --git a/helpers.h b/helpers.h
deleted file mode 100644
index e4d8639..0000000
--- a/helpers.h
+++ /dev/null
@@ -1,20 +0,0 @@
-#ifndef helpers_h
-#define helpers_h
-
-#define CGO_LDFLAGS "-lm -lpthread"
-#define CGO_CFLAGS "-I. -DHAVE_CONFIG_H=1"
-
-#include <yaml.h>
-
-#define DECLARE_YUNION_FUNC(name) \
-    __typeof__(((yaml_event_t *)0)->data.name) *\
-    event_##name(yaml_event_t *event);
-
-DECLARE_YUNION_FUNC(scalar)
-DECLARE_YUNION_FUNC(alias)
-DECLARE_YUNION_FUNC(mapping_start)
-DECLARE_YUNION_FUNC(sequence_start)
-
-void set_output_handler(yaml_emitter_t *e);
-
-#endif
diff --git a/loader.c b/loader.c
deleted file mode 100644
index 9d3d912..0000000
--- a/loader.c
+++ /dev/null
@@ -1,432 +0,0 @@
-
-#include "yaml_private.h"
-
-/*
- * API functions.
- */
-
-YAML_DECLARE(int)
-yaml_parser_load(yaml_parser_t *parser, yaml_document_t *document);
-
-/*
- * Error handling.
- */
-
-static int
-yaml_parser_set_composer_error(yaml_parser_t *parser,
-        const char *problem, yaml_mark_t problem_mark);
-
-static int
-yaml_parser_set_composer_error_context(yaml_parser_t *parser,
-        const char *context, yaml_mark_t context_mark,
-        const char *problem, yaml_mark_t problem_mark);
-
-
-/*
- * Alias handling.
- */
-
-static int
-yaml_parser_register_anchor(yaml_parser_t *parser,
-        int index, yaml_char_t *anchor);
-
-/*
- * Clean up functions.
- */
-
-static void
-yaml_parser_delete_aliases(yaml_parser_t *parser);
-
-/*
- * Composer functions.
- */
-
-static int
-yaml_parser_load_document(yaml_parser_t *parser, yaml_event_t *first_event);
-
-static int
-yaml_parser_load_node(yaml_parser_t *parser, yaml_event_t *first_event);
-
-static int
-yaml_parser_load_alias(yaml_parser_t *parser, yaml_event_t *first_event);
-
-static int
-yaml_parser_load_scalar(yaml_parser_t *parser, yaml_event_t *first_event);
-
-static int
-yaml_parser_load_sequence(yaml_parser_t *parser, yaml_event_t *first_event);
-
-static int
-yaml_parser_load_mapping(yaml_parser_t *parser, yaml_event_t *first_event);
-
-/*
- * Load the next document of the stream.
- */
-
-YAML_DECLARE(int)
-yaml_parser_load(yaml_parser_t *parser, yaml_document_t *document)
-{
-    yaml_event_t event;
-
-    assert(parser);     /* Non-NULL parser object is expected. */
-    assert(document);   /* Non-NULL document object is expected. */
-
-    memset(document, 0, sizeof(yaml_document_t));
-    if (!STACK_INIT(parser, document->nodes, INITIAL_STACK_SIZE))
-        goto error;
-
-    if (!parser->stream_start_produced) {
-        if (!yaml_parser_parse(parser, &event)) goto error;
-        assert(event.type == YAML_STREAM_START_EVENT);
-                        /* STREAM-START is expected. */
-    }
-
-    if (parser->stream_end_produced) {
-        return 1;
-    }
-
-    if (!yaml_parser_parse(parser, &event)) goto error;
-    if (event.type == YAML_STREAM_END_EVENT) {
-        return 1;
-    }
-
-    if (!STACK_INIT(parser, parser->aliases, INITIAL_STACK_SIZE))
-        goto error;
-
-    parser->document = document;
-
-    if (!yaml_parser_load_document(parser, &event)) goto error;
-
-    yaml_parser_delete_aliases(parser);
-    parser->document = NULL;
-
-    return 1;
-
-error:
-
-    yaml_parser_delete_aliases(parser);
-    yaml_document_delete(document);
-    parser->document = NULL;
-
-    return 0;
-}
-
-/*
- * Set composer error.
- */
-
-static int
-yaml_parser_set_composer_error(yaml_parser_t *parser,
-        const char *problem, yaml_mark_t problem_mark)
-{
-    parser->error = YAML_COMPOSER_ERROR;
-    parser->problem = problem;
-    parser->problem_mark = problem_mark;
-
-    return 0;
-}
-
-/*
- * Set composer error with context.
- */
-
-static int
-yaml_parser_set_composer_error_context(yaml_parser_t *parser,
-        const char *context, yaml_mark_t context_mark,
-        const char *problem, yaml_mark_t problem_mark)
-{
-    parser->error = YAML_COMPOSER_ERROR;
-    parser->context = context;
-    parser->context_mark = context_mark;
-    parser->problem = problem;
-    parser->problem_mark = problem_mark;
-
-    return 0;
-}
-
-/*
- * Delete the stack of aliases.
- */
-
-static void
-yaml_parser_delete_aliases(yaml_parser_t *parser)
-{
-    while (!STACK_EMPTY(parser, parser->aliases)) {
-        yaml_free(POP(parser, parser->aliases).anchor);
-    }
-    STACK_DEL(parser, parser->aliases);
-}
-
-/*
- * Compose a document object.
- */
-
-static int
-yaml_parser_load_document(yaml_parser_t *parser, yaml_event_t *first_event)
-{
-    yaml_event_t event;
-
-    assert(first_event->type == YAML_DOCUMENT_START_EVENT);
-                        /* DOCUMENT-START is expected. */
-
-    parser->document->version_directive
-        = first_event->data.document_start.version_directive;
-    parser->document->tag_directives.start
-        = first_event->data.document_start.tag_directives.start;
-    parser->document->tag_directives.end
-        = first_event->data.document_start.tag_directives.end;
-    parser->document->start_implicit
-        = first_event->data.document_start.implicit;
-    parser->document->start_mark = first_event->start_mark;
-
-    if (!yaml_parser_parse(parser, &event)) return 0;
-
-    if (!yaml_parser_load_node(parser, &event)) return 0;
-
-    if (!yaml_parser_parse(parser, &event)) return 0;
-    assert(event.type == YAML_DOCUMENT_END_EVENT);
-                        /* DOCUMENT-END is expected. */
-
-    parser->document->end_implicit = event.data.document_end.implicit;
-    parser->document->end_mark = event.end_mark;
-
-    return 1;
-}
-
-/*
- * Compose a node.
- */
-
-static int
-yaml_parser_load_node(yaml_parser_t *parser, yaml_event_t *first_event)
-{
-    switch (first_event->type) {
-        case YAML_ALIAS_EVENT:
-            return yaml_parser_load_alias(parser, first_event);
-        case YAML_SCALAR_EVENT:
-            return yaml_parser_load_scalar(parser, first_event);
-        case YAML_SEQUENCE_START_EVENT:
-            return yaml_parser_load_sequence(parser, first_event);
-        case YAML_MAPPING_START_EVENT:
-            return yaml_parser_load_mapping(parser, first_event);
-        default:
-            assert(0);  /* Could not happen. */
-            return 0;
-    }
-
-    return 0;
-}
-
-/*
- * Add an anchor.
- */
-
-static int
-yaml_parser_register_anchor(yaml_parser_t *parser,
-        int index, yaml_char_t *anchor)
-{
-    yaml_alias_data_t data;
-    yaml_alias_data_t *alias_data;
-
-    if (!anchor) return 1;
-
-    data.anchor = anchor;
-    data.index = index;
-    data.mark = parser->document->nodes.start[index-1].start_mark;
-
-    for (alias_data = parser->aliases.start;
-            alias_data != parser->aliases.top; alias_data ++) {
-        if (strcmp((char *)alias_data->anchor, (char *)anchor) == 0) {
-            yaml_free(anchor);
-            return yaml_parser_set_composer_error_context(parser,
-                    "found duplicate anchor; first occurence",
-                    alias_data->mark, "second occurence", data.mark);
-        }
-    }
-
-    if (!PUSH(parser, parser->aliases, data)) {
-        yaml_free(anchor);
-        return 0;
-    }
-
-    return 1;
-}
-
-/*
- * Compose a node corresponding to an alias.
- */
-
-static int
-yaml_parser_load_alias(yaml_parser_t *parser, yaml_event_t *first_event)
-{
-    yaml_char_t *anchor = first_event->data.alias.anchor;
-    yaml_alias_data_t *alias_data;
-
-    for (alias_data = parser->aliases.start;
-            alias_data != parser->aliases.top; alias_data ++) {
-        if (strcmp((char *)alias_data->anchor, (char *)anchor) == 0) {
-            yaml_free(anchor);
-            return alias_data->index;
-        }
-    }
-
-    yaml_free(anchor);
-    return yaml_parser_set_composer_error(parser, "found undefined alias",
-            first_event->start_mark);
-}
-
-/*
- * Compose a scalar node.
- */
-
-static int
-yaml_parser_load_scalar(yaml_parser_t *parser, yaml_event_t *first_event)
-{
-    yaml_node_t node;
-    int index;
-    yaml_char_t *tag = first_event->data.scalar.tag;
-
-    if (!tag || strcmp((char *)tag, "!") == 0) {
-        yaml_free(tag);
-        tag = yaml_strdup((yaml_char_t *)YAML_DEFAULT_SCALAR_TAG);
-        if (!tag) goto error;
-    }
-
-    SCALAR_NODE_INIT(node, tag, first_event->data.scalar.value,
-            first_event->data.scalar.length, first_event->data.scalar.style,
-            first_event->start_mark, first_event->end_mark);
-
-    if (!PUSH(parser, parser->document->nodes, node)) goto error;
-
-    index = parser->document->nodes.top - parser->document->nodes.start;
-
-    if (!yaml_parser_register_anchor(parser, index,
-                first_event->data.scalar.anchor)) return 0;
-
-    return index;
-
-error:
-    yaml_free(tag);
-    yaml_free(first_event->data.scalar.anchor);
-    yaml_free(first_event->data.scalar.value);
-    return 0;
-}
-
-/*
- * Compose a sequence node.
- */
-
-static int
-yaml_parser_load_sequence(yaml_parser_t *parser, yaml_event_t *first_event)
-{
-    yaml_event_t event;
-    yaml_node_t node;
-    struct {
-        yaml_node_item_t *start;
-        yaml_node_item_t *end;
-        yaml_node_item_t *top;
-    } items = { NULL, NULL, NULL };
-    int index, item_index;
-    yaml_char_t *tag = first_event->data.sequence_start.tag;
-
-    if (!tag || strcmp((char *)tag, "!") == 0) {
-        yaml_free(tag);
-        tag = yaml_strdup((yaml_char_t *)YAML_DEFAULT_SEQUENCE_TAG);
-        if (!tag) goto error;
-    }
-
-    if (!STACK_INIT(parser, items, INITIAL_STACK_SIZE)) goto error;
-
-    SEQUENCE_NODE_INIT(node, tag, items.start, items.end,
-            first_event->data.sequence_start.style,
-            first_event->start_mark, first_event->end_mark);
-
-    if (!PUSH(parser, parser->document->nodes, node)) goto error;
-
-    index = parser->document->nodes.top - parser->document->nodes.start;
-
-    if (!yaml_parser_register_anchor(parser, index,
-                first_event->data.sequence_start.anchor)) return 0;
-
-    if (!yaml_parser_parse(parser, &event)) return 0;
-
-    while (event.type != YAML_SEQUENCE_END_EVENT) {
-        item_index = yaml_parser_load_node(parser, &event);
-        if (!item_index) return 0;
-        if (!PUSH(parser,
-                    parser->document->nodes.start[index-1].data.sequence.items,
-                    item_index)) return 0;
-        if (!yaml_parser_parse(parser, &event)) return 0;
-    }
-
-    parser->document->nodes.start[index-1].end_mark = event.end_mark;
-
-    return index;
-
-error:
-    yaml_free(tag);
-    yaml_free(first_event->data.sequence_start.anchor);
-    return 0;
-}
-
-/*
- * Compose a mapping node.
- */
-
-static int
-yaml_parser_load_mapping(yaml_parser_t *parser, yaml_event_t *first_event)
-{
-    yaml_event_t event;
-    yaml_node_t node;
-    struct {
-        yaml_node_pair_t *start;
-        yaml_node_pair_t *end;
-        yaml_node_pair_t *top;
-    } pairs = { NULL, NULL, NULL };
-    int index;
-    yaml_node_pair_t pair;
-    yaml_char_t *tag = first_event->data.mapping_start.tag;
-
-    if (!tag || strcmp((char *)tag, "!") == 0) {
-        yaml_free(tag);
-        tag = yaml_strdup((yaml_char_t *)YAML_DEFAULT_MAPPING_TAG);
-        if (!tag) goto error;
-    }
-
-    if (!STACK_INIT(parser, pairs, INITIAL_STACK_SIZE)) goto error;
-
-    MAPPING_NODE_INIT(node, tag, pairs.start, pairs.end,
-            first_event->data.mapping_start.style,
-            first_event->start_mark, first_event->end_mark);
-
-    if (!PUSH(parser, parser->document->nodes, node)) goto error;
-
-    index = parser->document->nodes.top - parser->document->nodes.start;
-
-    if (!yaml_parser_register_anchor(parser, index,
-                first_event->data.mapping_start.anchor)) return 0;
-
-    if (!yaml_parser_parse(parser, &event)) return 0;
-
-    while (event.type != YAML_MAPPING_END_EVENT) {
-        pair.key = yaml_parser_load_node(parser, &event);
-        if (!pair.key) return 0;
-        if (!yaml_parser_parse(parser, &event)) return 0;
-        pair.value = yaml_parser_load_node(parser, &event);
-        if (!pair.value) return 0;
-        if (!PUSH(parser,
-                    parser->document->nodes.start[index-1].data.mapping.pairs,
-                    pair)) return 0;
-        if (!yaml_parser_parse(parser, &event)) return 0;
-    }
-
-    parser->document->nodes.start[index-1].end_mark = event.end_mark;
-
-    return index;
-
-error:
-    yaml_free(tag);
-    yaml_free(first_event->data.mapping_start.anchor);
-    return 0;
-}
-
diff --git a/parser.c b/parser.c
deleted file mode 100644
index eb2a2c7..0000000
--- a/parser.c
+++ /dev/null
@@ -1,1374 +0,0 @@
-
-/*
- * The parser implements the following grammar:
- *
- * stream               ::= STREAM-START implicit_document? explicit_document* STREAM-END
- * implicit_document    ::= block_node DOCUMENT-END*
- * explicit_document    ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
- * block_node_or_indentless_sequence    ::=
- *                          ALIAS
- *                          | properties (block_content | indentless_block_sequence)?
- *                          | block_content
- *                          | indentless_block_sequence
- * block_node           ::= ALIAS
- *                          | properties block_content?
- *                          | block_content
- * flow_node            ::= ALIAS
- *                          | properties flow_content?
- *                          | flow_content
- * properties           ::= TAG ANCHOR? | ANCHOR TAG?
- * block_content        ::= block_collection | flow_collection | SCALAR
- * flow_content         ::= flow_collection | SCALAR
- * block_collection     ::= block_sequence | block_mapping
- * flow_collection      ::= flow_sequence | flow_mapping
- * block_sequence       ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END
- * indentless_sequence  ::= (BLOCK-ENTRY block_node?)+
- * block_mapping        ::= BLOCK-MAPPING_START
- *                          ((KEY block_node_or_indentless_sequence?)?
- *                          (VALUE block_node_or_indentless_sequence?)?)*
- *                          BLOCK-END
- * flow_sequence        ::= FLOW-SEQUENCE-START
- *                          (flow_sequence_entry FLOW-ENTRY)*
- *                          flow_sequence_entry?
- *                          FLOW-SEQUENCE-END
- * flow_sequence_entry  ::= flow_node | KEY flow_node? (VALUE flow_node?)?
- * flow_mapping         ::= FLOW-MAPPING-START
- *                          (flow_mapping_entry FLOW-ENTRY)*
- *                          flow_mapping_entry?
- *                          FLOW-MAPPING-END
- * flow_mapping_entry   ::= flow_node | KEY flow_node? (VALUE flow_node?)?
- */
-
-#include "yaml_private.h"
-
-/*
- * Peek the next token in the token queue.
- */
-
-#define PEEK_TOKEN(parser)                                                      \
-    ((parser->token_available || yaml_parser_fetch_more_tokens(parser)) ?       \
-        parser->tokens.head : NULL)
-
-/*
- * Remove the next token from the queue (must be called after PEEK_TOKEN).
- */
-
-#define SKIP_TOKEN(parser)                                                      \
-    (parser->token_available = 0,                                               \
-     parser->tokens_parsed ++,                                                  \
-     parser->stream_end_produced =                                              \
-        (parser->tokens.head->type == YAML_STREAM_END_TOKEN),                   \
-     parser->tokens.head ++)
-
-/*
- * Public API declarations.
- */
-
-YAML_DECLARE(int)
-yaml_parser_parse(yaml_parser_t *parser, yaml_event_t *event);
-
-/*
- * Error handling.
- */
-
-static int
-yaml_parser_set_parser_error(yaml_parser_t *parser,
-        const char *problem, yaml_mark_t problem_mark);
-
-static int
-yaml_parser_set_parser_error_context(yaml_parser_t *parser,
-        const char *context, yaml_mark_t context_mark,
-        const char *problem, yaml_mark_t problem_mark);
-
-/*
- * State functions.
- */
-
-static int
-yaml_parser_state_machine(yaml_parser_t *parser, yaml_event_t *event);
-
-static int
-yaml_parser_parse_stream_start(yaml_parser_t *parser, yaml_event_t *event);
-
-static int
-yaml_parser_parse_document_start(yaml_parser_t *parser, yaml_event_t *event,
-        int implicit);
-
-static int
-yaml_parser_parse_document_content(yaml_parser_t *parser, yaml_event_t *event);
-
-static int
-yaml_parser_parse_document_end(yaml_parser_t *parser, yaml_event_t *event);
-
-static int
-yaml_parser_parse_node(yaml_parser_t *parser, yaml_event_t *event,
-        int block, int indentless_sequence);
-
-static int
-yaml_parser_parse_block_sequence_entry(yaml_parser_t *parser,
-        yaml_event_t *event, int first);
-
-static int
-yaml_parser_parse_indentless_sequence_entry(yaml_parser_t *parser,
-        yaml_event_t *event);
-
-static int
-yaml_parser_parse_block_mapping_key(yaml_parser_t *parser,
-        yaml_event_t *event, int first);
-
-static int
-yaml_parser_parse_block_mapping_value(yaml_parser_t *parser,
-        yaml_event_t *event);
-
-static int
-yaml_parser_parse_flow_sequence_entry(yaml_parser_t *parser,
-        yaml_event_t *event, int first);
-
-static int
-yaml_parser_parse_flow_sequence_entry_mapping_key(yaml_parser_t *parser,
-        yaml_event_t *event);
-
-static int
-yaml_parser_parse_flow_sequence_entry_mapping_value(yaml_parser_t *parser,
-        yaml_event_t *event);
-
-static int
-yaml_parser_parse_flow_sequence_entry_mapping_end(yaml_parser_t *parser,
-        yaml_event_t *event);
-
-static int
-yaml_parser_parse_flow_mapping_key(yaml_parser_t *parser,
-        yaml_event_t *event, int first);
-
-static int
-yaml_parser_parse_flow_mapping_value(yaml_parser_t *parser,
-        yaml_event_t *event, int empty);
-
-/*
- * Utility functions.
- */
-
-static int
-yaml_parser_process_empty_scalar(yaml_parser_t *parser,
-        yaml_event_t *event, yaml_mark_t mark);
-
-static int
-yaml_parser_process_directives(yaml_parser_t *parser,
-        yaml_version_directive_t **version_directive_ref,
-        yaml_tag_directive_t **tag_directives_start_ref,
-        yaml_tag_directive_t **tag_directives_end_ref);
-
-static int
-yaml_parser_append_tag_directive(yaml_parser_t *parser,
-        yaml_tag_directive_t value, int allow_duplicates, yaml_mark_t mark);
-
-/*
- * Get the next event.
- */
-
-YAML_DECLARE(int)
-yaml_parser_parse(yaml_parser_t *parser, yaml_event_t *event)
-{
-    assert(parser);     /* Non-NULL parser object is expected. */
-    assert(event);      /* Non-NULL event object is expected. */
-
-    /* Erase the event object. */
-
-    memset(event, 0, sizeof(yaml_event_t));
-
-    /* No events after the end of the stream or error. */
-
-    if (parser->stream_end_produced || parser->error ||
-            parser->state == YAML_PARSE_END_STATE) {
-        return 1;
-    }
-
-    /* Generate the next event. */
-
-    return yaml_parser_state_machine(parser, event);
-}
-
-/*
- * Set parser error.
- */
-
-static int
-yaml_parser_set_parser_error(yaml_parser_t *parser,
-        const char *problem, yaml_mark_t problem_mark)
-{
-    parser->error = YAML_PARSER_ERROR;
-    parser->problem = problem;
-    parser->problem_mark = problem_mark;
-
-    return 0;
-}
-
-static int
-yaml_parser_set_parser_error_context(yaml_parser_t *parser,
-        const char *context, yaml_mark_t context_mark,
-        const char *problem, yaml_mark_t problem_mark)
-{
-    parser->error = YAML_PARSER_ERROR;
-    parser->context = context;
-    parser->context_mark = context_mark;
-    parser->problem = problem;
-    parser->problem_mark = problem_mark;
-
-    return 0;
-}
-
-
-/*
- * State dispatcher.
- */
-
-static int
-yaml_parser_state_machine(yaml_parser_t *parser, yaml_event_t *event)
-{
-    switch (parser->state)
-    {
-        case YAML_PARSE_STREAM_START_STATE:
-            return yaml_parser_parse_stream_start(parser, event);
-
-        case YAML_PARSE_IMPLICIT_DOCUMENT_START_STATE:
-            return yaml_parser_parse_document_start(parser, event, 1);
-
-        case YAML_PARSE_DOCUMENT_START_STATE:
-            return yaml_parser_parse_document_start(parser, event, 0);
-
-        case YAML_PARSE_DOCUMENT_CONTENT_STATE:
-            return yaml_parser_parse_document_content(parser, event);
-
-        case YAML_PARSE_DOCUMENT_END_STATE:
-            return yaml_parser_parse_document_end(parser, event);
-
-        case YAML_PARSE_BLOCK_NODE_STATE:
-            return yaml_parser_parse_node(parser, event, 1, 0);
-
-        case YAML_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE:
-            return yaml_parser_parse_node(parser, event, 1, 1);
-
-        case YAML_PARSE_FLOW_NODE_STATE:
-            return yaml_parser_parse_node(parser, event, 0, 0);
-
-        case YAML_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE:
-            return yaml_parser_parse_block_sequence_entry(parser, event, 1);
-
-        case YAML_PARSE_BLOCK_SEQUENCE_ENTRY_STATE:
-            return yaml_parser_parse_block_sequence_entry(parser, event, 0);
-
-        case YAML_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE:
-            return yaml_parser_parse_indentless_sequence_entry(parser, event);
-
-        case YAML_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE:
-            return yaml_parser_parse_block_mapping_key(parser, event, 1);
-
-        case YAML_PARSE_BLOCK_MAPPING_KEY_STATE:
-            return yaml_parser_parse_block_mapping_key(parser, event, 0);
-
-        case YAML_PARSE_BLOCK_MAPPING_VALUE_STATE:
-            return yaml_parser_parse_block_mapping_value(parser, event);
-
-        case YAML_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE:
-            return yaml_parser_parse_flow_sequence_entry(parser, event, 1);
-
-        case YAML_PARSE_FLOW_SEQUENCE_ENTRY_STATE:
-            return yaml_parser_parse_flow_sequence_entry(parser, event, 0);
-
-        case YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE:
-            return yaml_parser_parse_flow_sequence_entry_mapping_key(parser, event);
-
-        case YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE:
-            return yaml_parser_parse_flow_sequence_entry_mapping_value(parser, event);
-
-        case YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE:
-            return yaml_parser_parse_flow_sequence_entry_mapping_end(parser, event);
-
-        case YAML_PARSE_FLOW_MAPPING_FIRST_KEY_STATE:
-            return yaml_parser_parse_flow_mapping_key(parser, event, 1);
-
-        case YAML_PARSE_FLOW_MAPPING_KEY_STATE:
-            return yaml_parser_parse_flow_mapping_key(parser, event, 0);
-
-        case YAML_PARSE_FLOW_MAPPING_VALUE_STATE:
-            return yaml_parser_parse_flow_mapping_value(parser, event, 0);
-
-        case YAML_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE:
-            return yaml_parser_parse_flow_mapping_value(parser, event, 1);
-
-        default:
-            assert(1);      /* Invalid state. */
-    }
-
-    return 0;
-}
-
-/*
- * Parse the production:
- * stream   ::= STREAM-START implicit_document? explicit_document* STREAM-END
- *              ************
- */
-
-static int
-yaml_parser_parse_stream_start(yaml_parser_t *parser, yaml_event_t *event)
-{
-    yaml_token_t *token;
-
-    token = PEEK_TOKEN(parser);
-    if (!token) return 0;
-
-    if (token->type != YAML_STREAM_START_TOKEN) {
-        return yaml_parser_set_parser_error(parser,
-                "did not find expected <stream-start>", token->start_mark);
-    }
-
-    parser->state = YAML_PARSE_IMPLICIT_DOCUMENT_START_STATE;
-    STREAM_START_EVENT_INIT(*event, token->data.stream_start.encoding,
-            token->start_mark, token->start_mark);
-    SKIP_TOKEN(parser);
-
-    return 1;
-}
-
-/*
- * Parse the productions:
- * implicit_document    ::= block_node DOCUMENT-END*
- *                          *
- * explicit_document    ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
- *                          *************************
- */
-
-static int
-yaml_parser_parse_document_start(yaml_parser_t *parser, yaml_event_t *event,
-        int implicit)
-{
-    yaml_token_t *token;
-    yaml_version_directive_t *version_directive = NULL;
-    struct {
-        yaml_tag_directive_t *start;
-        yaml_tag_directive_t *end;
-    } tag_directives = { NULL, NULL };
-
-    token = PEEK_TOKEN(parser);
-    if (!token) return 0;
-
-    /* Parse extra document end indicators. */
-
-    if (!implicit)
-    {
-        while (token->type == YAML_DOCUMENT_END_TOKEN) {
-            SKIP_TOKEN(parser);
-            token = PEEK_TOKEN(parser);
-            if (!token) return 0;
-        }
-    }
-
-    /* Parse an implicit document. */
-
-    if (implicit && token->type != YAML_VERSION_DIRECTIVE_TOKEN &&
-            token->type != YAML_TAG_DIRECTIVE_TOKEN &&
-            token->type != YAML_DOCUMENT_START_TOKEN &&
-            token->type != YAML_STREAM_END_TOKEN)
-    {
-        if (!yaml_parser_process_directives(parser, NULL, NULL, NULL))
-            return 0;
-        if (!PUSH(parser, parser->states, YAML_PARSE_DOCUMENT_END_STATE))
-            return 0;
-        parser->state = YAML_PARSE_BLOCK_NODE_STATE;
-        DOCUMENT_START_EVENT_INIT(*event, NULL, NULL, NULL, 1,
-                token->start_mark, token->start_mark);
-        return 1;
-    }
-
-    /* Parse an explicit document. */
-
-    else if (token->type != YAML_STREAM_END_TOKEN)
-    {
-        yaml_mark_t start_mark, end_mark;
-        start_mark = token->start_mark;
-        if (!yaml_parser_process_directives(parser, &version_directive,
-                    &tag_directives.start, &tag_directives.end))
-            return 0;
-        token = PEEK_TOKEN(parser);
-        if (!token) goto error;
-        if (token->type != YAML_DOCUMENT_START_TOKEN) {
-            yaml_parser_set_parser_error(parser,
-                    "did not find expected <document start>", token->start_mark);
-            goto error;
-        }
-        if (!PUSH(parser, parser->states, YAML_PARSE_DOCUMENT_END_STATE))
-            goto error;
-        parser->state = YAML_PARSE_DOCUMENT_CONTENT_STATE;
-        end_mark = token->end_mark;
-        DOCUMENT_START_EVENT_INIT(*event, version_directive,
-                tag_directives.start, tag_directives.end, 0,
-                start_mark, end_mark);
-        SKIP_TOKEN(parser);
-        version_directive = NULL;
-        tag_directives.start = tag_directives.end = NULL;
-        return 1;
-    }
-
-    /* Parse the stream end. */
-
-    else
-    {
-        parser->state = YAML_PARSE_END_STATE;
-        STREAM_END_EVENT_INIT(*event, token->start_mark, token->end_mark);
-        SKIP_TOKEN(parser);
-        return 1;
-    }
-
-error:
-    yaml_free(version_directive);
-    while (tag_directives.start != tag_directives.end) {
-        yaml_free(tag_directives.end[-1].handle);
-        yaml_free(tag_directives.end[-1].prefix);
-        tag_directives.end --;
-    }
-    yaml_free(tag_directives.start);
-    return 0;
-}
-
-/*
- * Parse the productions:
- * explicit_document    ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
- *                                                    ***********
- */
-
-static int
-yaml_parser_parse_document_content(yaml_parser_t *parser, yaml_event_t *event)
-{
-    yaml_token_t *token;
-
-    token = PEEK_TOKEN(parser);
-    if (!token) return 0;
-
-    if (token->type == YAML_VERSION_DIRECTIVE_TOKEN ||
-            token->type == YAML_TAG_DIRECTIVE_TOKEN ||
-            token->type == YAML_DOCUMENT_START_TOKEN ||
-            token->type == YAML_DOCUMENT_END_TOKEN ||
-            token->type == YAML_STREAM_END_TOKEN) {
-        parser->state = POP(parser, parser->states);
-        return yaml_parser_process_empty_scalar(parser, event,
-                token->start_mark);
-    }
-    else {
-        return yaml_parser_parse_node(parser, event, 1, 0);
-    }
-}
-
-/*
- * Parse the productions:
- * implicit_document    ::= block_node DOCUMENT-END*
- *                                     *************
- * explicit_document    ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
- *                                                                *************
- */
-
-static int
-yaml_parser_parse_document_end(yaml_parser_t *parser, yaml_event_t *event)
-{
-    yaml_token_t *token;
-    yaml_mark_t start_mark, end_mark;
-    int implicit = 1;
-
-    token = PEEK_TOKEN(parser);
-    if (!token) return 0;
-
-    start_mark = end_mark = token->start_mark;
-
-    if (token->type == YAML_DOCUMENT_END_TOKEN) {
-        end_mark = token->end_mark;
-        SKIP_TOKEN(parser);
-        implicit = 0;
-    }
-
-    while (!STACK_EMPTY(parser, parser->tag_directives)) {
-        yaml_tag_directive_t tag_directive = POP(parser, parser->tag_directives);
-        yaml_free(tag_directive.handle);
-        yaml_free(tag_directive.prefix);
-    }
-
-    parser->state = YAML_PARSE_DOCUMENT_START_STATE;
-    DOCUMENT_END_EVENT_INIT(*event, implicit, start_mark, end_mark);
-
-    return 1;
-}
-
-/*
- * Parse the productions:
- * block_node_or_indentless_sequence    ::=
- *                          ALIAS
- *                          *****
- *                          | properties (block_content | indentless_block_sequence)?
- *                            **********  *
- *                          | block_content | indentless_block_sequence
- *                            *
- * block_node           ::= ALIAS
- *                          *****
- *                          | properties block_content?
- *                            ********** *
- *                          | block_content
- *                            *
- * flow_node            ::= ALIAS
- *                          *****
- *                          | properties flow_content?
- *                            ********** *
- *                          | flow_content
- *                            *
- * properties           ::= TAG ANCHOR? | ANCHOR TAG?
- *                          *************************
- * block_content        ::= block_collection | flow_collection | SCALAR
- *                                                               ******
- * flow_content         ::= flow_collection | SCALAR
- *                                            ******
- */
-
-static int
-yaml_parser_parse_node(yaml_parser_t *parser, yaml_event_t *event,
-        int block, int indentless_sequence)
-{
-    yaml_token_t *token;
-    yaml_char_t *anchor = NULL;
-    yaml_char_t *tag_handle = NULL;
-    yaml_char_t *tag_suffix = NULL;
-    yaml_char_t *tag = NULL;
-    yaml_mark_t start_mark, end_mark, tag_mark;
-    int implicit;
-
-    token = PEEK_TOKEN(parser);
-    if (!token) return 0;
-
-    if (token->type == YAML_ALIAS_TOKEN)
-    {
-        parser->state = POP(parser, parser->states);
-        ALIAS_EVENT_INIT(*event, token->data.alias.value,
-                token->start_mark, token->end_mark);
-        SKIP_TOKEN(parser);
-        return 1;
-    }
-
-    else
-    {
-        start_mark = end_mark = token->start_mark;
-
-        if (token->type == YAML_ANCHOR_TOKEN)
-        {
-            anchor = token->data.anchor.value;
-            start_mark = token->start_mark;
-            end_mark = token->end_mark;
-            SKIP_TOKEN(parser);
-            token = PEEK_TOKEN(parser);
-            if (!token) goto error;
-            if (token->type == YAML_TAG_TOKEN)
-            {
-                tag_handle = token->data.tag.handle;
-                tag_suffix = token->data.tag.suffix;
-                tag_mark = token->start_mark;
-                end_mark = token->end_mark;
-                SKIP_TOKEN(parser);
-                token = PEEK_TOKEN(parser);
-                if (!token) goto error;
-            }
-        }
-        else if (token->type == YAML_TAG_TOKEN)
-        {
-            tag_handle = token->data.tag.handle;
-            tag_suffix = token->data.tag.suffix;
-            start_mark = tag_mark = token->start_mark;
-            end_mark = token->end_mark;
-            SKIP_TOKEN(parser);
-            token = PEEK_TOKEN(parser);
-            if (!token) goto error;
-            if (token->type == YAML_ANCHOR_TOKEN)
-            {
-                anchor = token->data.anchor.value;
-                end_mark = token->end_mark;
-                SKIP_TOKEN(parser);
-                token = PEEK_TOKEN(parser);
-                if (!token) goto error;
-            }
-        }
-
-        if (tag_handle) {
-            if (!*tag_handle) {
-                tag = tag_suffix;
-                yaml_free(tag_handle);
-                tag_handle = tag_suffix = NULL;
-            }
-            else {
-                yaml_tag_directive_t *tag_directive;
-                for (tag_directive = parser->tag_directives.start;
-                        tag_directive != parser->tag_directives.top;
-                        tag_directive ++) {
-                    if (strcmp((char *)tag_directive->handle, (char *)tag_handle) == 0) {
-                        size_t prefix_len = strlen((char *)tag_directive->prefix);
-                        size_t suffix_len = strlen((char *)tag_suffix);
-                        tag = yaml_malloc(prefix_len+suffix_len+1);
-                        if (!tag) {
-                            parser->error = YAML_MEMORY_ERROR;
-                            goto error;
-                        }
-                        memcpy(tag, tag_directive->prefix, prefix_len);
-                        memcpy(tag+prefix_len, tag_suffix, suffix_len);
-                        tag[prefix_len+suffix_len] = '\0';
-                        yaml_free(tag_handle);
-                        yaml_free(tag_suffix);
-                        tag_handle = tag_suffix = NULL;
-                        break;
-                    }
-                }
-                if (!tag) {
-                    yaml_parser_set_parser_error_context(parser,
-                            "while parsing a node", start_mark,
-                            "found undefined tag handle", tag_mark);
-                    goto error;
-                }
-            }
-        }
-
-        implicit = (!tag || !*tag);
-        if (indentless_sequence && token->type == YAML_BLOCK_ENTRY_TOKEN) {
-            end_mark = token->end_mark;
-            parser->state = YAML_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE;
-            SEQUENCE_START_EVENT_INIT(*event, anchor, tag, implicit,
-                    YAML_BLOCK_SEQUENCE_STYLE, start_mark, end_mark);
-            return 1;
-        }
-        else {
-            if (token->type == YAML_SCALAR_TOKEN) {
-                int plain_implicit = 0;
-                int quoted_implicit = 0;
-                end_mark = token->end_mark;
-                if ((token->data.scalar.style == YAML_PLAIN_SCALAR_STYLE && !tag)
-                        || (tag && strcmp((char *)tag, "!") == 0)) {
-                    plain_implicit = 1;
-                }
-                else if (!tag) {
-                    quoted_implicit = 1;
-                }
-                parser->state = POP(parser, parser->states);
-                SCALAR_EVENT_INIT(*event, anchor, tag,
-                        token->data.scalar.value, token->data.scalar.length,
-                        plain_implicit, quoted_implicit,
-                        token->data.scalar.style, start_mark, end_mark);
-                SKIP_TOKEN(parser);
-                return 1;
-            }
-            else if (token->type == YAML_FLOW_SEQUENCE_START_TOKEN) {
-                end_mark = token->end_mark;
-                parser->state = YAML_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE;
-                SEQUENCE_START_EVENT_INIT(*event, anchor, tag, implicit,
-                        YAML_FLOW_SEQUENCE_STYLE, start_mark, end_mark);
-                return 1;
-            }
-            else if (token->type == YAML_FLOW_MAPPING_START_TOKEN) {
-                end_mark = token->end_mark;
-                parser->state = YAML_PARSE_FLOW_MAPPING_FIRST_KEY_STATE;
-                MAPPING_START_EVENT_INIT(*event, anchor, tag, implicit,
-                        YAML_FLOW_MAPPING_STYLE, start_mark, end_mark);
-                return 1;
-            }
-            else if (block && token->type == YAML_BLOCK_SEQUENCE_START_TOKEN) {
-                end_mark = token->end_mark;
-                parser->state = YAML_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE;
-                SEQUENCE_START_EVENT_INIT(*event, anchor, tag, implicit,
-                        YAML_BLOCK_SEQUENCE_STYLE, start_mark, end_mark);
-                return 1;
-            }
-            else if (block && token->type == YAML_BLOCK_MAPPING_START_TOKEN) {
-                end_mark = token->end_mark;
-                parser->state = YAML_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE;
-                MAPPING_START_EVENT_INIT(*event, anchor, tag, implicit,
-                        YAML_BLOCK_MAPPING_STYLE, start_mark, end_mark);
-                return 1;
-            }
-            else if (anchor || tag) {
-                yaml_char_t *value = yaml_malloc(1);
-                if (!value) {
-                    parser->error = YAML_MEMORY_ERROR;
-                    goto error;
-                }
-                value[0] = '\0';
-                parser->state = POP(parser, parser->states);
-                SCALAR_EVENT_INIT(*event, anchor, tag, value, 0,
-                        implicit, 0, YAML_PLAIN_SCALAR_STYLE,
-                        start_mark, end_mark);
-                return 1;
-            }
-            else {
-                yaml_parser_set_parser_error_context(parser,
-                        (block ? "while parsing a block node"
-                         : "while parsing a flow node"), start_mark,
-                        "did not find expected node content", token->start_mark);
-                goto error;
-            }
-        }
-    }
-
-error:
-    yaml_free(anchor);
-    yaml_free(tag_handle);
-    yaml_free(tag_suffix);
-    yaml_free(tag);
-
-    return 0;
-}
-
-/*
- * Parse the productions:
- * block_sequence ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END
- *                    ********************  *********** *             *********
- */
-
-static int
-yaml_parser_parse_block_sequence_entry(yaml_parser_t *parser,
-        yaml_event_t *event, int first)
-{
-    yaml_token_t *token;
-
-    if (first) {
-        token = PEEK_TOKEN(parser);
-        if (!PUSH(parser, parser->marks, token->start_mark))
-            return 0;
-        SKIP_TOKEN(parser);
-    }
-
-    token = PEEK_TOKEN(parser);
-    if (!token) return 0;
-
-    if (token->type == YAML_BLOCK_ENTRY_TOKEN)
-    {
-        yaml_mark_t mark = token->end_mark;
-        SKIP_TOKEN(parser);
-        token = PEEK_TOKEN(parser);
-        if (!token) return 0;
-        if (token->type != YAML_BLOCK_ENTRY_TOKEN &&
-                token->type != YAML_BLOCK_END_TOKEN) {
-            if (!PUSH(parser, parser->states,
-                        YAML_PARSE_BLOCK_SEQUENCE_ENTRY_STATE))
-                return 0;
-            return yaml_parser_parse_node(parser, event, 1, 0);
-        }
-        else {
-            parser->state = YAML_PARSE_BLOCK_SEQUENCE_ENTRY_STATE;
-            return yaml_parser_process_empty_scalar(parser, event, mark);
-        }
-    }
-
-    else if (token->type == YAML_BLOCK_END_TOKEN)
-    {
-        yaml_mark_t dummy_mark;     /* Used to eliminate a compiler warning. */
-        parser->state = POP(parser, parser->states);
-        dummy_mark = POP(parser, parser->marks);
-        SEQUENCE_END_EVENT_INIT(*event, token->start_mark, token->end_mark);
-        SKIP_TOKEN(parser);
-        return 1;
-    }
-
-    else
-    {
-        return yaml_parser_set_parser_error_context(parser,
-                "while parsing a block collection", POP(parser, parser->marks),
-                "did not find expected '-' indicator", token->start_mark);
-    }
-}
-
-/*
- * Parse the productions:
- * indentless_sequence  ::= (BLOCK-ENTRY block_node?)+
- *                           *********** *
- */
-
-static int
-yaml_parser_parse_indentless_sequence_entry(yaml_parser_t *parser,
-        yaml_event_t *event)
-{
-    yaml_token_t *token;
-
-    token = PEEK_TOKEN(parser);
-    if (!token) return 0;
-
-    if (token->type == YAML_BLOCK_ENTRY_TOKEN)
-    {
-        yaml_mark_t mark = token->end_mark;
-        SKIP_TOKEN(parser);
-        token = PEEK_TOKEN(parser);
-        if (!token) return 0;
-        if (token->type != YAML_BLOCK_ENTRY_TOKEN &&
-                token->type != YAML_KEY_TOKEN &&
-                token->type != YAML_VALUE_TOKEN &&
-                token->type != YAML_BLOCK_END_TOKEN) {
-            if (!PUSH(parser, parser->states,
-                        YAML_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE))
-                return 0;
-            return yaml_parser_parse_node(parser, event, 1, 0);
-        }
-        else {
-            parser->state = YAML_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE;
-            return yaml_parser_process_empty_scalar(parser, event, mark);
-        }
-    }
-
-    else
-    {
-        parser->state = POP(parser, parser->states);
-        SEQUENCE_END_EVENT_INIT(*event, token->start_mark, token->start_mark);
-        return 1;
-    }
-}
-
-/*
- * Parse the productions:
- * block_mapping        ::= BLOCK-MAPPING_START
- *                          *******************
- *                          ((KEY block_node_or_indentless_sequence?)?
- *                            *** *
- *                          (VALUE block_node_or_indentless_sequence?)?)*
- *
- *                          BLOCK-END
- *                          *********
- */
-
-static int
-yaml_parser_parse_block_mapping_key(yaml_parser_t *parser,
-        yaml_event_t *event, int first)
-{
-    yaml_token_t *token;
-
-    if (first) {
-        token = PEEK_TOKEN(parser);
-        if (!PUSH(parser, parser->marks, token->start_mark))
-            return 0;
-        SKIP_TOKEN(parser);
-    }
-
-    token = PEEK_TOKEN(parser);
-    if (!token) return 0;
-
-    if (token->type == YAML_KEY_TOKEN)
-    {
-        yaml_mark_t mark = token->end_mark;
-        SKIP_TOKEN(parser);
-        token = PEEK_TOKEN(parser);
-        if (!token) return 0;
-        if (token->type != YAML_KEY_TOKEN &&
-                token->type != YAML_VALUE_TOKEN &&
-                token->type != YAML_BLOCK_END_TOKEN) {
-            if (!PUSH(parser, parser->states,
-                        YAML_PARSE_BLOCK_MAPPING_VALUE_STATE))
-                return 0;
-            return yaml_parser_parse_node(parser, event, 1, 1);
-        }
-        else {
-            parser->state = YAML_PARSE_BLOCK_MAPPING_VALUE_STATE;
-            return yaml_parser_process_empty_scalar(parser, event, mark);
-        }
-    }
-
-    else if (token->type == YAML_BLOCK_END_TOKEN)
-    {
-        yaml_mark_t dummy_mark;     /* Used to eliminate a compiler warning. */
-        parser->state = POP(parser, parser->states);
-        dummy_mark = POP(parser, parser->marks);
-        MAPPING_END_EVENT_INIT(*event, token->start_mark, token->end_mark);
-        SKIP_TOKEN(parser);
-        return 1;
-    }
-
-    else
-    {
-        return yaml_parser_set_parser_error_context(parser,
-                "while parsing a block mapping", POP(parser, parser->marks),
-                "did not find expected key", token->start_mark);
-    }
-}
-
-/*
- * Parse the productions:
- * block_mapping        ::= BLOCK-MAPPING_START
- *
- *                          ((KEY block_node_or_indentless_sequence?)?
- *
- *                          (VALUE block_node_or_indentless_sequence?)?)*
- *                           ***** *
- *                          BLOCK-END
- *
- */
-
-static int
-yaml_parser_parse_block_mapping_value(yaml_parser_t *parser,
-        yaml_event_t *event)
-{
-    yaml_token_t *token;
-
-    token = PEEK_TOKEN(parser);
-    if (!token) return 0;
-
-    if (token->type == YAML_VALUE_TOKEN)
-    {
-        yaml_mark_t mark = token->end_mark;
-        SKIP_TOKEN(parser);
-        token = PEEK_TOKEN(parser);
-        if (!token) return 0;
-        if (token->type != YAML_KEY_TOKEN &&
-                token->type != YAML_VALUE_TOKEN &&
-                token->type != YAML_BLOCK_END_TOKEN) {
-            if (!PUSH(parser, parser->states,
-                        YAML_PARSE_BLOCK_MAPPING_KEY_STATE))
-                return 0;
-            return yaml_parser_parse_node(parser, event, 1, 1);
-        }
-        else {
-            parser->state = YAML_PARSE_BLOCK_MAPPING_KEY_STATE;
-            return yaml_parser_process_empty_scalar(parser, event, mark);
-        }
-    }
-
-    else
-    {
-        parser->state = YAML_PARSE_BLOCK_MAPPING_KEY_STATE;
-        return yaml_parser_process_empty_scalar(parser, event, token->start_mark);
-    }
-}
-
-/*
- * Parse the productions:
- * flow_sequence        ::= FLOW-SEQUENCE-START
- *                          *******************
- *                          (flow_sequence_entry FLOW-ENTRY)*
- *                           *                   **********
- *                          flow_sequence_entry?
- *                          *
- *                          FLOW-SEQUENCE-END
- *                          *****************
- * flow_sequence_entry  ::= flow_node | KEY flow_node? (VALUE flow_node?)?
- *                          *
- */
-
-static int
-yaml_parser_parse_flow_sequence_entry(yaml_parser_t *parser,
-        yaml_event_t *event, int first)
-{
-    yaml_token_t *token;
-    yaml_mark_t dummy_mark;     /* Used to eliminate a compiler warning. */
-
-    if (first) {
-        token = PEEK_TOKEN(parser);
-        if (!PUSH(parser, parser->marks, token->start_mark))
-            return 0;
-        SKIP_TOKEN(parser);
-    }
-
-    token = PEEK_TOKEN(parser);
-    if (!token) return 0;
-
-    if (token->type != YAML_FLOW_SEQUENCE_END_TOKEN)
-    {
-        if (!first) {
-            if (token->type == YAML_FLOW_ENTRY_TOKEN) {
-                SKIP_TOKEN(parser);
-                token = PEEK_TOKEN(parser);
-                if (!token) return 0;
-            }
-            else {
-                return yaml_parser_set_parser_error_context(parser,
-                        "while parsing a flow sequence", POP(parser, parser->marks),
-                        "did not find expected ',' or ']'", token->start_mark);
-            }
-        }
-
-        if (token->type == YAML_KEY_TOKEN) {
-            parser->state = YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE;
-            MAPPING_START_EVENT_INIT(*event, NULL, NULL,
-                    1, YAML_FLOW_MAPPING_STYLE,
-                    token->start_mark, token->end_mark);
-            SKIP_TOKEN(parser);
-            return 1;
-        }
-
-        else if (token->type != YAML_FLOW_SEQUENCE_END_TOKEN) {
-            if (!PUSH(parser, parser->states,
-                        YAML_PARSE_FLOW_SEQUENCE_ENTRY_STATE))
-                return 0;
-            return yaml_parser_parse_node(parser, event, 0, 0);
-        }
-    }
-
-    parser->state = POP(parser, parser->states);
-    dummy_mark = POP(parser, parser->marks);
-    SEQUENCE_END_EVENT_INIT(*event, token->start_mark, token->end_mark);
-    SKIP_TOKEN(parser);
-    return 1;
-}
-
-/*
- * Parse the productions:
- * flow_sequence_entry  ::= flow_node | KEY flow_node? (VALUE flow_node?)?
- *                                      *** *
- */
-
-static int
-yaml_parser_parse_flow_sequence_entry_mapping_key(yaml_parser_t *parser,
-        yaml_event_t *event)
-{
-    yaml_token_t *token;
-
-    token = PEEK_TOKEN(parser);
-    if (!token) return 0;
-
-    if (token->type != YAML_VALUE_TOKEN && token->type != YAML_FLOW_ENTRY_TOKEN
-            && token->type != YAML_FLOW_SEQUENCE_END_TOKEN) {
-        if (!PUSH(parser, parser->states,
-                    YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE))
-            return 0;
-        return yaml_parser_parse_node(parser, event, 0, 0);
-    }
-    else {
-        yaml_mark_t mark = token->end_mark;
-        SKIP_TOKEN(parser);
-        parser->state = YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE;
-        return yaml_parser_process_empty_scalar(parser, event, mark);
-    }
-}
-
-/*
- * Parse the productions:
- * flow_sequence_entry  ::= flow_node | KEY flow_node? (VALUE flow_node?)?
- *                                                      ***** *
- */
-
-static int
-yaml_parser_parse_flow_sequence_entry_mapping_value(yaml_parser_t *parser,
-        yaml_event_t *event)
-{
-    yaml_token_t *token;
-
-    token = PEEK_TOKEN(parser);
-    if (!token) return 0;
-
-    if (token->type == YAML_VALUE_TOKEN) {
-        SKIP_TOKEN(parser);
-        token = PEEK_TOKEN(parser);
-        if (!token) return 0;
-        if (token->type != YAML_FLOW_ENTRY_TOKEN
-                && token->type != YAML_FLOW_SEQUENCE_END_TOKEN) {
-            if (!PUSH(parser, parser->states,
-                        YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE))
-                return 0;
-            return yaml_parser_parse_node(parser, event, 0, 0);
-        }
-    }
-    parser->state = YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE;
-    return yaml_parser_process_empty_scalar(parser, event, token->start_mark);
-}
-
-/*
- * Parse the productions:
- * flow_sequence_entry  ::= flow_node | KEY flow_node? (VALUE flow_node?)?
- *                                                                      *
- */
-
-static int
-yaml_parser_parse_flow_sequence_entry_mapping_end(yaml_parser_t *parser,
-        yaml_event_t *event)
-{
-    yaml_token_t *token;
-
-    token = PEEK_TOKEN(parser);
-    if (!token) return 0;
-
-    parser->state = YAML_PARSE_FLOW_SEQUENCE_ENTRY_STATE;
-
-    MAPPING_END_EVENT_INIT(*event, token->start_mark, token->start_mark);
-    return 1;
-}
-
-/*
- * Parse the productions:
- * flow_mapping         ::= FLOW-MAPPING-START
- *                          ******************
- *                          (flow_mapping_entry FLOW-ENTRY)*
- *                           *                  **********
- *                          flow_mapping_entry?
- *                          ******************
- *                          FLOW-MAPPING-END
- *                          ****************
- * flow_mapping_entry   ::= flow_node | KEY flow_node? (VALUE flow_node?)?
- *                          *           *** *
- */
-
-static int
-yaml_parser_parse_flow_mapping_key(yaml_parser_t *parser,
-        yaml_event_t *event, int first)
-{
-    yaml_token_t *token;
-    yaml_mark_t dummy_mark;     /* Used to eliminate a compiler warning. */
-
-    if (first) {
-        token = PEEK_TOKEN(parser);
-        if (!PUSH(parser, parser->marks, token->start_mark))
-            return 0;
-        SKIP_TOKEN(parser);
-    }
-
-    token = PEEK_TOKEN(parser);
-    if (!token) return 0;
-
-    if (token->type != YAML_FLOW_MAPPING_END_TOKEN)
-    {
-        if (!first) {
-            if (token->type == YAML_FLOW_ENTRY_TOKEN) {
-                SKIP_TOKEN(parser);
-                token = PEEK_TOKEN(parser);
-                if (!token) return 0;
-            }
-            else {
-                return yaml_parser_set_parser_error_context(parser,
-                        "while parsing a flow mapping", POP(parser, parser->marks),
-                        "did not find expected ',' or '}'", token->start_mark);
-            }
-        }
-
-        if (token->type == YAML_KEY_TOKEN) {
-            SKIP_TOKEN(parser);
-            token = PEEK_TOKEN(parser);
-            if (!token) return 0;
-            if (token->type != YAML_VALUE_TOKEN
-                    && token->type != YAML_FLOW_ENTRY_TOKEN
-                    && token->type != YAML_FLOW_MAPPING_END_TOKEN) {
-                if (!PUSH(parser, parser->states,
-                            YAML_PARSE_FLOW_MAPPING_VALUE_STATE))
-                    return 0;
-                return yaml_parser_parse_node(parser, event, 0, 0);
-            }
-            else {
-                parser->state = YAML_PARSE_FLOW_MAPPING_VALUE_STATE;
-                return yaml_parser_process_empty_scalar(parser, event,
-                        token->start_mark);
-            }
-        }
-        else if (token->type != YAML_FLOW_MAPPING_END_TOKEN) {
-            if (!PUSH(parser, parser->states,
-                        YAML_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE))
-                return 0;
-            return yaml_parser_parse_node(parser, event, 0, 0);
-        }
-    }
-
-    parser->state = POP(parser, parser->states);
-    dummy_mark = POP(parser, parser->marks);
-    MAPPING_END_EVENT_INIT(*event, token->start_mark, token->end_mark);
-    SKIP_TOKEN(parser);
-    return 1;
-}
-
-/*
- * Parse the productions:
- * flow_mapping_entry   ::= flow_node | KEY flow_node? (VALUE flow_node?)?
- *                                   *                  ***** *
- */
-
-static int
-yaml_parser_parse_flow_mapping_value(yaml_parser_t *parser,
-        yaml_event_t *event, int empty)
-{
-    yaml_token_t *token;
-
-    token = PEEK_TOKEN(parser);
-    if (!token) return 0;
-
-    if (empty) {
-        parser->state = YAML_PARSE_FLOW_MAPPING_KEY_STATE;
-        return yaml_parser_process_empty_scalar(parser, event,
-                token->start_mark);
-    }
-
-    if (token->type == YAML_VALUE_TOKEN) {
-        SKIP_TOKEN(parser);
-        token = PEEK_TOKEN(parser);
-        if (!token) return 0;
-        if (token->type != YAML_FLOW_ENTRY_TOKEN
-                && token->type != YAML_FLOW_MAPPING_END_TOKEN) {
-            if (!PUSH(parser, parser->states,
-                        YAML_PARSE_FLOW_MAPPING_KEY_STATE))
-                return 0;
-            return yaml_parser_parse_node(parser, event, 0, 0);
-        }
-    }
-
-    parser->state = YAML_PARSE_FLOW_MAPPING_KEY_STATE;
-    return yaml_parser_process_empty_scalar(parser, event, token->start_mark);
-}
-
-/*
- * Generate an empty scalar event.
- */
-
-static int
-yaml_parser_process_empty_scalar(yaml_parser_t *parser, yaml_event_t *event,
-        yaml_mark_t mark)
-{
-    yaml_char_t *value;
-
-    value = yaml_malloc(1);
-    if (!value) {
-        parser->error = YAML_MEMORY_ERROR;
-        return 0;
-    }
-    value[0] = '\0';
-
-    SCALAR_EVENT_INIT(*event, NULL, NULL, value, 0,
-            1, 0, YAML_PLAIN_SCALAR_STYLE, mark, mark);
-
-    return 1;
-}
-
-/*
- * Parse directives.
- */
-
-static int
-yaml_parser_process_directives(yaml_parser_t *parser,
-        yaml_version_directive_t **version_directive_ref,
-        yaml_tag_directive_t **tag_directives_start_ref,
-        yaml_tag_directive_t **tag_directives_end_ref)
-{
-    yaml_tag_directive_t default_tag_directives[] = {
-        {(yaml_char_t *)"!", (yaml_char_t *)"!"},
-        {(yaml_char_t *)"!!", (yaml_char_t *)"tag:yaml.org,2002:"},
-        {NULL, NULL}
-    };
-    yaml_tag_directive_t *default_tag_directive;
-    yaml_version_directive_t *version_directive = NULL;
-    struct {
-        yaml_tag_directive_t *start;
-        yaml_tag_directive_t *end;
-        yaml_tag_directive_t *top;
-    } tag_directives = { NULL, NULL, NULL };
-    yaml_token_t *token;
-
-    if (!STACK_INIT(parser, tag_directives, INITIAL_STACK_SIZE))
-        goto error;
-
-    token = PEEK_TOKEN(parser);
-    if (!token) goto error;
-
-    while (token->type == YAML_VERSION_DIRECTIVE_TOKEN ||
-            token->type == YAML_TAG_DIRECTIVE_TOKEN)
-    {
-        if (token->type == YAML_VERSION_DIRECTIVE_TOKEN) {
-            if (version_directive) {
-                yaml_parser_set_parser_error(parser,
-                        "found duplicate %YAML directive", token->start_mark);
-                goto error;
-            }
-            if (token->data.version_directive.major != 1
-                    || token->data.version_directive.minor != 1) {
-                yaml_parser_set_parser_error(parser,
-                        "found incompatible YAML document", token->start_mark);
-                goto error;
-            }
-            version_directive = yaml_malloc(sizeof(yaml_version_directive_t));
-            if (!version_directive) {
-                parser->error = YAML_MEMORY_ERROR;
-                goto error;
-            }
-            version_directive->major = token->data.version_directive.major;
-            version_directive->minor = token->data.version_directive.minor;
-        }
-
-        else if (token->type == YAML_TAG_DIRECTIVE_TOKEN) {
-            yaml_tag_directive_t value;
-            value.handle = token->data.tag_directive.handle;
-            value.prefix = token->data.tag_directive.prefix;
-
-            if (!yaml_parser_append_tag_directive(parser, value, 0,
-                        token->start_mark))
-                goto error;
-            if (!PUSH(parser, tag_directives, value))
-                goto error;
-        }
-
-        SKIP_TOKEN(parser);
-        token = PEEK_TOKEN(parser);
-        if (!token) goto error;
-    }
-    
-    for (default_tag_directive = default_tag_directives;
-            default_tag_directive->handle; default_tag_directive++) {
-        if (!yaml_parser_append_tag_directive(parser, *default_tag_directive, 1,
-                    token->start_mark))
-            goto error;
-    }
-
-    if (version_directive_ref) {
-        *version_directive_ref = version_directive;
-    }
-    if (tag_directives_start_ref) {
-        if (STACK_EMPTY(parser, tag_directives)) {
-            *tag_directives_start_ref = *tag_directives_end_ref = NULL;
-            STACK_DEL(parser, tag_directives);
-        }
-        else {
-            *tag_directives_start_ref = tag_directives.start;
-            *tag_directives_end_ref = tag_directives.top;
-        }
-    }
-    else {
-        STACK_DEL(parser, tag_directives);
-    }
-
-    return 1;
-
-error:
-    yaml_free(version_directive);
-    while (!STACK_EMPTY(parser, tag_directives)) {
-        yaml_tag_directive_t tag_directive = POP(parser, tag_directives);
-        yaml_free(tag_directive.handle);
-        yaml_free(tag_directive.prefix);
-    }
-    STACK_DEL(parser, tag_directives);
-    return 0;
-}
-
-/*
- * Append a tag directive to the directives stack.
- */
-
-static int
-yaml_parser_append_tag_directive(yaml_parser_t *parser,
-        yaml_tag_directive_t value, int allow_duplicates, yaml_mark_t mark)
-{
-    yaml_tag_directive_t *tag_directive;
-    yaml_tag_directive_t copy = { NULL, NULL };
-
-    for (tag_directive = parser->tag_directives.start;
-            tag_directive != parser->tag_directives.top; tag_directive ++) {
-        if (strcmp((char *)value.handle, (char *)tag_directive->handle) == 0) {
-            if (allow_duplicates)
-                return 1;
-            return yaml_parser_set_parser_error(parser,
-                    "found duplicate %TAG directive", mark);
-        }
-    }
-
-    copy.handle = yaml_strdup(value.handle);
-    copy.prefix = yaml_strdup(value.prefix);
-    if (!copy.handle || !copy.prefix) {
-        parser->error = YAML_MEMORY_ERROR;
-        goto error;
-    }
-
-    if (!PUSH(parser, parser->tag_directives, copy))
-        goto error;
-
-    return 1;
-
-error:
-    yaml_free(copy.handle);
-    yaml_free(copy.prefix);
-    return 0;
-}
-
diff --git a/parserc.go b/parserc.go
new file mode 100644
index 0000000..0fdfa4e
--- /dev/null
+++ b/parserc.go
@@ -0,0 +1,1096 @@
+package goyaml
+
+import (
+	"bytes"
+)
+
+// The parser implements the following grammar:
+//
+// stream               ::= STREAM-START implicit_document? explicit_document* STREAM-END
+// implicit_document    ::= block_node DOCUMENT-END*
+// explicit_document    ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
+// block_node_or_indentless_sequence    ::=
+//                          ALIAS
+//                          | properties (block_content | indentless_block_sequence)?
+//                          | block_content
+//                          | indentless_block_sequence
+// block_node           ::= ALIAS
+//                          | properties block_content?
+//                          | block_content
+// flow_node            ::= ALIAS
+//                          | properties flow_content?
+//                          | flow_content
+// properties           ::= TAG ANCHOR? | ANCHOR TAG?
+// block_content        ::= block_collection | flow_collection | SCALAR
+// flow_content         ::= flow_collection | SCALAR
+// block_collection     ::= block_sequence | block_mapping
+// flow_collection      ::= flow_sequence | flow_mapping
+// block_sequence       ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END
+// indentless_sequence  ::= (BLOCK-ENTRY block_node?)+
+// block_mapping        ::= BLOCK-MAPPING_START
+//                          ((KEY block_node_or_indentless_sequence?)?
+//                          (VALUE block_node_or_indentless_sequence?)?)*
+//                          BLOCK-END
+// flow_sequence        ::= FLOW-SEQUENCE-START
+//                          (flow_sequence_entry FLOW-ENTRY)*
+//                          flow_sequence_entry?
+//                          FLOW-SEQUENCE-END
+// flow_sequence_entry  ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+// flow_mapping         ::= FLOW-MAPPING-START
+//                          (flow_mapping_entry FLOW-ENTRY)*
+//                          flow_mapping_entry?
+//                          FLOW-MAPPING-END
+// flow_mapping_entry   ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+
+// Peek the next token in the token queue.
+func peek_token(parser *yaml_parser_t) *yaml_token_t {
+	if parser.token_available || yaml_parser_fetch_more_tokens(parser) {
+		return &parser.tokens[parser.tokens_head]
+	}
+	return nil
+}
+
+// Remove the next token from the queue (must be called after peek_token).
+func skip_token(parser *yaml_parser_t) {
+	parser.token_available = false
+	parser.tokens_parsed++
+	parser.stream_end_produced = parser.tokens[parser.tokens_head].typ == yaml_STREAM_END_TOKEN
+	parser.tokens_head++
+}
+
+// Get the next event.
+func yaml_parser_parse(parser *yaml_parser_t, event *yaml_event_t) bool {
+	// Erase the event object.
+	*event = yaml_event_t{}
+
+	// No events after the end of the stream or error.
+	if parser.stream_end_produced || parser.error != yaml_NO_ERROR || parser.state == yaml_PARSE_END_STATE {
+		return true
+	}
+
+	// Generate the next event.
+	return yaml_parser_state_machine(parser, event)
+}
+
+// Set parser error.
+func yaml_parser_set_parser_error(parser *yaml_parser_t, problem string, problem_mark yaml_mark_t) bool {
+	parser.error = yaml_PARSER_ERROR
+	parser.problem = problem
+	parser.problem_mark = problem_mark
+	return false
+}
+
+func yaml_parser_set_parser_error_context(parser *yaml_parser_t, context string, context_mark yaml_mark_t, problem string, problem_mark yaml_mark_t) bool {
+	parser.error = yaml_PARSER_ERROR
+	parser.context = context
+	parser.context_mark = context_mark
+	parser.problem = problem
+	parser.problem_mark = problem_mark
+	return false
+}
+
+// State dispatcher.
+func yaml_parser_state_machine(parser *yaml_parser_t, event *yaml_event_t) bool {
+	//trace("yaml_parser_state_machine", "state:", parser.state.String())
+
+	switch parser.state {
+	case yaml_PARSE_STREAM_START_STATE:
+		return yaml_parser_parse_stream_start(parser, event)
+
+	case yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE:
+		return yaml_parser_parse_document_start(parser, event, true)
+
+	case yaml_PARSE_DOCUMENT_START_STATE:
+		return yaml_parser_parse_document_start(parser, event, false)
+
+	case yaml_PARSE_DOCUMENT_CONTENT_STATE:
+		return yaml_parser_parse_document_content(parser, event)
+
+	case yaml_PARSE_DOCUMENT_END_STATE:
+		return yaml_parser_parse_document_end(parser, event)
+
+	case yaml_PARSE_BLOCK_NODE_STATE:
+		return yaml_parser_parse_node(parser, event, true, false)
+
+	case yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE:
+		return yaml_parser_parse_node(parser, event, true, true)
+
+	case yaml_PARSE_FLOW_NODE_STATE:
+		return yaml_parser_parse_node(parser, event, false, false)
+
+	case yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE:
+		return yaml_parser_parse_block_sequence_entry(parser, event, true)
+
+	case yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE:
+		return yaml_parser_parse_block_sequence_entry(parser, event, false)
+
+	case yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE:
+		return yaml_parser_parse_indentless_sequence_entry(parser, event)
+
+	case yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE:
+		return yaml_parser_parse_block_mapping_key(parser, event, true)
+
+	case yaml_PARSE_BLOCK_MAPPING_KEY_STATE:
+		return yaml_parser_parse_block_mapping_key(parser, event, false)
+
+	case yaml_PARSE_BLOCK_MAPPING_VALUE_STATE:
+		return yaml_parser_parse_block_mapping_value(parser, event)
+
+	case yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE:
+		return yaml_parser_parse_flow_sequence_entry(parser, event, true)
+
+	case yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE:
+		return yaml_parser_parse_flow_sequence_entry(parser, event, false)
+
+	case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE:
+		return yaml_parser_parse_flow_sequence_entry_mapping_key(parser, event)
+
+	case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE:
+		return yaml_parser_parse_flow_sequence_entry_mapping_value(parser, event)
+
+	case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE:
+		return yaml_parser_parse_flow_sequence_entry_mapping_end(parser, event)
+
+	case yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE:
+		return yaml_parser_parse_flow_mapping_key(parser, event, true)
+
+	case yaml_PARSE_FLOW_MAPPING_KEY_STATE:
+		return yaml_parser_parse_flow_mapping_key(parser, event, false)
+
+	case yaml_PARSE_FLOW_MAPPING_VALUE_STATE:
+		return yaml_parser_parse_flow_mapping_value(parser, event, false)
+
+	case yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE:
+		return yaml_parser_parse_flow_mapping_value(parser, event, true)
+
+	default:
+		panic("invalid parser state")
+	}
+	return false
+}
+
+// Parse the production:
+// stream   ::= STREAM-START implicit_document? explicit_document* STREAM-END
+//              ************
+func yaml_parser_parse_stream_start(parser *yaml_parser_t, event *yaml_event_t) bool {
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+	if token.typ != yaml_STREAM_START_TOKEN {
+		return yaml_parser_set_parser_error(parser, "did not find expected <stream-start>", token.start_mark)
+	}
+	parser.state = yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE
+	*event = yaml_event_t{
+		typ:        yaml_STREAM_START_EVENT,
+		start_mark: token.start_mark,
+		end_mark:   token.end_mark,
+		encoding:   token.encoding,
+	}
+	skip_token(parser)
+	return true
+}
+
+// Parse the productions:
+// implicit_document    ::= block_node DOCUMENT-END*
+//                          *
+// explicit_document    ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
+//                          *************************
+func yaml_parser_parse_document_start(parser *yaml_parser_t, event *yaml_event_t, implicit bool) bool {
+
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+
+	// Parse extra document end indicators.
+	if !implicit {
+		for token.typ == yaml_DOCUMENT_END_TOKEN {
+			skip_token(parser)
+			token = peek_token(parser)
+			if token == nil {
+				return false
+			}
+		}
+	}
+
+	if implicit && token.typ != yaml_VERSION_DIRECTIVE_TOKEN &&
+		token.typ != yaml_TAG_DIRECTIVE_TOKEN &&
+		token.typ != yaml_DOCUMENT_START_TOKEN &&
+		token.typ != yaml_STREAM_END_TOKEN {
+		// Parse an implicit document.
+		if !yaml_parser_process_directives(parser, nil, nil) {
+			return false
+		}
+		parser.states = append(parser.states, yaml_PARSE_DOCUMENT_END_STATE)
+		parser.state = yaml_PARSE_BLOCK_NODE_STATE
+
+		*event = yaml_event_t{
+			typ:        yaml_DOCUMENT_START_EVENT,
+			start_mark: token.start_mark,
+			end_mark:   token.end_mark,
+		}
+
+	} else if token.typ != yaml_STREAM_END_TOKEN {
+		// Parse an explicit document.
+		var version_directive *yaml_version_directive_t
+		var tag_directives []yaml_tag_directive_t
+		start_mark := token.start_mark
+		if !yaml_parser_process_directives(parser, &version_directive, &tag_directives) {
+			return false
+		}
+		token = peek_token(parser)
+		if token == nil {
+			return false
+		}
+		if token.typ != yaml_DOCUMENT_START_TOKEN {
+			yaml_parser_set_parser_error(parser,
+				"did not find expected <document start>", token.start_mark)
+			return false
+		}
+		parser.states = append(parser.states, yaml_PARSE_DOCUMENT_END_STATE)
+		parser.state = yaml_PARSE_DOCUMENT_CONTENT_STATE
+		end_mark := token.end_mark
+
+		*event = yaml_event_t{
+			typ:               yaml_DOCUMENT_START_EVENT,
+			start_mark:        start_mark,
+			end_mark:          end_mark,
+			version_directive: version_directive,
+			tag_directives:    tag_directives,
+			implicit:          false,
+		}
+		skip_token(parser)
+
+	} else {
+		// Parse the stream end.
+		parser.state = yaml_PARSE_END_STATE
+		*event = yaml_event_t{
+			typ:        yaml_STREAM_END_EVENT,
+			start_mark: token.start_mark,
+			end_mark:   token.end_mark,
+		}
+		skip_token(parser)
+	}
+
+	return true
+}
+
+// Parse the productions:
+// explicit_document    ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
+//                                                    ***********
+//
+func yaml_parser_parse_document_content(parser *yaml_parser_t, event *yaml_event_t) bool {
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+	if token.typ == yaml_VERSION_DIRECTIVE_TOKEN ||
+		token.typ == yaml_TAG_DIRECTIVE_TOKEN ||
+		token.typ == yaml_DOCUMENT_START_TOKEN ||
+		token.typ == yaml_DOCUMENT_END_TOKEN ||
+		token.typ == yaml_STREAM_END_TOKEN {
+		parser.state = parser.states[len(parser.states)-1]
+		parser.states = parser.states[:len(parser.states)-1]
+		return yaml_parser_process_empty_scalar(parser, event,
+			token.start_mark)
+	}
+	return yaml_parser_parse_node(parser, event, true, false)
+}
+
+// Parse the productions:
+// implicit_document    ::= block_node DOCUMENT-END*
+//                                     *************
+// explicit_document    ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
+//
+func yaml_parser_parse_document_end(parser *yaml_parser_t, event *yaml_event_t) bool {
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+
+	start_mark := token.start_mark
+	end_mark := token.start_mark
+
+	implicit := true
+	if token.typ == yaml_DOCUMENT_END_TOKEN {
+		end_mark = token.end_mark
+		skip_token(parser)
+		implicit = false
+	}
+
+	parser.tag_directives = parser.tag_directives[:0]
+
+	parser.state = yaml_PARSE_DOCUMENT_START_STATE
+	*event = yaml_event_t{
+		typ:        yaml_DOCUMENT_END_EVENT,
+		start_mark: start_mark,
+		end_mark:   end_mark,
+		implicit:   implicit,
+	}
+	return true
+}
+
+// Parse the productions:
+// block_node_or_indentless_sequence    ::=
+//                          ALIAS
+//                          *****
+//                          | properties (block_content | indentless_block_sequence)?
+//                            **********  *
+//                          | block_content | indentless_block_sequence
+//                            *
+// block_node           ::= ALIAS
+//                          *****
+//                          | properties block_content?
+//                            ********** *
+//                          | block_content
+//                            *
+// flow_node            ::= ALIAS
+//                          *****
+//                          | properties flow_content?
+//                            ********** *
+//                          | flow_content
+//                            *
+// properties           ::= TAG ANCHOR? | ANCHOR TAG?
+//                          *************************
+// block_content        ::= block_collection | flow_collection | SCALAR
+//                                                               ******
+// flow_content         ::= flow_collection | SCALAR
+//                                            ******
+func yaml_parser_parse_node(parser *yaml_parser_t, event *yaml_event_t, block, indentless_sequence bool) bool {
+	//defer trace("yaml_parser_parse_node", "block:", block, "indentless_sequence:", indentless_sequence)()
+
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+
+	if token.typ == yaml_ALIAS_TOKEN {
+		parser.state = parser.states[len(parser.states)-1]
+		parser.states = parser.states[:len(parser.states)-1]
+		*event = yaml_event_t{
+			typ:        yaml_ALIAS_EVENT,
+			start_mark: token.start_mark,
+			end_mark:   token.end_mark,
+			anchor:     token.value,
+		}
+		skip_token(parser)
+		return true
+	}
+
+	start_mark := token.start_mark
+	end_mark := token.start_mark
+
+	var tag_token bool
+	var tag_handle, tag_suffix, anchor []byte
+	var tag_mark yaml_mark_t
+	if token.typ == yaml_ANCHOR_TOKEN {
+		anchor = token.value
+		start_mark = token.start_mark
+		end_mark = token.end_mark
+		skip_token(parser)
+		token = peek_token(parser)
+		if token == nil {
+			return false
+		}
+		if token.typ == yaml_TAG_TOKEN {
+			tag_token = true
+			tag_handle = token.value
+			tag_suffix = token.suffix
+			tag_mark = token.start_mark
+			end_mark = token.end_mark
+			skip_token(parser)
+			token = peek_token(parser)
+			if token == nil {
+				return false
+			}
+		}
+	} else if token.typ == yaml_TAG_TOKEN {
+		tag_token = true
+		tag_handle = token.value
+		tag_suffix = token.suffix
+		start_mark = token.start_mark
+		tag_mark = token.start_mark
+		end_mark = token.end_mark
+		skip_token(parser)
+		token = peek_token(parser)
+		if token == nil {
+			return false
+		}
+		if token.typ == yaml_ANCHOR_TOKEN {
+			anchor = token.value
+			end_mark = token.end_mark
+			skip_token(parser)
+			token = peek_token(parser)
+			if token == nil {
+				return false
+			}
+		}
+	}
+
+	var tag []byte
+	if tag_token {
+		if len(tag_handle) == 0 {
+			tag = tag_suffix
+			tag_suffix = nil
+		} else {
+			for i := range parser.tag_directives {
+				if bytes.Equal(parser.tag_directives[i].handle, tag_handle) {
+					tag = append([]byte(nil), parser.tag_directives[i].prefix...)
+					tag = append(tag, tag_suffix...)
+					break
+				}
+			}
+			if len(tag) == 0 {
+				yaml_parser_set_parser_error_context(parser,
+					"while parsing a node", start_mark,
+					"found undefined tag handle", tag_mark)
+				return false
+			}
+		}
+	}
+
+	implicit := len(tag) == 0
+	if indentless_sequence && token.typ == yaml_BLOCK_ENTRY_TOKEN {
+		end_mark = token.end_mark
+		parser.state = yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE
+		*event = yaml_event_t{
+			typ:        yaml_SEQUENCE_START_EVENT,
+			start_mark: start_mark,
+			end_mark:   end_mark,
+			anchor:     anchor,
+			tag:        tag,
+			implicit:   implicit,
+			style:      yaml_style_t(yaml_BLOCK_SEQUENCE_STYLE),
+		}
+		return true
+	}
+	if token.typ == yaml_SCALAR_TOKEN {
+		var plain_implicit, quoted_implicit bool
+		end_mark = token.end_mark
+		if (len(tag) == 0 && token.style == yaml_PLAIN_SCALAR_STYLE) || (len(tag) == 1 && tag[0] == '!') {
+			plain_implicit = true
+		} else if len(tag) == 0 {
+			quoted_implicit = true
+		}
+		parser.state = parser.states[len(parser.states)-1]
+		parser.states = parser.states[:len(parser.states)-1]
+
+		*event = yaml_event_t{
+			typ:             yaml_SCALAR_EVENT,
+			start_mark:      start_mark,
+			end_mark:        end_mark,
+			anchor:          anchor,
+			tag:             tag,
+			value:           token.value,
+			implicit:        plain_implicit,
+			quoted_implicit: quoted_implicit,
+			style:           yaml_style_t(token.style),
+		}
+		skip_token(parser)
+		return true
+	}
+	if token.typ == yaml_FLOW_SEQUENCE_START_TOKEN {
+		// [Go] Some of the events below can be merged as they differ only on style.
+		end_mark = token.end_mark
+		parser.state = yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE
+		*event = yaml_event_t{
+			typ:        yaml_SEQUENCE_START_EVENT,
+			start_mark: start_mark,
+			end_mark:   end_mark,
+			anchor:     anchor,
+			tag:        tag,
+			implicit:   implicit,
+			style:      yaml_style_t(yaml_FLOW_SEQUENCE_STYLE),
+		}
+		return true
+	}
+	if token.typ == yaml_FLOW_MAPPING_START_TOKEN {
+		end_mark = token.end_mark
+		parser.state = yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE
+		*event = yaml_event_t{
+			typ:        yaml_MAPPING_START_EVENT,
+			start_mark: start_mark,
+			end_mark:   end_mark,
+			anchor:     anchor,
+			tag:        tag,
+			implicit:   implicit,
+			style:      yaml_style_t(yaml_FLOW_MAPPING_STYLE),
+		}
+		return true
+	}
+	if block && token.typ == yaml_BLOCK_SEQUENCE_START_TOKEN {
+		end_mark = token.end_mark
+		parser.state = yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE
+		*event = yaml_event_t{
+			typ:        yaml_SEQUENCE_START_EVENT,
+			start_mark: start_mark,
+			end_mark:   end_mark,
+			anchor:     anchor,
+			tag:        tag,
+			implicit:   implicit,
+			style:      yaml_style_t(yaml_BLOCK_SEQUENCE_STYLE),
+		}
+		return true
+	}
+	if block && token.typ == yaml_BLOCK_MAPPING_START_TOKEN {
+		end_mark = token.end_mark
+		parser.state = yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE
+		*event = yaml_event_t{
+			typ:        yaml_MAPPING_START_EVENT,
+			start_mark: start_mark,
+			end_mark:   end_mark,
+			anchor:     anchor,
+			tag:        tag,
+			implicit:   implicit,
+			style:      yaml_style_t(yaml_BLOCK_MAPPING_STYLE),
+		}
+		return true
+	}
+	if len(anchor) > 0 || len(tag) > 0 {
+		parser.state = parser.states[len(parser.states)-1]
+		parser.states = parser.states[:len(parser.states)-1]
+
+		*event = yaml_event_t{
+			typ:             yaml_SCALAR_EVENT,
+			start_mark:      start_mark,
+			end_mark:        end_mark,
+			anchor:          anchor,
+			tag:             tag,
+			implicit:        implicit,
+			quoted_implicit: false,
+			style:           yaml_style_t(yaml_PLAIN_SCALAR_STYLE),
+		}
+		return true
+	}
+
+	context := "while parsing a flow node"
+	if block {
+		context = "while parsing a block node"
+	}
+	yaml_parser_set_parser_error_context(parser, context, start_mark,
+		"did not find expected node content", token.start_mark)
+	return false
+}
+
+// Parse the productions:
+// block_sequence ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END
+//                    ********************  *********** *             *********
+//
+func yaml_parser_parse_block_sequence_entry(parser *yaml_parser_t, event *yaml_event_t, first bool) bool {
+	if first {
+		token := peek_token(parser)
+		parser.marks = append(parser.marks, token.start_mark)
+		skip_token(parser)
+	}
+
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+
+	if token.typ == yaml_BLOCK_ENTRY_TOKEN {
+		mark := token.end_mark
+		skip_token(parser)
+		token = peek_token(parser)
+		if token == nil {
+			return false
+		}
+		if token.typ != yaml_BLOCK_ENTRY_TOKEN && token.typ != yaml_BLOCK_END_TOKEN {
+			parser.states = append(parser.states, yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE)
+			return yaml_parser_parse_node(parser, event, true, false)
+		} else {
+			parser.state = yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE
+			return yaml_parser_process_empty_scalar(parser, event, mark)
+		}
+	}
+	if token.typ == yaml_BLOCK_END_TOKEN {
+		parser.state = parser.states[len(parser.states)-1]
+		parser.states = parser.states[:len(parser.states)-1]
+		parser.marks = parser.marks[:len(parser.marks)-1]
+
+		*event = yaml_event_t{
+			typ:        yaml_SEQUENCE_END_EVENT,
+			start_mark: token.start_mark,
+			end_mark:   token.end_mark,
+		}
+
+		skip_token(parser)
+		return true
+	}
+
+	context_mark := parser.marks[len(parser.marks)-1]
+	parser.marks = parser.marks[:len(parser.marks)-1]
+	return yaml_parser_set_parser_error_context(parser,
+		"while parsing a block collection", context_mark,
+		"did not find expected '-' indicator", token.start_mark)
+}
+
+// Parse the productions:
+// indentless_sequence  ::= (BLOCK-ENTRY block_node?)+
+//                           *********** *
+func yaml_parser_parse_indentless_sequence_entry(parser *yaml_parser_t, event *yaml_event_t) bool {
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+
+	if token.typ == yaml_BLOCK_ENTRY_TOKEN {
+		mark := token.end_mark
+		skip_token(parser)
+		token = peek_token(parser)
+		if token == nil {
+			return false
+		}
+		if token.typ != yaml_BLOCK_ENTRY_TOKEN &&
+			token.typ != yaml_KEY_TOKEN &&
+			token.typ != yaml_VALUE_TOKEN &&
+			token.typ != yaml_BLOCK_END_TOKEN {
+			parser.states = append(parser.states, yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE)
+			return yaml_parser_parse_node(parser, event, true, false)
+		}
+		parser.state = yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE
+		return yaml_parser_process_empty_scalar(parser, event, mark)
+	}
+	parser.state = parser.states[len(parser.states)-1]
+	parser.states = parser.states[:len(parser.states)-1]
+
+	*event = yaml_event_t{
+		typ:        yaml_SEQUENCE_END_EVENT,
+		start_mark: token.start_mark,
+		end_mark:   token.start_mark, // [Go] Shouldn't this be token.end_mark?
+	}
+	return true
+}
+
+// Parse the productions:
+// block_mapping        ::= BLOCK-MAPPING_START
+//                          *******************
+//                          ((KEY block_node_or_indentless_sequence?)?
+//                            *** *
+//                          (VALUE block_node_or_indentless_sequence?)?)*
+//
+//                          BLOCK-END
+//                          *********
+//
+func yaml_parser_parse_block_mapping_key(parser *yaml_parser_t, event *yaml_event_t, first bool) bool {
+	if first {
+		token := peek_token(parser)
+		parser.marks = append(parser.marks, token.start_mark)
+		skip_token(parser)
+	}
+
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+
+	if token.typ == yaml_KEY_TOKEN {
+		mark := token.end_mark
+		skip_token(parser)
+		token = peek_token(parser)
+		if token == nil {
+			return false
+		}
+		if token.typ != yaml_KEY_TOKEN &&
+			token.typ != yaml_VALUE_TOKEN &&
+			token.typ != yaml_BLOCK_END_TOKEN {
+			parser.states = append(parser.states, yaml_PARSE_BLOCK_MAPPING_VALUE_STATE)
+			return yaml_parser_parse_node(parser, event, true, true)
+		} else {
+			parser.state = yaml_PARSE_BLOCK_MAPPING_VALUE_STATE
+			return yaml_parser_process_empty_scalar(parser, event, mark)
+		}
+	} else if token.typ == yaml_BLOCK_END_TOKEN {
+		parser.state = parser.states[len(parser.states)-1]
+		parser.states = parser.states[:len(parser.states)-1]
+		parser.marks = parser.marks[:len(parser.marks)-1]
+		*event = yaml_event_t{
+			typ:        yaml_MAPPING_END_EVENT,
+			start_mark: token.start_mark,
+			end_mark:   token.end_mark,
+		}
+		skip_token(parser)
+		return true
+	}
+
+	context_mark := parser.marks[len(parser.marks)-1]
+	parser.marks = parser.marks[:len(parser.marks)-1]
+	return yaml_parser_set_parser_error_context(parser,
+		"while parsing a block mapping", context_mark,
+		"did not find expected key", token.start_mark)
+}
+
+// Parse the productions:
+// block_mapping        ::= BLOCK-MAPPING_START
+//
+//                          ((KEY block_node_or_indentless_sequence?)?
+//
+//                          (VALUE block_node_or_indentless_sequence?)?)*
+//                           ***** *
+//                          BLOCK-END
+//
+//
+func yaml_parser_parse_block_mapping_value(parser *yaml_parser_t, event *yaml_event_t) bool {
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+	if token.typ == yaml_VALUE_TOKEN {
+		mark := token.end_mark
+		skip_token(parser)
+		token = peek_token(parser)
+		if token == nil {
+			return false
+		}
+		if token.typ != yaml_KEY_TOKEN &&
+			token.typ != yaml_VALUE_TOKEN &&
+			token.typ != yaml_BLOCK_END_TOKEN {
+			parser.states = append(parser.states, yaml_PARSE_BLOCK_MAPPING_KEY_STATE)
+			return yaml_parser_parse_node(parser, event, true, true)
+		}
+		parser.state = yaml_PARSE_BLOCK_MAPPING_KEY_STATE
+		return yaml_parser_process_empty_scalar(parser, event, mark)
+	}
+	parser.state = yaml_PARSE_BLOCK_MAPPING_KEY_STATE
+	return yaml_parser_process_empty_scalar(parser, event, token.start_mark)
+}
+
+// Parse the productions:
+// flow_sequence        ::= FLOW-SEQUENCE-START
+//                          *******************
+//                          (flow_sequence_entry FLOW-ENTRY)*
+//                           *                   **********
+//                          flow_sequence_entry?
+//                          *
+//                          FLOW-SEQUENCE-END
+//                          *****************
+// flow_sequence_entry  ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+//                          *
+//
+func yaml_parser_parse_flow_sequence_entry(parser *yaml_parser_t, event *yaml_event_t, first bool) bool {
+	if first {
+		token := peek_token(parser)
+		parser.marks = append(parser.marks, token.start_mark)
+		skip_token(parser)
+	}
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+	if token.typ != yaml_FLOW_SEQUENCE_END_TOKEN {
+		if !first {
+			if token.typ == yaml_FLOW_ENTRY_TOKEN {
+				skip_token(parser)
+				token = peek_token(parser)
+				if token == nil {
+					return false
+				}
+			} else {
+				context_mark := parser.marks[len(parser.marks)-1]
+				parser.marks = parser.marks[:len(parser.marks)-1]
+				return yaml_parser_set_parser_error_context(parser,
+					"while parsing a flow sequence", context_mark,
+					"did not find expected ',' or ']'", token.start_mark)
+			}
+		}
+
+		if token.typ == yaml_KEY_TOKEN {
+			parser.state = yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE
+			*event = yaml_event_t{
+				typ:        yaml_MAPPING_START_EVENT,
+				start_mark: token.start_mark,
+				end_mark:   token.end_mark,
+				implicit:   true,
+				style:      yaml_style_t(yaml_FLOW_MAPPING_STYLE),
+			}
+			skip_token(parser)
+			return true
+		} else if token.typ != yaml_FLOW_SEQUENCE_END_TOKEN {
+			parser.states = append(parser.states, yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE)
+			return yaml_parser_parse_node(parser, event, false, false)
+		}
+	}
+
+	parser.state = parser.states[len(parser.states)-1]
+	parser.states = parser.states[:len(parser.states)-1]
+	parser.marks = parser.marks[:len(parser.marks)-1]
+
+	*event = yaml_event_t{
+		typ:        yaml_SEQUENCE_END_EVENT,
+		start_mark: token.start_mark,
+		end_mark:   token.end_mark,
+	}
+
+	skip_token(parser)
+	return true
+}
+
+//
+// Parse the productions:
+// flow_sequence_entry  ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+//                                      *** *
+//
+func yaml_parser_parse_flow_sequence_entry_mapping_key(parser *yaml_parser_t, event *yaml_event_t) bool {
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+	if token.typ != yaml_VALUE_TOKEN &&
+		token.typ != yaml_FLOW_ENTRY_TOKEN &&
+		token.typ != yaml_FLOW_SEQUENCE_END_TOKEN {
+		parser.states = append(parser.states, yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE)
+		return yaml_parser_parse_node(parser, event, false, false)
+	}
+	mark := token.end_mark
+	skip_token(parser)
+	parser.state = yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE
+	return yaml_parser_process_empty_scalar(parser, event, mark)
+}
+
+// Parse the productions:
+// flow_sequence_entry  ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+//                                                      ***** *
+//
+func yaml_parser_parse_flow_sequence_entry_mapping_value(parser *yaml_parser_t, event *yaml_event_t) bool {
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+	if token.typ == yaml_VALUE_TOKEN {
+		skip_token(parser)
+		token := peek_token(parser)
+		if token == nil {
+			return false
+		}
+		if token.typ != yaml_FLOW_ENTRY_TOKEN && token.typ != yaml_FLOW_SEQUENCE_END_TOKEN {
+			parser.states = append(parser.states, yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE)
+			return yaml_parser_parse_node(parser, event, false, false)
+		}
+	}
+	parser.state = yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE
+	return yaml_parser_process_empty_scalar(parser, event, token.start_mark)
+}
+
+// Parse the productions:
+// flow_sequence_entry  ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+//                                                                      *
+//
+func yaml_parser_parse_flow_sequence_entry_mapping_end(parser *yaml_parser_t, event *yaml_event_t) bool {
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+	parser.state = yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE
+	*event = yaml_event_t{
+		typ:        yaml_MAPPING_END_EVENT,
+		start_mark: token.start_mark,
+		end_mark:   token.start_mark, // [Go] Shouldn't this be end_mark?
+	}
+	return true
+}
+
+// Parse the productions:
+// flow_mapping         ::= FLOW-MAPPING-START
+//                          ******************
+//                          (flow_mapping_entry FLOW-ENTRY)*
+//                           *                  **********
+//                          flow_mapping_entry?
+//                          ******************
+//                          FLOW-MAPPING-END
+//                          ****************
+// flow_mapping_entry   ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+//                          *           *** *
+//
+func yaml_parser_parse_flow_mapping_key(parser *yaml_parser_t, event *yaml_event_t, first bool) bool {
+	if first {
+		token := peek_token(parser)
+		parser.marks = append(parser.marks, token.start_mark)
+		skip_token(parser)
+	}
+
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+
+	if token.typ != yaml_FLOW_MAPPING_END_TOKEN {
+		if !first {
+			if token.typ == yaml_FLOW_ENTRY_TOKEN {
+				skip_token(parser)
+				token = peek_token(parser)
+				if token == nil {
+					return false
+				}
+			} else {
+				context_mark := parser.marks[len(parser.marks)-1]
+				parser.marks = parser.marks[:len(parser.marks)-1]
+				return yaml_parser_set_parser_error_context(parser,
+					"while parsing a flow mapping", context_mark,
+					"did not find expected ',' or '}'", token.start_mark)
+			}
+		}
+
+		if token.typ == yaml_KEY_TOKEN {
+			skip_token(parser)
+			token = peek_token(parser)
+			if token == nil {
+				return false
+			}
+			if token.typ != yaml_VALUE_TOKEN &&
+				token.typ != yaml_FLOW_ENTRY_TOKEN &&
+				token.typ != yaml_FLOW_MAPPING_END_TOKEN {
+				parser.states = append(parser.states, yaml_PARSE_FLOW_MAPPING_VALUE_STATE)
+				return yaml_parser_parse_node(parser, event, false, false)
+			} else {
+				parser.state = yaml_PARSE_FLOW_MAPPING_VALUE_STATE
+				return yaml_parser_process_empty_scalar(parser, event, token.start_mark)
+			}
+		} else if token.typ != yaml_FLOW_MAPPING_END_TOKEN {
+			parser.states = append(parser.states, yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE)
+			return yaml_parser_parse_node(parser, event, false, false)
+		}
+	}
+
+	parser.state = parser.states[len(parser.states)-1]
+	parser.states = parser.states[:len(parser.states)-1]
+	parser.marks = parser.marks[:len(parser.marks)-1]
+	*event = yaml_event_t{
+		typ:        yaml_MAPPING_END_EVENT,
+		start_mark: token.start_mark,
+		end_mark:   token.end_mark,
+	}
+	skip_token(parser)
+	return true
+}
+
+// Parse the productions:
+// flow_mapping_entry   ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+//                                   *                  ***** *
+//
+func yaml_parser_parse_flow_mapping_value(parser *yaml_parser_t, event *yaml_event_t, empty bool) bool {
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+	if empty {
+		parser.state = yaml_PARSE_FLOW_MAPPING_KEY_STATE
+		return yaml_parser_process_empty_scalar(parser, event, token.start_mark)
+	}
+	if token.typ == yaml_VALUE_TOKEN {
+		skip_token(parser)
+		token = peek_token(parser)
+		if token == nil {
+			return false
+		}
+		if token.typ != yaml_FLOW_ENTRY_TOKEN && token.typ != yaml_FLOW_MAPPING_END_TOKEN {
+			parser.states = append(parser.states, yaml_PARSE_FLOW_MAPPING_KEY_STATE)
+			return yaml_parser_parse_node(parser, event, false, false)
+		}
+	}
+	parser.state = yaml_PARSE_FLOW_MAPPING_KEY_STATE
+	return yaml_parser_process_empty_scalar(parser, event, token.start_mark)
+}
+
+// Generate an empty scalar event.
+func yaml_parser_process_empty_scalar(parser *yaml_parser_t, event *yaml_event_t, mark yaml_mark_t) bool {
+	*event = yaml_event_t{
+		typ:        yaml_SCALAR_EVENT,
+		start_mark: mark,
+		end_mark:   mark,
+		value:      nil, // Empty
+		implicit:   true,
+		style:      yaml_style_t(yaml_PLAIN_SCALAR_STYLE),
+	}
+	return true
+}
+
+var default_tag_directives = []yaml_tag_directive_t{
+	{[]byte("!"), []byte("!")},
+	{[]byte("!!"), []byte("tag:yaml.org,2002:")},
+}
+
+// Parse directives.
+func yaml_parser_process_directives(parser *yaml_parser_t,
+	version_directive_ref **yaml_version_directive_t,
+	tag_directives_ref *[]yaml_tag_directive_t) bool {
+
+	var version_directive *yaml_version_directive_t
+	var tag_directives []yaml_tag_directive_t
+
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+
+	for token.typ == yaml_VERSION_DIRECTIVE_TOKEN || token.typ == yaml_TAG_DIRECTIVE_TOKEN {
+		if token.typ == yaml_VERSION_DIRECTIVE_TOKEN {
+			if version_directive != nil {
+				yaml_parser_set_parser_error(parser,
+					"found duplicate %YAML directive", token.start_mark)
+				return false
+			}
+			if token.major != 1 || token.minor != 1 {
+				yaml_parser_set_parser_error(parser,
+					"found incompatible YAML document", token.start_mark)
+				return false
+			}
+			version_directive = &yaml_version_directive_t{
+				major: token.major,
+				minor: token.minor,
+			}
+		} else if token.typ == yaml_TAG_DIRECTIVE_TOKEN {
+			value := yaml_tag_directive_t{
+				handle: token.value,
+				prefix: token.prefix,
+			}
+			if !yaml_parser_append_tag_directive(parser, value, false, token.start_mark) {
+				return false
+			}
+			tag_directives = append(tag_directives, value)
+		}
+
+		skip_token(parser)
+		token = peek_token(parser)
+		if token == nil {
+			return false
+		}
+	}
+
+	for i := range default_tag_directives {
+		if !yaml_parser_append_tag_directive(parser, default_tag_directives[i], true, token.start_mark) {
+			return false
+		}
+	}
+
+	if version_directive_ref != nil {
+		*version_directive_ref = version_directive
+	}
+	if tag_directives_ref != nil {
+		*tag_directives_ref = tag_directives
+	}
+	return true
+}
+
+// Append a tag directive to the directives stack.
+func yaml_parser_append_tag_directive(parser *yaml_parser_t, value yaml_tag_directive_t, allow_duplicates bool, mark yaml_mark_t) bool {
+	for i := range parser.tag_directives {
+		if bytes.Equal(value.handle, parser.tag_directives[i].handle) {
+			if allow_duplicates {
+				return true
+			}
+			return yaml_parser_set_parser_error(parser, "found duplicate %TAG directive", mark)
+		}
+	}
+
+	// [Go] I suspect the copy is unnecessary. This was likely done
+	// because there was no way to track ownership of the data.
+	value_copy := yaml_tag_directive_t{
+		handle: make([]byte, len(value.handle)),
+		prefix: make([]byte, len(value.prefix)),
+	}
+	copy(value_copy.handle, value.handle)
+	copy(value_copy.prefix, value.prefix)
+	parser.tag_directives = append(parser.tag_directives, value_copy)
+	return true
+}
diff --git a/reader.c b/reader.c
deleted file mode 100644
index 829e32d..0000000
--- a/reader.c
+++ /dev/null
@@ -1,465 +0,0 @@
-
-#include "yaml_private.h"
-
-/*
- * Declarations.
- */
-
-static int
-yaml_parser_set_reader_error(yaml_parser_t *parser, const char *problem,
-        size_t offset, int value);
-
-static int
-yaml_parser_update_raw_buffer(yaml_parser_t *parser);
-
-static int
-yaml_parser_determine_encoding(yaml_parser_t *parser);
-
-YAML_DECLARE(int)
-yaml_parser_update_buffer(yaml_parser_t *parser, size_t length);
-
-/*
- * Set the reader error and return 0.
- */
-
-static int
-yaml_parser_set_reader_error(yaml_parser_t *parser, const char *problem,
-        size_t offset, int value)
-{
-    parser->error = YAML_READER_ERROR;
-    parser->problem = problem;
-    parser->problem_offset = offset;
-    parser->problem_value = value;
-
-    return 0;
-}
-
-/*
- * Byte order marks.
- */
-
-#define BOM_UTF8    "\xef\xbb\xbf"
-#define BOM_UTF16LE "\xff\xfe"
-#define BOM_UTF16BE "\xfe\xff"
-
-/*
- * Determine the input stream encoding by checking the BOM symbol. If no BOM is
- * found, the UTF-8 encoding is assumed. Return 1 on success, 0 on failure.
- */
-
-static int
-yaml_parser_determine_encoding(yaml_parser_t *parser)
-{
-    /* Ensure that we had enough bytes in the raw buffer. */
-
-    while (!parser->eof 
-            && parser->raw_buffer.last - parser->raw_buffer.pointer < 3) {
-        if (!yaml_parser_update_raw_buffer(parser)) {
-            return 0;
-        }
-    }
-
-    /* Determine the encoding. */
-
-    if (parser->raw_buffer.last - parser->raw_buffer.pointer >= 2
-            && !memcmp(parser->raw_buffer.pointer, BOM_UTF16LE, 2)) {
-        parser->encoding = YAML_UTF16LE_ENCODING;
-        parser->raw_buffer.pointer += 2;
-        parser->offset += 2;
-    }
-    else if (parser->raw_buffer.last - parser->raw_buffer.pointer >= 2
-            && !memcmp(parser->raw_buffer.pointer, BOM_UTF16BE, 2)) {
-        parser->encoding = YAML_UTF16BE_ENCODING;
-        parser->raw_buffer.pointer += 2;
-        parser->offset += 2;
-    }
-    else if (parser->raw_buffer.last - parser->raw_buffer.pointer >= 3
-            && !memcmp(parser->raw_buffer.pointer, BOM_UTF8, 3)) {
-        parser->encoding = YAML_UTF8_ENCODING;
-        parser->raw_buffer.pointer += 3;
-        parser->offset += 3;
-    }
-    else {
-        parser->encoding = YAML_UTF8_ENCODING;
-    }
-
-    return 1;
-}
-
-/*
- * Update the raw buffer.
- */
-
-static int
-yaml_parser_update_raw_buffer(yaml_parser_t *parser)
-{
-    size_t size_read = 0;
-
-    /* Return if the raw buffer is full. */
-
-    if (parser->raw_buffer.start == parser->raw_buffer.pointer
-            && parser->raw_buffer.last == parser->raw_buffer.end)
-        return 1;
-
-    /* Return on EOF. */
-
-    if (parser->eof) return 1;
-
-    /* Move the remaining bytes in the raw buffer to the beginning. */
-
-    if (parser->raw_buffer.start < parser->raw_buffer.pointer
-            && parser->raw_buffer.pointer < parser->raw_buffer.last) {
-        memmove(parser->raw_buffer.start, parser->raw_buffer.pointer,
-                parser->raw_buffer.last - parser->raw_buffer.pointer);
-    }
-    parser->raw_buffer.last -=
-        parser->raw_buffer.pointer - parser->raw_buffer.start;
-    parser->raw_buffer.pointer = parser->raw_buffer.start;
-
-    /* Call the read handler to fill the buffer. */
-
-    if (!parser->read_handler(parser->read_handler_data, parser->raw_buffer.last,
-                parser->raw_buffer.end - parser->raw_buffer.last, &size_read)) {
-        return yaml_parser_set_reader_error(parser, "input error",
-                parser->offset, -1);
-    }
-    parser->raw_buffer.last += size_read;
-    if (!size_read) {
-        parser->eof = 1;
-    }
-
-    return 1;
-}
-
-/*
- * Ensure that the buffer contains at least `length` characters.
- * Return 1 on success, 0 on failure.
- *
- * The length is supposed to be significantly less that the buffer size.
- */
-
-YAML_DECLARE(int)
-yaml_parser_update_buffer(yaml_parser_t *parser, size_t length)
-{
-    int first = 1;
-
-    assert(parser->read_handler);   /* Read handler must be set. */
-
-    /* If the EOF flag is set and the raw buffer is empty, do nothing. */
-
-    if (parser->eof && parser->raw_buffer.pointer == parser->raw_buffer.last)
-        return 1;
-
-    /* Return if the buffer contains enough characters. */
-
-    if (parser->unread >= length)
-        return 1;
-
-    /* Determine the input encoding if it is not known yet. */
-
-    if (!parser->encoding) {
-        if (!yaml_parser_determine_encoding(parser))
-            return 0;
-    }
-
-    /* Move the unread characters to the beginning of the buffer. */
-
-    if (parser->buffer.start < parser->buffer.pointer
-            && parser->buffer.pointer < parser->buffer.last) {
-        size_t size = parser->buffer.last - parser->buffer.pointer;
-        memmove(parser->buffer.start, parser->buffer.pointer, size);
-        parser->buffer.pointer = parser->buffer.start;
-        parser->buffer.last = parser->buffer.start + size;
-    }
-    else if (parser->buffer.pointer == parser->buffer.last) {
-        parser->buffer.pointer = parser->buffer.start;
-        parser->buffer.last = parser->buffer.start;
-    }
-
-    /* Fill the buffer until it has enough characters. */
-
-    while (parser->unread < length)
-    {
-        /* Fill the raw buffer if necessary. */
-
-        if (!first || parser->raw_buffer.pointer == parser->raw_buffer.last) {
-            if (!yaml_parser_update_raw_buffer(parser)) return 0;
-        }
-        first = 0;
-
-        /* Decode the raw buffer. */
-
-        while (parser->raw_buffer.pointer != parser->raw_buffer.last)
-        {
-            unsigned int value = 0, value2 = 0;
-            int incomplete = 0;
-            unsigned char octet;
-            unsigned int width = 0;
-            int low, high;
-            size_t k;
-            size_t raw_unread = parser->raw_buffer.last - parser->raw_buffer.pointer;
-
-            /* Decode the next character. */
-
-            switch (parser->encoding)
-            {
-                case YAML_UTF8_ENCODING:
-
-                    /*
-                     * Decode a UTF-8 character.  Check RFC 3629
-                     * (http://www.ietf.org/rfc/rfc3629.txt) for more details.
-                     *
-                     * The following table (taken from the RFC) is used for
-                     * decoding.
-                     *
-                     *    Char. number range |        UTF-8 octet sequence
-                     *      (hexadecimal)    |              (binary)
-                     *   --------------------+------------------------------------
-                     *   0000 0000-0000 007F | 0xxxxxxx
-                     *   0000 0080-0000 07FF | 110xxxxx 10xxxxxx
-                     *   0000 0800-0000 FFFF | 1110xxxx 10xxxxxx 10xxxxxx
-                     *   0001 0000-0010 FFFF | 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
-                     *
-                     * Additionally, the characters in the range 0xD800-0xDFFF
-                     * are prohibited as they are reserved for use with UTF-16
-                     * surrogate pairs.
-                     */
-
-                    /* Determine the length of the UTF-8 sequence. */
-
-                    octet = parser->raw_buffer.pointer[0];
-                    width = (octet & 0x80) == 0x00 ? 1 :
-                            (octet & 0xE0) == 0xC0 ? 2 :
-                            (octet & 0xF0) == 0xE0 ? 3 :
-                            (octet & 0xF8) == 0xF0 ? 4 : 0;
-
-                    /* Check if the leading octet is valid. */
-
-                    if (!width)
-                        return yaml_parser_set_reader_error(parser,
-                                "invalid leading UTF-8 octet",
-                                parser->offset, octet);
-
-                    /* Check if the raw buffer contains an incomplete character. */
-
-                    if (width > raw_unread) {
-                        if (parser->eof) {
-                            return yaml_parser_set_reader_error(parser,
-                                    "incomplete UTF-8 octet sequence",
-                                    parser->offset, -1);
-                        }
-                        incomplete = 1;
-                        break;
-                    }
-
-                    /* Decode the leading octet. */
-
-                    value = (octet & 0x80) == 0x00 ? octet & 0x7F :
-                            (octet & 0xE0) == 0xC0 ? octet & 0x1F :
-                            (octet & 0xF0) == 0xE0 ? octet & 0x0F :
-                            (octet & 0xF8) == 0xF0 ? octet & 0x07 : 0;
-
-                    /* Check and decode the trailing octets. */
-
-                    for (k = 1; k < width; k ++)
-                    {
-                        octet = parser->raw_buffer.pointer[k];
-
-                        /* Check if the octet is valid. */
-
-                        if ((octet & 0xC0) != 0x80)
-                            return yaml_parser_set_reader_error(parser,
-                                    "invalid trailing UTF-8 octet",
-                                    parser->offset+k, octet);
-
-                        /* Decode the octet. */
-
-                        value = (value << 6) + (octet & 0x3F);
-                    }
-
-                    /* Check the length of the sequence against the value. */
-
-                    if (!((width == 1) ||
-                            (width == 2 && value >= 0x80) ||
-                            (width == 3 && value >= 0x800) ||
-                            (width == 4 && value >= 0x10000)))
-                        return yaml_parser_set_reader_error(parser,
-                                "invalid length of a UTF-8 sequence",
-                                parser->offset, -1);
-
-                    /* Check the range of the value. */
-
-                    if ((value >= 0xD800 && value <= 0xDFFF) || value > 0x10FFFF)
-                        return yaml_parser_set_reader_error(parser,
-                                "invalid Unicode character",
-                                parser->offset, value);
-
-                    break;
-                
-                case YAML_UTF16LE_ENCODING:
-                case YAML_UTF16BE_ENCODING:
-
-                    low = (parser->encoding == YAML_UTF16LE_ENCODING ? 0 : 1);
-                    high = (parser->encoding == YAML_UTF16LE_ENCODING ? 1 : 0);
-
-                    /*
-                     * The UTF-16 encoding is not as simple as one might
-                     * naively think.  Check RFC 2781
-                     * (http://www.ietf.org/rfc/rfc2781.txt).
-                     *
-                     * Normally, two subsequent bytes describe a Unicode
-                     * character.  However a special technique (called a
-                     * surrogate pair) is used for specifying character
-                     * values larger than 0xFFFF.
-                     *
-                     * A surrogate pair consists of two pseudo-characters:
-                     *      high surrogate area (0xD800-0xDBFF)
-                     *      low surrogate area (0xDC00-0xDFFF)
-                     *
-                     * The following formulas are used for decoding
-                     * and encoding characters using surrogate pairs:
-                     * 
-                     *  U  = U' + 0x10000   (0x01 00 00 <= U <= 0x10 FF FF)
-                     *  U' = yyyyyyyyyyxxxxxxxxxx   (0 <= U' <= 0x0F FF FF)
-                     *  W1 = 110110yyyyyyyyyy
-                     *  W2 = 110111xxxxxxxxxx
-                     *
-                     * where U is the character value, W1 is the high surrogate
-                     * area, W2 is the low surrogate area.
-                     */
-
-                    /* Check for incomplete UTF-16 character. */
-
-                    if (raw_unread < 2) {
-                        if (parser->eof) {
-                            return yaml_parser_set_reader_error(parser,
-                                    "incomplete UTF-16 character",
-                                    parser->offset, -1);
-                        }
-                        incomplete = 1;
-                        break;
-                    }
-
-                    /* Get the character. */
-
-                    value = parser->raw_buffer.pointer[low]
-                        + (parser->raw_buffer.pointer[high] << 8);
-
-                    /* Check for unexpected low surrogate area. */
-
-                    if ((value & 0xFC00) == 0xDC00)
-                        return yaml_parser_set_reader_error(parser,
-                                "unexpected low surrogate area",
-                                parser->offset, value);
-
-                    /* Check for a high surrogate area. */
-
-                    if ((value & 0xFC00) == 0xD800) {
-
-                        width = 4;
-
-                        /* Check for incomplete surrogate pair. */
-
-                        if (raw_unread < 4) {
-                            if (parser->eof) {
-                                return yaml_parser_set_reader_error(parser,
-                                        "incomplete UTF-16 surrogate pair",
-                                        parser->offset, -1);
-                            }
-                            incomplete = 1;
-                            break;
-                        }
-
-                        /* Get the next character. */
-
-                        value2 = parser->raw_buffer.pointer[low+2]
-                            + (parser->raw_buffer.pointer[high+2] << 8);
-
-                        /* Check for a low surrogate area. */
-
-                        if ((value2 & 0xFC00) != 0xDC00)
-                            return yaml_parser_set_reader_error(parser,
-                                    "expected low surrogate area",
-                                    parser->offset+2, value2);
-
-                        /* Generate the value of the surrogate pair. */
-
-                        value = 0x10000 + ((value & 0x3FF) << 10) + (value2 & 0x3FF);
-                    }
-
-                    else {
-                        width = 2;
-                    }
-
-                    break;
-
-                default:
-                    assert(1);      /* Impossible. */
-            }
-
-            /* Check if the raw buffer contains enough bytes to form a character. */
-
-            if (incomplete) break;
-
-            /*
-             * Check if the character is in the allowed range:
-             *      #x9 | #xA | #xD | [#x20-#x7E]               (8 bit)
-             *      | #x85 | [#xA0-#xD7FF] | [#xE000-#xFFFD]    (16 bit)
-             *      | [#x10000-#x10FFFF]                        (32 bit)
-             */
-
-            if (! (value == 0x09 || value == 0x0A || value == 0x0D
-                        || (value >= 0x20 && value <= 0x7E)
-                        || (value == 0x85) || (value >= 0xA0 && value <= 0xD7FF)
-                        || (value >= 0xE000 && value <= 0xFFFD)
-                        || (value >= 0x10000 && value <= 0x10FFFF)))
-                return yaml_parser_set_reader_error(parser,
-                        "control characters are not allowed",
-                        parser->offset, value);
-
-            /* Move the raw pointers. */
-
-            parser->raw_buffer.pointer += width;
-            parser->offset += width;
-
-            /* Finally put the character into the buffer. */
-
-            /* 0000 0000-0000 007F -> 0xxxxxxx */
-            if (value <= 0x7F) {
-                *(parser->buffer.last++) = value;
-            }
-            /* 0000 0080-0000 07FF -> 110xxxxx 10xxxxxx */
-            else if (value <= 0x7FF) {
-                *(parser->buffer.last++) = 0xC0 + (value >> 6);
-                *(parser->buffer.last++) = 0x80 + (value & 0x3F);
-            }
-            /* 0000 0800-0000 FFFF -> 1110xxxx 10xxxxxx 10xxxxxx */
-            else if (value <= 0xFFFF) {
-                *(parser->buffer.last++) = 0xE0 + (value >> 12);
-                *(parser->buffer.last++) = 0x80 + ((value >> 6) & 0x3F);
-                *(parser->buffer.last++) = 0x80 + (value & 0x3F);
-            }
-            /* 0001 0000-0010 FFFF -> 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx */
-            else {
-                *(parser->buffer.last++) = 0xF0 + (value >> 18);
-                *(parser->buffer.last++) = 0x80 + ((value >> 12) & 0x3F);
-                *(parser->buffer.last++) = 0x80 + ((value >> 6) & 0x3F);
-                *(parser->buffer.last++) = 0x80 + (value & 0x3F);
-            }
-
-            parser->unread ++;
-        }
-
-        /* On EOF, put NUL into the buffer and return. */
-
-        if (parser->eof) {
-            *(parser->buffer.last++) = '\0';
-            parser->unread ++;
-            return 1;
-        }
-
-    }
-
-    return 1;
-}
-
diff --git a/readerc.go b/readerc.go
new file mode 100644
index 0000000..c732935
--- /dev/null
+++ b/readerc.go
@@ -0,0 +1,391 @@
+package goyaml
+
+import (
+	"io"
+)
+
+// Set the reader error and return 0.
+func yaml_parser_set_reader_error(parser *yaml_parser_t, problem string, offset int, value int) bool {
+	parser.error = yaml_READER_ERROR
+	parser.problem = problem
+	parser.problem_offset = offset
+	parser.problem_value = value
+	return false
+}
+
+// Byte order marks.
+const (
+	bom_UTF8    = "\xef\xbb\xbf"
+	bom_UTF16LE = "\xff\xfe"
+	bom_UTF16BE = "\xfe\xff"
+)
+
+// Determine the input stream encoding by checking the BOM symbol. If no BOM is
+// found, the UTF-8 encoding is assumed. Return 1 on success, 0 on failure.
+func yaml_parser_determine_encoding(parser *yaml_parser_t) bool {
+	// Ensure that we had enough bytes in the raw buffer.
+	for !parser.eof && len(parser.raw_buffer)-parser.raw_buffer_pos < 3 {
+		if !yaml_parser_update_raw_buffer(parser) {
+			return false
+		}
+	}
+
+	// Determine the encoding.
+	buf := parser.raw_buffer
+	pos := parser.raw_buffer_pos
+	avail := len(buf) - pos
+	if avail >= 2 && buf[pos] == bom_UTF16LE[0] && buf[pos+1] == bom_UTF16LE[1] {
+		parser.encoding = yaml_UTF16LE_ENCODING
+		parser.raw_buffer_pos += 2
+		parser.offset += 2
+	} else if avail >= 2 && buf[pos] == bom_UTF16BE[0] && buf[pos+1] == bom_UTF16BE[1] {
+		parser.encoding = yaml_UTF16BE_ENCODING
+		parser.raw_buffer_pos += 2
+		parser.offset += 2
+	} else if avail >= 3 && buf[pos] == bom_UTF8[0] && buf[pos+1] == bom_UTF8[1] && buf[pos+2] == bom_UTF8[2] {
+		parser.encoding = yaml_UTF8_ENCODING
+		parser.raw_buffer_pos += 3
+		parser.offset += 3
+	} else {
+		parser.encoding = yaml_UTF8_ENCODING
+	}
+	return true
+}
+
+// Update the raw buffer.
+func yaml_parser_update_raw_buffer(parser *yaml_parser_t) bool {
+	size_read := 0
+
+	// Return if the raw buffer is full.
+	if parser.raw_buffer_pos == 0 && len(parser.raw_buffer) == cap(parser.raw_buffer) {
+		return true
+	}
+
+	// Return on EOF.
+	if parser.eof {
+		return true
+	}
+
+	// Move the remaining bytes in the raw buffer to the beginning.
+	if parser.raw_buffer_pos > 0 && parser.raw_buffer_pos < len(parser.raw_buffer) {
+		copy(parser.raw_buffer, parser.raw_buffer[parser.raw_buffer_pos:])
+	}
+	parser.raw_buffer = parser.raw_buffer[:len(parser.raw_buffer)-parser.raw_buffer_pos]
+	parser.raw_buffer_pos = 0
+
+	// Call the read handler to fill the buffer.
+	size_read, err := parser.read_handler(parser, parser.raw_buffer[len(parser.raw_buffer):cap(parser.raw_buffer)])
+	parser.raw_buffer = parser.raw_buffer[:len(parser.raw_buffer)+size_read]
+	if err == io.EOF {
+		parser.eof = true
+	} else if err != nil {
+		return yaml_parser_set_reader_error(parser, "input error: "+err.Error(), parser.offset, -1)
+	}
+	return true
+}
+
+// Ensure that the buffer contains at least `length` characters.
+// Return true on success, false on failure.
+//
+// The length is supposed to be significantly less that the buffer size.
+func yaml_parser_update_buffer(parser *yaml_parser_t, length int) bool {
+	if parser.read_handler == nil {
+		panic("read handler must be set")
+	}
+
+	// If the EOF flag is set and the raw buffer is empty, do nothing.
+	if parser.eof && parser.raw_buffer_pos == len(parser.raw_buffer) {
+		return true
+	}
+
+	// Return if the buffer contains enough characters.
+	if parser.unread >= length {
+		return true
+	}
+
+	// Determine the input encoding if it is not known yet.
+	if parser.encoding == yaml_ANY_ENCODING {
+		if !yaml_parser_determine_encoding(parser) {
+			return false
+		}
+	}
+
+	// Move the unread characters to the beginning of the buffer.
+	buffer_len := len(parser.buffer)
+	if parser.buffer_pos > 0 && parser.buffer_pos < buffer_len {
+		copy(parser.buffer, parser.buffer[parser.buffer_pos:])
+		buffer_len -= parser.buffer_pos
+		parser.buffer_pos = 0
+	} else if parser.buffer_pos == buffer_len {
+		buffer_len = 0
+		parser.buffer_pos = 0
+	}
+
+	// Open the whole buffer for writing, and cut it before returning.
+	parser.buffer = parser.buffer[:cap(parser.buffer)]
+
+	// Fill the buffer until it has enough characters.
+	first := true
+	for parser.unread < length {
+
+		// Fill the raw buffer if necessary.
+		if !first || parser.raw_buffer_pos == len(parser.raw_buffer) {
+			if !yaml_parser_update_raw_buffer(parser) {
+				parser.buffer = parser.buffer[:buffer_len]
+				return false
+			}
+		}
+		first = false
+
+		// Decode the raw buffer.
+	inner:
+		for parser.raw_buffer_pos != len(parser.raw_buffer) {
+			var value rune
+			var width int
+
+			raw_unread := len(parser.raw_buffer) - parser.raw_buffer_pos
+
+			// Decode the next character.
+			switch parser.encoding {
+			case yaml_UTF8_ENCODING:
+				// Decode a UTF-8 character.  Check RFC 3629
+				// (http://www.ietf.org/rfc/rfc3629.txt) for more details.
+				//
+				// The following table (taken from the RFC) is used for
+				// decoding.
+				//
+				//    Char. number range |        UTF-8 octet sequence
+				//      (hexadecimal)    |              (binary)
+				//   --------------------+------------------------------------
+				//   0000 0000-0000 007F | 0xxxxxxx
+				//   0000 0080-0000 07FF | 110xxxxx 10xxxxxx
+				//   0000 0800-0000 FFFF | 1110xxxx 10xxxxxx 10xxxxxx
+				//   0001 0000-0010 FFFF | 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
+				//
+				// Additionally, the characters in the range 0xD800-0xDFFF
+				// are prohibited as they are reserved for use with UTF-16
+				// surrogate pairs.
+
+				// Determine the length of the UTF-8 sequence.
+				octet := parser.raw_buffer[parser.raw_buffer_pos]
+				switch {
+				case octet&0x80 == 0x00:
+					width = 1
+				case octet&0xE0 == 0xC0:
+					width = 2
+				case octet&0xF0 == 0xE0:
+					width = 3
+				case octet&0xF8 == 0xF0:
+					width = 4
+				default:
+					// The leading octet is invalid.
+					return yaml_parser_set_reader_error(parser,
+						"invalid leading UTF-8 octet",
+						parser.offset, int(octet))
+				}
+
+				// Check if the raw buffer contains an incomplete character.
+				if width > raw_unread {
+					if parser.eof {
+						return yaml_parser_set_reader_error(parser,
+							"incomplete UTF-8 octet sequence",
+							parser.offset, -1)
+					}
+					break inner
+				}
+
+				// Decode the leading octet.
+				switch {
+				case octet&0x80 == 0x00:
+					value = rune(octet & 0x7F)
+				case octet&0xE0 == 0xC0:
+					value = rune(octet & 0x1F)
+				case octet&0xF0 == 0xE0:
+					value = rune(octet & 0x0F)
+				case octet&0xF8 == 0xF0:
+					value = rune(octet & 0x07)
+				default:
+					value = 0
+				}
+
+				// Check and decode the trailing octets.
+				for k := 1; k < width; k++ {
+					octet = parser.raw_buffer[parser.raw_buffer_pos+k]
+
+					// Check if the octet is valid.
+					if (octet & 0xC0) != 0x80 {
+						return yaml_parser_set_reader_error(parser,
+							"invalid trailing UTF-8 octet",
+							parser.offset+k, int(octet))
+					}
+
+					// Decode the octet.
+					value = (value << 6) + rune(octet&0x3F)
+				}
+
+				// Check the length of the sequence against the value.
+				switch {
+				case width == 1:
+				case width == 2 && value >= 0x80:
+				case width == 3 && value >= 0x800:
+				case width == 4 && value >= 0x10000:
+				default:
+					return yaml_parser_set_reader_error(parser,
+						"invalid length of a UTF-8 sequence",
+						parser.offset, -1)
+				}
+
+				// Check the range of the value.
+				if value >= 0xD800 && value <= 0xDFFF || value > 0x10FFFF {
+					return yaml_parser_set_reader_error(parser,
+						"invalid Unicode character",
+						parser.offset, int(value))
+				}
+
+			case yaml_UTF16LE_ENCODING, yaml_UTF16BE_ENCODING:
+				var low, high int
+				if parser.encoding == yaml_UTF16LE_ENCODING {
+					low, high = 0, 1
+				} else {
+					high, low = 1, 0
+				}
+
+				// The UTF-16 encoding is not as simple as one might
+				// naively think.  Check RFC 2781
+				// (http://www.ietf.org/rfc/rfc2781.txt).
+				//
+				// Normally, two subsequent bytes describe a Unicode
+				// character.  However a special technique (called a
+				// surrogate pair) is used for specifying character
+				// values larger than 0xFFFF.
+				//
+				// A surrogate pair consists of two pseudo-characters:
+				//      high surrogate area (0xD800-0xDBFF)
+				//      low surrogate area (0xDC00-0xDFFF)
+				//
+				// The following formulas are used for decoding
+				// and encoding characters using surrogate pairs:
+				//
+				//  U  = U' + 0x10000   (0x01 00 00 <= U <= 0x10 FF FF)
+				//  U' = yyyyyyyyyyxxxxxxxxxx   (0 <= U' <= 0x0F FF FF)
+				//  W1 = 110110yyyyyyyyyy
+				//  W2 = 110111xxxxxxxxxx
+				//
+				// where U is the character value, W1 is the high surrogate
+				// area, W2 is the low surrogate area.
+
+				// Check for incomplete UTF-16 character.
+				if raw_unread < 2 {
+					if parser.eof {
+						return yaml_parser_set_reader_error(parser,
+							"incomplete UTF-16 character",
+							parser.offset, -1)
+					}
+					break inner
+				}
+
+				// Get the character.
+				value = rune(parser.raw_buffer[parser.raw_buffer_pos+low]) +
+					(rune(parser.raw_buffer[parser.raw_buffer_pos+high]) << 8)
+
+				// Check for unexpected low surrogate area.
+				if value&0xFC00 == 0xDC00 {
+					return yaml_parser_set_reader_error(parser,
+						"unexpected low surrogate area",
+						parser.offset, int(value))
+				}
+
+				// Check for a high surrogate area.
+				if value&0xFC00 == 0xD800 {
+					width = 4
+
+					// Check for incomplete surrogate pair.
+					if raw_unread < 4 {
+						if parser.eof {
+							return yaml_parser_set_reader_error(parser,
+								"incomplete UTF-16 surrogate pair",
+								parser.offset, -1)
+						}
+						break inner
+					}
+
+					// Get the next character.
+					value2 := rune(parser.raw_buffer[parser.raw_buffer_pos+low+2]) +
+						(rune(parser.raw_buffer[parser.raw_buffer_pos+high+2]) << 8)
+
+					// Check for a low surrogate area.
+					if value2&0xFC00 != 0xDC00 {
+						return yaml_parser_set_reader_error(parser,
+							"expected low surrogate area",
+							parser.offset+2, int(value2))
+					}
+
+					// Generate the value of the surrogate pair.
+					value = 0x10000 + ((value & 0x3FF) << 10) + (value2 & 0x3FF)
+				} else {
+					width = 2
+				}
+
+			default:
+				panic("impossible")
+			}
+
+			// Check if the character is in the allowed range:
+			//      #x9 | #xA | #xD | [#x20-#x7E]               (8 bit)
+			//      | #x85 | [#xA0-#xD7FF] | [#xE000-#xFFFD]    (16 bit)
+			//      | [#x10000-#x10FFFF]                        (32 bit)
+			switch {
+			case value == 0x09:
+			case value == 0x0A:
+			case value == 0x0D:
+			case value >= 0x20 && value <= 0x7E:
+			case value == 0x85:
+			case value >= 0xA0 && value <= 0xD7FF:
+			case value >= 0xE000 && value <= 0xFFFD:
+			case value >= 0x10000 && value <= 0x10FFFF:
+			default:
+				return yaml_parser_set_reader_error(parser,
+					"control characters are not allowed",
+					parser.offset, int(value))
+			}
+
+			// Move the raw pointers.
+			parser.raw_buffer_pos += width
+			parser.offset += width
+
+			// Finally put the character into the buffer.
+			if value <= 0x7F {
+				// 0000 0000-0000 007F . 0xxxxxxx
+				parser.buffer[buffer_len+0] = byte(value)
+			} else if value <= 0x7FF {
+				// 0000 0080-0000 07FF . 110xxxxx 10xxxxxx
+				parser.buffer[buffer_len+0] = byte(0xC0 + (value >> 6))
+				parser.buffer[buffer_len+1] = byte(0x80 + (value & 0x3F))
+			} else if value <= 0xFFFF {
+				// 0000 0800-0000 FFFF . 1110xxxx 10xxxxxx 10xxxxxx
+				parser.buffer[buffer_len+0] = byte(0xE0 + (value >> 12))
+				parser.buffer[buffer_len+1] = byte(0x80 + ((value >> 6) & 0x3F))
+				parser.buffer[buffer_len+2] = byte(0x80 + (value & 0x3F))
+			} else {
+				// 0001 0000-0010 FFFF . 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
+				parser.buffer[buffer_len+0] = byte(0xF0 + (value >> 18))
+				parser.buffer[buffer_len+1] = byte(0x80 + ((value >> 12) & 0x3F))
+				parser.buffer[buffer_len+2] = byte(0x80 + ((value >> 6) & 0x3F))
+				parser.buffer[buffer_len+3] = byte(0x80 + (value & 0x3F))
+			}
+			buffer_len += width
+
+			parser.unread++
+		}
+
+		// On EOF, put NUL into the buffer and return.
+		if parser.eof {
+			parser.buffer[buffer_len] = 0
+			buffer_len++
+			parser.unread++
+			break
+		}
+	}
+	parser.buffer = parser.buffer[:buffer_len]
+	return true
+}
diff --git a/scanner.c b/scanner.c
deleted file mode 100644
index a2e8619..0000000
--- a/scanner.c
+++ /dev/null
@@ -1,3570 +0,0 @@
-
-/*
- * Introduction
- * ************
- *
- * The following notes assume that you are familiar with the YAML specification
- * (http://yaml.org/spec/cvs/current.html).  We mostly follow it, although in
- * some cases we are less restrictive that it requires.
- *
- * The process of transforming a YAML stream into a sequence of events is
- * divided on two steps: Scanning and Parsing.
- *
- * The Scanner transforms the input stream into a sequence of tokens, while the
- * parser transform the sequence of tokens produced by the Scanner into a
- * sequence of parsing events.
- *
- * The Scanner is rather clever and complicated. The Parser, on the contrary,
- * is a straightforward implementation of a recursive-descendant parser (or,
- * LL(1) parser, as it is usually called).
- *
- * Actually there are two issues of Scanning that might be called "clever", the
- * rest is quite straightforward.  The issues are "block collection start" and
- * "simple keys".  Both issues are explained below in details.
- *
- * Here the Scanning step is explained and implemented.  We start with the list
- * of all the tokens produced by the Scanner together with short descriptions.
- *
- * Now, tokens:
- *
- *      STREAM-START(encoding)          # The stream start.
- *      STREAM-END                      # The stream end.
- *      VERSION-DIRECTIVE(major,minor)  # The '%YAML' directive.
- *      TAG-DIRECTIVE(handle,prefix)    # The '%TAG' directive.
- *      DOCUMENT-START                  # '---'
- *      DOCUMENT-END                    # '...'
- *      BLOCK-SEQUENCE-START            # Indentation increase denoting a block
- *      BLOCK-MAPPING-START             # sequence or a block mapping.
- *      BLOCK-END                       # Indentation decrease.
- *      FLOW-SEQUENCE-START             # '['
- *      FLOW-SEQUENCE-END               # ']'
- *      BLOCK-SEQUENCE-START            # '{'
- *      BLOCK-SEQUENCE-END              # '}'
- *      BLOCK-ENTRY                     # '-'
- *      FLOW-ENTRY                      # ','
- *      KEY                             # '?' or nothing (simple keys).
- *      VALUE                           # ':'
- *      ALIAS(anchor)                   # '*anchor'
- *      ANCHOR(anchor)                  # '&anchor'
- *      TAG(handle,suffix)              # '!handle!suffix'
- *      SCALAR(value,style)             # A scalar.
- *
- * The following two tokens are "virtual" tokens denoting the beginning and the
- * end of the stream:
- *
- *      STREAM-START(encoding)
- *      STREAM-END
- *
- * We pass the information about the input stream encoding with the
- * STREAM-START token.
- *
- * The next two tokens are responsible for tags:
- *
- *      VERSION-DIRECTIVE(major,minor)
- *      TAG-DIRECTIVE(handle,prefix)
- *
- * Example:
- *
- *      %YAML   1.1
- *      %TAG    !   !foo
- *      %TAG    !yaml!  tag:yaml.org,2002:
- *      ---
- *
- * The correspoding sequence of tokens:
- *
- *      STREAM-START(utf-8)
- *      VERSION-DIRECTIVE(1,1)
- *      TAG-DIRECTIVE("!","!foo")
- *      TAG-DIRECTIVE("!yaml","tag:yaml.org,2002:")
- *      DOCUMENT-START
- *      STREAM-END
- *
- * Note that the VERSION-DIRECTIVE and TAG-DIRECTIVE tokens occupy a whole
- * line.
- *
- * The document start and end indicators are represented by:
- *
- *      DOCUMENT-START
- *      DOCUMENT-END
- *
- * Note that if a YAML stream contains an implicit document (without '---'
- * and '...' indicators), no DOCUMENT-START and DOCUMENT-END tokens will be
- * produced.
- *
- * In the following examples, we present whole documents together with the
- * produced tokens.
- *
- *      1. An implicit document:
- *
- *          'a scalar'
- *
- *      Tokens:
- *
- *          STREAM-START(utf-8)
- *          SCALAR("a scalar",single-quoted)
- *          STREAM-END
- *
- *      2. An explicit document:
- *
- *          ---
- *          'a scalar'
- *          ...
- *
- *      Tokens:
- *
- *          STREAM-START(utf-8)
- *          DOCUMENT-START
- *          SCALAR("a scalar",single-quoted)
- *          DOCUMENT-END
- *          STREAM-END
- *
- *      3. Several documents in a stream:
- *
- *          'a scalar'
- *          ---
- *          'another scalar'
- *          ---
- *          'yet another scalar'
- *
- *      Tokens:
- *
- *          STREAM-START(utf-8)
- *          SCALAR("a scalar",single-quoted)
- *          DOCUMENT-START
- *          SCALAR("another scalar",single-quoted)
- *          DOCUMENT-START
- *          SCALAR("yet another scalar",single-quoted)
- *          STREAM-END
- *
- * We have already introduced the SCALAR token above.  The following tokens are
- * used to describe aliases, anchors, tag, and scalars:
- *
- *      ALIAS(anchor)
- *      ANCHOR(anchor)
- *      TAG(handle,suffix)
- *      SCALAR(value,style)
- *
- * The following series of examples illustrate the usage of these tokens:
- *
- *      1. A recursive sequence:
- *
- *          &A [ *A ]
- *
- *      Tokens:
- *
- *          STREAM-START(utf-8)
- *          ANCHOR("A")
- *          FLOW-SEQUENCE-START
- *          ALIAS("A")
- *          FLOW-SEQUENCE-END
- *          STREAM-END
- *
- *      2. A tagged scalar:
- *
- *          !!float "3.14"  # A good approximation.
- *
- *      Tokens:
- *
- *          STREAM-START(utf-8)
- *          TAG("!!","float")
- *          SCALAR("3.14",double-quoted)
- *          STREAM-END
- *
- *      3. Various scalar styles:
- *
- *          --- # Implicit empty plain scalars do not produce tokens.
- *          --- a plain scalar
- *          --- 'a single-quoted scalar'
- *          --- "a double-quoted scalar"
- *          --- |-
- *            a literal scalar
- *          --- >-
- *            a folded
- *            scalar
- *
- *      Tokens:
- *
- *          STREAM-START(utf-8)
- *          DOCUMENT-START
- *          DOCUMENT-START
- *          SCALAR("a plain scalar",plain)
- *          DOCUMENT-START
- *          SCALAR("a single-quoted scalar",single-quoted)
- *          DOCUMENT-START
- *          SCALAR("a double-quoted scalar",double-quoted)
- *          DOCUMENT-START
- *          SCALAR("a literal scalar",literal)
- *          DOCUMENT-START
- *          SCALAR("a folded scalar",folded)
- *          STREAM-END
- *
- * Now it's time to review collection-related tokens. We will start with
- * flow collections:
- *
- *      FLOW-SEQUENCE-START
- *      FLOW-SEQUENCE-END
- *      FLOW-MAPPING-START
- *      FLOW-MAPPING-END
- *      FLOW-ENTRY
- *      KEY
- *      VALUE
- *
- * The tokens FLOW-SEQUENCE-START, FLOW-SEQUENCE-END, FLOW-MAPPING-START, and
- * FLOW-MAPPING-END represent the indicators '[', ']', '{', and '}'
- * correspondingly.  FLOW-ENTRY represent the ',' indicator.  Finally the
- * indicators '?' and ':', which are used for denoting mapping keys and values,
- * are represented by the KEY and VALUE tokens.
- *
- * The following examples show flow collections:
- *
- *      1. A flow sequence:
- *
- *          [item 1, item 2, item 3]
- *
- *      Tokens:
- *
- *          STREAM-START(utf-8)
- *          FLOW-SEQUENCE-START
- *          SCALAR("item 1",plain)
- *          FLOW-ENTRY
- *          SCALAR("item 2",plain)
- *          FLOW-ENTRY
- *          SCALAR("item 3",plain)
- *          FLOW-SEQUENCE-END
- *          STREAM-END
- *
- *      2. A flow mapping:
- *
- *          {
- *              a simple key: a value,  # Note that the KEY token is produced.
- *              ? a complex key: another value,
- *          }
- *
- *      Tokens:
- *
- *          STREAM-START(utf-8)
- *          FLOW-MAPPING-START
- *          KEY
- *          SCALAR("a simple key",plain)
- *          VALUE
- *          SCALAR("a value",plain)
- *          FLOW-ENTRY
- *          KEY
- *          SCALAR("a complex key",plain)
- *          VALUE
- *          SCALAR("another value",plain)
- *          FLOW-ENTRY
- *          FLOW-MAPPING-END
- *          STREAM-END
- *
- * A simple key is a key which is not denoted by the '?' indicator.  Note that
- * the Scanner still produce the KEY token whenever it encounters a simple key.
- *
- * For scanning block collections, the following tokens are used (note that we
- * repeat KEY and VALUE here):
- *
- *      BLOCK-SEQUENCE-START
- *      BLOCK-MAPPING-START
- *      BLOCK-END
- *      BLOCK-ENTRY
- *      KEY
- *      VALUE
- *
- * The tokens BLOCK-SEQUENCE-START and BLOCK-MAPPING-START denote indentation
- * increase that precedes a block collection (cf. the INDENT token in Python).
- * The token BLOCK-END denote indentation decrease that ends a block collection
- * (cf. the DEDENT token in Python).  However YAML has some syntax pecularities
- * that makes detections of these tokens more complex.
- *
- * The tokens BLOCK-ENTRY, KEY, and VALUE are used to represent the indicators
- * '-', '?', and ':' correspondingly.
- *
- * The following examples show how the tokens BLOCK-SEQUENCE-START,
- * BLOCK-MAPPING-START, and BLOCK-END are emitted by the Scanner:
- *
- *      1. Block sequences:
- *
- *          - item 1
- *          - item 2
- *          -
- *            - item 3.1
- *            - item 3.2
- *          -
- *            key 1: value 1
- *            key 2: value 2
- *
- *      Tokens:
- *
- *          STREAM-START(utf-8)
- *          BLOCK-SEQUENCE-START
- *          BLOCK-ENTRY
- *          SCALAR("item 1",plain)
- *          BLOCK-ENTRY
- *          SCALAR("item 2",plain)
- *          BLOCK-ENTRY
- *          BLOCK-SEQUENCE-START
- *          BLOCK-ENTRY
- *          SCALAR("item 3.1",plain)
- *          BLOCK-ENTRY
- *          SCALAR("item 3.2",plain)
- *          BLOCK-END
- *          BLOCK-ENTRY
- *          BLOCK-MAPPING-START
- *          KEY
- *          SCALAR("key 1",plain)
- *          VALUE
- *          SCALAR("value 1",plain)
- *          KEY
- *          SCALAR("key 2",plain)
- *          VALUE
- *          SCALAR("value 2",plain)
- *          BLOCK-END
- *          BLOCK-END
- *          STREAM-END
- *
- *      2. Block mappings:
- *
- *          a simple key: a value   # The KEY token is produced here.
- *          ? a complex key
- *          : another value
- *          a mapping:
- *            key 1: value 1
- *            key 2: value 2
- *          a sequence:
- *            - item 1
- *            - item 2
- *
- *      Tokens:
- *
- *          STREAM-START(utf-8)
- *          BLOCK-MAPPING-START
- *          KEY
- *          SCALAR("a simple key",plain)
- *          VALUE
- *          SCALAR("a value",plain)
- *          KEY
- *          SCALAR("a complex key",plain)
- *          VALUE
- *          SCALAR("another value",plain)
- *          KEY
- *          SCALAR("a mapping",plain)
- *          BLOCK-MAPPING-START
- *          KEY
- *          SCALAR("key 1",plain)
- *          VALUE
- *          SCALAR("value 1",plain)
- *          KEY
- *          SCALAR("key 2",plain)
- *          VALUE
- *          SCALAR("value 2",plain)
- *          BLOCK-END
- *          KEY
- *          SCALAR("a sequence",plain)
- *          VALUE
- *          BLOCK-SEQUENCE-START
- *          BLOCK-ENTRY
- *          SCALAR("item 1",plain)
- *          BLOCK-ENTRY
- *          SCALAR("item 2",plain)
- *          BLOCK-END
- *          BLOCK-END
- *          STREAM-END
- *
- * YAML does not always require to start a new block collection from a new
- * line.  If the current line contains only '-', '?', and ':' indicators, a new
- * block collection may start at the current line.  The following examples
- * illustrate this case:
- *
- *      1. Collections in a sequence:
- *
- *          - - item 1
- *            - item 2
- *          - key 1: value 1
- *            key 2: value 2
- *          - ? complex key
- *            : complex value
- *
- *      Tokens:
- *
- *          STREAM-START(utf-8)
- *          BLOCK-SEQUENCE-START
- *          BLOCK-ENTRY
- *          BLOCK-SEQUENCE-START
- *          BLOCK-ENTRY
- *          SCALAR("item 1",plain)
- *          BLOCK-ENTRY
- *          SCALAR("item 2",plain)
- *          BLOCK-END
- *          BLOCK-ENTRY
- *          BLOCK-MAPPING-START
- *          KEY
- *          SCALAR("key 1",plain)
- *          VALUE
- *          SCALAR("value 1",plain)
- *          KEY
- *          SCALAR("key 2",plain)
- *          VALUE
- *          SCALAR("value 2",plain)
- *          BLOCK-END
- *          BLOCK-ENTRY
- *          BLOCK-MAPPING-START
- *          KEY
- *          SCALAR("complex key")
- *          VALUE
- *          SCALAR("complex value")
- *          BLOCK-END
- *          BLOCK-END
- *          STREAM-END
- *
- *      2. Collections in a mapping:
- *
- *          ? a sequence
- *          : - item 1
- *            - item 2
- *          ? a mapping
- *          : key 1: value 1
- *            key 2: value 2
- *
- *      Tokens:
- *
- *          STREAM-START(utf-8)
- *          BLOCK-MAPPING-START
- *          KEY
- *          SCALAR("a sequence",plain)
- *          VALUE
- *          BLOCK-SEQUENCE-START
- *          BLOCK-ENTRY
- *          SCALAR("item 1",plain)
- *          BLOCK-ENTRY
- *          SCALAR("item 2",plain)
- *          BLOCK-END
- *          KEY
- *          SCALAR("a mapping",plain)
- *          VALUE
- *          BLOCK-MAPPING-START
- *          KEY
- *          SCALAR("key 1",plain)
- *          VALUE
- *          SCALAR("value 1",plain)
- *          KEY
- *          SCALAR("key 2",plain)
- *          VALUE
- *          SCALAR("value 2",plain)
- *          BLOCK-END
- *          BLOCK-END
- *          STREAM-END
- *
- * YAML also permits non-indented sequences if they are included into a block
- * mapping.  In this case, the token BLOCK-SEQUENCE-START is not produced:
- *
- *      key:
- *      - item 1    # BLOCK-SEQUENCE-START is NOT produced here.
- *      - item 2
- *
- * Tokens:
- *
- *      STREAM-START(utf-8)
- *      BLOCK-MAPPING-START
- *      KEY
- *      SCALAR("key",plain)
- *      VALUE
- *      BLOCK-ENTRY
- *      SCALAR("item 1",plain)
- *      BLOCK-ENTRY
- *      SCALAR("item 2",plain)
- *      BLOCK-END
- */
-
-#include "yaml_private.h"
-
-/*
- * Ensure that the buffer contains the required number of characters.
- * Return 1 on success, 0 on failure (reader error or memory error).
- */
-
-#define CACHE(parser,length)                                                    \
-    (parser->unread >= (length)                                                 \
-        ? 1                                                                     \
-        : yaml_parser_update_buffer(parser, (length)))
-
-/*
- * Advance the buffer pointer.
- */
-
-#define SKIP(parser)                                                            \
-     (parser->mark.index ++,                                                    \
-      parser->mark.column ++,                                                   \
-      parser->unread --,                                                        \
-      parser->buffer.pointer += WIDTH(parser->buffer))
-
-#define SKIP_LINE(parser)                                                       \
-     (IS_CRLF(parser->buffer) ?                                                 \
-      (parser->mark.index += 2,                                                 \
-       parser->mark.column = 0,                                                 \
-       parser->mark.line ++,                                                    \
-       parser->unread -= 2,                                                     \
-       parser->buffer.pointer += 2) :                                           \
-      IS_BREAK(parser->buffer) ?                                                \
-      (parser->mark.index ++,                                                   \
-       parser->mark.column = 0,                                                 \
-       parser->mark.line ++,                                                    \
-       parser->unread --,                                                       \
-       parser->buffer.pointer += WIDTH(parser->buffer)) : 0)
-
-/*
- * Copy a character to a string buffer and advance pointers.
- */
-
-#define READ(parser,string)                                                     \
-     (STRING_EXTEND(parser,string) ?                                            \
-         (COPY(string,parser->buffer),                                          \
-          parser->mark.index ++,                                                \
-          parser->mark.column ++,                                               \
-          parser->unread --,                                                    \
-          1) : 0)
-
-/*
- * Copy a line break character to a string buffer and advance pointers.
- */
-
-#define READ_LINE(parser,string)                                                \
-    (STRING_EXTEND(parser,string) ?                                             \
-    (((CHECK_AT(parser->buffer,'\r',0)                                          \
-       && CHECK_AT(parser->buffer,'\n',1)) ?        /* CR LF -> LF */           \
-     (*((string).pointer++) = (yaml_char_t) '\n',                               \
-      parser->buffer.pointer += 2,                                              \
-      parser->mark.index += 2,                                                  \
-      parser->mark.column = 0,                                                  \
-      parser->mark.line ++,                                                     \
-      parser->unread -= 2) :                                                    \
-     (CHECK_AT(parser->buffer,'\r',0)                                           \
-      || CHECK_AT(parser->buffer,'\n',0)) ?         /* CR|LF -> LF */           \
-     (*((string).pointer++) = (yaml_char_t) '\n',                               \
-      parser->buffer.pointer ++,                                                \
-      parser->mark.index ++,                                                    \
-      parser->mark.column = 0,                                                  \
-      parser->mark.line ++,                                                     \
-      parser->unread --) :                                                      \
-     (CHECK_AT(parser->buffer,'\xC2',0)                                         \
-      && CHECK_AT(parser->buffer,'\x85',1)) ?       /* NEL -> LF */             \
-     (*((string).pointer++) = (yaml_char_t) '\n',                               \
-      parser->buffer.pointer += 2,                                              \
-      parser->mark.index ++,                                                    \
-      parser->mark.column = 0,                                                  \
-      parser->mark.line ++,                                                     \
-      parser->unread --) :                                                      \
-     (CHECK_AT(parser->buffer,'\xE2',0) &&                                      \
-      CHECK_AT(parser->buffer,'\x80',1) &&                                      \
-      (CHECK_AT(parser->buffer,'\xA8',2) ||                                     \
-       CHECK_AT(parser->buffer,'\xA9',2))) ?        /* LS|PS -> LS|PS */        \
-     (*((string).pointer++) = *(parser->buffer.pointer++),                      \
-      *((string).pointer++) = *(parser->buffer.pointer++),                      \
-      *((string).pointer++) = *(parser->buffer.pointer++),                      \
-      parser->mark.index ++,                                                    \
-      parser->mark.column = 0,                                                  \
-      parser->mark.line ++,                                                     \
-      parser->unread --) : 0),                                                  \
-    1) : 0)
-
-/*
- * Public API declarations.
- */
-
-YAML_DECLARE(int)
-yaml_parser_scan(yaml_parser_t *parser, yaml_token_t *token);
-
-/*
- * Error handling.
- */
-
-static int
-yaml_parser_set_scanner_error(yaml_parser_t *parser, const char *context,
-        yaml_mark_t context_mark, const char *problem);
-
-/*
- * High-level token API.
- */
-
-YAML_DECLARE(int)
-yaml_parser_fetch_more_tokens(yaml_parser_t *parser);
-
-static int
-yaml_parser_fetch_next_token(yaml_parser_t *parser);
-
-/*
- * Potential simple keys.
- */
-
-static int
-yaml_parser_stale_simple_keys(yaml_parser_t *parser);
-
-static int
-yaml_parser_save_simple_key(yaml_parser_t *parser);
-
-static int
-yaml_parser_remove_simple_key(yaml_parser_t *parser);
-
-static int
-yaml_parser_increase_flow_level(yaml_parser_t *parser);
-
-static int
-yaml_parser_decrease_flow_level(yaml_parser_t *parser);
-
-/*
- * Indentation treatment.
- */
-
-static int
-yaml_parser_roll_indent(yaml_parser_t *parser, int column,
-        int number, yaml_token_type_t type, yaml_mark_t mark);
-
-static int
-yaml_parser_unroll_indent(yaml_parser_t *parser, int column);
-
-/*
- * Token fetchers.
- */
-
-static int
-yaml_parser_fetch_stream_start(yaml_parser_t *parser);
-
-static int
-yaml_parser_fetch_stream_end(yaml_parser_t *parser);
-
-static int
-yaml_parser_fetch_directive(yaml_parser_t *parser);
-
-static int
-yaml_parser_fetch_document_indicator(yaml_parser_t *parser,
-        yaml_token_type_t type);
-
-static int
-yaml_parser_fetch_flow_collection_start(yaml_parser_t *parser,
-        yaml_token_type_t type);
-
-static int
-yaml_parser_fetch_flow_collection_end(yaml_parser_t *parser,
-        yaml_token_type_t type);
-
-static int
-yaml_parser_fetch_flow_entry(yaml_parser_t *parser);
-
-static int
-yaml_parser_fetch_block_entry(yaml_parser_t *parser);
-
-static int
-yaml_parser_fetch_key(yaml_parser_t *parser);
-
-static int
-yaml_parser_fetch_value(yaml_parser_t *parser);
-
-static int
-yaml_parser_fetch_anchor(yaml_parser_t *parser, yaml_token_type_t type);
-
-static int
-yaml_parser_fetch_tag(yaml_parser_t *parser);
-
-static int
-yaml_parser_fetch_block_scalar(yaml_parser_t *parser, int literal);
-
-static int
-yaml_parser_fetch_flow_scalar(yaml_parser_t *parser, int single);
-
-static int
-yaml_parser_fetch_plain_scalar(yaml_parser_t *parser);
-
-/*
- * Token scanners.
- */
-
-static int
-yaml_parser_scan_to_next_token(yaml_parser_t *parser);
-
-static int
-yaml_parser_scan_directive(yaml_parser_t *parser, yaml_token_t *token);
-
-static int
-yaml_parser_scan_directive_name(yaml_parser_t *parser,
-        yaml_mark_t start_mark, yaml_char_t **name);
-
-static int
-yaml_parser_scan_version_directive_value(yaml_parser_t *parser,
-        yaml_mark_t start_mark, int *major, int *minor);
-
-static int
-yaml_parser_scan_version_directive_number(yaml_parser_t *parser,
-        yaml_mark_t start_mark, int *number);
-
-static int
-yaml_parser_scan_tag_directive_value(yaml_parser_t *parser,
-        yaml_mark_t mark, yaml_char_t **handle, yaml_char_t **prefix);
-
-static int
-yaml_parser_scan_anchor(yaml_parser_t *parser, yaml_token_t *token,
-        yaml_token_type_t type);
-
-static int
-yaml_parser_scan_tag(yaml_parser_t *parser, yaml_token_t *token);
-
-static int
-yaml_parser_scan_tag_handle(yaml_parser_t *parser, int directive,
-        yaml_mark_t start_mark, yaml_char_t **handle);
-
-static int
-yaml_parser_scan_tag_uri(yaml_parser_t *parser, int directive,
-        yaml_char_t *head, yaml_mark_t start_mark, yaml_char_t **uri);
-
-static int
-yaml_parser_scan_uri_escapes(yaml_parser_t *parser, int directive,
-        yaml_mark_t start_mark, yaml_string_t *string);
-
-static int
-yaml_parser_scan_block_scalar(yaml_parser_t *parser, yaml_token_t *token,
-        int literal);
-
-static int
-yaml_parser_scan_block_scalar_breaks(yaml_parser_t *parser,
-        int *indent, yaml_string_t *breaks,
-        yaml_mark_t start_mark, yaml_mark_t *end_mark);
-
-static int
-yaml_parser_scan_flow_scalar(yaml_parser_t *parser, yaml_token_t *token,
-        int single);
-
-static int
-yaml_parser_scan_plain_scalar(yaml_parser_t *parser, yaml_token_t *token);
-
-/*
- * Get the next token.
- */
-
-YAML_DECLARE(int)
-yaml_parser_scan(yaml_parser_t *parser, yaml_token_t *token)
-{
-    assert(parser); /* Non-NULL parser object is expected. */
-    assert(token);  /* Non-NULL token object is expected. */
-
-    /* Erase the token object. */
-
-    memset(token, 0, sizeof(yaml_token_t));
-
-    /* No tokens after STREAM-END or error. */
-
-    if (parser->stream_end_produced || parser->error) {
-        return 1;
-    }
-
-    /* Ensure that the tokens queue contains enough tokens. */
-
-    if (!parser->token_available) {
-        if (!yaml_parser_fetch_more_tokens(parser))
-            return 0;
-    }
-
-    /* Fetch the next token from the queue. */
-    
-    *token = DEQUEUE(parser, parser->tokens);
-    parser->token_available = 0;
-    parser->tokens_parsed ++;
-
-    if (token->type == YAML_STREAM_END_TOKEN) {
-        parser->stream_end_produced = 1;
-    }
-
-    return 1;
-}
-
-/*
- * Set the scanner error and return 0.
- */
-
-static int
-yaml_parser_set_scanner_error(yaml_parser_t *parser, const char *context,
-        yaml_mark_t context_mark, const char *problem)
-{
-    parser->error = YAML_SCANNER_ERROR;
-    parser->context = context;
-    parser->context_mark = context_mark;
-    parser->problem = problem;
-    parser->problem_mark = parser->mark;
-
-    return 0;
-}
-
-/*
- * Ensure that the tokens queue contains at least one token which can be
- * returned to the Parser.
- */
-
-YAML_DECLARE(int)
-yaml_parser_fetch_more_tokens(yaml_parser_t *parser)
-{
-    int need_more_tokens;
-
-    /* While we need more tokens to fetch, do it. */
-
-    while (1)
-    {
-        /*
-         * Check if we really need to fetch more tokens.
-         */
-
-        need_more_tokens = 0;
-
-        if (parser->tokens.head == parser->tokens.tail)
-        {
-            /* Queue is empty. */
-
-            need_more_tokens = 1;
-        }
-        else
-        {
-            yaml_simple_key_t *simple_key;
-
-            /* Check if any potential simple key may occupy the head position. */
-
-            if (!yaml_parser_stale_simple_keys(parser))
-                return 0;
-
-            for (simple_key = parser->simple_keys.start;
-                    simple_key != parser->simple_keys.top; simple_key++) {
-                if (simple_key->possible
-                        && simple_key->token_number == parser->tokens_parsed) {
-                    need_more_tokens = 1;
-                    break;
-                }
-            }
-        }
-
-        /* We are finished. */
-
-        if (!need_more_tokens)
-            break;
-
-        /* Fetch the next token. */
-
-        if (!yaml_parser_fetch_next_token(parser))
-            return 0;
-    }
-
-    parser->token_available = 1;
-
-    return 1;
-}
-
-/*
- * The dispatcher for token fetchers.
- */
-
-static int
-yaml_parser_fetch_next_token(yaml_parser_t *parser)
-{
-    /* Ensure that the buffer is initialized. */
-
-    if (!CACHE(parser, 1))
-        return 0;
-
-    /* Check if we just started scanning.  Fetch STREAM-START then. */
-
-    if (!parser->stream_start_produced)
-        return yaml_parser_fetch_stream_start(parser);
-
-    /* Eat whitespaces and comments until we reach the next token. */
-
-    if (!yaml_parser_scan_to_next_token(parser))
-        return 0;
-
-    /* Remove obsolete potential simple keys. */
-
-    if (!yaml_parser_stale_simple_keys(parser))
-        return 0;
-
-    /* Check the indentation level against the current column. */
-
-    if (!yaml_parser_unroll_indent(parser, parser->mark.column))
-        return 0;
-
-    /*
-     * Ensure that the buffer contains at least 4 characters.  4 is the length
-     * of the longest indicators ('--- ' and '... ').
-     */
-
-    if (!CACHE(parser, 4))
-        return 0;
-
-    /* Is it the end of the stream? */
-
-    if (IS_Z(parser->buffer))
-        return yaml_parser_fetch_stream_end(parser);
-
-    /* Is it a directive? */
-
-    if (parser->mark.column == 0 && CHECK(parser->buffer, '%'))
-        return yaml_parser_fetch_directive(parser);
-
-    /* Is it the document start indicator? */
-
-    if (parser->mark.column == 0
-            && CHECK_AT(parser->buffer, '-', 0)
-            && CHECK_AT(parser->buffer, '-', 1)
-            && CHECK_AT(parser->buffer, '-', 2)
-            && IS_BLANKZ_AT(parser->buffer, 3))
-        return yaml_parser_fetch_document_indicator(parser,
-                YAML_DOCUMENT_START_TOKEN);
-
-    /* Is it the document end indicator? */
-
-    if (parser->mark.column == 0
-            && CHECK_AT(parser->buffer, '.', 0)
-            && CHECK_AT(parser->buffer, '.', 1)
-            && CHECK_AT(parser->buffer, '.', 2)
-            && IS_BLANKZ_AT(parser->buffer, 3))
-        return yaml_parser_fetch_document_indicator(parser,
-                YAML_DOCUMENT_END_TOKEN);
-
-    /* Is it the flow sequence start indicator? */
-
-    if (CHECK(parser->buffer, '['))
-        return yaml_parser_fetch_flow_collection_start(parser,
-                YAML_FLOW_SEQUENCE_START_TOKEN);
-
-    /* Is it the flow mapping start indicator? */
-
-    if (CHECK(parser->buffer, '{'))
-        return yaml_parser_fetch_flow_collection_start(parser,
-                YAML_FLOW_MAPPING_START_TOKEN);
-
-    /* Is it the flow sequence end indicator? */
-
-    if (CHECK(parser->buffer, ']'))
-        return yaml_parser_fetch_flow_collection_end(parser,
-                YAML_FLOW_SEQUENCE_END_TOKEN);
-
-    /* Is it the flow mapping end indicator? */
-
-    if (CHECK(parser->buffer, '}'))
-        return yaml_parser_fetch_flow_collection_end(parser,
-                YAML_FLOW_MAPPING_END_TOKEN);
-
-    /* Is it the flow entry indicator? */
-
-    if (CHECK(parser->buffer, ','))
-        return yaml_parser_fetch_flow_entry(parser);
-
-    /* Is it the block entry indicator? */
-
-    if (CHECK(parser->buffer, '-') && IS_BLANKZ_AT(parser->buffer, 1))
-        return yaml_parser_fetch_block_entry(parser);
-
-    /* Is it the key indicator? */
-
-    if (CHECK(parser->buffer, '?')
-            && (parser->flow_level || IS_BLANKZ_AT(parser->buffer, 1)))
-        return yaml_parser_fetch_key(parser);
-
-    /* Is it the value indicator? */
-
-    if (CHECK(parser->buffer, ':')
-            && (parser->flow_level || IS_BLANKZ_AT(parser->buffer, 1)))
-        return yaml_parser_fetch_value(parser);
-
-    /* Is it an alias? */
-
-    if (CHECK(parser->buffer, '*'))
-        return yaml_parser_fetch_anchor(parser, YAML_ALIAS_TOKEN);
-
-    /* Is it an anchor? */
-
-    if (CHECK(parser->buffer, '&'))
-        return yaml_parser_fetch_anchor(parser, YAML_ANCHOR_TOKEN);
-
-    /* Is it a tag? */
-
-    if (CHECK(parser->buffer, '!'))
-        return yaml_parser_fetch_tag(parser);
-
-    /* Is it a literal scalar? */
-
-    if (CHECK(parser->buffer, '|') && !parser->flow_level)
-        return yaml_parser_fetch_block_scalar(parser, 1);
-
-    /* Is it a folded scalar? */
-
-    if (CHECK(parser->buffer, '>') && !parser->flow_level)
-        return yaml_parser_fetch_block_scalar(parser, 0);
-
-    /* Is it a single-quoted scalar? */
-
-    if (CHECK(parser->buffer, '\''))
-        return yaml_parser_fetch_flow_scalar(parser, 1);
-
-    /* Is it a double-quoted scalar? */
-
-    if (CHECK(parser->buffer, '"'))
-        return yaml_parser_fetch_flow_scalar(parser, 0);
-
-    /*
-     * Is it a plain scalar?
-     *
-     * A plain scalar may start with any non-blank characters except
-     *
-     *      '-', '?', ':', ',', '[', ']', '{', '}',
-     *      '#', '&', '*', '!', '|', '>', '\'', '\"',
-     *      '%', '@', '`'.
-     *
-     * In the block context (and, for the '-' indicator, in the flow context
-     * too), it may also start with the characters
-     *
-     *      '-', '?', ':'
-     *
-     * if it is followed by a non-space character.
-     *
-     * The last rule is more restrictive than the specification requires.
-     */
-
-    if (!(IS_BLANKZ(parser->buffer) || CHECK(parser->buffer, '-')
-                || CHECK(parser->buffer, '?') || CHECK(parser->buffer, ':')
-                || CHECK(parser->buffer, ',') || CHECK(parser->buffer, '[')
-                || CHECK(parser->buffer, ']') || CHECK(parser->buffer, '{')
-                || CHECK(parser->buffer, '}') || CHECK(parser->buffer, '#')
-                || CHECK(parser->buffer, '&') || CHECK(parser->buffer, '*')
-                || CHECK(parser->buffer, '!') || CHECK(parser->buffer, '|')
-                || CHECK(parser->buffer, '>') || CHECK(parser->buffer, '\'')
-                || CHECK(parser->buffer, '"') || CHECK(parser->buffer, '%')
-                || CHECK(parser->buffer, '@') || CHECK(parser->buffer, '`')) ||
-            (CHECK(parser->buffer, '-') && !IS_BLANK_AT(parser->buffer, 1)) ||
-            (!parser->flow_level &&
-             (CHECK(parser->buffer, '?') || CHECK(parser->buffer, ':'))
-             && !IS_BLANKZ_AT(parser->buffer, 1)))
-        return yaml_parser_fetch_plain_scalar(parser);
-
-    /*
-     * If we don't determine the token type so far, it is an error.
-     */
-
-    return yaml_parser_set_scanner_error(parser,
-            "while scanning for the next token", parser->mark,
-            "found character that cannot start any token");
-}
-
-/*
- * Check the list of potential simple keys and remove the positions that
- * cannot contain simple keys anymore.
- */
-
-static int
-yaml_parser_stale_simple_keys(yaml_parser_t *parser)
-{
-    yaml_simple_key_t *simple_key;
-
-    /* Check for a potential simple key for each flow level. */
-
-    for (simple_key = parser->simple_keys.start;
-            simple_key != parser->simple_keys.top; simple_key ++)
-    {
-        /*
-         * The specification requires that a simple key
-         *
-         *  - is limited to a single line,
-         *  - is shorter than 1024 characters.
-         */
-
-        if (simple_key->possible
-                && (simple_key->mark.line < parser->mark.line
-                    || simple_key->mark.index+1024 < parser->mark.index)) {
-
-            /* Check if the potential simple key to be removed is required. */
-
-            if (simple_key->required) {
-                return yaml_parser_set_scanner_error(parser,
-                        "while scanning a simple key", simple_key->mark,
-                        "could not find expected ':'");
-            }
-
-            simple_key->possible = 0;
-        }
-    }
-
-    return 1;
-}
-
-/*
- * Check if a simple key may start at the current position and add it if
- * needed.
- */
-
-static int
-yaml_parser_save_simple_key(yaml_parser_t *parser)
-{
-    /*
-     * A simple key is required at the current position if the scanner is in
-     * the block context and the current column coincides with the indentation
-     * level.
-     */
-
-    int required = (!parser->flow_level
-            && parser->indent == (int)parser->mark.column);
-
-    /*
-     * A simple key is required only when it is the first token in the current
-     * line.  Therefore it is always allowed.  But we add a check anyway.
-     */
-
-    assert(parser->simple_key_allowed || !required);    /* Impossible. */
-
-    /*
-     * If the current position may start a simple key, save it.
-     */
-
-    if (parser->simple_key_allowed)
-    {
-        yaml_simple_key_t simple_key;
-        simple_key.possible = 1;
-        simple_key.required = required;
-        simple_key.token_number = 
-            parser->tokens_parsed + (parser->tokens.tail - parser->tokens.head);
-        simple_key.mark = parser->mark;
-
-        if (!yaml_parser_remove_simple_key(parser)) return 0;
-
-        *(parser->simple_keys.top-1) = simple_key;
-    }
-
-    return 1;
-}
-
-/*
- * Remove a potential simple key at the current flow level.
- */
-
-static int
-yaml_parser_remove_simple_key(yaml_parser_t *parser)
-{
-    yaml_simple_key_t *simple_key = parser->simple_keys.top-1;
-
-    if (simple_key->possible)
-    {
-        /* If the key is required, it is an error. */
-
-        if (simple_key->required) {
-            return yaml_parser_set_scanner_error(parser,
-                    "while scanning a simple key", simple_key->mark,
-                    "could not find expected ':'");
-        }
-    }
-
-    /* Remove the key from the stack. */
-
-    simple_key->possible = 0;
-
-    return 1;
-}
-
-/*
- * Increase the flow level and resize the simple key list if needed.
- */
-
-static int
-yaml_parser_increase_flow_level(yaml_parser_t *parser)
-{
-    yaml_simple_key_t empty_simple_key = { 0, 0, 0, { 0, 0, 0 } };
-
-    /* Reset the simple key on the next level. */
-
-    if (!PUSH(parser, parser->simple_keys, empty_simple_key))
-        return 0;
-
-    /* Increase the flow level. */
-
-    parser->flow_level++;
-
-    return 1;
-}
-
-/*
- * Decrease the flow level.
- */
-
-static int
-yaml_parser_decrease_flow_level(yaml_parser_t *parser)
-{
-    yaml_simple_key_t dummy_key;    /* Used to eliminate a compiler warning. */
-
-    if (parser->flow_level) {
-        parser->flow_level --;
-        dummy_key = POP(parser, parser->simple_keys);
-    }
-
-    return 1;
-}
-
-/*
- * Push the current indentation level to the stack and set the new level
- * the current column is greater than the indentation level.  In this case,
- * append or insert the specified token into the token queue.
- * 
- */
-
-static int
-yaml_parser_roll_indent(yaml_parser_t *parser, int column,
-        int number, yaml_token_type_t type, yaml_mark_t mark)
-{
-    yaml_token_t token;
-
-    /* In the flow context, do nothing. */
-
-    if (parser->flow_level)
-        return 1;
-
-    if (parser->indent < column)
-    {
-        /*
-         * Push the current indentation level to the stack and set the new
-         * indentation level.
-         */
-
-        if (!PUSH(parser, parser->indents, parser->indent))
-            return 0;
-
-        parser->indent = column;
-
-        /* Create a token and insert it into the queue. */
-
-        TOKEN_INIT(token, type, mark, mark);
-
-        if (number == -1) {
-            if (!ENQUEUE(parser, parser->tokens, token))
-                return 0;
-        }
-        else {
-            if (!QUEUE_INSERT(parser,
-                        parser->tokens, number - parser->tokens_parsed, token))
-                return 0;
-        }
-    }
-
-    return 1;
-}
-
-/*
- * Pop indentation levels from the indents stack until the current level
- * becomes less or equal to the column.  For each intendation level, append
- * the BLOCK-END token.
- */
-
-
-static int
-yaml_parser_unroll_indent(yaml_parser_t *parser, int column)
-{
-    yaml_token_t token;
-
-    /* In the flow context, do nothing. */
-
-    if (parser->flow_level)
-        return 1;
-
-    /* Loop through the intendation levels in the stack. */
-
-    while (parser->indent > column)
-    {
-        /* Create a token and append it to the queue. */
-
-        TOKEN_INIT(token, YAML_BLOCK_END_TOKEN, parser->mark, parser->mark);
-
-        if (!ENQUEUE(parser, parser->tokens, token))
-            return 0;
-
-        /* Pop the indentation level. */
-
-        parser->indent = POP(parser, parser->indents);
-    }
-
-    return 1;
-}
-
-/*
- * Initialize the scanner and produce the STREAM-START token.
- */
-
-static int
-yaml_parser_fetch_stream_start(yaml_parser_t *parser)
-{
-    yaml_simple_key_t simple_key = { 0, 0, 0, { 0, 0, 0 } };
-    yaml_token_t token;
-
-    /* Set the initial indentation. */
-
-    parser->indent = -1;
-
-    /* Initialize the simple key stack. */
-
-    if (!PUSH(parser, parser->simple_keys, simple_key))
-        return 0;
-
-    /* A simple key is allowed at the beginning of the stream. */
-
-    parser->simple_key_allowed = 1;
-
-    /* We have started. */
-
-    parser->stream_start_produced = 1;
-
-    /* Create the STREAM-START token and append it to the queue. */
-
-    STREAM_START_TOKEN_INIT(token, parser->encoding,
-            parser->mark, parser->mark);
-
-    if (!ENQUEUE(parser, parser->tokens, token))
-        return 0;
-
-    return 1;
-}
-
-/*
- * Produce the STREAM-END token and shut down the scanner.
- */
-
-static int
-yaml_parser_fetch_stream_end(yaml_parser_t *parser)
-{
-    yaml_token_t token;
-
-    /* Force new line. */
-
-    if (parser->mark.column != 0) {
-        parser->mark.column = 0;
-        parser->mark.line ++;
-    }
-
-    /* Reset the indentation level. */
-
-    if (!yaml_parser_unroll_indent(parser, -1))
-        return 0;
-
-    /* Reset simple keys. */
-
-    if (!yaml_parser_remove_simple_key(parser))
-        return 0;
-
-    parser->simple_key_allowed = 0;
-
-    /* Create the STREAM-END token and append it to the queue. */
-
-    STREAM_END_TOKEN_INIT(token, parser->mark, parser->mark);
-
-    if (!ENQUEUE(parser, parser->tokens, token))
-        return 0;
-
-    return 1;
-}
-
-/*
- * Produce a VERSION-DIRECTIVE or TAG-DIRECTIVE token.
- */
-
-static int
-yaml_parser_fetch_directive(yaml_parser_t *parser)
-{
-    yaml_token_t token;
-
-    /* Reset the indentation level. */
-
-    if (!yaml_parser_unroll_indent(parser, -1))
-        return 0;
-
-    /* Reset simple keys. */
-
-    if (!yaml_parser_remove_simple_key(parser))
-        return 0;
-
-    parser->simple_key_allowed = 0;
-
-    /* Create the YAML-DIRECTIVE or TAG-DIRECTIVE token. */
-
-    if (!yaml_parser_scan_directive(parser, &token))
-        return 0;
-
-    /* Append the token to the queue. */
-
-    if (!ENQUEUE(parser, parser->tokens, token)) {
-        yaml_token_delete(&token);
-        return 0;
-    }
-
-    return 1;
-}
-
-/*
- * Produce the DOCUMENT-START or DOCUMENT-END token.
- */
-
-static int
-yaml_parser_fetch_document_indicator(yaml_parser_t *parser,
-        yaml_token_type_t type)
-{
-    yaml_mark_t start_mark, end_mark;
-    yaml_token_t token;
-
-    /* Reset the indentation level. */
-
-    if (!yaml_parser_unroll_indent(parser, -1))
-        return 0;
-
-    /* Reset simple keys. */
-
-    if (!yaml_parser_remove_simple_key(parser))
-        return 0;
-
-    parser->simple_key_allowed = 0;
-
-    /* Consume the token. */
-
-    start_mark = parser->mark;
-
-    SKIP(parser);
-    SKIP(parser);
-    SKIP(parser);
-
-    end_mark = parser->mark;
-
-    /* Create the DOCUMENT-START or DOCUMENT-END token. */
-
-    TOKEN_INIT(token, type, start_mark, end_mark);
-
-    /* Append the token to the queue. */
-
-    if (!ENQUEUE(parser, parser->tokens, token))
-        return 0;
-
-    return 1;
-}
-
-/*
- * Produce the FLOW-SEQUENCE-START or FLOW-MAPPING-START token.
- */
-
-static int
-yaml_parser_fetch_flow_collection_start(yaml_parser_t *parser,
-        yaml_token_type_t type)
-{
-    yaml_mark_t start_mark, end_mark;
-    yaml_token_t token;
-
-    /* The indicators '[' and '{' may start a simple key. */
-
-    if (!yaml_parser_save_simple_key(parser))
-        return 0;
-
-    /* Increase the flow level. */
-
-    if (!yaml_parser_increase_flow_level(parser))
-        return 0;
-
-    /* A simple key may follow the indicators '[' and '{'. */
-
-    parser->simple_key_allowed = 1;
-
-    /* Consume the token. */
-
-    start_mark = parser->mark;
-    SKIP(parser);
-    end_mark = parser->mark;
-
-    /* Create the FLOW-SEQUENCE-START of FLOW-MAPPING-START token. */
-
-    TOKEN_INIT(token, type, start_mark, end_mark);
-
-    /* Append the token to the queue. */
-
-    if (!ENQUEUE(parser, parser->tokens, token))
-        return 0;
-
-    return 1;
-}
-
-/*
- * Produce the FLOW-SEQUENCE-END or FLOW-MAPPING-END token.
- */
-
-static int
-yaml_parser_fetch_flow_collection_end(yaml_parser_t *parser,
-        yaml_token_type_t type)
-{
-    yaml_mark_t start_mark, end_mark;
-    yaml_token_t token;
-
-    /* Reset any potential simple key on the current flow level. */
-
-    if (!yaml_parser_remove_simple_key(parser))
-        return 0;
-
-    /* Decrease the flow level. */
-
-    if (!yaml_parser_decrease_flow_level(parser))
-        return 0;
-
-    /* No simple keys after the indicators ']' and '}'. */
-
-    parser->simple_key_allowed = 0;
-
-    /* Consume the token. */
-
-    start_mark = parser->mark;
-    SKIP(parser);
-    end_mark = parser->mark;
-
-    /* Create the FLOW-SEQUENCE-END of FLOW-MAPPING-END token. */
-
-    TOKEN_INIT(token, type, start_mark, end_mark);
-
-    /* Append the token to the queue. */
-
-    if (!ENQUEUE(parser, parser->tokens, token))
-        return 0;
-
-    return 1;
-}
-
-/*
- * Produce the FLOW-ENTRY token.
- */
-
-static int
-yaml_parser_fetch_flow_entry(yaml_parser_t *parser)
-{
-    yaml_mark_t start_mark, end_mark;
-    yaml_token_t token;
-
-    /* Reset any potential simple keys on the current flow level. */
-
-    if (!yaml_parser_remove_simple_key(parser))
-        return 0;
-
-    /* Simple keys are allowed after ','. */
-
-    parser->simple_key_allowed = 1;
-
-    /* Consume the token. */
-
-    start_mark = parser->mark;
-    SKIP(parser);
-    end_mark = parser->mark;
-
-    /* Create the FLOW-ENTRY token and append it to the queue. */
-
-    TOKEN_INIT(token, YAML_FLOW_ENTRY_TOKEN, start_mark, end_mark);
-
-    if (!ENQUEUE(parser, parser->tokens, token))
-        return 0;
-
-    return 1;
-}
-
-/*
- * Produce the BLOCK-ENTRY token.
- */
-
-static int
-yaml_parser_fetch_block_entry(yaml_parser_t *parser)
-{
-    yaml_mark_t start_mark, end_mark;
-    yaml_token_t token;
-
-    /* Check if the scanner is in the block context. */
-
-    if (!parser->flow_level)
-    {
-        /* Check if we are allowed to start a new entry. */
-
-        if (!parser->simple_key_allowed) {
-            return yaml_parser_set_scanner_error(parser, NULL, parser->mark,
-                    "block sequence entries are not allowed in this context");
-        }
-
-        /* Add the BLOCK-SEQUENCE-START token if needed. */
-
-        if (!yaml_parser_roll_indent(parser, parser->mark.column, -1,
-                    YAML_BLOCK_SEQUENCE_START_TOKEN, parser->mark))
-            return 0;
-    }
-    else
-    {
-        /*
-         * It is an error for the '-' indicator to occur in the flow context,
-         * but we let the Parser detect and report about it because the Parser
-         * is able to point to the context.
-         */
-    }
-
-    /* Reset any potential simple keys on the current flow level. */
-
-    if (!yaml_parser_remove_simple_key(parser))
-        return 0;
-
-    /* Simple keys are allowed after '-'. */
-
-    parser->simple_key_allowed = 1;
-
-    /* Consume the token. */
-
-    start_mark = parser->mark;
-    SKIP(parser);
-    end_mark = parser->mark;
-
-    /* Create the BLOCK-ENTRY token and append it to the queue. */
-
-    TOKEN_INIT(token, YAML_BLOCK_ENTRY_TOKEN, start_mark, end_mark);
-
-    if (!ENQUEUE(parser, parser->tokens, token))
-        return 0;
-
-    return 1;
-}
-
-/*
- * Produce the KEY token.
- */
-
-static int
-yaml_parser_fetch_key(yaml_parser_t *parser)
-{
-    yaml_mark_t start_mark, end_mark;
-    yaml_token_t token;
-
-    /* In the block context, additional checks are required. */
-
-    if (!parser->flow_level)
-    {
-        /* Check if we are allowed to start a new key (not nessesary simple). */
-
-        if (!parser->simple_key_allowed) {
-            return yaml_parser_set_scanner_error(parser, NULL, parser->mark,
-                    "mapping keys are not allowed in this context");
-        }
-
-        /* Add the BLOCK-MAPPING-START token if needed. */
-
-        if (!yaml_parser_roll_indent(parser, parser->mark.column, -1,
-                    YAML_BLOCK_MAPPING_START_TOKEN, parser->mark))
-            return 0;
-    }
-
-    /* Reset any potential simple keys on the current flow level. */
-
-    if (!yaml_parser_remove_simple_key(parser))
-        return 0;
-
-    /* Simple keys are allowed after '?' in the block context. */
-
-    parser->simple_key_allowed = (!parser->flow_level);
-
-    /* Consume the token. */
-
-    start_mark = parser->mark;
-    SKIP(parser);
-    end_mark = parser->mark;
-
-    /* Create the KEY token and append it to the queue. */
-
-    TOKEN_INIT(token, YAML_KEY_TOKEN, start_mark, end_mark);
-
-    if (!ENQUEUE(parser, parser->tokens, token))
-        return 0;
-
-    return 1;
-}
-
-/*
- * Produce the VALUE token.
- */
-
-static int
-yaml_parser_fetch_value(yaml_parser_t *parser)
-{
-    yaml_mark_t start_mark, end_mark;
-    yaml_token_t token;
-    yaml_simple_key_t *simple_key = parser->simple_keys.top-1;
-
-    /* Have we found a simple key? */
-
-    if (simple_key->possible)
-    {
-
-        /* Create the KEY token and insert it into the queue. */
-
-        TOKEN_INIT(token, YAML_KEY_TOKEN, simple_key->mark, simple_key->mark);
-
-        if (!QUEUE_INSERT(parser, parser->tokens,
-                    simple_key->token_number - parser->tokens_parsed, token))
-            return 0;
-
-        /* In the block context, we may need to add the BLOCK-MAPPING-START token. */
-
-        if (!yaml_parser_roll_indent(parser, simple_key->mark.column,
-                    simple_key->token_number,
-                    YAML_BLOCK_MAPPING_START_TOKEN, simple_key->mark))
-            return 0;
-
-        /* Remove the simple key. */
-
-        simple_key->possible = 0;
-
-        /* A simple key cannot follow another simple key. */
-
-        parser->simple_key_allowed = 0;
-    }
-    else
-    {
-        /* The ':' indicator follows a complex key. */
-
-        /* In the block context, extra checks are required. */
-
-        if (!parser->flow_level)
-        {
-            /* Check if we are allowed to start a complex value. */
-
-            if (!parser->simple_key_allowed) {
-                return yaml_parser_set_scanner_error(parser, NULL, parser->mark,
-                        "mapping values are not allowed in this context");
-            }
-
-            /* Add the BLOCK-MAPPING-START token if needed. */
-
-            if (!yaml_parser_roll_indent(parser, parser->mark.column, -1,
-                        YAML_BLOCK_MAPPING_START_TOKEN, parser->mark))
-                return 0;
-        }
-
-        /* Simple keys after ':' are allowed in the block context. */
-
-        parser->simple_key_allowed = (!parser->flow_level);
-    }
-
-    /* Consume the token. */
-
-    start_mark = parser->mark;
-    SKIP(parser);
-    end_mark = parser->mark;
-
-    /* Create the VALUE token and append it to the queue. */
-
-    TOKEN_INIT(token, YAML_VALUE_TOKEN, start_mark, end_mark);
-
-    if (!ENQUEUE(parser, parser->tokens, token))
-        return 0;
-
-    return 1;
-}
-
-/*
- * Produce the ALIAS or ANCHOR token.
- */
-
-static int
-yaml_parser_fetch_anchor(yaml_parser_t *parser, yaml_token_type_t type)
-{
-    yaml_token_t token;
-
-    /* An anchor or an alias could be a simple key. */
-
-    if (!yaml_parser_save_simple_key(parser))
-        return 0;
-
-    /* A simple key cannot follow an anchor or an alias. */
-
-    parser->simple_key_allowed = 0;
-
-    /* Create the ALIAS or ANCHOR token and append it to the queue. */
-
-    if (!yaml_parser_scan_anchor(parser, &token, type))
-        return 0;
-
-    if (!ENQUEUE(parser, parser->tokens, token)) {
-        yaml_token_delete(&token);
-        return 0;
-    }
-    return 1;
-}
-
-/*
- * Produce the TAG token.
- */
-
-static int
-yaml_parser_fetch_tag(yaml_parser_t *parser)
-{
-    yaml_token_t token;
-
-    /* A tag could be a simple key. */
-
-    if (!yaml_parser_save_simple_key(parser))
-        return 0;
-
-    /* A simple key cannot follow a tag. */
-
-    parser->simple_key_allowed = 0;
-
-    /* Create the TAG token and append it to the queue. */
-
-    if (!yaml_parser_scan_tag(parser, &token))
-        return 0;
-
-    if (!ENQUEUE(parser, parser->tokens, token)) {
-        yaml_token_delete(&token);
-        return 0;
-    }
-
-    return 1;
-}
-
-/*
- * Produce the SCALAR(...,literal) or SCALAR(...,folded) tokens.
- */
-
-static int
-yaml_parser_fetch_block_scalar(yaml_parser_t *parser, int literal)
-{
-    yaml_token_t token;
-
-    /* Remove any potential simple keys. */
-
-    if (!yaml_parser_remove_simple_key(parser))
-        return 0;
-
-    /* A simple key may follow a block scalar. */
-
-    parser->simple_key_allowed = 1;
-
-    /* Create the SCALAR token and append it to the queue. */
-
-    if (!yaml_parser_scan_block_scalar(parser, &token, literal))
-        return 0;
-
-    if (!ENQUEUE(parser, parser->tokens, token)) {
-        yaml_token_delete(&token);
-        return 0;
-    }
-
-    return 1;
-}
-
-/*
- * Produce the SCALAR(...,single-quoted) or SCALAR(...,double-quoted) tokens.
- */
-
-static int
-yaml_parser_fetch_flow_scalar(yaml_parser_t *parser, int single)
-{
-    yaml_token_t token;
-
-    /* A plain scalar could be a simple key. */
-
-    if (!yaml_parser_save_simple_key(parser))
-        return 0;
-
-    /* A simple key cannot follow a flow scalar. */
-
-    parser->simple_key_allowed = 0;
-
-    /* Create the SCALAR token and append it to the queue. */
-
-    if (!yaml_parser_scan_flow_scalar(parser, &token, single))
-        return 0;
-
-    if (!ENQUEUE(parser, parser->tokens, token)) {
-        yaml_token_delete(&token);
-        return 0;
-    }
-
-    return 1;
-}
-
-/*
- * Produce the SCALAR(...,plain) token.
- */
-
-static int
-yaml_parser_fetch_plain_scalar(yaml_parser_t *parser)
-{
-    yaml_token_t token;
-
-    /* A plain scalar could be a simple key. */
-
-    if (!yaml_parser_save_simple_key(parser))
-        return 0;
-
-    /* A simple key cannot follow a flow scalar. */
-
-    parser->simple_key_allowed = 0;
-
-    /* Create the SCALAR token and append it to the queue. */
-
-    if (!yaml_parser_scan_plain_scalar(parser, &token))
-        return 0;
-
-    if (!ENQUEUE(parser, parser->tokens, token)) {
-        yaml_token_delete(&token);
-        return 0;
-    }
-
-    return 1;
-}
-
-/*
- * Eat whitespaces and comments until the next token is found.
- */
-
-static int
-yaml_parser_scan_to_next_token(yaml_parser_t *parser)
-{
-    /* Until the next token is not found. */
-
-    while (1)
-    {
-        /* Allow the BOM mark to start a line. */
-
-        if (!CACHE(parser, 1)) return 0;
-
-        if (parser->mark.column == 0 && IS_BOM(parser->buffer))
-            SKIP(parser);
-
-        /*
-         * Eat whitespaces.
-         *
-         * Tabs are allowed:
-         *
-         *  - in the flow context;
-         *  - in the block context, but not at the beginning of the line or
-         *  after '-', '?', or ':' (complex value).  
-         */
-
-        if (!CACHE(parser, 1)) return 0;
-
-        while (CHECK(parser->buffer,' ') ||
-                ((parser->flow_level || !parser->simple_key_allowed) &&
-                 CHECK(parser->buffer, '\t'))) {
-            SKIP(parser);
-            if (!CACHE(parser, 1)) return 0;
-        }
-
-        /* Eat a comment until a line break. */
-
-        if (CHECK(parser->buffer, '#')) {
-            while (!IS_BREAKZ(parser->buffer)) {
-                SKIP(parser);
-                if (!CACHE(parser, 1)) return 0;
-            }
-        }
-
-        /* If it is a line break, eat it. */
-
-        if (IS_BREAK(parser->buffer))
-        {
-            if (!CACHE(parser, 2)) return 0;
-            SKIP_LINE(parser);
-
-            /* In the block context, a new line may start a simple key. */
-
-            if (!parser->flow_level) {
-                parser->simple_key_allowed = 1;
-            }
-        }
-        else
-        {
-            /* We have found a token. */
-
-            break;
-        }
-    }
-
-    return 1;
-}
-
-/*
- * Scan a YAML-DIRECTIVE or TAG-DIRECTIVE token.
- *
- * Scope:
- *      %YAML    1.1    # a comment \n
- *      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- *      %TAG    !yaml!  tag:yaml.org,2002:  \n
- *      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- */
-
-int
-yaml_parser_scan_directive(yaml_parser_t *parser, yaml_token_t *token)
-{
-    yaml_mark_t start_mark, end_mark;
-    yaml_char_t *name = NULL;
-    int major, minor;
-    yaml_char_t *handle = NULL, *prefix = NULL;
-
-    /* Eat '%'. */
-
-    start_mark = parser->mark;
-
-    SKIP(parser);
-
-    /* Scan the directive name. */
-
-    if (!yaml_parser_scan_directive_name(parser, start_mark, &name))
-        goto error;
-
-    /* Is it a YAML directive? */
-
-    if (strcmp((char *)name, "YAML") == 0)
-    {
-        /* Scan the VERSION directive value. */
-
-        if (!yaml_parser_scan_version_directive_value(parser, start_mark,
-                    &major, &minor))
-            goto error;
-
-        end_mark = parser->mark;
-
-        /* Create a VERSION-DIRECTIVE token. */
-
-        VERSION_DIRECTIVE_TOKEN_INIT(*token, major, minor,
-                start_mark, end_mark);
-    }
-
-    /* Is it a TAG directive? */
-
-    else if (strcmp((char *)name, "TAG") == 0)
-    {
-        /* Scan the TAG directive value. */
-
-        if (!yaml_parser_scan_tag_directive_value(parser, start_mark,
-                    &handle, &prefix))
-            goto error;
-
-        end_mark = parser->mark;
-
-        /* Create a TAG-DIRECTIVE token. */
-
-        TAG_DIRECTIVE_TOKEN_INIT(*token, handle, prefix,
-                start_mark, end_mark);
-    }
-
-    /* Unknown directive. */
-
-    else
-    {
-        yaml_parser_set_scanner_error(parser, "while scanning a directive",
-                start_mark, "found uknown directive name");
-        goto error;
-    }
-
-    /* Eat the rest of the line including any comments. */
-
-    if (!CACHE(parser, 1)) goto error;
-
-    while (IS_BLANK(parser->buffer)) {
-        SKIP(parser);
-        if (!CACHE(parser, 1)) goto error;
-    }
-
-    if (CHECK(parser->buffer, '#')) {
-        while (!IS_BREAKZ(parser->buffer)) {
-            SKIP(parser);
-            if (!CACHE(parser, 1)) goto error;
-        }
-    }
-
-    /* Check if we are at the end of the line. */
-
-    if (!IS_BREAKZ(parser->buffer)) {
-        yaml_parser_set_scanner_error(parser, "while scanning a directive",
-                start_mark, "did not find expected comment or line break");
-        goto error;
-    }
-
-    /* Eat a line break. */
-
-    if (IS_BREAK(parser->buffer)) {
-        if (!CACHE(parser, 2)) goto error;
-        SKIP_LINE(parser);
-    }
-
-    yaml_free(name);
-
-    return 1;
-
-error:
-    yaml_free(prefix);
-    yaml_free(handle);
-    yaml_free(name);
-    return 0;
-}
-
-/*
- * Scan the directive name.
- *
- * Scope:
- *      %YAML   1.1     # a comment \n
- *       ^^^^
- *      %TAG    !yaml!  tag:yaml.org,2002:  \n
- *       ^^^
- */
-
-static int
-yaml_parser_scan_directive_name(yaml_parser_t *parser,
-        yaml_mark_t start_mark, yaml_char_t **name)
-{
-    yaml_string_t string = NULL_STRING;
-
-    if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error;
-
-    /* Consume the directive name. */
-
-    if (!CACHE(parser, 1)) goto error;
-
-    while (IS_ALPHA(parser->buffer))
-    {
-        if (!READ(parser, string)) goto error;
-        if (!CACHE(parser, 1)) goto error;
-    }
-
-    /* Check if the name is empty. */
-
-    if (string.start == string.pointer) {
-        yaml_parser_set_scanner_error(parser, "while scanning a directive",
-                start_mark, "could not find expected directive name");
-        goto error;
-    }
-
-    /* Check for an blank character after the name. */
-
-    if (!IS_BLANKZ(parser->buffer)) {
-        yaml_parser_set_scanner_error(parser, "while scanning a directive",
-                start_mark, "found unexpected non-alphabetical character");
-        goto error;
-    }
-
-    *name = string.start;
-
-    return 1;
-
-error:
-    STRING_DEL(parser, string);
-    return 0;
-}
-
-/*
- * Scan the value of VERSION-DIRECTIVE.
- *
- * Scope:
- *      %YAML   1.1     # a comment \n
- *           ^^^^^^
- */
-
-static int
-yaml_parser_scan_version_directive_value(yaml_parser_t *parser,
-        yaml_mark_t start_mark, int *major, int *minor)
-{
-    /* Eat whitespaces. */
-
-    if (!CACHE(parser, 1)) return 0;
-
-    while (IS_BLANK(parser->buffer)) {
-        SKIP(parser);
-        if (!CACHE(parser, 1)) return 0;
-    }
-
-    /* Consume the major version number. */
-
-    if (!yaml_parser_scan_version_directive_number(parser, start_mark, major))
-        return 0;
-
-    /* Eat '.'. */
-
-    if (!CHECK(parser->buffer, '.')) {
-        return yaml_parser_set_scanner_error(parser, "while scanning a %YAML directive",
-                start_mark, "did not find expected digit or '.' character");
-    }
-
-    SKIP(parser);
-
-    /* Consume the minor version number. */
-
-    if (!yaml_parser_scan_version_directive_number(parser, start_mark, minor))
-        return 0;
-
-    return 1;
-}
-
-#define MAX_NUMBER_LENGTH   9
-
-/*
- * Scan the version number of VERSION-DIRECTIVE.
- *
- * Scope:
- *      %YAML   1.1     # a comment \n
- *              ^
- *      %YAML   1.1     # a comment \n
- *                ^
- */
-
-static int
-yaml_parser_scan_version_directive_number(yaml_parser_t *parser,
-        yaml_mark_t start_mark, int *number)
-{
-    int value = 0;
-    size_t length = 0;
-
-    /* Repeat while the next character is digit. */
-
-    if (!CACHE(parser, 1)) return 0;
-
-    while (IS_DIGIT(parser->buffer))
-    {
-        /* Check if the number is too long. */
-
-        if (++length > MAX_NUMBER_LENGTH) {
-            return yaml_parser_set_scanner_error(parser, "while scanning a %YAML directive",
-                    start_mark, "found extremely long version number");
-        }
-
-        value = value*10 + AS_DIGIT(parser->buffer);
-
-        SKIP(parser);
-
-        if (!CACHE(parser, 1)) return 0;
-    }
-
-    /* Check if the number was present. */
-
-    if (!length) {
-        return yaml_parser_set_scanner_error(parser, "while scanning a %YAML directive",
-                start_mark, "did not find expected version number");
-    }
-
-    *number = value;
-
-    return 1;
-}
-
-/*
- * Scan the value of a TAG-DIRECTIVE token.
- *
- * Scope:
- *      %TAG    !yaml!  tag:yaml.org,2002:  \n
- *          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- */
-
-static int
-yaml_parser_scan_tag_directive_value(yaml_parser_t *parser,
-        yaml_mark_t start_mark, yaml_char_t **handle, yaml_char_t **prefix)
-{
-    yaml_char_t *handle_value = NULL;
-    yaml_char_t *prefix_value = NULL;
-
-    /* Eat whitespaces. */
-
-    if (!CACHE(parser, 1)) goto error;
-
-    while (IS_BLANK(parser->buffer)) {
-        SKIP(parser);
-        if (!CACHE(parser, 1)) goto error;
-    }
-
-    /* Scan a handle. */
-
-    if (!yaml_parser_scan_tag_handle(parser, 1, start_mark, &handle_value))
-        goto error;
-
-    /* Expect a whitespace. */
-
-    if (!CACHE(parser, 1)) goto error;
-
-    if (!IS_BLANK(parser->buffer)) {
-        yaml_parser_set_scanner_error(parser, "while scanning a %TAG directive",
-                start_mark, "did not find expected whitespace");
-        goto error;
-    }
-
-    /* Eat whitespaces. */
-
-    while (IS_BLANK(parser->buffer)) {
-        SKIP(parser);
-        if (!CACHE(parser, 1)) goto error;
-    }
-
-    /* Scan a prefix. */
-
-    if (!yaml_parser_scan_tag_uri(parser, 1, NULL, start_mark, &prefix_value))
-        goto error;
-
-    /* Expect a whitespace or line break. */
-
-    if (!CACHE(parser, 1)) goto error;
-
-    if (!IS_BLANKZ(parser->buffer)) {
-        yaml_parser_set_scanner_error(parser, "while scanning a %TAG directive",
-                start_mark, "did not find expected whitespace or line break");
-        goto error;
-    }
-
-    *handle = handle_value;
-    *prefix = prefix_value;
-
-    return 1;
-
-error:
-    yaml_free(handle_value);
-    yaml_free(prefix_value);
-    return 0;
-}
-
-static int
-yaml_parser_scan_anchor(yaml_parser_t *parser, yaml_token_t *token,
-        yaml_token_type_t type)
-{
-    int length = 0;
-    yaml_mark_t start_mark, end_mark;
-    yaml_string_t string = NULL_STRING;
-
-    if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error;
-
-    /* Eat the indicator character. */
-
-    start_mark = parser->mark;
-
-    SKIP(parser);
-
-    /* Consume the value. */
-
-    if (!CACHE(parser, 1)) goto error;
-
-    while (IS_ALPHA(parser->buffer)) {
-        if (!READ(parser, string)) goto error;
-        if (!CACHE(parser, 1)) goto error;
-        length ++;
-    }
-
-    end_mark = parser->mark;
-
-    /*
-     * Check if length of the anchor is greater than 0 and it is followed by
-     * a whitespace character or one of the indicators:
-     *
-     *      '?', ':', ',', ']', '}', '%', '@', '`'.
-     */
-
-    if (!length || !(IS_BLANKZ(parser->buffer) || CHECK(parser->buffer, '?')
-                || CHECK(parser->buffer, ':') || CHECK(parser->buffer, ',')
-                || CHECK(parser->buffer, ']') || CHECK(parser->buffer, '}')
-                || CHECK(parser->buffer, '%') || CHECK(parser->buffer, '@')
-                || CHECK(parser->buffer, '`'))) {
-        yaml_parser_set_scanner_error(parser, type == YAML_ANCHOR_TOKEN ?
-                "while scanning an anchor" : "while scanning an alias", start_mark,
-                "did not find expected alphabetic or numeric character");
-        goto error;
-    }
-
-    /* Create a token. */
-
-    if (type == YAML_ANCHOR_TOKEN) {
-        ANCHOR_TOKEN_INIT(*token, string.start, start_mark, end_mark);
-    }
-    else {
-        ALIAS_TOKEN_INIT(*token, string.start, start_mark, end_mark);
-    }
-
-    return 1;
-
-error:
-    STRING_DEL(parser, string);
-    return 0;
-}
-
-/*
- * Scan a TAG token.
- */
-
-static int
-yaml_parser_scan_tag(yaml_parser_t *parser, yaml_token_t *token)
-{
-    yaml_char_t *handle = NULL;
-    yaml_char_t *suffix = NULL;
-    yaml_mark_t start_mark, end_mark;
-
-    start_mark = parser->mark;
-
-    /* Check if the tag is in the canonical form. */
-
-    if (!CACHE(parser, 2)) goto error;
-
-    if (CHECK_AT(parser->buffer, '<', 1))
-    {
-        /* Set the handle to '' */
-
-        handle = yaml_malloc(1);
-        if (!handle) goto error;
-        handle[0] = '\0';
-
-        /* Eat '!<' */
-
-        SKIP(parser);
-        SKIP(parser);
-
-        /* Consume the tag value. */
-
-        if (!yaml_parser_scan_tag_uri(parser, 0, NULL, start_mark, &suffix))
-            goto error;
-
-        /* Check for '>' and eat it. */
-
-        if (!CHECK(parser->buffer, '>')) {
-            yaml_parser_set_scanner_error(parser, "while scanning a tag",
-                    start_mark, "did not find the expected '>'");
-            goto error;
-        }
-
-        SKIP(parser);
-    }
-    else
-    {
-        /* The tag has either the '!suffix' or the '!handle!suffix' form. */
-
-        /* First, try to scan a handle. */
-
-        if (!yaml_parser_scan_tag_handle(parser, 0, start_mark, &handle))
-            goto error;
-
-        /* Check if it is, indeed, handle. */
-
-        if (handle[0] == '!' && handle[1] != '\0' && handle[strlen((char *)handle)-1] == '!')
-        {
-            /* Scan the suffix now. */
-
-            if (!yaml_parser_scan_tag_uri(parser, 0, NULL, start_mark, &suffix))
-                goto error;
-        }
-        else
-        {
-            /* It wasn't a handle after all.  Scan the rest of the tag. */
-
-            if (!yaml_parser_scan_tag_uri(parser, 0, handle, start_mark, &suffix))
-                goto error;
-
-            /* Set the handle to '!'. */
-
-            yaml_free(handle);
-            handle = yaml_malloc(2);
-            if (!handle) goto error;
-            handle[0] = '!';
-            handle[1] = '\0';
-
-            /*
-             * A special case: the '!' tag.  Set the handle to '' and the
-             * suffix to '!'.
-             */
-
-            if (suffix[0] == '\0') {
-                yaml_char_t *tmp = handle;
-                handle = suffix;
-                suffix = tmp;
-            }
-        }
-    }
-
-    /* Check the character which ends the tag. */
-
-    if (!CACHE(parser, 1)) goto error;
-
-    if (!IS_BLANKZ(parser->buffer)) {
-        yaml_parser_set_scanner_error(parser, "while scanning a tag",
-                start_mark, "did not find expected whitespace or line break");
-        goto error;
-    }
-
-    end_mark = parser->mark;
-
-    /* Create a token. */
-
-    TAG_TOKEN_INIT(*token, handle, suffix, start_mark, end_mark);
-
-    return 1;
-
-error:
-    yaml_free(handle);
-    yaml_free(suffix);
-    return 0;
-}
-
-/*
- * Scan a tag handle.
- */
-
-static int
-yaml_parser_scan_tag_handle(yaml_parser_t *parser, int directive,
-        yaml_mark_t start_mark, yaml_char_t **handle)
-{
-    yaml_string_t string = NULL_STRING;
-
-    if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error;
-
-    /* Check the initial '!' character. */
-
-    if (!CACHE(parser, 1)) goto error;
-
-    if (!CHECK(parser->buffer, '!')) {
-        yaml_parser_set_scanner_error(parser, directive ?
-                "while scanning a tag directive" : "while scanning a tag",
-                start_mark, "did not find expected '!'");
-        goto error;
-    }
-
-    /* Copy the '!' character. */
-
-    if (!READ(parser, string)) goto error;
-
-    /* Copy all subsequent alphabetical and numerical characters. */
-
-    if (!CACHE(parser, 1)) goto error;
-
-    while (IS_ALPHA(parser->buffer))
-    {
-        if (!READ(parser, string)) goto error;
-        if (!CACHE(parser, 1)) goto error;
-    }
-
-    /* Check if the trailing character is '!' and copy it. */
-
-    if (CHECK(parser->buffer, '!'))
-    {
-        if (!READ(parser, string)) goto error;
-    }
-    else
-    {
-        /*
-         * It's either the '!' tag or not really a tag handle.  If it's a %TAG
-         * directive, it's an error.  If it's a tag token, it must be a part of
-         * URI.
-         */
-
-        if (directive && !(string.start[0] == '!' && string.start[1] == '\0')) {
-            yaml_parser_set_scanner_error(parser, "while parsing a tag directive",
-                    start_mark, "did not find expected '!'");
-            goto error;
-        }
-    }
-
-    *handle = string.start;
-
-    return 1;
-
-error:
-    STRING_DEL(parser, string);
-    return 0;
-}
-
-/*
- * Scan a tag.
- */
-
-static int
-yaml_parser_scan_tag_uri(yaml_parser_t *parser, int directive,
-        yaml_char_t *head, yaml_mark_t start_mark, yaml_char_t **uri)
-{
-    size_t length = head ? strlen((char *)head) : 0;
-    yaml_string_t string = NULL_STRING;
-
-    if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error;
-
-    /* Resize the string to include the head. */
-
-    while (string.end - string.start <= (int)length) {
-        if (!yaml_string_extend(&string.start, &string.pointer, &string.end)) {
-            parser->error = YAML_MEMORY_ERROR;
-            goto error;
-        }
-    }
-
-    /*
-     * Copy the head if needed.
-     *
-     * Note that we don't copy the leading '!' character.
-     */
-
-    if (length > 1) {
-        memcpy(string.start, head+1, length-1);
-        string.pointer += length-1;
-    }
-
-    /* Scan the tag. */
-
-    if (!CACHE(parser, 1)) goto error;
-
-    /*
-     * The set of characters that may appear in URI is as follows:
-     *
-     *      '0'-'9', 'A'-'Z', 'a'-'z', '_', '-', ';', '/', '?', ':', '@', '&',
-     *      '=', '+', '$', ',', '.', '!', '~', '*', '\'', '(', ')', '[', ']',
-     *      '%'.
-     */
-
-    while (IS_ALPHA(parser->buffer) || CHECK(parser->buffer, ';')
-            || CHECK(parser->buffer, '/') || CHECK(parser->buffer, '?')
-            || CHECK(parser->buffer, ':') || CHECK(parser->buffer, '@')
-            || CHECK(parser->buffer, '&') || CHECK(parser->buffer, '=')
-            || CHECK(parser->buffer, '+') || CHECK(parser->buffer, '$')
-            || CHECK(parser->buffer, ',') || CHECK(parser->buffer, '.')
-            || CHECK(parser->buffer, '!') || CHECK(parser->buffer, '~')
-            || CHECK(parser->buffer, '*') || CHECK(parser->buffer, '\'')
-            || CHECK(parser->buffer, '(') || CHECK(parser->buffer, ')')
-            || CHECK(parser->buffer, '[') || CHECK(parser->buffer, ']')
-            || CHECK(parser->buffer, '%'))
-    {
-        /* Check if it is a URI-escape sequence. */
-
-        if (CHECK(parser->buffer, '%')) {
-            if (!yaml_parser_scan_uri_escapes(parser,
-                        directive, start_mark, &string)) goto error;
-        }
-        else {
-            if (!READ(parser, string)) goto error;
-        }
-
-        length ++;
-        if (!CACHE(parser, 1)) goto error;
-    }
-
-    /* Check if the tag is non-empty. */
-
-    if (!length) {
-        if (!STRING_EXTEND(parser, string))
-            goto error;
-
-        yaml_parser_set_scanner_error(parser, directive ?
-                "while parsing a %TAG directive" : "while parsing a tag",
-                start_mark, "did not find expected tag URI");
-        goto error;
-    }
-
-    *uri = string.start;
-
-    return 1;
-
-error:
-    STRING_DEL(parser, string);
-    return 0;
-}
-
-/*
- * Decode an URI-escape sequence corresponding to a single UTF-8 character.
- */
-
-static int
-yaml_parser_scan_uri_escapes(yaml_parser_t *parser, int directive,
-        yaml_mark_t start_mark, yaml_string_t *string)
-{
-    int width = 0;
-
-    /* Decode the required number of characters. */
-
-    do {
-
-        unsigned char octet = 0;
-
-        /* Check for a URI-escaped octet. */
-
-        if (!CACHE(parser, 3)) return 0;
-
-        if (!(CHECK(parser->buffer, '%')
-                    && IS_HEX_AT(parser->buffer, 1)
-                    && IS_HEX_AT(parser->buffer, 2))) {
-            return yaml_parser_set_scanner_error(parser, directive ?
-                    "while parsing a %TAG directive" : "while parsing a tag",
-                    start_mark, "did not find URI escaped octet");
-        }
-
-        /* Get the octet. */
-
-        octet = (AS_HEX_AT(parser->buffer, 1) << 4) + AS_HEX_AT(parser->buffer, 2);
-
-        /* If it is the leading octet, determine the length of the UTF-8 sequence. */
-
-        if (!width)
-        {
-            width = (octet & 0x80) == 0x00 ? 1 :
-                    (octet & 0xE0) == 0xC0 ? 2 :
-                    (octet & 0xF0) == 0xE0 ? 3 :
-                    (octet & 0xF8) == 0xF0 ? 4 : 0;
-            if (!width) {
-                return yaml_parser_set_scanner_error(parser, directive ?
-                        "while parsing a %TAG directive" : "while parsing a tag",
-                        start_mark, "found an incorrect leading UTF-8 octet");
-            }
-        }
-        else
-        {
-            /* Check if the trailing octet is correct. */
-
-            if ((octet & 0xC0) != 0x80) {
-                return yaml_parser_set_scanner_error(parser, directive ?
-                        "while parsing a %TAG directive" : "while parsing a tag",
-                        start_mark, "found an incorrect trailing UTF-8 octet");
-            }
-        }
-
-        /* Copy the octet and move the pointers. */
-
-        *(string->pointer++) = octet;
-        SKIP(parser);
-        SKIP(parser);
-        SKIP(parser);
-
-    } while (--width);
-
-    return 1;
-}
-
-/*
- * Scan a block scalar.
- */
-
-static int
-yaml_parser_scan_block_scalar(yaml_parser_t *parser, yaml_token_t *token,
-        int literal)
-{
-    yaml_mark_t start_mark;
-    yaml_mark_t end_mark;
-    yaml_string_t string = NULL_STRING;
-    yaml_string_t leading_break = NULL_STRING;
-    yaml_string_t trailing_breaks = NULL_STRING;
-    int chomping = 0;
-    int increment = 0;
-    int indent = 0;
-    int leading_blank = 0;
-    int trailing_blank = 0;
-
-    if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error;
-    if (!STRING_INIT(parser, leading_break, INITIAL_STRING_SIZE)) goto error;
-    if (!STRING_INIT(parser, trailing_breaks, INITIAL_STRING_SIZE)) goto error;
-
-    /* Eat the indicator '|' or '>'. */
-
-    start_mark = parser->mark;
-
-    SKIP(parser);
-
-    /* Scan the additional block scalar indicators. */
-
-    if (!CACHE(parser, 1)) goto error;
-
-    /* Check for a chomping indicator. */
-
-    if (CHECK(parser->buffer, '+') || CHECK(parser->buffer, '-'))
-    {
-        /* Set the chomping method and eat the indicator. */
-
-        chomping = CHECK(parser->buffer, '+') ? +1 : -1;
-
-        SKIP(parser);
-
-        /* Check for an indentation indicator. */
-
-        if (!CACHE(parser, 1)) goto error;
-
-        if (IS_DIGIT(parser->buffer))
-        {
-            /* Check that the intendation is greater than 0. */
-
-            if (CHECK(parser->buffer, '0')) {
-                yaml_parser_set_scanner_error(parser, "while scanning a block scalar",
-                        start_mark, "found an intendation indicator equal to 0");
-                goto error;
-            }
-
-            /* Get the intendation level and eat the indicator. */
-
-            increment = AS_DIGIT(parser->buffer);
-
-            SKIP(parser);
-        }
-    }
-
-    /* Do the same as above, but in the opposite order. */
-
-    else if (IS_DIGIT(parser->buffer))
-    {
-        if (CHECK(parser->buffer, '0')) {
-            yaml_parser_set_scanner_error(parser, "while scanning a block scalar",
-                    start_mark, "found an intendation indicator equal to 0");
-            goto error;
-        }
-
-        increment = AS_DIGIT(parser->buffer);
-
-        SKIP(parser);
-
-        if (!CACHE(parser, 1)) goto error;
-
-        if (CHECK(parser->buffer, '+') || CHECK(parser->buffer, '-')) {
-            chomping = CHECK(parser->buffer, '+') ? +1 : -1;
-
-            SKIP(parser);
-        }
-    }
-
-    /* Eat whitespaces and comments to the end of the line. */
-
-    if (!CACHE(parser, 1)) goto error;
-
-    while (IS_BLANK(parser->buffer)) {
-        SKIP(parser);
-        if (!CACHE(parser, 1)) goto error;
-    }
-
-    if (CHECK(parser->buffer, '#')) {
-        while (!IS_BREAKZ(parser->buffer)) {
-            SKIP(parser);
-            if (!CACHE(parser, 1)) goto error;
-        }
-    }
-
-    /* Check if we are at the end of the line. */
-
-    if (!IS_BREAKZ(parser->buffer)) {
-        yaml_parser_set_scanner_error(parser, "while scanning a block scalar",
-                start_mark, "did not find expected comment or line break");
-        goto error;
-    }
-
-    /* Eat a line break. */
-
-    if (IS_BREAK(parser->buffer)) {
-        if (!CACHE(parser, 2)) goto error;
-        SKIP_LINE(parser);
-    }
-
-    end_mark = parser->mark;
-
-    /* Set the intendation level if it was specified. */
-
-    if (increment) {
-        indent = parser->indent >= 0 ? parser->indent+increment : increment;
-    }
-
-    /* Scan the leading line breaks and determine the indentation level if needed. */
-
-    if (!yaml_parser_scan_block_scalar_breaks(parser, &indent, &trailing_breaks,
-                start_mark, &end_mark)) goto error;
-
-    /* Scan the block scalar content. */
-
-    if (!CACHE(parser, 1)) goto error;
-
-    while ((int)parser->mark.column == indent && !IS_Z(parser->buffer))
-    {
-        /*
-         * We are at the beginning of a non-empty line.
-         */
-
-        /* Is it a trailing whitespace? */
-
-        trailing_blank = IS_BLANK(parser->buffer);
-
-        /* Check if we need to fold the leading line break. */
-
-        if (!literal && (*leading_break.start == '\n')
-                && !leading_blank && !trailing_blank)
-        {
-            /* Do we need to join the lines by space? */
-
-            if (*trailing_breaks.start == '\0') {
-                if (!STRING_EXTEND(parser, string)) goto error;
-                *(string.pointer ++) = ' ';
-            }
-
-            CLEAR(parser, leading_break);
-        }
-        else {
-            if (!JOIN(parser, string, leading_break)) goto error;
-            CLEAR(parser, leading_break);
-        }
-
-        /* Append the remaining line breaks. */
-
-        if (!JOIN(parser, string, trailing_breaks)) goto error;
-        CLEAR(parser, trailing_breaks);
-
-        /* Is it a leading whitespace? */
-
-        leading_blank = IS_BLANK(parser->buffer);
-
-        /* Consume the current line. */
-
-        while (!IS_BREAKZ(parser->buffer)) {
-            if (!READ(parser, string)) goto error;
-            if (!CACHE(parser, 1)) goto error;
-        }
-
-        /* Consume the line break. */
-
-        if (!CACHE(parser, 2)) goto error;
-
-        if (!READ_LINE(parser, leading_break)) goto error;
-
-        /* Eat the following intendation spaces and line breaks. */
-
-        if (!yaml_parser_scan_block_scalar_breaks(parser,
-                    &indent, &trailing_breaks, start_mark, &end_mark)) goto error;
-    }
-
-    /* Chomp the tail. */
-
-    if (chomping != -1) {
-        if (!JOIN(parser, string, leading_break)) goto error;
-    }
-    if (chomping == 1) {
-        if (!JOIN(parser, string, trailing_breaks)) goto error;
-    }
-
-    /* Create a token. */
-
-    SCALAR_TOKEN_INIT(*token, string.start, string.pointer-string.start,
-            literal ? YAML_LITERAL_SCALAR_STYLE : YAML_FOLDED_SCALAR_STYLE,
-            start_mark, end_mark);
-
-    STRING_DEL(parser, leading_break);
-    STRING_DEL(parser, trailing_breaks);
-
-    return 1;
-
-error:
-    STRING_DEL(parser, string);
-    STRING_DEL(parser, leading_break);
-    STRING_DEL(parser, trailing_breaks);
-
-    return 0;
-}
-
-/*
- * Scan intendation spaces and line breaks for a block scalar.  Determine the
- * intendation level if needed.
- */
-
-static int
-yaml_parser_scan_block_scalar_breaks(yaml_parser_t *parser,
-        int *indent, yaml_string_t *breaks,
-        yaml_mark_t start_mark, yaml_mark_t *end_mark)
-{
-    int max_indent = 0;
-
-    *end_mark = parser->mark;
-
-    /* Eat the intendation spaces and line breaks. */
-
-    while (1)
-    {
-        /* Eat the intendation spaces. */
-
-        if (!CACHE(parser, 1)) return 0;
-
-        while ((!*indent || (int)parser->mark.column < *indent)
-                && IS_SPACE(parser->buffer)) {
-            SKIP(parser);
-            if (!CACHE(parser, 1)) return 0;
-        }
-
-        if ((int)parser->mark.column > max_indent)
-            max_indent = (int)parser->mark.column;
-
-        /* Check for a tab character messing the intendation. */
-
-        if ((!*indent || (int)parser->mark.column < *indent)
-                && IS_TAB(parser->buffer)) {
-            return yaml_parser_set_scanner_error(parser, "while scanning a block scalar",
-                    start_mark, "found a tab character where an intendation space is expected");
-        }
-
-        /* Have we found a non-empty line? */
-
-        if (!IS_BREAK(parser->buffer)) break;
-
-        /* Consume the line break. */
-
-        if (!CACHE(parser, 2)) return 0;
-        if (!READ_LINE(parser, *breaks)) return 0;
-        *end_mark = parser->mark;
-    }
-
-    /* Determine the indentation level if needed. */
-
-    if (!*indent) {
-        *indent = max_indent;
-        if (*indent < parser->indent + 1)
-            *indent = parser->indent + 1;
-        if (*indent < 1)
-            *indent = 1;
-    }
-
-   return 1; 
-}
-
-/*
- * Scan a quoted scalar.
- */
-
-static int
-yaml_parser_scan_flow_scalar(yaml_parser_t *parser, yaml_token_t *token,
-        int single)
-{
-    yaml_mark_t start_mark;
-    yaml_mark_t end_mark;
-    yaml_string_t string = NULL_STRING;
-    yaml_string_t leading_break = NULL_STRING;
-    yaml_string_t trailing_breaks = NULL_STRING;
-    yaml_string_t whitespaces = NULL_STRING;
-    int leading_blanks;
-
-    if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error;
-    if (!STRING_INIT(parser, leading_break, INITIAL_STRING_SIZE)) goto error;
-    if (!STRING_INIT(parser, trailing_breaks, INITIAL_STRING_SIZE)) goto error;
-    if (!STRING_INIT(parser, whitespaces, INITIAL_STRING_SIZE)) goto error;
-
-    /* Eat the left quote. */
-
-    start_mark = parser->mark;
-
-    SKIP(parser);
-
-    /* Consume the content of the quoted scalar. */
-
-    while (1)
-    {
-        /* Check that there are no document indicators at the beginning of the line. */
-
-        if (!CACHE(parser, 4)) goto error;
-
-        if (parser->mark.column == 0 &&
-            ((CHECK_AT(parser->buffer, '-', 0) &&
-              CHECK_AT(parser->buffer, '-', 1) &&
-              CHECK_AT(parser->buffer, '-', 2)) ||
-             (CHECK_AT(parser->buffer, '.', 0) &&
-              CHECK_AT(parser->buffer, '.', 1) &&
-              CHECK_AT(parser->buffer, '.', 2))) &&
-            IS_BLANKZ_AT(parser->buffer, 3))
-        {
-            yaml_parser_set_scanner_error(parser, "while scanning a quoted scalar",
-                    start_mark, "found unexpected document indicator");
-            goto error;
-        }
-
-        /* Check for EOF. */
-
-        if (IS_Z(parser->buffer)) {
-            yaml_parser_set_scanner_error(parser, "while scanning a quoted scalar",
-                    start_mark, "found unexpected end of stream");
-            goto error;
-        }
-
-        /* Consume non-blank characters. */
-
-        if (!CACHE(parser, 2)) goto error;
-
-        leading_blanks = 0;
-
-        while (!IS_BLANKZ(parser->buffer))
-        {
-            /* Check for an escaped single quote. */
-
-            if (single && CHECK_AT(parser->buffer, '\'', 0)
-                    && CHECK_AT(parser->buffer, '\'', 1))
-            {
-                if (!STRING_EXTEND(parser, string)) goto error;
-                *(string.pointer++) = '\'';
-                SKIP(parser);
-                SKIP(parser);
-            }
-
-            /* Check for the right quote. */
-
-            else if (CHECK(parser->buffer, single ? '\'' : '"'))
-            {
-                break;
-            }
-
-            /* Check for an escaped line break. */
-
-            else if (!single && CHECK(parser->buffer, '\\')
-                    && IS_BREAK_AT(parser->buffer, 1))
-            {
-                if (!CACHE(parser, 3)) goto error;
-                SKIP(parser);
-                SKIP_LINE(parser);
-                leading_blanks = 1;
-                break;
-            }
-
-            /* Check for an escape sequence. */
-
-            else if (!single && CHECK(parser->buffer, '\\'))
-            {
-                size_t code_length = 0;
-
-                if (!STRING_EXTEND(parser, string)) goto error;
-
-                /* Check the escape character. */
-
-                switch (parser->buffer.pointer[1])
-                {
-                    case '0':
-                        *(string.pointer++) = '\0';
-                        break;
-
-                    case 'a':
-                        *(string.pointer++) = '\x07';
-                        break;
-
-                    case 'b':
-                        *(string.pointer++) = '\x08';
-                        break;
-
-                    case 't':
-                    case '\t':
-                        *(string.pointer++) = '\x09';
-                        break;
-
-                    case 'n':
-                        *(string.pointer++) = '\x0A';
-                        break;
-
-                    case 'v':
-                        *(string.pointer++) = '\x0B';
-                        break;
-
-                    case 'f':
-                        *(string.pointer++) = '\x0C';
-                        break;
-
-                    case 'r':
-                        *(string.pointer++) = '\x0D';
-                        break;
-
-                    case 'e':
-                        *(string.pointer++) = '\x1B';
-                        break;
-
-                    case ' ':
-                        *(string.pointer++) = '\x20';
-                        break;
-
-                    case '"':
-                        *(string.pointer++) = '"';
-                        break;
-
-                    case '\'':
-                        *(string.pointer++) = '\'';
-                        break;
-
-                    case '\\':
-                        *(string.pointer++) = '\\';
-                        break;
-
-                    case 'N':   /* NEL (#x85) */
-                        *(string.pointer++) = '\xC2';
-                        *(string.pointer++) = '\x85';
-                        break;
-
-                    case '_':   /* #xA0 */
-                        *(string.pointer++) = '\xC2';
-                        *(string.pointer++) = '\xA0';
-                        break;
-
-                    case 'L':   /* LS (#x2028) */
-                        *(string.pointer++) = '\xE2';
-                        *(string.pointer++) = '\x80';
-                        *(string.pointer++) = '\xA8';
-                        break;
-
-                    case 'P':   /* PS (#x2029) */
-                        *(string.pointer++) = '\xE2';
-                        *(string.pointer++) = '\x80';
-                        *(string.pointer++) = '\xA9';
-                        break;
-
-                    case 'x':
-                        code_length = 2;
-                        break;
-
-                    case 'u':
-                        code_length = 4;
-                        break;
-
-                    case 'U':
-                        code_length = 8;
-                        break;
-
-                    default:
-                        yaml_parser_set_scanner_error(parser, "while parsing a quoted scalar",
-                                start_mark, "found unknown escape character");
-                        goto error;
-                }
-
-                SKIP(parser);
-                SKIP(parser);
-
-                /* Consume an arbitrary escape code. */
-
-                if (code_length)
-                {
-                    unsigned int value = 0;
-                    size_t k;
-
-                    /* Scan the character value. */
-
-                    if (!CACHE(parser, code_length)) goto error;
-
-                    for (k = 0; k < code_length; k ++) {
-                        if (!IS_HEX_AT(parser->buffer, k)) {
-                            yaml_parser_set_scanner_error(parser, "while parsing a quoted scalar",
-                                    start_mark, "did not find expected hexdecimal number");
-                            goto error;
-                        }
-                        value = (value << 4) + AS_HEX_AT(parser->buffer, k);
-                    }
-
-                    /* Check the value and write the character. */
-
-                    if ((value >= 0xD800 && value <= 0xDFFF) || value > 0x10FFFF) {
-                        yaml_parser_set_scanner_error(parser, "while parsing a quoted scalar",
-                                start_mark, "found invalid Unicode character escape code");
-                        goto error;
-                    }
-
-                    if (value <= 0x7F) {
-                        *(string.pointer++) = value;
-                    }
-                    else if (value <= 0x7FF) {
-                        *(string.pointer++) = 0xC0 + (value >> 6);
-                        *(string.pointer++) = 0x80 + (value & 0x3F);
-                    }
-                    else if (value <= 0xFFFF) {
-                        *(string.pointer++) = 0xE0 + (value >> 12);
-                        *(string.pointer++) = 0x80 + ((value >> 6) & 0x3F);
-                        *(string.pointer++) = 0x80 + (value & 0x3F);
-                    }
-                    else {
-                        *(string.pointer++) = 0xF0 + (value >> 18);
-                        *(string.pointer++) = 0x80 + ((value >> 12) & 0x3F);
-                        *(string.pointer++) = 0x80 + ((value >> 6) & 0x3F);
-                        *(string.pointer++) = 0x80 + (value & 0x3F);
-                    }
-
-                    /* Advance the pointer. */
-
-                    for (k = 0; k < code_length; k ++) {
-                        SKIP(parser);
-                    }
-                }
-            }
-
-            else
-            {
-                /* It is a non-escaped non-blank character. */
-
-                if (!READ(parser, string)) goto error;
-            }
-
-            if (!CACHE(parser, 2)) goto error;
-        }
-
-        /* Check if we are at the end of the scalar. */
-
-        if (CHECK(parser->buffer, single ? '\'' : '"'))
-            break;
-
-        /* Consume blank characters. */
-
-        if (!CACHE(parser, 1)) goto error;
-
-        while (IS_BLANK(parser->buffer) || IS_BREAK(parser->buffer))
-        {
-            if (IS_BLANK(parser->buffer))
-            {
-                /* Consume a space or a tab character. */
-
-                if (!leading_blanks) {
-                    if (!READ(parser, whitespaces)) goto error;
-                }
-                else {
-                    SKIP(parser);
-                }
-            }
-            else
-            {
-                if (!CACHE(parser, 2)) goto error;
-
-                /* Check if it is a first line break. */
-
-                if (!leading_blanks)
-                {
-                    CLEAR(parser, whitespaces);
-                    if (!READ_LINE(parser, leading_break)) goto error;
-                    leading_blanks = 1;
-                }
-                else
-                {
-                    if (!READ_LINE(parser, trailing_breaks)) goto error;
-                }
-            }
-            if (!CACHE(parser, 1)) goto error;
-        }
-
-        /* Join the whitespaces or fold line breaks. */
-
-        if (leading_blanks)
-        {
-            /* Do we need to fold line breaks? */
-
-            if (leading_break.start[0] == '\n') {
-                if (trailing_breaks.start[0] == '\0') {
-                    if (!STRING_EXTEND(parser, string)) goto error;
-                    *(string.pointer++) = ' ';
-                }
-                else {
-                    if (!JOIN(parser, string, trailing_breaks)) goto error;
-                    CLEAR(parser, trailing_breaks);
-                }
-                CLEAR(parser, leading_break);
-            }
-            else {
-                if (!JOIN(parser, string, leading_break)) goto error;
-                if (!JOIN(parser, string, trailing_breaks)) goto error;
-                CLEAR(parser, leading_break);
-                CLEAR(parser, trailing_breaks);
-            }
-        }
-        else
-        {
-            if (!JOIN(parser, string, whitespaces)) goto error;
-            CLEAR(parser, whitespaces);
-        }
-    }
-
-    /* Eat the right quote. */
-
-    SKIP(parser);
-
-    end_mark = parser->mark;
-
-    /* Create a token. */
-
-    SCALAR_TOKEN_INIT(*token, string.start, string.pointer-string.start,
-            single ? YAML_SINGLE_QUOTED_SCALAR_STYLE : YAML_DOUBLE_QUOTED_SCALAR_STYLE,
-            start_mark, end_mark);
-
-    STRING_DEL(parser, leading_break);
-    STRING_DEL(parser, trailing_breaks);
-    STRING_DEL(parser, whitespaces);
-
-    return 1;
-
-error:
-    STRING_DEL(parser, string);
-    STRING_DEL(parser, leading_break);
-    STRING_DEL(parser, trailing_breaks);
-    STRING_DEL(parser, whitespaces);
-
-    return 0;
-}
-
-/*
- * Scan a plain scalar.
- */
-
-static int
-yaml_parser_scan_plain_scalar(yaml_parser_t *parser, yaml_token_t *token)
-{
-    yaml_mark_t start_mark;
-    yaml_mark_t end_mark;
-    yaml_string_t string = NULL_STRING;
-    yaml_string_t leading_break = NULL_STRING;
-    yaml_string_t trailing_breaks = NULL_STRING;
-    yaml_string_t whitespaces = NULL_STRING;
-    int leading_blanks = 0;
-    int indent = parser->indent+1;
-
-    if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error;
-    if (!STRING_INIT(parser, leading_break, INITIAL_STRING_SIZE)) goto error;
-    if (!STRING_INIT(parser, trailing_breaks, INITIAL_STRING_SIZE)) goto error;
-    if (!STRING_INIT(parser, whitespaces, INITIAL_STRING_SIZE)) goto error;
-
-    start_mark = end_mark = parser->mark;
-
-    /* Consume the content of the plain scalar. */
-
-    while (1)
-    {
-        /* Check for a document indicator. */
-
-        if (!CACHE(parser, 4)) goto error;
-
-        if (parser->mark.column == 0 &&
-            ((CHECK_AT(parser->buffer, '-', 0) &&
-              CHECK_AT(parser->buffer, '-', 1) &&
-              CHECK_AT(parser->buffer, '-', 2)) ||
-             (CHECK_AT(parser->buffer, '.', 0) &&
-              CHECK_AT(parser->buffer, '.', 1) &&
-              CHECK_AT(parser->buffer, '.', 2))) &&
-            IS_BLANKZ_AT(parser->buffer, 3)) break;
-
-        /* Check for a comment. */
-
-        if (CHECK(parser->buffer, '#'))
-            break;
-
-        /* Consume non-blank characters. */
-
-        while (!IS_BLANKZ(parser->buffer))
-        {
-            /* Check for 'x:x' in the flow context. TODO: Fix the test "spec-08-13". */
-
-            if (parser->flow_level
-                    && CHECK(parser->buffer, ':')
-                    && !IS_BLANKZ_AT(parser->buffer, 1)) {
-                yaml_parser_set_scanner_error(parser, "while scanning a plain scalar",
-                        start_mark, "found unexpected ':'");
-                goto error;
-            }
-
-            /* Check for indicators that may end a plain scalar. */
-
-            if ((CHECK(parser->buffer, ':') && IS_BLANKZ_AT(parser->buffer, 1))
-                    || (parser->flow_level &&
-                        (CHECK(parser->buffer, ',') || CHECK(parser->buffer, ':')
-                         || CHECK(parser->buffer, '?') || CHECK(parser->buffer, '[')
-                         || CHECK(parser->buffer, ']') || CHECK(parser->buffer, '{')
-                         || CHECK(parser->buffer, '}'))))
-                break;
-
-            /* Check if we need to join whitespaces and breaks. */
-
-            if (leading_blanks || whitespaces.start != whitespaces.pointer)
-            {
-                if (leading_blanks)
-                {
-                    /* Do we need to fold line breaks? */
-
-                    if (leading_break.start[0] == '\n') {
-                        if (trailing_breaks.start[0] == '\0') {
-                            if (!STRING_EXTEND(parser, string)) goto error;
-                            *(string.pointer++) = ' ';
-                        }
-                        else {
-                            if (!JOIN(parser, string, trailing_breaks)) goto error;
-                            CLEAR(parser, trailing_breaks);
-                        }
-                        CLEAR(parser, leading_break);
-                    }
-                    else {
-                        if (!JOIN(parser, string, leading_break)) goto error;
-                        if (!JOIN(parser, string, trailing_breaks)) goto error;
-                        CLEAR(parser, leading_break);
-                        CLEAR(parser, trailing_breaks);
-                    }
-
-                    leading_blanks = 0;
-                }
-                else
-                {
-                    if (!JOIN(parser, string, whitespaces)) goto error;
-                    CLEAR(parser, whitespaces);
-                }
-            }
-
-            /* Copy the character. */
-
-            if (!READ(parser, string)) goto error;
-
-            end_mark = parser->mark;
-
-            if (!CACHE(parser, 2)) goto error;
-        }
-
-        /* Is it the end? */
-
-        if (!(IS_BLANK(parser->buffer) || IS_BREAK(parser->buffer)))
-            break;
-
-        /* Consume blank characters. */
-
-        if (!CACHE(parser, 1)) goto error;
-
-        while (IS_BLANK(parser->buffer) || IS_BREAK(parser->buffer))
-        {
-            if (IS_BLANK(parser->buffer))
-            {
-                /* Check for tab character that abuse intendation. */
-
-                if (leading_blanks && (int)parser->mark.column < indent
-                        && IS_TAB(parser->buffer)) {
-                    yaml_parser_set_scanner_error(parser, "while scanning a plain scalar",
-                            start_mark, "found a tab character that violate intendation");
-                    goto error;
-                }
-
-                /* Consume a space or a tab character. */
-
-                if (!leading_blanks) {
-                    if (!READ(parser, whitespaces)) goto error;
-                }
-                else {
-                    SKIP(parser);
-                }
-            }
-            else
-            {
-                if (!CACHE(parser, 2)) goto error;
-
-                /* Check if it is a first line break. */
-
-                if (!leading_blanks)
-                {
-                    CLEAR(parser, whitespaces);
-                    if (!READ_LINE(parser, leading_break)) goto error;
-                    leading_blanks = 1;
-                }
-                else
-                {
-                    if (!READ_LINE(parser, trailing_breaks)) goto error;
-                }
-            }
-            if (!CACHE(parser, 1)) goto error;
-        }
-
-        /* Check intendation level. */
-
-        if (!parser->flow_level && (int)parser->mark.column < indent)
-            break;
-    }
-
-    /* Create a token. */
-
-    SCALAR_TOKEN_INIT(*token, string.start, string.pointer-string.start,
-            YAML_PLAIN_SCALAR_STYLE, start_mark, end_mark);
-
-    /* Note that we change the 'simple_key_allowed' flag. */
-
-    if (leading_blanks) {
-        parser->simple_key_allowed = 1;
-    }
-
-    STRING_DEL(parser, leading_break);
-    STRING_DEL(parser, trailing_breaks);
-    STRING_DEL(parser, whitespaces);
-
-    return 1;
-
-error:
-    STRING_DEL(parser, string);
-    STRING_DEL(parser, leading_break);
-    STRING_DEL(parser, trailing_breaks);
-    STRING_DEL(parser, whitespaces);
-
-    return 0;
-}
-
diff --git a/scannerc.go b/scannerc.go
new file mode 100644
index 0000000..daad349
--- /dev/null
+++ b/scannerc.go
@@ -0,0 +1,2710 @@
+package goyaml
+
+import (
+	"bytes"
+	"fmt"
+)
+
+// Introduction
+// ************
+//
+// The following notes assume that you are familiar with the YAML specification
+// (http://yaml.org/spec/cvs/current.html).  We mostly follow it, although in
+// some cases we are less restrictive that it requires.
+//
+// The process of transforming a YAML stream into a sequence of events is
+// divided on two steps: Scanning and Parsing.
+//
+// The Scanner transforms the input stream into a sequence of tokens, while the
+// parser transform the sequence of tokens produced by the Scanner into a
+// sequence of parsing events.
+//
+// The Scanner is rather clever and complicated. The Parser, on the contrary,
+// is a straightforward implementation of a recursive-descendant parser (or,
+// LL(1) parser, as it is usually called).
+//
+// Actually there are two issues of Scanning that might be called "clever", the
+// rest is quite straightforward.  The issues are "block collection start" and
+// "simple keys".  Both issues are explained below in details.
+//
+// Here the Scanning step is explained and implemented.  We start with the list
+// of all the tokens produced by the Scanner together with short descriptions.
+//
+// Now, tokens:
+//
+//      STREAM-START(encoding)          # The stream start.
+//      STREAM-END                      # The stream end.
+//      VERSION-DIRECTIVE(major,minor)  # The '%YAML' directive.
+//      TAG-DIRECTIVE(handle,prefix)    # The '%TAG' directive.
+//      DOCUMENT-START                  # '---'
+//      DOCUMENT-END                    # '...'
+//      BLOCK-SEQUENCE-START            # Indentation increase denoting a block
+//      BLOCK-MAPPING-START             # sequence or a block mapping.
+//      BLOCK-END                       # Indentation decrease.
+//      FLOW-SEQUENCE-START             # '['
+//      FLOW-SEQUENCE-END               # ']'
+//      BLOCK-SEQUENCE-START            # '{'
+//      BLOCK-SEQUENCE-END              # '}'
+//      BLOCK-ENTRY                     # '-'
+//      FLOW-ENTRY                      # ','
+//      KEY                             # '?' or nothing (simple keys).
+//      VALUE                           # ':'
+//      ALIAS(anchor)                   # '*anchor'
+//      ANCHOR(anchor)                  # '&anchor'
+//      TAG(handle,suffix)              # '!handle!suffix'
+//      SCALAR(value,style)             # A scalar.
+//
+// The following two tokens are "virtual" tokens denoting the beginning and the
+// end of the stream:
+//
+//      STREAM-START(encoding)
+//      STREAM-END
+//
+// We pass the information about the input stream encoding with the
+// STREAM-START token.
+//
+// The next two tokens are responsible for tags:
+//
+//      VERSION-DIRECTIVE(major,minor)
+//      TAG-DIRECTIVE(handle,prefix)
+//
+// Example:
+//
+//      %YAML   1.1
+//      %TAG    !   !foo
+//      %TAG    !yaml!  tag:yaml.org,2002:
+//      ---
+//
+// The correspoding sequence of tokens:
+//
+//      STREAM-START(utf-8)
+//      VERSION-DIRECTIVE(1,1)
+//      TAG-DIRECTIVE("!","!foo")
+//      TAG-DIRECTIVE("!yaml","tag:yaml.org,2002:")
+//      DOCUMENT-START
+//      STREAM-END
+//
+// Note that the VERSION-DIRECTIVE and TAG-DIRECTIVE tokens occupy a whole
+// line.
+//
+// The document start and end indicators are represented by:
+//
+//      DOCUMENT-START
+//      DOCUMENT-END
+//
+// Note that if a YAML stream contains an implicit document (without '---'
+// and '...' indicators), no DOCUMENT-START and DOCUMENT-END tokens will be
+// produced.
+//
+// In the following examples, we present whole documents together with the
+// produced tokens.
+//
+//      1. An implicit document:
+//
+//          'a scalar'
+//
+//      Tokens:
+//
+//          STREAM-START(utf-8)
+//          SCALAR("a scalar",single-quoted)
+//          STREAM-END
+//
+//      2. An explicit document:
+//
+//          ---
+//          'a scalar'
+//          ...
+//
+//      Tokens:
+//
+//          STREAM-START(utf-8)
+//          DOCUMENT-START
+//          SCALAR("a scalar",single-quoted)
+//          DOCUMENT-END
+//          STREAM-END
+//
+//      3. Several documents in a stream:
+//
+//          'a scalar'
+//          ---
+//          'another scalar'
+//          ---
+//          'yet another scalar'
+//
+//      Tokens:
+//
+//          STREAM-START(utf-8)
+//          SCALAR("a scalar",single-quoted)
+//          DOCUMENT-START
+//          SCALAR("another scalar",single-quoted)
+//          DOCUMENT-START
+//          SCALAR("yet another scalar",single-quoted)
+//          STREAM-END
+//
+// We have already introduced the SCALAR token above.  The following tokens are
+// used to describe aliases, anchors, tag, and scalars:
+//
+//      ALIAS(anchor)
+//      ANCHOR(anchor)
+//      TAG(handle,suffix)
+//      SCALAR(value,style)
+//
+// The following series of examples illustrate the usage of these tokens:
+//
+//      1. A recursive sequence:
+//
+//          &A [ *A ]
+//
+//      Tokens:
+//
+//          STREAM-START(utf-8)
+//          ANCHOR("A")
+//          FLOW-SEQUENCE-START
+//          ALIAS("A")
+//          FLOW-SEQUENCE-END
+//          STREAM-END
+//
+//      2. A tagged scalar:
+//
+//          !!float "3.14"  # A good approximation.
+//
+//      Tokens:
+//
+//          STREAM-START(utf-8)
+//          TAG("!!","float")
+//          SCALAR("3.14",double-quoted)
+//          STREAM-END
+//
+//      3. Various scalar styles:
+//
+//          --- # Implicit empty plain scalars do not produce tokens.
+//          --- a plain scalar
+//          --- 'a single-quoted scalar'
+//          --- "a double-quoted scalar"
+//          --- |-
+//            a literal scalar
+//          --- >-
+//            a folded
+//            scalar
+//
+//      Tokens:
+//
+//          STREAM-START(utf-8)
+//          DOCUMENT-START
+//          DOCUMENT-START
+//          SCALAR("a plain scalar",plain)
+//          DOCUMENT-START
+//          SCALAR("a single-quoted scalar",single-quoted)
+//          DOCUMENT-START
+//          SCALAR("a double-quoted scalar",double-quoted)
+//          DOCUMENT-START
+//          SCALAR("a literal scalar",literal)
+//          DOCUMENT-START
+//          SCALAR("a folded scalar",folded)
+//          STREAM-END
+//
+// Now it's time to review collection-related tokens. We will start with
+// flow collections:
+//
+//      FLOW-SEQUENCE-START
+//      FLOW-SEQUENCE-END
+//      FLOW-MAPPING-START
+//      FLOW-MAPPING-END
+//      FLOW-ENTRY
+//      KEY
+//      VALUE
+//
+// The tokens FLOW-SEQUENCE-START, FLOW-SEQUENCE-END, FLOW-MAPPING-START, and
+// FLOW-MAPPING-END represent the indicators '[', ']', '{', and '}'
+// correspondingly.  FLOW-ENTRY represent the ',' indicator.  Finally the
+// indicators '?' and ':', which are used for denoting mapping keys and values,
+// are represented by the KEY and VALUE tokens.
+//
+// The following examples show flow collections:
+//
+//      1. A flow sequence:
+//
+//          [item 1, item 2, item 3]
+//
+//      Tokens:
+//
+//          STREAM-START(utf-8)
+//          FLOW-SEQUENCE-START
+//          SCALAR("item 1",plain)
+//          FLOW-ENTRY
+//          SCALAR("item 2",plain)
+//          FLOW-ENTRY
+//          SCALAR("item 3",plain)
+//          FLOW-SEQUENCE-END
+//          STREAM-END
+//
+//      2. A flow mapping:
+//
+//          {
+//              a simple key: a value,  # Note that the KEY token is produced.
+//              ? a complex key: another value,
+//          }
+//
+//      Tokens:
+//
+//          STREAM-START(utf-8)
+//          FLOW-MAPPING-START
+//          KEY
+//          SCALAR("a simple key",plain)
+//          VALUE
+//          SCALAR("a value",plain)
+//          FLOW-ENTRY
+//          KEY
+//          SCALAR("a complex key",plain)
+//          VALUE
+//          SCALAR("another value",plain)
+//          FLOW-ENTRY
+//          FLOW-MAPPING-END
+//          STREAM-END
+//
+// A simple key is a key which is not denoted by the '?' indicator.  Note that
+// the Scanner still produce the KEY token whenever it encounters a simple key.
+//
+// For scanning block collections, the following tokens are used (note that we
+// repeat KEY and VALUE here):
+//
+//      BLOCK-SEQUENCE-START
+//      BLOCK-MAPPING-START
+//      BLOCK-END
+//      BLOCK-ENTRY
+//      KEY
+//      VALUE
+//
+// The tokens BLOCK-SEQUENCE-START and BLOCK-MAPPING-START denote indentation
+// increase that precedes a block collection (cf. the INDENT token in Python).
+// The token BLOCK-END denote indentation decrease that ends a block collection
+// (cf. the DEDENT token in Python).  However YAML has some syntax pecularities
+// that makes detections of these tokens more complex.
+//
+// The tokens BLOCK-ENTRY, KEY, and VALUE are used to represent the indicators
+// '-', '?', and ':' correspondingly.
+//
+// The following examples show how the tokens BLOCK-SEQUENCE-START,
+// BLOCK-MAPPING-START, and BLOCK-END are emitted by the Scanner:
+//
+//      1. Block sequences:
+//
+//          - item 1
+//          - item 2
+//          -
+//            - item 3.1
+//            - item 3.2
+//          -
+//            key 1: value 1
+//            key 2: value 2
+//
+//      Tokens:
+//
+//          STREAM-START(utf-8)
+//          BLOCK-SEQUENCE-START
+//          BLOCK-ENTRY
+//          SCALAR("item 1",plain)
+//          BLOCK-ENTRY
+//          SCALAR("item 2",plain)
+//          BLOCK-ENTRY
+//          BLOCK-SEQUENCE-START
+//          BLOCK-ENTRY
+//          SCALAR("item 3.1",plain)
+//          BLOCK-ENTRY
+//          SCALAR("item 3.2",plain)
+//          BLOCK-END
+//          BLOCK-ENTRY
+//          BLOCK-MAPPING-START
+//          KEY
+//          SCALAR("key 1",plain)
+//          VALUE
+//          SCALAR("value 1",plain)
+//          KEY
+//          SCALAR("key 2",plain)
+//          VALUE
+//          SCALAR("value 2",plain)
+//          BLOCK-END
+//          BLOCK-END
+//          STREAM-END
+//
+//      2. Block mappings:
+//
+//          a simple key: a value   # The KEY token is produced here.
+//          ? a complex key
+//          : another value
+//          a mapping:
+//            key 1: value 1
+//            key 2: value 2
+//          a sequence:
+//            - item 1
+//            - item 2
+//
+//      Tokens:
+//
+//          STREAM-START(utf-8)
+//          BLOCK-MAPPING-START
+//          KEY
+//          SCALAR("a simple key",plain)
+//          VALUE
+//          SCALAR("a value",plain)
+//          KEY
+//          SCALAR("a complex key",plain)
+//          VALUE
+//          SCALAR("another value",plain)
+//          KEY
+//          SCALAR("a mapping",plain)
+//          BLOCK-MAPPING-START
+//          KEY
+//          SCALAR("key 1",plain)
+//          VALUE
+//          SCALAR("value 1",plain)
+//          KEY
+//          SCALAR("key 2",plain)
+//          VALUE
+//          SCALAR("value 2",plain)
+//          BLOCK-END
+//          KEY
+//          SCALAR("a sequence",plain)
+//          VALUE
+//          BLOCK-SEQUENCE-START
+//          BLOCK-ENTRY
+//          SCALAR("item 1",plain)
+//          BLOCK-ENTRY
+//          SCALAR("item 2",plain)
+//          BLOCK-END
+//          BLOCK-END
+//          STREAM-END
+//
+// YAML does not always require to start a new block collection from a new
+// line.  If the current line contains only '-', '?', and ':' indicators, a new
+// block collection may start at the current line.  The following examples
+// illustrate this case:
+//
+//      1. Collections in a sequence:
+//
+//          - - item 1
+//            - item 2
+//          - key 1: value 1
+//            key 2: value 2
+//          - ? complex key
+//            : complex value
+//
+//      Tokens:
+//
+//          STREAM-START(utf-8)
+//          BLOCK-SEQUENCE-START
+//          BLOCK-ENTRY
+//          BLOCK-SEQUENCE-START
+//          BLOCK-ENTRY
+//          SCALAR("item 1",plain)
+//          BLOCK-ENTRY
+//          SCALAR("item 2",plain)
+//          BLOCK-END
+//          BLOCK-ENTRY
+//          BLOCK-MAPPING-START
+//          KEY
+//          SCALAR("key 1",plain)
+//          VALUE
+//          SCALAR("value 1",plain)
+//          KEY
+//          SCALAR("key 2",plain)
+//          VALUE
+//          SCALAR("value 2",plain)
+//          BLOCK-END
+//          BLOCK-ENTRY
+//          BLOCK-MAPPING-START
+//          KEY
+//          SCALAR("complex key")
+//          VALUE
+//          SCALAR("complex value")
+//          BLOCK-END
+//          BLOCK-END
+//          STREAM-END
+//
+//      2. Collections in a mapping:
+//
+//          ? a sequence
+//          : - item 1
+//            - item 2
+//          ? a mapping
+//          : key 1: value 1
+//            key 2: value 2
+//
+//      Tokens:
+//
+//          STREAM-START(utf-8)
+//          BLOCK-MAPPING-START
+//          KEY
+//          SCALAR("a sequence",plain)
+//          VALUE
+//          BLOCK-SEQUENCE-START
+//          BLOCK-ENTRY
+//          SCALAR("item 1",plain)
+//          BLOCK-ENTRY
+//          SCALAR("item 2",plain)
+//          BLOCK-END
+//          KEY
+//          SCALAR("a mapping",plain)
+//          VALUE
+//          BLOCK-MAPPING-START
+//          KEY
+//          SCALAR("key 1",plain)
+//          VALUE
+//          SCALAR("value 1",plain)
+//          KEY
+//          SCALAR("key 2",plain)
+//          VALUE
+//          SCALAR("value 2",plain)
+//          BLOCK-END
+//          BLOCK-END
+//          STREAM-END
+//
+// YAML also permits non-indented sequences if they are included into a block
+// mapping.  In this case, the token BLOCK-SEQUENCE-START is not produced:
+//
+//      key:
+//      - item 1    # BLOCK-SEQUENCE-START is NOT produced here.
+//      - item 2
+//
+// Tokens:
+//
+//      STREAM-START(utf-8)
+//      BLOCK-MAPPING-START
+//      KEY
+//      SCALAR("key",plain)
+//      VALUE
+//      BLOCK-ENTRY
+//      SCALAR("item 1",plain)
+//      BLOCK-ENTRY
+//      SCALAR("item 2",plain)
+//      BLOCK-END
+//
+
+// Ensure that the buffer contains the required number of characters.
+// Return true on success, false on failure (reader error or memory error).
+func cache(parser *yaml_parser_t, length int) bool {
+	// [Go] This was inlined: !cache(A, B) -> unread < B && !update(A, B)
+	return parser.unread >= length || yaml_parser_update_buffer(parser, length)
+}
+
+// Advance the buffer pointer.
+func skip(parser *yaml_parser_t) {
+	parser.mark.index++
+	parser.mark.column++
+	parser.unread--
+	parser.buffer_pos += width(parser.buffer[parser.buffer_pos])
+}
+
+func skip_line(parser *yaml_parser_t) {
+	if is_crlf(parser.buffer, parser.buffer_pos) {
+		parser.mark.index += 2
+		parser.mark.column = 0
+		parser.mark.line++
+		parser.unread -= 2
+		parser.buffer_pos += 2
+	} else if is_break(parser.buffer, parser.buffer_pos) {
+		parser.mark.index++
+		parser.mark.column = 0
+		parser.mark.line++
+		parser.unread--
+		parser.buffer_pos += width(parser.buffer[parser.buffer_pos])
+	}
+}
+
+// Copy a character to a string buffer and advance pointers.
+func read(parser *yaml_parser_t, s []byte) []byte {
+	w := width(parser.buffer[parser.buffer_pos])
+	if w == 0 {
+		panic("invalid character sequence")
+	}
+	if len(s) == 0 {
+		s = make([]byte, 0, 32)
+	}
+	if w == 1 && len(s)+w <= cap(s) {
+		s = s[:len(s)+1]
+		s[len(s)-1] = parser.buffer[parser.buffer_pos]
+		parser.buffer_pos++
+	} else {
+		s = append(s, parser.buffer[parser.buffer_pos:parser.buffer_pos+w]...)
+		parser.buffer_pos += w
+	}
+	parser.mark.index++
+	parser.mark.column++
+	parser.unread--
+	return s
+}
+
+// Copy a line break character to a string buffer and advance pointers.
+func read_line(parser *yaml_parser_t, s []byte) []byte {
+	buf := parser.buffer
+	pos := parser.buffer_pos
+	switch {
+	case buf[pos] == '\r' && buf[pos+1] == '\n':
+		// CR LF . LF
+		s = append(s, '\n')
+		parser.buffer_pos += 2
+		parser.mark.index++
+		parser.unread--
+	case buf[pos] == '\r' || buf[pos] == '\n':
+		// CR|LF . LF
+		s = append(s, '\n')
+		parser.buffer_pos += 1
+	case buf[pos] == '\xC2' && buf[pos+1] == '\x85':
+		// NEL . LF
+		s = append(s, '\n')
+		parser.buffer_pos += 2
+	case buf[pos] == '\xE2' && buf[pos+1] == '\x80' && (buf[pos+2] == '\xA8' || buf[pos+2] == '\xA9'):
+		// LS|PS . LS|PS
+		s = append(s, buf[parser.buffer_pos:pos+3]...)
+		parser.buffer_pos += 3
+	default:
+		return s
+	}
+	parser.mark.index++
+	parser.mark.column = 0
+	parser.mark.line++
+	parser.unread--
+	return s
+}
+
+// Get the next token.
+func yaml_parser_scan(parser *yaml_parser_t, token *yaml_token_t) bool {
+	// Erase the token object.
+	*token = yaml_token_t{} // [Go] Is this necessary?
+
+	// No tokens after STREAM-END or error.
+	if parser.stream_end_produced || parser.error != yaml_NO_ERROR {
+		return true
+	}
+
+	// Ensure that the tokens queue contains enough tokens.
+	if !parser.token_available {
+		if !yaml_parser_fetch_more_tokens(parser) {
+			return false
+		}
+	}
+
+	// Fetch the next token from the queue.
+	*token = parser.tokens[parser.tokens_head]
+	parser.tokens_head++
+	parser.tokens_parsed++
+	parser.token_available = false
+
+	if token.typ == yaml_STREAM_END_TOKEN {
+		parser.stream_end_produced = true
+	}
+	return true
+}
+
+// Set the scanner error and return false.
+func yaml_parser_set_scanner_error(parser *yaml_parser_t, context string, context_mark yaml_mark_t, problem string) bool {
+	parser.error = yaml_SCANNER_ERROR
+	parser.context = context
+	parser.context_mark = context_mark
+	parser.problem = problem
+	parser.problem_mark = parser.mark
+	return false
+}
+
+func yaml_parser_set_scanner_tag_error(parser *yaml_parser_t, directive bool, context_mark yaml_mark_t, problem string) bool {
+	context := "while parsing a tag"
+	if directive {
+		context = "while parsing a %TAG directive"
+	}
+	return yaml_parser_set_scanner_error(parser, context, context_mark, "did not find URI escaped octet")
+}
+
+func trace(args ...interface{}) func() {
+	pargs := append([]interface{}{"+++"}, args...)
+	fmt.Println(pargs...)
+	pargs = append([]interface{}{"---"}, args...)
+	return func() { fmt.Println(pargs...) }
+}
+
+// Ensure that the tokens queue contains at least one token which can be
+// returned to the Parser.
+func yaml_parser_fetch_more_tokens(parser *yaml_parser_t) bool {
+	// While we need more tokens to fetch, do it.
+	for {
+		// Check if we really need to fetch more tokens.
+		need_more_tokens := false
+
+		if parser.tokens_head == len(parser.tokens) {
+			// Queue is empty.
+			need_more_tokens = true
+		} else {
+			// Check if any potential simple key may occupy the head position.
+			if !yaml_parser_stale_simple_keys(parser) {
+				return false
+			}
+
+			for i := range parser.simple_keys {
+				simple_key := &parser.simple_keys[i]
+				if simple_key.possible && simple_key.token_number == parser.tokens_parsed {
+					need_more_tokens = true
+					break
+				}
+			}
+		}
+
+		// We are finished.
+		if !need_more_tokens {
+			break
+		}
+		// Fetch the next token.
+		if !yaml_parser_fetch_next_token(parser) {
+			return false
+		}
+	}
+
+	parser.token_available = true
+	return true
+}
+
+// The dispatcher for token fetchers.
+func yaml_parser_fetch_next_token(parser *yaml_parser_t) bool {
+	// Ensure that the buffer is initialized.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+
+	// Check if we just started scanning.  Fetch STREAM-START then.
+	if !parser.stream_start_produced {
+		return yaml_parser_fetch_stream_start(parser)
+	}
+
+	// Eat whitespaces and comments until we reach the next token.
+	if !yaml_parser_scan_to_next_token(parser) {
+		return false
+	}
+
+	// Remove obsolete potential simple keys.
+	if !yaml_parser_stale_simple_keys(parser) {
+		return false
+	}
+
+	// Check the indentation level against the current column.
+	if !yaml_parser_unroll_indent(parser, parser.mark.column) {
+		return false
+	}
+
+	// Ensure that the buffer contains at least 4 characters.  4 is the length
+	// of the longest indicators ('--- ' and '... ').
+	if parser.unread < 4 && !yaml_parser_update_buffer(parser, 4) {
+		return false
+	}
+
+	// Is it the end of the stream?
+	if is_z(parser.buffer, parser.buffer_pos) {
+		return yaml_parser_fetch_stream_end(parser)
+	}
+
+	// Is it a directive?
+	if parser.mark.column == 0 && parser.buffer[parser.buffer_pos] == '%' {
+		return yaml_parser_fetch_directive(parser)
+	}
+
+	buf := parser.buffer
+	pos := parser.buffer_pos
+
+	// Is it the document start indicator?
+	if parser.mark.column == 0 && buf[pos] == '-' && buf[pos+1] == '-' && buf[pos+2] == '-' && is_blankz(buf, pos+3) {
+		return yaml_parser_fetch_document_indicator(parser, yaml_DOCUMENT_START_TOKEN)
+	}
+
+	// Is it the document end indicator?
+	if parser.mark.column == 0 && buf[pos] == '.' && buf[pos+1] == '.' && buf[pos+2] == '.' && is_blankz(buf, pos+3) {
+		return yaml_parser_fetch_document_indicator(parser, yaml_DOCUMENT_END_TOKEN)
+	}
+
+	// Is it the flow sequence start indicator?
+	if buf[pos] == '[' {
+		return yaml_parser_fetch_flow_collection_start(parser, yaml_FLOW_SEQUENCE_START_TOKEN)
+	}
+
+	// Is it the flow mapping start indicator?
+	if parser.buffer[parser.buffer_pos] == '{' {
+		return yaml_parser_fetch_flow_collection_start(parser, yaml_FLOW_MAPPING_START_TOKEN)
+	}
+
+	// Is it the flow sequence end indicator?
+	if parser.buffer[parser.buffer_pos] == ']' {
+		return yaml_parser_fetch_flow_collection_end(parser,
+			yaml_FLOW_SEQUENCE_END_TOKEN)
+	}
+
+	// Is it the flow mapping end indicator?
+	if parser.buffer[parser.buffer_pos] == '}' {
+		return yaml_parser_fetch_flow_collection_end(parser,
+			yaml_FLOW_MAPPING_END_TOKEN)
+	}
+
+	// Is it the flow entry indicator?
+	if parser.buffer[parser.buffer_pos] == ',' {
+		return yaml_parser_fetch_flow_entry(parser)
+	}
+
+	// Is it the block entry indicator?
+	if parser.buffer[parser.buffer_pos] == '-' && is_blankz(parser.buffer, parser.buffer_pos+1) {
+		return yaml_parser_fetch_block_entry(parser)
+	}
+
+	// Is it the key indicator?
+	if parser.buffer[parser.buffer_pos] == '?' && (parser.flow_level > 0 || is_blankz(parser.buffer, parser.buffer_pos+1)) {
+		return yaml_parser_fetch_key(parser)
+	}
+
+	// Is it the value indicator?
+	if parser.buffer[parser.buffer_pos] == ':' && (parser.flow_level > 0 || is_blankz(parser.buffer, parser.buffer_pos+1)) {
+		return yaml_parser_fetch_value(parser)
+	}
+
+	// Is it an alias?
+	if parser.buffer[parser.buffer_pos] == '*' {
+		return yaml_parser_fetch_anchor(parser, yaml_ALIAS_TOKEN)
+	}
+
+	// Is it an anchor?
+	if parser.buffer[parser.buffer_pos] == '&' {
+		return yaml_parser_fetch_anchor(parser, yaml_ANCHOR_TOKEN)
+	}
+
+	// Is it a tag?
+	if parser.buffer[parser.buffer_pos] == '!' {
+		return yaml_parser_fetch_tag(parser)
+	}
+
+	// Is it a literal scalar?
+	if parser.buffer[parser.buffer_pos] == '|' && parser.flow_level == 0 {
+		return yaml_parser_fetch_block_scalar(parser, true)
+	}
+
+	// Is it a folded scalar?
+	if parser.buffer[parser.buffer_pos] == '>' && parser.flow_level == 0 {
+		return yaml_parser_fetch_block_scalar(parser, false)
+	}
+
+	// Is it a single-quoted scalar?
+	if parser.buffer[parser.buffer_pos] == '\'' {
+		return yaml_parser_fetch_flow_scalar(parser, true)
+	}
+
+	// Is it a double-quoted scalar?
+	if parser.buffer[parser.buffer_pos] == '"' {
+		return yaml_parser_fetch_flow_scalar(parser, false)
+	}
+
+	// Is it a plain scalar?
+	//
+	// A plain scalar may start with any non-blank characters except
+	//
+	//      '-', '?', ':', ',', '[', ']', '{', '}',
+	//      '#', '&', '*', '!', '|', '>', '\'', '\"',
+	//      '%', '@', '`'.
+	//
+	// In the block context (and, for the '-' indicator, in the flow context
+	// too), it may also start with the characters
+	//
+	//      '-', '?', ':'
+	//
+	// if it is followed by a non-space character.
+	//
+	// The last rule is more restrictive than the specification requires.
+	// [Go] Make this logic more reasonable.
+	//switch parser.buffer[parser.buffer_pos] {
+	//case '-', '?', ':', ',', '?', '-', ',', ':', ']', '[', '}', '{', '&', '#', '!', '*', '>', '|', '"', '\'', '@', '%', '-', '`':
+	//}
+	if !(is_blankz(parser.buffer, parser.buffer_pos) || parser.buffer[parser.buffer_pos] == '-' ||
+		parser.buffer[parser.buffer_pos] == '?' || parser.buffer[parser.buffer_pos] == ':' ||
+		parser.buffer[parser.buffer_pos] == ',' || parser.buffer[parser.buffer_pos] == '[' ||
+		parser.buffer[parser.buffer_pos] == ']' || parser.buffer[parser.buffer_pos] == '{' ||
+		parser.buffer[parser.buffer_pos] == '}' || parser.buffer[parser.buffer_pos] == '#' ||
+		parser.buffer[parser.buffer_pos] == '&' || parser.buffer[parser.buffer_pos] == '*' ||
+		parser.buffer[parser.buffer_pos] == '!' || parser.buffer[parser.buffer_pos] == '|' ||
+		parser.buffer[parser.buffer_pos] == '>' || parser.buffer[parser.buffer_pos] == '\'' ||
+		parser.buffer[parser.buffer_pos] == '"' || parser.buffer[parser.buffer_pos] == '%' ||
+		parser.buffer[parser.buffer_pos] == '@' || parser.buffer[parser.buffer_pos] == '`') ||
+		(parser.buffer[parser.buffer_pos] == '-' && !is_blank(parser.buffer, parser.buffer_pos+1)) ||
+		(parser.flow_level == 0 &&
+			(parser.buffer[parser.buffer_pos] == '?' || parser.buffer[parser.buffer_pos] == ':') &&
+			!is_blankz(parser.buffer, parser.buffer_pos+1)) {
+		return yaml_parser_fetch_plain_scalar(parser)
+	}
+
+	// If we don't determine the token type so far, it is an error.
+	return yaml_parser_set_scanner_error(parser,
+		"while scanning for the next token", parser.mark,
+		"found character that cannot start any token")
+}
+
+// Check the list of potential simple keys and remove the positions that
+// cannot contain simple keys anymore.
+func yaml_parser_stale_simple_keys(parser *yaml_parser_t) bool {
+	// Check for a potential simple key for each flow level.
+	for i := range parser.simple_keys {
+		simple_key := &parser.simple_keys[i]
+
+		// The specification requires that a simple key
+		//
+		//  - is limited to a single line,
+		//  - is shorter than 1024 characters.
+		if simple_key.possible && (simple_key.mark.line < parser.mark.line || simple_key.mark.index+1024 < parser.mark.index) {
+
+			// Check if the potential simple key to be removed is required.
+			if simple_key.required {
+				return yaml_parser_set_scanner_error(parser,
+					"while scanning a simple key", simple_key.mark,
+					"could not find expected ':'")
+			}
+			simple_key.possible = false
+		}
+	}
+	return true
+}
+
+// Check if a simple key may start at the current position and add it if
+// needed.
+func yaml_parser_save_simple_key(parser *yaml_parser_t) bool {
+	// A simple key is required at the current position if the scanner is in
+	// the block context and the current column coincides with the indentation
+	// level.
+
+	required := parser.flow_level == 0 && parser.indent == parser.mark.column
+
+	// A simple key is required only when it is the first token in the current
+	// line.  Therefore it is always allowed.  But we add a check anyway.
+	if required && !parser.simple_key_allowed {
+		panic("should not happen")
+	}
+
+	//
+	// If the current position may start a simple key, save it.
+	//
+	if parser.simple_key_allowed {
+		simple_key := yaml_simple_key_t{
+			possible:     true,
+			required:     required,
+			token_number: parser.tokens_parsed + (len(parser.tokens) - parser.tokens_head),
+		}
+		simple_key.mark = parser.mark
+
+		if !yaml_parser_remove_simple_key(parser) {
+			return false
+		}
+		parser.simple_keys[len(parser.simple_keys)-1] = simple_key
+	}
+	return true
+}
+
+// Remove a potential simple key at the current flow level.
+func yaml_parser_remove_simple_key(parser *yaml_parser_t) bool {
+	i := len(parser.simple_keys) - 1
+	if parser.simple_keys[i].possible {
+		// If the key is required, it is an error.
+		if parser.simple_keys[i].required {
+			return yaml_parser_set_scanner_error(parser,
+				"while scanning a simple key", parser.simple_keys[i].mark,
+				"could not find expected ':'")
+		}
+	}
+	// Remove the key from the stack.
+	parser.simple_keys[i].possible = false
+	return true
+}
+
+// Increase the flow level and resize the simple key list if needed.
+func yaml_parser_increase_flow_level(parser *yaml_parser_t) bool {
+	// Reset the simple key on the next level.
+	parser.simple_keys = append(parser.simple_keys, yaml_simple_key_t{})
+
+	// Increase the flow level.
+	parser.flow_level++
+	return true
+}
+
+// Decrease the flow level.
+func yaml_parser_decrease_flow_level(parser *yaml_parser_t) bool {
+	if parser.flow_level > 0 {
+		parser.flow_level--
+		parser.simple_keys = parser.simple_keys[:len(parser.simple_keys)-1]
+	}
+	return true
+}
+
+// Push the current indentation level to the stack and set the new level
+// the current column is greater than the indentation level.  In this case,
+// append or insert the specified token into the token queue.
+func yaml_parser_roll_indent(parser *yaml_parser_t, column, number int, typ yaml_token_type_t, mark yaml_mark_t) bool {
+	// In the flow context, do nothing.
+	if parser.flow_level > 0 {
+		return true
+	}
+
+	if parser.indent < column {
+		// Push the current indentation level to the stack and set the new
+		// indentation level.
+		parser.indents = append(parser.indents, parser.indent)
+		parser.indent = column
+
+		// Create a token and insert it into the queue.
+		token := yaml_token_t{
+			typ:        typ,
+			start_mark: mark,
+			end_mark:   mark,
+		}
+		if number > -1 {
+			number -= parser.tokens_parsed
+		}
+		yaml_insert_token(parser, number, &token)
+	}
+	return true
+}
+
+// Pop indentation levels from the indents stack until the current level
+// becomes less or equal to the column.  For each intendation level, append
+// the BLOCK-END token.
+func yaml_parser_unroll_indent(parser *yaml_parser_t, column int) bool {
+	// In the flow context, do nothing.
+	if parser.flow_level > 0 {
+		return true
+	}
+
+	// Loop through the intendation levels in the stack.
+	for parser.indent > column {
+		// Create a token and append it to the queue.
+		token := yaml_token_t{
+			typ:        yaml_BLOCK_END_TOKEN,
+			start_mark: parser.mark,
+			end_mark:   parser.mark,
+		}
+		yaml_insert_token(parser, -1, &token)
+
+		// Pop the indentation level.
+		parser.indent = parser.indents[len(parser.indents)-1]
+		parser.indents = parser.indents[:len(parser.indents)-1]
+	}
+	return true
+}
+
+// Initialize the scanner and produce the STREAM-START token.
+func yaml_parser_fetch_stream_start(parser *yaml_parser_t) bool {
+
+	// Set the initial indentation.
+	parser.indent = -1
+
+	// Initialize the simple key stack.
+	parser.simple_keys = append(parser.simple_keys, yaml_simple_key_t{})
+
+	// A simple key is allowed at the beginning of the stream.
+	parser.simple_key_allowed = true
+
+	// We have started.
+	parser.stream_start_produced = true
+
+	// Create the STREAM-START token and append it to the queue.
+	token := yaml_token_t{
+		typ:        yaml_STREAM_START_TOKEN,
+		start_mark: parser.mark,
+		end_mark:   parser.mark,
+		encoding:   parser.encoding,
+	}
+	yaml_insert_token(parser, -1, &token)
+	return true
+}
+
+// Produce the STREAM-END token and shut down the scanner.
+func yaml_parser_fetch_stream_end(parser *yaml_parser_t) bool {
+
+	// Force new line.
+	if parser.mark.column != 0 {
+		parser.mark.column = 0
+		parser.mark.line++
+	}
+
+	// Reset the indentation level.
+	if !yaml_parser_unroll_indent(parser, -1) {
+		return false
+	}
+
+	// Reset simple keys.
+	if !yaml_parser_remove_simple_key(parser) {
+		return false
+	}
+
+	parser.simple_key_allowed = false
+
+	// Create the STREAM-END token and append it to the queue.
+	token := yaml_token_t{
+		typ:        yaml_STREAM_END_TOKEN,
+		start_mark: parser.mark,
+		end_mark:   parser.mark,
+	}
+	yaml_insert_token(parser, -1, &token)
+	return true
+}
+
+// Produce a VERSION-DIRECTIVE or TAG-DIRECTIVE token.
+func yaml_parser_fetch_directive(parser *yaml_parser_t) bool {
+	// Reset the indentation level.
+	if !yaml_parser_unroll_indent(parser, -1) {
+		return false
+	}
+
+	// Reset simple keys.
+	if !yaml_parser_remove_simple_key(parser) {
+		return false
+	}
+
+	parser.simple_key_allowed = false
+
+	// Create the YAML-DIRECTIVE or TAG-DIRECTIVE token.
+	token := yaml_token_t{}
+	if !yaml_parser_scan_directive(parser, &token) {
+		return false
+	}
+	// Append the token to the queue.
+	yaml_insert_token(parser, -1, &token)
+	return true
+}
+
+// Produce the DOCUMENT-START or DOCUMENT-END token.
+func yaml_parser_fetch_document_indicator(parser *yaml_parser_t, typ yaml_token_type_t) bool {
+	// Reset the indentation level.
+	if !yaml_parser_unroll_indent(parser, -1) {
+		return false
+	}
+
+	// Reset simple keys.
+	if !yaml_parser_remove_simple_key(parser) {
+		return false
+	}
+
+	parser.simple_key_allowed = false
+
+	// Consume the token.
+	start_mark := parser.mark
+
+	skip(parser)
+	skip(parser)
+	skip(parser)
+
+	end_mark := parser.mark
+
+	// Create the DOCUMENT-START or DOCUMENT-END token.
+	token := yaml_token_t{
+		typ:        typ,
+		start_mark: start_mark,
+		end_mark:   end_mark,
+	}
+	// Append the token to the queue.
+	yaml_insert_token(parser, -1, &token)
+	return true
+}
+
+// Produce the FLOW-SEQUENCE-START or FLOW-MAPPING-START token.
+func yaml_parser_fetch_flow_collection_start(parser *yaml_parser_t, typ yaml_token_type_t) bool {
+	// The indicators '[' and '{' may start a simple key.
+	if !yaml_parser_save_simple_key(parser) {
+		return false
+	}
+
+	// Increase the flow level.
+	if !yaml_parser_increase_flow_level(parser) {
+		return false
+	}
+
+	// A simple key may follow the indicators '[' and '{'.
+	parser.simple_key_allowed = true
+
+	// Consume the token.
+	start_mark := parser.mark
+	skip(parser)
+	end_mark := parser.mark
+
+	// Create the FLOW-SEQUENCE-START of FLOW-MAPPING-START token.
+	token := yaml_token_t{
+		typ:        typ,
+		start_mark: start_mark,
+		end_mark:   end_mark,
+	}
+	// Append the token to the queue.
+	yaml_insert_token(parser, -1, &token)
+	return true
+}
+
+// Produce the FLOW-SEQUENCE-END or FLOW-MAPPING-END token.
+func yaml_parser_fetch_flow_collection_end(parser *yaml_parser_t, typ yaml_token_type_t) bool {
+	// Reset any potential simple key on the current flow level.
+	if !yaml_parser_remove_simple_key(parser) {
+		return false
+	}
+
+	// Decrease the flow level.
+	if !yaml_parser_decrease_flow_level(parser) {
+		return false
+	}
+
+	// No simple keys after the indicators ']' and '}'.
+	parser.simple_key_allowed = false
+
+	// Consume the token.
+
+	start_mark := parser.mark
+	skip(parser)
+	end_mark := parser.mark
+
+	// Create the FLOW-SEQUENCE-END of FLOW-MAPPING-END token.
+	token := yaml_token_t{
+		typ:        typ,
+		start_mark: start_mark,
+		end_mark:   end_mark,
+	}
+	// Append the token to the queue.
+	yaml_insert_token(parser, -1, &token)
+	return true
+}
+
+// Produce the FLOW-ENTRY token.
+func yaml_parser_fetch_flow_entry(parser *yaml_parser_t) bool {
+	// Reset any potential simple keys on the current flow level.
+	if !yaml_parser_remove_simple_key(parser) {
+		return false
+	}
+
+	// Simple keys are allowed after ','.
+	parser.simple_key_allowed = true
+
+	// Consume the token.
+	start_mark := parser.mark
+	skip(parser)
+	end_mark := parser.mark
+
+	// Create the FLOW-ENTRY token and append it to the queue.
+	token := yaml_token_t{
+		typ:        yaml_FLOW_ENTRY_TOKEN,
+		start_mark: start_mark,
+		end_mark:   end_mark,
+	}
+	yaml_insert_token(parser, -1, &token)
+	return true
+}
+
+// Produce the BLOCK-ENTRY token.
+func yaml_parser_fetch_block_entry(parser *yaml_parser_t) bool {
+	// Check if the scanner is in the block context.
+	if parser.flow_level == 0 {
+		// Check if we are allowed to start a new entry.
+		if !parser.simple_key_allowed {
+			return yaml_parser_set_scanner_error(parser, "", parser.mark,
+				"block sequence entries are not allowed in this context")
+		}
+		// Add the BLOCK-SEQUENCE-START token if needed.
+		if !yaml_parser_roll_indent(parser, parser.mark.column, -1, yaml_BLOCK_SEQUENCE_START_TOKEN, parser.mark) {
+			return false
+		}
+	} else {
+		// It is an error for the '-' indicator to occur in the flow context,
+		// but we let the Parser detect and report about it because the Parser
+		// is able to point to the context.
+	}
+
+	// Reset any potential simple keys on the current flow level.
+	if !yaml_parser_remove_simple_key(parser) {
+		return false
+	}
+
+	// Simple keys are allowed after '-'.
+	parser.simple_key_allowed = true
+
+	// Consume the token.
+	start_mark := parser.mark
+	skip(parser)
+	end_mark := parser.mark
+
+	// Create the BLOCK-ENTRY token and append it to the queue.
+	token := yaml_token_t{
+		typ:        yaml_BLOCK_ENTRY_TOKEN,
+		start_mark: start_mark,
+		end_mark:   end_mark,
+	}
+	yaml_insert_token(parser, -1, &token)
+	return true
+}
+
+// Produce the KEY token.
+func yaml_parser_fetch_key(parser *yaml_parser_t) bool {
+
+	// In the block context, additional checks are required.
+	if parser.flow_level == 0 {
+		// Check if we are allowed to start a new key (not nessesary simple).
+		if !parser.simple_key_allowed {
+			return yaml_parser_set_scanner_error(parser, "", parser.mark,
+				"mapping keys are not allowed in this context")
+		}
+		// Add the BLOCK-MAPPING-START token if needed.
+		if !yaml_parser_roll_indent(parser, parser.mark.column, -1, yaml_BLOCK_MAPPING_START_TOKEN, parser.mark) {
+			return false
+		}
+	}
+
+	// Reset any potential simple keys on the current flow level.
+	if !yaml_parser_remove_simple_key(parser) {
+		return false
+	}
+
+	// Simple keys are allowed after '?' in the block context.
+	parser.simple_key_allowed = parser.flow_level == 0
+
+	// Consume the token.
+	start_mark := parser.mark
+	skip(parser)
+	end_mark := parser.mark
+
+	// Create the KEY token and append it to the queue.
+	token := yaml_token_t{
+		typ:        yaml_KEY_TOKEN,
+		start_mark: start_mark,
+		end_mark:   end_mark,
+	}
+	yaml_insert_token(parser, -1, &token)
+	return true
+}
+
+// Produce the VALUE token.
+func yaml_parser_fetch_value(parser *yaml_parser_t) bool {
+
+	simple_key := &parser.simple_keys[len(parser.simple_keys)-1]
+
+	// Have we found a simple key?
+	if simple_key.possible {
+		// Create the KEY token and insert it into the queue.
+		token := yaml_token_t{
+			typ:        yaml_KEY_TOKEN,
+			start_mark: simple_key.mark,
+			end_mark:   simple_key.mark,
+		}
+		yaml_insert_token(parser, simple_key.token_number-parser.tokens_parsed, &token)
+
+		// In the block context, we may need to add the BLOCK-MAPPING-START token.
+		if !yaml_parser_roll_indent(parser, simple_key.mark.column,
+			simple_key.token_number,
+			yaml_BLOCK_MAPPING_START_TOKEN, simple_key.mark) {
+			return false
+		}
+
+		// Remove the simple key.
+		simple_key.possible = false
+
+		// A simple key cannot follow another simple key.
+		parser.simple_key_allowed = false
+
+	} else {
+		// The ':' indicator follows a complex key.
+
+		// In the block context, extra checks are required.
+		if parser.flow_level == 0 {
+
+			// Check if we are allowed to start a complex value.
+			if !parser.simple_key_allowed {
+				return yaml_parser_set_scanner_error(parser, "", parser.mark,
+					"mapping values are not allowed in this context")
+			}
+
+			// Add the BLOCK-MAPPING-START token if needed.
+			if !yaml_parser_roll_indent(parser, parser.mark.column, -1, yaml_BLOCK_MAPPING_START_TOKEN, parser.mark) {
+				return false
+			}
+		}
+
+		// Simple keys after ':' are allowed in the block context.
+		parser.simple_key_allowed = parser.flow_level == 0
+	}
+
+	// Consume the token.
+	start_mark := parser.mark
+	skip(parser)
+	end_mark := parser.mark
+
+	// Create the VALUE token and append it to the queue.
+	token := yaml_token_t{
+		typ:        yaml_VALUE_TOKEN,
+		start_mark: start_mark,
+		end_mark:   end_mark,
+	}
+	yaml_insert_token(parser, -1, &token)
+	return true
+}
+
+// Produce the ALIAS or ANCHOR token.
+func yaml_parser_fetch_anchor(parser *yaml_parser_t, typ yaml_token_type_t) bool {
+	// An anchor or an alias could be a simple key.
+	if !yaml_parser_save_simple_key(parser) {
+		return false
+	}
+
+	// A simple key cannot follow an anchor or an alias.
+	parser.simple_key_allowed = false
+
+	// Create the ALIAS or ANCHOR token and append it to the queue.
+	var token yaml_token_t
+	if !yaml_parser_scan_anchor(parser, &token, typ) {
+		return false
+	}
+	yaml_insert_token(parser, -1, &token)
+	return true
+}
+
+// Produce the TAG token.
+func yaml_parser_fetch_tag(parser *yaml_parser_t) bool {
+	// A tag could be a simple key.
+	if !yaml_parser_save_simple_key(parser) {
+		return false
+	}
+
+	// A simple key cannot follow a tag.
+	parser.simple_key_allowed = false
+
+	// Create the TAG token and append it to the queue.
+	var token yaml_token_t
+	if !yaml_parser_scan_tag(parser, &token) {
+		return false
+	}
+	yaml_insert_token(parser, -1, &token)
+	return true
+}
+
+// Produce the SCALAR(...,literal) or SCALAR(...,folded) tokens.
+func yaml_parser_fetch_block_scalar(parser *yaml_parser_t, literal bool) bool {
+	// Remove any potential simple keys.
+	if !yaml_parser_remove_simple_key(parser) {
+		return false
+	}
+
+	// A simple key may follow a block scalar.
+	parser.simple_key_allowed = true
+
+	// Create the SCALAR token and append it to the queue.
+	var token yaml_token_t
+	if !yaml_parser_scan_block_scalar(parser, &token, literal) {
+		return false
+	}
+	yaml_insert_token(parser, -1, &token)
+	return true
+}
+
+// Produce the SCALAR(...,single-quoted) or SCALAR(...,double-quoted) tokens.
+func yaml_parser_fetch_flow_scalar(parser *yaml_parser_t, single bool) bool {
+	// A plain scalar could be a simple key.
+	if !yaml_parser_save_simple_key(parser) {
+		return false
+	}
+
+	// A simple key cannot follow a flow scalar.
+	parser.simple_key_allowed = false
+
+	// Create the SCALAR token and append it to the queue.
+	var token yaml_token_t
+	if !yaml_parser_scan_flow_scalar(parser, &token, single) {
+		return false
+	}
+	yaml_insert_token(parser, -1, &token)
+	return true
+}
+
+// Produce the SCALAR(...,plain) token.
+func yaml_parser_fetch_plain_scalar(parser *yaml_parser_t) bool {
+	// A plain scalar could be a simple key.
+	if !yaml_parser_save_simple_key(parser) {
+		return false
+	}
+
+	// A simple key cannot follow a flow scalar.
+	parser.simple_key_allowed = false
+
+	// Create the SCALAR token and append it to the queue.
+	var token yaml_token_t
+	if !yaml_parser_scan_plain_scalar(parser, &token) {
+		return false
+	}
+	yaml_insert_token(parser, -1, &token)
+	return true
+}
+
+// Eat whitespaces and comments until the next token is found.
+func yaml_parser_scan_to_next_token(parser *yaml_parser_t) bool {
+
+	// Until the next token is not found.
+	for {
+		// Allow the BOM mark to start a line.
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+		if parser.mark.column == 0 && is_bom(parser.buffer, parser.buffer_pos) {
+			skip(parser)
+		}
+
+		// Eat whitespaces.
+		// Tabs are allowed:
+		//  - in the flow context
+		//  - in the block context, but not at the beginning of the line or
+		//  after '-', '?', or ':' (complex value).
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+
+		for parser.buffer[parser.buffer_pos] == ' ' || ((parser.flow_level > 0 || !parser.simple_key_allowed) && parser.buffer[parser.buffer_pos] == '\t') {
+			skip(parser)
+			if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+				return false
+			}
+		}
+
+		// Eat a comment until a line break.
+		if parser.buffer[parser.buffer_pos] == '#' {
+			for !is_breakz(parser.buffer, parser.buffer_pos) {
+				skip(parser)
+				if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+					return false
+				}
+			}
+		}
+
+		// If it is a line break, eat it.
+		if is_break(parser.buffer, parser.buffer_pos) {
+			if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) {
+				return false
+			}
+			skip_line(parser)
+
+			// In the block context, a new line may start a simple key.
+			if parser.flow_level == 0 {
+				parser.simple_key_allowed = true
+			}
+		} else {
+			break // We have found a token.
+		}
+	}
+
+	return true
+}
+
+// Scan a YAML-DIRECTIVE or TAG-DIRECTIVE token.
+//
+// Scope:
+//      %YAML    1.1    # a comment \n
+//      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+//      %TAG    !yaml!  tag:yaml.org,2002:  \n
+//      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+//
+func yaml_parser_scan_directive(parser *yaml_parser_t, token *yaml_token_t) bool {
+	// Eat '%'.
+	start_mark := parser.mark
+	skip(parser)
+
+	// Scan the directive name.
+	var name []byte
+	if !yaml_parser_scan_directive_name(parser, start_mark, &name) {
+		return false
+	}
+
+	// Is it a YAML directive?
+	if bytes.Equal(name, []byte("YAML")) {
+		// Scan the VERSION directive value.
+		var major, minor int8
+		if !yaml_parser_scan_version_directive_value(parser, start_mark, &major, &minor) {
+			return false
+		}
+		end_mark := parser.mark
+
+		// Create a VERSION-DIRECTIVE token.
+		*token = yaml_token_t{
+			typ:        yaml_VERSION_DIRECTIVE_TOKEN,
+			start_mark: start_mark,
+			end_mark:   end_mark,
+			major:      major,
+			minor:      minor,
+		}
+
+		// Is it a TAG directive?
+	} else if bytes.Equal(name, []byte("TAG")) {
+		// Scan the TAG directive value.
+		var handle, prefix []byte
+		if !yaml_parser_scan_tag_directive_value(parser, start_mark, &handle, &prefix) {
+			return false
+		}
+		end_mark := parser.mark
+
+		// Create a TAG-DIRECTIVE token.
+		*token = yaml_token_t{
+			typ:        yaml_TAG_DIRECTIVE_TOKEN,
+			start_mark: start_mark,
+			end_mark:   end_mark,
+			value:      handle,
+			prefix:     prefix,
+		}
+
+		// Unknown directive.
+	} else {
+		yaml_parser_set_scanner_error(parser, "while scanning a directive",
+			start_mark, "found uknown directive name")
+		return false
+	}
+
+	// Eat the rest of the line including any comments.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+
+	for is_blank(parser.buffer, parser.buffer_pos) {
+		skip(parser)
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+	}
+
+	if parser.buffer[parser.buffer_pos] == '#' {
+		for !is_breakz(parser.buffer, parser.buffer_pos) {
+			skip(parser)
+			if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+				return false
+			}
+		}
+	}
+
+	// Check if we are at the end of the line.
+	if !is_breakz(parser.buffer, parser.buffer_pos) {
+		yaml_parser_set_scanner_error(parser, "while scanning a directive",
+			start_mark, "did not find expected comment or line break")
+		return false
+	}
+
+	// Eat a line break.
+	if is_break(parser.buffer, parser.buffer_pos) {
+		if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) {
+			return false
+		}
+		skip_line(parser)
+	}
+
+	return true
+}
+
+// Scan the directive name.
+//
+// Scope:
+//      %YAML   1.1     # a comment \n
+//       ^^^^
+//      %TAG    !yaml!  tag:yaml.org,2002:  \n
+//       ^^^
+//
+func yaml_parser_scan_directive_name(parser *yaml_parser_t, start_mark yaml_mark_t, name *[]byte) bool {
+	// Consume the directive name.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+
+	var s []byte
+	for is_alpha(parser.buffer, parser.buffer_pos) {
+		s = read(parser, s)
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+	}
+
+	// Check if the name is empty.
+	if len(s) == 0 {
+		yaml_parser_set_scanner_error(parser, "while scanning a directive",
+			start_mark, "could not find expected directive name")
+		return false
+	}
+
+	// Check for an blank character after the name.
+	if !is_blankz(parser.buffer, parser.buffer_pos) {
+		yaml_parser_set_scanner_error(parser, "while scanning a directive",
+			start_mark, "found unexpected non-alphabetical character")
+		return false
+	}
+	*name = s
+	return true
+}
+
+// Scan the value of VERSION-DIRECTIVE.
+//
+// Scope:
+//      %YAML   1.1     # a comment \n
+//           ^^^^^^
+func yaml_parser_scan_version_directive_value(parser *yaml_parser_t, start_mark yaml_mark_t, major, minor *int8) bool {
+	// Eat whitespaces.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+	for is_blank(parser.buffer, parser.buffer_pos) {
+		skip(parser)
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+	}
+
+	// Consume the major version number.
+	if !yaml_parser_scan_version_directive_number(parser, start_mark, major) {
+		return false
+	}
+
+	// Eat '.'.
+	if parser.buffer[parser.buffer_pos] != '.' {
+		return yaml_parser_set_scanner_error(parser, "while scanning a %YAML directive",
+			start_mark, "did not find expected digit or '.' character")
+	}
+
+	skip(parser)
+
+	// Consume the minor version number.
+	if !yaml_parser_scan_version_directive_number(parser, start_mark, minor) {
+		return false
+	}
+	return true
+}
+
+const max_number_length = 2
+
+// Scan the version number of VERSION-DIRECTIVE.
+//
+// Scope:
+//      %YAML   1.1     # a comment \n
+//              ^
+//      %YAML   1.1     # a comment \n
+//                ^
+func yaml_parser_scan_version_directive_number(parser *yaml_parser_t, start_mark yaml_mark_t, number *int8) bool {
+
+	// Repeat while the next character is digit.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+	var value, length int8
+	for is_digit(parser.buffer, parser.buffer_pos) {
+		// Check if the number is too long.
+		length++
+		if length > max_number_length {
+			return yaml_parser_set_scanner_error(parser, "while scanning a %YAML directive",
+				start_mark, "found extremely long version number")
+		}
+		value = value*10 + int8(as_digit(parser.buffer, parser.buffer_pos))
+		skip(parser)
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+	}
+
+	// Check if the number was present.
+	if length == 0 {
+		return yaml_parser_set_scanner_error(parser, "while scanning a %YAML directive",
+			start_mark, "did not find expected version number")
+	}
+	*number = value
+	return true
+}
+
+// Scan the value of a TAG-DIRECTIVE token.
+//
+// Scope:
+//      %TAG    !yaml!  tag:yaml.org,2002:  \n
+//          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+//
+func yaml_parser_scan_tag_directive_value(parser *yaml_parser_t, start_mark yaml_mark_t, handle, prefix *[]byte) bool {
+	var handle_value, prefix_value []byte
+
+	// Eat whitespaces.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+
+	for is_blank(parser.buffer, parser.buffer_pos) {
+		skip(parser)
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+	}
+
+	// Scan a handle.
+	if !yaml_parser_scan_tag_handle(parser, true, start_mark, &handle_value) {
+		return false
+	}
+
+	// Expect a whitespace.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+	if !is_blank(parser.buffer, parser.buffer_pos) {
+		yaml_parser_set_scanner_error(parser, "while scanning a %TAG directive",
+			start_mark, "did not find expected whitespace")
+		return false
+	}
+
+	// Eat whitespaces.
+	for is_blank(parser.buffer, parser.buffer_pos) {
+		skip(parser)
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+	}
+
+	// Scan a prefix.
+	if !yaml_parser_scan_tag_uri(parser, true, nil, start_mark, &prefix_value) {
+		return false
+	}
+
+	// Expect a whitespace or line break.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+	if !is_blankz(parser.buffer, parser.buffer_pos) {
+		yaml_parser_set_scanner_error(parser, "while scanning a %TAG directive",
+			start_mark, "did not find expected whitespace or line break")
+		return false
+	}
+
+	*handle = handle_value
+	*prefix = prefix_value
+	return true
+}
+
+func yaml_parser_scan_anchor(parser *yaml_parser_t, token *yaml_token_t, typ yaml_token_type_t) bool {
+	var s []byte
+
+	// Eat the indicator character.
+	start_mark := parser.mark
+	skip(parser)
+
+	// Consume the value.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+
+	for is_alpha(parser.buffer, parser.buffer_pos) {
+		s = read(parser, s)
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+	}
+
+	end_mark := parser.mark
+
+	/*
+	 * Check if length of the anchor is greater than 0 and it is followed by
+	 * a whitespace character or one of the indicators:
+	 *
+	 *      '?', ':', ',', ']', '}', '%', '@', '`'.
+	 */
+
+	if len(s) == 0 ||
+		!(is_blankz(parser.buffer, parser.buffer_pos) || parser.buffer[parser.buffer_pos] == '?' ||
+			parser.buffer[parser.buffer_pos] == ':' || parser.buffer[parser.buffer_pos] == ',' ||
+			parser.buffer[parser.buffer_pos] == ']' || parser.buffer[parser.buffer_pos] == '}' ||
+			parser.buffer[parser.buffer_pos] == '%' || parser.buffer[parser.buffer_pos] == '@' ||
+			parser.buffer[parser.buffer_pos] == '`') {
+		context := "while scanning an alias"
+		if typ == yaml_ANCHOR_TOKEN {
+			context = "while scanning an anchor"
+		}
+		yaml_parser_set_scanner_error(parser, context, start_mark,
+			"did not find expected alphabetic or numeric character")
+		return false
+	}
+
+	// Create a token.
+	*token = yaml_token_t{
+		typ:        typ,
+		start_mark: start_mark,
+		end_mark:   end_mark,
+		value:      s,
+	}
+
+	return true
+}
+
+/*
+ * Scan a TAG token.
+ */
+
+func yaml_parser_scan_tag(parser *yaml_parser_t, token *yaml_token_t) bool {
+	var handle, suffix []byte
+
+	start_mark := parser.mark
+
+	// Check if the tag is in the canonical form.
+	if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) {
+		return false
+	}
+
+	if parser.buffer[parser.buffer_pos+1] == '<' {
+		// Keep the handle as ''
+
+		// Eat '!<'
+		skip(parser)
+		skip(parser)
+
+		// Consume the tag value.
+		if !yaml_parser_scan_tag_uri(parser, false, nil, start_mark, &suffix) {
+			return false
+		}
+
+		// Check for '>' and eat it.
+		if parser.buffer[parser.buffer_pos] != '>' {
+			yaml_parser_set_scanner_error(parser, "while scanning a tag",
+				start_mark, "did not find the expected '>'")
+			return false
+		}
+
+		skip(parser)
+	} else {
+		// The tag has either the '!suffix' or the '!handle!suffix' form.
+
+		// First, try to scan a handle.
+		if !yaml_parser_scan_tag_handle(parser, false, start_mark, &handle) {
+			return false
+		}
+
+		// Check if it is, indeed, handle.
+		if handle[0] == '!' && len(handle) > 1 && handle[len(handle)-1] == '!' {
+			// Scan the suffix now.
+			if !yaml_parser_scan_tag_uri(parser, false, nil, start_mark, &suffix) {
+				return false
+			}
+		} else {
+			// It wasn't a handle after all.  Scan the rest of the tag.
+			if !yaml_parser_scan_tag_uri(parser, false, handle, start_mark, &suffix) {
+				return false
+			}
+
+			// Set the handle to '!'.
+			handle = []byte{'!'}
+
+			// A special case: the '!' tag.  Set the handle to '' and the
+			// suffix to '!'.
+			if len(suffix) == 0 {
+				handle, suffix = suffix, handle
+			}
+		}
+	}
+
+	// Check the character which ends the tag.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+	if !is_blankz(parser.buffer, parser.buffer_pos) {
+		yaml_parser_set_scanner_error(parser, "while scanning a tag",
+			start_mark, "did not find expected whitespace or line break")
+		return false
+	}
+
+	end_mark := parser.mark
+
+	// Create a token.
+	*token = yaml_token_t{
+		typ:        yaml_TAG_TOKEN,
+		start_mark: start_mark,
+		end_mark:   end_mark,
+		value:      handle,
+		suffix:     suffix,
+	}
+	return true
+}
+
+// Scan a tag handle.
+func yaml_parser_scan_tag_handle(parser *yaml_parser_t, directive bool, start_mark yaml_mark_t, handle *[]byte) bool {
+	// Check the initial '!' character.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+	if parser.buffer[parser.buffer_pos] != '!' {
+		yaml_parser_set_scanner_tag_error(parser, directive,
+			start_mark, "did not find expected '!'")
+		return false
+	}
+
+	var s []byte
+
+	// Copy the '!' character.
+	s = read(parser, s)
+
+	// Copy all subsequent alphabetical and numerical characters.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+	for is_alpha(parser.buffer, parser.buffer_pos) {
+		s = read(parser, s)
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+	}
+
+	// Check if the trailing character is '!' and copy it.
+	if parser.buffer[parser.buffer_pos] == '!' {
+		s = read(parser, s)
+	} else {
+		// It's either the '!' tag or not really a tag handle.  If it's a %TAG
+		// directive, it's an error.  If it's a tag token, it must be a part of URI.
+		if directive && !(s[0] == '!' && s[1] == 0) {
+			yaml_parser_set_scanner_tag_error(parser, directive,
+				start_mark, "did not find expected '!'")
+			return false
+		}
+	}
+
+	*handle = s
+	return true
+}
+
+// Scan a tag.
+func yaml_parser_scan_tag_uri(parser *yaml_parser_t, directive bool, head []byte, start_mark yaml_mark_t, uri *[]byte) bool {
+	//size_t length = head ? strlen((char *)head) : 0
+	var s []byte
+
+	// Copy the head if needed.
+	//
+	// Note that we don't copy the leading '!' character.
+	if len(head) > 1 {
+		s = append(s, head[1:]...)
+	}
+
+	// Scan the tag.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+
+	// The set of characters that may appear in URI is as follows:
+	//
+	//      '0'-'9', 'A'-'Z', 'a'-'z', '_', '-', ';', '/', '?', ':', '@', '&',
+	//      '=', '+', '$', ',', '.', '!', '~', '*', '\'', '(', ')', '[', ']',
+	//      '%'.
+	// [Go] Convert this into more reasonable logic.
+	for is_alpha(parser.buffer, parser.buffer_pos) || parser.buffer[parser.buffer_pos] == ';' ||
+		parser.buffer[parser.buffer_pos] == '/' || parser.buffer[parser.buffer_pos] == '?' ||
+		parser.buffer[parser.buffer_pos] == ':' || parser.buffer[parser.buffer_pos] == '@' ||
+		parser.buffer[parser.buffer_pos] == '&' || parser.buffer[parser.buffer_pos] == '=' ||
+		parser.buffer[parser.buffer_pos] == '+' || parser.buffer[parser.buffer_pos] == '$' ||
+		parser.buffer[parser.buffer_pos] == ',' || parser.buffer[parser.buffer_pos] == '.' ||
+		parser.buffer[parser.buffer_pos] == '!' || parser.buffer[parser.buffer_pos] == '~' ||
+		parser.buffer[parser.buffer_pos] == '*' || parser.buffer[parser.buffer_pos] == '\'' ||
+		parser.buffer[parser.buffer_pos] == '(' || parser.buffer[parser.buffer_pos] == ')' ||
+		parser.buffer[parser.buffer_pos] == '[' || parser.buffer[parser.buffer_pos] == ']' ||
+		parser.buffer[parser.buffer_pos] == '%' {
+		// Check if it is a URI-escape sequence.
+		if parser.buffer[parser.buffer_pos] == '%' {
+			if !yaml_parser_scan_uri_escapes(parser, directive, start_mark, &s) {
+				return false
+			}
+		} else {
+			s = read(parser, s)
+		}
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+	}
+
+	// Check if the tag is non-empty.
+	if len(s) == 0 {
+		yaml_parser_set_scanner_tag_error(parser, directive,
+			start_mark, "did not find expected tag URI")
+		return false
+	}
+	*uri = s
+	return true
+}
+
+// Decode an URI-escape sequence corresponding to a single UTF-8 character.
+func yaml_parser_scan_uri_escapes(parser *yaml_parser_t, directive bool, start_mark yaml_mark_t, s *[]byte) bool {
+
+	// Decode the required number of characters.
+	w := 1024
+	for w > 0 {
+		// Check for a URI-escaped octet.
+		if parser.unread < 3 && !yaml_parser_update_buffer(parser, 3) {
+			return false
+		}
+
+		if !(parser.buffer[parser.buffer_pos] == '%' &&
+			is_hex(parser.buffer, parser.buffer_pos+1) &&
+			is_hex(parser.buffer, parser.buffer_pos+2)) {
+			return yaml_parser_set_scanner_tag_error(parser, directive,
+				start_mark, "did not find URI escaped octet")
+		}
+
+		// Get the octet.
+		octet := byte((as_hex(parser.buffer, parser.buffer_pos+1) << 4) + as_hex(parser.buffer, parser.buffer_pos+2))
+
+		// If it is the leading octet, determine the length of the UTF-8 sequence.
+		if w == 1024 {
+			w = width(octet)
+			if w == 0 {
+				return yaml_parser_set_scanner_tag_error(parser, directive,
+					start_mark, "found an incorrect leading UTF-8 octet")
+			}
+		} else {
+			// Check if the trailing octet is correct.
+			if octet&0xC0 != 0x80 {
+				return yaml_parser_set_scanner_tag_error(parser, directive,
+					start_mark, "found an incorrect trailing UTF-8 octet")
+			}
+		}
+
+		// Copy the octet and move the pointers.
+		*s = append(*s, octet)
+		skip(parser)
+		skip(parser)
+		skip(parser)
+		w--
+	}
+	return true
+}
+
+// Scan a block scalar.
+func yaml_parser_scan_block_scalar(parser *yaml_parser_t, token *yaml_token_t, literal bool) bool {
+	// Eat the indicator '|' or '>'.
+	start_mark := parser.mark
+	skip(parser)
+
+	// Scan the additional block scalar indicators.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+
+	// Check for a chomping indicator.
+	var chomping, increment int
+	if parser.buffer[parser.buffer_pos] == '+' || parser.buffer[parser.buffer_pos] == '-' {
+		// Set the chomping method and eat the indicator.
+		if parser.buffer[parser.buffer_pos] == '+' {
+			chomping = +1
+		} else {
+			chomping = -1
+		}
+		skip(parser)
+
+		// Check for an indentation indicator.
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+		if is_digit(parser.buffer, parser.buffer_pos) {
+			// Check that the intendation is greater than 0.
+			if parser.buffer[parser.buffer_pos] == '0' {
+				yaml_parser_set_scanner_error(parser, "while scanning a block scalar",
+					start_mark, "found an intendation indicator equal to 0")
+				return false
+			}
+
+			// Get the intendation level and eat the indicator.
+			increment = as_digit(parser.buffer, parser.buffer_pos)
+			skip(parser)
+		}
+
+	} else if is_digit(parser.buffer, parser.buffer_pos) {
+		// Do the same as above, but in the opposite order.
+
+		if parser.buffer[parser.buffer_pos] == '0' {
+			yaml_parser_set_scanner_error(parser, "while scanning a block scalar",
+				start_mark, "found an intendation indicator equal to 0")
+			return false
+		}
+		increment = as_digit(parser.buffer, parser.buffer_pos)
+		skip(parser)
+
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+		if parser.buffer[parser.buffer_pos] == '+' || parser.buffer[parser.buffer_pos] == '-' {
+			if parser.buffer[parser.buffer_pos] == '+' {
+				chomping = +1
+			} else {
+				chomping = -1
+			}
+			skip(parser)
+		}
+	}
+
+	// Eat whitespaces and comments to the end of the line.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+	for is_blank(parser.buffer, parser.buffer_pos) {
+		skip(parser)
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+	}
+	if parser.buffer[parser.buffer_pos] == '#' {
+		for !is_breakz(parser.buffer, parser.buffer_pos) {
+			skip(parser)
+			if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+				return false
+			}
+		}
+	}
+
+	// Check if we are at the end of the line.
+	if !is_breakz(parser.buffer, parser.buffer_pos) {
+		yaml_parser_set_scanner_error(parser, "while scanning a block scalar",
+			start_mark, "did not find expected comment or line break")
+		return false
+	}
+
+	// Eat a line break.
+	if is_break(parser.buffer, parser.buffer_pos) {
+		if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) {
+			return false
+		}
+		skip_line(parser)
+	}
+
+	end_mark := parser.mark
+
+	// Set the intendation level if it was specified.
+	var indent int
+	if increment > 0 {
+		if parser.indent >= 0 {
+			indent = parser.indent + increment
+		} else {
+			indent = increment
+		}
+	}
+
+	// Scan the leading line breaks and determine the indentation level if needed.
+	var s, leading_break, trailing_breaks []byte
+	if !yaml_parser_scan_block_scalar_breaks(parser, &indent, &trailing_breaks, start_mark, &end_mark) {
+		return false
+	}
+
+	// Scan the block scalar content.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+	var leading_blank, trailing_blank bool
+	for parser.mark.column == indent && !is_z(parser.buffer, parser.buffer_pos) {
+		// We are at the beginning of a non-empty line.
+
+		// Is it a trailing whitespace?
+		trailing_blank = is_blank(parser.buffer, parser.buffer_pos)
+
+		// Check if we need to fold the leading line break.
+		if !literal && !leading_blank && !trailing_blank && len(leading_break) > 0 && leading_break[0] == '\n' {
+			// Do we need to join the lines by space?
+			if len(trailing_breaks) == 0 {
+				s = append(s, ' ')
+			}
+		} else {
+			s = append(s, leading_break...)
+		}
+		leading_break = leading_break[:0]
+
+		// Append the remaining line breaks.
+		s = append(s, trailing_breaks...)
+		trailing_breaks = trailing_breaks[:0]
+
+		// Is it a leading whitespace?
+		leading_blank = is_blank(parser.buffer, parser.buffer_pos)
+
+		// Consume the current line.
+		for !is_breakz(parser.buffer, parser.buffer_pos) {
+			s = read(parser, s)
+			if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+				return false
+			}
+		}
+
+		// Consume the line break.
+		if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) {
+			return false
+		}
+
+		leading_break = read_line(parser, leading_break)
+
+		// Eat the following intendation spaces and line breaks.
+		if !yaml_parser_scan_block_scalar_breaks(parser, &indent, &trailing_breaks, start_mark, &end_mark) {
+			return false
+		}
+	}
+
+	// Chomp the tail.
+	if chomping != -1 {
+		s = append(s, leading_break...)
+	}
+	if chomping == 1 {
+		s = append(s, trailing_breaks...)
+	}
+
+	// Create a token.
+	*token = yaml_token_t{
+		typ:        yaml_SCALAR_TOKEN,
+		start_mark: start_mark,
+		end_mark:   end_mark,
+		value:      s,
+		style:      yaml_LITERAL_SCALAR_STYLE,
+	}
+	if !literal {
+		token.style = yaml_FOLDED_SCALAR_STYLE
+	}
+	return true
+}
+
+// Scan intendation spaces and line breaks for a block scalar.  Determine the
+// intendation level if needed.
+func yaml_parser_scan_block_scalar_breaks(parser *yaml_parser_t, indent *int, breaks *[]byte, start_mark yaml_mark_t, end_mark *yaml_mark_t) bool {
+	*end_mark = parser.mark
+
+	// Eat the intendation spaces and line breaks.
+	max_indent := 0
+	for {
+		// Eat the intendation spaces.
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+		for (*indent == 0 || parser.mark.column < *indent) && is_space(parser.buffer, parser.buffer_pos) {
+			skip(parser)
+			if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+				return false
+			}
+		}
+		if parser.mark.column > max_indent {
+			max_indent = parser.mark.column
+		}
+
+		// Check for a tab character messing the intendation.
+		if (*indent == 0 || parser.mark.column < *indent) && is_tab(parser.buffer, parser.buffer_pos) {
+			return yaml_parser_set_scanner_error(parser, "while scanning a block scalar",
+				start_mark, "found a tab character where an intendation space is expected")
+		}
+
+		// Have we found a non-empty line?
+		if !is_break(parser.buffer, parser.buffer_pos) {
+			break
+		}
+
+		// Consume the line break.
+		if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) {
+			return false
+		}
+		// [Go] Should really be returning breaks instead.
+		*breaks = read_line(parser, *breaks)
+		*end_mark = parser.mark
+	}
+
+	// Determine the indentation level if needed.
+	if *indent == 0 {
+		*indent = max_indent
+		if *indent < parser.indent+1 {
+			*indent = parser.indent + 1
+		}
+		if *indent < 1 {
+			*indent = 1
+		}
+	}
+	return true
+}
+
+// Scan a quoted scalar.
+func yaml_parser_scan_flow_scalar(parser *yaml_parser_t, token *yaml_token_t, single bool) bool {
+	// Eat the left quote.
+	start_mark := parser.mark
+	skip(parser)
+
+	// Consume the content of the quoted scalar.
+	var s, leading_break, trailing_breaks, whitespaces []byte
+	for {
+		// Check that there are no document indicators at the beginning of the line.
+		if parser.unread < 4 && !yaml_parser_update_buffer(parser, 4) {
+			return false
+		}
+
+		if parser.mark.column == 0 &&
+			((parser.buffer[parser.buffer_pos+0] == '-' &&
+				parser.buffer[parser.buffer_pos+1] == '-' &&
+				parser.buffer[parser.buffer_pos+2] == '-') ||
+				(parser.buffer[parser.buffer_pos+0] == '.' &&
+					parser.buffer[parser.buffer_pos+1] == '.' &&
+					parser.buffer[parser.buffer_pos+2] == '.')) &&
+			is_blankz(parser.buffer, parser.buffer_pos+3) {
+			yaml_parser_set_scanner_error(parser, "while scanning a quoted scalar",
+				start_mark, "found unexpected document indicator")
+			return false
+		}
+
+		// Check for EOF.
+		if is_z(parser.buffer, parser.buffer_pos) {
+			yaml_parser_set_scanner_error(parser, "while scanning a quoted scalar",
+				start_mark, "found unexpected end of stream")
+			return false
+		}
+
+		// Consume non-blank characters.
+		leading_blanks := false
+		for !is_blankz(parser.buffer, parser.buffer_pos) {
+			if single && parser.buffer[parser.buffer_pos] == '\'' && parser.buffer[parser.buffer_pos+1] == '\'' {
+				// Is is an escaped single quote.
+				s = append(s, '\'')
+				skip(parser)
+				skip(parser)
+
+			} else if single && parser.buffer[parser.buffer_pos] == '\'' {
+				// It is a right single quote.
+				break
+			} else if !single && parser.buffer[parser.buffer_pos] == '"' {
+				// It is a right double quote.
+				break
+
+			} else if !single && parser.buffer[parser.buffer_pos] == '\\' && is_break(parser.buffer, parser.buffer_pos+1) {
+				// It is an escaped line break.
+				if parser.unread < 3 && !yaml_parser_update_buffer(parser, 3) {
+					return false
+				}
+				skip(parser)
+				skip_line(parser)
+				leading_blanks = true
+				break
+
+			} else if !single && parser.buffer[parser.buffer_pos] == '\\' {
+				// It is an escape sequence.
+				code_length := 0
+
+				// Check the escape character.
+				switch parser.buffer[parser.buffer_pos+1] {
+				case '0':
+					s = append(s, 0)
+				case 'a':
+					s = append(s, '\x07')
+				case 'b':
+					s = append(s, '\x08')
+				case 't', '\t':
+					s = append(s, '\x09')
+				case 'n':
+					s = append(s, '\x0A')
+				case 'v':
+					s = append(s, '\x0B')
+				case 'f':
+					s = append(s, '\x0C')
+				case 'r':
+					s = append(s, '\x0D')
+				case 'e':
+					s = append(s, '\x1B')
+				case ' ':
+					s = append(s, '\x20')
+				case '"':
+					s = append(s, '"')
+				case '\'':
+					s = append(s, '\'')
+				case '\\':
+					s = append(s, '\\')
+				case 'N': // NEL (#x85)
+					s = append(s, '\xC2')
+					s = append(s, '\x85')
+				case '_': // #xA0
+					s = append(s, '\xC2')
+					s = append(s, '\xA0')
+				case 'L': // LS (#x2028)
+					s = append(s, '\xE2')
+					s = append(s, '\x80')
+					s = append(s, '\xA8')
+				case 'P': // PS (#x2029)
+					s = append(s, '\xE2')
+					s = append(s, '\x80')
+					s = append(s, '\xA9')
+				case 'x':
+					code_length = 2
+				case 'u':
+					code_length = 4
+				case 'U':
+					code_length = 8
+				default:
+					yaml_parser_set_scanner_error(parser, "while parsing a quoted scalar",
+						start_mark, "found unknown escape character")
+					return false
+				}
+
+				skip(parser)
+				skip(parser)
+
+				// Consume an arbitrary escape code.
+				if code_length > 0 {
+					var value int
+
+					// Scan the character value.
+					if parser.unread < code_length && !yaml_parser_update_buffer(parser, code_length) {
+						return false
+					}
+					for k := 0; k < code_length; k++ {
+						if !is_hex(parser.buffer, parser.buffer_pos+k) {
+							yaml_parser_set_scanner_error(parser, "while parsing a quoted scalar",
+								start_mark, "did not find expected hexdecimal number")
+							return false
+						}
+						value = (value << 4) + as_hex(parser.buffer, parser.buffer_pos+k)
+					}
+
+					// Check the value and write the character.
+					if (value >= 0xD800 && value <= 0xDFFF) || value > 0x10FFFF {
+						yaml_parser_set_scanner_error(parser, "while parsing a quoted scalar",
+							start_mark, "found invalid Unicode character escape code")
+						return false
+					}
+					if value <= 0x7F {
+						s = append(s, byte(value))
+					} else if value <= 0x7FF {
+						s = append(s, byte(0xC0+(value>>6)))
+						s = append(s, byte(0x80+(value&0x3F)))
+					} else if value <= 0xFFFF {
+						s = append(s, byte(0xE0+(value>>12)))
+						s = append(s, byte(0x80+((value>>6)&0x3F)))
+						s = append(s, byte(0x80+(value&0x3F)))
+					} else {
+						s = append(s, byte(0xF0+(value>>18)))
+						s = append(s, byte(0x80+((value>>12)&0x3F)))
+						s = append(s, byte(0x80+((value>>6)&0x3F)))
+						s = append(s, byte(0x80+(value&0x3F)))
+					}
+
+					// Advance the pointer.
+					for k := 0; k < code_length; k++ {
+						skip(parser)
+					}
+				}
+			} else {
+				// It is a non-escaped non-blank character.
+				s = read(parser, s)
+			}
+			if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) {
+				return false
+			}
+		}
+
+		// Check if we are at the end of the scalar.
+		if single {
+			if parser.buffer[parser.buffer_pos] == '\'' {
+				break
+			}
+		} else {
+			if parser.buffer[parser.buffer_pos] == '"' {
+				break
+			}
+		}
+
+		// Consume blank characters.
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+
+		for is_blank(parser.buffer, parser.buffer_pos) || is_break(parser.buffer, parser.buffer_pos) {
+			if is_blank(parser.buffer, parser.buffer_pos) {
+				// Consume a space or a tab character.
+				if !leading_blanks {
+					whitespaces = read(parser, whitespaces)
+				} else {
+					skip(parser)
+				}
+			} else {
+				if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) {
+					return false
+				}
+
+				// Check if it is a first line break.
+				if !leading_blanks {
+					whitespaces = whitespaces[:0]
+					leading_break = read_line(parser, leading_break)
+					leading_blanks = true
+				} else {
+					trailing_breaks = read_line(parser, trailing_breaks)
+				}
+			}
+			if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+				return false
+			}
+		}
+
+		// Join the whitespaces or fold line breaks.
+		if leading_blanks {
+			// Do we need to fold line breaks?
+			if leading_break[0] == '\n' {
+				if len(trailing_breaks) == 0 {
+					s = append(s, ' ')
+				} else {
+					s = append(s, trailing_breaks...)
+				}
+			} else {
+				s = append(s, leading_break...)
+				s = append(s, trailing_breaks...)
+			}
+			trailing_breaks = trailing_breaks[:0]
+			leading_break = leading_break[:0]
+		} else {
+			s = append(s, whitespaces...)
+			whitespaces = whitespaces[:0]
+		}
+	}
+
+	// Eat the right quote.
+	skip(parser)
+	end_mark := parser.mark
+
+	// Create a token.
+	*token = yaml_token_t{
+		typ:        yaml_SCALAR_TOKEN,
+		start_mark: start_mark,
+		end_mark:   end_mark,
+		value:      s,
+		style:      yaml_SINGLE_QUOTED_SCALAR_STYLE,
+	}
+	if !single {
+		token.style = yaml_DOUBLE_QUOTED_SCALAR_STYLE
+	}
+	return true
+}
+
+// Scan a plain scalar.
+func yaml_parser_scan_plain_scalar(parser *yaml_parser_t, token *yaml_token_t) bool {
+
+	var s, leading_break, trailing_breaks, whitespaces []byte
+	var leading_blanks bool
+	var indent = parser.indent + 1
+
+	start_mark := parser.mark
+	end_mark := parser.mark
+
+	// Consume the content of the plain scalar.
+	for {
+		// Check for a document indicator.
+		if parser.unread < 4 && !yaml_parser_update_buffer(parser, 4) {
+			return false
+		}
+		if parser.mark.column == 0 &&
+			((parser.buffer[parser.buffer_pos+0] == '-' &&
+				parser.buffer[parser.buffer_pos+1] == '-' &&
+				parser.buffer[parser.buffer_pos+2] == '-') ||
+				(parser.buffer[parser.buffer_pos+0] == '.' &&
+					parser.buffer[parser.buffer_pos+1] == '.' &&
+					parser.buffer[parser.buffer_pos+2] == '.')) &&
+			is_blankz(parser.buffer, parser.buffer_pos+3) {
+			break
+		}
+
+		// Check for a comment.
+		if parser.buffer[parser.buffer_pos] == '#' {
+			break
+		}
+
+		// Consume non-blank characters.
+		for !is_blankz(parser.buffer, parser.buffer_pos) {
+
+			// Check for 'x:x' in the flow context. TODO: Fix the test "spec-08-13".
+			if parser.flow_level > 0 &&
+				parser.buffer[parser.buffer_pos] == ':' &&
+				!is_blankz(parser.buffer, parser.buffer_pos+1) {
+				yaml_parser_set_scanner_error(parser, "while scanning a plain scalar",
+					start_mark, "found unexpected ':'")
+				return false
+			}
+
+			// Check for indicators that may end a plain scalar.
+			if (parser.buffer[parser.buffer_pos] == ':' && is_blankz(parser.buffer, parser.buffer_pos+1)) ||
+				(parser.flow_level > 0 &&
+					(parser.buffer[parser.buffer_pos] == ',' || parser.buffer[parser.buffer_pos] == ':' ||
+						parser.buffer[parser.buffer_pos] == '?' || parser.buffer[parser.buffer_pos] == '[' ||
+						parser.buffer[parser.buffer_pos] == ']' || parser.buffer[parser.buffer_pos] == '{' ||
+						parser.buffer[parser.buffer_pos] == '}')) {
+				break
+			}
+
+			// Check if we need to join whitespaces and breaks.
+			if leading_blanks || len(whitespaces) > 0 {
+				if leading_blanks {
+					// Do we need to fold line breaks?
+					if leading_break[0] == '\n' {
+						if len(trailing_breaks) == 0 {
+							s = append(s, ' ')
+						} else {
+							s = append(s, trailing_breaks...)
+						}
+					} else {
+						s = append(s, leading_break...)
+						s = append(s, trailing_breaks...)
+					}
+					trailing_breaks = trailing_breaks[:0]
+					leading_break = leading_break[:0]
+					leading_blanks = false
+				} else {
+					s = append(s, whitespaces...)
+					whitespaces = whitespaces[:0]
+				}
+			}
+
+			// Copy the character.
+			s = read(parser, s)
+
+			end_mark = parser.mark
+			if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) {
+				return false
+			}
+		}
+
+		// Is it the end?
+		if !(is_blank(parser.buffer, parser.buffer_pos) || is_break(parser.buffer, parser.buffer_pos)) {
+			break
+		}
+
+		// Consume blank characters.
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+
+		for is_blank(parser.buffer, parser.buffer_pos) || is_break(parser.buffer, parser.buffer_pos) {
+			if is_blank(parser.buffer, parser.buffer_pos) {
+
+				// Check for tab character that abuse intendation.
+				if leading_blanks && parser.mark.column < indent && is_tab(parser.buffer, parser.buffer_pos) {
+					yaml_parser_set_scanner_error(parser, "while scanning a plain scalar",
+						start_mark, "found a tab character that violate intendation")
+					return false
+				}
+
+				// Consume a space or a tab character.
+				if !leading_blanks {
+					whitespaces = read(parser, whitespaces)
+				} else {
+					skip(parser)
+				}
+			} else {
+				if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) {
+					return false
+				}
+
+				// Check if it is a first line break.
+				if !leading_blanks {
+					whitespaces = whitespaces[:0]
+					leading_break = read_line(parser, leading_break)
+					leading_blanks = true
+				} else {
+					trailing_breaks = read_line(parser, trailing_breaks)
+				}
+			}
+			if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+				return false
+			}
+		}
+
+		// Check intendation level.
+		if parser.flow_level == 0 && parser.mark.column < indent {
+			break
+		}
+	}
+
+	// Create a token.
+	*token = yaml_token_t{
+		typ:        yaml_SCALAR_TOKEN,
+		start_mark: start_mark,
+		end_mark:   end_mark,
+		value:      s,
+		style:      yaml_PLAIN_SCALAR_STYLE,
+	}
+
+	// Note that we change the 'simple_key_allowed' flag.
+	if leading_blanks {
+		parser.simple_key_allowed = true
+	}
+	return true
+}
diff --git a/writer.c b/writer.c
deleted file mode 100644
index b90019f..0000000
--- a/writer.c
+++ /dev/null
@@ -1,141 +0,0 @@
-
-#include "yaml_private.h"
-
-/*
- * Declarations.
- */
-
-static int
-yaml_emitter_set_writer_error(yaml_emitter_t *emitter, const char *problem);
-
-YAML_DECLARE(int)
-yaml_emitter_flush(yaml_emitter_t *emitter);
-
-/*
- * Set the writer error and return 0.
- */
-
-static int
-yaml_emitter_set_writer_error(yaml_emitter_t *emitter, const char *problem)
-{
-    emitter->error = YAML_WRITER_ERROR;
-    emitter->problem = problem;
-
-    return 0;
-}
-
-/*
- * Flush the output buffer.
- */
-
-YAML_DECLARE(int)
-yaml_emitter_flush(yaml_emitter_t *emitter)
-{
-    int low, high;
-
-    assert(emitter);    /* Non-NULL emitter object is expected. */
-    assert(emitter->write_handler); /* Write handler must be set. */
-    assert(emitter->encoding);  /* Output encoding must be set. */
-
-    emitter->buffer.last = emitter->buffer.pointer;
-    emitter->buffer.pointer = emitter->buffer.start;
-
-    /* Check if the buffer is empty. */
-
-    if (emitter->buffer.start == emitter->buffer.last) {
-        return 1;
-    }
-
-    /* If the output encoding is UTF-8, we don't need to recode the buffer. */
-
-    if (emitter->encoding == YAML_UTF8_ENCODING)
-    {
-        if (emitter->write_handler(emitter->write_handler_data,
-                    emitter->buffer.start,
-                    emitter->buffer.last - emitter->buffer.start)) {
-            emitter->buffer.last = emitter->buffer.start;
-            emitter->buffer.pointer = emitter->buffer.start;
-            return 1;
-        }
-        else {
-            return yaml_emitter_set_writer_error(emitter, "write error");
-        }
-    }
-
-    /* Recode the buffer into the raw buffer. */
-
-    low = (emitter->encoding == YAML_UTF16LE_ENCODING ? 0 : 1);
-    high = (emitter->encoding == YAML_UTF16LE_ENCODING ? 1 : 0);
-
-    while (emitter->buffer.pointer != emitter->buffer.last)
-    {
-        unsigned char octet;
-        unsigned int width;
-        unsigned int value;
-        size_t k;
-
-        /* 
-         * See the "reader.c" code for more details on UTF-8 encoding.  Note
-         * that we assume that the buffer contains a valid UTF-8 sequence.
-         */
-
-        /* Read the next UTF-8 character. */
-
-        octet = emitter->buffer.pointer[0];
-
-        width = (octet & 0x80) == 0x00 ? 1 :
-                (octet & 0xE0) == 0xC0 ? 2 :
-                (octet & 0xF0) == 0xE0 ? 3 :
-                (octet & 0xF8) == 0xF0 ? 4 : 0;
-
-        value = (octet & 0x80) == 0x00 ? octet & 0x7F :
-                (octet & 0xE0) == 0xC0 ? octet & 0x1F :
-                (octet & 0xF0) == 0xE0 ? octet & 0x0F :
-                (octet & 0xF8) == 0xF0 ? octet & 0x07 : 0;
-
-        for (k = 1; k < width; k ++) {
-            octet = emitter->buffer.pointer[k];
-            value = (value << 6) + (octet & 0x3F);
-        }
-
-        emitter->buffer.pointer += width;
-
-        /* Write the character. */
-
-        if (value < 0x10000)
-        {
-            emitter->raw_buffer.last[high] = value >> 8;
-            emitter->raw_buffer.last[low] = value & 0xFF;
-
-            emitter->raw_buffer.last += 2;
-        }
-        else
-        {
-            /* Write the character using a surrogate pair (check "reader.c"). */
-
-            value -= 0x10000;
-            emitter->raw_buffer.last[high] = 0xD8 + (value >> 18);
-            emitter->raw_buffer.last[low] = (value >> 10) & 0xFF;
-            emitter->raw_buffer.last[high+2] = 0xDC + ((value >> 8) & 0xFF);
-            emitter->raw_buffer.last[low+2] = value & 0xFF;
-
-            emitter->raw_buffer.last += 4;
-        }
-    }
-
-    /* Write the raw buffer. */
-
-    if (emitter->write_handler(emitter->write_handler_data,
-                emitter->raw_buffer.start,
-                emitter->raw_buffer.last - emitter->raw_buffer.start)) {
-        emitter->buffer.last = emitter->buffer.start;
-        emitter->buffer.pointer = emitter->buffer.start;
-        emitter->raw_buffer.last = emitter->raw_buffer.start;
-        emitter->raw_buffer.pointer = emitter->raw_buffer.start;
-        return 1;
-    }
-    else {
-        return yaml_emitter_set_writer_error(emitter, "write error");
-    }
-}
-
diff --git a/writerc.go b/writerc.go
new file mode 100644
index 0000000..4809bfb
--- /dev/null
+++ b/writerc.go
@@ -0,0 +1,89 @@
+package goyaml
+
+// Set the writer error and return false.
+func yaml_emitter_set_writer_error(emitter *yaml_emitter_t, problem string) bool {
+	emitter.error = yaml_WRITER_ERROR
+	emitter.problem = problem
+	return false
+}
+
+// Flush the output buffer.
+func yaml_emitter_flush(emitter *yaml_emitter_t) bool {
+	if emitter.write_handler == nil {
+		panic("write handler not set")
+	}
+
+	// Check if the buffer is empty.
+	if emitter.buffer_pos == 0 {
+		return true
+	}
+
+	// If the output encoding is UTF-8, we don't need to recode the buffer.
+	if emitter.encoding == yaml_UTF8_ENCODING {
+		if err := emitter.write_handler(emitter, emitter.buffer[:emitter.buffer_pos]); err != nil {
+			return yaml_emitter_set_writer_error(emitter, "write error: "+err.Error())
+		}
+		emitter.buffer_pos = 0
+		return true
+	}
+
+	// Recode the buffer into the raw buffer.
+	var low, high int
+	if emitter.encoding == yaml_UTF16LE_ENCODING {
+		low, high = 0, 1
+	} else {
+		high, low = 1, 0
+	}
+
+	pos := 0
+	for pos < emitter.buffer_pos {
+		// See the "reader.c" code for more details on UTF-8 encoding.  Note
+		// that we assume that the buffer contains a valid UTF-8 sequence.
+
+		// Read the next UTF-8 character.
+		octet := emitter.buffer[pos]
+
+		var w int
+		var value rune
+		switch {
+		case octet&0x80 == 0x00:
+			w, value = 1, rune(octet&0x7F)
+		case octet&0xE0 == 0xC0:
+			w, value = 2, rune(octet&0x1F)
+		case octet&0xF0 == 0xE0:
+			w, value = 3, rune(octet&0x0F)
+		case octet&0xF8 == 0xF0:
+			w, value = 4, rune(octet&0x07)
+		}
+		for k := 1; k < w; k++ {
+			octet = emitter.buffer[pos+k]
+			value = (value << 6) + (rune(octet) & 0x3F)
+		}
+		pos += w
+
+		// Write the character.
+		if value < 0x10000 {
+			var b [2]byte
+			b[high] = byte(value >> 8)
+			b[low] = byte(value & 0xFF)
+			emitter.raw_buffer = append(emitter.raw_buffer, b[0], b[1])
+		} else {
+			// Write the character using a surrogate pair (check "reader.c").
+			var b [4]byte
+			value -= 0x10000
+			b[high] = byte(0xD8 + (value >> 18))
+			b[low] = byte((value >> 10) & 0xFF)
+			b[high+2] = byte(0xDC + ((value >> 8) & 0xFF))
+			b[low+2] = byte(value & 0xFF)
+			emitter.raw_buffer = append(emitter.raw_buffer, b[0], b[1], b[2], b[3])
+		}
+	}
+
+	// Write the raw buffer.
+	if err := emitter.write_handler(emitter, emitter.raw_buffer); err != nil {
+		return yaml_emitter_set_writer_error(emitter, "write error: "+err.Error())
+	}
+	emitter.buffer_pos = 0
+	emitter.raw_buffer = emitter.raw_buffer[:0]
+	return true
+}
diff --git a/yaml.h b/yaml.h
deleted file mode 100644
index 400cae1..0000000
--- a/yaml.h
+++ /dev/null
@@ -1,1971 +0,0 @@
-/**
- * @file yaml.h
- * @brief Public interface for libyaml.
- * 
- * Include the header file with the code:
- * @code
- * #include <yaml.h>
- * @endcode
- */
-
-#ifndef YAML_H
-#define YAML_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-
-/**
- * @defgroup export Export Definitions
- * @{
- */
-
-/** The public API declaration. */
-
-#ifdef WIN32
-#   if defined(YAML_DECLARE_STATIC)
-#       define  YAML_DECLARE(type)  type
-#   elif defined(YAML_DECLARE_EXPORT)
-#       define  YAML_DECLARE(type)  __declspec(dllexport) type
-#   else
-#       define  YAML_DECLARE(type)  __declspec(dllimport) type
-#   endif
-#else
-#   define  YAML_DECLARE(type)  type
-#endif
-
-/** @} */
-
-/**
- * @defgroup version Version Information
- * @{
- */
-
-/**
- * Get the library version as a string.
- *
- * @returns The function returns the pointer to a static string of the form
- * @c "X.Y.Z", where @c X is the major version number, @c Y is a minor version
- * number, and @c Z is the patch version number.
- */
-
-YAML_DECLARE(const char *)
-yaml_get_version_string(void);
-
-/**
- * Get the library version numbers.
- *
- * @param[out]      major   Major version number.
- * @param[out]      minor   Minor version number.
- * @param[out]      patch   Patch version number.
- */
-
-YAML_DECLARE(void)
-yaml_get_version(int *major, int *minor, int *patch);
-
-/** @} */
-
-/**
- * @defgroup basic Basic Types
- * @{
- */
-
-/** The character type (UTF-8 octet). */
-typedef unsigned char yaml_char_t;
-
-/** The version directive data. */
-typedef struct yaml_version_directive_s {
-    /** The major version number. */
-    int major;
-    /** The minor version number. */
-    int minor;
-} yaml_version_directive_t;
-
-/** The tag directive data. */
-typedef struct yaml_tag_directive_s {
-    /** The tag handle. */
-    yaml_char_t *handle;
-    /** The tag prefix. */
-    yaml_char_t *prefix;
-} yaml_tag_directive_t;
-
-/** The stream encoding. */
-typedef enum yaml_encoding_e {
-    /** Let the parser choose the encoding. */
-    YAML_ANY_ENCODING,
-    /** The default UTF-8 encoding. */
-    YAML_UTF8_ENCODING,
-    /** The UTF-16-LE encoding with BOM. */
-    YAML_UTF16LE_ENCODING,
-    /** The UTF-16-BE encoding with BOM. */
-    YAML_UTF16BE_ENCODING
-} yaml_encoding_t;
-
-/** Line break types. */
-
-typedef enum yaml_break_e {
-    /** Let the parser choose the break type. */
-    YAML_ANY_BREAK,
-    /** Use CR for line breaks (Mac style). */
-    YAML_CR_BREAK,
-    /** Use LN for line breaks (Unix style). */
-    YAML_LN_BREAK,
-    /** Use CR LN for line breaks (DOS style). */
-    YAML_CRLN_BREAK
-} yaml_break_t;
-
-/** Many bad things could happen with the parser and emitter. */
-typedef enum yaml_error_type_e {
-    /** No error is produced. */
-    YAML_NO_ERROR,
-
-    /** Cannot allocate or reallocate a block of memory. */
-    YAML_MEMORY_ERROR,
-
-    /** Cannot read or decode the input stream. */
-    YAML_READER_ERROR,
-    /** Cannot scan the input stream. */
-    YAML_SCANNER_ERROR,
-    /** Cannot parse the input stream. */
-    YAML_PARSER_ERROR,
-    /** Cannot compose a YAML document. */
-    YAML_COMPOSER_ERROR,
-
-    /** Cannot write to the output stream. */
-    YAML_WRITER_ERROR,
-    /** Cannot emit a YAML stream. */
-    YAML_EMITTER_ERROR
-} yaml_error_type_t;
-
-/** The pointer position. */
-typedef struct yaml_mark_s {
-    /** The position index. */
-    size_t index;
-
-    /** The position line. */
-    size_t line;
-
-    /** The position column. */
-    size_t column;
-} yaml_mark_t;
-
-/** @} */
-
-/**
- * @defgroup styles Node Styles
- * @{
- */
-
-/** Scalar styles. */
-typedef enum yaml_scalar_style_e {
-    /** Let the emitter choose the style. */
-    YAML_ANY_SCALAR_STYLE,
-
-    /** The plain scalar style. */
-    YAML_PLAIN_SCALAR_STYLE,
-
-    /** The single-quoted scalar style. */
-    YAML_SINGLE_QUOTED_SCALAR_STYLE,
-    /** The double-quoted scalar style. */
-    YAML_DOUBLE_QUOTED_SCALAR_STYLE,
-
-    /** The literal scalar style. */
-    YAML_LITERAL_SCALAR_STYLE,
-    /** The folded scalar style. */
-    YAML_FOLDED_SCALAR_STYLE
-} yaml_scalar_style_t;
-
-/** Sequence styles. */
-typedef enum yaml_sequence_style_e {
-    /** Let the emitter choose the style. */
-    YAML_ANY_SEQUENCE_STYLE,
-
-    /** The block sequence style. */
-    YAML_BLOCK_SEQUENCE_STYLE,
-    /** The flow sequence style. */
-    YAML_FLOW_SEQUENCE_STYLE
-} yaml_sequence_style_t;
-
-/** Mapping styles. */
-typedef enum yaml_mapping_style_e {
-    /** Let the emitter choose the style. */
-    YAML_ANY_MAPPING_STYLE,
-
-    /** The block mapping style. */
-    YAML_BLOCK_MAPPING_STYLE,
-    /** The flow mapping style. */
-    YAML_FLOW_MAPPING_STYLE
-/*    YAML_FLOW_SET_MAPPING_STYLE   */
-} yaml_mapping_style_t;
-
-/** @} */
-
-/**
- * @defgroup tokens Tokens
- * @{
- */
-
-/** Token types. */
-typedef enum yaml_token_type_e {
-    /** An empty token. */
-    YAML_NO_TOKEN,
-
-    /** A STREAM-START token. */
-    YAML_STREAM_START_TOKEN,
-    /** A STREAM-END token. */
-    YAML_STREAM_END_TOKEN,
-
-    /** A VERSION-DIRECTIVE token. */
-    YAML_VERSION_DIRECTIVE_TOKEN,
-    /** A TAG-DIRECTIVE token. */
-    YAML_TAG_DIRECTIVE_TOKEN,
-    /** A DOCUMENT-START token. */
-    YAML_DOCUMENT_START_TOKEN,
-    /** A DOCUMENT-END token. */
-    YAML_DOCUMENT_END_TOKEN,
-
-    /** A BLOCK-SEQUENCE-START token. */
-    YAML_BLOCK_SEQUENCE_START_TOKEN,
-    /** A BLOCK-SEQUENCE-END token. */
-    YAML_BLOCK_MAPPING_START_TOKEN,
-    /** A BLOCK-END token. */
-    YAML_BLOCK_END_TOKEN,
-
-    /** A FLOW-SEQUENCE-START token. */
-    YAML_FLOW_SEQUENCE_START_TOKEN,
-    /** A FLOW-SEQUENCE-END token. */
-    YAML_FLOW_SEQUENCE_END_TOKEN,
-    /** A FLOW-MAPPING-START token. */
-    YAML_FLOW_MAPPING_START_TOKEN,
-    /** A FLOW-MAPPING-END token. */
-    YAML_FLOW_MAPPING_END_TOKEN,
-
-    /** A BLOCK-ENTRY token. */
-    YAML_BLOCK_ENTRY_TOKEN,
-    /** A FLOW-ENTRY token. */
-    YAML_FLOW_ENTRY_TOKEN,
-    /** A KEY token. */
-    YAML_KEY_TOKEN,
-    /** A VALUE token. */
-    YAML_VALUE_TOKEN,
-
-    /** An ALIAS token. */
-    YAML_ALIAS_TOKEN,
-    /** An ANCHOR token. */
-    YAML_ANCHOR_TOKEN,
-    /** A TAG token. */
-    YAML_TAG_TOKEN,
-    /** A SCALAR token. */
-    YAML_SCALAR_TOKEN
-} yaml_token_type_t;
-
-/** The token structure. */
-typedef struct yaml_token_s {
-
-    /** The token type. */
-    yaml_token_type_t type;
-
-    /** The token data. */
-    union {
-
-        /** The stream start (for @c YAML_STREAM_START_TOKEN). */
-        struct {
-            /** The stream encoding. */
-            yaml_encoding_t encoding;
-        } stream_start;
-
-        /** The alias (for @c YAML_ALIAS_TOKEN). */
-        struct {
-            /** The alias value. */
-            yaml_char_t *value;
-        } alias;
-
-        /** The anchor (for @c YAML_ANCHOR_TOKEN). */
-        struct {
-            /** The anchor value. */
-            yaml_char_t *value;
-        } anchor;
-
-        /** The tag (for @c YAML_TAG_TOKEN). */
-        struct {
-            /** The tag handle. */
-            yaml_char_t *handle;
-            /** The tag suffix. */
-            yaml_char_t *suffix;
-        } tag;
-
-        /** The scalar value (for @c YAML_SCALAR_TOKEN). */
-        struct {
-            /** The scalar value. */
-            yaml_char_t *value;
-            /** The length of the scalar value. */
-            size_t length;
-            /** The scalar style. */
-            yaml_scalar_style_t style;
-        } scalar;
-
-        /** The version directive (for @c YAML_VERSION_DIRECTIVE_TOKEN). */
-        struct {
-            /** The major version number. */
-            int major;
-            /** The minor version number. */
-            int minor;
-        } version_directive;
-
-        /** The tag directive (for @c YAML_TAG_DIRECTIVE_TOKEN). */
-        struct {
-            /** The tag handle. */
-            yaml_char_t *handle;
-            /** The tag prefix. */
-            yaml_char_t *prefix;
-        } tag_directive;
-
-    } data;
-
-    /** The beginning of the token. */
-    yaml_mark_t start_mark;
-    /** The end of the token. */
-    yaml_mark_t end_mark;
-
-} yaml_token_t;
-
-/**
- * Free any memory allocated for a token object.
- *
- * @param[in,out]   token   A token object.
- */
-
-YAML_DECLARE(void)
-yaml_token_delete(yaml_token_t *token);
-
-/** @} */
-
-/**
- * @defgroup events Events
- * @{
- */
-
-/** Event types. */
-typedef enum yaml_event_type_e {
-    /** An empty event. */
-    YAML_NO_EVENT,
-
-    /** A STREAM-START event. */
-    YAML_STREAM_START_EVENT,
-    /** A STREAM-END event. */
-    YAML_STREAM_END_EVENT,
-
-    /** A DOCUMENT-START event. */
-    YAML_DOCUMENT_START_EVENT,
-    /** A DOCUMENT-END event. */
-    YAML_DOCUMENT_END_EVENT,
-
-    /** An ALIAS event. */
-    YAML_ALIAS_EVENT,
-    /** A SCALAR event. */
-    YAML_SCALAR_EVENT,
-
-    /** A SEQUENCE-START event. */
-    YAML_SEQUENCE_START_EVENT,
-    /** A SEQUENCE-END event. */
-    YAML_SEQUENCE_END_EVENT,
-
-    /** A MAPPING-START event. */
-    YAML_MAPPING_START_EVENT,
-    /** A MAPPING-END event. */
-    YAML_MAPPING_END_EVENT
-} yaml_event_type_t;
-
-/** The event structure. */
-typedef struct yaml_event_s {
-
-    /** The event type. */
-    yaml_event_type_t type;
-
-    /** The event data. */
-    union {
-        
-        /** The stream parameters (for @c YAML_STREAM_START_EVENT). */
-        struct {
-            /** The document encoding. */
-            yaml_encoding_t encoding;
-        } stream_start;
-
-        /** The document parameters (for @c YAML_DOCUMENT_START_EVENT). */
-        struct {
-            /** The version directive. */
-            yaml_version_directive_t *version_directive;
-
-            /** The list of tag directives. */
-            struct {
-                /** The beginning of the tag directives list. */
-                yaml_tag_directive_t *start;
-                /** The end of the tag directives list. */
-                yaml_tag_directive_t *end;
-            } tag_directives;
-
-            /** Is the document indicator implicit? */
-            int implicit;
-        } document_start;
-
-        /** The document end parameters (for @c YAML_DOCUMENT_END_EVENT). */
-        struct {
-            /** Is the document end indicator implicit? */
-            int implicit;
-        } document_end;
-
-        /** The alias parameters (for @c YAML_ALIAS_EVENT). */
-        struct {
-            /** The anchor. */
-            yaml_char_t *anchor;
-        } alias;
-
-        /** The scalar parameters (for @c YAML_SCALAR_EVENT). */
-        struct {
-            /** The anchor. */
-            yaml_char_t *anchor;
-            /** The tag. */
-            yaml_char_t *tag;
-            /** The scalar value. */
-            yaml_char_t *value;
-            /** The length of the scalar value. */
-            size_t length;
-            /** Is the tag optional for the plain style? */
-            int plain_implicit;
-            /** Is the tag optional for any non-plain style? */
-            int quoted_implicit;
-            /** The scalar style. */
-            yaml_scalar_style_t style;
-        } scalar;
-
-        /** The sequence parameters (for @c YAML_SEQUENCE_START_EVENT). */
-        struct {
-            /** The anchor. */
-            yaml_char_t *anchor;
-            /** The tag. */
-            yaml_char_t *tag;
-            /** Is the tag optional? */
-            int implicit;
-            /** The sequence style. */
-            yaml_sequence_style_t style;
-        } sequence_start;
-
-        /** The mapping parameters (for @c YAML_MAPPING_START_EVENT). */
-        struct {
-            /** The anchor. */
-            yaml_char_t *anchor;
-            /** The tag. */
-            yaml_char_t *tag;
-            /** Is the tag optional? */
-            int implicit;
-            /** The mapping style. */
-            yaml_mapping_style_t style;
-        } mapping_start;
-
-    } data;
-
-    /** The beginning of the event. */
-    yaml_mark_t start_mark;
-    /** The end of the event. */
-    yaml_mark_t end_mark;
-
-} yaml_event_t;
-
-/**
- * Create the STREAM-START event.
- *
- * @param[out]      event       An empty event object.
- * @param[in]       encoding    The stream encoding.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_stream_start_event_initialize(yaml_event_t *event,
-        yaml_encoding_t encoding);
-
-/**
- * Create the STREAM-END event.
- *
- * @param[out]      event       An empty event object.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_stream_end_event_initialize(yaml_event_t *event);
-
-/**
- * Create the DOCUMENT-START event.
- *
- * The @a implicit argument is considered as a stylistic parameter and may be
- * ignored by the emitter.
- *
- * @param[out]      event                   An empty event object.
- * @param[in]       version_directive       The %YAML directive value or
- *                                          @c NULL.
- * @param[in]       tag_directives_start    The beginning of the %TAG
- *                                          directives list.
- * @param[in]       tag_directives_end      The end of the %TAG directives
- *                                          list.
- * @param[in]       implicit                If the document start indicator is
- *                                          implicit.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_document_start_event_initialize(yaml_event_t *event,
-        yaml_version_directive_t *version_directive,
-        yaml_tag_directive_t *tag_directives_start,
-        yaml_tag_directive_t *tag_directives_end,
-        int implicit);
-
-/**
- * Create the DOCUMENT-END event.
- *
- * The @a implicit argument is considered as a stylistic parameter and may be
- * ignored by the emitter.
- *
- * @param[out]      event       An empty event object.
- * @param[in]       implicit    If the document end indicator is implicit.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_document_end_event_initialize(yaml_event_t *event, int implicit);
-
-/**
- * Create an ALIAS event.
- *
- * @param[out]      event       An empty event object.
- * @param[in]       anchor      The anchor value.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_alias_event_initialize(yaml_event_t *event, yaml_char_t *anchor);
-
-/**
- * Create a SCALAR event.
- *
- * The @a style argument may be ignored by the emitter.
- *
- * Either the @a tag attribute or one of the @a plain_implicit and
- * @a quoted_implicit flags must be set.
- *
- * @param[out]      event           An empty event object.
- * @param[in]       anchor          The scalar anchor or @c NULL.
- * @param[in]       tag             The scalar tag or @c NULL.
- * @param[in]       value           The scalar value.
- * @param[in]       length          The length of the scalar value.
- * @param[in]       plain_implicit  If the tag may be omitted for the plain
- *                                  style.
- * @param[in]       quoted_implicit If the tag may be omitted for any
- *                                  non-plain style.
- * @param[in]       style           The scalar style.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_scalar_event_initialize(yaml_event_t *event,
-        yaml_char_t *anchor, yaml_char_t *tag,
-        yaml_char_t *value, int length,
-        int plain_implicit, int quoted_implicit,
-        yaml_scalar_style_t style);
-
-/**
- * Create a SEQUENCE-START event.
- *
- * The @a style argument may be ignored by the emitter.
- *
- * Either the @a tag attribute or the @a implicit flag must be set.
- *
- * @param[out]      event       An empty event object.
- * @param[in]       anchor      The sequence anchor or @c NULL.
- * @param[in]       tag         The sequence tag or @c NULL.
- * @param[in]       implicit    If the tag may be omitted.
- * @param[in]       style       The sequence style.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_sequence_start_event_initialize(yaml_event_t *event,
-        yaml_char_t *anchor, yaml_char_t *tag, int implicit,
-        yaml_sequence_style_t style);
-
-/**
- * Create a SEQUENCE-END event.
- *
- * @param[out]      event       An empty event object.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_sequence_end_event_initialize(yaml_event_t *event);
-
-/**
- * Create a MAPPING-START event.
- *
- * The @a style argument may be ignored by the emitter.
- *
- * Either the @a tag attribute or the @a implicit flag must be set.
- *
- * @param[out]      event       An empty event object.
- * @param[in]       anchor      The mapping anchor or @c NULL.
- * @param[in]       tag         The mapping tag or @c NULL.
- * @param[in]       implicit    If the tag may be omitted.
- * @param[in]       style       The mapping style.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_mapping_start_event_initialize(yaml_event_t *event,
-        yaml_char_t *anchor, yaml_char_t *tag, int implicit,
-        yaml_mapping_style_t style);
-
-/**
- * Create a MAPPING-END event.
- *
- * @param[out]      event       An empty event object.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_mapping_end_event_initialize(yaml_event_t *event);
-
-/**
- * Free any memory allocated for an event object.
- *
- * @param[in,out]   event   An event object.
- */
-
-YAML_DECLARE(void)
-yaml_event_delete(yaml_event_t *event);
-
-/** @} */
-
-/**
- * @defgroup nodes Nodes
- * @{
- */
-
-/** The tag @c !!null with the only possible value: @c null. */
-#define YAML_NULL_TAG       "tag:yaml.org,2002:null"
-/** The tag @c !!bool with the values: @c true and @c falce. */
-#define YAML_BOOL_TAG       "tag:yaml.org,2002:bool"
-/** The tag @c !!str for string values. */
-#define YAML_STR_TAG        "tag:yaml.org,2002:str"
-/** The tag @c !!int for integer values. */
-#define YAML_INT_TAG        "tag:yaml.org,2002:int"
-/** The tag @c !!float for float values. */
-#define YAML_FLOAT_TAG      "tag:yaml.org,2002:float"
-/** The tag @c !!timestamp for date and time values. */
-#define YAML_TIMESTAMP_TAG  "tag:yaml.org,2002:timestamp"
-
-/** The tag @c !!seq is used to denote sequences. */
-#define YAML_SEQ_TAG        "tag:yaml.org,2002:seq"
-/** The tag @c !!map is used to denote mapping. */
-#define YAML_MAP_TAG        "tag:yaml.org,2002:map"
-
-/** The default scalar tag is @c !!str. */
-#define YAML_DEFAULT_SCALAR_TAG     YAML_STR_TAG
-/** The default sequence tag is @c !!seq. */
-#define YAML_DEFAULT_SEQUENCE_TAG   YAML_SEQ_TAG
-/** The default mapping tag is @c !!map. */
-#define YAML_DEFAULT_MAPPING_TAG    YAML_MAP_TAG
-
-/** Node types. */
-typedef enum yaml_node_type_e {
-    /** An empty node. */
-    YAML_NO_NODE,
-
-    /** A scalar node. */
-    YAML_SCALAR_NODE,
-    /** A sequence node. */
-    YAML_SEQUENCE_NODE,
-    /** A mapping node. */
-    YAML_MAPPING_NODE
-} yaml_node_type_t;
-
-/** The forward definition of a document node structure. */
-typedef struct yaml_node_s yaml_node_t;
-
-/** An element of a sequence node. */
-typedef int yaml_node_item_t;
-
-/** An element of a mapping node. */
-typedef struct yaml_node_pair_s {
-    /** The key of the element. */
-    int key;
-    /** The value of the element. */
-    int value;
-} yaml_node_pair_t;
-
-/** The node structure. */
-struct yaml_node_s {
-
-    /** The node type. */
-    yaml_node_type_t type;
-
-    /** The node tag. */
-    yaml_char_t *tag;
-
-    /** The node data. */
-    union {
-        
-        /** The scalar parameters (for @c YAML_SCALAR_NODE). */
-        struct {
-            /** The scalar value. */
-            yaml_char_t *value;
-            /** The length of the scalar value. */
-            size_t length;
-            /** The scalar style. */
-            yaml_scalar_style_t style;
-        } scalar;
-
-        /** The sequence parameters (for @c YAML_SEQUENCE_NODE). */
-        struct {
-            /** The stack of sequence items. */
-            struct {
-                /** The beginning of the stack. */
-                yaml_node_item_t *start;
-                /** The end of the stack. */
-                yaml_node_item_t *end;
-                /** The top of the stack. */
-                yaml_node_item_t *top;
-            } items;
-            /** The sequence style. */
-            yaml_sequence_style_t style;
-        } sequence;
-
-        /** The mapping parameters (for @c YAML_MAPPING_NODE). */
-        struct {
-            /** The stack of mapping pairs (key, value). */
-            struct {
-                /** The beginning of the stack. */
-                yaml_node_pair_t *start;
-                /** The end of the stack. */
-                yaml_node_pair_t *end;
-                /** The top of the stack. */
-                yaml_node_pair_t *top;
-            } pairs;
-            /** The mapping style. */
-            yaml_mapping_style_t style;
-        } mapping;
-
-    } data;
-
-    /** The beginning of the node. */
-    yaml_mark_t start_mark;
-    /** The end of the node. */
-    yaml_mark_t end_mark;
-
-};
-
-/** The document structure. */
-typedef struct yaml_document_s {
-
-    /** The document nodes. */
-    struct {
-        /** The beginning of the stack. */
-        yaml_node_t *start;
-        /** The end of the stack. */
-        yaml_node_t *end;
-        /** The top of the stack. */
-        yaml_node_t *top;
-    } nodes;
-
-    /** The version directive. */
-    yaml_version_directive_t *version_directive;
-
-    /** The list of tag directives. */
-    struct {
-        /** The beginning of the tag directives list. */
-        yaml_tag_directive_t *start;
-        /** The end of the tag directives list. */
-        yaml_tag_directive_t *end;
-    } tag_directives;
-
-    /** Is the document start indicator implicit? */
-    int start_implicit;
-    /** Is the document end indicator implicit? */
-    int end_implicit;
-
-    /** The beginning of the document. */
-    yaml_mark_t start_mark;
-    /** The end of the document. */
-    yaml_mark_t end_mark;
-
-} yaml_document_t;
-
-/**
- * Create a YAML document.
- *
- * @param[out]      document                An empty document object.
- * @param[in]       version_directive       The %YAML directive value or
- *                                          @c NULL.
- * @param[in]       tag_directives_start    The beginning of the %TAG
- *                                          directives list.
- * @param[in]       tag_directives_end      The end of the %TAG directives
- *                                          list.
- * @param[in]       start_implicit          If the document start indicator is
- *                                          implicit.
- * @param[in]       end_implicit            If the document end indicator is
- *                                          implicit.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_document_initialize(yaml_document_t *document,
-        yaml_version_directive_t *version_directive,
-        yaml_tag_directive_t *tag_directives_start,
-        yaml_tag_directive_t *tag_directives_end,
-        int start_implicit, int end_implicit);
-
-/**
- * Delete a YAML document and all its nodes.
- *
- * @param[in,out]   document        A document object.
- */
-
-YAML_DECLARE(void)
-yaml_document_delete(yaml_document_t *document);
-
-/**
- * Get a node of a YAML document.
- *
- * The pointer returned by this function is valid until any of the functions
- * modifying the documents are called.
- *
- * @param[in]       document        A document object.
- * @param[in]       index           The node id.
- *
- * @returns the node objct or @c NULL if @c node_id is out of range.
- */
-
-YAML_DECLARE(yaml_node_t *)
-yaml_document_get_node(yaml_document_t *document, int index);
-
-/**
- * Get the root of a YAML document node.
- *
- * The root object is the first object added to the document.
- *
- * The pointer returned by this function is valid until any of the functions
- * modifying the documents are called.
- *
- * An empty document produced by the parser signifies the end of a YAML
- * stream.
- *
- * @param[in]       document        A document object.
- *
- * @returns the node object or @c NULL if the document is empty.
- */
-
-YAML_DECLARE(yaml_node_t *)
-yaml_document_get_root_node(yaml_document_t *document);
-
-/**
- * Create a SCALAR node and attach it to the document.
- *
- * The @a style argument may be ignored by the emitter.
- *
- * @param[in,out]   document        A document object.
- * @param[in]       tag             The scalar tag.
- * @param[in]       value           The scalar value.
- * @param[in]       length          The length of the scalar value.
- * @param[in]       style           The scalar style.
- *
- * @returns the node id or @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_document_add_scalar(yaml_document_t *document,
-        yaml_char_t *tag, yaml_char_t *value, int length,
-        yaml_scalar_style_t style);
-
-/**
- * Create a SEQUENCE node and attach it to the document.
- *
- * The @a style argument may be ignored by the emitter.
- *
- * @param[in,out]   document    A document object.
- * @param[in]       tag         The sequence tag.
- * @param[in]       style       The sequence style.
- *
- * @returns the node id or @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_document_add_sequence(yaml_document_t *document,
-        yaml_char_t *tag, yaml_sequence_style_t style);
-
-/**
- * Create a MAPPING node and attach it to the document.
- *
- * The @a style argument may be ignored by the emitter.
- *
- * @param[in,out]   document    A document object.
- * @param[in]       tag         The sequence tag.
- * @param[in]       style       The sequence style.
- *
- * @returns the node id or @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_document_add_mapping(yaml_document_t *document,
-        yaml_char_t *tag, yaml_mapping_style_t style);
-
-/**
- * Add an item to a SEQUENCE node.
- *
- * @param[in,out]   document    A document object.
- * @param[in]       sequence    The sequence node id.
- * @param[in]       item        The item node id.
-*
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_document_append_sequence_item(yaml_document_t *document,
-        int sequence, int item);
-
-/**
- * Add a pair of a key and a value to a MAPPING node.
- *
- * @param[in,out]   document    A document object.
- * @param[in]       mapping     The mapping node id.
- * @param[in]       key         The key node id.
- * @param[in]       value       The value node id.
-*
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_document_append_mapping_pair(yaml_document_t *document,
-        int mapping, int key, int value);
-
-/** @} */
-
-/**
- * @defgroup parser Parser Definitions
- * @{
- */
-
-/**
- * The prototype of a read handler.
- *
- * The read handler is called when the parser needs to read more bytes from the
- * source.  The handler should write not more than @a size bytes to the @a
- * buffer.  The number of written bytes should be set to the @a length variable.
- *
- * @param[in,out]   data        A pointer to an application data specified by
- *                              yaml_parser_set_input().
- * @param[out]      buffer      The buffer to write the data from the source.
- * @param[in]       size        The size of the buffer.
- * @param[out]      size_read   The actual number of bytes read from the source.
- *
- * @returns On success, the handler should return @c 1.  If the handler failed,
- * the returned value should be @c 0.  On EOF, the handler should set the
- * @a size_read to @c 0 and return @c 1.
- */
-
-typedef int yaml_read_handler_t(void *data, unsigned char *buffer, size_t size,
-        size_t *size_read);
-
-/**
- * This structure holds information about a potential simple key.
- */
-
-typedef struct yaml_simple_key_s {
-    /** Is a simple key possible? */
-    int possible;
-
-    /** Is a simple key required? */
-    int required;
-
-    /** The number of the token. */
-    size_t token_number;
-
-    /** The position mark. */
-    yaml_mark_t mark;
-} yaml_simple_key_t;
-
-/**
- * The states of the parser.
- */
-typedef enum yaml_parser_state_e {
-    /** Expect STREAM-START. */
-    YAML_PARSE_STREAM_START_STATE,
-    /** Expect the beginning of an implicit document. */
-    YAML_PARSE_IMPLICIT_DOCUMENT_START_STATE,
-    /** Expect DOCUMENT-START. */
-    YAML_PARSE_DOCUMENT_START_STATE,
-    /** Expect the content of a document. */
-    YAML_PARSE_DOCUMENT_CONTENT_STATE,
-    /** Expect DOCUMENT-END. */
-    YAML_PARSE_DOCUMENT_END_STATE,
-    /** Expect a block node. */
-    YAML_PARSE_BLOCK_NODE_STATE,
-    /** Expect a block node or indentless sequence. */
-    YAML_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE,
-    /** Expect a flow node. */
-    YAML_PARSE_FLOW_NODE_STATE,
-    /** Expect the first entry of a block sequence. */
-    YAML_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE,
-    /** Expect an entry of a block sequence. */
-    YAML_PARSE_BLOCK_SEQUENCE_ENTRY_STATE,
-    /** Expect an entry of an indentless sequence. */
-    YAML_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE,
-    /** Expect the first key of a block mapping. */
-    YAML_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE,
-    /** Expect a block mapping key. */
-    YAML_PARSE_BLOCK_MAPPING_KEY_STATE,
-    /** Expect a block mapping value. */
-    YAML_PARSE_BLOCK_MAPPING_VALUE_STATE,
-    /** Expect the first entry of a flow sequence. */
-    YAML_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE,
-    /** Expect an entry of a flow sequence. */
-    YAML_PARSE_FLOW_SEQUENCE_ENTRY_STATE,
-    /** Expect a key of an ordered mapping. */
-    YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE,
-    /** Expect a value of an ordered mapping. */
-    YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE,
-    /** Expect the and of an ordered mapping entry. */
-    YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE,
-    /** Expect the first key of a flow mapping. */
-    YAML_PARSE_FLOW_MAPPING_FIRST_KEY_STATE,
-    /** Expect a key of a flow mapping. */
-    YAML_PARSE_FLOW_MAPPING_KEY_STATE,
-    /** Expect a value of a flow mapping. */
-    YAML_PARSE_FLOW_MAPPING_VALUE_STATE,
-    /** Expect an empty value of a flow mapping. */
-    YAML_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE,
-    /** Expect nothing. */
-    YAML_PARSE_END_STATE
-} yaml_parser_state_t;
-
-/**
- * This structure holds aliases data.
- */
-
-typedef struct yaml_alias_data_s {
-    /** The anchor. */
-    yaml_char_t *anchor;
-    /** The node id. */
-    int index;
-    /** The anchor mark. */
-    yaml_mark_t mark;
-} yaml_alias_data_t;
-
-/**
- * The parser structure.
- *
- * All members are internal.  Manage the structure using the @c yaml_parser_
- * family of functions.
- */
-
-typedef struct yaml_parser_s {
-
-    /**
-     * @name Error handling
-     * @{
-     */
-
-    /** Error type. */
-    yaml_error_type_t error;
-    /** Error description. */
-    const char *problem;
-    /** The byte about which the problem occured. */
-    size_t problem_offset;
-    /** The problematic value (@c -1 is none). */
-    int problem_value;
-    /** The problem position. */
-    yaml_mark_t problem_mark;
-    /** The error context. */
-    const char *context;
-    /** The context position. */
-    yaml_mark_t context_mark;
-
-    /**
-     * @}
-     */
-
-    /**
-     * @name Reader stuff
-     * @{
-     */
-
-    /** Read handler. */
-    yaml_read_handler_t *read_handler;
-
-    /** A pointer for passing to the read handler. */
-    void *read_handler_data;
-
-    /** Standard (string or file) input data. */
-    union {
-        /** String input data. */
-        struct {
-            /** The string start pointer. */
-            const unsigned char *start;
-            /** The string end pointer. */
-            const unsigned char *end;
-            /** The string current position. */
-            const unsigned char *current;
-        } string;
-
-        /** File input data. */
-        FILE *file;
-    } input;
-
-    /** EOF flag */
-    int eof;
-
-    /** The working buffer. */
-    struct {
-        /** The beginning of the buffer. */
-        yaml_char_t *start;
-        /** The end of the buffer. */
-        yaml_char_t *end;
-        /** The current position of the buffer. */
-        yaml_char_t *pointer;
-        /** The last filled position of the buffer. */
-        yaml_char_t *last;
-    } buffer;
-
-    /* The number of unread characters in the buffer. */
-    size_t unread;
-
-    /** The raw buffer. */
-    struct {
-        /** The beginning of the buffer. */
-        unsigned char *start;
-        /** The end of the buffer. */
-        unsigned char *end;
-        /** The current position of the buffer. */
-        unsigned char *pointer;
-        /** The last filled position of the buffer. */
-        unsigned char *last;
-    } raw_buffer;
-
-    /** The input encoding. */
-    yaml_encoding_t encoding;
-
-    /** The offset of the current position (in bytes). */
-    size_t offset;
-
-    /** The mark of the current position. */
-    yaml_mark_t mark;
-
-    /**
-     * @}
-     */
-
-    /**
-     * @name Scanner stuff
-     * @{
-     */
-
-    /** Have we started to scan the input stream? */
-    int stream_start_produced;
-
-    /** Have we reached the end of the input stream? */
-    int stream_end_produced;
-
-    /** The number of unclosed '[' and '{' indicators. */
-    int flow_level;
-
-    /** The tokens queue. */
-    struct {
-        /** The beginning of the tokens queue. */
-        yaml_token_t *start;
-        /** The end of the tokens queue. */
-        yaml_token_t *end;
-        /** The head of the tokens queue. */
-        yaml_token_t *head;
-        /** The tail of the tokens queue. */
-        yaml_token_t *tail;
-    } tokens;
-
-    /** The number of tokens fetched from the queue. */
-    size_t tokens_parsed;
-
-    /* Does the tokens queue contain a token ready for dequeueing. */
-    int token_available;
-
-    /** The indentation levels stack. */
-    struct {
-        /** The beginning of the stack. */
-        int *start;
-        /** The end of the stack. */
-        int *end;
-        /** The top of the stack. */
-        int *top;
-    } indents;
-
-    /** The current indentation level. */
-    int indent;
-
-    /** May a simple key occur at the current position? */
-    int simple_key_allowed;
-
-    /** The stack of simple keys. */
-    struct {
-        /** The beginning of the stack. */
-        yaml_simple_key_t *start;
-        /** The end of the stack. */
-        yaml_simple_key_t *end;
-        /** The top of the stack. */
-        yaml_simple_key_t *top;
-    } simple_keys;
-
-    /**
-     * @}
-     */
-
-    /**
-     * @name Parser stuff
-     * @{
-     */
-
-    /** The parser states stack. */
-    struct {
-        /** The beginning of the stack. */
-        yaml_parser_state_t *start;
-        /** The end of the stack. */
-        yaml_parser_state_t *end;
-        /** The top of the stack. */
-        yaml_parser_state_t *top;
-    } states;
-
-    /** The current parser state. */
-    yaml_parser_state_t state;
-
-    /** The stack of marks. */
-    struct {
-        /** The beginning of the stack. */
-        yaml_mark_t *start;
-        /** The end of the stack. */
-        yaml_mark_t *end;
-        /** The top of the stack. */
-        yaml_mark_t *top;
-    } marks;
-
-    /** The list of TAG directives. */
-    struct {
-        /** The beginning of the list. */
-        yaml_tag_directive_t *start;
-        /** The end of the list. */
-        yaml_tag_directive_t *end;
-        /** The top of the list. */
-        yaml_tag_directive_t *top;
-    } tag_directives;
-
-    /**
-     * @}
-     */
-
-    /**
-     * @name Dumper stuff
-     * @{
-     */
-
-    /** The alias data. */
-    struct {
-        /** The beginning of the list. */
-        yaml_alias_data_t *start;
-        /** The end of the list. */
-        yaml_alias_data_t *end;
-        /** The top of the list. */
-        yaml_alias_data_t *top;
-    } aliases;
-
-    /** The currently parsed document. */
-    yaml_document_t *document;
-
-    /**
-     * @}
-     */
-
-} yaml_parser_t;
-
-/**
- * Initialize a parser.
- *
- * This function creates a new parser object.  An application is responsible
- * for destroying the object using the yaml_parser_delete() function.
- *
- * @param[out]      parser  An empty parser object.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_parser_initialize(yaml_parser_t *parser);
-
-/**
- * Destroy a parser.
- *
- * @param[in,out]   parser  A parser object.
- */
-
-YAML_DECLARE(void)
-yaml_parser_delete(yaml_parser_t *parser);
-
-/**
- * Set a string input.
- *
- * Note that the @a input pointer must be valid while the @a parser object
- * exists.  The application is responsible for destroing @a input after
- * destroying the @a parser.
- *
- * @param[in,out]   parser  A parser object.
- * @param[in]       input   A source data.
- * @param[in]       size    The length of the source data in bytes.
- */
-
-YAML_DECLARE(void)
-yaml_parser_set_input_string(yaml_parser_t *parser,
-        const unsigned char *input, size_t size);
-
-/**
- * Set a file input.
- *
- * @a file should be a file object open for reading.  The application is
- * responsible for closing the @a file.
- *
- * @param[in,out]   parser  A parser object.
- * @param[in]       file    An open file.
- */
-
-YAML_DECLARE(void)
-yaml_parser_set_input_file(yaml_parser_t *parser, FILE *file);
-
-/**
- * Set a generic input handler.
- *
- * @param[in,out]   parser  A parser object.
- * @param[in]       handler A read handler.
- * @param[in]       data    Any application data for passing to the read
- *                          handler.
- */
-
-YAML_DECLARE(void)
-yaml_parser_set_input(yaml_parser_t *parser,
-        yaml_read_handler_t *handler, void *data);
-
-/**
- * Set the source encoding.
- *
- * @param[in,out]   parser      A parser object.
- * @param[in]       encoding    The source encoding.
- */
-
-YAML_DECLARE(void)
-yaml_parser_set_encoding(yaml_parser_t *parser, yaml_encoding_t encoding);
-
-/**
- * Scan the input stream and produce the next token.
- *
- * Call the function subsequently to produce a sequence of tokens corresponding
- * to the input stream.  The initial token has the type
- * @c YAML_STREAM_START_TOKEN while the ending token has the type
- * @c YAML_STREAM_END_TOKEN.
- *
- * An application is responsible for freeing any buffers associated with the
- * produced token object using the @c yaml_token_delete function.
- *
- * An application must not alternate the calls of yaml_parser_scan() with the
- * calls of yaml_parser_parse() or yaml_parser_load(). Doing this will break
- * the parser.
- *
- * @param[in,out]   parser      A parser object.
- * @param[out]      token       An empty token object.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_parser_scan(yaml_parser_t *parser, yaml_token_t *token);
-
-/**
- * Parse the input stream and produce the next parsing event.
- *
- * Call the function subsequently to produce a sequence of events corresponding
- * to the input stream.  The initial event has the type
- * @c YAML_STREAM_START_EVENT while the ending event has the type
- * @c YAML_STREAM_END_EVENT.
- *
- * An application is responsible for freeing any buffers associated with the
- * produced event object using the yaml_event_delete() function.
- *
- * An application must not alternate the calls of yaml_parser_parse() with the
- * calls of yaml_parser_scan() or yaml_parser_load(). Doing this will break the
- * parser.
- *
- * @param[in,out]   parser      A parser object.
- * @param[out]      event       An empty event object.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_parser_parse(yaml_parser_t *parser, yaml_event_t *event);
-
-/**
- * Parse the input stream and produce the next YAML document.
- *
- * Call this function subsequently to produce a sequence of documents
- * constituting the input stream.
- *
- * If the produced document has no root node, it means that the document
- * end has been reached.
- *
- * An application is responsible for freeing any data associated with the
- * produced document object using the yaml_document_delete() function.
- *
- * An application must not alternate the calls of yaml_parser_load() with the
- * calls of yaml_parser_scan() or yaml_parser_parse(). Doing this will break
- * the parser.
- *
- * @param[in,out]   parser      A parser object.
- * @param[out]      document    An empty document object.
- *
- * @return @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_parser_load(yaml_parser_t *parser, yaml_document_t *document);
-
-/** @} */
-
-/**
- * @defgroup emitter Emitter Definitions
- * @{
- */
-
-/**
- * The prototype of a write handler.
- *
- * The write handler is called when the emitter needs to flush the accumulated
- * characters to the output.  The handler should write @a size bytes of the
- * @a buffer to the output.
- *
- * @param[in,out]   data        A pointer to an application data specified by
- *                              yaml_emitter_set_output().
- * @param[in]       buffer      The buffer with bytes to be written.
- * @param[in]       size        The size of the buffer.
- *
- * @returns On success, the handler should return @c 1.  If the handler failed,
- * the returned value should be @c 0.
- */
-
-typedef int yaml_write_handler_t(void *data, unsigned char *buffer, size_t size);
-
-/** The emitter states. */
-typedef enum yaml_emitter_state_e {
-    /** Expect STREAM-START. */
-    YAML_EMIT_STREAM_START_STATE,
-    /** Expect the first DOCUMENT-START or STREAM-END. */
-    YAML_EMIT_FIRST_DOCUMENT_START_STATE,
-    /** Expect DOCUMENT-START or STREAM-END. */
-    YAML_EMIT_DOCUMENT_START_STATE,
-    /** Expect the content of a document. */
-    YAML_EMIT_DOCUMENT_CONTENT_STATE,
-    /** Expect DOCUMENT-END. */
-    YAML_EMIT_DOCUMENT_END_STATE,
-    /** Expect the first item of a flow sequence. */
-    YAML_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE,
-    /** Expect an item of a flow sequence. */
-    YAML_EMIT_FLOW_SEQUENCE_ITEM_STATE,
-    /** Expect the first key of a flow mapping. */
-    YAML_EMIT_FLOW_MAPPING_FIRST_KEY_STATE,
-    /** Expect a key of a flow mapping. */
-    YAML_EMIT_FLOW_MAPPING_KEY_STATE,
-    /** Expect a value for a simple key of a flow mapping. */
-    YAML_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE,
-    /** Expect a value of a flow mapping. */
-    YAML_EMIT_FLOW_MAPPING_VALUE_STATE,
-    /** Expect the first item of a block sequence. */
-    YAML_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE,
-    /** Expect an item of a block sequence. */
-    YAML_EMIT_BLOCK_SEQUENCE_ITEM_STATE,
-    /** Expect the first key of a block mapping. */
-    YAML_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE,
-    /** Expect the key of a block mapping. */
-    YAML_EMIT_BLOCK_MAPPING_KEY_STATE,
-    /** Expect a value for a simple key of a block mapping. */
-    YAML_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE,
-    /** Expect a value of a block mapping. */
-    YAML_EMIT_BLOCK_MAPPING_VALUE_STATE,
-    /** Expect nothing. */
-    YAML_EMIT_END_STATE
-} yaml_emitter_state_t;
-
-/**
- * The emitter structure.
- *
- * All members are internal.  Manage the structure using the @c yaml_emitter_
- * family of functions.
- */
-
-typedef struct yaml_emitter_s {
-
-    /**
-     * @name Error handling
-     * @{
-     */
-
-    /** Error type. */
-    yaml_error_type_t error;
-    /** Error description. */
-    const char *problem;
-
-    /**
-     * @}
-     */
-
-    /**
-     * @name Writer stuff
-     * @{
-     */
-
-    /** Write handler. */
-    yaml_write_handler_t *write_handler;
-
-    /** A pointer for passing to the white handler. */
-    void *write_handler_data;
-
-    /** Standard (string or file) output data. */
-    union {
-        /** String output data. */
-        struct {
-            /** The buffer pointer. */
-            unsigned char *buffer;
-            /** The buffer size. */
-            size_t size;
-            /** The number of written bytes. */
-            size_t *size_written;
-        } string;
-
-        /** File output data. */
-        FILE *file;
-    } output;
-
-    /** The working buffer. */
-    struct {
-        /** The beginning of the buffer. */
-        yaml_char_t *start;
-        /** The end of the buffer. */
-        yaml_char_t *end;
-        /** The current position of the buffer. */
-        yaml_char_t *pointer;
-        /** The last filled position of the buffer. */
-        yaml_char_t *last;
-    } buffer;
-
-    /** The raw buffer. */
-    struct {
-        /** The beginning of the buffer. */
-        unsigned char *start;
-        /** The end of the buffer. */
-        unsigned char *end;
-        /** The current position of the buffer. */
-        unsigned char *pointer;
-        /** The last filled position of the buffer. */
-        unsigned char *last;
-    } raw_buffer;
-
-    /** The stream encoding. */
-    yaml_encoding_t encoding;
-
-    /**
-     * @}
-     */
-
-    /**
-     * @name Emitter stuff
-     * @{
-     */
-
-    /** If the output is in the canonical style? */
-    int canonical;
-    /** The number of indentation spaces. */
-    int best_indent;
-    /** The preferred width of the output lines. */
-    int best_width;
-    /** Allow unescaped non-ASCII characters? */
-    int unicode;
-    /** The preferred line break. */
-    yaml_break_t line_break;
-
-    /** The stack of states. */
-    struct {
-        /** The beginning of the stack. */
-        yaml_emitter_state_t *start;
-        /** The end of the stack. */
-        yaml_emitter_state_t *end;
-        /** The top of the stack. */
-        yaml_emitter_state_t *top;
-    } states;
-
-    /** The current emitter state. */
-    yaml_emitter_state_t state;
-
-    /** The event queue. */
-    struct {
-        /** The beginning of the event queue. */
-        yaml_event_t *start;
-        /** The end of the event queue. */
-        yaml_event_t *end;
-        /** The head of the event queue. */
-        yaml_event_t *head;
-        /** The tail of the event queue. */
-        yaml_event_t *tail;
-    } events;
-
-    /** The stack of indentation levels. */
-    struct {
-        /** The beginning of the stack. */
-        int *start;
-        /** The end of the stack. */
-        int *end;
-        /** The top of the stack. */
-        int *top;
-    } indents;
-
-    /** The list of tag directives. */
-    struct {
-        /** The beginning of the list. */
-        yaml_tag_directive_t *start;
-        /** The end of the list. */
-        yaml_tag_directive_t *end;
-        /** The top of the list. */
-        yaml_tag_directive_t *top;
-    } tag_directives;
-
-    /** The current indentation level. */
-    int indent;
-
-    /** The current flow level. */
-    int flow_level;
-
-    /** Is it the document root context? */
-    int root_context;
-    /** Is it a sequence context? */
-    int sequence_context;
-    /** Is it a mapping context? */
-    int mapping_context;
-    /** Is it a simple mapping key context? */
-    int simple_key_context;
-
-    /** The current line. */
-    int line;
-    /** The current column. */
-    int column;
-    /** If the last character was a whitespace? */
-    int whitespace;
-    /** If the last character was an indentation character (' ', '-', '?', ':')? */
-    int indention;
-    /** If an explicit document end is required? */
-    int open_ended;
-
-    /** Anchor analysis. */
-    struct {
-        /** The anchor value. */
-        yaml_char_t *anchor;
-        /** The anchor length. */
-        size_t anchor_length;
-        /** Is it an alias? */
-        int alias;
-    } anchor_data;
-
-    /** Tag analysis. */
-    struct {
-        /** The tag handle. */
-        yaml_char_t *handle;
-        /** The tag handle length. */
-        size_t handle_length;
-        /** The tag suffix. */
-        yaml_char_t *suffix;
-        /** The tag suffix length. */
-        size_t suffix_length;
-    } tag_data;
-
-    /** Scalar analysis. */
-    struct {
-        /** The scalar value. */
-        yaml_char_t *value;
-        /** The scalar length. */
-        size_t length;
-        /** Does the scalar contain line breaks? */
-        int multiline;
-        /** Can the scalar be expessed in the flow plain style? */
-        int flow_plain_allowed;
-        /** Can the scalar be expressed in the block plain style? */
-        int block_plain_allowed;
-        /** Can the scalar be expressed in the single quoted style? */
-        int single_quoted_allowed;
-        /** Can the scalar be expressed in the literal or folded styles? */
-        int block_allowed;
-        /** The output style. */
-        yaml_scalar_style_t style;
-    } scalar_data;
-
-    /**
-     * @}
-     */
-
-    /**
-     * @name Dumper stuff
-     * @{
-     */
-
-    /** If the stream was already opened? */
-    int opened;
-    /** If the stream was already closed? */
-    int closed;
-
-    /** The information associated with the document nodes. */
-    struct {
-        /** The number of references. */
-        int references;
-        /** The anchor id. */
-        int anchor;
-        /** If the node has been emitted? */
-        int serialized;
-    } *anchors;
-
-    /** The last assigned anchor id. */
-    int last_anchor_id;
-
-    /** The currently emitted document. */
-    yaml_document_t *document;
-
-    /**
-     * @}
-     */
-
-} yaml_emitter_t;
-
-/**
- * Initialize an emitter.
- *
- * This function creates a new emitter object.  An application is responsible
- * for destroying the object using the yaml_emitter_delete() function.
- *
- * @param[out]      emitter     An empty parser object.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_emitter_initialize(yaml_emitter_t *emitter);
-
-/**
- * Destroy an emitter.
- *
- * @param[in,out]   emitter     An emitter object.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_delete(yaml_emitter_t *emitter);
-
-/**
- * Set a string output.
- *
- * The emitter will write the output characters to the @a output buffer of the
- * size @a size.  The emitter will set @a size_written to the number of written
- * bytes.  If the buffer is smaller than required, the emitter produces the
- * YAML_WRITE_ERROR error.
- *
- * @param[in,out]   emitter         An emitter object.
- * @param[in]       output          An output buffer.
- * @param[in]       size            The buffer size.
- * @param[in]       size_written    The pointer to save the number of written
- *                                  bytes.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_output_string(yaml_emitter_t *emitter,
-        unsigned char *output, size_t size, size_t *size_written);
-
-/**
- * Set a file output.
- *
- * @a file should be a file object open for writing.  The application is
- * responsible for closing the @a file.
- *
- * @param[in,out]   emitter     An emitter object.
- * @param[in]       file        An open file.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_output_file(yaml_emitter_t *emitter, FILE *file);
-
-/**
- * Set a generic output handler.
- *
- * @param[in,out]   emitter     An emitter object.
- * @param[in]       handler     A write handler.
- * @param[in]       data        Any application data for passing to the write
- *                              handler.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_output(yaml_emitter_t *emitter,
-        yaml_write_handler_t *handler, void *data);
-
-/**
- * Set the output encoding.
- *
- * @param[in,out]   emitter     An emitter object.
- * @param[in]       encoding    The output encoding.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_encoding(yaml_emitter_t *emitter, yaml_encoding_t encoding);
-
-/**
- * Set if the output should be in the "canonical" format as in the YAML
- * specification.
- *
- * @param[in,out]   emitter     An emitter object.
- * @param[in]       canonical   If the output is canonical.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_canonical(yaml_emitter_t *emitter, int canonical);
-
-/**
- * Set the intendation increment.
- *
- * @param[in,out]   emitter     An emitter object.
- * @param[in]       indent      The indentation increment (1 < . < 10).
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_indent(yaml_emitter_t *emitter, int indent);
-
-/**
- * Set the preferred line width. @c -1 means unlimited.
- *
- * @param[in,out]   emitter     An emitter object.
- * @param[in]       width       The preferred line width.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_width(yaml_emitter_t *emitter, int width);
-
-/**
- * Set if unescaped non-ASCII characters are allowed.
- *
- * @param[in,out]   emitter     An emitter object.
- * @param[in]       unicode     If unescaped Unicode characters are allowed.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_unicode(yaml_emitter_t *emitter, int unicode);
-
-/**
- * Set the preferred line break.
- *
- * @param[in,out]   emitter     An emitter object.
- * @param[in]       line_break  The preferred line break.
- */
-
-YAML_DECLARE(void)
-yaml_emitter_set_break(yaml_emitter_t *emitter, yaml_break_t line_break);
-
-/**
- * Emit an event.
- *
- * The event object may be generated using the yaml_parser_parse() function.
- * The emitter takes the responsibility for the event object and destroys its
- * content after it is emitted. The event object is destroyed even if the
- * function fails.
- *
- * @param[in,out]   emitter     An emitter object.
- * @param[in,out]   event       An event object.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_emitter_emit(yaml_emitter_t *emitter, yaml_event_t *event);
-
-/**
- * Start a YAML stream.
- *
- * This function should be used before yaml_emitter_dump() is called.
- *
- * @param[in,out]   emitter     An emitter object.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_emitter_open(yaml_emitter_t *emitter);
-
-/**
- * Finish a YAML stream.
- *
- * This function should be used after yaml_emitter_dump() is called.
- *
- * @param[in,out]   emitter     An emitter object.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_emitter_close(yaml_emitter_t *emitter);
-
-/**
- * Emit a YAML document.
- *
- * The documen object may be generated using the yaml_parser_load() function
- * or the yaml_document_initialize() function.  The emitter takes the
- * responsibility for the document object and destoys its content after
- * it is emitted. The document object is destroyedeven if the function fails.
- *
- * @param[in,out]   emitter     An emitter object.
- * @param[in,out]   document    A document object.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_emitter_dump(yaml_emitter_t *emitter, yaml_document_t *document);
-
-/**
- * Flush the accumulated characters to the output.
- *
- * @param[in,out]   emitter     An emitter object.
- *
- * @returns @c 1 if the function succeeded, @c 0 on error.
- */
-
-YAML_DECLARE(int)
-yaml_emitter_flush(yaml_emitter_t *emitter);
-
-/** @} */
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* #ifndef YAML_H */
-
diff --git a/yaml_private.h b/yaml_private.h
deleted file mode 100644
index ed5ea66..0000000
--- a/yaml_private.h
+++ /dev/null
@@ -1,640 +0,0 @@
-
-#if HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <yaml.h>
-
-#include <assert.h>
-#include <limits.h>
-
-/*
- * Memory management.
- */
-
-YAML_DECLARE(void *)
-yaml_malloc(size_t size);
-
-YAML_DECLARE(void *)
-yaml_realloc(void *ptr, size_t size);
-
-YAML_DECLARE(void)
-yaml_free(void *ptr);
-
-YAML_DECLARE(yaml_char_t *)
-yaml_strdup(const yaml_char_t *);
-
-/*
- * Reader: Ensure that the buffer contains at least `length` characters.
- */
-
-YAML_DECLARE(int)
-yaml_parser_update_buffer(yaml_parser_t *parser, size_t length);
-
-/*
- * Scanner: Ensure that the token stack contains at least one token ready.
- */
-
-YAML_DECLARE(int)
-yaml_parser_fetch_more_tokens(yaml_parser_t *parser);
-
-/*
- * The size of the input raw buffer.
- */
-
-#define INPUT_RAW_BUFFER_SIZE   16384
-
-/*
- * The size of the input buffer.
- *
- * It should be possible to decode the whole raw buffer.
- */
-
-#define INPUT_BUFFER_SIZE       (INPUT_RAW_BUFFER_SIZE*3)
-
-/*
- * The size of the output buffer.
- */
-
-#define OUTPUT_BUFFER_SIZE      16384
-
-/*
- * The size of the output raw buffer.
- *
- * It should be possible to encode the whole output buffer.
- */
-
-#define OUTPUT_RAW_BUFFER_SIZE  (OUTPUT_BUFFER_SIZE*2+2)
-
-/*
- * The size of other stacks and queues.
- */
-
-#define INITIAL_STACK_SIZE  16
-#define INITIAL_QUEUE_SIZE  16
-#define INITIAL_STRING_SIZE 16
-
-/*
- * Buffer management.
- */
-
-#define BUFFER_INIT(context,buffer,size)                                        \
-    (((buffer).start = yaml_malloc(size)) ?                                     \
-        ((buffer).last = (buffer).pointer = (buffer).start,                     \
-         (buffer).end = (buffer).start+(size),                                  \
-         1) :                                                                   \
-        ((context)->error = YAML_MEMORY_ERROR,                                  \
-         0))
-
-#define BUFFER_DEL(context,buffer)                                              \
-    (yaml_free((buffer).start),                                                 \
-     (buffer).start = (buffer).pointer = (buffer).end = 0)
-
-/*
- * String management.
- */
-
-typedef struct {
-    yaml_char_t *start;
-    yaml_char_t *end;
-    yaml_char_t *pointer;
-} yaml_string_t;
-
-YAML_DECLARE(int)
-yaml_string_extend(yaml_char_t **start,
-        yaml_char_t **pointer, yaml_char_t **end);
-
-YAML_DECLARE(int)
-yaml_string_join(
-        yaml_char_t **a_start, yaml_char_t **a_pointer, yaml_char_t **a_end,
-        yaml_char_t **b_start, yaml_char_t **b_pointer, yaml_char_t **b_end);
-
-#define NULL_STRING { NULL, NULL, NULL }
-
-#define STRING(string,length)   { (string), (string)+(length), (string) }
-
-#define STRING_ASSIGN(value,string,length)                                      \
-    ((value).start = (string),                                                  \
-     (value).end = (string)+(length),                                           \
-     (value).pointer = (string))
-
-#define STRING_INIT(context,string,size)                                        \
-    (((string).start = yaml_malloc(size)) ?                                     \
-        ((string).pointer = (string).start,                                     \
-         (string).end = (string).start+(size),                                  \
-         memset((string).start, 0, (size)),                                     \
-         1) :                                                                   \
-        ((context)->error = YAML_MEMORY_ERROR,                                  \
-         0))
-
-#define STRING_DEL(context,string)                                              \
-    (yaml_free((string).start),                                                 \
-     (string).start = (string).pointer = (string).end = 0)
-
-#define STRING_EXTEND(context,string)                                           \
-    (((string).pointer+5 < (string).end)                                        \
-        || yaml_string_extend(&(string).start,                                  \
-            &(string).pointer, &(string).end))
-
-#define CLEAR(context,string)                                                   \
-    ((string).pointer = (string).start,                                         \
-     memset((string).start, 0, (string).end-(string).start))
-
-#define JOIN(context,string_a,string_b)                                         \
-    ((yaml_string_join(&(string_a).start, &(string_a).pointer,                  \
-                       &(string_a).end, &(string_b).start,                      \
-                       &(string_b).pointer, &(string_b).end)) ?                 \
-        ((string_b).pointer = (string_b).start,                                 \
-         1) :                                                                   \
-        ((context)->error = YAML_MEMORY_ERROR,                                  \
-         0))
-
-/*
- * String check operations.
- */
-
-/*
- * Check the octet at the specified position.
- */
-
-#define CHECK_AT(string,octet,offset)                                           \
-    ((string).pointer[offset] == (yaml_char_t)(octet))
-
-/*
- * Check the current octet in the buffer.
- */
-
-#define CHECK(string,octet) CHECK_AT((string),(octet),0)
-
-/*
- * Check if the character at the specified position is an alphabetical
- * character, a digit, '_', or '-'.
- */
-
-#define IS_ALPHA_AT(string,offset)                                              \
-     (((string).pointer[offset] >= (yaml_char_t) '0' &&                         \
-       (string).pointer[offset] <= (yaml_char_t) '9') ||                        \
-      ((string).pointer[offset] >= (yaml_char_t) 'A' &&                         \
-       (string).pointer[offset] <= (yaml_char_t) 'Z') ||                        \
-      ((string).pointer[offset] >= (yaml_char_t) 'a' &&                         \
-       (string).pointer[offset] <= (yaml_char_t) 'z') ||                        \
-      (string).pointer[offset] == '_' ||                                        \
-      (string).pointer[offset] == '-')
-
-#define IS_ALPHA(string)    IS_ALPHA_AT((string),0)
-
-/*
- * Check if the character at the specified position is a digit.
- */
-
-#define IS_DIGIT_AT(string,offset)                                              \
-     (((string).pointer[offset] >= (yaml_char_t) '0' &&                         \
-       (string).pointer[offset] <= (yaml_char_t) '9'))
-
-#define IS_DIGIT(string)    IS_DIGIT_AT((string),0)
-
-/*
- * Get the value of a digit.
- */
-
-#define AS_DIGIT_AT(string,offset)                                              \
-     ((string).pointer[offset] - (yaml_char_t) '0')
-
-#define AS_DIGIT(string)    AS_DIGIT_AT((string),0)
-
-/*
- * Check if the character at the specified position is a hex-digit.
- */
-
-#define IS_HEX_AT(string,offset)                                                \
-     (((string).pointer[offset] >= (yaml_char_t) '0' &&                         \
-       (string).pointer[offset] <= (yaml_char_t) '9') ||                        \
-      ((string).pointer[offset] >= (yaml_char_t) 'A' &&                         \
-       (string).pointer[offset] <= (yaml_char_t) 'F') ||                        \
-      ((string).pointer[offset] >= (yaml_char_t) 'a' &&                         \
-       (string).pointer[offset] <= (yaml_char_t) 'f'))
-
-#define IS_HEX(string)    IS_HEX_AT((string),0)
-
-/*
- * Get the value of a hex-digit.
- */
-
-#define AS_HEX_AT(string,offset)                                                \
-      (((string).pointer[offset] >= (yaml_char_t) 'A' &&                        \
-        (string).pointer[offset] <= (yaml_char_t) 'F') ?                        \
-       ((string).pointer[offset] - (yaml_char_t) 'A' + 10) :                    \
-       ((string).pointer[offset] >= (yaml_char_t) 'a' &&                        \
-        (string).pointer[offset] <= (yaml_char_t) 'f') ?                        \
-       ((string).pointer[offset] - (yaml_char_t) 'a' + 10) :                    \
-       ((string).pointer[offset] - (yaml_char_t) '0'))
- 
-#define AS_HEX(string)  AS_HEX_AT((string),0)
- 
-/*
- * Check if the character is ASCII.
- */
-
-#define IS_ASCII_AT(string,offset)                                              \
-    ((string).pointer[offset] <= (yaml_char_t) '\x7F')
-
-#define IS_ASCII(string)    IS_ASCII_AT((string),0)
-
-/*
- * Check if the character can be printed unescaped.
- */
-
-#define IS_PRINTABLE_AT(string,offset)                                          \
-    (((string).pointer[offset] == 0x0A)         /* . == #x0A */                 \
-     || ((string).pointer[offset] >= 0x20       /* #x20 <= . <= #x7E */         \
-         && (string).pointer[offset] <= 0x7E)                                   \
-     || ((string).pointer[offset] == 0xC2       /* #0xA0 <= . <= #xD7FF */      \
-         && (string).pointer[offset+1] >= 0xA0)                                 \
-     || ((string).pointer[offset] > 0xC2                                        \
-         && (string).pointer[offset] < 0xED)                                    \
-     || ((string).pointer[offset] == 0xED                                       \
-         && (string).pointer[offset+1] < 0xA0)                                  \
-     || ((string).pointer[offset] == 0xEE)                                      \
-     || ((string).pointer[offset] == 0xEF      /* #xE000 <= . <= #xFFFD */      \
-         && !((string).pointer[offset+1] == 0xBB        /* && . != #xFEFF */    \
-             && (string).pointer[offset+2] == 0xBF)                             \
-         && !((string).pointer[offset+1] == 0xBF                                \
-             && ((string).pointer[offset+2] == 0xBE                             \
-                 || (string).pointer[offset+2] == 0xBF))))
-
-#define IS_PRINTABLE(string)    IS_PRINTABLE_AT((string),0)
-
-/*
- * Check if the character at the specified position is NUL.
- */
-
-#define IS_Z_AT(string,offset)    CHECK_AT((string),'\0',(offset))
-
-#define IS_Z(string)    IS_Z_AT((string),0)
-
-/*
- * Check if the character at the specified position is BOM.
- */
-
-#define IS_BOM_AT(string,offset)                                                \
-     (CHECK_AT((string),'\xEF',(offset))                                        \
-      && CHECK_AT((string),'\xBB',(offset)+1)                                   \
-      && CHECK_AT((string),'\xBF',(offset)+2))  /* BOM (#xFEFF) */
-
-#define IS_BOM(string)  IS_BOM_AT(string,0)
-
-/*
- * Check if the character at the specified position is space.
- */
-
-#define IS_SPACE_AT(string,offset)  CHECK_AT((string),' ',(offset))
-
-#define IS_SPACE(string)    IS_SPACE_AT((string),0)
-
-/*
- * Check if the character at the specified position is tab.
- */
-
-#define IS_TAB_AT(string,offset)    CHECK_AT((string),'\t',(offset))
-
-#define IS_TAB(string)  IS_TAB_AT((string),0)
-
-/*
- * Check if the character at the specified position is blank (space or tab).
- */
-
-#define IS_BLANK_AT(string,offset)                                              \
-    (IS_SPACE_AT((string),(offset)) || IS_TAB_AT((string),(offset)))
-
-#define IS_BLANK(string)    IS_BLANK_AT((string),0)
-
-/*
- * Check if the character at the specified position is a line break.
- */
-
-#define IS_BREAK_AT(string,offset)                                              \
-    (CHECK_AT((string),'\r',(offset))               /* CR (#xD)*/               \
-     || CHECK_AT((string),'\n',(offset))            /* LF (#xA) */              \
-     || (CHECK_AT((string),'\xC2',(offset))                                     \
-         && CHECK_AT((string),'\x85',(offset)+1))   /* NEL (#x85) */            \
-     || (CHECK_AT((string),'\xE2',(offset))                                     \
-         && CHECK_AT((string),'\x80',(offset)+1)                                \
-         && CHECK_AT((string),'\xA8',(offset)+2))   /* LS (#x2028) */           \
-     || (CHECK_AT((string),'\xE2',(offset))                                     \
-         && CHECK_AT((string),'\x80',(offset)+1)                                \
-         && CHECK_AT((string),'\xA9',(offset)+2)))  /* PS (#x2029) */
-
-#define IS_BREAK(string)    IS_BREAK_AT((string),0)
-
-#define IS_CRLF_AT(string,offset)                                               \
-     (CHECK_AT((string),'\r',(offset)) && CHECK_AT((string),'\n',(offset)+1))
-
-#define IS_CRLF(string) IS_CRLF_AT((string),0)
-
-/*
- * Check if the character is a line break or NUL.
- */
-
-#define IS_BREAKZ_AT(string,offset)                                             \
-    (IS_BREAK_AT((string),(offset)) || IS_Z_AT((string),(offset)))
-
-#define IS_BREAKZ(string)   IS_BREAKZ_AT((string),0)
-
-/*
- * Check if the character is a line break, space, or NUL.
- */
-
-#define IS_SPACEZ_AT(string,offset)                                             \
-    (IS_SPACE_AT((string),(offset)) || IS_BREAKZ_AT((string),(offset)))
-
-#define IS_SPACEZ(string)   IS_SPACEZ_AT((string),0)
-
-/*
- * Check if the character is a line break, space, tab, or NUL.
- */
-
-#define IS_BLANKZ_AT(string,offset)                                             \
-    (IS_BLANK_AT((string),(offset)) || IS_BREAKZ_AT((string),(offset)))
-
-#define IS_BLANKZ(string)   IS_BLANKZ_AT((string),0)
-
-/*
- * Determine the width of the character.
- */
-
-#define WIDTH_AT(string,offset)                                                 \
-     (((string).pointer[offset] & 0x80) == 0x00 ? 1 :                           \
-      ((string).pointer[offset] & 0xE0) == 0xC0 ? 2 :                           \
-      ((string).pointer[offset] & 0xF0) == 0xE0 ? 3 :                           \
-      ((string).pointer[offset] & 0xF8) == 0xF0 ? 4 : 0)
-
-#define WIDTH(string)   WIDTH_AT((string),0)
-
-/*
- * Move the string pointer to the next character.
- */
-
-#define MOVE(string)    ((string).pointer += WIDTH((string)))
-
-/*
- * Copy a character and move the pointers of both strings.
- */
-
-#define COPY(string_a,string_b)                                                 \
-    ((*(string_b).pointer & 0x80) == 0x00 ?                                     \
-     (*((string_a).pointer++) = *((string_b).pointer++)) :                      \
-     (*(string_b).pointer & 0xE0) == 0xC0 ?                                     \
-     (*((string_a).pointer++) = *((string_b).pointer++),                        \
-      *((string_a).pointer++) = *((string_b).pointer++)) :                      \
-     (*(string_b).pointer & 0xF0) == 0xE0 ?                                     \
-     (*((string_a).pointer++) = *((string_b).pointer++),                        \
-      *((string_a).pointer++) = *((string_b).pointer++),                        \
-      *((string_a).pointer++) = *((string_b).pointer++)) :                      \
-     (*(string_b).pointer & 0xF8) == 0xF0 ?                                     \
-     (*((string_a).pointer++) = *((string_b).pointer++),                        \
-      *((string_a).pointer++) = *((string_b).pointer++),                        \
-      *((string_a).pointer++) = *((string_b).pointer++),                        \
-      *((string_a).pointer++) = *((string_b).pointer++)) : 0)
-
-/*
- * Stack and queue management.
- */
-
-YAML_DECLARE(int)
-yaml_stack_extend(void **start, void **top, void **end);
-
-YAML_DECLARE(int)
-yaml_queue_extend(void **start, void **head, void **tail, void **end);
-
-#define STACK_INIT(context,stack,size)                                          \
-    (((stack).start = yaml_malloc((size)*sizeof(*(stack).start))) ?             \
-        ((stack).top = (stack).start,                                           \
-         (stack).end = (stack).start+(size),                                    \
-         1) :                                                                   \
-        ((context)->error = YAML_MEMORY_ERROR,                                  \
-         0))
-
-#define STACK_DEL(context,stack)                                                \
-    (yaml_free((stack).start),                                                  \
-     (stack).start = (stack).top = (stack).end = 0)
-
-#define STACK_EMPTY(context,stack)                                              \
-    ((stack).start == (stack).top)
-
-#define PUSH(context,stack,value)                                               \
-    (((stack).top != (stack).end                                                \
-      || yaml_stack_extend((void **)&(stack).start,                             \
-              (void **)&(stack).top, (void **)&(stack).end)) ?                  \
-        (*((stack).top++) = value,                                              \
-         1) :                                                                   \
-        ((context)->error = YAML_MEMORY_ERROR,                                  \
-         0))
-
-#define POP(context,stack)                                                      \
-    (*(--(stack).top))
-
-#define QUEUE_INIT(context,queue,size)                                          \
-    (((queue).start = yaml_malloc((size)*sizeof(*(queue).start))) ?             \
-        ((queue).head = (queue).tail = (queue).start,                           \
-         (queue).end = (queue).start+(size),                                    \
-         1) :                                                                   \
-        ((context)->error = YAML_MEMORY_ERROR,                                  \
-         0))
-
-#define QUEUE_DEL(context,queue)                                                \
-    (yaml_free((queue).start),                                                  \
-     (queue).start = (queue).head = (queue).tail = (queue).end = 0)
-
-#define QUEUE_EMPTY(context,queue)                                              \
-    ((queue).head == (queue).tail)
-
-#define ENQUEUE(context,queue,value)                                            \
-    (((queue).tail != (queue).end                                               \
-      || yaml_queue_extend((void **)&(queue).start, (void **)&(queue).head,     \
-            (void **)&(queue).tail, (void **)&(queue).end)) ?                   \
-        (*((queue).tail++) = value,                                             \
-         1) :                                                                   \
-        ((context)->error = YAML_MEMORY_ERROR,                                  \
-         0))
-
-#define DEQUEUE(context,queue)                                                  \
-    (*((queue).head++))
-
-#define QUEUE_INSERT(context,queue,index,value)                                 \
-    (((queue).tail != (queue).end                                               \
-      || yaml_queue_extend((void **)&(queue).start, (void **)&(queue).head,     \
-            (void **)&(queue).tail, (void **)&(queue).end)) ?                   \
-        (memmove((queue).head+(index)+1,(queue).head+(index),                   \
-            ((queue).tail-(queue).head-(index))*sizeof(*(queue).start)),        \
-         *((queue).head+(index)) = value,                                       \
-         (queue).tail++,                                                        \
-         1) :                                                                   \
-        ((context)->error = YAML_MEMORY_ERROR,                                  \
-         0))
-
-/*
- * Token initializers.
- */
-
-#define TOKEN_INIT(token,token_type,token_start_mark,token_end_mark)            \
-    (memset(&(token), 0, sizeof(yaml_token_t)),                                 \
-     (token).type = (token_type),                                               \
-     (token).start_mark = (token_start_mark),                                   \
-     (token).end_mark = (token_end_mark))
-
-#define STREAM_START_TOKEN_INIT(token,token_encoding,start_mark,end_mark)       \
-    (TOKEN_INIT((token),YAML_STREAM_START_TOKEN,(start_mark),(end_mark)),       \
-     (token).data.stream_start.encoding = (token_encoding))
-
-#define STREAM_END_TOKEN_INIT(token,start_mark,end_mark)                        \
-    (TOKEN_INIT((token),YAML_STREAM_END_TOKEN,(start_mark),(end_mark)))
-
-#define ALIAS_TOKEN_INIT(token,token_value,start_mark,end_mark)                 \
-    (TOKEN_INIT((token),YAML_ALIAS_TOKEN,(start_mark),(end_mark)),              \
-     (token).data.alias.value = (token_value))
-
-#define ANCHOR_TOKEN_INIT(token,token_value,start_mark,end_mark)                \
-    (TOKEN_INIT((token),YAML_ANCHOR_TOKEN,(start_mark),(end_mark)),             \
-     (token).data.anchor.value = (token_value))
-
-#define TAG_TOKEN_INIT(token,token_handle,token_suffix,start_mark,end_mark)     \
-    (TOKEN_INIT((token),YAML_TAG_TOKEN,(start_mark),(end_mark)),                \
-     (token).data.tag.handle = (token_handle),                                  \
-     (token).data.tag.suffix = (token_suffix))
-
-#define SCALAR_TOKEN_INIT(token,token_value,token_length,token_style,start_mark,end_mark)   \
-    (TOKEN_INIT((token),YAML_SCALAR_TOKEN,(start_mark),(end_mark)),             \
-     (token).data.scalar.value = (token_value),                                 \
-     (token).data.scalar.length = (token_length),                               \
-     (token).data.scalar.style = (token_style))
-
-#define VERSION_DIRECTIVE_TOKEN_INIT(token,token_major,token_minor,start_mark,end_mark)     \
-    (TOKEN_INIT((token),YAML_VERSION_DIRECTIVE_TOKEN,(start_mark),(end_mark)),  \
-     (token).data.version_directive.major = (token_major),                      \
-     (token).data.version_directive.minor = (token_minor))
-
-#define TAG_DIRECTIVE_TOKEN_INIT(token,token_handle,token_prefix,start_mark,end_mark)       \
-    (TOKEN_INIT((token),YAML_TAG_DIRECTIVE_TOKEN,(start_mark),(end_mark)),      \
-     (token).data.tag_directive.handle = (token_handle),                        \
-     (token).data.tag_directive.prefix = (token_prefix))
-
-/*
- * Event initializers.
- */
-
-#define EVENT_INIT(event,event_type,event_start_mark,event_end_mark)            \
-    (memset(&(event), 0, sizeof(yaml_event_t)),                                 \
-     (event).type = (event_type),                                               \
-     (event).start_mark = (event_start_mark),                                   \
-     (event).end_mark = (event_end_mark))
-
-#define STREAM_START_EVENT_INIT(event,event_encoding,start_mark,end_mark)       \
-    (EVENT_INIT((event),YAML_STREAM_START_EVENT,(start_mark),(end_mark)),       \
-     (event).data.stream_start.encoding = (event_encoding))
-
-#define STREAM_END_EVENT_INIT(event,start_mark,end_mark)                        \
-    (EVENT_INIT((event),YAML_STREAM_END_EVENT,(start_mark),(end_mark)))
-
-#define DOCUMENT_START_EVENT_INIT(event,event_version_directive,                \
-        event_tag_directives_start,event_tag_directives_end,event_implicit,start_mark,end_mark) \
-    (EVENT_INIT((event),YAML_DOCUMENT_START_EVENT,(start_mark),(end_mark)),     \
-     (event).data.document_start.version_directive = (event_version_directive), \
-     (event).data.document_start.tag_directives.start = (event_tag_directives_start),   \
-     (event).data.document_start.tag_directives.end = (event_tag_directives_end),   \
-     (event).data.document_start.implicit = (event_implicit))
-
-#define DOCUMENT_END_EVENT_INIT(event,event_implicit,start_mark,end_mark)       \
-    (EVENT_INIT((event),YAML_DOCUMENT_END_EVENT,(start_mark),(end_mark)),       \
-     (event).data.document_end.implicit = (event_implicit))
-
-#define ALIAS_EVENT_INIT(event,event_anchor,start_mark,end_mark)                \
-    (EVENT_INIT((event),YAML_ALIAS_EVENT,(start_mark),(end_mark)),              \
-     (event).data.alias.anchor = (event_anchor))
-
-#define SCALAR_EVENT_INIT(event,event_anchor,event_tag,event_value,event_length,    \
-        event_plain_implicit, event_quoted_implicit,event_style,start_mark,end_mark)    \
-    (EVENT_INIT((event),YAML_SCALAR_EVENT,(start_mark),(end_mark)),             \
-     (event).data.scalar.anchor = (event_anchor),                               \
-     (event).data.scalar.tag = (event_tag),                                     \
-     (event).data.scalar.value = (event_value),                                 \
-     (event).data.scalar.length = (event_length),                               \
-     (event).data.scalar.plain_implicit = (event_plain_implicit),               \
-     (event).data.scalar.quoted_implicit = (event_quoted_implicit),             \
-     (event).data.scalar.style = (event_style))
-
-#define SEQUENCE_START_EVENT_INIT(event,event_anchor,event_tag,                 \
-        event_implicit,event_style,start_mark,end_mark)                         \
-    (EVENT_INIT((event),YAML_SEQUENCE_START_EVENT,(start_mark),(end_mark)),     \
-     (event).data.sequence_start.anchor = (event_anchor),                       \
-     (event).data.sequence_start.tag = (event_tag),                             \
-     (event).data.sequence_start.implicit = (event_implicit),                   \
-     (event).data.sequence_start.style = (event_style))
-
-#define SEQUENCE_END_EVENT_INIT(event,start_mark,end_mark)                      \
-    (EVENT_INIT((event),YAML_SEQUENCE_END_EVENT,(start_mark),(end_mark)))
-
-#define MAPPING_START_EVENT_INIT(event,event_anchor,event_tag,                  \
-        event_implicit,event_style,start_mark,end_mark)                         \
-    (EVENT_INIT((event),YAML_MAPPING_START_EVENT,(start_mark),(end_mark)),      \
-     (event).data.mapping_start.anchor = (event_anchor),                        \
-     (event).data.mapping_start.tag = (event_tag),                              \
-     (event).data.mapping_start.implicit = (event_implicit),                    \
-     (event).data.mapping_start.style = (event_style))
-
-#define MAPPING_END_EVENT_INIT(event,start_mark,end_mark)                       \
-    (EVENT_INIT((event),YAML_MAPPING_END_EVENT,(start_mark),(end_mark)))
-
-/*
- * Document initializer.
- */
-
-#define DOCUMENT_INIT(document,document_nodes_start,document_nodes_end,         \
-        document_version_directive,document_tag_directives_start,               \
-        document_tag_directives_end,document_start_implicit,                    \
-        document_end_implicit,document_start_mark,document_end_mark)            \
-    (memset(&(document), 0, sizeof(yaml_document_t)),                           \
-     (document).nodes.start = (document_nodes_start),                           \
-     (document).nodes.end = (document_nodes_end),                               \
-     (document).nodes.top = (document_nodes_start),                             \
-     (document).version_directive = (document_version_directive),               \
-     (document).tag_directives.start = (document_tag_directives_start),         \
-     (document).tag_directives.end = (document_tag_directives_end),             \
-     (document).start_implicit = (document_start_implicit),                     \
-     (document).end_implicit = (document_end_implicit),                         \
-     (document).start_mark = (document_start_mark),                             \
-     (document).end_mark = (document_end_mark))
-
-/*
- * Node initializers.
- */
-
-#define NODE_INIT(node,node_type,node_tag,node_start_mark,node_end_mark)        \
-    (memset(&(node), 0, sizeof(yaml_node_t)),                                   \
-     (node).type = (node_type),                                                 \
-     (node).tag = (node_tag),                                                   \
-     (node).start_mark = (node_start_mark),                                     \
-     (node).end_mark = (node_end_mark))
-
-#define SCALAR_NODE_INIT(node,node_tag,node_value,node_length,                  \
-        node_style,start_mark,end_mark)                                         \
-    (NODE_INIT((node),YAML_SCALAR_NODE,(node_tag),(start_mark),(end_mark)),     \
-     (node).data.scalar.value = (node_value),                                   \
-     (node).data.scalar.length = (node_length),                                 \
-     (node).data.scalar.style = (node_style))
-
-#define SEQUENCE_NODE_INIT(node,node_tag,node_items_start,node_items_end,       \
-        node_style,start_mark,end_mark)                                         \
-    (NODE_INIT((node),YAML_SEQUENCE_NODE,(node_tag),(start_mark),(end_mark)),   \
-     (node).data.sequence.items.start = (node_items_start),                     \
-     (node).data.sequence.items.end = (node_items_end),                         \
-     (node).data.sequence.items.top = (node_items_start),                       \
-     (node).data.sequence.style = (node_style))
-
-#define MAPPING_NODE_INIT(node,node_tag,node_pairs_start,node_pairs_end,        \
-        node_style,start_mark,end_mark)                                         \
-    (NODE_INIT((node),YAML_MAPPING_NODE,(node_tag),(start_mark),(end_mark)),    \
-     (node).data.mapping.pairs.start = (node_pairs_start),                      \
-     (node).data.mapping.pairs.end = (node_pairs_end),                          \
-     (node).data.mapping.pairs.top = (node_pairs_start),                        \
-     (node).data.mapping.style = (node_style))
-
diff --git a/yamlh.go b/yamlh.go
new file mode 100644
index 0000000..7733b86
--- /dev/null
+++ b/yamlh.go
@@ -0,0 +1,712 @@
+package goyaml
+
+import (
+	"io"
+)
+
+// The version directive data.
+type yaml_version_directive_t struct {
+	major int8 // The major version number.
+	minor int8 // The minor version number.
+}
+
+// The tag directive data.
+type yaml_tag_directive_t struct {
+	handle []byte // The tag handle.
+	prefix []byte // The tag prefix.
+}
+
+type yaml_encoding_t int
+
+// The stream encoding.
+const (
+	// Let the parser choose the encoding.
+	yaml_ANY_ENCODING yaml_encoding_t = iota
+
+	yaml_UTF8_ENCODING    // The default UTF-8 encoding.
+	yaml_UTF16LE_ENCODING // The UTF-16-LE encoding with BOM.
+	yaml_UTF16BE_ENCODING // The UTF-16-BE encoding with BOM.
+)
+
+type yaml_break_t int
+
+// Line break types.
+const (
+	// Let the parser choose the break type.
+	yaml_ANY_BREAK yaml_break_t = iota
+
+	yaml_CR_BREAK   // Use CR for line breaks (Mac style).
+	yaml_LN_BREAK   // Use LN for line breaks (Unix style).
+	yaml_CRLN_BREAK // Use CR LN for line breaks (DOS style).
+)
+
+type yaml_error_type_t int
+
+// Many bad things could happen with the parser and emitter.
+const (
+	// No error is produced.
+	yaml_NO_ERROR yaml_error_type_t = iota
+
+	yaml_MEMORY_ERROR   // Cannot allocate or reallocate a block of memory.
+	yaml_READER_ERROR   // Cannot read or decode the input stream.
+	yaml_SCANNER_ERROR  // Cannot scan the input stream.
+	yaml_PARSER_ERROR   // Cannot parse the input stream.
+	yaml_COMPOSER_ERROR // Cannot compose a YAML document.
+	yaml_WRITER_ERROR   // Cannot write to the output stream.
+	yaml_EMITTER_ERROR  // Cannot emit a YAML stream.
+)
+
+// The pointer position.
+type yaml_mark_t struct {
+	index  int // The position index.
+	line   int // The position line.
+	column int // The position column.
+}
+
+// Node Styles
+
+type yaml_style_t int8
+
+type yaml_scalar_style_t yaml_style_t
+
+// Scalar styles.
+const (
+	// Let the emitter choose the style.
+	yaml_ANY_SCALAR_STYLE yaml_scalar_style_t = iota
+
+	yaml_PLAIN_SCALAR_STYLE         // The plain scalar style.
+	yaml_SINGLE_QUOTED_SCALAR_STYLE // The single-quoted scalar style.
+	yaml_DOUBLE_QUOTED_SCALAR_STYLE // The double-quoted scalar style.
+	yaml_LITERAL_SCALAR_STYLE       // The literal scalar style.
+	yaml_FOLDED_SCALAR_STYLE        // The folded scalar style.
+)
+
+type yaml_sequence_style_t yaml_style_t
+
+// Sequence styles.
+const (
+	// Let the emitter choose the style.
+	yaml_ANY_SEQUENCE_STYLE yaml_sequence_style_t = iota
+
+	yaml_BLOCK_SEQUENCE_STYLE // The block sequence style.
+	yaml_FLOW_SEQUENCE_STYLE  // The flow sequence style.
+)
+
+type yaml_mapping_style_t yaml_style_t
+
+// Mapping styles.
+const (
+	// Let the emitter choose the style.
+	YAML_ANY_MAPPING_STYLE yaml_mapping_style_t = iota
+
+	yaml_BLOCK_MAPPING_STYLE // The block mapping style.
+	yaml_FLOW_MAPPING_STYLE  // The flow mapping style.
+)
+
+// Tokens
+
+type yaml_token_type_t int
+
+// Token types.
+const (
+	// An empty token.
+	yaml_NO_TOKEN yaml_token_type_t = iota
+
+	yaml_STREAM_START_TOKEN // A STREAM-START token.
+	yaml_STREAM_END_TOKEN   // A STREAM-END token.
+
+	yaml_VERSION_DIRECTIVE_TOKEN // A VERSION-DIRECTIVE token.
+	yaml_TAG_DIRECTIVE_TOKEN     // A TAG-DIRECTIVE token.
+	yaml_DOCUMENT_START_TOKEN    // A DOCUMENT-START token.
+	yaml_DOCUMENT_END_TOKEN      // A DOCUMENT-END token.
+
+	yaml_BLOCK_SEQUENCE_START_TOKEN // A BLOCK-SEQUENCE-START token.
+	yaml_BLOCK_MAPPING_START_TOKEN  // A BLOCK-SEQUENCE-END token.
+	yaml_BLOCK_END_TOKEN            // A BLOCK-END token.
+
+	yaml_FLOW_SEQUENCE_START_TOKEN // A FLOW-SEQUENCE-START token.
+	yaml_FLOW_SEQUENCE_END_TOKEN   // A FLOW-SEQUENCE-END token.
+	yaml_FLOW_MAPPING_START_TOKEN  // A FLOW-MAPPING-START token.
+	yaml_FLOW_MAPPING_END_TOKEN    // A FLOW-MAPPING-END token.
+
+	yaml_BLOCK_ENTRY_TOKEN // A BLOCK-ENTRY token.
+	yaml_FLOW_ENTRY_TOKEN  // A FLOW-ENTRY token.
+	yaml_KEY_TOKEN         // A KEY token.
+	yaml_VALUE_TOKEN       // A VALUE token.
+
+	yaml_ALIAS_TOKEN  // An ALIAS token.
+	yaml_ANCHOR_TOKEN // An ANCHOR token.
+	yaml_TAG_TOKEN    // A TAG token.
+	yaml_SCALAR_TOKEN // A SCALAR token.
+)
+
+func (tt yaml_token_type_t) String() string {
+	switch tt {
+	case yaml_NO_TOKEN:
+		return "yaml_NO_TOKEN"
+	case yaml_STREAM_START_TOKEN:
+		return "yaml_STREAM_START_TOKEN"
+	case yaml_STREAM_END_TOKEN:
+		return "yaml_STREAM_END_TOKEN"
+	case yaml_VERSION_DIRECTIVE_TOKEN:
+		return "yaml_VERSION_DIRECTIVE_TOKEN"
+	case yaml_TAG_DIRECTIVE_TOKEN:
+		return "yaml_TAG_DIRECTIVE_TOKEN"
+	case yaml_DOCUMENT_START_TOKEN:
+		return "yaml_DOCUMENT_START_TOKEN"
+	case yaml_DOCUMENT_END_TOKEN:
+		return "yaml_DOCUMENT_END_TOKEN"
+	case yaml_BLOCK_SEQUENCE_START_TOKEN:
+		return "yaml_BLOCK_SEQUENCE_START_TOKEN"
+	case yaml_BLOCK_MAPPING_START_TOKEN:
+		return "yaml_BLOCK_MAPPING_START_TOKEN"
+	case yaml_BLOCK_END_TOKEN:
+		return "yaml_BLOCK_END_TOKEN"
+	case yaml_FLOW_SEQUENCE_START_TOKEN:
+		return "yaml_FLOW_SEQUENCE_START_TOKEN"
+	case yaml_FLOW_SEQUENCE_END_TOKEN:
+		return "yaml_FLOW_SEQUENCE_END_TOKEN"
+	case yaml_FLOW_MAPPING_START_TOKEN:
+		return "yaml_FLOW_MAPPING_START_TOKEN"
+	case yaml_FLOW_MAPPING_END_TOKEN:
+		return "yaml_FLOW_MAPPING_END_TOKEN"
+	case yaml_BLOCK_ENTRY_TOKEN:
+		return "yaml_BLOCK_ENTRY_TOKEN"
+	case yaml_FLOW_ENTRY_TOKEN:
+		return "yaml_FLOW_ENTRY_TOKEN"
+	case yaml_KEY_TOKEN:
+		return "yaml_KEY_TOKEN"
+	case yaml_VALUE_TOKEN:
+		return "yaml_VALUE_TOKEN"
+	case yaml_ALIAS_TOKEN:
+		return "yaml_ALIAS_TOKEN"
+	case yaml_ANCHOR_TOKEN:
+		return "yaml_ANCHOR_TOKEN"
+	case yaml_TAG_TOKEN:
+		return "yaml_TAG_TOKEN"
+	case yaml_SCALAR_TOKEN:
+		return "yaml_SCALAR_TOKEN"
+	}
+	return "<unknown token>"
+}
+
+// The token structure.
+type yaml_token_t struct {
+	// The token type.
+	typ yaml_token_type_t
+
+	// The start/end of the token.
+	start_mark, end_mark yaml_mark_t
+
+	// The stream encoding (for yaml_STREAM_START_TOKEN).
+	encoding yaml_encoding_t
+
+	// The alias/anchor/scalar value or tag/tag directive handle
+	// (for yaml_ALIAS_TOKEN, yaml_ANCHOR_TOKEN, yaml_SCALAR_TOKEN, yaml_TAG_TOKEN, yaml_TAG_DIRECTIVE_TOKEN).
+	value []byte
+
+	// The tag suffix (for yaml_TAG_TOKEN).
+	suffix []byte
+
+	// The tag directive prefix (for yaml_TAG_DIRECTIVE_TOKEN).
+	prefix []byte
+
+	// The scalar style (for yaml_SCALAR_TOKEN).
+	style yaml_scalar_style_t
+
+	// The version directive major/minor (for yaml_VERSION_DIRECTIVE_TOKEN).
+	major, minor int8
+}
+
+// Events
+
+type yaml_event_type_t int8
+
+// Event types.
+const (
+	// An empty event.
+	yaml_NO_EVENT yaml_event_type_t = iota
+
+	yaml_STREAM_START_EVENT   // A STREAM-START event.
+	yaml_STREAM_END_EVENT     // A STREAM-END event.
+	yaml_DOCUMENT_START_EVENT // A DOCUMENT-START event.
+	yaml_DOCUMENT_END_EVENT   // A DOCUMENT-END event.
+	yaml_ALIAS_EVENT          // An ALIAS event.
+	yaml_SCALAR_EVENT         // A SCALAR event.
+	yaml_SEQUENCE_START_EVENT // A SEQUENCE-START event.
+	yaml_SEQUENCE_END_EVENT   // A SEQUENCE-END event.
+	yaml_MAPPING_START_EVENT  // A MAPPING-START event.
+	yaml_MAPPING_END_EVENT    // A MAPPING-END event.
+)
+
+// The event structure.
+type yaml_event_t struct {
+
+	// The event type.
+	typ yaml_event_type_t
+
+	// The start and end of the event.
+	start_mark, end_mark yaml_mark_t
+
+	// The document encoding (for yaml_STREAM_START_EVENT).
+	encoding yaml_encoding_t
+
+	// The version directive (for yaml_DOCUMENT_START_EVENT).
+	version_directive *yaml_version_directive_t
+
+	// The list of tag directives (for yaml_DOCUMENT_START_EVENT).
+	tag_directives []yaml_tag_directive_t
+
+	// The anchor (for yaml_SCALAR_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT, yaml_ALIAS_EVENT).
+	anchor []byte
+
+	// The tag (for yaml_SCALAR_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT).
+	tag []byte
+
+	// The scalar value (for yaml_SCALAR_EVENT).
+	value []byte
+
+	// Is the document start/end indicator implicit, or the tag optional?
+	// (for yaml_DOCUMENT_START_EVENT, yaml_DOCUMENT_END_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT, yaml_SCALAR_EVENT).
+	implicit bool
+
+	// Is the tag optional for any non-plain style? (for yaml_SCALAR_EVENT).
+	quoted_implicit bool
+
+	// The style (for yaml_SCALAR_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT).
+	style yaml_style_t
+}
+
+func (e *yaml_event_t) scalar_style() yaml_scalar_style_t     { return yaml_scalar_style_t(e.style) }
+func (e *yaml_event_t) sequence_style() yaml_sequence_style_t { return yaml_sequence_style_t(e.style) }
+func (e *yaml_event_t) mapping_style() yaml_mapping_style_t   { return yaml_mapping_style_t(e.style) }
+
+// Nodes
+
+const (
+	yaml_NULL_TAG      = "tag:yaml.org,2002:null"      // The tag !!null with the only possible value: null.
+	yaml_BOOL_TAG      = "tag:yaml.org,2002:bool"      // The tag !!bool with the values: true and false.
+	yaml_STR_TAG       = "tag:yaml.org,2002:str"       // The tag !!str for string values.
+	yaml_INT_TAG       = "tag:yaml.org,2002:int"       // The tag !!int for integer values.
+	yaml_FLOAT_TAG     = "tag:yaml.org,2002:float"     // The tag !!float for float values.
+	yaml_TIMESTAMP_TAG = "tag:yaml.org,2002:timestamp" // The tag !!timestamp for date and time values.
+
+	yaml_SEQ_TAG = "tag:yaml.org,2002:seq" // The tag !!seq is used to denote sequences.
+	yaml_MAP_TAG = "tag:yaml.org,2002:map" // The tag !!map is used to denote mapping.
+
+	yaml_DEFAULT_SCALAR_TAG   = yaml_STR_TAG // The default scalar tag is !!str.
+	yaml_DEFAULT_SEQUENCE_TAG = yaml_SEQ_TAG // The default sequence tag is !!seq.
+	yaml_DEFAULT_MAPPING_TAG  = yaml_MAP_TAG // The default mapping tag is !!map.
+)
+
+type yaml_node_type_t int
+
+// Node types.
+const (
+	// An empty node.
+	yaml_NO_NODE yaml_node_type_t = iota
+
+	yaml_SCALAR_NODE   // A scalar node.
+	yaml_SEQUENCE_NODE // A sequence node.
+	yaml_MAPPING_NODE  // A mapping node.
+)
+
+// An element of a sequence node.
+type yaml_node_item_t int
+
+// An element of a mapping node.
+type yaml_node_pair_t struct {
+	key   int // The key of the element.
+	value int // The value of the element.
+}
+
+// The node structure.
+type yaml_node_t struct {
+	typ yaml_node_type_t // The node type.
+	tag []byte           // The node tag.
+
+	// The node data.
+
+	// The scalar parameters (for yaml_SCALAR_NODE).
+	scalar struct {
+		value  []byte              // The scalar value.
+		length int                 // The length of the scalar value.
+		style  yaml_scalar_style_t // The scalar style.
+	}
+
+	// The sequence parameters (for YAML_SEQUENCE_NODE).
+	sequence struct {
+		items_data []yaml_node_item_t    // The stack of sequence items.
+		style      yaml_sequence_style_t // The sequence style.
+	}
+
+	// The mapping parameters (for yaml_MAPPING_NODE).
+	mapping struct {
+		pairs_data  []yaml_node_pair_t   // The stack of mapping pairs (key, value).
+		pairs_start *yaml_node_pair_t    // The beginning of the stack.
+		pairs_end   *yaml_node_pair_t    // The end of the stack.
+		pairs_top   *yaml_node_pair_t    // The top of the stack.
+		style       yaml_mapping_style_t // The mapping style.
+	}
+
+	start_mark yaml_mark_t // The beginning of the node.
+	end_mark   yaml_mark_t // The end of the node.
+
+}
+
+// The document structure.
+type yaml_document_t struct {
+
+	// The document nodes.
+	nodes []yaml_node_t
+
+	// The version directive.
+	version_directive *yaml_version_directive_t
+
+	// The list of tag directives.
+	tag_directives_data  []yaml_tag_directive_t
+	tag_directives_start int // The beginning of the tag directives list.
+	tag_directives_end   int // The end of the tag directives list.
+
+	start_implicit int // Is the document start indicator implicit?
+	end_implicit   int // Is the document end indicator implicit?
+
+	// The start/end of the document.
+	start_mark, end_mark yaml_mark_t
+}
+
+// The prototype of a read handler.
+//
+// The read handler is called when the parser needs to read more bytes from the
+// source. The handler should write not more than size bytes to the buffer.
+// The number of written bytes should be set to the size_read variable.
+//
+// [in,out]   data        A pointer to an application data specified by
+//                        yaml_parser_set_input().
+// [out]      buffer      The buffer to write the data from the source.
+// [in]       size        The size of the buffer.
+// [out]      size_read   The actual number of bytes read from the source.
+//
+// On success, the handler should return 1.  If the handler failed,
+// the returned value should be 0. On EOF, the handler should set the
+// size_read to 0 and return 1.
+type yaml_read_handler_t func(parser *yaml_parser_t, buffer []byte) (n int, err error)
+
+// This structure holds information about a potential simple key.
+type yaml_simple_key_t struct {
+	possible     bool        // Is a simple key possible?
+	required     bool        // Is a simple key required?
+	token_number int         // The number of the token.
+	mark         yaml_mark_t // The position mark.
+}
+
+// The states of the parser.
+type yaml_parser_state_t int
+
+const (
+	yaml_PARSE_STREAM_START_STATE yaml_parser_state_t = iota
+
+	yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE           // Expect the beginning of an implicit document.
+	yaml_PARSE_DOCUMENT_START_STATE                    // Expect DOCUMENT-START.
+	yaml_PARSE_DOCUMENT_CONTENT_STATE                  // Expect the content of a document.
+	yaml_PARSE_DOCUMENT_END_STATE                      // Expect DOCUMENT-END.
+	yaml_PARSE_BLOCK_NODE_STATE                        // Expect a block node.
+	yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE // Expect a block node or indentless sequence.
+	yaml_PARSE_FLOW_NODE_STATE                         // Expect a flow node.
+	yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE        // Expect the first entry of a block sequence.
+	yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE              // Expect an entry of a block sequence.
+	yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE         // Expect an entry of an indentless sequence.
+	yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE           // Expect the first key of a block mapping.
+	yaml_PARSE_BLOCK_MAPPING_KEY_STATE                 // Expect a block mapping key.
+	yaml_PARSE_BLOCK_MAPPING_VALUE_STATE               // Expect a block mapping value.
+	yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE         // Expect the first entry of a flow sequence.
+	yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE               // Expect an entry of a flow sequence.
+	yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE   // Expect a key of an ordered mapping.
+	yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE // Expect a value of an ordered mapping.
+	yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE   // Expect the and of an ordered mapping entry.
+	yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE            // Expect the first key of a flow mapping.
+	yaml_PARSE_FLOW_MAPPING_KEY_STATE                  // Expect a key of a flow mapping.
+	yaml_PARSE_FLOW_MAPPING_VALUE_STATE                // Expect a value of a flow mapping.
+	yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE          // Expect an empty value of a flow mapping.
+	yaml_PARSE_END_STATE                               // Expect nothing.
+)
+
+func (ps yaml_parser_state_t) String() string {
+	switch ps {
+	case yaml_PARSE_STREAM_START_STATE:
+		return "yaml_PARSE_STREAM_START_STATE"
+	case yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE:
+		return "yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE"
+	case yaml_PARSE_DOCUMENT_START_STATE:
+		return "yaml_PARSE_DOCUMENT_START_STATE"
+	case yaml_PARSE_DOCUMENT_CONTENT_STATE:
+		return "yaml_PARSE_DOCUMENT_CONTENT_STATE"
+	case yaml_PARSE_DOCUMENT_END_STATE:
+		return "yaml_PARSE_DOCUMENT_END_STATE"
+	case yaml_PARSE_BLOCK_NODE_STATE:
+		return "yaml_PARSE_BLOCK_NODE_STATE"
+	case yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE:
+		return "yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE"
+	case yaml_PARSE_FLOW_NODE_STATE:
+		return "yaml_PARSE_FLOW_NODE_STATE"
+	case yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE:
+		return "yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE"
+	case yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE:
+		return "yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE"
+	case yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE:
+		return "yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE"
+	case yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE:
+		return "yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE"
+	case yaml_PARSE_BLOCK_MAPPING_KEY_STATE:
+		return "yaml_PARSE_BLOCK_MAPPING_KEY_STATE"
+	case yaml_PARSE_BLOCK_MAPPING_VALUE_STATE:
+		return "yaml_PARSE_BLOCK_MAPPING_VALUE_STATE"
+	case yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE:
+		return "yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE"
+	case yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE:
+		return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE"
+	case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE:
+		return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE"
+	case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE:
+		return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE"
+	case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE:
+		return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE"
+	case yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE:
+		return "yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE"
+	case yaml_PARSE_FLOW_MAPPING_KEY_STATE:
+		return "yaml_PARSE_FLOW_MAPPING_KEY_STATE"
+	case yaml_PARSE_FLOW_MAPPING_VALUE_STATE:
+		return "yaml_PARSE_FLOW_MAPPING_VALUE_STATE"
+	case yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE:
+		return "yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE"
+	case yaml_PARSE_END_STATE:
+		return "yaml_PARSE_END_STATE"
+	}
+	return "<unknown parser state>"
+}
+
+// This structure holds aliases data.
+type yaml_alias_data_t struct {
+	anchor []byte      // The anchor.
+	index  int         // The node id.
+	mark   yaml_mark_t // The anchor mark.
+}
+
+// The parser structure.
+//
+// All members are internal. Manage the structure using the
+// yaml_parser_ family of functions.
+type yaml_parser_t struct {
+
+	// Error handling
+
+	error yaml_error_type_t // Error type.
+
+	problem string // Error description.
+
+	// The byte about which the problem occured.
+	problem_offset int
+	problem_value  int
+	problem_mark   yaml_mark_t
+
+	// The error context.
+	context      string
+	context_mark yaml_mark_t
+
+	// Reader stuff
+
+	read_handler yaml_read_handler_t // Read handler.
+
+	input_file io.Reader // File input data.
+	input      []byte    // String input data.
+	input_pos  int
+
+	eof bool // EOF flag
+
+	buffer     []byte // The working buffer.
+	buffer_pos int    // The current position of the buffer.
+
+	unread int // The number of unread characters in the buffer.
+
+	raw_buffer     []byte // The raw buffer.
+	raw_buffer_pos int    // The current position of the buffer.
+
+	encoding yaml_encoding_t // The input encoding.
+
+	offset int         // The offset of the current position (in bytes).
+	mark   yaml_mark_t // The mark of the current position.
+
+	// Scanner stuff
+
+	stream_start_produced bool // Have we started to scan the input stream?
+	stream_end_produced   bool // Have we reached the end of the input stream?
+
+	flow_level int // The number of unclosed '[' and '{' indicators.
+
+	tokens          []yaml_token_t // The tokens queue.
+	tokens_head     int            // The head of the tokens queue.
+	tokens_parsed   int            // The number of tokens fetched from the queue.
+	token_available bool           // Does the tokens queue contain a token ready for dequeueing.
+
+	indent  int   // The current indentation level.
+	indents []int // The indentation levels stack.
+
+	simple_key_allowed bool                // May a simple key occur at the current position?
+	simple_keys        []yaml_simple_key_t // The stack of simple keys.
+
+	// Parser stuff
+
+	state          yaml_parser_state_t    // The current parser state.
+	states         []yaml_parser_state_t  // The parser states stack.
+	marks          []yaml_mark_t          // The stack of marks.
+	tag_directives []yaml_tag_directive_t // The list of TAG directives.
+
+	// Dumper stuff
+
+	aliases []yaml_alias_data_t // The alias data.
+
+	document *yaml_document_t // The currently parsed document.
+}
+
+// Emitter Definitions
+
+// The prototype of a write handler.
+//
+// The write handler is called when the emitter needs to flush the accumulated
+// characters to the output.  The handler should write @a size bytes of the
+// @a buffer to the output.
+//
+// @param[in,out]   data        A pointer to an application data specified by
+//                              yaml_emitter_set_output().
+// @param[in]       buffer      The buffer with bytes to be written.
+// @param[in]       size        The size of the buffer.
+//
+// @returns On success, the handler should return @c 1.  If the handler failed,
+// the returned value should be @c 0.
+//
+type yaml_write_handler_t func(emitter *yaml_emitter_t, buffer []byte) error
+
+type yaml_emitter_state_t int
+
+// The emitter states.
+const (
+	// Expect STREAM-START.
+	yaml_EMIT_STREAM_START_STATE yaml_emitter_state_t = iota
+
+	yaml_EMIT_FIRST_DOCUMENT_START_STATE       // Expect the first DOCUMENT-START or STREAM-END.
+	yaml_EMIT_DOCUMENT_START_STATE             // Expect DOCUMENT-START or STREAM-END.
+	yaml_EMIT_DOCUMENT_CONTENT_STATE           // Expect the content of a document.
+	yaml_EMIT_DOCUMENT_END_STATE               // Expect DOCUMENT-END.
+	yaml_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE   // Expect the first item of a flow sequence.
+	yaml_EMIT_FLOW_SEQUENCE_ITEM_STATE         // Expect an item of a flow sequence.
+	yaml_EMIT_FLOW_MAPPING_FIRST_KEY_STATE     // Expect the first key of a flow mapping.
+	yaml_EMIT_FLOW_MAPPING_KEY_STATE           // Expect a key of a flow mapping.
+	yaml_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE  // Expect a value for a simple key of a flow mapping.
+	yaml_EMIT_FLOW_MAPPING_VALUE_STATE         // Expect a value of a flow mapping.
+	yaml_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE  // Expect the first item of a block sequence.
+	yaml_EMIT_BLOCK_SEQUENCE_ITEM_STATE        // Expect an item of a block sequence.
+	yaml_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE    // Expect the first key of a block mapping.
+	yaml_EMIT_BLOCK_MAPPING_KEY_STATE          // Expect the key of a block mapping.
+	yaml_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE // Expect a value for a simple key of a block mapping.
+	yaml_EMIT_BLOCK_MAPPING_VALUE_STATE        // Expect a value of a block mapping.
+	yaml_EMIT_END_STATE                        // Expect nothing.
+)
+
+// The emitter structure.
+//
+// All members are internal.  Manage the structure using the @c yaml_emitter_
+// family of functions.
+type yaml_emitter_t struct {
+
+	// Error handling
+
+	error   yaml_error_type_t // Error type.
+	problem string            // Error description.
+
+	// Writer stuff
+
+	write_handler yaml_write_handler_t // Write handler.
+
+	output_buffer *[]byte   // String output data.
+	output_file   io.Writer // File output data.
+
+	buffer     []byte // The working buffer.
+	buffer_pos int    // The current position of the buffer.
+
+	raw_buffer     []byte // The raw buffer.
+	raw_buffer_pos int    // The current position of the buffer.
+
+	encoding yaml_encoding_t // The stream encoding.
+
+	// Emitter stuff
+
+	canonical   bool         // If the output is in the canonical style?
+	best_indent int          // The number of indentation spaces.
+	best_width  int          // The preferred width of the output lines.
+	unicode     bool         // Allow unescaped non-ASCII characters?
+	line_break  yaml_break_t // The preferred line break.
+
+	state  yaml_emitter_state_t   // The current emitter state.
+	states []yaml_emitter_state_t // The stack of states.
+
+	events      []yaml_event_t // The event queue.
+	events_head int            // The head of the event queue.
+
+	indents []int // The stack of indentation levels.
+
+	tag_directives []yaml_tag_directive_t // The list of tag directives.
+
+	indent int // The current indentation level.
+
+	flow_level int // The current flow level.
+
+	root_context       bool // Is it the document root context?
+	sequence_context   bool // Is it a sequence context?
+	mapping_context    bool // Is it a mapping context?
+	simple_key_context bool // Is it a simple mapping key context?
+
+	line       int  // The current line.
+	column     int  // The current column.
+	whitespace bool // If the last character was a whitespace?
+	indention  bool // If the last character was an indentation character (' ', '-', '?', ':')?
+	open_ended bool // If an explicit document end is required?
+
+	// Anchor analysis.
+	anchor_data struct {
+		anchor []byte // The anchor value.
+		alias  bool   // Is it an alias?
+	}
+
+	// Tag analysis.
+	tag_data struct {
+		handle []byte // The tag handle.
+		suffix []byte // The tag suffix.
+	}
+
+	// Scalar analysis.
+	scalar_data struct {
+		value                 []byte              // The scalar value.
+		multiline             bool                // Does the scalar contain line breaks?
+		flow_plain_allowed    bool                // Can the scalar be expessed in the flow plain style?
+		block_plain_allowed   bool                // Can the scalar be expressed in the block plain style?
+		single_quoted_allowed bool                // Can the scalar be expressed in the single quoted style?
+		block_allowed         bool                // Can the scalar be expressed in the literal or folded styles?
+		style                 yaml_scalar_style_t // The output style.
+	}
+
+	// Dumper stuff
+
+	opened bool // If the stream was already opened?
+	closed bool // If the stream was already closed?
+
+	// The information associated with the document nodes.
+	anchors *struct {
+		references int  // The number of references.
+		anchor     int  // The anchor id.
+		serialized bool // If the node has been emitted?
+	}
+
+	last_anchor_id int // The last assigned anchor id.
+
+	document *yaml_document_t // The currently emitted document.
+}
diff --git a/yamlprivateh.go b/yamlprivateh.go
new file mode 100644
index 0000000..fd8414b
--- /dev/null
+++ b/yamlprivateh.go
@@ -0,0 +1,173 @@
+package goyaml
+
+const (
+	// The size of the input raw buffer.
+	input_raw_buffer_size = 512
+
+	// The size of the input buffer.
+	// It should be possible to decode the whole raw buffer.
+	input_buffer_size = input_raw_buffer_size * 3
+
+	// The size of the output buffer.
+	output_buffer_size = 128
+
+	// The size of the output raw buffer.
+	// It should be possible to encode the whole output buffer.
+	output_raw_buffer_size = (output_buffer_size*2 + 2)
+
+	// The size of other stacks and queues.
+	initial_stack_size  = 16
+	initial_queue_size  = 16
+	initial_string_size = 16
+)
+
+// Check if the character at the specified position is an alphabetical
+// character, a digit, '_', or '-'.
+func is_alpha(b []byte, i int) bool {
+	return b[i] >= '0' && b[i] <= '9' || b[i] >= 'A' && b[i] <= 'Z' || b[i] >= 'a' && b[i] <= 'z' || b[i] == '_' || b[i] == '-'
+}
+
+// Check if the character at the specified position is a digit.
+func is_digit(b []byte, i int) bool {
+	return b[i] >= '0' && b[i] <= '9'
+}
+
+// Get the value of a digit.
+func as_digit(b []byte, i int) int {
+	return int(b[i]) - '0'
+}
+
+// Check if the character at the specified position is a hex-digit.
+func is_hex(b []byte, i int) bool {
+	return b[i] >= '0' && b[i] <= '9' || b[i] >= 'A' && b[i] <= 'F' || b[i] >= 'a' && b[i] <= 'f'
+}
+
+// Get the value of a hex-digit.
+func as_hex(b []byte, i int) int {
+	bi := b[i]
+	if bi >= 'A' && bi <= 'F' {
+		return int(bi) - 'A' + 10
+	}
+	if bi >= 'a' && bi <= 'f' {
+		return int(bi) - 'a' + 10
+	}
+	return int(bi) - '0'
+}
+
+// Check if the character is ASCII.
+func is_ascii(b []byte, i int) bool {
+	return b[i] <= 0x7F
+}
+
+// Check if the character at the start of the buffer can be printed unescaped.
+func is_printable(b []byte, i int) bool {
+	return ((b[i] == 0x0A) || // . == #x0A
+		(b[i] >= 0x20 && b[i] <= 0x7E) || // #x20 <= . <= #x7E
+		(b[i] == 0xC2 && b[i+1] >= 0xA0) || // #0xA0 <= . <= #xD7FF
+		(b[i] > 0xC2 && b[i] < 0xED) ||
+		(b[i] == 0xED && b[i+1] < 0xA0) ||
+		(b[i] == 0xEE) ||
+		(b[i] == 0xEF && // #xE000 <= . <= #xFFFD
+			!(b[i+1] == 0xBB && b[i+2] == 0xBF) && // && . != #xFEFF
+			!(b[i+1] == 0xBF && (b[i+2] == 0xBE || b[i+2] == 0xBF))))
+}
+
+// Check if the character at the specified position is NUL.
+func is_z(b []byte, i int) bool {
+	return b[i] == 0x00
+}
+
+// Check if the beginning of the buffer is a BOM.
+func is_bom(b []byte, i int) bool {
+	return b[0] == 0xEF && b[1] == 0xBB && b[2] == 0xBF
+}
+
+// Check if the character at the specified position is space.
+func is_space(b []byte, i int) bool {
+	return b[i] == ' '
+}
+
+// Check if the character at the specified position is tab.
+func is_tab(b []byte, i int) bool {
+	return b[i] == '\t'
+}
+
+// Check if the character at the specified position is blank (space or tab).
+func is_blank(b []byte, i int) bool {
+	//return is_space(b, i) || is_tab(b, i)
+	return b[i] == ' ' || b[i] == '\t'
+}
+
+// Check if the character at the specified position is a line break.
+func is_break(b []byte, i int) bool {
+	return (b[i] == '\r' || // CR (#xD)
+		b[i] == '\n' || // LF (#xA)
+		b[i] == 0xC2 && b[i+1] == 0x85 || // NEL (#x85)
+		b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA8 || // LS (#x2028)
+		b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA9) // PS (#x2029)
+}
+
+func is_crlf(b []byte, i int) bool {
+	return b[i] == '\r' && b[i+1] == '\n'
+}
+
+// Check if the character is a line break or NUL.
+func is_breakz(b []byte, i int) bool {
+	//return is_break(b, i) || is_z(b, i)
+	return (// is_break:
+		b[i] == '\r' || // CR (#xD)
+		b[i] == '\n' || // LF (#xA)
+		b[i] == 0xC2 && b[i+1] == 0x85 || // NEL (#x85)
+		b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA8 || // LS (#x2028)
+		b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA9 || // PS (#x2029)
+		// is_z:
+		b[i] == 0)
+}
+
+// Check if the character is a line break, space, or NUL.
+func is_spacez(b []byte, i int) bool {
+	//return is_space(b, i) || is_breakz(b, i)
+	return (// is_space:
+		b[i] == ' ' ||
+		// is_breakz:
+		b[i] == '\r' || // CR (#xD)
+		b[i] == '\n' || // LF (#xA)
+		b[i] == 0xC2 && b[i+1] == 0x85 || // NEL (#x85)
+		b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA8 || // LS (#x2028)
+		b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA9 || // PS (#x2029)
+		b[i] == 0)
+}
+
+// Check if the character is a line break, space, tab, or NUL.
+func is_blankz(b []byte, i int) bool {
+	//return is_blank(b, i) || is_breakz(b, i)
+	return (// is_blank:
+		b[i] == ' ' || b[i] == '\t' ||
+		// is_breakz:
+		b[i] == '\r' || // CR (#xD)
+		b[i] == '\n' || // LF (#xA)
+		b[i] == 0xC2 && b[i+1] == 0x85 || // NEL (#x85)
+		b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA8 || // LS (#x2028)
+		b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA9 || // PS (#x2029)
+		b[i] == 0)
+}
+
+// Determine the width of the character.
+func width(b byte) int {
+	// Don't replace these by a switch without first
+	// confirming that it is being inlined.
+	if b&0x80 == 0x00 {
+		return 1
+	}
+	if b&0xE0 == 0xC0 {
+		return 2
+	}
+	if b&0xF0 == 0xE0 {
+		return 3
+	}
+	if b&0xF8 == 0xF0 {
+		return 4
+	}
+	return 0
+
+}