Merged pure go port.
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
+
+}
