All tests pass.
diff --git a/api_c.go b/api_c.go
index 3212d0b..46a303d 100644
--- a/api_c.go
+++ b/api_c.go
@@ -68,6 +68,7 @@
//}
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) {
@@ -76,12 +77,12 @@
parser.tokens = parser.tokens[:len(parser.tokens)-parser.tokens_head]
parser.tokens_head = 0
}
- parser.tokens = append(parser.tokens, yaml_token_t{})
+ 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[pos] = *token
+ parser.tokens[parser.tokens_head+pos] = *token
}
// Create a new parser object.
diff --git a/decode_test.go b/decode_test.go
index 83532f4..b341848 100644
--- a/decode_test.go
+++ b/decode_test.go
@@ -67,13 +67,28 @@
{"~: null key", map[interface{}]string{nil: "null key"}},
{"empty:", map[string]*bool{"empty": nil}},
- // Sequence
+ // 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,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"}}},
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/parser_c.go b/parser_c.go
index c965594..da0c19f 100644
--- a/parser_c.go
+++ b/parser_c.go
@@ -91,6 +91,8 @@
// 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)
@@ -195,6 +197,7 @@
// 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
@@ -212,10 +215,10 @@
}
if implicit && token.typ != yaml_VERSION_DIRECTIVE_TOKEN &&
- // Parse an implicit document.
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
}
@@ -356,10 +359,13 @@
// 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]
@@ -431,7 +437,7 @@
} 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([]byte(nil), parser.tag_directives[i].prefix...)
tag = append(tag, tag_suffix...)
break
}
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/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/scanner_c.go b/scanner_c.go
index e926272..9eeeffe 100644
--- a/scanner_c.go
+++ b/scanner_c.go
@@ -2,6 +2,7 @@
import (
"bytes"
+ "fmt"
)
// Introduction
@@ -533,7 +534,7 @@
parser.buffer_pos += 2
parser.mark.index++
parser.unread--
- case buf[pos] == '\r' || buf[pos+1] == '\n':
+ case buf[pos] == '\r' || buf[pos] == '\n':
// CR|LF . LF
*s = append(*s, '\n')
parser.buffer_pos += 1
@@ -546,7 +547,7 @@
*s = append(*s, buf[parser.buffer_pos:pos+3]...)
parser.buffer_pos += 3
default:
- return false
+ return true
}
parser.mark.index++
parser.mark.column = 0
@@ -602,6 +603,13 @@
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 {
@@ -619,7 +627,8 @@
return false
}
- for _, simple_key := range parser.simple_keys {
+ 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
@@ -643,7 +652,6 @@
// The dispatcher for token fetchers.
func yaml_parser_fetch_next_token(parser *yaml_parser_t) bool {
-
// Ensure that the buffer is initialized.
if !cache(parser, 1) {
return false
@@ -819,7 +827,8 @@
// 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 _, simple_key := range parser.simple_keys {
+ for i := range parser.simple_keys {
+ simple_key := &parser.simple_keys[i]
// The specification requires that a simple key
//
@@ -965,6 +974,7 @@
// 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
@@ -990,6 +1000,7 @@
// 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
@@ -2177,7 +2188,7 @@
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 && leading_break[0] == '\n' {
+ 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, ' ')
@@ -2255,7 +2266,7 @@
if !cache(parser, 1) {
return false
}
- for *indent == 0 || parser.mark.column < *indent && is_space(parser.buffer, parser.buffer_pos) {
+ for (*indent == 0 || parser.mark.column < *indent) && is_space(parser.buffer, parser.buffer_pos) {
skip(parser)
if !cache(parser, 1) {
return false
@@ -2569,6 +2580,7 @@
// 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
diff --git a/yaml_h.go b/yaml_h.go
index ad23067..0c1df00 100644
--- a/yaml_h.go
+++ b/yaml_h.go
@@ -138,6 +138,56 @@
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 {
@@ -553,157 +603,6 @@
}
-///**
-// * 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);
-//
-
-// Parser Definitions
-
// The prototype of a read handler.
//
// The read handler is called when the parser needs to read more bytes from the
@@ -760,6 +659,60 @@
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.
@@ -843,157 +796,6 @@
document *yaml_document_t // The currently parsed document.
}
-//
-///**
-// * 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,
-// unsigned char *input, int 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
-// * yaml_STREAM_START_TOKEN while the ending token has the type
-// * 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
-// * yaml_STREAM_START_EVENT while the ending event has the type
-// * 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
// * @{
