diff options
Diffstat (limited to 'ruby_2_2/ext/psych/yaml/loader.c')
| -rw-r--r-- | ruby_2_2/ext/psych/yaml/loader.c | 444 |
1 files changed, 0 insertions, 444 deletions
diff --git a/ruby_2_2/ext/psych/yaml/loader.c b/ruby_2_2/ext/psych/yaml/loader.c deleted file mode 100644 index 3ba99f087e..0000000000 --- a/ruby_2_2/ext/psych/yaml/loader.c +++ /dev/null @@ -1,444 +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 occurrence", - alias_data->mark, "second occurrence", 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 (!STACK_LIMIT(parser, parser->document->nodes, INT_MAX-1)) goto error; - - 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 (!STACK_LIMIT(parser, parser->document->nodes, INT_MAX-1)) goto error; - - 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) { - if (!STACK_LIMIT(parser, - parser->document->nodes.start[index-1].data.sequence.items, - INT_MAX-1)) return 0; - 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 (!STACK_LIMIT(parser, parser->document->nodes, INT_MAX-1)) goto error; - - 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) { - if (!STACK_LIMIT(parser, - parser->document->nodes.start[index-1].data.mapping.pairs, - INT_MAX-1)) return 0; - 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; -} - |