Function yaml_document_add_mapping

xs/tools/yaml/api.c:1314–1353

 */

YAML_DECLARE(int)
yaml_document_add_mapping(yaml_document_t *document,
        yaml_char_t *tag, yaml_mapping_style_t style)
{
    struct {
        yaml_error_type_t error;
    } context;
    yaml_mark_t mark = { 0, 0, 0 };
    yaml_char_t *tag_copy = NULL;
    struct {
        yaml_node_pair_t *start;
        yaml_node_pair_t *end;
        yaml_node_pair_t *top;
    } pairs = { NULL, NULL, NULL };
    yaml_node_t node;

    assert(document);   /* Non-NULL document object is expected. */

    if (!tag) {
        tag = (yaml_char_t *)YAML_DEFAULT_MAPPING_TAG;
    }

    if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;
    tag_copy = yaml_strdup(tag);
    if (!tag_copy) goto error;

    if (!STACK_INIT(&context, pairs, INITIAL_STACK_SIZE)) goto error;

    MAPPING_NODE_INIT(node, tag_copy, pairs.start, pairs.end,
            style, mark, mark);
    if (!PUSH(&context, document->nodes, node)) goto error;

    return (int)(document->nodes.top - document->nodes.start);

error:
    STACK_DEL(&context, pairs);
    yaml_free(tag_copy);

    return 0;
}

/*
 * Append an item to a sequence node.