Function yaml_parser_process_directives

parserc.go:1176–1235

Parse directives.

(parser *yaml_parser_t,
	version_directive_ref **yaml_version_directive_t,
	tag_directives_ref *[]yaml_tag_directive_t)

// Parse directives.
func yaml_parser_process_directives(parser *yaml_parser_t,
	version_directive_ref **yaml_version_directive_t,
	tag_directives_ref *[]yaml_tag_directive_t) bool {

	var version_directive *yaml_version_directive_t
	var tag_directives []yaml_tag_directive_t

	token := peek_token(parser)
	if token == nil {
		return false
	}

	for token.typ == yaml_VERSION_DIRECTIVE_TOKEN || token.typ == yaml_TAG_DIRECTIVE_TOKEN {
		if token.typ == yaml_VERSION_DIRECTIVE_TOKEN {
			if version_directive != nil {
				yaml_parser_set_parser_error(parser,
					"found duplicate %YAML directive", token.start_mark)
				return false
			}
			if token.major != 1 || token.minor != 1 {
				yaml_parser_set_parser_error(parser,
					"found incompatible YAML document", token.start_mark)
				return false
			}
			version_directive = &yaml_version_directive_t{
				major: token.major,
				minor: token.minor,
			}
		} else if token.typ == yaml_TAG_DIRECTIVE_TOKEN {
			value := yaml_tag_directive_t{
				handle: token.value,
				prefix: token.prefix,
			}
			if !yaml_parser_append_tag_directive(parser, value, false, token.start_mark) {
				return false
			}
			tag_directives = append(tag_directives, value)
		}

		skip_token(parser)
		token = peek_token(parser)
		if token == nil {
			return false
		}
	}

	for i := range default_tag_directives {
		if !yaml_parser_append_tag_directive(parser, default_tag_directives[i], true, token.start_mark) {
			return false
		}
	}

	if version_directive_ref != nil {
		*version_directive_ref = version_directive
	}
	if tag_directives_ref != nil {
		*tag_directives_ref = tag_directives
	}