Function yaml_parser_fetch_next_token

scannerc.go:687–881

The dispatcher for token fetchers.

(parser *yaml_parser_t)

// The dispatcher for token fetchers.
func yaml_parser_fetch_next_token(parser *yaml_parser_t) (ok bool) {
	// Ensure that the buffer is initialized.
	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
		return false
	}

	// Check if we just started scanning.  Fetch STREAM-START then.
	if !parser.stream_start_produced {
		return yaml_parser_fetch_stream_start(parser)
	}

	scan_mark := parser.mark

	// Eat whitespaces and comments until we reach the next token.
	if !yaml_parser_scan_to_next_token(parser) {
		return false
	}

	// [Go] While unrolling indents, transform the head comments of prior
	// indentation levels observed after scan_start into foot comments at
	// the respective indexes.

	// Check the indentation level against the current column.
	if !yaml_parser_unroll_indent(parser, parser.mark.column, scan_mark) {
		return false
	}

	// Ensure that the buffer contains at least 4 characters.  4 is the length
	// of the longest indicators ('--- ' and '... ').
	if parser.unread < 4 && !yaml_parser_update_buffer(parser, 4) {
		return false
	}

	// Is it the end of the stream?
	if is_z(parser.buffer, parser.buffer_pos) {
		return yaml_parser_fetch_stream_end(parser)
	}

	// Is it a directive?
	if parser.mark.column == 0 && parser.buffer[parser.buffer_pos] == '%' {
		return yaml_parser_fetch_directive(parser)
	}

	buf := parser.buffer
	pos := parser.buffer_pos

	// Is it the document start indicator?
	if parser.mark.column == 0 && buf[pos] == '-' && buf[pos+1] == '-' && buf[pos+2] == '-' && is_blankz(buf, pos+3) {
		return yaml_parser_fetch_document_indicator(parser, yaml_DOCUMENT_START_TOKEN)
	}

	// Is it the document end indicator?
	if parser.mark.column == 0 && buf[pos] == '.' && buf[pos+1] == '.' && buf[pos+2] == '.' && is_blankz(buf, pos+3) {
		return yaml_parser_fetch_document_indicator(parser, yaml_DOCUMENT_END_TOKEN)
	}

	comment_mark := parser.mark
	if len(parser.tokens) > 0 && (parser.flow_level == 0 && buf[pos] == ':' || parser.flow_level > 0 && buf[pos] == ',') {