function parse( source ) {
	var result;

	text = source;
	at = 0;
	ch = ' ';
	result = value();
	white();
	if ( ch ) {
		error( 'Syntax error' );
	}
	return result;
}
Parses a return annotation value to a JavaScript object.

@param {string} source - return annotation value
@returns {*} parsed value