nl_tokens: Parse base items
pl_tokens: function ( ) { var astNode = "" ; // If this is a word/string, return its value if ( this . currentToken . type == 'word' || this . currentToken . type == 'string' ) { astNode = this . currentToken . <mask> ; this . readNextToken ( ) ; } // If this is a group, skip brackets and parse the inside else if ( this . currentToken . type == 'group' ) { this . readNextToken ( ) ; astNode = this . parseExpressionsRecursively ( ) ; this . readNextToken ( ) ; } return astNode ; }