ReservedWord:    
                       Keyword |
                       FutureReservedWord
    
Keyword:               
                       'break'    | 'else'       | 'new'  

FutureReservedWord: 
                       'abstract' | 'enum'       | 'int'      
                       'short'    | 'interface'  | 'static' 

Identifier:            IdentifierName

IdentifierName:        /[\$_a-zA-Z][\$_a-zA-Z0-9]*/