ANTLR - Handle whitespace in identifier

[Yogesh Shetty]

I am trying to build my custom search language and one of requirement is support for whitespace in identifier. 

For simplicity sake, i am sharing sample code and not the entire grammar 

Here are my sample search text 

LOB WHERE 

Line of Business WHERE 

Line of     Business WHERE 

As you can see in above search, first few words reflect search keyword followed by WHERE condition, i want to capture search keyword that can include whitespace. Sharing following sample grammar but doesn't seems to parse properly

sqlsyntax : identifierws 'WHERE';  

identifierws :  (WSID)+;

WSID: [a-zA-Z0-9 ] ;      // match identifiers with space

WS : [ \t\r\n]+ -> skip ; // skip spaces, tabs, newlines

Any help in this regard is appreciated.

This is what is happening when I try to parse Line of Business WHERE using above grammar rule. 

I get following error line 

1:0 no viable alternative at input 'Line' 

I get back LineofBusiness text but whitespace got trimmed, i want exact text Line of         Business, that is where I am struggling a bit.

Thanks in advance for your help

[Jim Idle]

Do t Zillow white space in identifiers. 

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