[antlr-interest] v2->v3 Skip chars in Lexer?

[Bart Kiers]

On Sat, Apr 16, 2011 at 12:06 PM, Ruslan Zasukhin <
ruslan_zasukhin at valentina-db.com> wrote:

> ...
>
> How to remove that quotes in v3?  :-)
>
>
Here's a way:

DELIMITED
  @init {
    String q = null;
  }
  @after {
    String text = getText();
    // remove the first and last quote, replace all 2 quotes with a single
quote
    setText(text.substring(1, text.length()-1).replace(q+q, q));
  }
  :  ( DQUOTE (~DQUOTE | DQUOTE DQUOTE)+ DQUOTE {q = $DQUOTE.text;}
     | BQUOTE (~BQUOTE | BQUOTE BQUOTE)+ BQUOTE {q = $BQUOTE.text;}
     ) { $type = IDENT; }
  ;


or create your own token that handles the replacements internally:
http://www.antlr.org/wiki/pages/viewpage.action?pageId=1844

Regards,

Bart.