[antlr-interest] How to have strings enclosed in " and/or "

[matthew ford]

Hi all,
I am having trouble in the lexer handling strings that start and end with "
or "
(might start with " and end with ")
Some html editors kindly replace " with " when you load the file.

I would like to be able to handle something like
 "str is ""here""""
to return
 str is "here"
 due to the (STRING_PART)*  below and dropping the final quote of each
STRING_PART
"" inside a string just escapes a single "

Any ideas on how to make this work?
I don't want to pre-filter " to " as I assume the user is happy with
what the editor has done.

The following pseudo code does not work
matthew

QUOTE
 :  '&' 'q' 'u' 'o' 't' ';'
;

STRING
  : STRING_PART  (STRING_PART)*
 {  // remove leading quote here and just return string
 }
 ;

STRING_PART
 : ('"' |  QUOTE)
   (
   options {    generateAmbigWarnings=false;   }
  : '\r' '\n'  {newline();}
  | '\r'   {newline();}
  | '\n'   {newline();}
  | ~('"' | QUOTE |'\n'|'\r')
  )*
 ('"'! | QUOTE!)
 ;




 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/antlr-interest/

<*> To unsubscribe from this group, send an email to:
    antlr-interest-unsubscribe at yahoogroups.com

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/