[antlr-interest] (newbie) Unsolved lexer problem

[ali azimi]

Hi,
   
  Thank you so much for any help you might give me. I have a long grammar and tree walker which work fine. However I have some problems at lexer level which I have not managed to solve for ages.
   
  The grammar at the bottom of this page, is a small part of the grammar which I have written. When debugging:
   
  1) If I give a pair of digit in the form of (x,y), I receive a mismatched error. So I need to remove Decimaldigit from Alphanumeric ( which I don’t want to). If I remove it, and  give the input (x,y) where x or y or both of them are a single digit, It gives me mismatched error. 
   
  2) Rule textinTextSymbol give me mismatched error with any text at any time.
   
  Could you please help me?
   
  1) I need my grammar to match (x,y) where x and y are integers which start from 0.
  2)I need my grammar to match texts.
  3)I need my grammar to match names.
   
  I appreciate so much.
   
  Best regards,
   
  Al
   
   
   
  grammar Crazy;
   
  textInTextSymbol:Text ;
   
  name    :NAME;
   
  b26      :'('INT ',' INT ')';
   
  Decimaldigit:'0'..'9';
   
  INT      :Decimaldigit+;
   
  NAME: Word ( '_' Word )*;
   
  fragment Special      :('+'|'-'|'!'|'>'|';'|'('|')'|'<'|'='|':'|'?'|'&'|'%'|'.'|'_'|',')+; 
   
  fragment Word:  '.'* AlphaNumeric+ '.'* ;
   
  Text     :(AlphaNumeric|Special|'.'|'_'|Space|'\'')*;          
   
  fragment Space :' ';
   
  fragment AlphaNumeric :(Uppercase|National|Lowercase|Decimaldigit);
   
  fragment National     :'#'|'@'|'"'|'$'|'['|']'|'{'|'}'|'^'|'~' ;
   
  fragment CharacterString :'\'' ( options{greedy=false;}: (~('\''|'\r'|'\n')| '\'' '\''))* '\'';
                   
  fragment Lowercase       :'a'..'z' ;
   
  fragment Uppercase       :'A'..'Z' ;
   
  fragment  Apostrophe   :'\'';
   
  fragment NEWLINE:'\r' ? '\n' {skip();};
   
  WS : (' ' |'\t' |'\n' |'\r' )+ {skip();} ;
   
   
   

       
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