bds.mr.dpg/doc/tutorial/old/multiLexer/javaLexer.g

unit JavaLexer;

uses
{
   dpgTokenStreamSelector;
}

lexer TJavaLexer;
options
{
   k = 2;
   importVocab = JavaDoc;
   exportVocab = Java;
}

tokens
{
   "int";
}

memberdecl
{
   public
      Selector : IdpgTokenStreamSelector;
}

// ----------------------------------------------------------------------------
// Simple tokens
// ----------------------------------------------------------------------------
SEMI  : ';';

// ----------------------------------------------------------------------------
// JavaDocOpen
// ----------------------------------------------------------------------------
JAVADOC_OPEN
   :  "/**"    { Selector.Push('docLexer');  }
   ;
   
// ----------------------------------------------------------------------------
// Identifier
// ----------------------------------------------------------------------------
ID 
options
{
   testLiterals = true;
}
   :  ('a'..'z')+
   ;

WS 
   :   
      (
         ' '
      |  '\t'
      |
         (
            '\r' '\n'
         |  '\r'
         |  '\n'
         )
         {
            newLine;
         }
      )
      {
         _ttype := TT_SKIP;
      }
   ;