docs: public final void mOCTAL() throws RecognitionException {
          try {
              int _type = OCTAL;
              int _channel = DEFAULT_TOKEN_CHANNEL;
              // com/dyuproject/protostuff/parser/ProtoLexer.g:256:5: ( '0' ( '0' .. '7' )+ )
              // com/dyuproject/protostuff/parser/ProtoLexer.g:256:9: '0' ( '0' .. '7' )+
              {
              match('0'); 
              // com/dyuproject/protostuff/parser/ProtoLexer.g:256:13: ( '0' .. '7' )+
              int cnt12=0;
              loop12:
              do {
                  int alt12=2;
                  switch ( input.LA(1) ) {
                  case '0':
                  case '1':
                  case '2':
                  case '3':
                  case '4':
                  case '5':
                  case '6':
                  case '7':
                      {
                      alt12=1;
                      }
                      break;
  
                  }
  
                  switch (alt12) {
              	case 1 :
              	    // com/dyuproject/protostuff/parser/ProtoLexer.g:256:14: '0' .. '7'
              	    {
              	    matchRange('0','7'); 
  
              	    }
              	    break;
  
              	default :
              	    if ( cnt12 >= 1 ) break loop12;
                          EarlyExitException eee =
                              new EarlyExitException(12, input);
                          throw eee;
                  }
                  cnt12++;
              } while (true);
  
  
              }
  
              state.type = _type;
              state.channel = _channel;
          }
          finally {
          }
      }