Flex++ problem

I am trying to rebuild an old piece of lexical scanner / analyzer code,
which I believe was generated by flex++/bison++.


The rebuild is required because existing code is only a 7-bit scanner
(uses char rather than unsigned char as its character type, and the
tables only go up to 127) and I need to work with 8-bit input.


However when I try to regenerate the code, flex++ does not seem to
understand some of the syntax in the .l file. The file starts out as
follows:


      /* (a load of comments first) */


      %name JobRunScan


      %define LEX_PARAM \
              YY_JobRunParse_STYPE* value, \
              YY_JobRunParse_LTYPE* loc


      %define MEMBERS \
      public: \
          int line() const \
          { return m_line; } \
      \
      private: \
          istream* m_cin; \
          int m_line;




But flex++ just comes up with a load of errors:


      "JobRunScan.l", line 27: bad character: %
      "JobRunScan.l", line 27: unknown error processing section 1
      "JobRunScan.l", line 27: unknown error processing section 1
      "JobRunScan.l", line 27: unknown error processing section 1
      "JobRunScan.l", line 29: unrecognized '%' directive
      "JobRunScan.l", line 33: unrecognized '%' directive
      "JobRunScan.l", line 37: bad character: \


It simply does not recognize either %name or %define as valid.


I have tried searching Google for some relevant information, and I found
some examples that imply that this is correct flex++ syntax. But I
didn't come up with any solutions... (it doesn't help that most search
engines don't let you search for terms containing a percent sign).


Does anyone have any idea what I might be doing wrong?


--
Tom Heathcote
TomHeathcote@spamcop.net

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