cppvalue.h

/************************************************************************
*
* Copyright (c) 2014-2025 Barbara Geller & Ansel Sermersheim
*
* Copyright (c) 1997-2014 Dimitri van Heesch
*
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* version 2 as published by the Free Software Foundation.
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#ifndef CPPVALUE_H
#define CPPVALUE_H

#include <stdio.h>

//  class representing a C-preprocessor value
class CPPValue
{
 public:
   enum Type { Int, Float };

   CPPValue(long val = 0) : type(Int) {
      v.l = val;
   }

   CPPValue(double val) : type(Float) {
      v.d = val;
   }

   operator double () const {
      return type == Int ? (double)v.l : v.d;
   }

   operator long ()   const {
      return type == Int ? v.l : (long)v.d;
   }

   bool isInt() const {
      return type == Int;
   }

   void print() const {
      if (type == Int) {
         printf("(%ld)\n", v.l);

      } else {
         printf("(%f)\n", v.d);
      }
   }

 private:
   Type type;

   union {
      double d;
      long l;
   } v;
};

CPPValue parseOctal();
CPPValue parseDecimal();
CPPValue parseHexadecimal();
CPPValue parseCharacter();
CPPValue parseFloat();

#endif