MetaProg.h

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//------------------------------------------------------------------------
//
//   Joe Kniss
//     3-20-03
//                   ________    ____   ___ 
//                  |        \  /    | /  /
//                  +---+     \/     |/  /
//                  +--+|  |\    /|     < 
//                  |  ||  | \  / |  |\  \ 
//                  |      |  \/  |  | \  \ 
//                   \_____|      |__|  \__\
//                       Copyright  2003 
//                      Joe Michael Kniss
//                   <<< jmk@cs.utah.edu >>>
//               "All Your Base are Belong to Us"
//-------------------------------------------------------------------------

///MetaProg.h
///  a base class for grinder metaprograms

#ifndef __GRINDER_META_PROG_DOT_H
#define __GRINDER_META_PROG_DOT_H

#include <simBase/simBase.h>
#include <smartptr.h>
#include "Tape.h"
#include "GrinderKeys.h"
#include "GrinderKinds.h"
#include <vector>
#include <sstream>

class MetaProg : 
   public SimBase,
   public gutz::Counted
{
public:
   virtual ~MetaProg() {}

   /// from <GrinderKinds.h>
   int getKind() const {return _kind;}

   /// hopefully this will go away soon
   virtual std::string genText() {std::string();}

   static void pushScope(){}
   static void popScope() {}


   std::ostringstream &operator<<(std::ostringstream &oss);

protected:
   MetaProg() : _kind(GK_UNKNOWN) {}
   MetaProg(int kind) : _kind(kind) {}
   MetaProg(const MetaProg &mp) {}/// not used
   MetaProg &operator=(const MetaProg &mp) {} ///not used

   int _kind;
};

typedef gutz::SmartPtr<MetaProg> MetaProgSP;
typedef std::vector<MetaProgSP>  MetaProgSPVec;
typedef MetaProgSPVec::iterator  MetaProgSPVecIter;

//////////////////////////////////////////////////////////
/// specific kinds of metaprograms, mostly for typing
//////////////////////////////////////////////////////////

////////////////////////////////
/// Fragment
////////////////////////////////

class FPMetaProg : public MetaProg 
{
public:
   virtual ~FPMetaProg() {}
   
protected:
   FPMetaProg() : MetaProg(GK_FRAGMENT) {}
};

////////////////////////////////
/// Vertex
////////////////////////////////

class VPMetaProg : public MetaProg 
{
public:
   virtual ~VPMetaProg() {}

protected:
   VPMetaProg() : MetaProg(GK_VERTEX) {}
};

//////////////////////////////////////////////////////////
/// some implementation
//////////////////////////////////////////////////////////

inline
std::ostringstream &MetaProg::operator<<(std::ostringstream &oss)
{
   oss << "## meta: " << typeid(*this).name() << "::"
      << getName() << "\n";
   oss << genText();
   return oss;
}

inline
std::ostringstream &operator<<(std::ostringstream &oss, MetaProgSP m)
{
   return m->operator<<(oss);
}


#endif

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