binop.hh

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/************************************************************************
 ************************************************************************
    FAUST compiler
    Copyright (C) 2003-2004 GRAME, Centre National de Creation Musicale
    ---------------------------------------------------------------------
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 ************************************************************************
 ************************************************************************/
 
 
 
#ifndef _BINOP_
#define _BINOP_

#include "node.hh"

typedef const Node  (*comp) (const Node& a, const Node& b);
typedef bool        (*pred) (const Node& a);

struct BinOp 
{
    const char* fName;
    const char* fNameVec;
    const char* fNameScal;
    comp        fCompute;
    pred        fLeftNeutral;
    pred        fRightNeutral;
    int         fPriority;
    //
    BinOp (const char* name, const char* namevec, const char* namescal, comp f, pred ln, pred rn, int priority) 
            : fName(name), fNameVec(namevec), fNameScal(namescal), fCompute(f), fLeftNeutral(ln), fRightNeutral(rn), fPriority(priority) {  }
    //
    Node compute(const Node& a, const Node& b) { return fCompute(a,b);  }
    //
    bool isRightNeutral(const Node& a)  { return fRightNeutral(a);  }
    bool isLeftNeutral(const Node& a)   { return fLeftNeutral(a);   }
};

extern BinOp* gBinOpTable[];
extern BinOp* gBinOpLateqTable[];


enum {
    kAdd, kSub, kMul, kDiv, kRem,
    kLsh, kRsh,
    kGT, kLT, kGE, kLE, kEQ, kNE,
    kAND, kOR, kXOR
};

#endif