PointerInstruction.h

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/*
// $Id: //open/dev/fennel/calculator/PointerInstruction.h#5 $
// Fennel is a library of data storage and processing components.
// Copyright (C) 2005-2009 The Eigenbase Project
// Copyright (C) 2004-2009 SQLstream, Inc.
// Copyright (C) 2009-2009 LucidEra, Inc.
//
// 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 approved by The Eigenbase Project.
//
// 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
// PointerInstruction
//
// Instruction->Pointer
//
// Template for all native types
*/
#ifndef Fennel_PointerInstruction_Included
#define Fennel_PointerInstruction_Included

#include "fennel/calculator/Instruction.h"

FENNEL_BEGIN_NAMESPACE


typedef uint32_t PointerSizeT;
#define POINTERSIZET_STANDARD_TYPE STANDARD_TYPE_UINT_32

typedef uint32_t PointerOperandT;
#define POINTEROPERANDT_STANDARD_TYPE STANDARD_TYPE_UINT_32

class FENNEL_CALCULATOR_EXPORT PointerInstruction
    : public Instruction
{
public:
    explicit
    PointerInstruction() {}
    ~PointerInstruction() {}

protected:
    static vector<StandardTypeDescriptorOrdinal>
    regDesc(
        uint sizetArgs1,
        uint ptrArgs,
        StandardTypeDescriptorOrdinal type,
        uint operandArgs2)
    {
        vector<StandardTypeDescriptorOrdinal> v(
            sizetArgs1,
            POINTERSIZET_STANDARD_TYPE);
        uint i;
        for (i = 0; i < ptrArgs; i++) {
            v.push_back(type);
        }
        for (i = 0; i < operandArgs2; i++) {
            v.push_back(POINTEROPERANDT_STANDARD_TYPE);
        }
        return v;
    }
};


//
// PointerInstruction_NotAPointerType
//
// Force the use of a (non-pointer) native type.
// Note: You cannot use typedefs like int32_t here or the
// built-in names thereof won't work. By using the built-in
// type name, you can support the built-in and typedefs
// built on top. Also, signed char is somehow different
// than char. This is not true for short, int, long or
// long long.
//
template <class T> class PointerInstruction_NotAPointerType;
template <> class PointerInstruction_NotAPointerType<char *> {};
template <> class PointerInstruction_NotAPointerType<short *> {};
template <> class PointerInstruction_NotAPointerType<int *> {};
template <> class PointerInstruction_NotAPointerType<long *> {};
template <> class PointerInstruction_NotAPointerType<long long *> {};
template <> class PointerInstruction_NotAPointerType<unsigned char *> {};
template <> class PointerInstruction_NotAPointerType<unsigned short *> {};
template <> class PointerInstruction_NotAPointerType<unsigned int *> {};
template <> class PointerInstruction_NotAPointerType<unsigned long *> {};
template <> class PointerInstruction_NotAPointerType<unsigned long long *> {};
template <> class PointerInstruction_NotAPointerType<signed char *> {};
template <> class PointerInstruction_NotAPointerType<float *> {};
template <> class PointerInstruction_NotAPointerType<double *> {};

FENNEL_END_NAMESPACE

#endif

// End PointerInstruction.h

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