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======================= end_copyright_notice ==================================*/

//===- SPIRVtype.cpp - Class to represent a SPIR-V type ----------*- C++ -*-===//
//
//                     The LLVM/SPIRV Translator
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
// Copyright (c) 2014 Advanced Micro Devices, Inc. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal with the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimers.
// Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimers in the documentation
// and/or other materials provided with the distribution.
// Neither the names of Advanced Micro Devices, Inc., nor the names of its
// contributors may be used to endorse or promote products derived from this
// Software without specific prior written permission.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS WITH
// THE SOFTWARE.
//
//===----------------------------------------------------------------------===//
/// \file
///
/// This file implements the types defined in SPIRV spec with op codes.
///
//===----------------------------------------------------------------------===//

#include "SPIRVType.h"
#include "SPIRVDecorate.h"
#include "SPIRVValue.h"

namespace spv{

SPIRVType*
SPIRVType::getArrayElementType() const {
  assert(OpCode == OpTypeArray && "Not array type");
  return static_cast<const SPIRVTypeArray *const>(this)->getElementType();
}

uint64_t
SPIRVType::getArrayLength() const {
  assert(OpCode == OpTypeArray && "Not array type");
  return static_cast<const SPIRVTypeArray *const>(this)->getLength()->
      getZExtIntValue();
}

SPIRVWord
SPIRVType::getBitWidth() const {
  if (isTypeVector())
    return getVectorComponentType()->getBitWidth();
  if (isTypeBool())
    return 1;
  return isTypeInt()? getIntegerBitWidth() : getFloatBitWidth();
}

SPIRVWord
SPIRVType::getFloatBitWidth()const {
  assert(OpCode == OpTypeFloat && "Not an integer type");
  return static_cast<const SPIRVTypeFloat *const>(this)->getBitWidth();
}

SPIRVWord
SPIRVType::getIntegerBitWidth()const {
  assert((OpCode == OpTypeInt || OpCode == OpTypeBool) &&
      "Not an integer type");
  if (isTypeBool())
    return 1;
  return static_cast<const SPIRVTypeInt *const>(this)->getBitWidth();
}

SPIRVType *
SPIRVType::getFunctionReturnType() const {
  assert(OpCode == OpTypeFunction);
  return static_cast<const SPIRVTypeFunction *const>(this)->getReturnType();
}

SPIRVType *
SPIRVType::getPointerElementType()const {
  assert(OpCode == OpTypePointer && "Not a pointer type");
  return static_cast<const SPIRVTypePointer *const>(this)->getElementType();
}

SPIRVStorageClassKind
SPIRVType::getPointerStorageClass() const {
  assert(OpCode == OpTypePointer && "Not a pointer type");
  return static_cast<const SPIRVTypePointer *const>(this)->getStorageClass();
}

SPIRVType*
SPIRVType::getStructMemberType(size_t Index) const {
  assert(OpCode == OpTypeStruct && "Not struct type");
  return static_cast<const SPIRVTypeStruct *const>(this)->getMemberType(Index);
}

SPIRVWord
SPIRVType::getStructMemberCount() const {
  assert(OpCode == OpTypeStruct && "Not struct type");
  return static_cast<const SPIRVTypeStruct *const>(this)->getMemberCount();
}

SPIRVWord
SPIRVType::getVectorComponentCount() const {
  assert(OpCode == OpTypeVector && "Not vector type");
  return static_cast<const SPIRVTypeVector *const>(this)->getComponentCount();
}

SPIRVType*
SPIRVType::getVectorComponentType() const {
  assert(OpCode == OpTypeVector && "Not vector type");
  return static_cast<const SPIRVTypeVector *const>(this)->getComponentType();
}

bool
SPIRVType::isTypeVoid() const {
  return OpCode == OpTypeVoid;
}
bool
SPIRVType::isTypeArray() const {
  return OpCode == OpTypeArray;
}

bool
SPIRVType::isTypeBool()const {
  return OpCode == OpTypeBool;
}

bool
SPIRVType::isTypeComposite() const {
  return isTypeVector() || isTypeArray() || isTypeStruct();
}

bool
SPIRVType::isTypeFloat(unsigned Bits)const {
  return isType<SPIRVTypeFloat>(this, Bits);
}

bool
SPIRVType::isTypeOCLImage()const {
  return isTypeImage() && static_cast<const SPIRVTypeImage *>(this)->
    isOCLImage();
}

bool
SPIRVType::isTypePipe()const {
  return OpCode == OpTypePipe;
}

bool
SPIRVType::isTypeReserveId() const {
  return OpCode == OpTypeReserveId;
}

bool
SPIRVType::isTypeInt(unsigned Bits)const {
  return isType<SPIRVTypeInt>(this, Bits);
}

bool
SPIRVType::isTypePointer()const {
  return OpCode == OpTypePointer;
}

bool
SPIRVType::isTypeOpaque()const {
  return OpCode == OpTypeOpaque;
}

bool
SPIRVType::isTypeEvent()const {
  return OpCode == OpTypeEvent;
}

bool
SPIRVType::isTypeDeviceEvent()const {
  return OpCode == OpTypeDeviceEvent;
}

bool
SPIRVType::isTypeSampler()const {
  return OpCode == OpTypeSampler;
}

bool
SPIRVType::isTypeImage()const {
  return OpCode == OpTypeImage;
}

bool 
SPIRVType::isTypeSampledImage() const {
    return OpCode == OpTypeSampledImage;
}

bool
SPIRVType::isTypeStruct() const {
  return OpCode == OpTypeStruct;
}

bool
SPIRVType::isTypeVector() const {
  return OpCode == OpTypeVector;
}

bool
SPIRVType::isTypeNamedBarrier() const {
  return OpCode == OpTypeNamedBarrier;
}

bool
SPIRVType::isTypeVectorBool() const {
  return isTypeVector() && getVectorComponentType()->isTypeBool();
}

bool
SPIRVType::isTypeVectorInt() const {
  return isTypeVector() && getVectorComponentType()->isTypeInt();
}

bool
SPIRVType::isTypeVectorFloat() const {
  return isTypeVector() && getVectorComponentType()->isTypeFloat();
}

bool
SPIRVType::isTypeVectorOrScalarBool() const {
  return isTypeBool() || isTypeVectorBool();
}

bool
SPIRVType::isTypeVectorOrScalarInt() const {
  return isTypeInt() || isTypeVectorInt();
}

bool
SPIRVType::isTypeVectorOrScalarFloat() const {
  return isTypeFloat() || isTypeVectorFloat();
}

void SPIRVTypeStruct::decode(std::istream &I)
{
    auto Decoder = getDecoder(I);
    Decoder >> Id;

    for (size_t i = 0, e = MemberTypeVec.size(); i != e; ++i)
    {
        SPIRVId currId;
        Decoder >> currId;

        if (Decoder.M.exist(currId))
        {
            MemberTypeVec[i] = static_cast<SPIRVType*>(Decoder.M.getEntry(currId));
        }
        else
        {
            MemberTypeVec[i] = nullptr;
            Decoder.M.addUnknownStructField(this, i, currId);
        }
    }
}

bool
SPIRVTypeStruct::isPacked() const {
  return hasDecorate(DecorationCPacked);
}

void
SPIRVTypeStruct::setPacked(bool Packed) {
  if (Packed)
    addDecorate(new SPIRVDecorate(DecorationCPacked, this));
  else
    eraseDecorate(DecorationCPacked);
}

SPIRVTypeArray::SPIRVTypeArray(SPIRVModule *M, SPIRVId TheId, SPIRVType *TheElemType,
        SPIRVConstant* TheLength)
      :SPIRVType(M, 4, OpTypeArray, TheId), ElemType(TheElemType),
       Length(TheLength->getId()){
      validate();
    }

void
SPIRVTypeArray::validate()const {
  SPIRVEntry::validate();
  ElemType->validate();
  assert(getValue(Length)->getType()->isTypeInt() &&
      get<SPIRVConstant>(Length)->getZExtIntValue() > 0);
}

SPIRVConstant*
SPIRVTypeArray::getLength() const {
  return get<SPIRVConstant>(Length);
}

_SPIRV_IMP_DEC3(SPIRVTypeArray, Id, ElemType, Length)

}

