//===- SPIRVBasicBlock.cpp - SPIR-V Basic Block ------------------*- 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.
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// copy of this software and associated documentation files (the "Software"),
// to deal with the Software without restriction, including without limitation
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//
//===----------------------------------------------------------------------===//
/// \file
///
/// This file implements SPIRV basic block.
///
//===----------------------------------------------------------------------===//

#include "SPIRVEntry.h"
#include "SPIRVValue.h"
#include "SPIRVBasicBlock.h"
#include "SPIRVInstruction.h"
#include "SPIRVFunction.h"
#include "SPIRVStream.h"

#include <iostream>

using namespace SPIRV;

SPIRVBasicBlock::SPIRVBasicBlock(SPIRVId TheId, SPIRVFunction *Func)
  :SPIRVValue(Func->getModule(), 2, OpLabel, TheId), ParentF(Func) {
  setAttr();
  validate();
}

SPIRVDecoder
SPIRVBasicBlock::getDecoder(std::istream &IS){
  return SPIRVDecoder(IS, *this);
}

/// Assume I contains valid Id.
SPIRVInstruction *
SPIRVBasicBlock::addInstruction(SPIRVInstruction *I) {
  assert(I && "Invalid instruction");
  Module->add(I);
  I->setParent(this);
  InstVec.push_back(I);
  return I;
}

void
SPIRVBasicBlock::encodeChildren(spv_ostream &O) const {
  O << SPIRVNL();
  for (size_t i = 0, e = InstVec.size(); i != e; ++i)
    O << *InstVec[i];
}

_SPIRV_IMP_ENCDEC1(SPIRVBasicBlock, Id)

void
SPIRVBasicBlock::setScope(SPIRVEntry *Scope) {
  assert(Scope && Scope->getOpCode() == OpFunction && "Invalid scope");
  setParent(static_cast<SPIRVFunction*>(Scope));
}