//==- DIAEnumFrameData.cpp ---------------------------------------*- C++ -*-==//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#include "llvm/DebugInfo/PDB/DIA/DIAEnumFrameData.h"
#include "llvm/DebugInfo/PDB/DIA/DIAFrameData.h"
#include "llvm/DebugInfo/PDB/DIA/DIASession.h"

using namespace llvm::pdb;

DIAEnumFrameData::DIAEnumFrameData(CComPtr<IDiaEnumFrameData> DiaEnumerator)
    : Enumerator(DiaEnumerator) {}

uint32_t DIAEnumFrameData::getChildCount() const {
  LONG Count = 0;
  return (S_OK == Enumerator->get_Count(&Count)) ? Count : 0;
}

std::unique_ptr<IPDBFrameData>
DIAEnumFrameData::getChildAtIndex(uint32_t Index) const {
  CComPtr<IDiaFrameData> Item;
  if (S_OK != Enumerator->Item(Index, &Item))
    return nullptr;

  return std::unique_ptr<IPDBFrameData>(new DIAFrameData(Item));
}

std::unique_ptr<IPDBFrameData> DIAEnumFrameData::getNext() {
  CComPtr<IDiaFrameData> Item;
  ULONG NumFetched = 0;
  if (S_OK != Enumerator->Next(1, &Item, &NumFetched))
    return nullptr;

  return std::unique_ptr<IPDBFrameData>(new DIAFrameData(Item));
}

void DIAEnumFrameData::reset() { Enumerator->Reset(); }