llvm-project/llvm/lib/DebugInfo/PDB/DIA/DIAEnumDebugStreams.cpp

55 lines
1.7 KiB
C++

//==- DIAEnumDebugStreams.cpp - DIA Debug Stream Enumerator impl -*- 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/DIAEnumDebugStreams.h"
#include "llvm/DebugInfo/PDB/DIA/DIADataStream.h"
#include "llvm/DebugInfo/PDB/PDBSymbol.h"
using namespace llvm;
using namespace llvm::pdb;
DIAEnumDebugStreams::DIAEnumDebugStreams(
CComPtr<IDiaEnumDebugStreams> DiaEnumerator)
: Enumerator(DiaEnumerator) {}
uint32_t DIAEnumDebugStreams::getChildCount() const {
LONG Count = 0;
return (S_OK == Enumerator->get_Count(&Count)) ? Count : 0;
}
std::unique_ptr<IPDBDataStream>
DIAEnumDebugStreams::getChildAtIndex(uint32_t Index) const {
CComPtr<IDiaEnumDebugStreamData> Item;
VARIANT VarIndex;
VarIndex.vt = VT_I4;
VarIndex.lVal = Index;
if (S_OK != Enumerator->Item(VarIndex, &Item))
return nullptr;
return std::unique_ptr<IPDBDataStream>(new DIADataStream(Item));
}
std::unique_ptr<IPDBDataStream> DIAEnumDebugStreams::getNext() {
CComPtr<IDiaEnumDebugStreamData> Item;
ULONG NumFetched = 0;
if (S_OK != Enumerator->Next(1, &Item, &NumFetched))
return nullptr;
return std::unique_ptr<IPDBDataStream>(new DIADataStream(Item));
}
void DIAEnumDebugStreams::reset() { Enumerator->Reset(); }
DIAEnumDebugStreams *DIAEnumDebugStreams::clone() const {
CComPtr<IDiaEnumDebugStreams> EnumeratorClone;
if (S_OK != Enumerator->Clone(&EnumeratorClone))
return nullptr;
return new DIAEnumDebugStreams(EnumeratorClone);
}