1 //==- DIAEnumDebugStreams.cpp - DIA Debug Stream Enumerator impl -*- C++ -*-==// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "llvm/DebugInfo/PDB/DIA/DIAEnumDebugStreams.h" 10 #include "llvm/DebugInfo/PDB/DIA/DIADataStream.h" 11 #include "llvm/DebugInfo/PDB/PDBSymbol.h" 12 13 using namespace llvm; 14 using namespace llvm::pdb; 15 16 DIAEnumDebugStreams::DIAEnumDebugStreams( 17 CComPtr<IDiaEnumDebugStreams> DiaEnumerator) 18 : Enumerator(DiaEnumerator) {} 19 20 uint32_t DIAEnumDebugStreams::getChildCount() const { 21 LONG Count = 0; 22 return (S_OK == Enumerator->get_Count(&Count)) ? Count : 0; 23 } 24 25 std::unique_ptr<IPDBDataStream> 26 DIAEnumDebugStreams::getChildAtIndex(uint32_t Index) const { 27 CComPtr<IDiaEnumDebugStreamData> Item; 28 VARIANT VarIndex; 29 VarIndex.vt = VT_I4; 30 VarIndex.lVal = Index; 31 if (S_OK != Enumerator->Item(VarIndex, &Item)) 32 return nullptr; 33 34 return std::unique_ptr<IPDBDataStream>(new DIADataStream(Item)); 35 } 36 37 std::unique_ptr<IPDBDataStream> DIAEnumDebugStreams::getNext() { 38 CComPtr<IDiaEnumDebugStreamData> Item; 39 ULONG NumFetched = 0; 40 if (S_OK != Enumerator->Next(1, &Item, &NumFetched)) 41 return nullptr; 42 43 return std::unique_ptr<IPDBDataStream>(new DIADataStream(Item)); 44 } 45 46 void DIAEnumDebugStreams::reset() { Enumerator->Reset(); } 47