LLVM  10.0.0svn
DIAEnumDebugStreams.cpp
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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 
12 
13 using namespace llvm;
14 using namespace llvm::pdb;
15 
17  CComPtr<IDiaEnumDebugStreams> DiaEnumerator)
18  : Enumerator(DiaEnumerator) {}
19 
21  LONG Count = 0;
22  return (S_OK == Enumerator->get_Count(&Count)) ? Count : 0;
23 }
24 
25 std::unique_ptr<IPDBDataStream>
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(); }
This class represents lattice values for constants.
Definition: AllocatorList.h:23
DIAEnumDebugStreams(CComPtr< IDiaEnumDebugStreams > DiaEnumerator)
uint32_t getChildCount() const override
ChildTypePtr getChildAtIndex(uint32_t Index) const override