LLVM  3.7.0
DIAEnumDebugStreams.cpp
Go to the documentation of this file.
1 //==- DIAEnumDebugStreams.cpp - DIA Debug Stream Enumerator impl -*- C++ -*-==//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
13 
14 using namespace llvm;
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>
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 
49  CComPtr<IDiaEnumDebugStreams> EnumeratorClone;
50  if (S_OK != Enumerator->Clone(&EnumeratorClone))
51  return nullptr;
52  return new DIAEnumDebugStreams(EnumeratorClone);
53 }
DIAEnumDebugStreams(CComPtr< IDiaEnumDebugStreams > DiaEnumerator)
ChildTypePtr getNext() override
uint32_t getChildCount() const override
ChildTypePtr getChildAtIndex(uint32_t Index) const override
DIAEnumDebugStreams * clone() const override