LLVM  10.0.0svn
DIAEnumSourceFiles.cpp
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1 //==- DIAEnumSourceFiles.cpp - DIA Source File 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  const DIASession &PDBSession, CComPtr<IDiaEnumSourceFiles> DiaEnumerator)
18  : Session(PDBSession), Enumerator(DiaEnumerator) {}
19 
21  LONG Count = 0;
22  return (S_OK == Enumerator->get_Count(&Count)) ? Count : 0;
23 }
24 
25 std::unique_ptr<IPDBSourceFile>
27  CComPtr<IDiaSourceFile> Item;
28  if (S_OK != Enumerator->Item(Index, &Item))
29  return nullptr;
30 
31  return std::unique_ptr<IPDBSourceFile>(new DIASourceFile(Session, Item));
32 }
33 
34 std::unique_ptr<IPDBSourceFile> DIAEnumSourceFiles::getNext() {
35  CComPtr<IDiaSourceFile> Item;
36  ULONG NumFetched = 0;
37  if (S_OK != Enumerator->Next(1, &Item, &NumFetched))
38  return nullptr;
39 
40  return std::unique_ptr<IPDBSourceFile>(new DIASourceFile(Session, Item));
41 }
42 
43 void DIAEnumSourceFiles::reset() { Enumerator->Reset(); }
This class represents lattice values for constants.
Definition: AllocatorList.h:23
DIAEnumSourceFiles(const DIASession &PDBSession, CComPtr< IDiaEnumSourceFiles > DiaEnumerator)
ChildTypePtr getNext() override
uint32_t getChildCount() const override
ChildTypePtr getChildAtIndex(uint32_t Index) const override