1 //==- DIAEnumSymbols.cpp - DIA Symbol 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/DIAEnumSymbols.h"
10 #include "llvm/DebugInfo/PDB/DIA/DIARawSymbol.h"
11 #include "llvm/DebugInfo/PDB/DIA/DIASession.h"
12 #include "llvm/DebugInfo/PDB/PDBSymbol.h"
13 
14 using namespace llvm;
15 using namespace llvm::pdb;
16 
17 DIAEnumSymbols::DIAEnumSymbols(const DIASession &PDBSession,
18                                CComPtr<IDiaEnumSymbols> DiaEnumerator)
19     : Session(PDBSession), Enumerator(DiaEnumerator) {}
20 
21 uint32_t DIAEnumSymbols::getChildCount() const {
22   LONG Count = 0;
23   return (S_OK == Enumerator->get_Count(&Count)) ? Count : 0;
24 }
25 
26 std::unique_ptr<PDBSymbol>
27 DIAEnumSymbols::getChildAtIndex(uint32_t Index) const {
28   CComPtr<IDiaSymbol> Item;
29   if (S_OK != Enumerator->Item(Index, &Item))
30     return nullptr;
31 
32   std::unique_ptr<DIARawSymbol> RawSymbol(new DIARawSymbol(Session, Item));
33   return std::unique_ptr<PDBSymbol>(PDBSymbol::create(Session, std::move(RawSymbol)));
34 }
35 
36 std::unique_ptr<PDBSymbol> DIAEnumSymbols::getNext() {
37   CComPtr<IDiaSymbol> Item;
38   ULONG NumFetched = 0;
39   if (S_OK != Enumerator->Next(1, &Item, &NumFetched))
40     return nullptr;
41 
42   std::unique_ptr<DIARawSymbol> RawSymbol(new DIARawSymbol(Session, Item));
43   return std::unique_ptr<PDBSymbol>(
44       PDBSymbol::create(Session, std::move(RawSymbol)));
45 }
46 
47 void DIAEnumSymbols::reset() { Enumerator->Reset(); }
48