1//==- DIAEnumSymbols.cpp - DIA Symbol 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
10#include "llvm/DebugInfo/PDB/PDBSymbol.h"
11#include "llvm/DebugInfo/PDB/DIA/DIAEnumSymbols.h"
12#include "llvm/DebugInfo/PDB/DIA/DIARawSymbol.h"
13#include "llvm/DebugInfo/PDB/DIA/DIASession.h"
14
15using namespace llvm;
16using namespace llvm::pdb;
17
18DIAEnumSymbols::DIAEnumSymbols(const DIASession &PDBSession,
19                               CComPtr<IDiaEnumSymbols> DiaEnumerator)
20    : Session(PDBSession), Enumerator(DiaEnumerator) {}
21
22uint32_t DIAEnumSymbols::getChildCount() const {
23  LONG Count = 0;
24  return (S_OK == Enumerator->get_Count(&Count)) ? Count : 0;
25}
26
27std::unique_ptr<PDBSymbol>
28DIAEnumSymbols::getChildAtIndex(uint32_t Index) const {
29  CComPtr<IDiaSymbol> Item;
30  if (S_OK != Enumerator->Item(Index, &Item))
31    return nullptr;
32
33  std::unique_ptr<DIARawSymbol> RawSymbol(new DIARawSymbol(Session, Item));
34  return std::unique_ptr<PDBSymbol>(PDBSymbol::create(Session, std::move(RawSymbol)));
35}
36
37std::unique_ptr<PDBSymbol> DIAEnumSymbols::getNext() {
38  CComPtr<IDiaSymbol> Item;
39  ULONG NumFetched = 0;
40  if (S_OK != Enumerator->Next(1, &Item, &NumFetched))
41    return nullptr;
42
43  std::unique_ptr<DIARawSymbol> RawSymbol(new DIARawSymbol(Session, Item));
44  return std::unique_ptr<PDBSymbol>(
45      PDBSymbol::create(Session, std::move(RawSymbol)));
46}
47
48void DIAEnumSymbols::reset() { Enumerator->Reset(); }
49
50DIAEnumSymbols *DIAEnumSymbols::clone() const {
51  CComPtr<IDiaEnumSymbols> EnumeratorClone;
52  if (S_OK != Enumerator->Clone(&EnumeratorClone))
53    return nullptr;
54  return new DIAEnumSymbols(Session, EnumeratorClone);
55}
56