1//===- DIAEnumTables.cpp - DIA Table 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/DIAEnumTables.h"
10#include "llvm/DebugInfo/PDB/DIA/DIATable.h"
11
12using namespace llvm;
13using namespace llvm::pdb;
14
15DIAEnumTables::DIAEnumTables(CComPtr<IDiaEnumTables> DiaEnumerator)
16    : Enumerator(DiaEnumerator) {}
17
18uint32_t DIAEnumTables::getChildCount() const {
19  LONG Count = 0;
20  return (S_OK == Enumerator->get_Count(&Count)) ? Count : 0;
21}
22
23std::unique_ptr<IPDBTable>
24DIAEnumTables::getChildAtIndex(uint32_t Index) const {
25  CComPtr<IDiaTable> Item;
26  VARIANT Var;
27  Var.vt = VT_UINT;
28  Var.uintVal = Index;
29  if (S_OK != Enumerator->Item(Var, &Item))
30    return nullptr;
31
32  return std::unique_ptr<IPDBTable>(new DIATable(Item));
33}
34
35std::unique_ptr<IPDBTable> DIAEnumTables::getNext() {
36  CComPtr<IDiaTable> Item;
37  ULONG CeltFetched = 0;
38  if (S_OK != Enumerator->Next(1, &Item, &CeltFetched))
39    return nullptr;
40
41  return std::unique_ptr<IPDBTable>(new DIATable(Item));
42}
43
44void DIAEnumTables::reset() { Enumerator->Reset(); }
45