lib/DebugInfo/PDB/DIA/DIAEnumLineNumbers.cpp

   1 //==- DIAEnumLineNumbers.cpp - DIA Line Number 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/DIAEnumLineNumbers.h"
  10 #include "llvm/DebugInfo/PDB/DIA/DIALineNumber.h"
  11 #include "llvm/DebugInfo/PDB/PDBSymbol.h"
  12
  13 using namespace llvm;
  14 using namespace llvm::pdb;
  15
  16 DIAEnumLineNumbers::DIAEnumLineNumbers(
  17     CComPtr<IDiaEnumLineNumbers> DiaEnumerator)
  18     : Enumerator(DiaEnumerator) {}
  19
  20 uint32_t DIAEnumLineNumbers::getChildCount() const {
  21   LONG Count = 0;
  22   return (S_OK == Enumerator->get_Count(&Count)) ? Count : 0;
  23 }
  24
  25 std::unique_ptr<IPDBLineNumber>
  26 DIAEnumLineNumbers::getChildAtIndex(uint32_t Index) const {
  27   CComPtr<IDiaLineNumber> Item;
  28   if (S_OK != Enumerator->Item(Index, &Item))
  29     return nullptr;
  30
  31   return std::unique_ptr<IPDBLineNumber>(new DIALineNumber(Item));
  32 }
  33
  34 std::unique_ptr<IPDBLineNumber> DIAEnumLineNumbers::getNext() {
  35   CComPtr<IDiaLineNumber> Item;
  36   ULONG NumFetched = 0;
  37   if (S_OK != Enumerator->Next(1, &Item, &NumFetched))
  38     return nullptr;
  39
  40   return std::unique_ptr<IPDBLineNumber>(new DIALineNumber(Item));
  41 }
  42
  43 void DIAEnumLineNumbers::reset() { Enumerator->Reset(); }