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//===- DIADataStream.cpp - DIA implementation of IPDBDataStream -*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/DebugInfo/PDB/DIA/DIADataStream.h"
#include "llvm/DebugInfo/PDB/DIA/DIAUtils.h"
using namespace llvm;
using namespace llvm::pdb;
DIADataStream::DIADataStream(CComPtr<IDiaEnumDebugStreamData> DiaStreamData)
: StreamData(DiaStreamData) {}
uint32_t DIADataStream::getRecordCount() const {
LONG Count = 0;
return (S_OK == StreamData->get_Count(&Count)) ? Count : 0;
}
std::string DIADataStream::getName() const {
return invokeBstrMethod(*StreamData, &IDiaEnumDebugStreamData::get_name);
}
std::optional<DIADataStream::RecordType>
DIADataStream::getItemAtIndex(uint32_t Index) const {
RecordType Record;
DWORD RecordSize = 0;
StreamData->Item(Index, 0, &RecordSize, nullptr);
if (RecordSize == 0)
return std::nullopt;
Record.resize(RecordSize);
if (S_OK != StreamData->Item(Index, RecordSize, &RecordSize, &Record[0]))
return std::nullopt;
return Record;
}
bool DIADataStream::getNext(RecordType &Record) {
Record.clear();
DWORD RecordSize = 0;
ULONG CountFetched = 0;
StreamData->Next(1, 0, &RecordSize, nullptr, &CountFetched);
if (RecordSize == 0)
return false;
Record.resize(RecordSize);
if (S_OK ==
StreamData->Next(1, RecordSize, &RecordSize, &Record[0], &CountFetched))
return false;
return true;
}
void DIADataStream::reset() { StreamData->Reset(); }
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