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