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8652898f9b
In preparation for introducing writing capabilities for each of these classes, I would like to adopt a Foo / FooRef naming convention, where Foo indicates that the class can manipulate and serialize Foos, and FooRef indicates that it is an immutable view of an existing Foo. In other words, Foo is a writer and FooRef is a reader. This patch names some existing readers to conform to the FooRef convention, while offering no functional change. llvm-svn: 301810
90 lines
3.0 KiB
C++
90 lines
3.0 KiB
C++
//===- ModuleDebugStream.cpp - PDB Module Info Stream Access --------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/DebugInfo/PDB/Native/ModuleDebugStream.h"
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#include "llvm/ADT/iterator_range.h"
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#include "llvm/DebugInfo/CodeView/SymbolRecord.h"
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#include "llvm/DebugInfo/PDB/Native/DbiModuleDescriptor.h"
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#include "llvm/DebugInfo/PDB/Native/PDBFile.h"
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#include "llvm/DebugInfo/PDB/Native/RawError.h"
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#include "llvm/DebugInfo/PDB/Native/RawTypes.h"
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#include "llvm/Support/BinaryStreamReader.h"
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#include "llvm/Support/BinaryStreamRef.h"
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#include "llvm/Support/Error.h"
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#include <algorithm>
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#include <cstdint>
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using namespace llvm;
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using namespace llvm::codeview;
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using namespace llvm::msf;
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using namespace llvm::pdb;
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ModuleDebugStreamRef::ModuleDebugStreamRef(
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const DbiModuleDescriptor &Module,
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std::unique_ptr<MappedBlockStream> Stream)
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: Mod(Module), Stream(std::move(Stream)) {}
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ModuleDebugStreamRef::~ModuleDebugStreamRef() = default;
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Error ModuleDebugStreamRef::reload() {
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BinaryStreamReader Reader(*Stream);
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uint32_t SymbolSize = Mod.getSymbolDebugInfoByteSize();
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uint32_t C11Size = Mod.getC11LineInfoByteSize();
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uint32_t C13Size = Mod.getC13LineInfoByteSize();
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if (C11Size > 0 && C13Size > 0)
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return make_error<RawError>(raw_error_code::corrupt_file,
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"Module has both C11 and C13 line info");
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BinaryStreamRef S;
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if (auto EC = Reader.readInteger(Signature))
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return EC;
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if (auto EC = Reader.readArray(SymbolsSubstream, SymbolSize - 4))
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return EC;
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if (auto EC = Reader.readStreamRef(C11LinesSubstream, C11Size))
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return EC;
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if (auto EC = Reader.readStreamRef(C13LinesSubstream, C13Size))
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return EC;
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BinaryStreamReader LineReader(C13LinesSubstream);
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if (auto EC =
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LineReader.readArray(LinesAndChecksums, LineReader.bytesRemaining()))
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return EC;
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uint32_t GlobalRefsSize;
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if (auto EC = Reader.readInteger(GlobalRefsSize))
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return EC;
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if (auto EC = Reader.readStreamRef(GlobalRefsSubstream, GlobalRefsSize))
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return EC;
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if (Reader.bytesRemaining() > 0)
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return make_error<RawError>(raw_error_code::corrupt_file,
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"Unexpected bytes in module stream.");
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return Error::success();
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}
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iterator_range<codeview::CVSymbolArray::Iterator>
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ModuleDebugStreamRef::symbols(bool *HadError) const {
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return make_range(SymbolsSubstream.begin(HadError), SymbolsSubstream.end());
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}
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llvm::iterator_range<ModuleDebugStreamRef::LinesAndChecksumsIterator>
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ModuleDebugStreamRef::linesAndChecksums() const {
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return make_range(LinesAndChecksums.begin(), LinesAndChecksums.end());
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}
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bool ModuleDebugStreamRef::hasLineInfo() const {
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return C13LinesSubstream.getLength() > 0;
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}
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Error ModuleDebugStreamRef::commit() { return Error::success(); }
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