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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
97 lines
2.9 KiB
C++
97 lines
2.9 KiB
C++
//===- DebugStringTableSubsection.h - CodeView String Table -----*- 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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#ifndef LLVM_DEBUGINFO_CODEVIEW_DEBUGSTRINGTABLESUBSECTION_H
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#define LLVM_DEBUGINFO_CODEVIEW_DEBUGSTRINGTABLESUBSECTION_H
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/StringMap.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/DebugInfo/CodeView/CodeView.h"
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#include "llvm/DebugInfo/CodeView/DebugSubsection.h"
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#include "llvm/Support/BinaryStreamRef.h"
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#include "llvm/Support/Error.h"
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#include <cstdint>
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namespace llvm {
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class BinaryStreamReader;
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namespace codeview {
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/// Represents a read-only view of a CodeView string table. This is a very
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/// simple flat buffer consisting of null-terminated strings, where strings
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/// are retrieved by their offset in the buffer. DebugStringTableSubsectionRef
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/// does not own the underlying storage for the buffer.
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class DebugStringTableSubsectionRef : public DebugSubsectionRef {
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public:
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DebugStringTableSubsectionRef();
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static bool classof(const DebugSubsectionRef *S) {
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return S->kind() == DebugSubsectionKind::StringTable;
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}
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Error initialize(BinaryStreamRef Contents);
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Error initialize(BinaryStreamReader &Reader);
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Expected<StringRef> getString(uint32_t Offset) const;
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bool valid() const { return Stream.valid(); }
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BinaryStreamRef getBuffer() const { return Stream; }
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private:
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BinaryStreamRef Stream;
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};
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/// Represents a read-write view of a CodeView string table.
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/// DebugStringTableSubsection owns the underlying storage for the table, and is
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/// capable of serializing the string table into a format understood by
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/// DebugStringTableSubsectionRef.
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class DebugStringTableSubsection : public DebugSubsection {
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public:
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DebugStringTableSubsection();
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static bool classof(const DebugSubsection *S) {
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return S->kind() == DebugSubsectionKind::StringTable;
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}
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// If string S does not exist in the string table, insert it.
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// Returns the ID for S.
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uint32_t insert(StringRef S);
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// Return the ID for string S. Assumes S exists in the table.
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uint32_t getIdForString(StringRef S) const;
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StringRef getStringForId(uint32_t Id) const;
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uint32_t calculateSerializedSize() const override;
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Error commit(BinaryStreamWriter &Writer) const override;
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uint32_t size() const;
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StringMap<uint32_t>::const_iterator begin() const {
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return StringToId.begin();
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}
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StringMap<uint32_t>::const_iterator end() const { return StringToId.end(); }
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std::vector<uint32_t> sortedIds() const;
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private:
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DenseMap<uint32_t, StringRef> IdToString;
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StringMap<uint32_t> StringToId;
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uint32_t StringSize = 1;
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};
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} // end namespace codeview
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} // end namespace llvm
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#endif // LLVM_DEBUGINFO_CODEVIEW_DEBUGSTRINGTABLESUBSECTION_H
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