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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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351636 91177308-0d34-0410-b5e6-96231b3b80d8
107 lines
3.9 KiB
C++
107 lines
3.9 KiB
C++
//===- StringsAndChecksums.h ------------------------------------*- 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_STRINGSANDCHECKSUMS_H
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#define LLVM_DEBUGINFO_CODEVIEW_STRINGSANDCHECKSUMS_H
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#include "llvm/DebugInfo/CodeView/CodeView.h"
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#include "llvm/DebugInfo/CodeView/DebugChecksumsSubsection.h"
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#include "llvm/DebugInfo/CodeView/DebugStringTableSubsection.h"
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#include "llvm/DebugInfo/CodeView/DebugSubsectionRecord.h"
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#include <memory>
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namespace llvm {
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namespace codeview {
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class StringsAndChecksumsRef {
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public:
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// If no subsections are known about initially, we find as much as we can.
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StringsAndChecksumsRef();
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// If only a string table subsection is given, we find a checksums subsection.
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explicit StringsAndChecksumsRef(const DebugStringTableSubsectionRef &Strings);
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// If both subsections are given, we don't need to find anything.
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StringsAndChecksumsRef(const DebugStringTableSubsectionRef &Strings,
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const DebugChecksumsSubsectionRef &Checksums);
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void setStrings(const DebugStringTableSubsectionRef &Strings);
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void setChecksums(const DebugChecksumsSubsectionRef &CS);
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void reset();
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void resetStrings();
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void resetChecksums();
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template <typename T> void initialize(T &&FragmentRange) {
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for (const DebugSubsectionRecord &R : FragmentRange) {
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if (Strings && Checksums)
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return;
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if (R.kind() == DebugSubsectionKind::FileChecksums) {
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initializeChecksums(R);
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continue;
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}
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if (R.kind() == DebugSubsectionKind::StringTable && !Strings) {
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// While in practice we should never encounter a string table even
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// though the string table is already initialized, in theory it's
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// possible. PDBs are supposed to have one global string table and
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// then this subsection should not appear. Whereas object files are
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// supposed to have this subsection appear exactly once. However,
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// for testing purposes it's nice to be able to test this subsection
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// independently of one format or the other, so for some tests we
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// manually construct a PDB that contains this subsection in addition
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// to a global string table.
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initializeStrings(R);
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continue;
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}
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}
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}
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const DebugStringTableSubsectionRef &strings() const { return *Strings; }
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const DebugChecksumsSubsectionRef &checksums() const { return *Checksums; }
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bool hasStrings() const { return Strings != nullptr; }
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bool hasChecksums() const { return Checksums != nullptr; }
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private:
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void initializeStrings(const DebugSubsectionRecord &SR);
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void initializeChecksums(const DebugSubsectionRecord &FCR);
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std::shared_ptr<DebugStringTableSubsectionRef> OwnedStrings;
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std::shared_ptr<DebugChecksumsSubsectionRef> OwnedChecksums;
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const DebugStringTableSubsectionRef *Strings = nullptr;
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const DebugChecksumsSubsectionRef *Checksums = nullptr;
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};
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class StringsAndChecksums {
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public:
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using StringsPtr = std::shared_ptr<DebugStringTableSubsection>;
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using ChecksumsPtr = std::shared_ptr<DebugChecksumsSubsection>;
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// If no subsections are known about initially, we find as much as we can.
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StringsAndChecksums() = default;
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void setStrings(const StringsPtr &SP) { Strings = SP; }
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void setChecksums(const ChecksumsPtr &CP) { Checksums = CP; }
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const StringsPtr &strings() const { return Strings; }
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const ChecksumsPtr &checksums() const { return Checksums; }
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bool hasStrings() const { return Strings != nullptr; }
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bool hasChecksums() const { return Checksums != nullptr; }
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private:
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StringsPtr Strings;
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ChecksumsPtr Checksums;
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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_STRINGSANDCHECKSUMS_H
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