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//===- DebugChecksumsSubsection.h -------------------------------*- 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
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_DEBUGINFO_CODEVIEW_DEBUGCHECKSUMSSUBSECTION_H
#define LLVM_DEBUGINFO_CODEVIEW_DEBUGCHECKSUMSSUBSECTION_H
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/DebugInfo/CodeView/CodeView.h"
#include "llvm/DebugInfo/CodeView/DebugSubsection.h"
#include "llvm/Support/Allocator.h"
#include "llvm/Support/BinaryStreamArray.h"
#include "llvm/Support/BinaryStreamRef.h"
#include "llvm/Support/Error.h"
#include <cstdint>
#include <vector>
namespace llvm {
class BinaryStreamReader;
class BinaryStreamWriter;
namespace codeview {
class DebugStringTableSubsection;
struct FileChecksumEntry {
uint32_t FileNameOffset; // Byte offset of filename in global stringtable.
FileChecksumKind Kind; // The type of checksum.
ArrayRef<uint8_t> Checksum; // The bytes of the checksum.
};
} // end namespace codeview
template <> struct VarStreamArrayExtractor<codeview::FileChecksumEntry> {
public:
using ContextType = void;
Error operator()(BinaryStreamRef Stream, uint32_t &Len,
codeview::FileChecksumEntry &Item);
};
namespace codeview {
class DebugChecksumsSubsectionRef final : public DebugSubsectionRef {
using FileChecksumArray = VarStreamArray<codeview::FileChecksumEntry>;
using Iterator = FileChecksumArray::Iterator;
public:
DebugChecksumsSubsectionRef()
: DebugSubsectionRef(DebugSubsectionKind::FileChecksums) {}
static bool classof(const DebugSubsectionRef *S) {
return S->kind() == DebugSubsectionKind::FileChecksums;
}
bool valid() const { return Checksums.valid(); }
Error initialize(BinaryStreamReader Reader);
Error initialize(BinaryStreamRef Stream);
Iterator begin() const { return Checksums.begin(); }
Iterator end() const { return Checksums.end(); }
const FileChecksumArray &getArray() const { return Checksums; }
private:
FileChecksumArray Checksums;
};
class DebugChecksumsSubsection final : public DebugSubsection {
public:
explicit DebugChecksumsSubsection(DebugStringTableSubsection &Strings);
static bool classof(const DebugSubsection *S) {
return S->kind() == DebugSubsectionKind::FileChecksums;
}
void addChecksum(StringRef FileName, FileChecksumKind Kind,
ArrayRef<uint8_t> Bytes);
uint32_t calculateSerializedSize() const override;
Error commit(BinaryStreamWriter &Writer) const override;
uint32_t mapChecksumOffset(StringRef FileName) const;
private:
DebugStringTableSubsection &Strings;
DenseMap<uint32_t, uint32_t> OffsetMap;
uint32_t SerializedSize = 0;
BumpPtrAllocator Storage;
std::vector<FileChecksumEntry> Checksums;
};
} // end namespace codeview
} // end namespace llvm
#endif // LLVM_DEBUGINFO_CODEVIEW_DEBUGCHECKSUMSSUBSECTION_H
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