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//===- NamedStreamMap.h - PDB Named Stream Map ------------------*- 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_PDB_NATIVE_NAMEDSTREAMMAP_H
#define LLVM_DEBUGINFO_PDB_NATIVE_NAMEDSTREAMMAP_H
#include "llvm/ADT/StringMap.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/DebugInfo/PDB/Native/HashTable.h"
#include "llvm/Support/Error.h"
#include <cstdint>
namespace llvm {
class BinaryStreamReader;
class BinaryStreamWriter;
namespace pdb {
class NamedStreamMap;
struct NamedStreamMapTraits {
NamedStreamMap *NS;
explicit NamedStreamMapTraits(NamedStreamMap &NS);
uint16_t hashLookupKey(StringRef S) const;
StringRef storageKeyToLookupKey(uint32_t Offset) const;
uint32_t lookupKeyToStorageKey(StringRef S);
};
class NamedStreamMap {
friend class NamedStreamMapBuilder;
public:
NamedStreamMap();
Error load(BinaryStreamReader &Stream);
Error commit(BinaryStreamWriter &Writer) const;
uint32_t calculateSerializedLength() const;
uint32_t size() const;
bool get(StringRef Stream, uint32_t &StreamNo) const;
void set(StringRef Stream, uint32_t StreamNo);
uint32_t appendStringData(StringRef S);
StringRef getString(uint32_t Offset) const;
uint32_t hashString(uint32_t Offset) const;
StringMap<uint32_t> entries() const;
private:
NamedStreamMapTraits HashTraits;
/// Closed hash table from Offset -> StreamNumber, where Offset is the offset
/// of the stream name in NamesBuffer.
HashTable<support::ulittle32_t> OffsetIndexMap;
/// Buffer of string data.
std::vector<char> NamesBuffer;
};
} // end namespace pdb
} // end namespace llvm
#endif // LLVM_DEBUGINFO_PDB_NATIVE_NAMEDSTREAMMAP_H
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