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