Coverage Report

Created: 2019-02-20 00:17

/Users/buildslave/jenkins/workspace/clang-stage2-coverage-R/llvm/include/llvm/MC/StringTableBuilder.h
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//===- StringTableBuilder.h - String table building utility -----*- 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_MC_STRINGTABLEBUILDER_H
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#define LLVM_MC_STRINGTABLEBUILDER_H
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#include "llvm/ADT/CachedHashString.h"
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/StringRef.h"
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#include <cstddef>
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#include <cstdint>
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namespace llvm {
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class raw_ostream;
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/// Utility for building string tables with deduplicated suffixes.
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class StringTableBuilder {
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public:
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  enum Kind { ELF, WinCOFF, MachO, RAW, DWARF };
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private:
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  DenseMap<CachedHashStringRef, size_t> StringIndexMap;
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  size_t Size = 0;
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  Kind K;
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  unsigned Alignment;
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  bool Finalized = false;
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  void finalizeStringTable(bool Optimize);
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  void initSize();
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public:
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  StringTableBuilder(Kind K, unsigned Alignment = 1);
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  ~StringTableBuilder();
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  /// Add a string to the builder. Returns the position of S in the
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  /// table. The position will be changed if finalize is used.
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  /// Can only be used before the table is finalized.
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  size_t add(CachedHashStringRef S);
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2.06M
  size_t add(StringRef S) { return add(CachedHashStringRef(S)); }
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  /// Analyze the strings and build the final table. No more strings can
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  /// be added after this point.
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  void finalize();
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  /// Finalize the string table without reording it. In this mode, offsets
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  /// returned by add will still be valid.
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  void finalizeInOrder();
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  /// Get the offest of a string in the string table. Can only be used
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  /// after the table is finalized.
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  size_t getOffset(CachedHashStringRef S) const;
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  size_t getOffset(StringRef S) const {
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1.97M
    return getOffset(CachedHashStringRef(S));
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  }
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849k
  size_t getSize() const { return Size; }
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  void clear();
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  void write(raw_ostream &OS) const;
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  void write(uint8_t *Buf) const;
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private:
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  bool isFinalized() const { return Finalized; }
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};
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} // end namespace llvm
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#endif // LLVM_MC_STRINGTABLEBUILDER_H