//===- llvm/CodeGen/DwarfStringPoolEntry.h - String pool entry --*- C++ -*-===//

//

//                     The LLVM Compiler Infrastructure

//

// This file is distributed under the University of Illinois Open Source

// License. See LICENSE.TXT for details.

//

//===----------------------------------------------------------------------===//

#ifndef LLVM_CODEGEN_DWARFSTRINGPOOLENTRY_H

#define LLVM_CODEGEN_DWARFSTRINGPOOLENTRY_H

#include "llvm/ADT/StringMap.h"

namespace llvm {

class MCSymbol;

/// Data for a string pool entry.

struct DwarfStringPoolEntry {

  MCSymbol *Symbol;

  unsigned Offset;

  unsigned Index;

};

/// String pool entry reference.

struct DwarfStringPoolEntryRef {

  const StringMapEntry<DwarfStringPoolEntry> *I = nullptr;

public:

  DwarfStringPoolEntryRef() = default;

  explicit DwarfStringPoolEntryRef(

      const StringMapEntry<DwarfStringPoolEntry> &I)

      : I(&I) {}

  explicit operator bool() const { return I; }

  MCSymbol *getSymbol() const {

    assert(I->second.Symbol && "No symbol available!");

    return I->second.Symbol;

  }

  unsigned getOffset() const { return I->second.Offset; }

  unsigned getIndex() const { return I->second.Index; }

  StringRef getString() const { return I->first(); }

  /// Return the entire string pool entry for convenience.

  DwarfStringPoolEntry getEntry() const { return I->getValue(); }

  bool operator==(const DwarfStringPoolEntryRef &X) const { return I == X.I; }

  bool operator!=(const DwarfStringPoolEntryRef &X) const { return I != X.I; }

};

} // end namespace llvm

#endif