// Copyright (c) 1994 James Clark

// See the file COPYING for copying permission.

#ifndef StringSet_INCLUDED

#define StringSet_INCLUDED 1

#include "StringC.h"

#include "Hash.h"

#include "Boolean.h"

#include "OwnerTable.h"

#ifdef SP_NAMESPACE

namespace SP_NAMESPACE {

#endif

class StringSetKey {

public:

  static inline const StringC &key(const StringC &str) { return str; }

};

class StringSet {

public:

  StringSet();

  Boolean add(const StringC &);	// return 1 if already there

  void swap(StringSet &);

  void clear();

private:

  StringSet(const StringSet &);	// undefined

  void operator=(const StringSet &); // undefined

  OwnerTable<StringC, StringC, Hash, StringSetKey> table_;

};

inline

void StringSet::clear()

{

  table_.clear();

}

#ifdef SP_NAMESPACE

}

#endif

#endif /* not StringSet_INCLUDED */