/*

 * Copyright (c) 1999

 * Silicon Graphics Computer Systems, Inc.

 *

 * Permission to use, copy, modify, distribute and sell this software

 * and its documentation for any purpose is hereby granted without fee,

 * provided that the above copyright notice appear in all copies and

 * that both that copyright notice and this permission notice appear

 * in supporting documentation.  Silicon Graphics makes no

 * representations about the suitability of this software for any

 * purpose.  It is provided "as is" without express or implied warranty.

 */

// WARNING: This is an internal header file, included by other C++

// standard library headers.  You should not attempt to use this header

// file directly.

#ifndef _STLP_INTERNAL_CTRAITS_FUNCTIONS_H

#define _STLP_INTERNAL_CTRAITS_FUNCTIONS_H

#ifndef _STLP_INTERNAL_FUNCTION_BASE_H

#  include <stl/_function_base.h>

#endif

// This file contains a few small adapters that allow a character

// traits class to be used as a function object.

_STLP_BEGIN_NAMESPACE

_STLP_MOVE_TO_PRIV_NAMESPACE

template <class _Traits>

struct _Eq_traits

  : public binary_function<typename _Traits::char_type,

                           typename _Traits::char_type,

                           bool> {

  bool operator()(const typename _Traits::char_type& __x,

                  const typename _Traits::char_type& __y) const

  { return _Traits::eq(__x, __y); }

};

template <class _Traits>

struct _Eq_char_bound

  : public unary_function<typename _Traits::char_type, bool> {

  typename _Traits::char_type __val;

  _Eq_char_bound(typename _Traits::char_type __c) : __val(__c) {}

  bool operator()(const typename _Traits::char_type& __x) const

  { return _Traits::eq(__x, __val); }

};

template <class _Traits>

struct _Neq_char_bound

  : public unary_function<typename _Traits::char_type, bool>

{

  typename _Traits::char_type __val;

  _Neq_char_bound(typename _Traits::char_type __c) : __val(__c) {}

  bool operator()(const typename _Traits::char_type& __x) const

  { return !_Traits::eq(__x, __val); }

};

template <class _Traits>

struct _Eq_int_bound

  : public unary_function<typename _Traits::char_type, bool> {

  typename _Traits::int_type __val;

  _Eq_int_bound(typename _Traits::int_type __c) : __val(__c) {}

  bool operator()(const typename _Traits::char_type& __x) const

  { return _Traits::eq_int_type(_Traits::to_int_type(__x), __val); }

};

#if 0

template <class _Traits>

struct _Lt_traits

  : public binary_function<typename _Traits::char_type,

                           typename _Traits::char_type,

                           bool> {

  bool operator()(const typename _Traits::char_type& __x,

                  const typename _Traits::char_type& __y) const

  { return _Traits::lt(__x, __y); }

};

#endif

_STLP_MOVE_TO_STD_NAMESPACE

_STLP_END_NAMESPACE

#endif /* _STLP_INTERNAL_CTRAITS_FUNCTIONS_H */

// Local Variables:

// mode:C++

// End: