include/stlport/stl/_ctraits_fns.h

   1 /*
   2  * Copyright (c) 1999
   3  * Silicon Graphics Computer Systems, Inc.
   4  *
   5  * Permission to use, copy, modify, distribute and sell this software
   6  * and its documentation for any purpose is hereby granted without fee,
   7  * provided that the above copyright notice appear in all copies and
   8  * that both that copyright notice and this permission notice appear
   9  * in supporting documentation.  Silicon Graphics makes no
  10  * representations about the suitability of this software for any
  11  * purpose.  It is provided "as is" without express or implied warranty.
  12  */
  13
  14 // WARNING: This is an internal header file, included by other C++
  15 // standard library headers.  You should not attempt to use this header
  16 // file directly.
  17
  18 #ifndef _STLP_INTERNAL_CTRAITS_FUNCTIONS_H
  19 #define _STLP_INTERNAL_CTRAITS_FUNCTIONS_H
  20
  21 #ifndef _STLP_INTERNAL_FUNCTION_BASE_H
  22 #  include <stl/_function_base.h>
  23 #endif
  24
  25 // This file contains a few small adapters that allow a character
  26 // traits class to be used as a function object.
  27
  28 _STLP_BEGIN_NAMESPACE
  29
  30 _STLP_MOVE_TO_PRIV_NAMESPACE
  31
  32 template <class _Traits>
  33 struct _Eq_traits
  34   : public binary_function<typename _Traits::char_type,
  35                            typename _Traits::char_type,
  36                            bool> {
  37   bool operator()(const typename _Traits::char_type& __x,
  38                   const typename _Traits::char_type& __y) const
  39   { return _Traits::eq(__x, __y); }
  40 };
  41
  42 template <class _Traits>
  43 struct _Eq_char_bound
  44   : public unary_function<typename _Traits::char_type, bool> {
  45   typename _Traits::char_type __val;
  46   _Eq_char_bound(typename _Traits::char_type __c) : __val(__c) {}
  47   bool operator()(const typename _Traits::char_type& __x) const
  48   { return _Traits::eq(__x, __val); }
  49 };
  50
  51 template <class _Traits>
  52 struct _Neq_char_bound
  53   : public unary_function<typename _Traits::char_type, bool>
  54 {
  55   typename _Traits::char_type __val;
  56   _Neq_char_bound(typename _Traits::char_type __c) : __val(__c) {}
  57   bool operator()(const typename _Traits::char_type& __x) const
  58   { return !_Traits::eq(__x, __val); }
  59 };
  60
  61 template <class _Traits>
  62 struct _Eq_int_bound
  63   : public unary_function<typename _Traits::char_type, bool> {
  64   typename _Traits::int_type __val;
  65
  66   _Eq_int_bound(typename _Traits::int_type __c) : __val(__c) {}
  67   bool operator()(const typename _Traits::char_type& __x) const
  68   { return _Traits::eq_int_type(_Traits::to_int_type(__x), __val); }
  69 };
  70
  71 #if 0
  72 template <class _Traits>
  73 struct _Lt_traits
  74   : public binary_function<typename _Traits::char_type,
  75                            typename _Traits::char_type,
  76                            bool> {
  77   bool operator()(const typename _Traits::char_type& __x,
  78                   const typename _Traits::char_type& __y) const
  79   { return _Traits::lt(__x, __y); }
  80 };
  81 #endif
  82
  83 _STLP_MOVE_TO_STD_NAMESPACE
  84
  85 _STLP_END_NAMESPACE
  86
  87 #endif /* _STLP_INTERNAL_CTRAITS_FUNCTIONS_H */
  88
  89 // Local Variables:
  90 // mode:C++
  91 // End: