1 _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_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 template <class _Traits>

    31 struct _Eq_traits

    32   : public binary_function<typename _Traits::char_type,

    33                            typename _Traits::char_type,

    34                            bool>

    35 {

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

    37                   const typename _Traits::char_type& __y) const

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

    39 };

    40 

    41 template <class _Traits>

    42 struct _Eq_char_bound

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

    44 {

    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 {

    65   typename _Traits::int_type __val;

    66 

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

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

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

    70 };

    71 

    72 # if 0

    73 template <class _Traits>

    74 struct _Lt_traits

    75   : public binary_function<typename _Traits::char_type,

    76                            typename _Traits::char_type,

    77                            bool>

    78 {

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

    80                   const typename _Traits::char_type& __y) const

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

    82 };

    83 # endif

    84 

    85 _STLP_END_NAMESPACE

    86 

    87 #endif /* _STLP_INTERNAL_CTRAITS_FUNCTIONS_H */

    88 

    89 // Local Variables:

    90 // mode:C++

    91 // End:

    92 

    93 

    94 

    95