1// Locale support -*- C++ -*-
2
3// Copyright (C) 2000, 2002 Free Software Foundation, Inc.
4//
5// This file is part of the GNU ISO C++ Library.  This library is free
6// software; you can redistribute it and/or modify it under the
7// terms of the GNU General Public License as published by the
8// Free Software Foundation; either version 2, or (at your option)
9// any later version.
10
11// This library is distributed in the hope that it will be useful,
12// but WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14// GNU General Public License for more details.
15
16// You should have received a copy of the GNU General Public License along
17// with this library; see the file COPYING.  If not, write to the Free
18// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
19// USA.
20
21// As a special exception, you may use this file as part of a free software
22// library without restriction.  Specifically, if other files instantiate
23// templates or use macros or inline functions from this file, or you compile
24// this file and link it with other files to produce an executable, this
25// file does not by itself cause the resulting executable to be covered by
26// the GNU General Public License.  This exception does not however
27// invalidate any other reasons why the executable file might be covered by
28// the GNU General Public License.
29
30/** @file ctype_inline.h
31 *  This is an internal header file, included by other library headers.
32 *  You should not attempt to use it directly.
33 */
34
35//
36// ISO C++ 14882: 22.1  Locales
37//
38
39// ctype bits to be inlined go here. Non-inlinable (ie virtual do_*)
40// functions go in ctype.cc
41
42_GLIBCXX_BEGIN_NAMESPACE(std)
43
44  bool
45  ctype<char>::
46  is(mask __m, char __c) const
47  { return _M_table[static_cast<unsigned char>(__c)] & __m; }
48
49  const char*
50  ctype<char>::
51  is(const char* __low, const char* __high, mask* __vec) const
52  {
53    const int __bitmasksize = sizeof(mask) * 8;
54    for (;__low < __high; ++__vec, ++__low)
55      {
56	mask __m = _M_table[static_cast<unsigned char>(*__low)];
57	int __i = 0; // Lowest bitmask value from ctype_base.
58	while (__i < __bitmasksize && !(__m & static_cast<mask>(1 << __i)))
59	  ++__i;
60	*__vec = static_cast<mask>(1 << __i);
61      }
62    return __high;
63  }
64
65  const char*
66  ctype<char>::
67  scan_is(mask __m, const char* __low, const char* __high) const
68  {
69    while (__low < __high
70	   && !(_M_table[static_cast<unsigned char>(*__low)] & __m))
71      ++__low;
72    return __low;
73  }
74
75  const char*
76  ctype<char>::
77  scan_not(mask __m, const char* __low, const char* __high) const
78  {
79    while (__low < __high
80	   && (_M_table[static_cast<unsigned char>(*__low)] & __m) != 0)
81      ++__low;
82    return __low;
83  }
84
85_GLIBCXX_END_NAMESPACE
86