1// Locale support -*- C++ -*-
2
3// Copyright (C) 2000, 2003, 2009 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 3, 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// Under Section 7 of GPL version 3, you are granted additional
17// permissions described in the GCC Runtime Library Exception, version
18// 3.1, as published by the Free Software Foundation.
19
20// You should have received a copy of the GNU General Public License and
21// a copy of the GCC Runtime Library Exception along with this program;
22// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
23// <http://www.gnu.org/licenses/>.
24
25/** @file ctype_inline.h
26 *  This is an internal header file, included by other library headers.
27 *  You should not attempt to use it directly.
28 */
29
30//
31// ISO C++ 14882: 22.1  Locales
32//
33
34// ctype bits to be inlined go here. Non-inlinable (ie virtual do_*)
35// functions go in ctype.cc
36
37// The following definitions are portable, but insanely slow. If one
38// cares at all about performance, then specialized ctype
39// functionality should be added for the native os in question: see
40// the config/os/bits/ctype_*.h files.
41
42// Constructing a synthetic "C" table should be seriously considered...
43
44_GLIBCXX_BEGIN_NAMESPACE(std)
45
46  bool
47  ctype<char>::
48  is(mask __m, char __c) const
49  {
50    if (_M_table)
51      return _M_table[static_cast<unsigned char>(__c)] & __m;
52    else
53      {
54	bool __ret = false;
55	const size_t __bitmasksize = 15;
56	size_t __bitcur = 0; // Lowest bitmask in ctype_base == 0
57	for (; __bitcur <= __bitmasksize; ++__bitcur)
58	  {
59	    const mask __bit = static_cast<mask>(1 << __bitcur);
60	    if (__m & __bit)
61	      {
62		bool __testis;
63		switch (__bit)
64		  {
65		  case space:
66		    __testis = isspace(__c);
67		    break;
68		  case print:
69		    __testis = isprint(__c);
70		    break;
71		  case cntrl:
72		    __testis = iscntrl(__c);
73		    break;
74		  case upper:
75		    __testis = isupper(__c);
76		    break;
77		  case lower:
78		    __testis = islower(__c);
79		    break;
80		  case alpha:
81		    __testis = isalpha(__c);
82		    break;
83		  case digit:
84		    __testis = isdigit(__c);
85		    break;
86		  case punct:
87		    __testis = ispunct(__c);
88		    break;
89		  case xdigit:
90		    __testis = isxdigit(__c);
91		    break;
92		  case alnum:
93		    __testis = isalnum(__c);
94		    break;
95		  case graph:
96		    __testis = isgraph(__c);
97		    break;
98		  default:
99		    __testis = false;
100		    break;
101		  }
102		__ret |= __testis;
103	      }
104	  }
105	return __ret;
106      }
107  }
108
109  const char*
110  ctype<char>::
111  is(const char* __low, const char* __high, mask* __vec) const
112  {
113    if (_M_table)
114      while (__low < __high)
115	*__vec++ = _M_table[static_cast<unsigned char>(*__low++)];
116    else
117      {
118	// Highest bitmask in ctype_base == 10.
119	const size_t __bitmasksize = 15;
120	for (;__low < __high; ++__vec, ++__low)
121	  {
122	    mask __m = 0;
123	    // Lowest bitmask in ctype_base == 0
124	    size_t __i = 0;
125	    for (;__i <= __bitmasksize; ++__i)
126	      {
127		const mask __bit = static_cast<mask>(1 << __i);
128		if (this->is(__bit, *__low))
129		  __m |= __bit;
130	      }
131	    *__vec = __m;
132	  }
133      }
134    return __high;
135  }
136
137  const char*
138  ctype<char>::
139  scan_is(mask __m, const char* __low, const char* __high) const
140  {
141    if (_M_table)
142      while (__low < __high
143	     && !(_M_table[static_cast<unsigned char>(*__low)] & __m))
144	++__low;
145    else
146      while (__low < __high && !this->is(__m, *__low))
147	++__low;
148    return __low;
149  }
150
151  const char*
152  ctype<char>::
153  scan_not(mask __m, const char* __low, const char* __high) const
154  {
155    if (_M_table)
156      while (__low < __high
157	     && (_M_table[static_cast<unsigned char>(*__low)] & __m) != 0)
158	++__low;
159    else
160      while (__low < __high && this->is(__m, *__low) != 0)
161	++__low;
162    return __low;
163  }
164
165_GLIBCXX_END_NAMESPACE
166