1// Locale support -*- C++ -*-
2
3// Copyright (C) 2000-2015 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 bits/ctype_inline.h
26 *  This is an internal header file, included by other library headers.
27 *  Do not attempt to use it directly. @headername{locale}
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
44namespace std _GLIBCXX_VISIBILITY(default)
45{
46_GLIBCXX_BEGIN_NAMESPACE_VERSION
47
48  bool
49  ctype<char>::
50  is(mask __m, char __c) const
51  {
52    if (_M_table)
53      return _M_table[static_cast<unsigned char>(__c)] & __m;
54    else
55      {
56	bool __ret = false;
57	const size_t __bitmasksize = 15;
58	size_t __bitcur = 0; // Lowest bitmask in ctype_base == 0
59	for (; __bitcur <= __bitmasksize; ++__bitcur)
60	  {
61	    const mask __bit = static_cast<mask>(1 << __bitcur);
62	    if (__m & __bit)
63	      {
64		bool __testis;
65		switch (__bit)
66		  {
67		  case space:
68		    __testis = isspace(__c);
69		    break;
70		  case print:
71		    __testis = isprint(__c);
72		    break;
73		  case cntrl:
74		    __testis = iscntrl(__c);
75		    break;
76		  case upper:
77		    __testis = isupper(__c);
78		    break;
79		  case lower:
80		    __testis = islower(__c);
81		    break;
82		  case alpha:
83		    __testis = isalpha(__c);
84		    break;
85		  case digit:
86		    __testis = isdigit(__c);
87		    break;
88		  case punct:
89		    __testis = ispunct(__c);
90		    break;
91		  case xdigit:
92		    __testis = isxdigit(__c);
93		    break;
94		  case alnum:
95		    __testis = isalnum(__c);
96		    break;
97		  case graph:
98		    __testis = isgraph(__c);
99		    break;
100#ifdef _GLIBCXX_USE_C99_CTYPE_TR1
101		  case blank:
102		    __testis = isblank(__c);
103		    break;
104#endif
105		  default:
106		    __testis = false;
107		    break;
108		  }
109		__ret |= __testis;
110	      }
111	  }
112	return __ret;
113      }
114  }
115
116  const char*
117  ctype<char>::
118  is(const char* __low, const char* __high, mask* __vec) const
119  {
120    if (_M_table)
121      while (__low < __high)
122	*__vec++ = _M_table[static_cast<unsigned char>(*__low++)];
123    else
124      {
125	// Highest bitmask in ctype_base == 11.
126	const size_t __bitmasksize = 15;
127	for (;__low < __high; ++__vec, ++__low)
128	  {
129	    mask __m = 0;
130	    // Lowest bitmask in ctype_base == 0
131	    size_t __i = 0;
132	    for (;__i <= __bitmasksize; ++__i)
133	      {
134		const mask __bit = static_cast<mask>(1 << __i);
135		if (this->is(__bit, *__low))
136		  __m |= __bit;
137	      }
138	    *__vec = __m;
139	  }
140      }
141    return __high;
142  }
143
144  const char*
145  ctype<char>::
146  scan_is(mask __m, const char* __low, const char* __high) const
147  {
148    if (_M_table)
149      while (__low < __high
150	     && !(_M_table[static_cast<unsigned char>(*__low)] & __m))
151	++__low;
152    else
153      while (__low < __high && !this->is(__m, *__low))
154	++__low;
155    return __low;
156  }
157
158  const char*
159  ctype<char>::
160  scan_not(mask __m, const char* __low, const char* __high) const
161  {
162    if (_M_table)
163      while (__low < __high
164	     && (_M_table[static_cast<unsigned char>(*__low)] & __m) != 0)
165	++__low;
166    else
167      while (__low < __high && this->is(__m, *__low) != 0)
168	++__low;
169    return __low;
170  }
171
172_GLIBCXX_END_NAMESPACE_VERSION
173} // namespace
174