1 // class template regex -*- C++ -*-
2
3 // Copyright (C) 2010-2017 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 /**
26 * @file bits/regex_error.h
27 * @brief Error and exception objects for the std regex library.
28 *
29 * This is an internal header file, included by other library headers.
30 * Do not attempt to use it directly. @headername{regex}
31 */
32
_GLIBCXX_VISIBILITY(default)33 namespace std _GLIBCXX_VISIBILITY(default)
34 {
35 /**
36 * @addtogroup regex
37 * @{
38 */
39
40 namespace regex_constants
41 {
42 _GLIBCXX_BEGIN_NAMESPACE_VERSION
43
44 /**
45 * @name 5.3 Error Types
46 */
47 //@{
48
49 enum error_type
50 {
51 _S_error_collate,
52 _S_error_ctype,
53 _S_error_escape,
54 _S_error_backref,
55 _S_error_brack,
56 _S_error_paren,
57 _S_error_brace,
58 _S_error_badbrace,
59 _S_error_range,
60 _S_error_space,
61 _S_error_badrepeat,
62 _S_error_complexity,
63 _S_error_stack,
64 };
65
66 /** The expression contained an invalid collating element name. */
67 constexpr error_type error_collate(_S_error_collate);
68
69 /** The expression contained an invalid character class name. */
70 constexpr error_type error_ctype(_S_error_ctype);
71
72 /**
73 * The expression contained an invalid escaped character, or a trailing
74 * escape.
75 */
76 constexpr error_type error_escape(_S_error_escape);
77
78 /** The expression contained an invalid back reference. */
79 constexpr error_type error_backref(_S_error_backref);
80
81 /** The expression contained mismatched [ and ]. */
82 constexpr error_type error_brack(_S_error_brack);
83
84 /** The expression contained mismatched ( and ). */
85 constexpr error_type error_paren(_S_error_paren);
86
87 /** The expression contained mismatched { and } */
88 constexpr error_type error_brace(_S_error_brace);
89
90 /** The expression contained an invalid range in a {} expression. */
91 constexpr error_type error_badbrace(_S_error_badbrace);
92
93 /**
94 * The expression contained an invalid character range,
95 * such as [b-a] in most encodings.
96 */
97 constexpr error_type error_range(_S_error_range);
98
99 /**
100 * There was insufficient memory to convert the expression into a
101 * finite state machine.
102 */
103 constexpr error_type error_space(_S_error_space);
104
105 /**
106 * One of <em>*?+{</em> was not preceded by a valid regular expression.
107 */
108 constexpr error_type error_badrepeat(_S_error_badrepeat);
109
110 /**
111 * The complexity of an attempted match against a regular expression
112 * exceeded a pre-set level.
113 */
114 constexpr error_type error_complexity(_S_error_complexity);
115
116 /**
117 * There was insufficient memory to determine whether the
118 * regular expression could match the specified character sequence.
119 */
120 constexpr error_type error_stack(_S_error_stack);
121
122 //@}
123 _GLIBCXX_END_NAMESPACE_VERSION
124 } // namespace regex_constants
125
126 _GLIBCXX_BEGIN_NAMESPACE_VERSION
127
128 // [7.8] Class regex_error
129 /**
130 * @brief A regular expression exception class.
131 * @ingroup exceptions
132 *
133 * The regular expression library throws objects of this class on error.
134 */
135 class regex_error : public std::runtime_error
136 {
137 regex_constants::error_type _M_code;
138
139 public:
140 /**
141 * @brief Constructs a regex_error object.
142 *
143 * @param __ecode the regex error code.
144 */
145 explicit
146 regex_error(regex_constants::error_type __ecode);
147
148 virtual ~regex_error() throw();
149
150 /**
151 * @brief Gets the regex error code.
152 *
153 * @returns the regex error code.
154 */
155 regex_constants::error_type
156 code() const
157 { return _M_code; }
158
159 private:
160 regex_error(regex_constants::error_type __ecode, const char* __what)
161 : std::runtime_error(__what), _M_code(__ecode)
162 { }
163
164 friend void __throw_regex_error(regex_constants::error_type, const char*);
165 };
166
167 //@} // group regex
168
169 void
170 __throw_regex_error(regex_constants::error_type __ecode);
171
172 inline void
173 __throw_regex_error(regex_constants::error_type __ecode, const char* __what)
174 { _GLIBCXX_THROW_OR_ABORT(regex_error(__ecode, __what)); }
175
176 _GLIBCXX_END_NAMESPACE_VERSION
177 } // namespace std
178