1// class template regex -*- C++ -*-
2
3// Copyright (C) 2010-2018 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
33namespace std _GLIBCXX_VISIBILITY(default)
34{
35_GLIBCXX_BEGIN_NAMESPACE_VERSION
36
37/**
38 * @addtogroup regex
39 * @{
40 */
41
42namespace regex_constants
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} // namespace regex_constants
124
125 // [7.8] Class regex_error
126 /**
127 * @brief A regular expression exception class.
128 * @ingroup exceptions
129 *
130 * The regular expression library throws objects of this class on error.
131 */
132 class regex_error : public std::runtime_error
133 {
134 regex_constants::error_type _M_code;
135
136 public:
137 /**
138 * @brief Constructs a regex_error object.
139 *
140 * @param __ecode the regex error code.
141 */
142 explicit
143 regex_error(regex_constants::error_type __ecode);
144
145 virtual ~regex_error() throw();
146
147 /**
148 * @brief Gets the regex error code.
149 *
150 * @returns the regex error code.
151 */
152 regex_constants::error_type
153 code() const
154 { return _M_code; }
155
156 private:
157 regex_error(regex_constants::error_type __ecode, const char* __what)
158 : std::runtime_error(__what), _M_code(__ecode)
159 { }
160
161 friend void __throw_regex_error(regex_constants::error_type, const char*);
162 };
163
164 //@} // group regex
165
166 void
167 __throw_regex_error(regex_constants::error_type __ecode);
168
169 inline void
170 __throw_regex_error(regex_constants::error_type __ecode, const char* __what)
171 { _GLIBCXX_THROW_OR_ABORT(regex_error(__ecode, __what)); }
172
173_GLIBCXX_END_NAMESPACE_VERSION
174} // namespace std
175