1 | /////////////////////////////////////////////////////////////////////////////// |
2 | /// \file regex_error.hpp |
3 | /// Contains the definition of the regex_error exception class. |
4 | // |
5 | // Copyright 2008 Eric Niebler. Distributed under the Boost |
6 | // Software License, Version 1.0. (See accompanying file |
7 | // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
8 | |
9 | #ifndef BOOST_XPRESSIVE_REGEX_ERROR_HPP_EAN_10_04_2005 |
10 | #define BOOST_XPRESSIVE_REGEX_ERROR_HPP_EAN_10_04_2005 |
11 | |
12 | // MS compatible compilers support #pragma once |
13 | #if defined(_MSC_VER) |
14 | # pragma once |
15 | #endif |
16 | |
17 | #include <string> |
18 | #include <stdexcept> |
19 | #include <boost/throw_exception.hpp> |
20 | #include <boost/current_function.hpp> |
21 | #include <boost/exception/exception.hpp> |
22 | #include <boost/exception/info.hpp> |
23 | #include <boost/xpressive/regex_constants.hpp> |
24 | |
25 | //{{AFX_DOC_COMMENT |
26 | /////////////////////////////////////////////////////////////////////////////// |
27 | // This is a hack to get Doxygen to show the inheritance relation between |
28 | // regex_error and std::runtime_error. |
29 | #ifdef BOOST_XPRESSIVE_DOXYGEN_INVOKED |
30 | /// INTERNAL ONLY |
31 | namespace std |
32 | { |
33 | /// INTERNAL ONLY |
34 | struct runtime_error {}; |
35 | } |
36 | #endif |
37 | //}}AFX_DOC_COMMENT |
38 | |
39 | namespace boost { namespace xpressive |
40 | { |
41 | |
42 | //////////////////////////////////////////////////////////////////////////////// |
43 | // regex_error |
44 | // |
45 | /// \brief The class regex_error defines the type of objects thrown as |
46 | /// exceptions to report errors during the conversion from a string representing |
47 | /// a regular expression to a finite state machine. |
48 | struct regex_error |
49 | : std::runtime_error |
50 | , boost::exception |
51 | { |
52 | /// Constructs an object of class regex_error. |
53 | /// \param code The error_type this regex_error represents. |
54 | /// \param str The message string of this regex_error. |
55 | /// \post code() == code |
56 | explicit regex_error(regex_constants::error_type code, char const *str = "" ) |
57 | : std::runtime_error(str) |
58 | , boost::exception() |
59 | , code_(code) |
60 | { |
61 | } |
62 | |
63 | /// Accessor for the error_type value |
64 | /// \return the error_type code passed to the constructor |
65 | /// \throw nothrow |
66 | regex_constants::error_type code() const |
67 | { |
68 | return this->code_; |
69 | } |
70 | |
71 | /// Destructor for class regex_error |
72 | /// \throw nothrow |
73 | virtual ~regex_error() throw() |
74 | {} |
75 | |
76 | private: |
77 | |
78 | regex_constants::error_type code_; |
79 | }; |
80 | |
81 | namespace detail |
82 | { |
83 | inline bool ensure_( |
84 | bool cond |
85 | , regex_constants::error_type code |
86 | , char const *msg |
87 | , char const *fun |
88 | , char const *file |
89 | , unsigned long line |
90 | ) |
91 | { |
92 | if(!cond) |
93 | { |
94 | #ifndef BOOST_EXCEPTION_DISABLE |
95 | boost::throw_exception( |
96 | e: boost::xpressive::regex_error(code, msg) |
97 | << boost::throw_function(fun) |
98 | << boost::throw_file(file) |
99 | << boost::throw_line((int)line) |
100 | ); |
101 | #else |
102 | boost::throw_exception(boost::xpressive::regex_error(code, msg)); |
103 | #endif |
104 | } |
105 | return true; |
106 | } |
107 | } |
108 | |
109 | #define BOOST_XPR_ENSURE_(pred, code, msg) \ |
110 | boost::xpressive::detail::ensure_(!!(pred), code, msg, BOOST_CURRENT_FUNCTION, __FILE__, __LINE__) \ |
111 | /**/ |
112 | |
113 | }} // namespace boost::xpressive |
114 | |
115 | #endif |
116 | |