1#ifndef BOOST_THROW_EXCEPTION_HPP_INCLUDED
2#define BOOST_THROW_EXCEPTION_HPP_INCLUDED
3
4// MS compatible compilers support #pragma once
5
6#if defined(_MSC_VER) && (_MSC_VER >= 1020)
7# pragma once
8#endif
9
10// boost/throw_exception.hpp
11//
12// Copyright (c) 2002, 2018-2022 Peter Dimov
13// Copyright (c) 2008-2009 Emil Dotchevski and Reverge Studios, Inc.
14//
15// Distributed under the Boost Software License, Version 1.0. (See
16// accompanying file LICENSE_1_0.txt or copy at
17// http://www.boost.org/LICENSE_1_0.txt)
18//
19// http://www.boost.org/libs/throw_exception
20
21#include <boost/exception/exception.hpp>
22#include <boost/assert/source_location.hpp>
23#include <boost/config.hpp>
24#include <boost/config/workaround.hpp>
25#include <exception>
26#include <utility>
27#include <cstddef>
28#if !defined(BOOST_NO_CXX11_HDR_TYPE_TRAITS)
29#include <type_traits>
30#endif
31
32#if !defined( BOOST_EXCEPTION_DISABLE ) && defined( BOOST_BORLANDC ) && BOOST_WORKAROUND( BOOST_BORLANDC, BOOST_TESTED_AT(0x593) )
33# define BOOST_EXCEPTION_DISABLE
34#endif
35
36namespace boost
37{
38
39#if defined( BOOST_NO_EXCEPTIONS )
40
41BOOST_NORETURN void throw_exception( std::exception const & e ); // user defined
42BOOST_NORETURN void throw_exception( std::exception const & e, boost::source_location const & loc ); // user defined
43
44#endif
45
46// boost::wrapexcept<E>
47
48namespace detail
49{
50
51typedef char (&wrapexcept_s1)[ 1 ];
52typedef char (&wrapexcept_s2)[ 2 ];
53
54template<class T> wrapexcept_s1 wrapexcept_is_convertible( T* );
55template<class T> wrapexcept_s2 wrapexcept_is_convertible( void* );
56
57template<class E, class B, std::size_t I = sizeof( wrapexcept_is_convertible<B>( static_cast< E* >( BOOST_NULLPTR ) ) ) > struct wrapexcept_add_base;
58
59template<class E, class B> struct wrapexcept_add_base<E, B, 1>
60{
61 struct type {};
62};
63
64template<class E, class B> struct wrapexcept_add_base<E, B, 2>
65{
66 typedef B type;
67};
68
69} // namespace detail
70
71template<class E> struct BOOST_SYMBOL_VISIBLE wrapexcept:
72 public detail::wrapexcept_add_base<E, boost::exception_detail::clone_base>::type,
73 public E,
74 public detail::wrapexcept_add_base<E, boost::exception>::type
75{
76private:
77
78 struct deleter
79 {
80 wrapexcept * p_;
81 ~deleter() { delete p_; }
82 };
83
84private:
85
86 void copy_from( void const* )
87 {
88 }
89
90 void copy_from( boost::exception const* p )
91 {
92 static_cast<boost::exception&>( *this ) = *p;
93 }
94
95public:
96
97 explicit wrapexcept( E const & e ): E( e )
98 {
99 copy_from( &e );
100 }
101
102 explicit wrapexcept( E const & e, boost::source_location const & loc ): E( e )
103 {
104 copy_from( &e );
105
106 set_info( *this, throw_file( loc.file_name() ) );
107 set_info( *this, throw_line( static_cast<int>( loc.line() ) ) );
108 set_info( *this, throw_function( loc.function_name() ) );
109 set_info( *this, throw_column( static_cast<int>( loc.column() ) ) );
110 }
111
112 virtual boost::exception_detail::clone_base const * clone() const BOOST_OVERRIDE
113 {
114 wrapexcept * p = new wrapexcept( *this );
115 deleter del = { p };
116
117 boost::exception_detail::copy_boost_exception( p, this );
118
119 del.p_ = BOOST_NULLPTR;
120 return p;
121 }
122
123 virtual void rethrow() const BOOST_OVERRIDE
124 {
125#if defined( BOOST_NO_EXCEPTIONS )
126
127 boost::throw_exception( *this );
128
129#else
130
131 throw *this;
132
133#endif
134 }
135};
136
137// All boost exceptions are required to derive from std::exception,
138// to ensure compatibility with BOOST_NO_EXCEPTIONS.
139
140inline void throw_exception_assert_compatibility( std::exception const & ) {}
141
142// boost::throw_exception
143
144#if !defined( BOOST_NO_EXCEPTIONS )
145
146#if defined( BOOST_EXCEPTION_DISABLE )
147
148template<class E> BOOST_NORETURN void throw_exception( E const & e )
149{
150 throw_exception_assert_compatibility( e );
151 throw e;
152}
153
154template<class E> BOOST_NORETURN void throw_exception( E const & e, boost::source_location const & )
155{
156 throw_exception_assert_compatibility( e );
157 throw e;
158}
159
160#else // defined( BOOST_EXCEPTION_DISABLE )
161
162template<class E> BOOST_NORETURN void throw_exception( E const & e )
163{
164 throw_exception_assert_compatibility( e );
165 throw wrapexcept<E>( e );
166}
167
168template<class E> BOOST_NORETURN void throw_exception( E const & e, boost::source_location const & loc )
169{
170 throw_exception_assert_compatibility( e );
171 throw wrapexcept<E>( e, loc );
172}
173
174#endif // defined( BOOST_EXCEPTION_DISABLE )
175
176#endif // !defined( BOOST_NO_EXCEPTIONS )
177
178} // namespace boost
179
180// BOOST_THROW_EXCEPTION
181
182#define BOOST_THROW_EXCEPTION(x) ::boost::throw_exception(x, BOOST_CURRENT_LOCATION)
183
184namespace boost
185{
186
187// throw_with_location
188
189namespace detail
190{
191
192struct BOOST_SYMBOL_VISIBLE throw_location
193{
194 boost::source_location location_;
195
196 explicit throw_location( boost::source_location const & loc ): location_( loc )
197 {
198 }
199};
200
201template<class E> class BOOST_SYMBOL_VISIBLE with_throw_location: public E, public throw_location
202{
203public:
204
205 with_throw_location( E const & e, boost::source_location const & loc ): E( e ), throw_location( loc )
206 {
207 }
208
209#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
210
211 with_throw_location( E && e, boost::source_location const & loc ): E( std::move( e ) ), throw_location( loc )
212 {
213 }
214
215#endif
216};
217
218} // namespace detail
219
220#if !defined(BOOST_NO_EXCEPTIONS)
221
222#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) && !defined(BOOST_NO_CXX11_HDR_TYPE_TRAITS)
223
224template<class E> BOOST_NORETURN void throw_with_location( E && e, boost::source_location const & loc = BOOST_CURRENT_LOCATION )
225{
226 throw_exception_assert_compatibility( e );
227 throw detail::with_throw_location<typename std::decay<E>::type>( std::forward<E>( e ), loc );
228}
229
230#else
231
232template<class E> BOOST_NORETURN void throw_with_location( E const & e, boost::source_location const & loc = BOOST_CURRENT_LOCATION )
233{
234 throw_exception_assert_compatibility( e );
235 throw detail::with_throw_location<E>( e, loc );
236}
237
238#endif
239
240#else
241
242template<class E> BOOST_NORETURN void throw_with_location( E const & e, boost::source_location const & loc = BOOST_CURRENT_LOCATION )
243{
244 boost::throw_exception( e, loc );
245}
246
247#endif
248
249// get_throw_location
250
251template<class E> boost::source_location get_throw_location( E const & e )
252{
253#if defined(BOOST_NO_RTTI)
254
255 (void)e;
256 return boost::source_location();
257
258#else
259
260 if( detail::throw_location const* pl = dynamic_cast< detail::throw_location const* >( &e ) )
261 {
262 return pl->location_;
263 }
264 else if( boost::exception const* px = dynamic_cast< boost::exception const* >( &e ) )
265 {
266 return exception_detail::get_exception_throw_location( x: *px );
267 }
268 else
269 {
270 return boost::source_location();
271 }
272
273#endif
274}
275
276} // namespace boost
277
278#endif // #ifndef BOOST_THROW_EXCEPTION_HPP_INCLUDED
279

source code of boost/libs/throw_exception/include/boost/throw_exception.hpp