1 
2 //          Copyright Oliver Kowalke 2009.
3 // Distributed under the Boost Software License, Version 1.0.
4 //    (See accompanying file LICENSE_1_0.txt or copy at
5 //          http://www.boost.org/LICENSE_1_0.txt)
6 
7 #ifndef BOOST_COROUTINES_EXCEPTIONS_H
8 #define BOOST_COROUTINES_EXCEPTIONS_H
9 
10 #include <stdexcept>
11 #include <string>
12 
13 #include <boost/config.hpp>
14 #include <boost/detail/scoped_enum_emulation.hpp>
15 #include <boost/system/error_code.hpp>
16 #include <boost/system/system_error.hpp>
17 #include <boost/type_traits/integral_constant.hpp>
18 
19 #include <boost/coroutine/detail/config.hpp>
20 
21 #ifdef BOOST_HAS_ABI_HEADERS
22 #  include BOOST_ABI_PREFIX
23 #endif
24 
25 namespace boost {
26 namespace coroutines {
27 namespace detail {
28 
29 struct forced_unwind {};
30 
31 }
32 
BOOST_SCOPED_ENUM_DECLARE_BEGIN(coroutine_errc)33 BOOST_SCOPED_ENUM_DECLARE_BEGIN(coroutine_errc)
34 {
35   no_data = 1
36 }
37 BOOST_SCOPED_ENUM_DECLARE_END(coroutine_errc)
38 
39 BOOST_COROUTINES_DECL
40 system::error_category const& coroutine_category() BOOST_NOEXCEPT;
41 
42 }
43 
44 namespace system {
45 
46 template<>
47 struct is_error_code_enum< coroutines::coroutine_errc > : public true_type
48 {};
49 
50 #ifdef BOOST_NO_CXX11_SCOPED_ENUMS
51 template<>
52 struct is_error_code_enum< coroutines::coroutine_errc::enum_type > : public true_type
53 {};
54 #endif
55 
56 inline
make_error_code(coroutines::coroutine_errc e)57 error_code make_error_code( coroutines::coroutine_errc e) //BOOST_NOEXCEPT
58 {
59     return error_code( underlying_cast< int >( e), coroutines::coroutine_category() );
60 }
61 
62 inline
make_error_condition(coroutines::coroutine_errc e)63 error_condition make_error_condition( coroutines::coroutine_errc e) //BOOST_NOEXCEPT
64 {
65     return error_condition( underlying_cast< int >( e), coroutines::coroutine_category() );
66 }
67 
68 }
69 
70 namespace coroutines {
71 
72 class coroutine_error : public std::logic_error
73 {
74 private:
75     system::error_code  ec_;
76 
77 public:
coroutine_error(system::error_code ec)78     coroutine_error( system::error_code ec) :
79         logic_error( ec.message() ),
80         ec_( ec)
81     {}
82 
code() const83     system::error_code const& code() const BOOST_NOEXCEPT
84     { return ec_; }
85 };
86 
87 class invalid_result : public coroutine_error
88 {
89 public:
invalid_result()90     invalid_result() :
91         coroutine_error(
92             system::make_error_code(
93                 coroutine_errc::no_data) )
94     {}
95 };
96 
97 }}
98 
99 #ifdef BOOST_HAS_ABI_HEADERS
100 #  include BOOST_ABI_SUFFIX
101 #endif
102 
103 #endif // BOOST_COROUTINES_EXCEPTIONS_H
104