81 lines
3.0 KiB
C++
81 lines
3.0 KiB
C++
// Copyright (c) 2006, Giovanni P. Deretta
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//
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// This code may be used under either of the following two licences:
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE. OF SUCH DAMAGE.
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//
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// Or:
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_COROUTINE_EXCEPTION_HPP_20060601
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#define BOOST_COROUTINE_EXCEPTION_HPP_20060601
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#include <exception>
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#include <typeinfo>
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namespace boost { namespace coroutines {
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// All coroutine exceptions are derived from this base.
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class exception_base : public std::exception {};
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// This exception is thrown when a coroutine is requested
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// to exit.
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class exit_exception: public exception_base {};
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// This exception is thrown on a coroutine invocation
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// if a coroutine exits without
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// returning a result. Note that calling invoke()
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// on an already exited coroutine is undefined behaviour.
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class coroutine_exited: public exception_base {};
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// This exception is thrown on a coroutine invocation
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// if a coroutine enter the wait state without
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// returning a result. Note that calling invoke()
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// on a waiting coroutine is undefined behaviour.
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class waiting : public exception_base {};
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class unknown_exception_tag {};
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// This exception is thrown on a coroutine invocation
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// if the coroutine is exited by an uncatched exception
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// (not derived from exit_exception). abnormal_exit::type()
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// returns the typeid of that exception if it is derived
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// from std::exception, else returns typeid(unknonw_exception_tag)
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class abnormal_exit : public std::exception {
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public:
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abnormal_exit(std::type_info const& e) :
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m_e (e) {};
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const char* what() const throw() {
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return m_e == typeid(unknown_exception_tag)?
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"unknown exception" :
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m_e.name();
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}
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std::type_info const& type() const throw() {
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return m_e;
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}
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private:
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std::type_info const& m_e;
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};
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} }
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#endif
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