forked from boostorg/exception
91 lines
2.3 KiB
C++
91 lines
2.3 KiB
C++
//Copyright (c) 2006-2008 Emil Dotchevski and Reverge Studios, Inc.
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//Distributed under the Boost Software License, Version 1.0. (See accompanying
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//file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#ifndef UUID_274DA366004E11DCB1DDFE2E56D89593
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#define UUID_274DA366004E11DCB1DDFE2E56D89593
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#include <boost/exception/detail/counted_base.hpp>
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#include <boost/intrusive_ptr.hpp>
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#include <typeinfo>
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namespace
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boost
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{
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template <class T>
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class shared_ptr;
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namespace
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exception_detail
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{
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class error_info_base;
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struct
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error_info_container:
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public exception_detail::counted_base
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{
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virtual char const * what( std::type_info const & ) const = 0;
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virtual shared_ptr<error_info_base const> get( std::type_info const & ) const = 0;
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virtual void set( shared_ptr<error_info_base const> const & ) = 0;
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};
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}
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template <class Tag,class T>
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class error_info;
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template <class E,class Tag,class T>
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E const & operator<<( E const &, error_info<Tag,T> const & );
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template <class ErrorInfo,class E>
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shared_ptr<typename ErrorInfo::value_type const> get_error_info( E const & );
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class
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exception
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{
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public:
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virtual ~exception() throw()=0;
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virtual char const * what() const throw();
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private:
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shared_ptr<exception_detail::error_info_base const> get( std::type_info const & ) const;
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void set( shared_ptr<exception_detail::error_info_base const> const & ) const;
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template <class E,class Tag,class T>
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friend E const & operator<<( E const &, error_info<Tag,T> const & );
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template <class ErrorInfo,class E>
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friend shared_ptr<typename ErrorInfo::value_type const> get_error_info( E const & );
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intrusive_ptr<exception_detail::error_info_container> mutable data_;
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};
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inline
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exception::
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~exception() throw()
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{
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}
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inline
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char const *
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exception::
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what() const throw()
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{
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if( data_ )
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try
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{
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char const * w = data_->what(typeid(*this));
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BOOST_ASSERT(0!=w);
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return w;
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}
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catch(...)
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{
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}
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return typeid(*this).name();
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}
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}
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#endif
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