forked from boostorg/exception
99 lines
2.6 KiB
C++
99 lines
2.6 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/exception/detail/refcount_ptr.hpp>
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namespace
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boost
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{
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class exception;
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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 type_info_;
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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 * diagnostic_information() const = 0;
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virtual shared_ptr<error_info_base const> get( type_info_ const & ) const = 0;
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virtual void set( shared_ptr<error_info_base const> const &, type_info_ const & ) = 0;
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};
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template <class ErrorInfo>
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shared_ptr<typename ErrorInfo::value_type const> get_data( exception const & );
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void set_data( exception const *, shared_ptr<exception_detail::error_info_base const> const &, type_info_ const & );
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}
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class
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exception
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{
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public:
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virtual
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char const *
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diagnostic_information() const throw()
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{
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return _diagnostic_information();
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}
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protected:
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exception()
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{
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}
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exception( exception const & e ):
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data_(e.data_)
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{
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}
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virtual ~exception() throw()=0;
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char const *
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_diagnostic_information() const throw()
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{
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if( exception_detail::error_info_container * c=data_.get() )
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try
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{
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if( char const * w = c->diagnostic_information() )
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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 "";
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}
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private:
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friend void exception_detail::set_data( exception const *, shared_ptr<exception_detail::error_info_base const> const &, exception_detail::type_info_ const & );
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template <class ErrorInfo>
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friend shared_ptr<typename ErrorInfo::value_type const> exception_detail::get_data( exception const & );
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mutable exception_detail::refcount_ptr<exception_detail::error_info_container> 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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}
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#endif
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