280 lines
8.4 KiB
C++
280 lines
8.4 KiB
C++
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//Copyright (c) 2006-2010 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 BOOST_EXCEPTION_8D22C4CA9CC811DCAA9133D256D89593
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#define BOOST_EXCEPTION_8D22C4CA9CC811DCAA9133D256D89593
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#include <boost/config.hpp>
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#include <boost/exception/exception.hpp>
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#include <boost/exception/to_string_stub.hpp>
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#include <boost/exception/detail/error_info_impl.hpp>
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#include <boost/exception/detail/shared_ptr.hpp>
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#include <map>
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#ifndef BOOST_EXCEPTION_ENABLE_WARNINGS
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#if __GNUC__*100+__GNUC_MINOR__>301
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#pragma GCC system_header
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#endif
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#ifdef __clang__
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#pragma clang system_header
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#endif
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#ifdef _MSC_VER
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#pragma warning(push,1)
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#endif
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#endif
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namespace
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boost
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{
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template <class Tag,class T>
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inline
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std::string
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error_info_name( error_info<Tag,T> const & )
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{
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return tag_type_name<Tag>();
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}
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template <class Tag,class T>
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inline
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std::string
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to_string( error_info<Tag,T> const & x )
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{
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return '[' + error_info_name(x) + "] = " + to_string_stub(x.value()) + '\n';
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}
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template <class Tag,class T>
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inline
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std::string
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error_info<Tag,T>::
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name_value_string() const
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{
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return to_string_stub(*this);
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}
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namespace
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exception_detail
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{
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class
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error_info_container_impl BOOST_FINAL:
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public error_info_container
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{
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public:
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error_info_container_impl():
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count_(0)
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{
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}
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~error_info_container_impl() BOOST_NOEXCEPT_OR_NOTHROW
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{
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}
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void
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set( shared_ptr<error_info_base> const & x, type_info_ const & typeid_ )
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{
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BOOST_ASSERT(x);
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info_[typeid_] = x;
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diagnostic_info_str_.clear();
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}
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shared_ptr<error_info_base>
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get( type_info_ const & ti ) const
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{
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error_info_map::const_iterator i=info_.find(ti);
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if( info_.end()!=i )
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{
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shared_ptr<error_info_base> const & p = i->second;
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return p;
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}
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return shared_ptr<error_info_base>();
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}
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char const *
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diagnostic_information( char const * header ) const
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{
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if( header )
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{
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std::ostringstream tmp;
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tmp << header;
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for( error_info_map::const_iterator i=info_.begin(),end=info_.end(); i!=end; ++i )
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{
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error_info_base const & x = *i->second;
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tmp << x.name_value_string();
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}
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tmp.str().swap(diagnostic_info_str_);
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}
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return diagnostic_info_str_.c_str();
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}
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private:
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friend class boost::exception;
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typedef std::map< type_info_, shared_ptr<error_info_base> > error_info_map;
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error_info_map info_;
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mutable std::string diagnostic_info_str_;
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mutable int count_;
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error_info_container_impl( error_info_container_impl const & );
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error_info_container_impl & operator=( error_info_container const & );
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void
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add_ref() const
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{
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++count_;
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}
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bool
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release() const
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{
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if( --count_ )
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return false;
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else
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{
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delete this;
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return true;
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}
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}
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refcount_ptr<error_info_container>
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clone() const
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{
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refcount_ptr<error_info_container> p;
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error_info_container_impl * c=new error_info_container_impl;
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p.adopt(c);
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for( error_info_map::const_iterator i=info_.begin(),e=info_.end(); i!=e; ++i )
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{
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shared_ptr<error_info_base> cp(i->second->clone());
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c->info_.insert(std::make_pair(i->first,cp));
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}
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return p;
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}
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};
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template <class E,class Tag,class T>
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inline
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E const &
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set_info( E const & x, error_info<Tag,T> const & v )
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{
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typedef error_info<Tag,T> error_info_tag_t;
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shared_ptr<error_info_tag_t> p( new error_info_tag_t(v) );
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exception_detail::error_info_container * c=x.data_.get();
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if( !c )
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x.data_.adopt(c=new exception_detail::error_info_container_impl);
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c->set(p,BOOST_EXCEPTION_STATIC_TYPEID(error_info_tag_t));
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return x;
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}
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#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
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template <class E,class Tag,class T>
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E const & set_info( E const &, error_info<Tag,T> && );
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template <class T>
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struct set_info_rv;
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template <class Tag,class T>
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struct
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set_info_rv<error_info<Tag,T> >
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{
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template <class E,class Tag1,class T1>
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friend E const & set_info( E const &, error_info<Tag1,T1> && );
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template <class E>
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static
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E const &
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set( E const & x, error_info<Tag,T> && v )
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{
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typedef error_info<Tag,T> error_info_tag_t;
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shared_ptr<error_info_tag_t> p( new error_info_tag_t(std::move(v)) );
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exception_detail::error_info_container * c=x.data_.get();
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if( !c )
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x.data_.adopt(c=new exception_detail::error_info_container_impl);
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c->set(p,BOOST_EXCEPTION_STATIC_TYPEID(error_info_tag_t));
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return x;
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}
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};
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template <>
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struct
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set_info_rv<throw_function>
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{
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template <class E,class Tag1,class T1>
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friend E const & set_info( E const &, error_info<Tag1,T1> && );
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template <class E>
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static
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E const &
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set( E const & x, throw_function && y )
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{
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x.throw_function_=y.v_;
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return x;
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}
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};
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template <>
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struct
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set_info_rv<throw_file>
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{
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template <class E,class Tag1,class T1>
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friend E const & set_info( E const &, error_info<Tag1,T1> && );
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template <class E>
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static
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E const &
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set( E const & x, throw_file && y )
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{
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x.throw_file_=y.v_;
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return x;
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}
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};
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template <>
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struct
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set_info_rv<throw_line>
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{
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template <class E,class Tag1,class T1>
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friend E const & set_info( E const &, error_info<Tag1,T1> && );
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template <class E>
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static
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E const &
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set( E const & x, throw_line && y )
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{
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x.throw_line_=y.v_;
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return x;
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}
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};
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template <class E,class Tag,class T>
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inline
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E const &
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set_info( E const & x, error_info<Tag,T> && v )
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{
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return set_info_rv<error_info<Tag,T> >::template set<E>(x,std::move(v));
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}
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#endif
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template <class T>
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struct
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derives_boost_exception
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{
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enum e { value = (sizeof(dispatch_boost_exception((T*)0))==sizeof(large_size)) };
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};
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}
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template <class E,class Tag,class T>
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inline
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typename enable_if<exception_detail::derives_boost_exception<E>,E const &>::type
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operator<<( E const & x, error_info<Tag,T> const & v )
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{
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return exception_detail::set_info(x,v);
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}
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#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
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template <class E,class Tag,class T>
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inline
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typename enable_if<exception_detail::derives_boost_exception<E>,E const &>::type
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operator<<( E const & x, error_info<Tag,T> && v )
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{
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return exception_detail::set_info(x,std::move(v));
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}
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#endif
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}
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#if defined(_MSC_VER) && !defined(BOOST_EXCEPTION_ENABLE_WARNINGS)
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#pragma warning(pop)
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#endif
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#endif
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