整理

include/boost/exception/exception.hpp

@@ -0,0 +1,569 @@
+//Copyright (c) 2006-2009 Emil Dotchevski and Reverge Studios, Inc.
+
+//Distributed under the Boost Software License, Version 1.0. (See accompanying
+//file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_EXCEPTION_274DA366004E11DCB1DDFE2E56D89593
+#define BOOST_EXCEPTION_274DA366004E11DCB1DDFE2E56D89593
+
+#include <boost/assert/source_location.hpp>
+#include <boost/config.hpp>
+#include <exception>
+
+#ifdef BOOST_EXCEPTION_MINI_BOOST
+#include  <memory>
+namespace boost { namespace exception_detail { using std::shared_ptr; } }
+#else
+namespace boost { template <class T> class shared_ptr; }
+namespace boost { namespace exception_detail { using boost::shared_ptr; } }
+#endif
+
+#if !defined(BOOST_EXCEPTION_ENABLE_WARNINGS)
+#if defined(__GNUC__) && __GNUC__*100+__GNUC_MINOR__>301
+#pragma GCC system_header
+#endif
+#ifdef __clang__
+#pragma clang system_header
+#endif
+#ifdef _MSC_VER
+#pragma warning(push,1)
+#pragma warning(disable: 4265)
+#endif
+#endif
+
+namespace
+boost
+    {
+    namespace
+    exception_detail
+        {
+        template <class T>
+        class
+        refcount_ptr
+            {
+            public:
+
+            refcount_ptr():
+                px_(0)
+                {
+                }
+
+            ~refcount_ptr()
+                {
+                release();
+                }
+
+            refcount_ptr( refcount_ptr const & x ):
+                px_(x.px_)
+                {
+                add_ref();
+                }
+
+            refcount_ptr &
+            operator=( refcount_ptr const & x )
+                {
+                adopt(x.px_);
+                return *this;
+                }
+
+            void
+            adopt( T * px )
+                {
+                release();
+                px_=px;
+                add_ref();
+                }
+
+            T *
+            get() const
+                {
+                return px_;
+                }
+
+            private:
+
+            T * px_;
+
+            void
+            add_ref()
+                {
+                if( px_ )
+                    px_->add_ref();
+                }
+
+            void
+            release()
+                {
+                if( px_ && px_->release() )
+                    px_=0;
+                }
+            };
+        }
+
+    ////////////////////////////////////////////////////////////////////////
+
+    template <class Tag,class T>
+    class error_info;
+
+    typedef error_info<struct throw_function_,char const *> throw_function;
+    typedef error_info<struct throw_file_,char const *> throw_file;
+    typedef error_info<struct throw_line_,int> throw_line;
+    typedef error_info<struct throw_column_,int> throw_column;
+
+    template <>
+    class
+    error_info<throw_function_,char const *>
+        {
+        public:
+        typedef char const * value_type;
+        value_type v_;
+        explicit
+        error_info( value_type v ):
+            v_(v)
+            {
+            }
+        };
+
+    template <>
+    class
+    error_info<throw_file_,char const *>
+        {
+        public:
+        typedef char const * value_type;
+        value_type v_;
+        explicit
+        error_info( value_type v ):
+            v_(v)
+            {
+            }
+        };
+
+    template <>
+    class
+    error_info<throw_line_,int>
+        {
+        public:
+        typedef int value_type;
+        value_type v_;
+        explicit
+        error_info( value_type v ):
+            v_(v)
+            {
+            }
+        };
+
+    template <>
+    class
+    error_info<throw_column_,int>
+        {
+        public:
+        typedef int value_type;
+        value_type v_;
+        explicit
+        error_info( value_type v ):
+            v_(v)
+            {
+            }
+        };
+
+    class
+    BOOST_SYMBOL_VISIBLE
+    exception;
+
+    namespace
+    exception_detail
+        {
+        class error_info_base;
+        struct type_info_;
+
+        struct
+        error_info_container
+            {
+            virtual char const * diagnostic_information( char const * ) const = 0;
+            virtual shared_ptr<error_info_base> get( type_info_ const & ) const = 0;
+            virtual void set( shared_ptr<error_info_base> const &, type_info_ const & ) = 0;
+            virtual void add_ref() const = 0;
+            virtual bool release() const = 0;
+            virtual refcount_ptr<exception_detail::error_info_container> clone() const = 0;
+
+            protected:
+
+            ~error_info_container() BOOST_NOEXCEPT_OR_NOTHROW
+                {
+                }
+            };
+
+        template <class>
+        struct get_info;
+
+        template <>
+        struct get_info<throw_function>;
+
+        template <>
+        struct get_info<throw_file>;
+
+        template <>
+        struct get_info<throw_line>;
+
+        template <>
+        struct get_info<throw_column>;
+
+        template <class>
+        struct set_info_rv;
+
+        template <>
+        struct set_info_rv<throw_function>;
+
+        template <>
+        struct set_info_rv<throw_file>;
+
+        template <>
+        struct set_info_rv<throw_line>;
+
+        template <>
+        struct set_info_rv<throw_column>;
+
+        char const * get_diagnostic_information( exception const &, char const * );
+
+        void copy_boost_exception( exception *, exception const * );
+
+        template <class E,class Tag,class T>
+        E const & set_info( E const &, error_info<Tag,T> const & );
+
+        template <class E>
+        E const & set_info( E const &, throw_function const & );
+
+        template <class E>
+        E const & set_info( E const &, throw_file const & );
+
+        template <class E>
+        E const & set_info( E const &, throw_line const & );
+
+        template <class E>
+        E const & set_info( E const &, throw_column const & );
+
+        boost::source_location get_exception_throw_location( exception const & );
+        }
+
+    class
+    BOOST_SYMBOL_VISIBLE
+    exception
+        {
+        //<N3757>
+        public:
+        template <class Tag> void set( typename Tag::type const & );
+        template <class Tag> typename Tag::type const * get() const;
+        //</N3757>
+
+        protected:
+
+        exception():
+            throw_function_(0),
+            throw_file_(0),
+            throw_line_(-1),
+            throw_column_(-1)
+            {
+            }
+
+#ifdef __HP_aCC
+        //On HP aCC, this protected copy constructor prevents throwing boost::exception.
+        //On all other platforms, the same effect is achieved by the pure virtual destructor.
+        exception( exception const & x ) BOOST_NOEXCEPT_OR_NOTHROW:
+            data_(x.data_),
+            throw_function_(x.throw_function_),
+            throw_file_(x.throw_file_),
+            throw_line_(x.throw_line_),
+            throw_column_(x.throw_column_)
+            {
+            }
+#endif
+
+        virtual ~exception() BOOST_NOEXCEPT_OR_NOTHROW
+#ifndef __HP_aCC
+            = 0 //Workaround for HP aCC, =0 incorrectly leads to link errors.
+#endif
+            ;
+
+#if (defined(__MWERKS__) && __MWERKS__<=0x3207) || (defined(_MSC_VER) && _MSC_VER<=1310)
+        public:
+#else
+        private:
+
+        template <class E>
+        friend E const & exception_detail::set_info( E const &, throw_function const & );
+
+        template <class E>
+        friend E const & exception_detail::set_info( E const &, throw_file const & );
+
+        template <class E>
+        friend E const & exception_detail::set_info( E const &, throw_line const & );
+
+        template <class E>
+        friend E const & exception_detail::set_info( E const &, throw_column const & );
+
+        template <class E,class Tag,class T>
+        friend E const & exception_detail::set_info( E const &, error_info<Tag,T> const & );
+
+        friend char const * exception_detail::get_diagnostic_information( exception const &, char const * );
+
+        friend boost::source_location exception_detail::get_exception_throw_location( exception const & );
+
+        template <class>
+        friend struct exception_detail::get_info;
+        friend struct exception_detail::get_info<throw_function>;
+        friend struct exception_detail::get_info<throw_file>;
+        friend struct exception_detail::get_info<throw_line>;
+        friend struct exception_detail::get_info<throw_column>;
+        template <class>
+        friend struct exception_detail::set_info_rv;
+        friend struct exception_detail::set_info_rv<throw_function>;
+        friend struct exception_detail::set_info_rv<throw_file>;
+        friend struct exception_detail::set_info_rv<throw_line>;
+        friend struct exception_detail::set_info_rv<throw_column>;
+        friend void exception_detail::copy_boost_exception( exception *, exception const * );
+#endif
+        mutable exception_detail::refcount_ptr<exception_detail::error_info_container> data_;
+        mutable char const * throw_function_;
+        mutable char const * throw_file_;
+        mutable int throw_line_;
+        mutable int throw_column_;
+        };
+
+    inline
+    exception::
+    ~exception() BOOST_NOEXCEPT_OR_NOTHROW
+        {
+        }
+
+    namespace
+    exception_detail
+        {
+        template <class E>
+        E const &
+        set_info( E const & x, throw_function const & y )
+            {
+            x.throw_function_=y.v_;
+            return x;
+            }
+
+        template <class E>
+        E const &
+        set_info( E const & x, throw_file const & y )
+            {
+            x.throw_file_=y.v_;
+            return x;
+            }
+
+        template <class E>
+        E const &
+        set_info( E const & x, throw_line const & y )
+            {
+            x.throw_line_=y.v_;
+            return x;
+            }
+
+        template <class E>
+        E const &
+        set_info( E const & x, throw_column const & y )
+            {
+            x.throw_column_=y.v_;
+            return x;
+            }
+
+#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
+
+        template <>
+        struct
+        set_info_rv<throw_column>
+            {
+            template <class E>
+            static
+            E const &
+            set( E const & x, throw_column && y )
+                {
+                x.throw_column_=y.v_;
+                return x;
+                }
+            };
+
+#endif
+
+        inline boost::source_location get_exception_throw_location( exception const & x )
+            {
+            return boost::source_location(
+                x.throw_file_? x.throw_file_: "",
+                x.throw_line_ >= 0? x.throw_line_: 0,
+                x.throw_function_? x.throw_function_: "",
+                x.throw_column_ >= 0? x.throw_column_: 0
+                );
+            }
+        }
+
+    ////////////////////////////////////////////////////////////////////////
+
+    namespace
+    exception_detail
+        {
+        template <class T>
+        struct
+        BOOST_SYMBOL_VISIBLE
+        error_info_injector:
+            public T,
+            public exception
+            {
+            explicit
+            error_info_injector( T const & x ):
+                T(x)
+                {
+                }
+
+            ~error_info_injector() BOOST_NOEXCEPT_OR_NOTHROW
+                {
+                }
+            };
+
+        struct large_size { char c[256]; };
+        large_size dispatch_boost_exception( exception const * );
+
+        struct small_size { };
+        small_size dispatch_boost_exception( void const * );
+
+        template <class,int>
+        struct enable_error_info_helper;
+
+        template <class T>
+        struct
+        enable_error_info_helper<T,sizeof(large_size)>
+            {
+            typedef T type;
+            };
+
+        template <class T>
+        struct
+        enable_error_info_helper<T,sizeof(small_size)>
+            {
+            typedef error_info_injector<T> type;
+            };
+
+        template <class T>
+        struct
+        enable_error_info_return_type
+            {
+            typedef typename enable_error_info_helper<T,sizeof(exception_detail::dispatch_boost_exception(static_cast<T *>(0)))>::type type;
+            };
+        }
+
+    template <class T>
+    inline
+    typename
+    exception_detail::enable_error_info_return_type<T>::type
+    enable_error_info( T const & x )
+        {
+        typedef typename exception_detail::enable_error_info_return_type<T>::type rt;
+        return rt(x);
+        }
+
+    ////////////////////////////////////////////////////////////////////////
+#if defined(BOOST_NO_EXCEPTIONS)
+    BOOST_NORETURN void throw_exception(std::exception const & e); // user defined
+#endif
+
+    namespace
+    exception_detail
+        {
+        class
+        BOOST_SYMBOL_VISIBLE
+        clone_base
+            {
+            public:
+
+            virtual clone_base const * clone() const = 0;
+            virtual void rethrow() const = 0;
+
+            virtual
+            ~clone_base() BOOST_NOEXCEPT_OR_NOTHROW
+                {
+                }
+            };
+
+        inline
+        void
+        copy_boost_exception( exception * a, exception const * b )
+            {
+            refcount_ptr<error_info_container> data;
+            if( error_info_container * d=b->data_.get() )
+                data = d->clone();
+            a->throw_file_ = b->throw_file_;
+            a->throw_line_ = b->throw_line_;
+            a->throw_function_ = b->throw_function_;
+            a->throw_column_ = b->throw_column_;
+            a->data_ = data;
+            }
+
+        inline
+        void
+        copy_boost_exception( void *, void const * )
+            {
+            }
+
+        template <class T>
+        class
+        BOOST_SYMBOL_VISIBLE
+        clone_impl:
+            public T,
+            public virtual clone_base
+            {
+            struct clone_tag { };
+            clone_impl( clone_impl const & x, clone_tag ):
+                T(x)
+                {
+                copy_boost_exception(this,&x);
+                }
+
+            public:
+
+            explicit
+            clone_impl( T const & x ):
+                T(x)
+                {
+                copy_boost_exception(this,&x);
+                }
+
+            ~clone_impl() BOOST_NOEXCEPT_OR_NOTHROW
+                {
+                }
+
+            private:
+
+            clone_base const *
+            clone() const
+                {
+                return new clone_impl(*this,clone_tag());
+                }
+
+            void
+            rethrow() const
+                {
+#if defined(BOOST_NO_EXCEPTIONS)
+                boost::throw_exception(*this);
+#else
+                throw*this;
+#endif
+                }
+            };
+        }
+
+    template <class T>
+    inline
+    exception_detail::clone_impl<T>
+    enable_current_exception( T const & x )
+        {
+        return exception_detail::clone_impl<T>(x);
+        }
+    }
+
+#if defined(_MSC_VER) && !defined(BOOST_EXCEPTION_ENABLE_WARNINGS)
+#pragma warning(pop)
+#endif
+
+#endif // #ifndef BOOST_EXCEPTION_274DA366004E11DCB1DDFE2E56D89593