-//Copyright (c) 2006-2008 Emil Dotchevski and Reverge Studios, Inc.
+//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 UUID_274DA366004E11DCB1DDFE2E56D89593
#define UUID_274DA366004E11DCB1DDFE2E56D89593
-
-#include <boost/config.hpp>
-#include <boost/detail/workaround.hpp>
-#include <boost/exception/detail/counted_base.hpp>
-#include <boost/intrusive_ptr.hpp>
-#include <typeinfo>
+#if defined(__GNUC__) && !defined(BOOST_EXCEPTION_ENABLE_WARNINGS)
+#pragma GCC system_header
+#endif
+#if defined(_MSC_VER) && !defined(BOOST_EXCEPTION_ENABLE_WARNINGS)
+#pragma warning(push,1)
+#endif
namespace
boost
{
- template <class T>
- class shared_ptr;
-
namespace
exception_detail
{
- class error_info_base;
-
- struct
- error_info_container:
- public exception_detail::counted_base
+ template <class T>
+ class
+ refcount_ptr
{
- virtual char const * diagnostic_information( char const *, std::type_info const & ) const = 0;
- virtual shared_ptr<error_info_base const> get( std::type_info const & ) const = 0;
- virtual void set( shared_ptr<error_info_base const> const & ) = 0;
+ 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();
+ }
};
}
+ ////////////////////////////////////////////////////////////////////////
+
template <class Tag,class T>
class error_info;
- template <class E,class Tag,class T>
- E const & operator<<( E const &, error_info<Tag,T> const & );
-
- template <class ErrorInfo,class E>
- shared_ptr<typename ErrorInfo::value_type const> get_error_info( E const & );
+ 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;
+ template <>
class
- exception
+ error_info<throw_function_,char const *>
{
public:
-
- virtual
- char const *
- diagnostic_information() const throw()
+ typedef char const * value_type;
+ value_type v_;
+ explicit
+ error_info( value_type v ):
+ v_(v)
{
- return _diagnostic_information(0);
}
+ };
- protected:
-
- exception()
+ 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)
{
}
+ };
- exception( exception const & e ):
- data_(e.data_)
+ 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 E,class Tag,class T>
+ E const & operator<<( E const &, error_info<Tag,T> const & );
+
+ template <class E>
+ E const & operator<<( E const &, throw_function const & );
+
+ template <class E>
+ E const & operator<<( E const &, throw_file const & );
+
+ template <class E>
+ E const & operator<<( E const &, throw_line const & );
- char const *
- _diagnostic_information( char const * std_what ) const throw()
+ class exception;
+
+ template <class>
+ class shared_ptr;
+
+ 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 void release() const = 0;
+
+ protected:
+
+ ~error_info_container() throw()
+ {
+ }
+ };
+
+ template <class>
+ struct get_info;
+
+ template <>
+ struct get_info<throw_function>;
+
+ template <>
+ struct get_info<throw_file>;
+
+ template <>
+ struct get_info<throw_line>;
+
+ char const * get_diagnostic_information( exception const &, char const * );
+ }
+
+ class
+ exception
+ {
+ protected:
+
+ exception():
+ throw_function_(0),
+ throw_file_(0),
+ throw_line_(-1)
{
- if( data_ )
- try
- {
- char const * w = data_->diagnostic_information(std_what,typeid(*this));
- BOOST_ASSERT(0!=w);
- return w;
- }
- catch(...)
- {
- }
- return std_what ? std_what : typeid(*this).name();
}
-#if BOOST_WORKAROUND( BOOST_MSVC, BOOST_TESTED_AT(1500) )
- //Force class exception to be abstract.
- //Otherwise, MSVC bug allows throw exception(), even though the copy constructor is protected.
- virtual ~exception() throw()=0;
-#else
-#if BOOST_WORKAROUND( __GNUC__, BOOST_TESTED_AT(4) )
- virtual //Disable bogus GCC warning.
-#endif
- ~exception() throw()
+#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 ) throw():
+ data_(x.data_),
+ throw_function_(x.throw_function_),
+ throw_file_(x.throw_file_),
+ throw_line_(x.throw_line_)
{
}
#endif
+ virtual ~exception() throw()
+#ifndef __HP_aCC
+ = 0 //Workaround for HP aCC, =0 incorrectly leads to link errors.
+#endif
+ ;
+
+#if defined(__MWERKS__) && __MWERKS__<=0x3207
+ public:
+#else
private:
- shared_ptr<exception_detail::error_info_base const> get( std::type_info const & ) const;
- void set( shared_ptr<exception_detail::error_info_base const> const & ) const;
+ template <class E>
+ friend E const & operator<<( E const &, throw_function const & );
+
+ template <class E>
+ friend E const & operator<<( E const &, throw_file const & );
+
+ template <class E>
+ friend E const & operator<<( E const &, throw_line const & );
+
+ friend char const * exception_detail::get_diagnostic_information( exception const &, char const * );
template <class E,class Tag,class T>
friend E const & operator<<( E const &, error_info<Tag,T> const & );
- template <class ErrorInfo,class E>
- friend shared_ptr<typename ErrorInfo::value_type const> get_error_info( E const & );
-
- intrusive_ptr<exception_detail::error_info_container> mutable data_;
+ 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>;
+#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_;
};
-#if BOOST_WORKAROUND( BOOST_MSVC, BOOST_TESTED_AT(1500) ) //See above.
inline
exception::
~exception() throw()
{
}
-#endif
+
+ template <class E>
+ E const &
+ operator<<( E const & x, throw_function const & y )
+ {
+ x.throw_function_=y.v_;
+ return x;
+ }
+
+ template <class E>
+ E const &
+ operator<<( E const & x, throw_file const & y )
+ {
+ x.throw_file_=y.v_;
+ return x;
+ }
+
+ template <class E>
+ E const &
+ operator<<( E const & x, throw_line const & y )
+ {
+ x.throw_line_=y.v_;
+ return x;
+ }
+
+ ////////////////////////////////////////////////////////////////////////
+
+ namespace
+ exception_detail
+ {
+ template <class T>
+ struct
+ error_info_injector:
+ public T,
+ public exception
+ {
+ explicit
+ error_info_injector( T const & x ):
+ T(x)
+ {
+ }
+
+ ~error_info_injector() throw()
+ {
+ }
+ };
+
+ struct large_size { char c[256]; };
+ large_size dispatch( exception * );
+
+ struct small_size { };
+ small_size dispatch( void * );
+
+ 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((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);
+ }
+
+ ////////////////////////////////////////////////////////////////////////
+
+ namespace
+ exception_detail
+ {
+ class
+ clone_base
+ {
+ public:
+
+ virtual clone_base const * clone() const = 0;
+ virtual void rethrow() const = 0;
+
+ virtual
+ ~clone_base() throw()
+ {
+ }
+ };
+
+ inline
+ void
+ copy_boost_exception( exception * a, exception const * b )
+ {
+ *a = *b;
+ }
+
+ inline
+ void
+ copy_boost_exception( void *, void const * )
+ {
+ }
+
+ template <class T>
+ class
+ clone_impl:
+ public T,
+ public clone_base
+ {
+ public:
+
+ explicit
+ clone_impl( T const & x ):
+ T(x)
+ {
+ copy_boost_exception(this,&x);
+ }
+
+ ~clone_impl() throw()
+ {
+ }
+
+ private:
+
+ clone_base const *
+ clone() const
+ {
+ return new clone_impl(*this);
+ }
+
+ void
+ rethrow() const
+ {
+ throw*this;
+ }
+ };
+ }
+
+ 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
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