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Converted exception_ptr from a shared_ptr typedef to a stand-alone class to allow simpler declaration of namespace boost { class exception_ptr; }

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[SVN r68202]
This commit is contained in:
Emil Dotchevski
2011-01-17 07:01:35 +00:00
parent c210c38dae
commit 6b0bfad6bf
2 changed files with 39 additions and 7 deletions
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44
include/boost/exception/detail/exception_ptr.hpp
View File

@ -29,10 +29,42 @@
namespace
boost
{
typedef shared_ptr<exception_detail::clone_base const> exception_ptr;
class exception_ptr;
void rethrow_exception( exception_ptr const & );
exception_ptr current_exception();
class
exception_ptr
{
typedef boost::shared_ptr<exception_detail::clone_base const> impl;
impl ptr_;
friend void rethrow_exception( exception_ptr const & );
typedef exception_detail::clone_base const * (impl::*unspecified_bool_type)() const;
public:
exception_ptr()
{
}
explicit
exception_ptr( impl const & ptr ):
ptr_(ptr)
{
}
bool
operator==( exception_ptr const & other ) const
{
return ptr_==other.ptr_;
}
bool
operator!=( exception_ptr const & other ) const
{
return ptr_!=other.ptr_;
}
operator unspecified_bool_type() const
{
return ptr_?&impl::get:0;
}
};
template <class T>
inline
exception_ptr
@ -89,7 +121,7 @@ boost
throw_function(BOOST_CURRENT_FUNCTION) <<
throw_file(__FILE__) <<
throw_line(__LINE__);
static exception_ptr ep(new exception_detail::clone_impl<Exception>(c));
static exception_ptr ep(shared_ptr<exception_detail::clone_base const>(new exception_detail::clone_impl<Exception>(c)));
return ep;
}
@ -272,7 +304,7 @@ boost
success:
{
BOOST_ASSERT(e!=0);
return exception_ptr(e);
return exception_ptr(shared_ptr<exception_detail::clone_base const>(e));
}
case exception_detail::clone_current_exception_result::
bad_alloc:
@ -299,7 +331,7 @@ boost
catch(
exception_detail::clone_base & e )
{
return exception_ptr(e.clone());
return exception_ptr(shared_ptr<exception_detail::clone_base const>(e.clone()));
}
catch(
std::domain_error & e )
@ -421,7 +453,7 @@ boost
rethrow_exception( exception_ptr const & p )
{
BOOST_ASSERT(p);
p->rethrow();
p.ptr_->rethrow();
}
inline

2
include/boost/exception/errinfo_nested_exception.hpp
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@ -12,7 +12,7 @@ boost
namespace exception_detail { class clone_base; };
template <class Tag,class T> class error_info;
template <class T> class shared_ptr;
typedef shared_ptr<exception_detail::clone_base const> exception_ptr;
class exception_ptr;
typedef error_info<struct errinfo_nested_exception_,exception_ptr> errinfo_nested_exception;
}