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rvalue references support in error_info

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This commit is contained in:
Emil Dotchevski
2015-03-24 15:44:28 -07:00
parent c1f6b743e4
commit 5a040eedf5
4 changed files with 247 additions and 2 deletions
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15
include/boost/exception/detail/error_info_impl.hpp
View File

@ -12,6 +12,8 @@
#pragma warning(push,1)
#endif
#include <boost/config.hpp>
#include <utility>
#include <string>
namespace
@ -41,11 +43,16 @@ boost
error_info:
public exception_detail::error_info_base
{
public:
public:
typedef T value_type;
error_info( value_type const & value );
#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
error_info( error_info const & );
error_info( value_type && value ) BOOST_NOEXCEPT_IF(BOOST_NOEXCEPT_EXPR(value_type(std::move(value))));
error_info( error_info && x ) BOOST_NOEXCEPT_IF(BOOST_NOEXCEPT_EXPR(value_type(std::move(x.value_))));
#endif
~error_info() throw();
value_type const &
@ -60,7 +67,11 @@ boost
return value_;
}
private:
private:
error_info & operator=( error_info const & );
#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
error_info & operator=( error_info && x );
#endif
std::string name_value_string() const;

111
include/boost/exception/info.hpp
View File

@ -46,6 +46,30 @@ boost
{
}
#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
template <class Tag,class T>
inline
error_info<Tag,T>::
error_info( error_info const & x ):
value_(x.value_)
{
}
template <class Tag,class T>
inline
error_info<Tag,T>::
error_info( value_type && value ) BOOST_NOEXCEPT_IF(BOOST_NOEXCEPT_EXPR(value_type(std::move(value)))):
value_(std::move(value))
{
}
template <class Tag,class T>
inline
error_info<Tag,T>::
error_info( error_info && x ) BOOST_NOEXCEPT_IF(BOOST_NOEXCEPT_EXPR(value_type(std::move(x.value_)))):
value_(std::move(x.value_))
{
}
#endif
template <class Tag,class T>
inline
error_info<Tag,T>::
@ -175,6 +199,83 @@ boost
return x;
}
#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
template <class E,class Tag,class T>
E const & set_info( E const &, error_info<Tag,T> && );
template <class Tag,class T>
class
set_info_rv<error_info<Tag,T> >
{
template <class E,class Tag1,class T1>
friend E const & set_info( E const &, error_info<Tag1,T1> && );
template <class E>
static
E const &
set( E const & x, error_info<Tag,T> && v )
{
typedef error_info<Tag,T> error_info_tag_t;
shared_ptr<error_info_tag_t> p( new error_info_tag_t(std::move(v)) );
exception_detail::error_info_container * c=x.data_.get();
if( !c )
x.data_.adopt(c=new exception_detail::error_info_container_impl);
c->set(p,BOOST_EXCEPTION_STATIC_TYPEID(error_info_tag_t));
return x;
}
};
template <>
class
set_info_rv<throw_function>
{
template <class E,class Tag1,class T1>
friend E const & set_info( E const &, error_info<Tag1,T1> && );
template <class E>
static
E const &
set( E const & x, throw_function && y )
{
x.throw_function_=y.v_;
return x;
}
};
template <>
class
set_info_rv<throw_file>
{
template <class E,class Tag1,class T1>
friend E const & set_info( E const &, error_info<Tag1,T1> && );
template <class E>
static
E const &
set( E const & x, throw_file && y )
{
x.throw_file_=y.v_;
return x;
}
};
template <>
class
set_info_rv<throw_line>
{
template <class E,class Tag1,class T1>
friend E const & set_info( E const &, error_info<Tag1,T1> && );
template <class E>
static
E const &
set( E const & x, throw_line && y )
{
x.throw_line_=y.v_;
return x;
}
};
template <class E,class Tag,class T>
inline
E const &
set_info( E const & x, error_info<Tag,T> && v )
{
return set_info_rv<error_info<Tag,T> >::template set<E>(x,std::move(v));
}
#endif
template <class T>
struct
derives_boost_exception
@ -190,6 +291,16 @@ boost
{
return exception_detail::set_info(x,v);
}
#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
template <class E,class Tag,class T>
inline
typename enable_if<exception_detail::derives_boost_exception<E>,E const &>::type
operator<<( E const & x, error_info<Tag,T> && v )
{
return exception_detail::set_info(x,std::move(v));
}
#endif
}
#if defined(_MSC_VER) && !defined(BOOST_EXCEPTION_ENABLE_WARNINGS)