void clear()
{
if ( has_value )
{
contained.destruct_value();
contained.construct_error( std::exception_ptr() );
}
has_value = false;
}
void clear()
{
if ( has_value )
{
contained.destruct_value();
contained.construct_error( error_type() );
}
has_value = false;
}
void swap( expected & rhs )
{
using std::swap;
if ( has_value == true && rhs.has_value == true ) { swap( contained.value(), rhs.contained.value() ); }
else if ( has_value == false && rhs.has_value == false ) { swap( contained.error(), rhs.contained.error() ); }
else if ( has_value == false && rhs.has_value == true ) { rhs.swap( *this ); }
else if ( has_value == true && rhs.has_value == false ) { error_type t = rhs.contained.error();
rhs.contained.destruct_error();
rhs.contained.construct_value( contained.value() );
contained.construct_error( t );
swap( has_value, rhs.has_value );
}
}
expected( expected const & rhs )
: has_value( rhs.has_value )
{
if ( has_value ) contained.construct_value( rhs.contained.value() );
else contained.construct_error( rhs.contained.error() );
}
expected( nullexp_t, error_type const & rhs )
: has_value( false )
{
contained.construct_error( rhs );
}
expected()
: has_value( false )
{
contained.construct_error( std::exception_ptr() );
}
expected()
: has_value( false )
{
contained.construct_error( error_type() );
}