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Optimizing for RVO

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[SVN r35249]
This commit is contained in:
Joel de Guzman
2006-09-21 14:20:59 +00:00
parent 9267941ce3
commit 980fe1f6ab
10 changed files with 18 additions and 31 deletions
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4
include/boost/fusion/sequence/container/vector/detail/distance_impl.hpp
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@ -29,10 +29,10 @@ namespace boost { namespace fusion
typename Last::index, typename First::index>::type
call(First const&, Last const&)
{
static typename mpl::minus<
typedef typename mpl::minus<
typename Last::index, typename First::index>::type
result;
return result;
return result();
}
};
};

15
include/boost/fusion/sequence/container/vector/vector.hpp
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@ -16,8 +16,6 @@
#include <boost/mpl/bool.hpp>
#include <boost/type_traits/add_reference.hpp>
#include <boost/type_traits/add_const.hpp>
#include <boost/type_traits/is_convertible.hpp>
#include <boost/utility/enable_if.hpp>
namespace boost { namespace fusion
{
@ -54,20 +52,11 @@ namespace boost { namespace fusion
: vec(rhs.vec) {}
template <typename T>
explicit vector(
T const& rhs
#if defined(BOOST_MSVC)
// VC++ gets confused when RHS is a derived type. It fails to call
// the copy ctor and attempts to call this templated constructor instead.
, typename disable_if<
is_convertible<T, vector> // use copy ctor instead
>::type* dummy = 0
#endif
)
explicit vector(T const& rhs)
: vec(rhs) {}
// Expand a couple of forwarding constructors for arguments
// of type (T0), (T0, T1), (T0, T1, T2) etc. Exanple:
// of type (T0), (T0, T1), (T0, T1, T2) etc. Example:
//
// vector(
// typename detail::call_param<T0>::type _0