Le 17/09/14 19:29, Peter Dimov a écrit :
Vicente J. Botet Escriba wrote:
Ok, I have not missed nothing. The split could help to break cycles, but it doesn't yet.
Type Traits depends on MPL now only via Typeof
This is wrong /mpl/ <http://www.pdimov.com/tmp/report-d53f656/mpl.html> |<boost/mpl/and.hpp>| * from |<boost/type_traits/is_virtual_base_of.hpp>| |<boost/mpl/assert.hpp>| * from |<boost/type_traits/common_type.hpp>| * from |<boost/type_traits/detail/common_type_imp.hpp>| |<boost/mpl/at.hpp>| * from |<boost/type_traits/detail/common_type_imp.hpp>| * from |<boost/type_traits/floating_point_promotion.hpp>| |<boost/mpl/aux_/config/lambda.hpp>| * from |<boost/type_traits/detail/template_arity_spec.hpp>| |<boost/mpl/aux_/config/overload_resolution.hpp>| * from |<boost/type_traits/detail/template_arity_spec.hpp>| |<boost/mpl/aux_/lambda_support.hpp>| * from |<boost/type_traits/detail/bool_trait_def.hpp>| * from |<boost/type_traits/detail/size_t_trait_def.hpp>| * from |<boost/type_traits/detail/type_trait_def.hpp>| |<boost/mpl/aux_/preprocessor/params.hpp>| * from |<boost/type_traits/detail/template_arity_spec.hpp>| |<boost/mpl/aux_/template_arity_fwd.hpp>| * from |<boost/type_traits/detail/template_arity_spec.hpp>| |<boost/mpl/begin_end.hpp>| * from |<boost/type_traits/detail/common_type_imp.hpp>| |<boost/mpl/bool.hpp>| * from |<boost/type_traits/common_type.hpp>| * from |<boost/type_traits/detail/bool_trait_def.hpp>| * from |<boost/type_traits/integral_constant.hpp>| |<boost/mpl/contains.hpp>| * from |<boost/type_traits/detail/common_type_imp.hpp>| |<boost/mpl/copy.hpp>| * from |<boost/type_traits/detail/common_type_imp.hpp>| |<boost/mpl/deref.hpp>| * from |<boost/type_traits/detail/common_type_imp.hpp>| |<boost/mpl/eval_if.hpp>| * from |<boost/aligned_storage.hpp>| * from |<boost/type_traits/decay.hpp>| * from |<boost/type_traits/detail/common_type_imp.hpp>| * from |<boost/type_traits/integral_promotion.hpp>| |<boost/mpl/identity.hpp>| * from |<boost/aligned_storage.hpp>| * from |<boost/type_traits/decay.hpp>| * from |<boost/type_traits/integral_promotion.hpp>| |<boost/mpl/if.hpp>| * from |<boost/type_traits/common_type.hpp>| * from |<boost/type_traits/conditional.hpp>| * from |<boost/type_traits/detail/common_type_imp.hpp>| * from |<boost/type_traits/make_signed.hpp>| * from |<boost/type_traits/make_unsigned.hpp>| * from |<boost/type_traits/type_with_alignment.hpp>| |<boost/mpl/inserter.hpp>| * from |<boost/type_traits/detail/common_type_imp.hpp>| |<boost/mpl/int.hpp>| * from |<boost/type_traits/detail/template_arity_spec.hpp>| * from |<boost/type_traits/floating_point_promotion.hpp>| |<boost/mpl/integral_c.hpp>| * from |<boost/type_traits/integral_constant.hpp>| |<boost/mpl/multiplies.hpp>| * from |<boost/type_traits/floating_point_promotion.hpp>| |<boost/mpl/next.hpp>| * from |<boost/type_traits/detail/common_type_imp.hpp>| |<boost/mpl/not.hpp>| * from |<boost/type_traits/is_virtual_base_of.hpp>| |<boost/mpl/or.hpp>| * from |<boost/type_traits/detail/common_type_imp.hpp>| |<boost/mpl/placeholders.hpp>| * from |<boost/type_traits/detail/common_type_imp.hpp>| |<boost/mpl/plus.hpp>| * from |<boost/type_traits/floating_point_promotion.hpp>| |<boost/mpl/push_back.hpp>| * from |<boost/type_traits/detail/common_type_imp.hpp>| |<boost/mpl/size.hpp>| * from |<boost/type_traits/detail/common_type_imp.hpp>| |<boost/mpl/size_t.hpp>| * from |<boost/type_traits/detail/size_t_trait_def.hpp>| |<boost/mpl/vector.hpp>| * from |<boost/type_traits/floating_point_promotion.hpp>| |<boost/mpl/vector/vector0.hpp>| * from |<boost/type_traits/detail/common_type_imp.hpp>| |<boost/mpl/vector/vector10.hpp>| * from |<boost/type_traits/detail/common_type_imp.hpp>|
(which in turn depends on Type Traits itself), so once the Type Traits <-> Typeof cycle is broken, the Type Traits -> MPL dependency will also vanish.
I agree that independent of MPL there is a cycle, Type Traits <-> Typeof. So let me repeat what I said in another post. Let everything in place except type_traits.hpp type_traits/common_type.hpp, which are move to two sub-modules TypeTraits.All and TypeTraits.CommonType with the following dependencies TypeTraits.All -> TypeTraits TypeTraits.CommonType TypeTraits.CommonType -> TypeTraits TypeOf TypeOf -> TypeTraits Note again that this has nothing to be with the Type Traits <->MPL cycle. Best, Vicente