Merge branch 'cleenup/deprecate-dune-disj-conj-neg-typetraits' into 'master'

Cleanup/deprecate dune disj conj neg typetraits

See merge request !972 (merged)

(cherry picked from commit 47b6d772)

333027ad [test] Remove test of outdated typetraits which are no replaced by standard library features b03a0553 [typetraits] Deprecated and replace occurrences of Dune::Std::conjunction/disjuction/negation

dune/common/std/type_traits.hh

@@ -424,25 +424,11 @@ namespace Std
    * \ingroup CxxUtilities
    **/
   template< class... B >
-  struct conjunction;
-
-  template<>
-  struct conjunction<>
-    : std::true_type
-  {};
-
-  template< class B >
-  struct conjunction< B >
-    : B
-  {};
-
-  template< class B1, class... Bn >
-  struct conjunction< B1, Bn... >
-    : std::conditional_t< static_cast< bool >( B1::value ), conjunction< Bn... >, B1 >
+  struct [[deprecated("Will be removed after release 2.8. Use std::conjuction instead.")]] conjunction
+    : std::conjunction<B...>
   {};
 
 
-
   // disjunction
   // -----------
 
@@ -454,22 +440,10 @@ namespace Std
    * \ingroup CxxUtilities
    **/
   template< class... B >
-  struct disjunction;
-
-  template<>
-  struct disjunction<>
-    : std::false_type
+  struct [[deprecated("Will be removed after release 2.8. Use std::disjunction instead.")]] disjunction
+    : std::disjunction<B...>
   {};
 
-  template< class B >
-  struct disjunction< B >
-    : B
-  {};
-
-  template< class B1, class... Bn >
-  struct disjunction< B1, Bn... >
-    : std::conditional_t< static_cast< bool >( B1::value ), B1, disjunction< Bn... > >
-  {};
 
   // negation
   // --------
@@ -482,7 +456,8 @@ namespace Std
    * \ingroup CxxUtilities
    **/
   template<class B>
-  struct negation : public bool_constant<!static_cast<bool>(B::value)>
+  struct [[deprecated("Will be removed after release 2.8. Use std::negation instead.")]] negation
+    : std::negation<B>
   {};
 
 } // namespace Std