stabilize build system: depends, installer, boost/bdb fixes, cross targets groundwork

2026-02-24 18:38:47 +00:00
parent da8c28aaeb
commit 65cb2619a7
13106 changed files with 2484322 additions and 1804 deletions
@@ -0,0 +1,46 @@
+/*!
+@file
+Defines `boost::hana::detail::any_of`.
+
+@copyright Louis Dionne 2013-2017
+Distributed under the Boost Software License, Version 1.0.
+(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
+ */
+
+#ifndef BOOST_HANA_DETAIL_ANY_OF_HPP
+#define BOOST_HANA_DETAIL_ANY_OF_HPP
+
+#include <boost/hana/config.hpp>
+
+#include <type_traits>
+#include <utility>
+
+
+BOOST_HANA_NAMESPACE_BEGIN namespace detail {
+    std::false_type expand(...);
+
+    template <template <typename ...> class Predicate, typename ...T>
+    decltype(expand(
+        typename std::enable_if<!Predicate<T>::value, void*>::type{}...
+    )) any_of_impl(int);
+
+    template <template <typename ...> class Predicate, typename ...T>
+    std::true_type any_of_impl(...);
+
+    //! @ingroup group-details
+    //! Returns whether the `Predicate` is satisfied by any of the `T...`.
+    //!
+    //! This metafunction will short-circuit the evaluation at the first
+    //! type satisfying the predicate, if such a type exists.
+    //!
+    //!
+    //! @note
+    //! The implementation technique used here was originally shown to
+    //! me by Eric Fiselier. All credits where due.
+    template <template <typename ...> class Predicate, typename ...T>
+    struct any_of
+        : decltype(any_of_impl<Predicate, T...>(int{}))
+    { };
+} BOOST_HANA_NAMESPACE_END
+
+#endif // !BOOST_HANA_DETAIL_ANY_OF_HPP