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 +1,84 @@
+/*!
+@file
+Defines `boost::hana::is_subset`.
+
+@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_IS_SUBSET_HPP
+#define BOOST_HANA_IS_SUBSET_HPP
+
+#include <boost/hana/fwd/is_subset.hpp>
+
+#include <boost/hana/all_of.hpp>
+#include <boost/hana/concept/searchable.hpp>
+#include <boost/hana/config.hpp>
+#include <boost/hana/contains.hpp>
+#include <boost/hana/core/common.hpp>
+#include <boost/hana/core/to.hpp>
+#include <boost/hana/core/dispatch.hpp>
+#include <boost/hana/detail/has_common_embedding.hpp>
+#include <boost/hana/functional/partial.hpp>
+
+
+BOOST_HANA_NAMESPACE_BEGIN
+    //! @cond
+    template <typename Xs, typename Ys>
+    constexpr auto is_subset_t::operator()(Xs&& xs, Ys&& ys) const {
+        using S1 = typename hana::tag_of<Xs>::type;
+        using S2 = typename hana::tag_of<Ys>::type;
+        using IsSubset = BOOST_HANA_DISPATCH_IF(
+            decltype(is_subset_impl<S1, S2>{}),
+            hana::Searchable<S1>::value &&
+            hana::Searchable<S2>::value &&
+            !is_default<is_subset_impl<S1, S2>>::value
+        );
+
+    #ifndef BOOST_HANA_CONFIG_DISABLE_CONCEPT_CHECKS
+        static_assert(hana::Searchable<S1>::value,
+        "hana::is_subset(xs, ys) requires 'xs' to be Searchable");
+
+        static_assert(hana::Searchable<S2>::value,
+        "hana::is_subset(xs, ys) requires 'ys' to be Searchable");
+
+        static_assert(!is_default<is_subset_impl<S1, S2>>::value,
+        "hana::is_subset(xs, ys) requires 'xs' and 'ys' to be embeddable "
+        "in a common Searchable");
+    #endif
+
+        return IsSubset::apply(static_cast<Xs&&>(xs), static_cast<Ys&&>(ys));
+    }
+    //! @endcond
+
+    template <typename S1, typename S2, bool condition>
+    struct is_subset_impl<S1, S2, when<condition>> : default_ {
+        template <typename ...Args>
+        static constexpr auto apply(Args&& ...) = delete;
+    };
+
+    template <typename S, bool condition>
+    struct is_subset_impl<S, S, when<condition>> {
+        template <typename Xs, typename Ys>
+        static constexpr decltype(auto) apply(Xs&& xs, Ys&& ys) {
+            return hana::all_of(static_cast<Xs&&>(xs),
+                    hana::partial(hana::contains, static_cast<Ys&&>(ys)));
+        }
+    };
+
+    // Cross-type overload
+    template <typename S1, typename S2>
+    struct is_subset_impl<S1, S2, when<
+        detail::has_nontrivial_common_embedding<Searchable, S1, S2>::value
+    >> {
+        using C = typename common<S1, S2>::type;
+        template <typename Xs, typename Ys>
+        static constexpr decltype(auto) apply(Xs&& xs, Ys&& ys) {
+            return hana::is_subset(hana::to<C>(static_cast<Xs&&>(xs)),
+                                   hana::to<C>(static_cast<Ys&&>(ys)));
+        }
+    };
+BOOST_HANA_NAMESPACE_END
+
+#endif // !BOOST_HANA_IS_SUBSET_HPP