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 +1,78 @@
+/*!
+@file
+Defines `boost::hana::adjust_if`.
+
+@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_ADJUST_IF_HPP
+#define BOOST_HANA_ADJUST_IF_HPP
+
+#include <boost/hana/fwd/adjust_if.hpp>
+
+#include <boost/hana/bool.hpp>
+#include <boost/hana/concept/functor.hpp>
+#include <boost/hana/config.hpp>
+#include <boost/hana/core/dispatch.hpp>
+#include <boost/hana/if.hpp>
+#include <boost/hana/transform.hpp>
+
+
+BOOST_HANA_NAMESPACE_BEGIN
+    //! @cond
+    template <typename Xs, typename Pred, typename F>
+    constexpr auto adjust_if_t::operator()(Xs&& xs, Pred const& pred, F const& f) const {
+        using S = typename hana::tag_of<Xs>::type;
+        using AdjustIf = BOOST_HANA_DISPATCH_IF(adjust_if_impl<S>,
+            hana::Functor<S>::value
+        );
+
+    #ifndef BOOST_HANA_CONFIG_DISABLE_CONCEPT_CHECKS
+        static_assert(hana::Functor<S>::value,
+        "hana::adjust_if(xs, pred, f) requires 'xs' to be a Functor");
+    #endif
+
+        return AdjustIf::apply(static_cast<Xs&&>(xs), pred, f);
+    }
+    //! @endcond
+
+    namespace detail {
+        template <typename Pred, typename F>
+        struct apply_if {
+            Pred const& pred;
+            F const& f;
+
+            template <typename X>
+            constexpr decltype(auto) helper(bool cond, X&& x) const
+            { return cond ? f(static_cast<X&&>(x)) : static_cast<X&&>(x); }
+
+            template <typename X>
+            constexpr decltype(auto) helper(hana::true_, X&& x) const
+            { return f(static_cast<X&&>(x)); }
+
+            template <typename X>
+            constexpr decltype(auto) helper(hana::false_, X&& x) const
+            { return static_cast<X&&>(x); }
+
+
+            template <typename X>
+            constexpr decltype(auto) operator()(X&& x) const {
+                auto cond = hana::if_(pred(x), hana::true_c, hana::false_c);
+                return this->helper(cond, static_cast<X&&>(x));
+            }
+        };
+    }
+
+    template <typename Fun, bool condition>
+    struct adjust_if_impl<Fun, when<condition>> : default_ {
+        template <typename Xs, typename Pred, typename F>
+        static constexpr auto apply(Xs&& xs, Pred const& pred, F const& f) {
+            return hana::transform(static_cast<Xs&&>(xs),
+                                   detail::apply_if<Pred, F>{pred, f});
+        }
+    };
+BOOST_HANA_NAMESPACE_END
+
+#endif // !BOOST_HANA_ADJUST_IF_HPP