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 +1,100 @@
+/*!
+@file
+Defines `boost::hana::remove_range` and `boost::hana::remove_range_c`.
+
+@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_REMOVE_RANGE_HPP
+#define BOOST_HANA_REMOVE_RANGE_HPP
+
+#include <boost/hana/fwd/remove_range.hpp>
+
+#include <boost/hana/at.hpp>
+#include <boost/hana/concept/integral_constant.hpp>
+#include <boost/hana/concept/sequence.hpp>
+#include <boost/hana/config.hpp>
+#include <boost/hana/core/dispatch.hpp>
+#include <boost/hana/core/make.hpp>
+#include <boost/hana/integral_constant.hpp>
+#include <boost/hana/length.hpp>
+
+#include <cstddef>
+#include <utility>
+
+
+BOOST_HANA_NAMESPACE_BEGIN
+    //! @cond
+    template <typename Xs, typename From, typename To>
+    constexpr auto remove_range_t::operator()(Xs&& xs, From const& from, To const& to) const {
+        using S = typename hana::tag_of<Xs>::type;
+        using RemoveRange = BOOST_HANA_DISPATCH_IF(remove_range_impl<S>,
+            hana::Sequence<S>::value &&
+            hana::IntegralConstant<From>::value &&
+            hana::IntegralConstant<To>::value
+        );
+
+    #ifndef BOOST_HANA_CONFIG_DISABLE_CONCEPT_CHECKS
+        static_assert(hana::Sequence<S>::value,
+        "hana::remove_range(xs, from, to) requires 'xs' to be a Sequence");
+
+        static_assert(hana::IntegralConstant<From>::value,
+        "hana::remove_range(xs, from, to) requires 'from' to be an IntegralConstant");
+
+        static_assert(hana::IntegralConstant<To>::value,
+        "hana::remove_range(xs, from, to) requires 'to' to be an IntegralConstant");
+    #endif
+
+        return RemoveRange::apply(static_cast<Xs&&>(xs), from, to);
+    }
+    //! @endcond
+
+    template <typename S, bool condition>
+    struct remove_range_impl<S, when<condition>> : default_ {
+        template <std::size_t offset, typename Xs, std::size_t ...before, std::size_t ...after>
+        static constexpr auto
+        remove_range_helper(Xs&& xs, std::index_sequence<before...>,
+                                     std::index_sequence<after...>)
+        {
+            return hana::make<S>(
+                hana::at_c<before>(static_cast<Xs&&>(xs))...,
+                hana::at_c<offset + after>(static_cast<Xs&&>(xs))...
+            );
+        }
+
+        template <typename Xs, typename From, typename To>
+        static constexpr auto apply(Xs&& xs, From const&, To const&) {
+            constexpr std::size_t from = From::value;
+            constexpr std::size_t to = To::value;
+            constexpr std::size_t len = decltype(hana::length(xs))::value;
+            constexpr std::size_t before = from == to ? len : from;
+            constexpr std::size_t after = from == to ? 0 : len - to;
+
+            static_assert(from <= to,
+            "hana::remove_range(xs, from, to) requires '[from, to)' to be a "
+            "valid interval, meaning that 'from <= to'");
+            static_assert(from == to || from >= 0,
+            "hana::remove_range(xs, from, to) requires 'from' to be non-negative");
+            static_assert(from == to || to <= len,
+            "hana::remove_range(xs, from, to) requires 'to <= length(xs)'");
+
+            return remove_range_helper<to>(static_cast<Xs&&>(xs),
+                                           std::make_index_sequence<before>{},
+                                           std::make_index_sequence<after>{});
+        }
+    };
+
+    template <std::size_t from, std::size_t to>
+    struct remove_range_c_t {
+        template <typename Xs>
+        constexpr decltype(auto) operator()(Xs&& xs) const {
+            return hana::remove_range(static_cast<Xs&&>(xs),
+                                      hana::size_c<from>,
+                                      hana::size_c<to>);
+        }
+    };
+BOOST_HANA_NAMESPACE_END
+
+#endif // !BOOST_HANA_REMOVE_RANGE_HPP