Add support for value lists to mp_push_front. Refs #53.

2023-05-15 16:53:55 +03:00
parent 90669f2ff4
commit 7cfb1b9b97
3 changed files with 56 additions and 0 deletions
@@ -0,0 +1,46 @@
+// Copyright 2023 Peter Dimov
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/mp11/list.hpp>
+
+#if !defined(BOOST_MP11_HAS_TEMPLATE_AUTO)
+
+#pragma message("Test skipped because BOOST_MP11_HAS_TEMPLATE_AUTO is not defined")
+int main() {}
+
+#else
+
+#include <boost/mp11/integral.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+
+template<auto... A> struct L1 {};
+template<int... I> struct L2 {};
+
+int main()
+{
+    using boost::mp11::mp_push_front;
+    using boost::mp11::mp_true;
+    using boost::mp11::mp_false;
+    using boost::mp11::mp_int;
+
+    BOOST_TEST_TRAIT_SAME(mp_push_front<L1<>>, L1<>);
+    BOOST_TEST_TRAIT_SAME(mp_push_front<L1<>, mp_false>, L1<false>);
+    BOOST_TEST_TRAIT_SAME(mp_push_front<L1<>, mp_false, mp_true>, L1<false, true>);
+
+    BOOST_TEST_TRAIT_SAME(mp_push_front<L1<-1, -2>>, L1<-1, -2>);
+    BOOST_TEST_TRAIT_SAME(mp_push_front<L1<-1, -2>, mp_false>, L1<false, -1, -2>);
+    BOOST_TEST_TRAIT_SAME(mp_push_front<L1<-1, -2>, mp_false, mp_true>, L1<false, true, -1, -2>);
+
+    BOOST_TEST_TRAIT_SAME(mp_push_front<L2<>>, L2<>);
+    BOOST_TEST_TRAIT_SAME(mp_push_front<L2<>, mp_int<0>>, L2<0>);
+    BOOST_TEST_TRAIT_SAME(mp_push_front<L2<>, mp_int<0>, mp_int<1>>, L2<0, 1>);
+
+    BOOST_TEST_TRAIT_SAME(mp_push_front<L2<-1, -2>>, L2<-1, -2>);
+    BOOST_TEST_TRAIT_SAME(mp_push_front<L2<-1, -2>, mp_int<0>>, L2<0, -1, -2>);
+    BOOST_TEST_TRAIT_SAME(mp_push_front<L2<-1, -2>, mp_int<0>, mp_int<1>>, L2<0, 1, -1, -2>);
+
+    return boost::report_errors();
+}
+
+#endif