1 files changed, 77 insertions, 0 deletions
diff --git a/src/third-party/scnlib/include/scn/util/meta.h b/src/third-party/scnlib/include/scn/util/meta.h
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+++ b/src/third-party/scnlib/include/scn/util/meta.h
@@ -0,0 +1,77 @@
+// Copyright 2017 Elias Kosunen
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// This file is a part of scnlib:
+//     https://github.com/eliaskosunen/scnlib
+
+#ifndef SCN_UTIL_META_H
+#define SCN_UTIL_META_H
+
+#include "../detail/fwd.h"
+
+#include <type_traits>
+
+namespace scn {
+    SCN_BEGIN_NAMESPACE
+
+    namespace detail {
+        template <typename... Ts>
+        struct make_void {
+            using type = void;
+        };
+        template <typename... Ts>
+        using void_t = typename make_void<Ts...>::type;
+
+        template <typename... T>
+        void valid_expr(T&&...);
+
+        template <typename T>
+        struct remove_cvref {
+            using type = typename std::remove_cv<
+                typename std::remove_reference<T>::type>::type;
+        };
+        template <typename T>
+        using remove_cvref_t = typename remove_cvref<T>::type;
+
+        // Stolen from range-v3
+        template <typename T>
+        struct static_const {
+            static constexpr T value{};
+        };
+        template <typename T>
+        constexpr T static_const<T>::value;
+
+        template <std::size_t I>
+        struct priority_tag : priority_tag<I - 1> {
+        };
+        template <>
+        struct priority_tag<0> {
+        };
+
+        struct dummy_type {
+        };
+
+        template <typename T>
+        struct dependent_false : std::false_type {
+        };
+
+        template <typename T>
+        using integer_type_for_char = typename std::
+            conditional<std::is_signed<T>::value, int, unsigned>::type;
+    }  // namespace detail
+
+    SCN_END_NAMESPACE
+}  // namespace scn
+
+#endif