[Core, Wsi] add and use macros to avoid custom AsCaster boilerplate

Author: Arthapz

include/stormkit/Core/AsCastsMacro.hpp

@@ -0,0 +1,78 @@
+// Copryright (C) 2022 Arthur LAURENT <arthur.laurent4@gmail.com>
+// This file is subject to the license terms in the LICENSE file
+// found in the top-level of this distribution
+
+#ifndef STORMKIT_ASCASTS_MACRO_HPP
+#define STORMKIT_ASCASTS_MACRO_HPP
+
+#include <stormkit/Core/PlatformMacro.hpp>
+
+#define ASCASTER_STRICT_DECLARE(_To, _From)                                                      \
+    template<stormkit::core::meta::IsStrict<_To> To, stormkit::core::meta::IsStrict<_From> From> \
+    struct stormkit::casts::AsCaster<To, From> {                                                 \
+        static constexpr auto operator()(const From&                 from,                       \
+                                         const std::source_location& location) noexcept -> To;   \
+    };
+
+#define ASCASTER_STRICT_DEFINE(_To, _From)                                                       \
+    template<stormkit::core::meta::IsStrict<_To> To, stormkit::core::meta::IsStrict<_From> From> \
+    STORMKIT_FORCE_INLINE constexpr auto stormkit::casts::AsCaster<To, From>::operator()(        \
+        const From&                                  from,                                       \
+        [[maybe_unused]] const std::source_location& location) noexcept -> To
+
+#define ASCASTER_STRICT(_To, _From)     \
+    ASCASTER_STRICT_DECLARE(_To, _From) \
+    ASCASTER_STRICT_DEFINE(_To, _From)
+
+#define ASCASTER_DECLARE(_To, _From)                                                           \
+    template<_To To, _From From>                                                               \
+    struct stormkit::casts::AsCaster<To, From> {                                               \
+        static constexpr auto operator()(const From&                 from,                     \
+                                         const std::source_location& location) noexcept -> To; \
+    };
+
+#define ASCASTER_DEFINE(_To, _From)                                                       \
+    template<_To To, _From From>                                                          \
+    STORMKIT_FORCE_INLINE constexpr auto stormkit::casts::AsCaster<To, From>::operator()( \
+        const From&                                  from,                                \
+        [[maybe_unused]] const std::source_location& location) noexcept -> To
+
+#define ASCASTER(_To, _From)     \
+    ASCASTER_DECLARE(_To, _From) \
+    ASCASTER_DEFINE(_To, _From)
+
+#define NARROWCASTER_STRICT_DECLARE(_To, _From)                                                  \
+    template<stormkit::core::meta::IsStrict<_To> To, stormkit::core::meta::IsStrict<_From> From> \
+    struct stormkit::casts::NarrowCaster<To, From> {                                             \
+        static constexpr auto operator()(const From&                 from,                       \
+                                         const std::source_location& location) noexcept -> To;   \
+    };
+
+#define NARROWCASTER_STRICT_DEFINE(_To, _From)                                                   \
+    template<stormkit::core::meta::IsStrict<_To> To, stormkit::core::meta::IsStrict<_From> From> \
+    STORMKIT_FORCE_INLINE constexpr auto stormkit::casts::NarrowCaster<To, From>::operator()(    \
+        const From&                                  from,                                       \
+        [[maybe_unused]] const std::source_location& location) noexcept -> To
+
+#define NARROWCASTER_STRICT(_To, _From)     \
+    NARROWCASTER_STRICT_DECLARE(_To, _From) \
+    NARROWCASTER_STRICT_DEFINE(_To, _From)
+
+#define NARROWCASTER_DECLARE(_To, _From)                                                       \
+    template<_To To, _From From>                                                               \
+    struct stormkit::casts::NarrowCaster<To, From> {                                           \
+        static constexpr auto operator()(const From&                 from,                     \
+                                         const std::source_location& location) noexcept -> To; \
+    };
+
+#define NARROWCASTER_DEFINE(_To, _From)                                                       \
+    template<_To To, _From From>                                                              \
+    STORMKIT_FORCE_INLINE constexpr auto stormkit::casts::NarrowCaster<To, From>::operator()( \
+        const From&                                  from,                                    \
+        [[maybe_unused]] const std::source_location& location) noexcept -> To
+
+#define NARROWCASTER(_To, _From)     \
+    NARROWCASTER_DECLARE(_To, _From) \
+    NARROWCASTER_DEFINE(_To, _From)
+
+#endif