base: add a features.h header.

include/lol/base/features.h

@@ -0,0 +1,47 @@
+//
+//  Lol Engine
+//
+//  Copyright © 2010—2020 Sam Hocevar <sam@hocevar.net>
+//
+//  Lol Engine is free software. It comes without any warranty, to
+//  the extent permitted by applicable law. You can redistribute it
+//  and/or modify it under the terms of the Do What the Fuck You Want
+//  to Public License, Version 2, as published by the WTFPL Task Force.
+//  See http://www.wtfpl.net/ for more details.
+//
+
+#pragma once
+
+//
+// The build-time features
+// ———————————————————————
+//
+
+// C++ compiler features detected through __has_cpp_attribute
+
+#if defined(__has_cpp_attribute) && __has_cpp_attribute(nodiscard)
+#   define LOL_ATTR_NODISCARD [[nodiscard]]
+#else
+#   define LOL_ATTR_NODISCARD /* */
+#endif
+
+#if defined(__has_cpp_attribute) && __has_cpp_attribute(fallthrough)
+#   define LOL_ATTR_FALLTHROUGH [[fallthrough]];
+#else
+#   define LOL_ATTR_FALLTHROUGH /* */
+#endif
+
+// Define some attribute macros.
+
+#ifdef __GNUC__
+#   define LOL_ATTR_FORMAT(n, p) __attribute__((format(printf, n, p)))
+#else
+#   define LOL_ATTR_FORMAT(n, p)
+#endif
+
+#if defined(_WIN32)
+#   define LOL_ATTR_STDCALL __stdcall
+#else
+#   define LOL_ATTR_STDCALL /* */
+#endif
+

include/lol/base/string.h

@@ -19,6 +19,8 @@
 // Contains some utilities to work with std::string objects.
 //
 
+#include <lol/base/features.h>
+
 #include <vector>
 #include <string>
 #include <algorithm> // std::transform

include/lol/math/real.h

@@ -14,9 +14,11 @@
 
 //
 // The Real class
-// --------------
+// ——————————————
 //
 
+#include <lol/base/features.h>
+
 #include <vector>
 #include <string>
 #include <cstdint>

legacy/lol/base/features.h

@@ -28,19 +28,6 @@
 #undef LOL_FEATURE_CXX11_TEMPLATE_ALIASES
 #undef LOL_FEATURE_CXX11_SFINAE_FOR_CTORS
 
-#undef LOL_FEATURE_CXX17_ATTRIBUTE_NODISCARD
-#undef LOL_FEATURE_CXX17_ATTRIBUTE_FALLTHROUGH
-
-/* Features detected through __has_cpp_attribute */
-#ifdef __has_cpp_attribute
-#   if __has_cpp_attribute(nodiscard)
-#       define LOL_FEATURE_CXX17_ATTRIBUTE_NODISCARD 1
-#   endif
-#   if __has_cpp_attribute(fallthrough)
-#       define LOL_FEATURE_CXX17_ATTRIBUTE_FALLTHROUGH 1
-#   endif
-#endif
-
 /* Features supported by GCC */
 #if defined __GNUC__
 #   if !defined(__GXX_EXPERIMENTAL_CXX0X) && __cplusplus < 201103L
@@ -82,35 +69,6 @@
 #endif
 
 
-/*
- * Define some attribute macros.
- */
-
-#ifdef __GNUC__
-#   define LOL_ATTR_FORMAT(n, p) __attribute__((format(printf, n, p)))
-#else
-#   define LOL_ATTR_FORMAT(n, p)
-#endif
-
-#if defined(_WIN32)
-#   define LOL_ATTR_STDCALL __stdcall
-#else
-#   define LOL_ATTR_STDCALL /* */
-#endif
-
-#ifdef LOL_FEATURE_CXX17_ATTRIBUTE_NODISCARD
-#   define LOL_ATTR_NODISCARD [[nodiscard]]
-#else
-#   define LOL_ATTR_NODISCARD /* */
-#endif
-
-#ifdef LOL_FEATURE_CXX17_ATTRIBUTE_FALLTHROUGH
-#   define LOL_ATTR_FALLTHROUGH [[fallthrough]];
-#else
-#   define LOL_ATTR_FALLTHROUGH /* */
-#endif
-
-
 /*
  * Ensure we have ptrdiff_t.
  */