Added fennec::allocation and all necessary dependencies

include/fennec/lang/intrinsics.h

@@ -20,11 +20,83 @@
 #ifndef FENNEC_LANG_INTRINSICS_H
 #define FENNEC_LANG_INTRINSICS_H
 
-# if defined(__has_builtin)
+// Most major compilers support __has_builtin
+#if defined(__has_builtin)
+
 
 // bitcast is slightly more efficient for build times than using memcpy
-#   define FENNEC_HAS_BUILTIN_BITCAST __has_builtin(__builtin_bit_cast)
+#if __has_builtin(__builtin_bit_cast)
+# define FENNEC_HAS_BUILTIN_BIT_CAST 1
+# define FENNEC_BUILTIN_BIT_CAST(type, arg) __builtin_bit_cast(type, arg)
+#else
+# define FENNEC_HAS_BUILTIN_BIT_CAST 0
+#endif
 
-# endif
+// addressof is very difficult to implement without intrinsics.
+#if __has_builtin(__builtin_addressof)
+# define FENNEC_HAS_BUILTIN_ADDRESSOF 1
+# define FENNEC_BUILTIN_ADDRESSOF(arg) __builtin_addressof(arg)
+#else
+# define FENNEC_HAS_BUILTIN_ADDRESSOF 0
+#endif
+
+
+// Type Traits
+
+// can_convert is also very difficult to implement without intrinsics
+#if __has_builtin(__is_convertible)
+# define FENNEC_HAS_BUILTIN_CAN_CONVERT 1
+# define FENNEC_BUILTIN_CAN_CONVERT(arg0, arg1) __is_convertible(arg0, arg1)
+#else
+# define FENNEC_HAS_BUILTIN_CAN_CONVERT 0
+#endif
+
+// Inconsistent without intrinsics.
+#if __has_builtin(__is_empty)
+# define FENNEC_HAS_BUILTIN_IS_EMPTY 1
+# define FENNEC_BUILTIN_IS_EMPTY(arg) __is_empty(arg)
+#else
+# define FENNEC_HAS_BUILTIN_IS_EMPTY 0
+#endif
+
+// Inconsistent without intrinsics
+#if __has_builtin(__is_polymorphic)
+# define FENNEC_HAS_BUILTIN_IS_POLYMORPHIC 1
+# define FENNEC_BUILTIN_IS_POLYMORPHIC(arg) __is_polymorphic(arg)
+#else
+# define FENNEC_HAS_BUILTIN_IS_POLYMORPHIC 0
+#endif
+
+// Inconsistent without intrinsics
+#if __has_builtin(__is_final)
+# define FENNEC_HAS_BUILTIN_IS_FINAL 1
+# define FENNEC_BUILTIN_IS_FINAL(arg) __is_final(arg)
+#else
+# define FENNEC_HAS_BUILTIN_IS_FINAL 0
+#endif
+
+// Inconsistent without intrinsics
+#if __has_builtin(__is_abstract)
+# define FENNEC_HAS_BUILTIN_IS_ABSTRACT 1
+# define FENNEC_BUILTIN_IS_ABSTRACT(arg) __is_abstract(arg)
+#else
+# define FENNEC_HAS_BUILTIN_IS_ABSTRACT 0
+#endif
+
+// Impossible without instrinsics
+#if __has_builtin(__is_standard_layout)
+# define FENNEC_HAS_BUILTIN_IS_STANDARD_LAYOUT 1
+# define FENNEC_BUILTIN_IS_STANDARD_LAYOUT(arg) __is_standard_layout(arg)
+#else
+# define FENNEC_HAS_BUILTIN_IS_STANDARD_LAYOUT 0
+#endif
+
+
+// For compilers without or differently named builtins
+#else
+
+// TODO: More compiler support
+
+#endif
 
 #endif // FENNEC_LANG_INTRINSICS_H