Add a dmnsn_unreachable() macro.

Also rename inline.h to compiler.h.

1 files changed, 52 insertions, 0 deletions

diff --git a/libdimension/dimension/compiler.h b/libdimension/dimension/compiler.h
new file mode 100644
index 0000000..5ce8ce8
--- /dev/null
+++ b/libdimension/dimension/compiler.h
@@ -0,0 +1,52 @@
+/*************************************************************************
+ * Copyright (C) 2009-2010 Tavian Barnes <tavianator@tavianator.com>     *
+ *                                                                       *
+ * This file is part of The Dimension Library.                           *
+ *                                                                       *
+ * The Dimension Library is free software; you can redistribute it and/  *
+ * or modify it under the terms of the GNU Lesser General Public License *
+ * as published by the Free Software Foundation; either version 3 of the *
+ * License, or (at your option) any later version.                       *
+ *                                                                       *
+ * The Dimension Library is distributed in the hope that it will be      *
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty   *
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU  *
+ * Lesser General Public License for more details.                       *
+ *                                                                       *
+ * You should have received a copy of the GNU Lesser General Public      *
+ * License along with this program.  If not, see                         *
+ * <http://www.gnu.org/licenses/>.                                       *
+ *************************************************************************/
+
+/**
+ * @file
+ * Compiler abstractions.
+ */
+
+/**
+ * @def DMNSN_INLINE
+ * A portable inline specifier. Expands to the correct method of declaring
+ * inline functions for the version of C you are using.
+ */
+#ifndef DMNSN_INLINE
+  #ifdef __cplusplus
+    /* C++ inline semantics */
+    #define DMNSN_INLINE inline
+  #elif __STDC_VERSION__ >= 199901L
+    /* C99 inline semantics */
+    #define DMNSN_INLINE inline
+  #elif defined(__GNUC__)
+    /* GCC inline semantics */
+    #define DMNSN_INLINE __extension__ extern __inline__
+  #else
+    /* Unknown C - mark functions static and hope the compiler is smart enough
+       to inline them */
+    #define DMNSN_INLINE static
+  #endif
+#endif
+
+#ifdef __GNUC__
+  #define DMNSN_UNREACHABLE() __builtin_unreachable();
+#else
+  #define DMNSN_UNREACHABLE()
+#endif