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-rw-r--r--src/yapf/track_dir.hpp35
1 files changed, 35 insertions, 0 deletions
diff --git a/src/yapf/track_dir.hpp b/src/yapf/track_dir.hpp
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index 000000000..0239f853e
--- /dev/null
+++ b/src/yapf/track_dir.hpp
@@ -0,0 +1,35 @@
+/* $Id$ */
+
+#ifndef TRACK_DIR_HPP
+#define TRACK_DIR_HPP
+
+EXTERN_C_BEGIN
+#include "../tile.h"
+#include "../openttd.h"
+#include "../map.h"
+#include "../rail.h"
+EXTERN_C_END
+
+/** Helpers to allow to work with enum as with type safe bit set in C++ */
+#define DECLARE_ENUM_AS_BIT_MASK(mask_t) \
+ FORCEINLINE mask_t operator | (mask_t m1, mask_t m2) {return (mask_t)((int)m1 | m2);} \
+ FORCEINLINE mask_t operator & (mask_t m1, mask_t m2) {return (mask_t)((int)m1 & m2);} \
+ FORCEINLINE mask_t operator ^ (mask_t m1, mask_t m2) {return (mask_t)((int)m1 ^ m2);} \
+ FORCEINLINE mask_t& operator |= (mask_t& m1, mask_t m2) {m1 = m1 | m2; return m1;} \
+ FORCEINLINE mask_t& operator &= (mask_t& m1, mask_t m2) {m1 = m1 & m2; return m1;} \
+ FORCEINLINE mask_t& operator ^= (mask_t& m1, mask_t m2) {m1 = m1 ^ m2; return m1;} \
+ FORCEINLINE mask_t operator ~(mask_t m) {return (mask_t)(~(int)m);}
+
+/** probably redundant enum combining operators (as we have conversion functions) */
+#define DECLARE_ENUM_AS_BIT_INDEX(idx_t, mask_t) \
+ FORCEINLINE mask_t operator << (int m, idx_t i) {return (mask_t)(m << (int)i);} \
+ FORCEINLINE mask_t operator << (mask_t m, int i) {return (mask_t)(((int)m) << i);} \
+ FORCEINLINE mask_t operator >> (mask_t m, int i) {return (mask_t)(((int)m) >> i);}
+
+DECLARE_ENUM_AS_BIT_MASK(TrackBits)
+DECLARE_ENUM_AS_BIT_INDEX(Track, TrackBits)
+
+DECLARE_ENUM_AS_BIT_MASK(TrackdirBits)
+DECLARE_ENUM_AS_BIT_INDEX(Trackdir, TrackdirBits)
+
+#endif /* TRACK_DIR_HPP */