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Location: cpp/openttd-patchpack/source/src/cmd_helper.h - annotation
r7810:36ef334ff30e
733 B
text/x-c
(svn r11360) -Fix [FS#1375]: do not crash when trying to "draw" an invalid string, just draw a message saying it is invalid.
r6134:aa2aee9f9144 r6134:aa2aee9f9144 r6134:aa2aee9f9144 r6134:aa2aee9f9144 r6134:aa2aee9f9144 r6134:aa2aee9f9144 r6134:aa2aee9f9144 r6134:aa2aee9f9144 r6134:aa2aee9f9144 r6134:aa2aee9f9144 r6134:aa2aee9f9144 r6134:aa2aee9f9144 r6134:aa2aee9f9144 r6134:aa2aee9f9144 r6134:aa2aee9f9144 r6134:aa2aee9f9144 r6134:aa2aee9f9144 r6134:aa2aee9f9144 r6134:aa2aee9f9144 r6134:aa2aee9f9144 r6134:aa2aee9f9144 r6134:aa2aee9f9144 r6134:aa2aee9f9144 r6134:aa2aee9f9144 r6134:aa2aee9f9144 r6134:aa2aee9f9144 r6134:aa2aee9f9144 r6134:aa2aee9f9144 | /* $Id$ */
#ifndef CMD_HELPER_H
#define CMD_HELPER_H
#include "direction.h"
#include "macros.h"
#include "road.h"
template<uint N> static inline void ExtractValid();
template<> static inline void ExtractValid<1>() {}
template<typename T> struct ExtractBits;
template<> struct ExtractBits<Axis> { static const uint Count = 1; };
template<> struct ExtractBits<DiagDirection> { static const uint Count = 2; };
template<> struct ExtractBits<RoadBits> { static const uint Count = 4; };
template<typename T, uint N, typename U> static inline T Extract(U v)
{
// Check if there are enough bits in v
ExtractValid<N + ExtractBits<T>::Count <= sizeof(U) * 8>();
return (T)GB(v, N, ExtractBits<T>::Count);
}
#endif
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