util.hh

   1 #ifndef _GOIR_UTIL_HH
   2 #define _GOIR_UTIL_HH
   3
   4 namespace goir {
   5   template<typename T> inline void permute(T& a,T& b, T& c) { T t=a; a=b; b=c; c=t; }
   6 }
   7
   8 #define color_components(c) (c)[0],(c)[1],(c)[2]
   9
  10 // "foreach" macros, more useful to me than BOOST_FOREACH:
  11
  12 namespace goir {
  13   template<typename T>
  14   struct const_iter
  15   { typedef typename T::const_iterator type; };
  16
  17   template<typename T>
  18   struct iter
  19   { typedef typename T::iterator type; };
  20 }
  21
  22 #define const_foreach(i,container)                                      \
  23   for (goir::const_iter<typeof(container)>::type i = container.begin(); \
  24        i != container.end(); i++)
  25
  26 #define foreach(i,container)                                            \
  27   for (goir::iter<typeof(container)>::type i = container.begin();       \
  28        i != container.end(); i++)
  29
  30 #endif // _GOIR_UTIL_HH