qcsrc/lib/iter.qh

   1 #ifndef ITER_H
   2 #define ITER_H
   3
   4 #define FOREACH_ARRAY(arr, start, end, cond, body) do { \
   5     for (int i = start; i < end; ++i) {                 \
   6         const noref entity it = arr[i];                 \
   7         if (cond) { body }                              \
   8     }                                                   \
   9 } while(0)
  10
  11 #define FOREACH_LIST(list, next, cond, body) do {               \
  12     noref int i = 0;                                            \
  13     for (entity it = list##_first; it; (it = it.next, ++i)) {   \
  14         if (cond) { body }                                      \
  15     }                                                           \
  16 } while(0)
  17
  18 #define FOREACH(list, cond, body) FOREACH_LIST(list, enemy, cond, body)
  19
  20 #endif