Alc/vector.h

   1 #ifndef AL_VECTOR_H
   2 #define AL_VECTOR_H
   3
   4 #include <stdlib.h>
   5
   6 #include <AL/al.h>
   7
   8 /* "Base" vector type, designed to alias with the actual vector types. */
   9 typedef struct vector__s {
  10     ALsizei Capacity;
  11     ALsizei Size;
  12 } *vector_;
  13
  14 #define DECL_VECTOR(T) typedef struct vector_##T##_s {                        \
  15     ALsizei Capacity;                                                         \
  16     ALsizei Size;                                                             \
  17     T Data[];                                                                 \
  18 } *vector_##T;                                                                \
  19 typedef const struct vector_##T##_s *const_vector_##T;
  20
  21 #define VECTOR_INIT(_x)   do { (_x) = calloc(1, sizeof(*(_x))); } while(0)
  22 #define VECTOR_DEINIT(_x) do { free((_x)); (_x) = NULL; } while(0)
  23
  24 /* Helper to increase a vector's reserve. Do not call directly. */
  25 ALboolean vector_reserve(void *ptr, size_t orig_count, size_t base_size, size_t obj_count, size_t obj_size, ALboolean exact);
  26 #define VECTOR_RESERVE(_x, _c) (vector_reserve(&(_x), (_x)->Capacity, sizeof(*(_x)), (_c), sizeof((_x)->Data[0]), AL_TRUE))
  27
  28 /* Helper to change a vector's size. Do not call directly. */
  29 ALboolean vector_resize(void *ptr, size_t base_size, size_t obj_count, size_t obj_size);
  30 #define VECTOR_RESIZE(_x, _c) (vector_resize(&(_x), sizeof(*(_x)), (_c), sizeof((_x)->Data[0])))
  31
  32 #define VECTOR_CAPACITY(_x) ((const ALsizei)(_x)->Capacity)
  33 #define VECTOR_SIZE(_x)     ((const ALsizei)(_x)->Size)
  34
  35 #define VECTOR_ITER_BEGIN(_x) ((_x)->Data)
  36 #define VECTOR_ITER_END(_x)   ((_x)->Data + (_x)->Size)
  37
  38 #define VECTOR_PUSH_BACK(_x, _obj) (vector_reserve(&(_x), (_x)->Capacity, sizeof(*(_x)), (_x)->Size+1, sizeof((_x)->Data[0]), AL_FALSE) && \
  39                                     (((_x)->Data[(_x)->Size++] = (_obj)),AL_TRUE))
  40 #define VECTOR_POP_BACK(_x) ((void)((_x)->Size--))
  41
  42 #define VECTOR_BACK(_x)  ((_x)->Data[(_x)->Size-1])
  43 #define VECTOR_FRONT(_x) ((_x)->Data[0])
  44
  45 #define VECTOR_ELEM(_x, _o) ((_x)->Data[(_o)])
  46
  47 #endif /* AL_VECTOR_H */