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 TYPEDEF_VECTOR(T, N) typedef struct {                                 \
  15     ALsizei Capacity;                                                         \
  16     ALsizei Size;                                                             \
  17     T Data[];                                                                 \
  18 } _##N;                                                                       \
  19 typedef _##N* N;                                                              \
  20 typedef const _##N* const_##N;
  21
  22 #define VECTOR(T) struct {                                                    \
  23     ALsizei Capacity;                                                         \
  24     ALsizei Size;                                                             \
  25     T Data[];                                                                 \
  26 }*
  27
  28 #define VECTOR_INIT(_x)       do { (_x) = NULL; } while(0)
  29 #define VECTOR_INIT_STATIC()  NULL
  30 #define VECTOR_DEINIT(_x)     do { free((_x)); (_x) = NULL; } while(0)
  31
  32 /* Helper to increase a vector's reserve. Do not call directly. */
  33 ALboolean vector_reserve(void *ptr, size_t base_size, size_t obj_count, size_t obj_size, ALboolean exact);
  34 #define VECTOR_RESERVE(_x, _c) (vector_reserve(&(_x), sizeof(*(_x)), (_c), sizeof((_x)->Data[0]), AL_TRUE))
  35
  36 /* Helper to change a vector's size. Do not call directly. */
  37 ALboolean vector_resize(void *ptr, size_t base_size, size_t obj_count, size_t obj_size);
  38 #define VECTOR_RESIZE(_x, _c) (vector_resize(&(_x), sizeof(*(_x)), (_c), sizeof((_x)->Data[0])))
  39
  40 #define VECTOR_CAPACITY(_x) ((_x) ? (_x)->Capacity : 0)
  41 #define VECTOR_SIZE(_x)     ((_x) ? (_x)->Size : 0)
  42
  43 #define VECTOR_ITER_BEGIN(_x) ((_x)->Data + 0)
  44 #define VECTOR_ITER_END(_x)   ((_x)->Data + VECTOR_SIZE(_x))
  45
  46 ALboolean vector_insert(void *ptr, size_t base_size, size_t obj_size, void *ins_pos, const void *datstart, const void *datend);
  47 #ifdef __GNUC__
  48 #define TYPE_CHECK(T1, T2) __builtin_types_compatible_p(T1, T2)
  49 #define VECTOR_INSERT(_x, _i, _s, _e) __extension__({                         \
  50     ALboolean _r;                                                             \
  51     static_assert(TYPE_CHECK(__typeof((_x)->Data[0]), __typeof(*(_i))), "Incompatible insertion iterator"); \
  52     static_assert(TYPE_CHECK(__typeof((_x)->Data[0]), __typeof(*(_s))), "Incompatible insertion source type"); \
  53     static_assert(TYPE_CHECK(__typeof(*(_s)), __typeof(*(_e))), "Incompatible iterator sources"); \
  54     _r = vector_insert(&(_x), sizeof(*(_x)), sizeof((_x)->Data[0]), (_i), (_s), (_e)); \
  55     _r;                                                                       \
  56 })
  57 #else
  58 #define VECTOR_INSERT(_x, _i, _s, _e) (vector_insert(&(_x), sizeof(*(_x)), sizeof((_x)->Data[0]), (_i), (_s), (_e)))
  59 #endif
  60
  61 #define VECTOR_PUSH_BACK(_x, _obj) (vector_reserve(&(_x), sizeof(*(_x)), VECTOR_SIZE(_x)+1, sizeof((_x)->Data[0]), AL_FALSE) && \
  62                                     (((_x)->Data[(_x)->Size++] = (_obj)),AL_TRUE))
  63 #define VECTOR_POP_BACK(_x) ((void)((_x)->Size--))
  64
  65 #define VECTOR_BACK(_x)  ((_x)->Data[(_x)->Size-1])
  66 #define VECTOR_FRONT(_x) ((_x)->Data[0])
  67
  68 #define VECTOR_ELEM(_x, _o) ((_x)->Data[(_o)])
  69
  70 #define VECTOR_FOR_EACH(_t, _x, _f)  do {                                     \
  71     _t *_iter = VECTOR_ITER_BEGIN((_x));                                      \
  72     _t *_end = VECTOR_ITER_END((_x));                                         \
  73     for(;_iter != _end;++_iter)                                               \
  74         _f(_iter);                                                            \
  75 } while(0)
  76
  77 #define VECTOR_FIND_IF(_i, _t, _x, _f)  do {                                  \
  78     _t *_end = VECTOR_ITER_END((_x));                                         \
  79     (_i) = VECTOR_ITER_BEGIN((_x));                                           \
  80     for(;(_i) != _end;++(_i))                                                 \
  81     {                                                                         \
  82         if(_f(_i))                                                            \
  83             break;                                                            \
  84     }                                                                         \
  85 } while(0)
  86
  87 #endif /* AL_VECTOR_H */