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     size_t Capacity;
  11     size_t Size;
  12 } *vector_;
  13
  14 #define TYPEDEF_VECTOR(T, N) typedef struct {                                 \
  15     size_t Capacity;                                                          \
  16     size_t Size;                                                              \
  17     T Data[];                                                                 \
  18 } _##N;                                                                       \
  19 typedef _##N* N;                                                              \
  20 typedef const _##N* const_##N;
  21
  22 #define VECTOR(T) struct {                                                    \
  23     size_t Capacity;                                                          \
  24     size_t 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(char *ptr, size_t base_size, size_t obj_size, size_t obj_count, ALboolean exact);
  34 #define VECTOR_RESERVE(_x, _c) (vector_reserve((char*)&(_x), sizeof(*(_x)), sizeof((_x)->Data[0]), (_c), AL_TRUE))
  35
  36 ALboolean vector_resize(char *ptr, size_t base_size, size_t obj_size, size_t obj_count);
  37 #define VECTOR_RESIZE(_x, _c) (vector_resize((char*)&(_x), sizeof(*(_x)), sizeof((_x)->Data[0]), (_c)))
  38
  39 #define VECTOR_CAPACITY(_x) ((_x) ? (_x)->Capacity : 0)
  40 #define VECTOR_SIZE(_x)     ((_x) ? (_x)->Size : 0)
  41
  42 #define VECTOR_ITER_BEGIN(_x) ((_x) ? (_x)->Data + 0 : NULL)
  43 #define VECTOR_ITER_END(_x)   ((_x) ? (_x)->Data + (_x)->Size : NULL)
  44
  45 ALboolean vector_insert(char *ptr, size_t base_size, size_t obj_size, void *ins_pos, const void *datstart, const void *datend);
  46 #ifdef __GNUC__
  47 #define TYPE_CHECK(T1, T2) __builtin_types_compatible_p(T1, T2)
  48 #define VECTOR_INSERT(_x, _i, _s, _e) __extension__({                         \
  49     ALboolean _r;                                                             \
  50     static_assert(TYPE_CHECK(__typeof((_x)->Data[0]), __typeof(*(_i))), "Incompatible insertion iterator"); \
  51     static_assert(TYPE_CHECK(__typeof((_x)->Data[0]), __typeof(*(_s))), "Incompatible insertion source type"); \
  52     static_assert(TYPE_CHECK(__typeof(*(_s)), __typeof(*(_e))), "Incompatible iterator sources"); \
  53     _r = vector_insert((char*)&(_x), sizeof(*(_x)), sizeof((_x)->Data[0]), (_i), (_s), (_e)); \
  54     _r;                                                                       \
  55 })
  56 #else
  57 #define VECTOR_INSERT(_x, _i, _s, _e) (vector_insert((char*)&(_x), sizeof(*(_x)), sizeof((_x)->Data[0]), (_i), (_s), (_e)))
  58 #endif
  59
  60 #define VECTOR_PUSH_BACK(_x, _obj) (vector_reserve((char*)&(_x), sizeof(*(_x)), sizeof((_x)->Data[0]), VECTOR_SIZE(_x)+1, AL_FALSE) && \
  61                                     (((_x)->Data[(_x)->Size++] = (_obj)),AL_TRUE))
  62 #define VECTOR_POP_BACK(_x) ((void)((_x)->Size--))
  63
  64 #define VECTOR_BACK(_x)  ((_x)->Data[(_x)->Size-1])
  65 #define VECTOR_FRONT(_x) ((_x)->Data[0])
  66
  67 #define VECTOR_ELEM(_x, _o) ((_x)->Data[(_o)])
  68
  69 #define VECTOR_FOR_EACH(_t, _x, _f)  do {                                     \
  70     _t *_iter = VECTOR_ITER_BEGIN((_x));                                      \
  71     _t *_end = VECTOR_ITER_END((_x));                                         \
  72     for(;_iter != _end;++_iter)                                               \
  73         _f(_iter);                                                            \
  74 } while(0)
  75
  76 #define VECTOR_FIND_IF(_i, _t, _x, _f)  do {                                  \
  77     _t *_iter = VECTOR_ITER_BEGIN((_x));                                      \
  78     _t *_end = VECTOR_ITER_END((_x));                                         \
  79     for(;_iter != _end;++_iter)                                               \
  80     {                                                                         \
  81         if(_f(_iter))                                                         \
  82             break;                                                            \
  83     }                                                                         \
  84     (_i) = _iter;                                                             \
  85 } while(0)
  86
  87 #endif /* AL_VECTOR_H */