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 #include "almalloc.h"
   9
  10 /* "Base" vector type, designed to alias with the actual vector types. */
  11 typedef struct vector__s {
  12     size_t Capacity;
  13     size_t Size;
  14 } *vector_;
  15
  16 #define TYPEDEF_VECTOR(T, N) typedef struct {                                 \
  17     size_t Capacity;                                                          \
  18     size_t Size;                                                              \
  19     T Data[];                                                                 \
  20 } _##N;                                                                       \
  21 typedef _##N* N;                                                              \
  22 typedef const _##N* const_##N;
  23
  24 #define VECTOR(T) struct {                                                    \
  25     size_t Capacity;                                                          \
  26     size_t Size;                                                              \
  27     T Data[];                                                                 \
  28 }*
  29
  30 #define VECTOR_INIT(_x)       do { (_x) = NULL; } while(0)
  31 #define VECTOR_INIT_STATIC()  NULL
  32 #define VECTOR_DEINIT(_x)     do { al_free((_x)); (_x) = NULL; } while(0)
  33
  34 /* Helper to increase a vector's reserve. Do not call directly. */
  35 ALboolean vector_reserve(char *ptr, size_t base_size, size_t obj_size, size_t obj_count, ALboolean exact);
  36 #define VECTOR_RESERVE(_x, _c) (vector_reserve((char*)&(_x), sizeof(*(_x)), sizeof((_x)->Data[0]), (_c), AL_TRUE))
  37
  38 ALboolean vector_resize(char *ptr, size_t base_size, size_t obj_size, size_t obj_count);
  39 #define VECTOR_RESIZE(_x, _c) (vector_resize((char*)&(_x), sizeof(*(_x)), sizeof((_x)->Data[0]), (_c)))
  40
  41 #define VECTOR_CAPACITY(_x) ((_x) ? (_x)->Capacity : 0)
  42 #define VECTOR_SIZE(_x)     ((_x) ? (_x)->Size : 0)
  43
  44 #define VECTOR_BEGIN(_x) ((_x) ? (_x)->Data + 0 : NULL)
  45 #define VECTOR_END(_x)   ((_x) ? (_x)->Data + (_x)->Size : NULL)
  46
  47 ALboolean vector_insert(char *ptr, size_t base_size, size_t obj_size, void *ins_pos, const void *datstart, const void *datend);
  48 #ifdef __GNUC__
  49 #define TYPE_CHECK(T1, T2) __builtin_types_compatible_p(T1, T2)
  50 #define VECTOR_INSERT(_x, _i, _s, _e) __extension__({                         \
  51     ALboolean _r;                                                             \
  52     static_assert(TYPE_CHECK(__typeof((_x)->Data[0]), __typeof(*(_i))), "Incompatible insertion iterator"); \
  53     static_assert(TYPE_CHECK(__typeof((_x)->Data[0]), __typeof(*(_s))), "Incompatible insertion source type"); \
  54     static_assert(TYPE_CHECK(__typeof(*(_s)), __typeof(*(_e))), "Incompatible iterator sources"); \
  55     _r = vector_insert((char*)&(_x), sizeof(*(_x)), sizeof((_x)->Data[0]), (_i), (_s), (_e)); \
  56     _r;                                                                       \
  57 })
  58 #else
  59 #define VECTOR_INSERT(_x, _i, _s, _e) (vector_insert((char*)&(_x), sizeof(*(_x)), sizeof((_x)->Data[0]), (_i), (_s), (_e)))
  60 #endif
  61
  62 #define VECTOR_PUSH_BACK(_x, _obj) (vector_reserve((char*)&(_x), sizeof(*(_x)), sizeof((_x)->Data[0]), VECTOR_SIZE(_x)+1, AL_FALSE) && \
  63                                     (((_x)->Data[(_x)->Size++] = (_obj)),AL_TRUE))
  64 #define VECTOR_POP_BACK(_x) ((void)((_x)->Size--))
  65
  66 #define VECTOR_BACK(_x)  ((_x)->Data[(_x)->Size-1])
  67 #define VECTOR_FRONT(_x) ((_x)->Data[0])
  68
  69 #define VECTOR_ELEM(_x, _o) ((_x)->Data[(_o)])
  70
  71 #define VECTOR_FOR_EACH(_t, _x, _f)  do {                                     \
  72     _t *_iter = VECTOR_BEGIN((_x));                                           \
  73     _t *_end = VECTOR_END((_x));                                              \
  74     for(;_iter != _end;++_iter)                                               \
  75         _f(_iter);                                                            \
  76 } while(0)
  77
  78 #define VECTOR_FOR_EACH_PARAMS(_t, _x, _f, ...)  do {                         \
  79     _t *_iter = VECTOR_BEGIN((_x));                                           \
  80     _t *_end = VECTOR_END((_x));                                              \
  81     for(;_iter != _end;++_iter)                                               \
  82         _f(__VA_ARGS__, _iter);                                               \
  83 } while(0)
  84
  85 #define VECTOR_FIND_IF(_i, _t, _x, _f)  do {                                  \
  86     _t *_iter = VECTOR_BEGIN((_x));                                           \
  87     _t *_end = VECTOR_END((_x));                                              \
  88     for(;_iter != _end;++_iter)                                               \
  89     {                                                                         \
  90         if(_f(_iter))                                                         \
  91             break;                                                            \
  92     }                                                                         \
  93     (_i) = _iter;                                                             \
  94 } while(0)
  95
  96 #define VECTOR_FIND_IF_PARMS(_i, _t, _x, _f, ...)  do {                       \
  97     _t *_iter = VECTOR_BEGIN((_x));                                           \
  98     _t *_end = VECTOR_END((_x));                                              \
  99     for(;_iter != _end;++_iter)                                               \
 100     {                                                                         \
 101         if(_f(__VA_ARGS__, _iter))                                            \
 102             break;                                                            \
 103     }                                                                         \
 104     (_i) = _iter;                                                             \
 105 } while(0)
 106
 107 #endif /* AL_VECTOR_H */