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 #define VECTOR_RESIZE(_x, _s, _c) do {                                        \
  35     size_t _size = (_s);                                                      \
  36     size_t _cap = (_c);                                                       \
  37     if(_size > _cap)                                                          \
  38         _cap = _size;                                                         \
  39                                                                               \
  40     if(!(_x) && _cap == 0)                                                    \
  41         break;                                                                \
  42                                                                               \
  43     if(((_x) ? (_x)->Capacity : 0) < _cap)                                    \
  44     {                                                                         \
  45         size_t old_size = ((_x) ? (_x)->Size : 0);                            \
  46         void *temp;                                                           \
  47                                                                               \
  48         temp = al_calloc(16, sizeof(*(_x)) + sizeof((_x)->Data[0])*_cap);     \
  49         assert(temp != NULL);                                                 \
  50         if((_x))                                                              \
  51             memcpy(((ALubyte*)temp)+sizeof(*(_x)), (_x)->Data,                \
  52                    sizeof((_x)->Data[0])*old_size);                           \
  53                                                                               \
  54         al_free((_x));                                                        \
  55         (_x) = temp;                                                          \
  56         (_x)->Capacity = _cap;                                                \
  57     }                                                                         \
  58     (_x)->Size = _size;                                                       \
  59 } while(0)                                                                    \
  60
  61 #define VECTOR_CAPACITY(_x) ((_x) ? (_x)->Capacity : 0)
  62 #define VECTOR_SIZE(_x)     ((_x) ? (_x)->Size : 0)
  63
  64 #define VECTOR_BEGIN(_x) ((_x) ? (_x)->Data + 0 : NULL)
  65 #define VECTOR_END(_x)   ((_x) ? (_x)->Data + (_x)->Size : NULL)
  66
  67 #define VECTOR_PUSH_BACK(_x, _obj) do {      \
  68     size_t _pbsize = VECTOR_SIZE(_x)+1;      \
  69     VECTOR_RESIZE(_x, _pbsize, _pbsize);     \
  70     (_x)->Data[(_x)->Size-1] = (_obj);       \
  71 } while(0)
  72 #define VECTOR_POP_BACK(_x) ((void)((_x)->Size--))
  73
  74 #define VECTOR_BACK(_x)  ((_x)->Data[(_x)->Size-1])
  75 #define VECTOR_FRONT(_x) ((_x)->Data[0])
  76
  77 #define VECTOR_ELEM(_x, _o) ((_x)->Data[(_o)])
  78
  79 #define VECTOR_FOR_EACH(_t, _x, _f)  do {                                     \
  80     _t *_iter = VECTOR_BEGIN((_x));                                           \
  81     _t *_end = VECTOR_END((_x));                                              \
  82     for(;_iter != _end;++_iter)                                               \
  83         _f(_iter);                                                            \
  84 } while(0)
  85
  86 #define VECTOR_FOR_EACH_PARAMS(_t, _x, _f, ...)  do {                         \
  87     _t *_iter = VECTOR_BEGIN((_x));                                           \
  88     _t *_end = VECTOR_END((_x));                                              \
  89     for(;_iter != _end;++_iter)                                               \
  90         _f(__VA_ARGS__, _iter);                                               \
  91 } while(0)
  92
  93 #define VECTOR_FIND_IF(_i, _t, _x, _f)  do {                                  \
  94     _t *_iter = VECTOR_BEGIN((_x));                                           \
  95     _t *_end = VECTOR_END((_x));                                              \
  96     for(;_iter != _end;++_iter)                                               \
  97     {                                                                         \
  98         if(_f(_iter))                                                         \
  99             break;                                                            \
 100     }                                                                         \
 101     (_i) = _iter;                                                             \
 102 } while(0)
 103
 104 #define VECTOR_FIND_IF_PARMS(_i, _t, _x, _f, ...)  do {                       \
 105     _t *_iter = VECTOR_BEGIN((_x));                                           \
 106     _t *_end = VECTOR_END((_x));                                              \
 107     for(;_iter != _end;++_iter)                                               \
 108     {                                                                         \
 109         if(_f(__VA_ARGS__, _iter))                                            \
 110             break;                                                            \
 111     }                                                                         \
 112     (_i) = _iter;                                                             \
 113 } while(0)
 114
 115 #endif /* AL_VECTOR_H */