Varray.h
上传用户:blenddy
上传日期:2007-01-07
资源大小:6495k
文件大小:1k
- /* ********************************************************************
- *
- * Varray.h -- header file for varray.c which provides a generic
- * set of functions to handle variable sized arrays.
- *
- * originally by Jiang Wu
- * ********************************************************************/
- #ifndef _VARRAY_H_
- #define _VARRAY_H_
- typedef struct _varray
- {
- size_t nobj; /* number of objects in this array */
- size_t maxObj; /* max. number of objects in this array */
- size_t size; /* size of each element in the array */
- void *val; /* array of elements */
- } Varray;
- /* type for custom copying function */
- typedef void (*CopyingFunct) (void *from, void *to);
- #define VARRAY_INITIAL_SIZE 32
- #define ENLARGE_VARRAY(ARRAY, INC)
- (
- (ARRAY)->maxObj += (INC),
- (ARRAY)->val = (void *) realloc((ARRAY)->val,
- (ARRAY)->size * (ARRAY)->maxObj)
- )
- #define VARRAY_NTH(VAL, SIZE, N) (((char *) (VAL)) + (SIZE) * (N))
- #define FreeVarray(ARRAY)
- if ((ARRAY) != NULL) { free((ARRAY)->val); free((ARRAY)); (ARRAY) = NULL ; }
- #define ModifyVarray(ARRAY, N, NEW, COPY)
- if ((N) < (ARRAY)->nobj)
- (COPY)(VARRAY_NTH((ARRAY)->val, (ARRAY)->size, (N)), (NEW))
- #define GetVarray(ARRAY, N)
- ((N) < (ARRAY)->nobj ? VARRAY_NTH((ARRAY)->val, (ARRAY)->size, (N))
- : NULL)
- extern Varray *NewVarray(size_t nobj, size_t size);
- extern int AppendVarray(Varray * array, void *value, CopyingFunct copy);
- #endif /* _VARRAY_H_ */