Annotation of embedaddon/php/Zend/zend_dynamic_array.c, revision 1.1.1.4
1.1 misho 1: /*
2: +----------------------------------------------------------------------+
3: | Zend Engine |
4: +----------------------------------------------------------------------+
1.1.1.4 ! misho 5: | Copyright (c) 1998-2014 Zend Technologies Ltd. (http://www.zend.com) |
1.1 misho 6: +----------------------------------------------------------------------+
7: | This source file is subject to version 2.00 of the Zend license, |
8: | that is bundled with this package in the file LICENSE, and is |
9: | available through the world-wide-web at the following url: |
10: | http://www.zend.com/license/2_00.txt. |
11: | If you did not receive a copy of the Zend license and are unable to |
12: | obtain it through the world-wide-web, please send a note to |
13: | license@zend.com so we can mail you a copy immediately. |
14: +----------------------------------------------------------------------+
15: | Authors: Andi Gutmans <andi@zend.com> |
16: | Zeev Suraski <zeev@zend.com> |
17: +----------------------------------------------------------------------+
18: */
19:
1.1.1.2 misho 20: /* $Id$ */
1.1 misho 21:
22: #include "zend.h"
23:
24: typedef struct _dynamic_array {
25: char *array;
26: unsigned int element_size;
27: unsigned int current;
28: unsigned int allocated;
29: } dynamic_array;
30:
31: ZEND_API int zend_dynamic_array_init(dynamic_array *da, unsigned int element_size, unsigned int size)
32: {
33: da->element_size = element_size;
34: da->allocated = size;
35: da->current = 0;
36: da->array = (char *) emalloc(size*element_size);
37: if (da->array == NULL) {
38: return 1;
39: }
40: return 0;
41: }
42:
43: ZEND_API void *zend_dynamic_array_push(dynamic_array *da)
44: {
45: if (da->current == da->allocated) {
46: da->allocated *= 2;
47: da->array = (char *) erealloc(da->array, da->allocated*da->element_size);
48: }
49: return (void *)(da->array+(da->current++)*da->element_size);
50: }
51:
52: ZEND_API void *zend_dynamic_array_pop(dynamic_array *da)
53: {
54: return (void *)(da->array+(--(da->current))*da->element_size);
55:
56: }
57:
58: ZEND_API void *zend_dynamic_array_get_element(dynamic_array *da, unsigned int index)
59: {
60: if (index >= da->current) {
61: return NULL;
62: }
63: return (void *)(da->array+index*da->element_size);
64: }
65:
66: /*
67: * Local variables:
68: * tab-width: 4
69: * c-basic-offset: 4
70: * indent-tabs-mode: t
71: * End:
72: */
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