1 /*
2 +----------------------------------------------------------------------+
3 | Zend Engine |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 1998-2018 Zend Technologies Ltd. (http://www.zend.com) |
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
20 /* $Id$ */
21
22 #include "zend.h"
23 #include "zend_ptr_stack.h"
24 #ifdef HAVE_STDARG_H
25 # include <stdarg.h>
26 #endif
27
zend_ptr_stack_init_ex(zend_ptr_stack * stack,zend_bool persistent)28 ZEND_API void zend_ptr_stack_init_ex(zend_ptr_stack *stack, zend_bool persistent)
29 {
30 stack->top_element = stack->elements = NULL;
31 stack->top = stack->max = 0;
32 stack->persistent = persistent;
33 }
34
zend_ptr_stack_init(zend_ptr_stack * stack)35 ZEND_API void zend_ptr_stack_init(zend_ptr_stack *stack)
36 {
37 zend_ptr_stack_init_ex(stack, 0);
38 }
39
40
zend_ptr_stack_n_push(zend_ptr_stack * stack,int count,...)41 ZEND_API void zend_ptr_stack_n_push(zend_ptr_stack *stack, int count, ...)
42 {
43 va_list ptr;
44 void *elem;
45
46 ZEND_PTR_STACK_RESIZE_IF_NEEDED(stack, count)
47
48 va_start(ptr, count);
49 while (count>0) {
50 elem = va_arg(ptr, void *);
51 stack->top++;
52 *(stack->top_element++) = elem;
53 count--;
54 }
55 va_end(ptr);
56 }
57
58
zend_ptr_stack_n_pop(zend_ptr_stack * stack,int count,...)59 ZEND_API void zend_ptr_stack_n_pop(zend_ptr_stack *stack, int count, ...)
60 {
61 va_list ptr;
62 void **elem;
63
64 va_start(ptr, count);
65 while (count>0) {
66 elem = va_arg(ptr, void **);
67 *elem = *(--stack->top_element);
68 stack->top--;
69 count--;
70 }
71 va_end(ptr);
72 }
73
74
75
zend_ptr_stack_destroy(zend_ptr_stack * stack)76 ZEND_API void zend_ptr_stack_destroy(zend_ptr_stack *stack)
77 {
78 if (stack->elements) {
79 pefree(stack->elements, stack->persistent);
80 }
81 }
82
83
zend_ptr_stack_apply(zend_ptr_stack * stack,void (* func)(void *))84 ZEND_API void zend_ptr_stack_apply(zend_ptr_stack *stack, void (*func)(void *))
85 {
86 int i = stack->top;
87
88 while (--i >= 0) {
89 func(stack->elements[i]);
90 }
91 }
92
93
zend_ptr_stack_clean(zend_ptr_stack * stack,void (* func)(void *),zend_bool free_elements)94 ZEND_API void zend_ptr_stack_clean(zend_ptr_stack *stack, void (*func)(void *), zend_bool free_elements)
95 {
96 zend_ptr_stack_apply(stack, func);
97 if (free_elements) {
98 int i = stack->top;
99
100 while (--i >= 0) {
101 pefree(stack->elements[i], stack->persistent);
102 }
103 }
104 stack->top = 0;
105 stack->top_element = stack->elements;
106 }
107
108
zend_ptr_stack_num_elements(zend_ptr_stack * stack)109 ZEND_API int zend_ptr_stack_num_elements(zend_ptr_stack *stack)
110 {
111 return stack->top;
112 }
113 /*
114 * Local variables:
115 * tab-width: 4
116 * c-basic-offset: 4
117 * indent-tabs-mode: t
118 * End:
119 */
120
