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/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) Zend Technologies Ltd. (http://www.zend.com) |
+----------------------------------------------------------------------+
| This source file is subject to version 2.00 of the Zend license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.zend.com/license/2_00.txt. |
| If you did not receive a copy of the Zend license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@zend.com so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andi Gutmans <andi@php.net> |
| Zeev Suraski <zeev@php.net> |
+----------------------------------------------------------------------+
*/
#ifndef ZEND_STACK_H
#define ZEND_STACK_H
typedef struct _zend_stack {
int size, top, max;
void *elements;
} zend_stack;
#define STACK_BLOCK_SIZE 16
typedef enum {
ZEND_STACK_APPLY_TOPDOWN,
ZEND_STACK_APPLY_BOTTOMUP,
} zend_stack_apply_direction;
BEGIN_EXTERN_C()
ZEND_API void zend_stack_init(zend_stack *stack, int size);
ZEND_API int zend_stack_push(zend_stack *stack, const void *element);
ZEND_API void *zend_stack_top(const zend_stack *stack);
ZEND_API void zend_stack_del_top(zend_stack *stack);
ZEND_API int zend_stack_int_top(const zend_stack *stack);
ZEND_API bool zend_stack_is_empty(const zend_stack *stack);
ZEND_API void zend_stack_destroy(zend_stack *stack);
ZEND_API void *zend_stack_base(const zend_stack *stack);
ZEND_API int zend_stack_count(const zend_stack *stack);
ZEND_API void zend_stack_apply(zend_stack *stack, int type, int (*apply_function)(void *element));
ZEND_API void zend_stack_apply_with_argument(zend_stack *stack, zend_stack_apply_direction type, int (*apply_function)(void *element, void *arg), void *arg);
ZEND_API void zend_stack_clean(zend_stack *stack, void (*func)(void *), bool free_elements);
END_EXTERN_C()
#endif /* ZEND_STACK_H */
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