#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
BEGIN_EXTERN_C()
ZEND_API int 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 int zend_stack_del_top(zend_stack *stack);
ZEND_API int zend_stack_int_top(const zend_stack *stack);
ZEND_API int zend_stack_is_empty(const zend_stack *stack);
ZEND_API int 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, int type, int (*apply_function)(void *element, void *arg), void *arg);
ZEND_API void zend_stack_clean(zend_stack *stack, void (*func)(void *), zend_bool free_elements);
END_EXTERN_C()
#define ZEND_STACK_APPLY_TOPDOWN 1
#define ZEND_STACK_APPLY_BOTTOMUP 2
#endif