117 lines
2.9 KiB
C
117 lines
2.9 KiB
C
/*
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+----------------------------------------------------------------------+
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| Zend Engine |
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+----------------------------------------------------------------------+
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| Copyright © Zend Technologies Ltd., a subsidiary company of |
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| Perforce Software, Inc., and Contributors. |
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+----------------------------------------------------------------------+
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| This source file is subject to the Modified BSD License that is |
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| bundled with this package in the file LICENSE, and is available |
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| through the World Wide Web at <https://www.php.net/license/>. |
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| |
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| SPDX-License-Identifier: BSD-3-Clause |
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+----------------------------------------------------------------------+
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| Authors: Andi Gutmans <andi@php.net> |
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| Zeev Suraski <zeev@php.net> |
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+----------------------------------------------------------------------+
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*/
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#include "zend.h"
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#include "zend_ptr_stack.h"
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#include <stdarg.h>
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ZEND_API void zend_ptr_stack_init_ex(zend_ptr_stack *stack, bool persistent)
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{
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stack->top_element = stack->elements = NULL;
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stack->top = stack->max = 0;
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stack->persistent = persistent;
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}
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ZEND_API void zend_ptr_stack_init(zend_ptr_stack *stack)
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{
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zend_ptr_stack_init_ex(stack, false);
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}
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ZEND_API void zend_ptr_stack_n_push(zend_ptr_stack *stack, int count, ...)
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{
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va_list ptr;
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void *elem;
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ZEND_PTR_STACK_RESIZE_IF_NEEDED(stack, count)
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va_start(ptr, count);
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while (count>0) {
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elem = va_arg(ptr, void *);
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stack->top++;
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*(stack->top_element++) = elem;
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count--;
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}
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va_end(ptr);
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}
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ZEND_API void zend_ptr_stack_n_pop(zend_ptr_stack *stack, int count, ...)
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{
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va_list ptr;
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void **elem;
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va_start(ptr, count);
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while (count>0) {
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elem = va_arg(ptr, void **);
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*elem = *(--stack->top_element);
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stack->top--;
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count--;
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}
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va_end(ptr);
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}
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ZEND_API void zend_ptr_stack_destroy(zend_ptr_stack *stack)
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{
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if (stack->elements) {
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pefree(stack->elements, stack->persistent);
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}
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}
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ZEND_API void zend_ptr_stack_apply(zend_ptr_stack *stack, void (*func)(void *))
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{
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int i = stack->top;
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while (--i >= 0) {
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func(stack->elements[i]);
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}
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}
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ZEND_API void zend_ptr_stack_reverse_apply(zend_ptr_stack *stack, void (*func)(void *))
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{
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int i = 0;
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while (i < stack->top) {
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func(stack->elements[i++]);
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}
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}
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ZEND_API void zend_ptr_stack_clean(zend_ptr_stack *stack, void (*func)(void *), bool free_elements)
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{
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zend_ptr_stack_apply(stack, func);
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if (free_elements) {
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int i = stack->top;
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while (--i >= 0) {
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pefree(stack->elements[i], stack->persistent);
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}
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}
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stack->top = 0;
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stack->top_element = stack->elements;
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}
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ZEND_API int zend_ptr_stack_num_elements(zend_ptr_stack *stack)
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{
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return stack->top;
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}
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