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The C89 standard and later defines the `<stdarg.h>` header as part of the standard headers [1]. On current systems it is always present and can be included unconditionally. Checking for presence and functionality of the `<stdarg.h>` header and variadic function is not relevant anymore on current systems since this is always available. Also Autoconf suggests relying on at least C89 or above [2] and [3]. The following files were regenerated with re2c 1.0.3: - Zend/zend_language_scanner.c - Zend/zend_language_scanner_defs.h Refs: [1] https://port70.net/~nsz/c/c89/c89-draft.html#4.1.2 [2] http://git.savannah.gnu.org/cgit/autoconf.git/tree/lib/autoconf/headers.m4 [3] https://www.gnu.org/software/autoconf/manual/autoconf-2.69/autoconf.html
126 lines
3.1 KiB
C
126 lines
3.1 KiB
C
/*
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+----------------------------------------------------------------------+
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| Zend Engine |
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+----------------------------------------------------------------------+
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| Copyright (c) 1998-2018 Zend Technologies Ltd. (http://www.zend.com) |
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+----------------------------------------------------------------------+
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| This source file is subject to version 2.00 of the Zend license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.zend.com/license/2_00.txt. |
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| If you did not receive a copy of the Zend license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@zend.com so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Andi Gutmans <andi@zend.com> |
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| Zeev Suraski <zeev@zend.com> |
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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, zend_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, 0);
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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 *), zend_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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/*
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* Local variables:
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* tab-width: 4
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* c-basic-offset: 4
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* indent-tabs-mode: t
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* End:
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* vim600: sw=4 ts=4 fdm=marker
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* vim<600: sw=4 ts=4
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*/
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