mirror of
https://github.com/php/php-src.git
synced 2024-09-22 10:27:25 +00:00
330 lines
7.9 KiB
C
330 lines
7.9 KiB
C
/*
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+----------------------------------------------------------------------+
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| Zend Engine |
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+----------------------------------------------------------------------+
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| Copyright (c) 1998-2016 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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| Dmitry Stogov <dmitry@zend.com> |
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+----------------------------------------------------------------------+
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*/
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/* $Id$ */
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#include <stdio.h>
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#include "zend.h"
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#include "zend_API.h"
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#include "zend_ast.h"
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#include "zend_globals.h"
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#include "zend_constants.h"
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#include "zend_list.h"
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ZEND_API void ZEND_FASTCALL _zval_dtor_func(zend_refcounted *p ZEND_FILE_LINE_DC)
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{
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switch (GC_TYPE(p)) {
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case IS_STRING:
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case IS_CONSTANT: {
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zend_string *str = (zend_string*)p;
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CHECK_ZVAL_STRING_REL(str);
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zend_string_release(str);
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break;
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}
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case IS_ARRAY: {
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zend_array *arr = (zend_array*)p;
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ZEND_ASSERT(GC_REFCOUNT(arr) <= 1);
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zend_array_destroy(arr);
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break;
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}
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case IS_CONSTANT_AST: {
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zend_ast_ref *ast = (zend_ast_ref*)p;
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zend_ast_destroy_and_free(ast->ast);
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efree_size(ast, sizeof(zend_ast_ref));
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break;
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}
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case IS_OBJECT: {
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zend_object *obj = (zend_object*)p;
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OBJ_RELEASE(obj);
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break;
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}
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case IS_RESOURCE: {
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zend_resource *res = (zend_resource*)p;
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if (--GC_REFCOUNT(res) == 0) {
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/* destroy resource */
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zend_list_free(res);
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}
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break;
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}
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case IS_REFERENCE: {
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zend_reference *ref = (zend_reference*)p;
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if (--GC_REFCOUNT(ref) == 0) {
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i_zval_ptr_dtor(&ref->val ZEND_FILE_LINE_RELAY_CC);
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efree_size(ref, sizeof(zend_reference));
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}
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break;
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}
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default:
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break;
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}
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}
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ZEND_API void ZEND_FASTCALL _zval_dtor_func_for_ptr(zend_refcounted *p ZEND_FILE_LINE_DC)
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{
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switch (GC_TYPE(p)) {
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case IS_STRING:
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case IS_CONSTANT: {
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zend_string *str = (zend_string*)p;
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CHECK_ZVAL_STRING_REL(str);
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zend_string_free(str);
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break;
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}
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case IS_ARRAY: {
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zend_array *arr = (zend_array*)p;
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zend_array_destroy(arr);
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break;
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}
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case IS_CONSTANT_AST: {
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zend_ast_ref *ast = (zend_ast_ref*)p;
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zend_ast_destroy_and_free(ast->ast);
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efree_size(ast, sizeof(zend_ast_ref));
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break;
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}
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case IS_OBJECT: {
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zend_object *obj = (zend_object*)p;
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zend_objects_store_del(obj);
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break;
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}
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case IS_RESOURCE: {
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zend_resource *res = (zend_resource*)p;
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/* destroy resource */
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zend_list_free(res);
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break;
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}
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case IS_REFERENCE: {
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zend_reference *ref = (zend_reference*)p;
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i_zval_ptr_dtor(&ref->val ZEND_FILE_LINE_RELAY_CC);
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efree_size(ref, sizeof(zend_reference));
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break;
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}
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default:
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break;
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}
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}
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ZEND_API void _zval_internal_dtor(zval *zvalue ZEND_FILE_LINE_DC)
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{
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switch (Z_TYPE_P(zvalue)) {
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case IS_STRING:
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case IS_CONSTANT:
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CHECK_ZVAL_STRING_REL(Z_STR_P(zvalue));
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zend_string_release(Z_STR_P(zvalue));
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break;
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case IS_ARRAY:
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case IS_CONSTANT_AST:
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case IS_OBJECT:
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case IS_RESOURCE:
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zend_error_noreturn(E_CORE_ERROR, "Internal zval's can't be arrays, objects or resources");
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break;
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case IS_REFERENCE: {
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zend_reference *ref = (zend_reference*)Z_REF_P(zvalue);
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zval_internal_ptr_dtor(&ref->val);
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free(ref);
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break;
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}
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case IS_LONG:
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case IS_DOUBLE:
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case IS_FALSE:
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case IS_TRUE:
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case IS_NULL:
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default:
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break;
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}
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}
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ZEND_API void _zval_internal_dtor_for_ptr(zval *zvalue ZEND_FILE_LINE_DC)
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{
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switch (Z_TYPE_P(zvalue)) {
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case IS_STRING:
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case IS_CONSTANT:
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CHECK_ZVAL_STRING_REL(Z_STR_P(zvalue));
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zend_string_free(Z_STR_P(zvalue));
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break;
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case IS_ARRAY:
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case IS_CONSTANT_AST:
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case IS_OBJECT:
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case IS_RESOURCE:
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zend_error_noreturn(E_CORE_ERROR, "Internal zval's can't be arrays, objects or resources");
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break;
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case IS_REFERENCE: {
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zend_reference *ref = (zend_reference*)Z_REF_P(zvalue);
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zval_internal_ptr_dtor(&ref->val);
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free(ref);
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break;
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}
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case IS_LONG:
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case IS_DOUBLE:
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case IS_FALSE:
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case IS_TRUE:
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case IS_NULL:
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default:
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break;
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}
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}
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/* This function should only be used as a copy constructor, i.e. it
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* should only be called AFTER a zval has been copied to another
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* location using ZVAL_COPY_VALUE. Do not call it before copying,
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* otherwise a reference may be leaked. */
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ZEND_API void zval_add_ref(zval *p)
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{
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if (Z_REFCOUNTED_P(p)) {
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if (Z_ISREF_P(p) && Z_REFCOUNT_P(p) == 1) {
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ZVAL_COPY(p, Z_REFVAL_P(p));
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} else {
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Z_ADDREF_P(p);
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}
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}
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}
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ZEND_API void zval_add_ref_unref(zval *p)
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{
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if (Z_REFCOUNTED_P(p)) {
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if (Z_ISREF_P(p)) {
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ZVAL_COPY(p, Z_REFVAL_P(p));
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} else {
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Z_ADDREF_P(p);
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}
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}
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}
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ZEND_API void ZEND_FASTCALL _zval_copy_ctor_func(zval *zvalue ZEND_FILE_LINE_DC)
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{
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if (EXPECTED(Z_TYPE_P(zvalue) == IS_ARRAY)) {
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ZVAL_ARR(zvalue, zend_array_dup(Z_ARRVAL_P(zvalue)));
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} else if (EXPECTED(Z_TYPE_P(zvalue) == IS_STRING) ||
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EXPECTED(Z_TYPE_P(zvalue) == IS_CONSTANT)) {
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CHECK_ZVAL_STRING_REL(Z_STR_P(zvalue));
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Z_STR_P(zvalue) = zend_string_dup(Z_STR_P(zvalue), 0);
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} else if (EXPECTED(Z_TYPE_P(zvalue) == IS_CONSTANT_AST)) {
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zend_ast_ref *ast = emalloc(sizeof(zend_ast_ref));
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GC_REFCOUNT(ast) = 1;
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GC_TYPE_INFO(ast) = IS_CONSTANT_AST;
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ast->ast = zend_ast_copy(Z_ASTVAL_P(zvalue));
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Z_AST_P(zvalue) = ast;
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}
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}
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ZEND_API size_t zend_print_variable(zval *var)
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{
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return zend_print_zval(var, 0);
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}
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ZEND_API void _zval_dtor_wrapper(zval *zvalue)
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{
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zval_dtor(zvalue);
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}
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#if ZEND_DEBUG
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ZEND_API void _zval_internal_dtor_wrapper(zval *zvalue)
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{
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zval_internal_dtor(zvalue);
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}
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ZEND_API void _zval_ptr_dtor_wrapper(zval *zval_ptr)
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{
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i_zval_ptr_dtor(zval_ptr ZEND_FILE_LINE_CC);
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}
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ZEND_API void _zval_internal_ptr_dtor_wrapper(zval *zval_ptr)
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{
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zval_internal_ptr_dtor(zval_ptr);
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}
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#endif
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ZEND_API int zval_copy_static_var(zval *p, int num_args, va_list args, zend_hash_key *key) /* {{{ */
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{
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zend_array *symbol_table;
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HashTable *target = va_arg(args, HashTable*);
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zend_bool is_ref;
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zval tmp;
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if (Z_CONST_FLAGS_P(p) & (IS_LEXICAL_VAR|IS_LEXICAL_REF)) {
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is_ref = Z_CONST_FLAGS_P(p) & IS_LEXICAL_REF;
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symbol_table = zend_rebuild_symbol_table();
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p = zend_hash_find(symbol_table, key->key);
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if (!p) {
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p = &tmp;
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ZVAL_NULL(&tmp);
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if (is_ref) {
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ZVAL_NEW_REF(&tmp, &tmp);
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zend_hash_add_new(symbol_table, key->key, &tmp);
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Z_ADDREF_P(p);
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} else {
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zend_error(E_NOTICE,"Undefined variable: %s", ZSTR_VAL(key->key));
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}
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} else {
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if (Z_TYPE_P(p) == IS_INDIRECT) {
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p = Z_INDIRECT_P(p);
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if (Z_TYPE_P(p) == IS_UNDEF) {
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if (!is_ref) {
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zend_error(E_NOTICE,"Undefined variable: %s", ZSTR_VAL(key->key));
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p = &tmp;
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ZVAL_NULL(&tmp);
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} else {
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ZVAL_NULL(p);
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}
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}
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}
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if (is_ref) {
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ZVAL_MAKE_REF(p);
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Z_ADDREF_P(p);
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} else if (Z_ISREF_P(p)) {
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ZVAL_DUP(&tmp, Z_REFVAL_P(p));
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p = &tmp;
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} else if (Z_REFCOUNTED_P(p)) {
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Z_ADDREF_P(p);
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}
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}
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} else if (Z_REFCOUNTED_P(p)) {
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Z_ADDREF_P(p);
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}
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zend_hash_add(target, key->key, p);
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return ZEND_HASH_APPLY_KEEP;
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}
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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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*/
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