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Diffstat (limited to 'Zend/zend_objects.c')
| -rw-r--r-- | Zend/zend_objects.c | 241 |
1 files changed, 241 insertions, 0 deletions
diff --git a/Zend/zend_objects.c b/Zend/zend_objects.c new file mode 100644 index 0000000..ce62844 --- /dev/null +++ b/Zend/zend_objects.c @@ -0,0 +1,241 @@ +/* + +----------------------------------------------------------------------+ + | Zend Engine | + +----------------------------------------------------------------------+ + | Copyright (c) 1998-2013 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@zend.com> | + | Zeev Suraski <zeev@zend.com> | + +----------------------------------------------------------------------+ +*/ + +/* $Id$ */ + +#include "zend.h" +#include "zend_globals.h" +#include "zend_variables.h" +#include "zend_API.h" +#include "zend_interfaces.h" +#include "zend_exceptions.h" + +ZEND_API void zend_object_std_init(zend_object *object, zend_class_entry *ce TSRMLS_DC) +{ + object->ce = ce; + object->properties = NULL; + object->properties_table = NULL; + object->guards = NULL; +} + +ZEND_API void zend_object_std_dtor(zend_object *object TSRMLS_DC) +{ + if (object->guards) { + zend_hash_destroy(object->guards); + FREE_HASHTABLE(object->guards); + } + if (object->properties) { + zend_hash_destroy(object->properties); + FREE_HASHTABLE(object->properties); + if (object->properties_table) { + efree(object->properties_table); + } + } else if (object->properties_table) { + int i; + + for (i = 0; i < object->ce->default_properties_count; i++) { + if (object->properties_table[i]) { + zval_ptr_dtor(&object->properties_table[i]); + } + } + efree(object->properties_table); + } +} + +ZEND_API void zend_objects_destroy_object(zend_object *object, zend_object_handle handle TSRMLS_DC) +{ + zend_function *destructor = object ? object->ce->destructor : NULL; + + if (destructor) { + zval *old_exception; + zval *obj; + zend_object_store_bucket *obj_bucket; + + if (destructor->op_array.fn_flags & (ZEND_ACC_PRIVATE|ZEND_ACC_PROTECTED)) { + if (destructor->op_array.fn_flags & ZEND_ACC_PRIVATE) { + /* Ensure that if we're calling a private function, we're allowed to do so. + */ + if (object->ce != EG(scope)) { + zend_class_entry *ce = object->ce; + + zend_error(EG(in_execution) ? E_ERROR : E_WARNING, + "Call to private %s::__destruct() from context '%s'%s", + ce->name, + EG(scope) ? EG(scope)->name : "", + EG(in_execution) ? "" : " during shutdown ignored"); + return; + } + } else { + /* Ensure that if we're calling a protected function, we're allowed to do so. + */ + if (!zend_check_protected(zend_get_function_root_class(destructor), EG(scope))) { + zend_class_entry *ce = object->ce; + + zend_error(EG(in_execution) ? E_ERROR : E_WARNING, + "Call to protected %s::__destruct() from context '%s'%s", + ce->name, + EG(scope) ? EG(scope)->name : "", + EG(in_execution) ? "" : " during shutdown ignored"); + return; + } + } + } + + MAKE_STD_ZVAL(obj); + Z_TYPE_P(obj) = IS_OBJECT; + Z_OBJ_HANDLE_P(obj) = handle; + obj_bucket = &EG(objects_store).object_buckets[handle]; + if (!obj_bucket->bucket.obj.handlers) { + obj_bucket->bucket.obj.handlers = &std_object_handlers; + } + Z_OBJ_HT_P(obj) = obj_bucket->bucket.obj.handlers; + zval_copy_ctor(obj); + + /* Make sure that destructors are protected from previously thrown exceptions. + * For example, if an exception was thrown in a function and when the function's + * local variable destruction results in a destructor being called. + */ + old_exception = NULL; + if (EG(exception)) { + if (Z_OBJ_HANDLE_P(EG(exception)) == handle) { + zend_error(E_ERROR, "Attempt to destruct pending exception"); + } else { + old_exception = EG(exception); + EG(exception) = NULL; + } + } + zend_call_method_with_0_params(&obj, object->ce, &destructor, ZEND_DESTRUCTOR_FUNC_NAME, NULL); + if (old_exception) { + if (EG(exception)) { + zend_exception_set_previous(EG(exception), old_exception TSRMLS_CC); + } else { + EG(exception) = old_exception; + } + } + zval_ptr_dtor(&obj); + } +} + +ZEND_API void zend_objects_free_object_storage(zend_object *object TSRMLS_DC) +{ + zend_object_std_dtor(object TSRMLS_CC); + efree(object); +} + +ZEND_API zend_object_value zend_objects_new(zend_object **object, zend_class_entry *class_type TSRMLS_DC) +{ + zend_object_value retval; + + *object = emalloc(sizeof(zend_object)); + (*object)->ce = class_type; + (*object)->properties = NULL; + (*object)->properties_table = NULL; + (*object)->guards = NULL; + retval.handle = zend_objects_store_put(*object, (zend_objects_store_dtor_t) zend_objects_destroy_object, (zend_objects_free_object_storage_t) zend_objects_free_object_storage, NULL TSRMLS_CC); + retval.handlers = &std_object_handlers; + return retval; +} + +ZEND_API zend_object *zend_objects_get_address(const zval *zobject TSRMLS_DC) +{ + return (zend_object *)zend_object_store_get_object(zobject TSRMLS_CC); +} + +ZEND_API void zend_objects_clone_members(zend_object *new_object, zend_object_value new_obj_val, zend_object *old_object, zend_object_handle handle TSRMLS_DC) +{ + int i; + + if (old_object->properties_table) { + if (!new_object->properties_table) { + new_object->properties_table = emalloc(sizeof(zval*) * old_object->ce->default_properties_count); + memset(new_object->properties_table, 0, sizeof(zval*) * old_object->ce->default_properties_count); + } + for (i = 0; i < old_object->ce->default_properties_count; i++) { + if (!new_object->properties) { + if (new_object->properties_table[i]) { + zval_ptr_dtor(&new_object->properties_table[i]); + } + } + if (!old_object->properties) { + new_object->properties_table[i] = old_object->properties_table[i]; + if (new_object->properties_table[i]) { + Z_ADDREF_P(new_object->properties_table[i]); + } + } + } + } + if (old_object->properties) { + if (!new_object->properties) { + ALLOC_HASHTABLE(new_object->properties); + zend_hash_init(new_object->properties, 0, NULL, ZVAL_PTR_DTOR, 0); + } + zend_hash_copy(new_object->properties, old_object->properties, (copy_ctor_func_t) zval_add_ref, (void *) NULL /* Not used anymore */, sizeof(zval *)); + if (old_object->properties_table) { + HashPosition pos; + zend_property_info *prop_info; + for (zend_hash_internal_pointer_reset_ex(&old_object->ce->properties_info, &pos); + zend_hash_get_current_data_ex(&old_object->ce->properties_info, (void**)&prop_info, &pos) == SUCCESS; + zend_hash_move_forward_ex(&old_object->ce->properties_info, &pos)) { + if ((prop_info->flags & ZEND_ACC_STATIC) == 0) { + if (zend_hash_quick_find(new_object->properties, prop_info->name, prop_info->name_length+1, prop_info->h, (void**)&new_object->properties_table[prop_info->offset]) == FAILURE) { + new_object->properties_table[prop_info->offset] = NULL; + } + } + } + } + } + + if (old_object->ce->clone) { + zval *new_obj; + + MAKE_STD_ZVAL(new_obj); + new_obj->type = IS_OBJECT; + new_obj->value.obj = new_obj_val; + zval_copy_ctor(new_obj); + + zend_call_method_with_0_params(&new_obj, old_object->ce, &old_object->ce->clone, ZEND_CLONE_FUNC_NAME, NULL); + + zval_ptr_dtor(&new_obj); + } +} + +ZEND_API zend_object_value zend_objects_clone_obj(zval *zobject TSRMLS_DC) +{ + zend_object_value new_obj_val; + zend_object *old_object; + zend_object *new_object; + zend_object_handle handle = Z_OBJ_HANDLE_P(zobject); + + /* assume that create isn't overwritten, so when clone depends on the + * overwritten one then it must itself be overwritten */ + old_object = zend_objects_get_address(zobject TSRMLS_CC); + new_obj_val = zend_objects_new(&new_object, old_object->ce TSRMLS_CC); + + zend_objects_clone_members(new_object, new_obj_val, old_object, handle TSRMLS_CC); + + return new_obj_val; +} + +/* + * Local variables: + * tab-width: 4 + * c-basic-offset: 4 + * indent-tabs-mode: t + * End: + */ |