1: /*
2: +----------------------------------------------------------------------+
3: | Zend Engine |
4: +----------------------------------------------------------------------+
5: | Copyright (c) 1998-2012 Zend Technologies Ltd. (http://www.zend.com) |
6: +----------------------------------------------------------------------+
7: | This source file is subject to version 2.00 of the Zend license, |
8: | that is bundled with this package in the file LICENSE, and is |
9: | available through the world-wide-web at the following url: |
10: | http://www.zend.com/license/2_00.txt. |
11: | If you did not receive a copy of the Zend license and are unable to |
12: | obtain it through the world-wide-web, please send a note to |
13: | license@zend.com so we can mail you a copy immediately. |
14: +----------------------------------------------------------------------+
15: | Authors: Andi Gutmans <andi@zend.com> |
16: | Zeev Suraski <zeev@zend.com> |
17: +----------------------------------------------------------------------+
18: */
19:
20: /* $Id: zend_objects.c,v 1.1.1.1 2012/02/21 23:47:52 misho Exp $ */
21:
22: #include "zend.h"
23: #include "zend_globals.h"
24: #include "zend_variables.h"
25: #include "zend_API.h"
26: #include "zend_interfaces.h"
27: #include "zend_exceptions.h"
28:
29: ZEND_API void zend_object_std_init(zend_object *object, zend_class_entry *ce TSRMLS_DC)
30: {
31: ALLOC_HASHTABLE(object->properties);
32: zend_hash_init(object->properties, 0, NULL, ZVAL_PTR_DTOR, 0);
33:
34: object->ce = ce;
35: object->guards = NULL;
36: }
37:
38: ZEND_API void zend_object_std_dtor(zend_object *object TSRMLS_DC)
39: {
40: if (object->guards) {
41: zend_hash_destroy(object->guards);
42: FREE_HASHTABLE(object->guards);
43: }
44: if (object->properties) {
45: zend_hash_destroy(object->properties);
46: FREE_HASHTABLE(object->properties);
47: }
48: }
49:
50: ZEND_API void zend_objects_destroy_object(zend_object *object, zend_object_handle handle TSRMLS_DC)
51: {
52: zend_function *destructor = object ? object->ce->destructor : NULL;
53:
54: if (destructor) {
55: zval *old_exception;
56: zval *obj;
57: zend_object_store_bucket *obj_bucket;
58:
59: if (destructor->op_array.fn_flags & (ZEND_ACC_PRIVATE|ZEND_ACC_PROTECTED)) {
60: if (destructor->op_array.fn_flags & ZEND_ACC_PRIVATE) {
61: /* Ensure that if we're calling a private function, we're allowed to do so.
62: */
63: if (object->ce != EG(scope)) {
64: zend_class_entry *ce = object->ce;
65:
66: zend_error(EG(in_execution) ? E_ERROR : E_WARNING,
67: "Call to private %s::__destruct() from context '%s'%s",
68: ce->name,
69: EG(scope) ? EG(scope)->name : "",
70: EG(in_execution) ? "" : " during shutdown ignored");
71: return;
72: }
73: } else {
74: /* Ensure that if we're calling a protected function, we're allowed to do so.
75: */
76: if (!zend_check_protected(destructor->common.scope, EG(scope))) {
77: zend_class_entry *ce = object->ce;
78:
79: zend_error(EG(in_execution) ? E_ERROR : E_WARNING,
80: "Call to protected %s::__destruct() from context '%s'%s",
81: ce->name,
82: EG(scope) ? EG(scope)->name : "",
83: EG(in_execution) ? "" : " during shutdown ignored");
84: return;
85: }
86: }
87: }
88:
89: MAKE_STD_ZVAL(obj);
90: Z_TYPE_P(obj) = IS_OBJECT;
91: Z_OBJ_HANDLE_P(obj) = handle;
92: obj_bucket = &EG(objects_store).object_buckets[handle];
93: if (!obj_bucket->bucket.obj.handlers) {
94: obj_bucket->bucket.obj.handlers = &std_object_handlers;
95: }
96: Z_OBJ_HT_P(obj) = obj_bucket->bucket.obj.handlers;
97: zval_copy_ctor(obj);
98:
99: /* Make sure that destructors are protected from previously thrown exceptions.
100: * For example, if an exception was thrown in a function and when the function's
101: * local variable destruction results in a destructor being called.
102: */
103: old_exception = NULL;
104: if (EG(exception)) {
105: if (Z_OBJ_HANDLE_P(EG(exception)) == handle) {
106: zend_error(E_ERROR, "Attempt to destruct pending exception");
107: } else {
108: old_exception = EG(exception);
109: EG(exception) = NULL;
110: }
111: }
112: zend_call_method_with_0_params(&obj, object->ce, &destructor, ZEND_DESTRUCTOR_FUNC_NAME, NULL);
113: if (old_exception) {
114: if (EG(exception)) {
115: zend_exception_set_previous(EG(exception), old_exception TSRMLS_CC);
116: } else {
117: EG(exception) = old_exception;
118: }
119: }
120: zval_ptr_dtor(&obj);
121: }
122: }
123:
124: ZEND_API void zend_objects_free_object_storage(zend_object *object TSRMLS_DC)
125: {
126: zend_object_std_dtor(object TSRMLS_CC);
127: efree(object);
128: }
129:
130: ZEND_API zend_object_value zend_objects_new(zend_object **object, zend_class_entry *class_type TSRMLS_DC)
131: {
132: zend_object_value retval;
133:
134: *object = emalloc(sizeof(zend_object));
135: (*object)->ce = class_type;
136: 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);
137: retval.handlers = &std_object_handlers;
138: (*object)->guards = NULL;
139: return retval;
140: }
141:
142: ZEND_API zend_object *zend_objects_get_address(const zval *zobject TSRMLS_DC)
143: {
144: return (zend_object *)zend_object_store_get_object(zobject TSRMLS_CC);
145: }
146:
147: 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)
148: {
149: zend_hash_copy(new_object->properties, old_object->properties, zval_copy_property_ctor(old_object->ce), (void *) NULL /* Not used anymore */, sizeof(zval *));
150:
151: if (old_object->ce->clone) {
152: zval *new_obj;
153:
154: MAKE_STD_ZVAL(new_obj);
155: new_obj->type = IS_OBJECT;
156: new_obj->value.obj = new_obj_val;
157: zval_copy_ctor(new_obj);
158:
159: zend_call_method_with_0_params(&new_obj, old_object->ce, &old_object->ce->clone, ZEND_CLONE_FUNC_NAME, NULL);
160:
161: zval_ptr_dtor(&new_obj);
162: }
163: }
164:
165: ZEND_API zend_object_value zend_objects_clone_obj(zval *zobject TSRMLS_DC)
166: {
167: zend_object_value new_obj_val;
168: zend_object *old_object;
169: zend_object *new_object;
170: zend_object_handle handle = Z_OBJ_HANDLE_P(zobject);
171:
172: /* assume that create isn't overwritten, so when clone depends on the
173: * overwritten one then it must itself be overwritten */
174: old_object = zend_objects_get_address(zobject TSRMLS_CC);
175: new_obj_val = zend_objects_new(&new_object, old_object->ce TSRMLS_CC);
176:
177: ALLOC_HASHTABLE(new_object->properties);
178: zend_hash_init(new_object->properties, 0, NULL, ZVAL_PTR_DTOR, 0);
179:
180: zend_objects_clone_members(new_object, new_obj_val, old_object, handle TSRMLS_CC);
181:
182: return new_obj_val;
183: }
184:
185: /*
186: * Local variables:
187: * tab-width: 4
188: * c-basic-offset: 4
189: * indent-tabs-mode: t
190: * End:
191: */
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