xref: /PHP-7.0/Zend/zend_interfaces.c (revision 478f119a)
1 /*
2    +----------------------------------------------------------------------+
3    | Zend Engine                                                          |
4    +----------------------------------------------------------------------+
5    | Copyright (c) 1998-2017 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: Marcus Boerger <helly@php.net>                              |
16    +----------------------------------------------------------------------+
17 */
18 
19 /* $Id$ */
20 
21 #include "zend.h"
22 #include "zend_API.h"
23 #include "zend_interfaces.h"
24 #include "zend_exceptions.h"
25 
26 ZEND_API zend_class_entry *zend_ce_traversable;
27 ZEND_API zend_class_entry *zend_ce_aggregate;
28 ZEND_API zend_class_entry *zend_ce_iterator;
29 ZEND_API zend_class_entry *zend_ce_arrayaccess;
30 ZEND_API zend_class_entry *zend_ce_serializable;
31 
32 /* {{{ zend_call_method
33  Only returns the returned zval if retval_ptr != NULL */
zend_call_method(zval * object,zend_class_entry * obj_ce,zend_function ** fn_proxy,const char * function_name,size_t function_name_len,zval * retval_ptr,int param_count,zval * arg1,zval * arg2)34 ZEND_API zval* zend_call_method(zval *object, zend_class_entry *obj_ce, zend_function **fn_proxy, const char *function_name, size_t function_name_len, zval *retval_ptr, int param_count, zval* arg1, zval* arg2)
35 {
36 	int result;
37 	zend_fcall_info fci;
38 	zval retval;
39 	HashTable *function_table;
40 
41 	zval params[2];
42 
43 	if (param_count > 0) {
44 		ZVAL_COPY_VALUE(&params[0], arg1);
45 	}
46 	if (param_count > 1) {
47 		ZVAL_COPY_VALUE(&params[1], arg2);
48 	}
49 
50 	fci.size = sizeof(fci);
51 	/*fci.function_table = NULL; will be read form zend_class_entry of object if needed */
52 	fci.object = (object && Z_TYPE_P(object) == IS_OBJECT) ? Z_OBJ_P(object) : NULL;
53 	ZVAL_STRINGL(&fci.function_name, function_name, function_name_len);
54 	fci.retval = retval_ptr ? retval_ptr : &retval;
55 	fci.param_count = param_count;
56 	fci.params = params;
57 	fci.no_separation = 1;
58 	fci.symbol_table = NULL;
59 
60 	if (!fn_proxy && !obj_ce) {
61 		/* no interest in caching and no information already present that is
62 		 * needed later inside zend_call_function. */
63 		fci.function_table = !object ? EG(function_table) : NULL;
64 		result = zend_call_function(&fci, NULL);
65 		zval_ptr_dtor(&fci.function_name);
66 	} else {
67 		zend_fcall_info_cache fcic;
68 
69 		fcic.initialized = 1;
70 		if (!obj_ce) {
71 			obj_ce = object ? Z_OBJCE_P(object) : NULL;
72 		}
73 		if (obj_ce) {
74 			function_table = &obj_ce->function_table;
75 		} else {
76 			function_table = EG(function_table);
77 		}
78 		if (!fn_proxy || !*fn_proxy) {
79 			if ((fcic.function_handler = zend_hash_find_ptr(function_table, Z_STR(fci.function_name))) == NULL) {
80 				/* error at c-level */
81 				zend_error_noreturn(E_CORE_ERROR, "Couldn't find implementation for method %s%s%s", obj_ce ? ZSTR_VAL(obj_ce->name) : "", obj_ce ? "::" : "", function_name);
82 			}
83 			if (fn_proxy) {
84 				*fn_proxy = fcic.function_handler;
85 			}
86 		} else {
87 			fcic.function_handler = *fn_proxy;
88 		}
89 		fcic.calling_scope = obj_ce;
90 		if (object) {
91 			fcic.called_scope = Z_OBJCE_P(object);
92 		} else {
93 			zend_class_entry *called_scope = zend_get_called_scope(EG(current_execute_data));
94 
95 			if (obj_ce &&
96 			    (!called_scope ||
97 			     !instanceof_function(called_scope, obj_ce))) {
98 				fcic.called_scope = obj_ce;
99 			} else {
100 				fcic.called_scope = called_scope;
101 			}
102 		}
103 		fcic.object = object ? Z_OBJ_P(object) : NULL;
104 		result = zend_call_function(&fci, &fcic);
105 		zval_ptr_dtor(&fci.function_name);
106 	}
107 	if (result == FAILURE) {
108 		/* error at c-level */
109 		if (!obj_ce) {
110 			obj_ce = object ? Z_OBJCE_P(object) : NULL;
111 		}
112 		if (!EG(exception)) {
113 			zend_error_noreturn(E_CORE_ERROR, "Couldn't execute method %s%s%s", obj_ce ? ZSTR_VAL(obj_ce->name) : "", obj_ce ? "::" : "", function_name);
114 		}
115 	}
116 	/* copy arguments back, they might be changed by references */
117 	if (param_count > 0 && Z_ISREF(params[0]) && !Z_ISREF_P(arg1)) {
118 		ZVAL_COPY_VALUE(arg1, &params[0]);
119 	}
120 	if (param_count > 1 && Z_ISREF(params[1]) && !Z_ISREF_P(arg2)) {
121 		ZVAL_COPY_VALUE(arg2, &params[1]);
122 	}
123 	if (!retval_ptr) {
124 		zval_ptr_dtor(&retval);
125 		return NULL;
126 	}
127 	return retval_ptr;
128 }
129 /* }}} */
130 
131 /* iterator interface, c-level functions used by engine */
132 
133 /* {{{ zend_user_it_new_iterator */
zend_user_it_new_iterator(zend_class_entry * ce,zval * object,zval * retval)134 ZEND_API void zend_user_it_new_iterator(zend_class_entry *ce, zval *object, zval *retval)
135 {
136 	zend_call_method_with_0_params(object, ce, &ce->iterator_funcs.zf_new_iterator, "getiterator", retval);
137 }
138 /* }}} */
139 
140 /* {{{ zend_user_it_invalidate_current */
zend_user_it_invalidate_current(zend_object_iterator * _iter)141 ZEND_API void zend_user_it_invalidate_current(zend_object_iterator *_iter)
142 {
143 	zend_user_iterator *iter = (zend_user_iterator*)_iter;
144 
145 	if (!Z_ISUNDEF(iter->value)) {
146 		zval_ptr_dtor(&iter->value);
147 		ZVAL_UNDEF(&iter->value);
148 	}
149 }
150 /* }}} */
151 
152 /* {{{ zend_user_it_dtor */
zend_user_it_dtor(zend_object_iterator * _iter)153 static void zend_user_it_dtor(zend_object_iterator *_iter)
154 {
155 	zend_user_iterator *iter = (zend_user_iterator*)_iter;
156 	zval *object = &iter->it.data;
157 
158 	zend_user_it_invalidate_current(_iter);
159 	zval_ptr_dtor(object);
160 }
161 /* }}} */
162 
163 /* {{{ zend_user_it_valid */
zend_user_it_valid(zend_object_iterator * _iter)164 ZEND_API int zend_user_it_valid(zend_object_iterator *_iter)
165 {
166 	if (_iter) {
167 		zend_user_iterator *iter = (zend_user_iterator*)_iter;
168 		zval *object = &iter->it.data;
169 		zval more;
170 		int result;
171 
172 		zend_call_method_with_0_params(object, iter->ce, &iter->ce->iterator_funcs.zf_valid, "valid", &more);
173 		if (Z_TYPE(more) != IS_UNDEF) {
174 			result = i_zend_is_true(&more);
175 			zval_ptr_dtor(&more);
176 			return result ? SUCCESS : FAILURE;
177 		}
178 	}
179 	return FAILURE;
180 }
181 /* }}} */
182 
183 /* {{{ zend_user_it_get_current_data */
zend_user_it_get_current_data(zend_object_iterator * _iter)184 ZEND_API zval *zend_user_it_get_current_data(zend_object_iterator *_iter)
185 {
186 	zend_user_iterator *iter = (zend_user_iterator*)_iter;
187 	zval *object = &iter->it.data;
188 
189 	if (Z_ISUNDEF(iter->value)) {
190 		zend_call_method_with_0_params(object, iter->ce, &iter->ce->iterator_funcs.zf_current, "current", &iter->value);
191 	}
192 	return &iter->value;
193 }
194 /* }}} */
195 
196 /* {{{ zend_user_it_get_current_key_default */
197 #if 0
198 static int zend_user_it_get_current_key_default(zend_object_iterator *_iter, char **str_key, uint *str_key_len, ulong *int_key)
199 {
200 	*int_key = _iter->index;
201 	return HASH_KEY_IS_LONG;
202 }
203 #endif
204 /* }}} */
205 
206 /* {{{ zend_user_it_get_current_key */
zend_user_it_get_current_key(zend_object_iterator * _iter,zval * key)207 ZEND_API void zend_user_it_get_current_key(zend_object_iterator *_iter, zval *key)
208 {
209 	zend_user_iterator *iter = (zend_user_iterator*)_iter;
210 	zval *object = &iter->it.data;
211 	zval retval;
212 
213 	zend_call_method_with_0_params(object, iter->ce, &iter->ce->iterator_funcs.zf_key, "key", &retval);
214 
215 	if (Z_TYPE(retval) != IS_UNDEF) {
216 		ZVAL_ZVAL(key, &retval, 1, 1);
217 	} else {
218 		if (!EG(exception)) {
219 			zend_error(E_WARNING, "Nothing returned from %s::key()", ZSTR_VAL(iter->ce->name));
220 		}
221 
222 		ZVAL_LONG(key, 0);
223 	}
224 }
225 /* }}} */
226 
227 /* {{{ zend_user_it_move_forward */
zend_user_it_move_forward(zend_object_iterator * _iter)228 ZEND_API void zend_user_it_move_forward(zend_object_iterator *_iter)
229 {
230 	zend_user_iterator *iter = (zend_user_iterator*)_iter;
231 	zval *object = &iter->it.data;
232 
233 	zend_user_it_invalidate_current(_iter);
234 	zend_call_method_with_0_params(object, iter->ce, &iter->ce->iterator_funcs.zf_next, "next", NULL);
235 }
236 /* }}} */
237 
238 /* {{{ zend_user_it_rewind */
zend_user_it_rewind(zend_object_iterator * _iter)239 ZEND_API void zend_user_it_rewind(zend_object_iterator *_iter)
240 {
241 	zend_user_iterator *iter = (zend_user_iterator*)_iter;
242 	zval *object = &iter->it.data;
243 
244 	zend_user_it_invalidate_current(_iter);
245 	zend_call_method_with_0_params(object, iter->ce, &iter->ce->iterator_funcs.zf_rewind, "rewind", NULL);
246 }
247 /* }}} */
248 
249 zend_object_iterator_funcs zend_interface_iterator_funcs_iterator = {
250 	zend_user_it_dtor,
251 	zend_user_it_valid,
252 	zend_user_it_get_current_data,
253 	zend_user_it_get_current_key,
254 	zend_user_it_move_forward,
255 	zend_user_it_rewind,
256 	zend_user_it_invalidate_current
257 };
258 
259 /* {{{ zend_user_it_get_iterator */
zend_user_it_get_iterator(zend_class_entry * ce,zval * object,int by_ref)260 static zend_object_iterator *zend_user_it_get_iterator(zend_class_entry *ce, zval *object, int by_ref)
261 {
262 	zend_user_iterator *iterator;
263 
264 	if (by_ref) {
265 		zend_throw_error(NULL, "An iterator cannot be used with foreach by reference");
266 		return NULL;
267 	}
268 
269 	iterator = emalloc(sizeof(zend_user_iterator));
270 
271 	zend_iterator_init((zend_object_iterator*)iterator);
272 
273 	ZVAL_COPY(&iterator->it.data, object);
274 	iterator->it.funcs = ce->iterator_funcs.funcs;
275 	iterator->ce = Z_OBJCE_P(object);
276 	ZVAL_UNDEF(&iterator->value);
277 	return (zend_object_iterator*)iterator;
278 }
279 /* }}} */
280 
281 /* {{{ zend_user_it_get_new_iterator */
zend_user_it_get_new_iterator(zend_class_entry * ce,zval * object,int by_ref)282 ZEND_API zend_object_iterator *zend_user_it_get_new_iterator(zend_class_entry *ce, zval *object, int by_ref)
283 {
284 	zval iterator;
285 	zend_object_iterator *new_iterator;
286 	zend_class_entry *ce_it;
287 
288 	zend_user_it_new_iterator(ce, object, &iterator);
289 	ce_it = (Z_TYPE(iterator) == IS_OBJECT) ? Z_OBJCE(iterator) : NULL;
290 
291 	if (!ce_it || !ce_it->get_iterator || (ce_it->get_iterator == zend_user_it_get_new_iterator && Z_OBJ(iterator) == Z_OBJ_P(object))) {
292 		if (!EG(exception)) {
293 			zend_throw_exception_ex(NULL, 0, "Objects returned by %s::getIterator() must be traversable or implement interface Iterator", ce ? ZSTR_VAL(ce->name) : ZSTR_VAL(Z_OBJCE_P(object)->name));
294 		}
295 		zval_ptr_dtor(&iterator);
296 		return NULL;
297 	}
298 
299 	new_iterator = ce_it->get_iterator(ce_it, &iterator, by_ref);
300 	zval_ptr_dtor(&iterator);
301 	return new_iterator;
302 }
303 /* }}} */
304 
305 /* {{{ zend_implement_traversable */
zend_implement_traversable(zend_class_entry * interface,zend_class_entry * class_type)306 static int zend_implement_traversable(zend_class_entry *interface, zend_class_entry *class_type)
307 {
308 	/* check that class_type is traversable at c-level or implements at least one of 'aggregate' and 'Iterator' */
309 	uint32_t i;
310 
311 	if (class_type->get_iterator || (class_type->parent && class_type->parent->get_iterator)) {
312 		return SUCCESS;
313 	}
314 	for (i = 0; i < class_type->num_interfaces; i++) {
315 		if (class_type->interfaces[i] == zend_ce_aggregate || class_type->interfaces[i] == zend_ce_iterator) {
316 			return SUCCESS;
317 		}
318 	}
319 	zend_error_noreturn(E_CORE_ERROR, "Class %s must implement interface %s as part of either %s or %s",
320 		ZSTR_VAL(class_type->name),
321 		ZSTR_VAL(zend_ce_traversable->name),
322 		ZSTR_VAL(zend_ce_iterator->name),
323 		ZSTR_VAL(zend_ce_aggregate->name));
324 	return FAILURE;
325 }
326 /* }}} */
327 
328 /* {{{ zend_implement_aggregate */
zend_implement_aggregate(zend_class_entry * interface,zend_class_entry * class_type)329 static int zend_implement_aggregate(zend_class_entry *interface, zend_class_entry *class_type)
330 {
331 	uint32_t i;
332 	int t = -1;
333 
334 	if (class_type->get_iterator) {
335 		if (class_type->type == ZEND_INTERNAL_CLASS) {
336 			/* inheritance ensures the class has necessary userland methods */
337 			return SUCCESS;
338 		} else if (class_type->get_iterator != zend_user_it_get_new_iterator) {
339 			/* c-level get_iterator cannot be changed (exception being only Traversable is implmented) */
340 			if (class_type->num_interfaces) {
341 				for (i = 0; i < class_type->num_interfaces; i++) {
342 					if (class_type->interfaces[i] == zend_ce_iterator) {
343 						zend_error_noreturn(E_ERROR, "Class %s cannot implement both %s and %s at the same time",
344 									ZSTR_VAL(class_type->name),
345 									ZSTR_VAL(interface->name),
346 									ZSTR_VAL(zend_ce_iterator->name));
347 						return FAILURE;
348 					}
349 					if (class_type->interfaces[i] == zend_ce_traversable) {
350 						t = i;
351 					}
352 				}
353 			}
354 			if (t == -1) {
355 				return FAILURE;
356 			}
357 		}
358 	}
359 	class_type->iterator_funcs.zf_new_iterator = NULL;
360 	class_type->get_iterator = zend_user_it_get_new_iterator;
361 	return SUCCESS;
362 }
363 /* }}} */
364 
365 /* {{{ zend_implement_iterator */
zend_implement_iterator(zend_class_entry * interface,zend_class_entry * class_type)366 static int zend_implement_iterator(zend_class_entry *interface, zend_class_entry *class_type)
367 {
368 	if (class_type->get_iterator && class_type->get_iterator != zend_user_it_get_iterator) {
369 		if (class_type->type == ZEND_INTERNAL_CLASS) {
370 			/* inheritance ensures the class has the necessary userland methods */
371 			return SUCCESS;
372 		} else {
373 			/* c-level get_iterator cannot be changed */
374 			if (class_type->get_iterator == zend_user_it_get_new_iterator) {
375 				zend_error_noreturn(E_ERROR, "Class %s cannot implement both %s and %s at the same time",
376 							ZSTR_VAL(class_type->name),
377 							ZSTR_VAL(interface->name),
378 							ZSTR_VAL(zend_ce_aggregate->name));
379 			}
380 			return FAILURE;
381 		}
382 	}
383 	class_type->get_iterator = zend_user_it_get_iterator;
384 	class_type->iterator_funcs.zf_valid = NULL;
385 	class_type->iterator_funcs.zf_current = NULL;
386 	class_type->iterator_funcs.zf_key = NULL;
387 	class_type->iterator_funcs.zf_next = NULL;
388 	class_type->iterator_funcs.zf_rewind = NULL;
389 	if (!class_type->iterator_funcs.funcs) {
390 		class_type->iterator_funcs.funcs = &zend_interface_iterator_funcs_iterator;
391 	}
392 	return SUCCESS;
393 }
394 /* }}} */
395 
396 /* {{{ zend_implement_arrayaccess */
zend_implement_arrayaccess(zend_class_entry * interface,zend_class_entry * class_type)397 static int zend_implement_arrayaccess(zend_class_entry *interface, zend_class_entry *class_type)
398 {
399 #if 0
400 	/* get ht from ce */
401 	if (ht->read_dimension != zend_std_read_dimension
402 	||  ht->write_dimension != zend_std_write_dimension
403 	||  ht->has_dimension != zend_std_has_dimension
404 	||  ht->unset_dimension != zend_std_unset_dimension) {
405 		return FAILURE;
406 	}
407 #endif
408 	return SUCCESS;
409 }
410 /* }}}*/
411 
412 /* {{{ zend_user_serialize */
zend_user_serialize(zval * object,unsigned char ** buffer,size_t * buf_len,zend_serialize_data * data)413 ZEND_API int zend_user_serialize(zval *object, unsigned char **buffer, size_t *buf_len, zend_serialize_data *data)
414 {
415 	zend_class_entry * ce = Z_OBJCE_P(object);
416 	zval retval;
417 	int result;
418 
419 	zend_call_method_with_0_params(object, ce, &ce->serialize_func, "serialize", &retval);
420 
421 
422 	if (Z_TYPE(retval) == IS_UNDEF || EG(exception)) {
423 		result = FAILURE;
424 	} else {
425 		switch(Z_TYPE(retval)) {
426 		case IS_NULL:
427 			/* we could also make this '*buf_len = 0' but this allows to skip variables */
428 			zval_ptr_dtor(&retval);
429 			return FAILURE;
430 		case IS_STRING:
431 			*buffer = (unsigned char*)estrndup(Z_STRVAL(retval), Z_STRLEN(retval));
432 			*buf_len = Z_STRLEN(retval);
433 			result = SUCCESS;
434 			break;
435 		default: /* failure */
436 			result = FAILURE;
437 			break;
438 		}
439 		zval_ptr_dtor(&retval);
440 	}
441 
442 	if (result == FAILURE && !EG(exception)) {
443 		zend_throw_exception_ex(NULL, 0, "%s::serialize() must return a string or NULL", ZSTR_VAL(ce->name));
444 	}
445 	return result;
446 }
447 /* }}} */
448 
449 /* {{{ zend_user_unserialize */
zend_user_unserialize(zval * object,zend_class_entry * ce,const unsigned char * buf,size_t buf_len,zend_unserialize_data * data)450 ZEND_API int zend_user_unserialize(zval *object, zend_class_entry *ce, const unsigned char *buf, size_t buf_len, zend_unserialize_data *data)
451 {
452 	zval zdata;
453 
454 	if (UNEXPECTED(object_init_ex(object, ce) != SUCCESS)) {
455 		return FAILURE;
456 	}
457 
458 	ZVAL_STRINGL(&zdata, (char*)buf, buf_len);
459 
460 	zend_call_method_with_1_params(object, ce, &ce->unserialize_func, "unserialize", NULL, &zdata);
461 
462 	zval_ptr_dtor(&zdata);
463 
464 	if (EG(exception)) {
465 		return FAILURE;
466 	} else {
467 		return SUCCESS;
468 	}
469 }
470 /* }}} */
471 
zend_class_serialize_deny(zval * object,unsigned char ** buffer,size_t * buf_len,zend_serialize_data * data)472 ZEND_API int zend_class_serialize_deny(zval *object, unsigned char **buffer, size_t *buf_len, zend_serialize_data *data) /* {{{ */
473 {
474 	zend_class_entry *ce = Z_OBJCE_P(object);
475 	zend_throw_exception_ex(NULL, 0, "Serialization of '%s' is not allowed", ZSTR_VAL(ce->name));
476 	return FAILURE;
477 }
478 /* }}} */
479 
zend_class_unserialize_deny(zval * object,zend_class_entry * ce,const unsigned char * buf,size_t buf_len,zend_unserialize_data * data)480 ZEND_API int zend_class_unserialize_deny(zval *object, zend_class_entry *ce, const unsigned char *buf, size_t buf_len, zend_unserialize_data *data) /* {{{ */
481 {
482 	zend_throw_exception_ex(NULL, 0, "Unserialization of '%s' is not allowed", ZSTR_VAL(ce->name));
483 	return FAILURE;
484 }
485 /* }}} */
486 
487 /* {{{ zend_implement_serializable */
zend_implement_serializable(zend_class_entry * interface,zend_class_entry * class_type)488 static int zend_implement_serializable(zend_class_entry *interface, zend_class_entry *class_type)
489 {
490 	if (class_type->parent
491 		&& (class_type->parent->serialize || class_type->parent->unserialize)
492 		&& !instanceof_function_ex(class_type->parent, zend_ce_serializable, 1)) {
493 		return FAILURE;
494 	}
495 	if (!class_type->serialize) {
496 		class_type->serialize = zend_user_serialize;
497 	}
498 	if (!class_type->unserialize) {
499 		class_type->unserialize = zend_user_unserialize;
500 	}
501 	return SUCCESS;
502 }
503 /* }}}*/
504 
505 /* {{{ function tables */
506 const zend_function_entry zend_funcs_aggregate[] = {
507 	ZEND_ABSTRACT_ME(iterator, getIterator, NULL)
508 	ZEND_FE_END
509 };
510 
511 const zend_function_entry zend_funcs_iterator[] = {
512 	ZEND_ABSTRACT_ME(iterator, current,  NULL)
513 	ZEND_ABSTRACT_ME(iterator, next,     NULL)
514 	ZEND_ABSTRACT_ME(iterator, key,      NULL)
515 	ZEND_ABSTRACT_ME(iterator, valid,    NULL)
516 	ZEND_ABSTRACT_ME(iterator, rewind,   NULL)
517 	ZEND_FE_END
518 };
519 
520 const zend_function_entry *zend_funcs_traversable    = NULL;
521 
522 ZEND_BEGIN_ARG_INFO_EX(arginfo_arrayaccess_offset, 0, 0, 1)
523 	ZEND_ARG_INFO(0, offset)
524 ZEND_END_ARG_INFO()
525 
526 ZEND_BEGIN_ARG_INFO_EX(arginfo_arrayaccess_offset_get, 0, 0, 1) /* actually this should be return by ref but atm cannot be */
527 	ZEND_ARG_INFO(0, offset)
528 ZEND_END_ARG_INFO()
529 
530 ZEND_BEGIN_ARG_INFO_EX(arginfo_arrayaccess_offset_value, 0, 0, 2)
531 	ZEND_ARG_INFO(0, offset)
532 	ZEND_ARG_INFO(0, value)
533 ZEND_END_ARG_INFO()
534 
535 const zend_function_entry zend_funcs_arrayaccess[] = {
536 	ZEND_ABSTRACT_ME(arrayaccess, offsetExists, arginfo_arrayaccess_offset)
537 	ZEND_ABSTRACT_ME(arrayaccess, offsetGet,    arginfo_arrayaccess_offset_get)
538 	ZEND_ABSTRACT_ME(arrayaccess, offsetSet,    arginfo_arrayaccess_offset_value)
539 	ZEND_ABSTRACT_ME(arrayaccess, offsetUnset,  arginfo_arrayaccess_offset)
540 	ZEND_FE_END
541 };
542 
543 ZEND_BEGIN_ARG_INFO(arginfo_serializable_serialize, 0)
544 	ZEND_ARG_INFO(0, serialized)
545 ZEND_END_ARG_INFO()
546 
547 const zend_function_entry zend_funcs_serializable[] = {
548 	ZEND_ABSTRACT_ME(serializable, serialize,   NULL)
549 	ZEND_FENTRY(unserialize, NULL, arginfo_serializable_serialize, ZEND_ACC_PUBLIC|ZEND_ACC_ABSTRACT|ZEND_ACC_CTOR)
550 	ZEND_FE_END
551 };
552 /* }}} */
553 
554 /* {{{ zend_register_interfaces */
zend_register_interfaces(void)555 ZEND_API void zend_register_interfaces(void)
556 {
557 	REGISTER_MAGIC_INTERFACE(traversable, Traversable);
558 
559 	REGISTER_MAGIC_INTERFACE(aggregate, IteratorAggregate);
560 	REGISTER_MAGIC_IMPLEMENT(aggregate, traversable);
561 
562 	REGISTER_MAGIC_INTERFACE(iterator, Iterator);
563 	REGISTER_MAGIC_IMPLEMENT(iterator, traversable);
564 
565 	REGISTER_MAGIC_INTERFACE(arrayaccess, ArrayAccess);
566 
567 	REGISTER_MAGIC_INTERFACE(serializable, Serializable);
568 }
569 /* }}} */
570 
571 /*
572  * Local variables:
573  * tab-width: 4
574  * c-basic-offset: 4
575  * indent-tabs-mode: t
576  * End:
577  */
578