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/* +----------------------------------------------------------------------+ | Zend Engine | +----------------------------------------------------------------------+ | Copyright (c) 1998-2006 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. | +----------------------------------------------------------------------+ | Author: Wez Furlong <wez@thebrainroom.com> | | Marcus Boerger <helly@php.net> | +----------------------------------------------------------------------+ */ /* $Id: zend_iterators.h,v 1.10.2.1 2006/01/04 23:53:04 andi Exp $ */ /* These iterators were designed to operate within the foreach() * structures provided by the engine, but could be extended for use * with other iterative engine opcodes. * These methods have similar semantics to the zend_hash API functions * with similar names. * */ typedef struct _zend_object_iterator zend_object_iterator; typedef struct _zend_object_iterator_funcs { /* release all resources associated with this iterator instance */ void (*dtor)(zend_object_iterator *iter TSRMLS_DC); /* check for end of iteration (FAILURE or SUCCESS if data is valid) */ int (*valid)(zend_object_iterator *iter TSRMLS_DC); /* fetch the item data for the current element */ void (*get_current_data)(zend_object_iterator *iter, zval ***data TSRMLS_DC); /* fetch the key for the current element (return HASH_KEY_IS_STRING or HASH_KEY_IS_LONG) (optional, may be NULL) */ int (*get_current_key)(zend_object_iterator *iter, char **str_key, uint *str_key_len, ulong *int_key TSRMLS_DC); /* step forwards to next element */ void (*move_forward)(zend_object_iterator *iter TSRMLS_DC); /* rewind to start of data (optional, may be NULL) */ void (*rewind)(zend_object_iterator *iter TSRMLS_DC); /* invalidate current value/key (optional, may be NULL) */ void (*invalidate_current)(zend_object_iterator *iter TSRMLS_DC); } zend_object_iterator_funcs; struct _zend_object_iterator { void *data; zend_object_iterator_funcs *funcs; ulong index; /* private to fe_reset/fe_fetch opcodes */ }; typedef zval *(*zend_object_new_iterator_t)(zend_class_entry *ce, zval *object TSRMLS_DC); typedef struct _zend_class_iterator_funcs { zend_object_iterator_funcs *funcs; zend_object_new_iterator_t new_iterator; union _zend_function *zf_new_iterator; union _zend_function *zf_valid; union _zend_function *zf_current; union _zend_function *zf_key; union _zend_function *zf_next; union _zend_function *zf_rewind; } zend_class_iterator_funcs; enum zend_object_iterator_kind { ZEND_ITER_INVALID, ZEND_ITER_PLAIN_ARRAY, ZEND_ITER_PLAIN_OBJECT, ZEND_ITER_OBJECT }; BEGIN_EXTERN_C() /* given a zval, returns stuff that can be used to iterate it. */ ZEND_API enum zend_object_iterator_kind zend_iterator_unwrap(zval *array_ptr, zend_object_iterator **iter TSRMLS_DC); /* given an iterator, wrap it up as a zval for use by the engine opcodes */ ZEND_API zval *zend_iterator_wrap(zend_object_iterator *iter TSRMLS_DC); ZEND_API void zend_register_iterator_wrapper(TSRMLS_D); END_EXTERN_C() /* * Local variables: * tab-width: 4 * c-basic-offset: 4 * indent-tabs-mode: t * End: */
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