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spl_iterators.c
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/*
+----------------------------------------------------------------------+
| PHP Version 7 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2017 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP 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.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Marcus Boerger <[email protected]> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "php.h"
#include "php_ini.h"
#include "ext/standard/info.h"
#include "zend_exceptions.h"
#include "zend_interfaces.h"
#include "php_spl.h"
#include "spl_functions.h"
#include "spl_engine.h"
#include "spl_iterators.h"
#include "spl_directory.h"
#include "spl_array.h"
#include "spl_exceptions.h"
#include "zend_smart_str.h"
#ifdef accept
#undef accept
#endif
PHPAPI zend_class_entry *spl_ce_RecursiveIterator;
PHPAPI zend_class_entry *spl_ce_RecursiveIteratorIterator;
PHPAPI zend_class_entry *spl_ce_FilterIterator;
PHPAPI zend_class_entry *spl_ce_CallbackFilterIterator;
PHPAPI zend_class_entry *spl_ce_RecursiveFilterIterator;
PHPAPI zend_class_entry *spl_ce_RecursiveCallbackFilterIterator;
PHPAPI zend_class_entry *spl_ce_ParentIterator;
PHPAPI zend_class_entry *spl_ce_SeekableIterator;
PHPAPI zend_class_entry *spl_ce_LimitIterator;
PHPAPI zend_class_entry *spl_ce_CachingIterator;
PHPAPI zend_class_entry *spl_ce_RecursiveCachingIterator;
PHPAPI zend_class_entry *spl_ce_OuterIterator;
PHPAPI zend_class_entry *spl_ce_IteratorIterator;
PHPAPI zend_class_entry *spl_ce_NoRewindIterator;
PHPAPI zend_class_entry *spl_ce_InfiniteIterator;
PHPAPI zend_class_entry *spl_ce_EmptyIterator;
PHPAPI zend_class_entry *spl_ce_AppendIterator;
PHPAPI zend_class_entry *spl_ce_RegexIterator;
PHPAPI zend_class_entry *spl_ce_RecursiveRegexIterator;
PHPAPI zend_class_entry *spl_ce_RecursiveTreeIterator;
ZEND_BEGIN_ARG_INFO(arginfo_recursive_it_void, 0)
ZEND_END_ARG_INFO()
const zend_function_entry spl_funcs_RecursiveIterator[] = {
SPL_ABSTRACT_ME(RecursiveIterator, hasChildren, arginfo_recursive_it_void)
SPL_ABSTRACT_ME(RecursiveIterator, getChildren, arginfo_recursive_it_void)
PHP_FE_END
};
typedef enum {
RIT_LEAVES_ONLY = 0,
RIT_SELF_FIRST = 1,
RIT_CHILD_FIRST = 2
} RecursiveIteratorMode;
#define RIT_CATCH_GET_CHILD CIT_CATCH_GET_CHILD
typedef enum {
RTIT_BYPASS_CURRENT = 4,
RTIT_BYPASS_KEY = 8
} RecursiveTreeIteratorFlags;
typedef enum {
RS_NEXT = 0,
RS_TEST = 1,
RS_SELF = 2,
RS_CHILD = 3,
RS_START = 4
} RecursiveIteratorState;
typedef struct _spl_sub_iterator {
zend_object_iterator *iterator;
zval zobject;
zend_class_entry *ce;
RecursiveIteratorState state;
} spl_sub_iterator;
typedef struct _spl_recursive_it_object {
spl_sub_iterator *iterators;
int level;
RecursiveIteratorMode mode;
int flags;
int max_depth;
zend_bool in_iteration;
zend_function *beginIteration;
zend_function *endIteration;
zend_function *callHasChildren;
zend_function *callGetChildren;
zend_function *beginChildren;
zend_function *endChildren;
zend_function *nextElement;
zend_class_entry *ce;
smart_str prefix[6];
smart_str postfix[1];
zend_object std;
} spl_recursive_it_object;
typedef struct _spl_recursive_it_iterator {
zend_object_iterator intern;
} spl_recursive_it_iterator;
static zend_object_handlers spl_handlers_rec_it_it;
static zend_object_handlers spl_handlers_dual_it;
static inline spl_recursive_it_object *spl_recursive_it_from_obj(zend_object *obj) /* {{{ */ {
return (spl_recursive_it_object*)((char*)(obj) - XtOffsetOf(spl_recursive_it_object, std));
}
/* }}} */
#define Z_SPLRECURSIVE_IT_P(zv) spl_recursive_it_from_obj(Z_OBJ_P((zv)))
#define SPL_FETCH_AND_CHECK_DUAL_IT(var, objzval) \
do { \
spl_dual_it_object *it = Z_SPLDUAL_IT_P(objzval); \
if (it->dit_type == DIT_Unknown) { \
zend_throw_exception_ex(spl_ce_LogicException, 0, \
"The object is in an invalid state as the parent constructor was not called"); \
return; \
} \
(var) = it; \
} while (0)
#define SPL_FETCH_SUB_ELEMENT(var, object, element) \
do { \
if(!(object)->iterators) { \
zend_throw_exception_ex(spl_ce_LogicException, 0, \
"The object is in an invalid state as the parent constructor was not called"); \
return; \
} \
(var) = (object)->iterators[(object)->level].element; \
} while (0)
#define SPL_FETCH_SUB_ELEMENT_ADDR(var, object, element) \
do { \
if(!(object)->iterators) { \
zend_throw_exception_ex(spl_ce_LogicException, 0, \
"The object is in an invalid state as the parent constructor was not called"); \
return; \
} \
(var) = &(object)->iterators[(object)->level].element; \
} while (0)
#define SPL_FETCH_SUB_ITERATOR(var, object) SPL_FETCH_SUB_ELEMENT(var, object, iterator)
static void spl_recursive_it_dtor(zend_object_iterator *_iter)
{
spl_recursive_it_iterator *iter = (spl_recursive_it_iterator*)_iter;
spl_recursive_it_object *object = Z_SPLRECURSIVE_IT_P(&iter->intern.data);
zend_object_iterator *sub_iter;
while (object->level > 0) {
if (!Z_ISUNDEF(object->iterators[object->level].zobject)) {
sub_iter = object->iterators[object->level].iterator;
zend_iterator_dtor(sub_iter);
zval_ptr_dtor(&object->iterators[object->level].zobject);
}
object->level--;
}
object->iterators = erealloc(object->iterators, sizeof(spl_sub_iterator));
object->level = 0;
zval_ptr_dtor(&iter->intern.data);
}
static int spl_recursive_it_valid_ex(spl_recursive_it_object *object, zval *zthis)
{
zend_object_iterator *sub_iter;
int level = object->level;
if(!object->iterators) {
return FAILURE;
}
while (level >=0) {
sub_iter = object->iterators[level].iterator;
if (sub_iter->funcs->valid(sub_iter) == SUCCESS) {
return SUCCESS;
}
level--;
}
if (object->endIteration && object->in_iteration) {
zend_call_method_with_0_params(zthis, object->ce, &object->endIteration, "endIteration", NULL);
}
object->in_iteration = 0;
return FAILURE;
}
static int spl_recursive_it_valid(zend_object_iterator *iter)
{
return spl_recursive_it_valid_ex(Z_SPLRECURSIVE_IT_P(&iter->data), &iter->data);
}
static zval *spl_recursive_it_get_current_data(zend_object_iterator *iter)
{
spl_recursive_it_object *object = Z_SPLRECURSIVE_IT_P(&iter->data);
zend_object_iterator *sub_iter = object->iterators[object->level].iterator;
return sub_iter->funcs->get_current_data(sub_iter);
}
static void spl_recursive_it_get_current_key(zend_object_iterator *iter, zval *key)
{
spl_recursive_it_object *object = Z_SPLRECURSIVE_IT_P(&iter->data);
zend_object_iterator *sub_iter = object->iterators[object->level].iterator;
if (sub_iter->funcs->get_current_key) {
sub_iter->funcs->get_current_key(sub_iter, key);
} else {
ZVAL_LONG(key, iter->index);
}
}
static void spl_recursive_it_move_forward_ex(spl_recursive_it_object *object, zval *zthis)
{
zend_object_iterator *iterator;
zval *zobject;
zend_class_entry *ce;
zval retval, child;
zend_object_iterator *sub_iter;
int has_children;
SPL_FETCH_SUB_ITERATOR(iterator, object);
while (!EG(exception)) {
next_step:
iterator = object->iterators[object->level].iterator;
switch (object->iterators[object->level].state) {
case RS_NEXT:
iterator->funcs->move_forward(iterator);
if (EG(exception)) {
if (!(object->flags & RIT_CATCH_GET_CHILD)) {
return;
} else {
zend_clear_exception();
}
}
/* fall through */
case RS_START:
if (iterator->funcs->valid(iterator) == FAILURE) {
break;
}
object->iterators[object->level].state = RS_TEST;
/* break; */
case RS_TEST:
ce = object->iterators[object->level].ce;
zobject = &object->iterators[object->level].zobject;
if (object->callHasChildren) {
zend_call_method_with_0_params(zthis, object->ce, &object->callHasChildren, "callHasChildren", &retval);
} else {
zend_call_method_with_0_params(zobject, ce, NULL, "haschildren", &retval);
}
if (EG(exception)) {
if (!(object->flags & RIT_CATCH_GET_CHILD)) {
object->iterators[object->level].state = RS_NEXT;
return;
} else {
zend_clear_exception();
}
}
if (Z_TYPE(retval) != IS_UNDEF) {
has_children = zend_is_true(&retval);
zval_ptr_dtor(&retval);
if (has_children) {
if (object->max_depth == -1 || object->max_depth > object->level) {
switch (object->mode) {
case RIT_LEAVES_ONLY:
case RIT_CHILD_FIRST:
object->iterators[object->level].state = RS_CHILD;
goto next_step;
case RIT_SELF_FIRST:
object->iterators[object->level].state = RS_SELF;
goto next_step;
}
} else {
/* do not recurse into */
if (object->mode == RIT_LEAVES_ONLY) {
/* this is not a leave, so skip it */
object->iterators[object->level].state = RS_NEXT;
goto next_step;
}
}
}
}
if (object->nextElement) {
zend_call_method_with_0_params(zthis, object->ce, &object->nextElement, "nextelement", NULL);
}
object->iterators[object->level].state = RS_NEXT;
if (EG(exception)) {
if (!(object->flags & RIT_CATCH_GET_CHILD)) {
return;
} else {
zend_clear_exception();
}
}
return /* self */;
case RS_SELF:
if (object->nextElement && (object->mode == RIT_SELF_FIRST || object->mode == RIT_CHILD_FIRST)) {
zend_call_method_with_0_params(zthis, object->ce, &object->nextElement, "nextelement", NULL);
}
if (object->mode == RIT_SELF_FIRST) {
object->iterators[object->level].state = RS_CHILD;
} else {
object->iterators[object->level].state = RS_NEXT;
}
return /* self */;
case RS_CHILD:
ce = object->iterators[object->level].ce;
zobject = &object->iterators[object->level].zobject;
if (object->callGetChildren) {
zend_call_method_with_0_params(zthis, object->ce, &object->callGetChildren, "callGetChildren", &child);
} else {
zend_call_method_with_0_params(zobject, ce, NULL, "getchildren", &child);
}
if (EG(exception)) {
if (!(object->flags & RIT_CATCH_GET_CHILD)) {
return;
} else {
zend_clear_exception();
zval_ptr_dtor(&child);
object->iterators[object->level].state = RS_NEXT;
goto next_step;
}
}
if (Z_TYPE(child) == IS_UNDEF || Z_TYPE(child) != IS_OBJECT ||
!((ce = Z_OBJCE(child)) && instanceof_function(ce, spl_ce_RecursiveIterator))) {
zval_ptr_dtor(&child);
zend_throw_exception(spl_ce_UnexpectedValueException, "Objects returned by RecursiveIterator::getChildren() must implement RecursiveIterator", 0);
return;
}
if (object->mode == RIT_CHILD_FIRST) {
object->iterators[object->level].state = RS_SELF;
} else {
object->iterators[object->level].state = RS_NEXT;
}
object->iterators = erealloc(object->iterators, sizeof(spl_sub_iterator) * (++object->level+1));
sub_iter = ce->get_iterator(ce, &child, 0);
ZVAL_COPY_VALUE(&object->iterators[object->level].zobject, &child);
object->iterators[object->level].iterator = sub_iter;
object->iterators[object->level].ce = ce;
object->iterators[object->level].state = RS_START;
if (sub_iter->funcs->rewind) {
sub_iter->funcs->rewind(sub_iter);
}
if (object->beginChildren) {
zend_call_method_with_0_params(zthis, object->ce, &object->beginChildren, "beginchildren", NULL);
if (EG(exception)) {
if (!(object->flags & RIT_CATCH_GET_CHILD)) {
return;
} else {
zend_clear_exception();
}
}
}
goto next_step;
}
/* no more elements */
if (object->level > 0) {
if (object->endChildren) {
zend_call_method_with_0_params(zthis, object->ce, &object->endChildren, "endchildren", NULL);
if (EG(exception)) {
if (!(object->flags & RIT_CATCH_GET_CHILD)) {
return;
} else {
zend_clear_exception();
}
}
}
if (object->level > 0) {
zval garbage;
ZVAL_COPY_VALUE(&garbage, &object->iterators[object->level].zobject);
ZVAL_UNDEF(&object->iterators[object->level].zobject);
zval_ptr_dtor(&garbage);
zend_iterator_dtor(iterator);
object->level--;
}
} else {
return; /* done completeley */
}
}
}
static void spl_recursive_it_rewind_ex(spl_recursive_it_object *object, zval *zthis)
{
zend_object_iterator *sub_iter;
SPL_FETCH_SUB_ITERATOR(sub_iter, object);
while (object->level) {
sub_iter = object->iterators[object->level].iterator;
zend_iterator_dtor(sub_iter);
zval_ptr_dtor(&object->iterators[object->level--].zobject);
if (!EG(exception) && (!object->endChildren || object->endChildren->common.scope != spl_ce_RecursiveIteratorIterator)) {
zend_call_method_with_0_params(zthis, object->ce, &object->endChildren, "endchildren", NULL);
}
}
object->iterators = erealloc(object->iterators, sizeof(spl_sub_iterator));
object->iterators[0].state = RS_START;
sub_iter = object->iterators[0].iterator;
if (sub_iter->funcs->rewind) {
sub_iter->funcs->rewind(sub_iter);
}
if (!EG(exception) && object->beginIteration && !object->in_iteration) {
zend_call_method_with_0_params(zthis, object->ce, &object->beginIteration, "beginIteration", NULL);
}
object->in_iteration = 1;
spl_recursive_it_move_forward_ex(object, zthis);
}
static void spl_recursive_it_move_forward(zend_object_iterator *iter)
{
spl_recursive_it_move_forward_ex(Z_SPLRECURSIVE_IT_P(&iter->data), &iter->data);
}
static void spl_recursive_it_rewind(zend_object_iterator *iter)
{
spl_recursive_it_rewind_ex(Z_SPLRECURSIVE_IT_P(&iter->data), &iter->data);
}
static zend_object_iterator *spl_recursive_it_get_iterator(zend_class_entry *ce, zval *zobject, int by_ref)
{
spl_recursive_it_iterator *iterator;
spl_recursive_it_object *object;
if (by_ref) {
zend_error(E_ERROR, "An iterator cannot be used with foreach by reference");
}
iterator = emalloc(sizeof(spl_recursive_it_iterator));
object = Z_SPLRECURSIVE_IT_P(zobject);
if (object->iterators == NULL) {
zend_error(E_ERROR, "The object to be iterated is in an invalid state: "
"the parent constructor has not been called");
}
zend_iterator_init((zend_object_iterator*)iterator);
ZVAL_COPY(&iterator->intern.data, zobject);
iterator->intern.funcs = ce->iterator_funcs.funcs;
return (zend_object_iterator*)iterator;
}
zend_object_iterator_funcs spl_recursive_it_iterator_funcs = {
spl_recursive_it_dtor,
spl_recursive_it_valid,
spl_recursive_it_get_current_data,
spl_recursive_it_get_current_key,
spl_recursive_it_move_forward,
spl_recursive_it_rewind,
NULL
};
static void spl_recursive_it_it_construct(INTERNAL_FUNCTION_PARAMETERS, zend_class_entry *ce_base, zend_class_entry *ce_inner, recursive_it_it_type rit_type)
{
zval *object = getThis();
spl_recursive_it_object *intern;
zval *iterator;
zend_class_entry *ce_iterator;
zend_long mode, flags;
zend_error_handling error_handling;
zval caching_it, aggregate_retval;
zend_replace_error_handling(EH_THROW, spl_ce_InvalidArgumentException, &error_handling);
switch (rit_type) {
case RIT_RecursiveTreeIterator: {
zval caching_it_flags, *user_caching_it_flags = NULL;
mode = RIT_SELF_FIRST;
flags = RTIT_BYPASS_KEY;
if (zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, ZEND_NUM_ARGS(), "o|lzl", &iterator, &flags, &user_caching_it_flags, &mode) == SUCCESS) {
if (instanceof_function(Z_OBJCE_P(iterator), zend_ce_aggregate)) {
zend_call_method_with_0_params(iterator, Z_OBJCE_P(iterator), &Z_OBJCE_P(iterator)->iterator_funcs.zf_new_iterator, "getiterator", &aggregate_retval);
iterator = &aggregate_retval;
} else {
Z_ADDREF_P(iterator);
}
if (user_caching_it_flags) {
ZVAL_COPY(&caching_it_flags, user_caching_it_flags);
} else {
ZVAL_LONG(&caching_it_flags, CIT_CATCH_GET_CHILD);
}
spl_instantiate_arg_ex2(spl_ce_RecursiveCachingIterator, &caching_it, iterator, &caching_it_flags);
zval_ptr_dtor(&caching_it_flags);
zval_ptr_dtor(iterator);
iterator = &caching_it;
} else {
iterator = NULL;
}
break;
}
case RIT_RecursiveIteratorIterator:
default: {
mode = RIT_LEAVES_ONLY;
flags = 0;
if (zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, ZEND_NUM_ARGS(), "o|ll", &iterator, &mode, &flags) == SUCCESS) {
if (instanceof_function(Z_OBJCE_P(iterator), zend_ce_aggregate)) {
zend_call_method_with_0_params(iterator, Z_OBJCE_P(iterator), &Z_OBJCE_P(iterator)->iterator_funcs.zf_new_iterator, "getiterator", &aggregate_retval);
iterator = &aggregate_retval;
} else {
Z_ADDREF_P(iterator);
}
} else {
iterator = NULL;
}
break;
}
}
if (!iterator || !instanceof_function(Z_OBJCE_P(iterator), spl_ce_RecursiveIterator)) {
if (iterator) {
zval_ptr_dtor(iterator);
}
zend_throw_exception(spl_ce_InvalidArgumentException, "An instance of RecursiveIterator or IteratorAggregate creating it is required", 0);
zend_restore_error_handling(&error_handling);
return;
}
intern = Z_SPLRECURSIVE_IT_P(object);
intern->iterators = emalloc(sizeof(spl_sub_iterator));
intern->level = 0;
intern->mode = mode;
intern->flags = (int)flags;
intern->max_depth = -1;
intern->in_iteration = 0;
intern->ce = Z_OBJCE_P(object);
intern->beginIteration = zend_hash_str_find_ptr(&intern->ce->function_table, "beginiteration", sizeof("beginiteration") - 1);
if (intern->beginIteration->common.scope == ce_base) {
intern->beginIteration = NULL;
}
intern->endIteration = zend_hash_str_find_ptr(&intern->ce->function_table, "enditeration", sizeof("enditeration") - 1);
if (intern->endIteration->common.scope == ce_base) {
intern->endIteration = NULL;
}
intern->callHasChildren = zend_hash_str_find_ptr(&intern->ce->function_table, "callhaschildren", sizeof("callHasChildren") - 1);
if (intern->callHasChildren->common.scope == ce_base) {
intern->callHasChildren = NULL;
}
intern->callGetChildren = zend_hash_str_find_ptr(&intern->ce->function_table, "callgetchildren", sizeof("callGetChildren") - 1);
if (intern->callGetChildren->common.scope == ce_base) {
intern->callGetChildren = NULL;
}
intern->beginChildren = zend_hash_str_find_ptr(&intern->ce->function_table, "beginchildren", sizeof("beginchildren") - 1);
if (intern->beginChildren->common.scope == ce_base) {
intern->beginChildren = NULL;
}
intern->endChildren = zend_hash_str_find_ptr(&intern->ce->function_table, "endchildren", sizeof("endchildren") - 1);
if (intern->endChildren->common.scope == ce_base) {
intern->endChildren = NULL;
}
intern->nextElement = zend_hash_str_find_ptr(&intern->ce->function_table, "nextelement", sizeof("nextElement") - 1);
if (intern->nextElement->common.scope == ce_base) {
intern->nextElement = NULL;
}
ce_iterator = Z_OBJCE_P(iterator); /* respect inheritance, don't use spl_ce_RecursiveIterator */
intern->iterators[0].iterator = ce_iterator->get_iterator(ce_iterator, iterator, 0);
ZVAL_COPY_VALUE(&intern->iterators[0].zobject, iterator);
intern->iterators[0].ce = ce_iterator;
intern->iterators[0].state = RS_START;
zend_restore_error_handling(&error_handling);
if (EG(exception)) {
zend_object_iterator *sub_iter;
while (intern->level >= 0) {
sub_iter = intern->iterators[intern->level].iterator;
zend_iterator_dtor(sub_iter);
zval_ptr_dtor(&intern->iterators[intern->level--].zobject);
}
efree(intern->iterators);
intern->iterators = NULL;
}
}
/* {{{ proto void RecursiveIteratorIterator::__construct(RecursiveIterator|IteratorAggregate it [, int mode = RIT_LEAVES_ONLY [, int flags = 0]]) throws InvalidArgumentException
Creates a RecursiveIteratorIterator from a RecursiveIterator. */
SPL_METHOD(RecursiveIteratorIterator, __construct)
{
spl_recursive_it_it_construct(INTERNAL_FUNCTION_PARAM_PASSTHRU, spl_ce_RecursiveIteratorIterator, zend_ce_iterator, RIT_RecursiveIteratorIterator);
} /* }}} */
/* {{{ proto void RecursiveIteratorIterator::rewind()
Rewind the iterator to the first element of the top level inner iterator. */
SPL_METHOD(RecursiveIteratorIterator, rewind)
{
spl_recursive_it_object *object = Z_SPLRECURSIVE_IT_P(getThis());
if (zend_parse_parameters_none() == FAILURE) {
return;
}
spl_recursive_it_rewind_ex(object, getThis());
} /* }}} */
/* {{{ proto bool RecursiveIteratorIterator::valid()
Check whether the current position is valid */
SPL_METHOD(RecursiveIteratorIterator, valid)
{
spl_recursive_it_object *object = Z_SPLRECURSIVE_IT_P(getThis());
if (zend_parse_parameters_none() == FAILURE) {
return;
}
RETURN_BOOL(spl_recursive_it_valid_ex(object, getThis()) == SUCCESS);
} /* }}} */
/* {{{ proto mixed RecursiveIteratorIterator::key()
Access the current key */
SPL_METHOD(RecursiveIteratorIterator, key)
{
spl_recursive_it_object *object = Z_SPLRECURSIVE_IT_P(getThis());
zend_object_iterator *iterator;
if (zend_parse_parameters_none() == FAILURE) {
return;
}
SPL_FETCH_SUB_ITERATOR(iterator, object);
if (iterator->funcs->get_current_key) {
iterator->funcs->get_current_key(iterator, return_value);
} else {
RETURN_NULL();
}
} /* }}} */
/* {{{ proto mixed RecursiveIteratorIterator::current()
Access the current element value */
SPL_METHOD(RecursiveIteratorIterator, current)
{
spl_recursive_it_object *object = Z_SPLRECURSIVE_IT_P(getThis());
zend_object_iterator *iterator;
zval *data;
if (zend_parse_parameters_none() == FAILURE) {
return;
}
SPL_FETCH_SUB_ITERATOR(iterator, object);
data = iterator->funcs->get_current_data(iterator);
if (data) {
ZVAL_DEREF(data);
ZVAL_COPY(return_value, data);
}
} /* }}} */
/* {{{ proto void RecursiveIteratorIterator::next()
Move forward to the next element */
SPL_METHOD(RecursiveIteratorIterator, next)
{
spl_recursive_it_object *object = Z_SPLRECURSIVE_IT_P(getThis());
if (zend_parse_parameters_none() == FAILURE) {
return;
}
spl_recursive_it_move_forward_ex(object, getThis());
} /* }}} */
/* {{{ proto int RecursiveIteratorIterator::getDepth()
Get the current depth of the recursive iteration */
SPL_METHOD(RecursiveIteratorIterator, getDepth)
{
spl_recursive_it_object *object = Z_SPLRECURSIVE_IT_P(getThis());
if (zend_parse_parameters_none() == FAILURE) {
return;
}
RETURN_LONG(object->level);
} /* }}} */
/* {{{ proto RecursiveIterator RecursiveIteratorIterator::getSubIterator([int level])
The current active sub iterator or the iterator at specified level */
SPL_METHOD(RecursiveIteratorIterator, getSubIterator)
{
spl_recursive_it_object *object = Z_SPLRECURSIVE_IT_P(getThis());
zend_long level = object->level;
zval *value;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "|l", &level) == FAILURE) {
return;
}
if (level < 0 || level > object->level) {
RETURN_NULL();
}
if(!object->iterators) {
zend_throw_exception_ex(spl_ce_LogicException, 0,
"The object is in an invalid state as the parent constructor was not called");
return;
}
value = &object->iterators[level].zobject;
ZVAL_DEREF(value);
ZVAL_COPY(return_value, value);
} /* }}} */
/* {{{ proto RecursiveIterator RecursiveIteratorIterator::getInnerIterator()
The current active sub iterator */
SPL_METHOD(RecursiveIteratorIterator, getInnerIterator)
{
spl_recursive_it_object *object = Z_SPLRECURSIVE_IT_P(getThis());
zval *zobject;
if (zend_parse_parameters_none() == FAILURE) {
return;
}
SPL_FETCH_SUB_ELEMENT_ADDR(zobject, object, zobject);
ZVAL_DEREF(zobject);
ZVAL_COPY(return_value, zobject);
} /* }}} */
/* {{{ proto RecursiveIterator RecursiveIteratorIterator::beginIteration()
Called when iteration begins (after first rewind() call) */
SPL_METHOD(RecursiveIteratorIterator, beginIteration)
{
if (zend_parse_parameters_none() == FAILURE) {
return;
}
/* nothing to do */
} /* }}} */
/* {{{ proto RecursiveIterator RecursiveIteratorIterator::endIteration()
Called when iteration ends (when valid() first returns false */
SPL_METHOD(RecursiveIteratorIterator, endIteration)
{
if (zend_parse_parameters_none() == FAILURE) {
return;
}
/* nothing to do */
} /* }}} */
/* {{{ proto bool RecursiveIteratorIterator::callHasChildren()
Called for each element to test whether it has children */
SPL_METHOD(RecursiveIteratorIterator, callHasChildren)
{
spl_recursive_it_object *object = Z_SPLRECURSIVE_IT_P(getThis());
zend_class_entry *ce;
zval *zobject;
if (zend_parse_parameters_none() == FAILURE) {
return;
}
if (!object->iterators) {
RETURN_NULL();
}
SPL_FETCH_SUB_ELEMENT(ce, object, ce);
zobject = &object->iterators[object->level].zobject;
if (Z_TYPE_P(zobject) == IS_UNDEF) {
RETURN_FALSE;
} else {
zend_call_method_with_0_params(zobject, ce, NULL, "haschildren", return_value);
if (Z_TYPE_P(return_value) == IS_UNDEF) {
RETURN_FALSE;
}
}
} /* }}} */
/* {{{ proto RecursiveIterator RecursiveIteratorIterator::callGetChildren()
Return children of current element */
SPL_METHOD(RecursiveIteratorIterator, callGetChildren)
{
spl_recursive_it_object *object = Z_SPLRECURSIVE_IT_P(getThis());
zend_class_entry *ce;
zval *zobject;
if (zend_parse_parameters_none() == FAILURE) {
return;
}
SPL_FETCH_SUB_ELEMENT(ce, object, ce);
zobject = &object->iterators[object->level].zobject;
if (Z_TYPE_P(zobject) == IS_UNDEF) {
return;
} else {
zend_call_method_with_0_params(zobject, ce, NULL, "getchildren", return_value);
if (Z_TYPE_P(return_value) == IS_UNDEF) {
RETURN_NULL();
}
}
} /* }}} */
/* {{{ proto void RecursiveIteratorIterator::beginChildren()
Called when recursing one level down */
SPL_METHOD(RecursiveIteratorIterator, beginChildren)
{
if (zend_parse_parameters_none() == FAILURE) {
return;
}
/* nothing to do */
} /* }}} */
/* {{{ proto void RecursiveIteratorIterator::endChildren()
Called when end recursing one level */
SPL_METHOD(RecursiveIteratorIterator, endChildren)
{
if (zend_parse_parameters_none() == FAILURE) {
return;
}
/* nothing to do */
} /* }}} */
/* {{{ proto void RecursiveIteratorIterator::nextElement()
Called when the next element is available */
SPL_METHOD(RecursiveIteratorIterator, nextElement)
{
if (zend_parse_parameters_none() == FAILURE) {
return;
}
/* nothing to do */
} /* }}} */
/* {{{ proto void RecursiveIteratorIterator::setMaxDepth([$max_depth = -1])
Set the maximum allowed depth (or any depth if pmax_depth = -1] */
SPL_METHOD(RecursiveIteratorIterator, setMaxDepth)
{
spl_recursive_it_object *object = Z_SPLRECURSIVE_IT_P(getThis());
zend_long max_depth = -1;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "|l", &max_depth) == FAILURE) {
return;
}
if (max_depth < -1) {
zend_throw_exception(spl_ce_OutOfRangeException, "Parameter max_depth must be >= -1", 0);
return;
} else if (max_depth > INT_MAX) {
max_depth = INT_MAX;
}
object->max_depth = (int)max_depth;
} /* }}} */
/* {{{ proto int|false RecursiveIteratorIterator::getMaxDepth()
Return the maximum accepted depth or false if any depth is allowed */
SPL_METHOD(RecursiveIteratorIterator, getMaxDepth)
{
spl_recursive_it_object *object = Z_SPLRECURSIVE_IT_P(getThis());
if (zend_parse_parameters_none() == FAILURE) {
return;
}
if (object->max_depth == -1) {
RETURN_FALSE;
} else {
RETURN_LONG(object->max_depth);
}
} /* }}} */
static union _zend_function *spl_recursive_it_get_method(zend_object **zobject, zend_string *method, const zval *key)
{
union _zend_function *function_handler;
spl_recursive_it_object *object = spl_recursive_it_from_obj(*zobject);
zend_long level = object->level;
zval *zobj;
if (!object->iterators) {
php_error_docref(NULL, E_ERROR, "The %s instance wasn't initialized properly", ZSTR_VAL((*zobject)->ce->name));
}
zobj = &object->iterators[level].zobject;
function_handler = std_object_handlers.get_method(zobject, method, key);
if (!function_handler) {
if ((function_handler = zend_hash_find_ptr(&Z_OBJCE_P(zobj)->function_table, method)) == NULL) {
if (Z_OBJ_HT_P(zobj)->get_method) {
*zobject = Z_OBJ_P(zobj);
function_handler = (*zobject)->handlers->get_method(zobject, method, key);
}
} else {
*zobject = Z_OBJ_P(zobj);
}
}
return function_handler;
}
/* {{{ spl_RecursiveIteratorIterator_dtor */
static void spl_RecursiveIteratorIterator_dtor(zend_object *_object)
{
spl_recursive_it_object *object = spl_recursive_it_from_obj(_object);
zend_object_iterator *sub_iter;
/* call standard dtor */
zend_objects_destroy_object(_object);
if (object->iterators) {
while (object->level >= 0) {
sub_iter = object->iterators[object->level].iterator;
zend_iterator_dtor(sub_iter);
zval_ptr_dtor(&object->iterators[object->level--].zobject);
}
efree(object->iterators);
object->iterators = NULL;
}
}
/* }}} */
/* {{{ spl_RecursiveIteratorIterator_free_storage */
static void spl_RecursiveIteratorIterator_free_storage(zend_object *_object)
{
spl_recursive_it_object *object = spl_recursive_it_from_obj(_object);
if (object->iterators) {
efree(object->iterators);
object->iterators = NULL;
object->level = 0;
}
zend_object_std_dtor(&object->std);
smart_str_free(&object->prefix[0]);
smart_str_free(&object->prefix[1]);
smart_str_free(&object->prefix[2]);
smart_str_free(&object->prefix[3]);
smart_str_free(&object->prefix[4]);
smart_str_free(&object->prefix[5]);
smart_str_free(&object->postfix[0]);
}
/* }}} */
/* {{{ spl_RecursiveIteratorIterator_new_ex */
static zend_object *spl_RecursiveIteratorIterator_new_ex(zend_class_entry *class_type, int init_prefix)
{
spl_recursive_it_object *intern;
intern = ecalloc(1, sizeof(spl_recursive_it_object) + zend_object_properties_size(class_type));
if (init_prefix) {
smart_str_appendl(&intern->prefix[0], "", 0);
smart_str_appendl(&intern->prefix[1], "| ", 2);
smart_str_appendl(&intern->prefix[2], " ", 2);
smart_str_appendl(&intern->prefix[3], "|-", 2);
smart_str_appendl(&intern->prefix[4], "\\-", 2);
smart_str_appendl(&intern->prefix[5], "", 0);
smart_str_appendl(&intern->postfix[0], "", 0);
}
zend_object_std_init(&intern->std, class_type);
object_properties_init(&intern->std, class_type);
intern->std.handlers = &spl_handlers_rec_it_it;
return &intern->std;
}
/* }}} */
/* {{{ spl_RecursiveIteratorIterator_new */
static zend_object *spl_RecursiveIteratorIterator_new(zend_class_entry *class_type)
{
return spl_RecursiveIteratorIterator_new_ex(class_type, 0);
}
/* }}} */
/* {{{ spl_RecursiveTreeIterator_new */
static zend_object *spl_RecursiveTreeIterator_new(zend_class_entry *class_type)
{
return spl_RecursiveIteratorIterator_new_ex(class_type, 1);
}
/* }}} */
ZEND_BEGIN_ARG_INFO_EX(arginfo_recursive_it___construct, 0, 0, 1)
ZEND_ARG_OBJ_INFO(0, iterator, Traversable, 0)