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/**
* IteratorImpl.cpp
*
* Implementation file of the IteratorImpl class
*
* @author Emiel Bruijntjes <emiel.bruijntjes@copernica.com>
* @copyright 2014 Copernica BV
*/
#include "includes.h"
/**
* Set up namespace
*/
namespace Php {
/**
* Iterator destructor method
* @param iter
* @param tsrm_ls
*/
void Iterator::destructor(zend_object_iterator *iter TSRMLS_DC)
{
// get the actual iterator
Iterator *iterator = (Iterator *)iter->data;
// delete the iterator
delete iterator;
// free memory for the meta object
efree(iter);
}
/**
* Iterator valid function
* Returns FAILURE or SUCCESS
* @param iter
* @param tsrm_ls
* @return int
*/
int Iterator::valid(zend_object_iterator *iter TSRMLS_DC)
{
// get the actual iterator
Iterator *iterator = (Iterator *)iter->data;
// check if valid
return iterator->valid() ? SUCCESS : FAILURE;
}
/**
* Fetch the current item
* @param iter
* @param data
* @param tsrm_ls
*/
void Iterator::current(zend_object_iterator *iter, zval ***data TSRMLS_DC)
{
// get the actual iterator
Iterator *iterator = (Iterator *)iter->data;
// retrieve the value (and store it in a member so that it is not
// destructed when the function returns)
iterator->_current = iterator->current();
// copy the value
*data = &iterator->_current._val;
}
/**
* Fetch the key for the current element (optional, may be NULL). The key
* should be written into the provided zval* using the ZVAL_* macros. If
* this handler is not provided auto-incrementing integer keys will be
* used.
* @param iter
* @param key
* @param tsrm_ls
*/
void Iterator::key(zend_object_iterator *iter, zval *key TSRMLS_DC)
{
// get the actual iterator
Iterator *iterator = (Iterator *)iter->data;
// retrieve the key
Value retval(iterator->key());
// detach the underlying zval
zval *val = retval.detach();
// copy it to the key
ZVAL_ZVAL(key, val, 1, 1);
}
/**
* Function to retrieve the current key, php 5.3 style
* @param iter
* @param str_key
* @param str_key_len
* @param int_key
* @param tsrm_ls
* @return HASH_KEY_IS_STRING or HASH_KEY_IS_LONG
*/
int Iterator::key(zend_object_iterator *iter, char **str_key, uint *str_key_len, ulong *int_key TSRMLS_DC)
{
// get the actual iterator
Iterator *iterator = (Iterator *)iter->data;
// retrieve the key
Value retval(iterator->key());
// is this a numeric string?
if (retval.isString())
{
// copy the key and the from the value
*str_key = estrndup(retval.rawValue(), retval.size());
*str_key_len = retval.size() + 1;
// done
return HASH_KEY_IS_STRING;
}
else
{
// convert to a numeric
*int_key = retval.numericValue();
// done
return HASH_KEY_IS_LONG;
}
}
/**
* Step forwards to the next element
* @param iter
* @param tsrm_ls
*/
void Iterator::next(zend_object_iterator *iter TSRMLS_DC)
{
// get the actual iterator
Iterator *iterator = (Iterator *)iter->data;
// call the next method
iterator->next();
}
/**
* Rewind the iterator back to the start
* @param iter
* @param tsrm_ls
*/
void Iterator::rewind(zend_object_iterator *iter TSRMLS_DC)
{
// get the actual iterator
Iterator *iterator = (Iterator *)iter->data;
// call the rewind method
iterator->rewind();
}
/**
* Get access to all iterator functions
* @return zend_object_iterator_funcs
*/
zend_object_iterator_funcs *Iterator::functions()
{
// static variable with all functions
static zend_object_iterator_funcs funcs;
// static variable that knows if the funcs are already initialized
static bool initialized = false;
// no need to set anything if already initialized
if (initialized) return &funcs;
// set the members
funcs.dtor = &Iterator::destructor;
funcs.valid = &Iterator::valid;
funcs.get_current_data = &Iterator::current;
funcs.get_current_key = &Iterator::key;
funcs.move_forward = &Iterator::next;
funcs.rewind = &Iterator::rewind;
// invalidate is not yet supported
funcs.invalidate_current = nullptr;
// remember that functions are initialized
initialized = true;
// done
return &funcs;
}
/**
* Internal method that returns the implementation object
* @return zend_object_iterator
*/
struct _zend_object_iterator *Iterator::implementation()
{
// create an iterator
zend_object_iterator *iterator = (zend_object_iterator *)emalloc(sizeof(zend_object_iterator));
// initialize all properties
iterator->data = this;
iterator->index = 0;
iterator->funcs = functions();
// done
return iterator;
}
/**
* End namespace
*/
}
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