Ferran Recio
89 lines
1.9 KiB
PHP
89 lines
1.9 KiB
PHP
<?php
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/*
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* Copyright 2017 MongoDB, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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namespace MongoDB\Model;
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use Closure;
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use Iterator;
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use IteratorIterator;
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use Traversable;
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/**
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* Iterator to apply a callback before returning an element
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*
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* @internal
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*/
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class CallbackIterator implements Iterator
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{
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/** @var Closure */
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private $callback;
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/** @var IteratorIterator */
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private $iterator;
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public function __construct(Traversable $traversable, Closure $callback)
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{
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$this->iterator = new IteratorIterator($traversable);
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$this->callback = $callback;
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}
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/**
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* @see http://php.net/iterator.current
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* @return mixed
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*/
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public function current()
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{
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return ($this->callback)($this->iterator->current());
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}
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/**
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* @see http://php.net/iterator.key
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* @return mixed
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*/
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public function key()
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{
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return $this->iterator->key();
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}
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/**
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* @see http://php.net/iterator.next
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* @return void
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*/
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public function next()
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{
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$this->iterator->next();
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}
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/**
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* @see http://php.net/iterator.rewind
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* @return void
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*/
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public function rewind()
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{
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$this->iterator->rewind();
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}
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/**
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* @see http://php.net/iterator.valid
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* @return boolean
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*/
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public function valid()
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{
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return $this->iterator->valid();
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}
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}
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