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https://github.com/zoe-may/TDoG-Skin.git
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141 lines
3.2 KiB
PHP
Executable File
141 lines
3.2 KiB
PHP
Executable File
<?php
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/**
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* Hoa
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*
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*
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* @license
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*
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* New BSD License
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*
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* Copyright © 2007-2017, Hoa community. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the Hoa nor the names of its contributors may be
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* used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS AND CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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namespace Hoa\Iterator;
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/**
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* Class \Hoa\Iterator\CallbackGenerator.
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*
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* Yield a value based on a callback.
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*
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* @copyright Copyright © 2007-2017 Hoa community
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* @license New BSD License
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*/
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class CallbackGenerator implements Iterator
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{
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/**
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* Callback.
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*
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* @var callable
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*/
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protected $_callback = null;
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/**
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* Current key.
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*
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* @var mixed
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*/
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protected $_key = 0;
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/**
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* Current computed value.
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*
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* @var mixed
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*/
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protected $_current = null;
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/**
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* Constructor.
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*
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* @param callable $callback Callback.
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*/
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public function __construct(callable $callback)
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{
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$this->_callback = $callback;
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return;
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}
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/**
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* Return the current element.
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*
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* @return mixed
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*/
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public function current()
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{
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$handle = $this->_callback;
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return $this->_current = $handle($this->_key);
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}
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/**
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* Return the key of the current element.
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*
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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 $this->_key;
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}
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/**
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* Move forward to next element.
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*
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* @return void
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*/
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public function next()
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{
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++$this->_key;
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return;
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}
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/**
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* Rewind the iterator to the first element.
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*
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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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$this->_key = 0;
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$this->_current = null;
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return;
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}
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/**
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* Check if current position is valid.
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*
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* @return bool
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*/
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public function valid()
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{
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return true;
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}
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}
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