Transfer\Adapter\Transaction\Iterator\CallbackIterator

Complexity

Total Complexity

6

Size/Duplication

Total Lines	73
Duplicated Lines	0 %

Coupling/Cohesion

Components	3
Dependencies	0

Test Coverage

Coverage

100%

Importance

Changes

0

6 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	5	1
A	next()	0	4	1
A	current()	0	4	1
A	key()	0	4	1
A	valid()	0	4	1
A	rewind()	0	4	1

<?php

/*
 * This file is part of Transfer.
 *
 * For the full copyright and license information, please view the LICENSE file located
 * in the root directory.
 */

namespace Transfer\Adapter\Transaction\Iterator;

/**
 * Iterator implementation with callback support.
 */
class CallbackIterator implements \Iterator
{
    /**
     * @var callback Callback for returning current element
     */
    protected $current;

    /**
     * @var callback Callback for validating next element
     */
    protected $valid;

    /**
     * @var int Iteration
     */
    protected $iteration = 0;

    /**
     * @param callback $valid   Callback for validating next element
     * @param callback $current Callback for returning current element
     */
    public function __construct($valid, $current)
    {
        $this->valid = $valid;
        $this->current = $current;
    }

    /**
     * Moves internal pointer to next position.
     */
    public function next()
    {
        ++$this->iteration;
    }

    /**
     * Returns current element.
     *
     * @return mixed Current element
     */
    public function current()
    {
        return call_user_func_array($this->current, array($this));
    }

    /**
     * Returns current position.
     *
     * @return int Current position
     */
    public function key()
    {
        return $this->iteration;
    }

    /**
     * Tests, if next element is valid.
     *
     * @return bool True, if valid
     */
    public function valid()
    {
        return (bool) call_user_func_array($this->valid, array($this));
    }

    /**
     * Sets internal pointer to initial position.
     */
    public function rewind()
    {
        $this->iteration = 0;
    }
}