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Completed
Push — master ( f49fbb...ecda1a )
by Dusan
01:23
created

MapIterator::current()   A

↳ Parent: MapIterator

Complexity

Conditions 2
Paths 2

Size

Total Lines 9
Code Lines 5

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 5
CRAP Score 2

Importance

Changes 0
Metric Value
dl 0
loc 9
ccs 5
cts 5
cp 1
rs 9.6666
c 0
b 0
f 0
cc 2
eloc 5
nc 2
nop 0
crap 2
1 
<?php
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/**
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 * This file is part of the iterators package.
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 *
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 * Copyright (c) Dusan Vejin
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 *
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 * For full copyright and license information, please refer to the LICENSE file,
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 * located at the package root folder.
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 */
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declare(strict_types=1);

            


            
                                                                                                            
                            
            
                                    
            
            

                
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namespace Dutek\Iterator;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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/**

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 * @author Dusan Vejin <[email protected]>

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 */

            


            
                                                                                                            
                            
            
                                    
            
            

                
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final class MapIterator extends \IteratorIterator

            


            
                                                                                                            
                            
            
                                    
            
            

                
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{

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    protected $callback;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    protected $callbackResult;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    protected $callbackResultCached;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    public function __construct(\Iterator $iterator, callable $callback)

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        parent::__construct($iterator);

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        $this->callback = $callback;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    }

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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    public function current()

            


            
                                                                        
                            
            
                                    
            
            

                
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    {

            


            
                                                                        
                            
            
                                    
            
            

                
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        if (!$this->callbackResultCached) {

            


            
                                                                        
                            
            
                                    
            
            

                
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            $this->callbackResult = ($this->callback)(parent::current());

            


            
                                                                        
                            
            
                                    
            
            

                
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            $this->callbackResultCached = true;

            


            
                                                                        
                            
            
                                    
            
            

                
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        }

            


            
                                                                        
                            
            
                                    
            
            

                
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        return $this->callbackResult;

            


            
                                                                        
                            
            
                                    
            
            

                
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    }

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    public function next()

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        parent::next();

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        $this->callbackResult = null;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        $this->callbackResultCached = false;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    }

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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}

            


            
                                                        
            
                                    
            
            

                
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