LookAheadIterator::__construct() - Code Metrics - SuRaMoN/itertools - Measure and Improve Code Quality continuously with Scrutinizer

LookAheadIterator::__construct() A
last analyzed 2020-05-28 15:38 UTC

↳ Parent: LookAheadIterator

Complexity

Conditions	1
Paths	1

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	7
rs	10
c	0
b	0
f	0
cc	1
nc	1
nop	1

<?php

namespace itertools;

use IteratorIterator;


class LookAheadIterator extends IteratorIterator
{
    protected $lookAheads;
    protected $skipAutoRewind;
    protected $skipNextNormalRewind;

    public static function newInstance($innerIterator)
    {
        if($innerIterator instanceof self) {
            return $innerIterator;
        }
        return new self($innerIterator);
    }

    public function __construct($innerIterator)
    {
        parent::__construct(IterUtil::asIterator($innerIterator));
        $this->lookAheads = new Queue();
        $this->skipAutoRewind = false;
        $this->skipNextNormalRewind = false;
    }

    public function next()
    {
        if($this->lookAheads->isEmpty()) {
            return parent::next();
        }
        $this->lookAheads->shift();
    }

    public function valid()
    {
        if(! $this->lookAheads->isEmpty()) {
            return true;
        }
        return parent::valid();
    }

    public function key()
    {
        if(! $this->lookAheads->isEmpty()) {
            return $this->lookAheads->bottom()->key;
        }
        return parent::key();
    }

    public function current()
    {
        if(! $this->lookAheads->isEmpty()) {
            return $this->lookAheads->bottom()->value;
        }
        return parent::current();
    }

    public function prefetchUpTo($prefetchCount)
    {
        $this->autoRewind();
        $prefetchCount = max(0, $prefetchCount - $this->lookAheads->count());
        for($i = 0; $i < $prefetchCount; $i += 1) {
            if(! parent::valid()) {
class Daddy
{
    protected function getFirstName()
    {
        return "Eidur";
    }

    protected function getSurName()
    {
        return "Gudjohnsen";
    }
}

class Son
{
    public function getFirstName()
    {
        return parent::getSurname();
    }
}
                return;
            }
            $this->lookAheads->push((object) array('value' => parent::current(), 'key' => parent::key()));
class Daddy
{
    protected function getFirstName()
    {
        return "Eidur";
    }

    protected function getSurName()
    {
        return "Gudjohnsen";
    }
}

class Son
{
    public function getFirstName()
    {
        return parent::getSurname();
    }
}
            parent::next();
class Daddy
{
    protected function getFirstName()
    {
        return "Eidur";
    }

    protected function getSurName()
    {
        return "Gudjohnsen";
    }
}

class Son
{
    public function getFirstName()
    {
        return parent::getSurname();
    }
}
        }
    }

    public function getNext($n = 1)
    {
        $this->prefetchUpTo($n + 1);
        return $this->lookAheads->offsetGet($n)->value;
    }

    public function hasAny()
    {
        return $this->hasNext(0);
    }

    public function getNextKey($n = 1)
    {
        $this->prefetchUpTo($n + 1);
        return $this->lookAheads->offsetGet($n)->key;
    }

    public function hasNext($n = 1)
    {
        $this->prefetchUpTo($n + 1);
        return $this->lookAheads->count() > $n;
    }

    public function rewind()
    {
        if($this->skipNextNormalRewind) {
            $this->skipNextNormalRewind = false;
            return;
        }
        parent::rewind();
        $this->skipAutoRewind = true;
    }

    protected function autoRewind()
    {
        if(! $this->skipAutoRewind) {
            parent::rewind();
class Daddy
{
    protected function getFirstName()
    {
        return "Eidur";
    }

    protected function getSurName()
    {
        return "Gudjohnsen";
    }
}

class Son
{
    public function getFirstName()
    {
        return parent::getSurname();
    }
}
            $this->skipNextNormalRewind = true;
            $this->skipAutoRewind = true;
        }
    }
}


1			<?php
2
3			namespace itertools;
4
5			use IteratorIterator;
6
7
8			class LookAheadIterator extends IteratorIterator
9			{
10			protected $lookAheads;
11			protected $skipAutoRewind;
12			protected $skipNextNormalRewind;
13
14			public static function newInstance($innerIterator)
15			{
16			if($innerIterator instanceof self) {
17			return $innerIterator;
18			}
19			return new self($innerIterator);
20			}
21
22			public function __construct($innerIterator)
23			{
24			parent::__construct(IterUtil::asIterator($innerIterator));
25			$this->lookAheads = new Queue();
26			$this->skipAutoRewind = false;
27			$this->skipNextNormalRewind = false;
28			}
29
30			public function next()
31			{
32			if($this->lookAheads->isEmpty()) {
33			return parent::next();
34			}
35			$this->lookAheads->shift();
36			}
37
38			public function valid()
39			{
40			if(! $this->lookAheads->isEmpty()) {
41			return true;
42			}
43			return parent::valid();
44			}
45
46			public function key()
47			{
48			if(! $this->lookAheads->isEmpty()) {
49			return $this->lookAheads->bottom()->key;
50			}
51			return parent::key();
52			}
53
54			public function current()
55			{
56			if(! $this->lookAheads->isEmpty()) {
57			return $this->lookAheads->bottom()->value;
58			}
59			return parent::current();
60			}
61
62			public function prefetchUpTo($prefetchCount)
63			{
64			$this->autoRewind();
65			$prefetchCount = max(0, $prefetchCount - $this->lookAheads->count());
66			for($i = 0; $i < $prefetchCount; $i += 1) {
67			if(! parent::valid()) {
			0 ignored issues – show Comprehensibility Bug introduced 2015-11-27 15:17 UTC by Report Bug Copy Issue Report It seems like you call parent on a different method (`valid()` instead of `prefetchUpTo()`). Are you sure this is correct? If so, you might want to change this to `$this->valid()`. This check looks for a call to a parent method whose name is different than the method from which it is called. Consider the following code: class Daddy { protected function getFirstName() { return "Eidur"; } protected function getSurName() { return "Gudjohnsen"; } } class Son { public function getFirstName() { return parent::getSurname(); } } The `getFirstName()` method in the `Son` calls the wrong method in the parent class. Loading history...
68			return;
69			}
70			$this->lookAheads->push((object) array('value' => parent::current(), 'key' => parent::key()));
			0 ignored issues – show Comprehensibility Bug introduced 2015-11-27 15:17 UTC by Report Bug Copy Issue Report It seems like you call parent on a different method (`current()` instead of `prefetchUpTo()`). Are you sure this is correct? If so, you might want to change this to `$this->current()`. This check looks for a call to a parent method whose name is different than the method from which it is called. Consider the following code: class Daddy { protected function getFirstName() { return "Eidur"; } protected function getSurName() { return "Gudjohnsen"; } } class Son { public function getFirstName() { return parent::getSurname(); } } The `getFirstName()` method in the `Son` calls the wrong method in the parent class. Loading history... Comprehensibility Bug introduced 2015-11-27 15:17 UTC by Report Bug Copy Issue Report It seems like you call parent on a different method (`key()` instead of `prefetchUpTo()`). Are you sure this is correct? If so, you might want to change this to `$this->key()`. This check looks for a call to a parent method whose name is different than the method from which it is called. Consider the following code: class Daddy { protected function getFirstName() { return "Eidur"; } protected function getSurName() { return "Gudjohnsen"; } } class Son { public function getFirstName() { return parent::getSurname(); } } The `getFirstName()` method in the `Son` calls the wrong method in the parent class. Loading history...
71			parent::next();
			0 ignored issues – show Comprehensibility Bug introduced 2015-11-27 15:17 UTC by Report Bug Copy Issue Report It seems like you call parent on a different method (`next()` instead of `prefetchUpTo()`). Are you sure this is correct? If so, you might want to change this to `$this->next()`. This check looks for a call to a parent method whose name is different than the method from which it is called. Consider the following code: class Daddy { protected function getFirstName() { return "Eidur"; } protected function getSurName() { return "Gudjohnsen"; } } class Son { public function getFirstName() { return parent::getSurname(); } } The `getFirstName()` method in the `Son` calls the wrong method in the parent class. Loading history...
72			}
73			}
74
75			public function getNext($n = 1)
76			{
77			$this->prefetchUpTo($n + 1);
78			return $this->lookAheads->offsetGet($n)->value;
79			}
80
81			public function hasAny()
82			{
83			return $this->hasNext(0);
84			}
85
86			public function getNextKey($n = 1)
87			{
88			$this->prefetchUpTo($n + 1);
89			return $this->lookAheads->offsetGet($n)->key;
90			}
91
92			public function hasNext($n = 1)
93			{
94			$this->prefetchUpTo($n + 1);
95			return $this->lookAheads->count() > $n;
96			}
97
98			public function rewind()
99			{
100			if($this->skipNextNormalRewind) {
101			$this->skipNextNormalRewind = false;
102			return;
103			}
104			parent::rewind();
105			$this->skipAutoRewind = true;
106			}
107
108			protected function autoRewind()
109			{
110			if(! $this->skipAutoRewind) {
111			parent::rewind();
			0 ignored issues – show Comprehensibility Bug introduced 2015-11-27 15:17 UTC by Report Bug Copy Issue Report It seems like you call parent on a different method (`rewind()` instead of `autoRewind()`). Are you sure this is correct? If so, you might want to change this to `$this->rewind()`. This check looks for a call to a parent method whose name is different than the method from which it is called. Consider the following code: class Daddy { protected function getFirstName() { return "Eidur"; } protected function getSurName() { return "Gudjohnsen"; } } class Son { public function getFirstName() { return parent::getSurname(); } } The `getFirstName()` method in the `Son` calls the wrong method in the parent class. Loading history...
112			$this->skipNextNormalRewind = true;
113			$this->skipAutoRewind = true;
114			}
115			}
116			}
117

SuRaMoN / itertools

LookAheadIterator::__construct() A last analyzed 2020-05-28 15:38 UTC

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LookAheadIterator::__construct() A
last analyzed 2020-05-28 15:38 UTC