Stack::end() - Code Metrics - Inspection of "reduce number of coverage runs to 4 (#306)" - Bit-Wasp/bitcoin-php - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( b2abd4...891c12 )

by thomas

created 2016-05-28 14:29 UTC

Stack::end() A

↳ Parent: Stack

Complexity

Conditions	2
Paths	2

Size

Total Lines	9
Code Lines	5

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	4
CRAP Score	2.032

Importance

Changes

Metric	Value
cc	2
eloc	5
nc	2
nop	0
dl	0
loc	9
ccs	4
cts	5
cp	0.8
crap	2.032
rs	9.6666
c	0
b	0
f	0

<?php

namespace BitWasp\Bitcoin\Script\Interpreter;

use BitWasp\Buffertools\BufferInterface;

class Stack extends \SplDoublyLinkedList implements StackInterface
{
    public function __construct()
    {
        $this->setIteratorMode(\SplDoublyLinkedList::IT_MODE_FIFO | \SplDoublyLinkedList::IT_MODE_KEEP);
    }

    public function bottom()
    {
        return parent::offsetGet(count($this) - 1);
class Daddy
{
    protected function getFirstName()
    {
        return "Eidur";
    }

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

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

    /**
     * @param BufferInterface $value
     * @throws \InvalidArgumentException
     */
    private function typeCheck($value)
    {
        if (!$value instanceof BufferInterface) {
            throw new \InvalidArgumentException('Value was not of type Buffer');
        }
    }

    /**
     * @see \ArrayAccess::offsetGet()
     * @param int $offset
     * @return \BitWasp\Buffertools\BufferInterface
     */
    public function offsetGet($offset)
    {
        $offset = count($this) + $offset;
        return parent::offsetGet($offset);
    }

    /**
     * @see \ArrayAccess::offsetSet()
     * @param int $offset
     * @param BufferInterface $value
     * @throws \InvalidArgumentException
     */
    public function offsetSet($offset, $value)
    {
        $this->typeCheck($value);
        $offset = count($this) + $offset;
        parent::offsetSet($offset, $value);
    }

    /**
     * @see \ArrayAccess::offsetExists()
     * @param int $offset
     * @return bool
     */
    public function offsetExists($offset)
    {
        $offset = count($this) + $offset;
        return parent::offsetExists($offset);
    }

    /**
     * @see \ArrayAccess::offsetUnset()
     * @param int $offset
     */
    public function offsetUnset($offset)
    {
        $offset = count($this) + $offset;
        parent::offsetUnset($offset);
    }

    /**
     * @param int $first
     * @param int $second
     */
    public function swap($first, $second)
    {
        $val1 = $this->offsetGet($first);
        $val2 = $this->offsetGet($second);
        $this->offsetSet($second, $val1);
        $this->offsetSet($first, $val2);
    }

    /**
     * @param int $index
     * @param BufferInterface $value
     */
    public function add($index, $value)
    {
        $this->typeCheck($value);

        if (getenv('HHVM_VERSION') || version_compare(phpversion(), '5.5.0', 'lt')) {
            if ($index == $this->count()) {
                $this->push($value);
            } else {
                $size = count($this);
                $temp = [];
                for ($i = $size; $i > $index; $i--) {
                    array_unshift($temp, $this->pop());
                }

                $this->push($value);
                foreach ($temp as $value) {
                    $this->push($value);
                }
            }
        } else {
            parent::add($index, $value);
abstract class User
{
    /** @return string */
    abstract public function getPassword();
}

class MyUser extends User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}
        }
    }

    /**
     * @return int
     */
    public function end()
    {
        $count = count($this);
        if ($count === 0) {
            return 0;
        }

        return $count - 1;
    }

    /**
     * @param int $length
     * @return $this
     */
    public function resize($length)
    {
        if ($length > count($this)) {
            throw new \RuntimeException('Invalid start or length');
        }

        while (count($this) > $length) {
            $this->pop();
        }

        return $this;
    }
}


1		<?php
2
3		namespace BitWasp\Bitcoin\Script\Interpreter;
4
5		use BitWasp\Buffertools\BufferInterface;
6
7		class Stack extends \SplDoublyLinkedList implements StackInterface
8		{
9	580	public function __construct()
10		{
11	580	$this->setIteratorMode(\SplDoublyLinkedList::IT_MODE_FIFO \| \SplDoublyLinkedList::IT_MODE_KEEP);
12	580	}
13
14	32	public function bottom()
15		{
16	32	return parent::offsetGet(count($this) - 1);
		0 ignored issues – show Comprehensibility Bug introduced 2016-02-03 03:56 UTC by Report Bug Copy Issue Report It seems like you call parent on a different method (`offsetGet()` instead of `bottom()`). Are you sure this is correct? If so, you might want to change this to `$this->offsetGet()`. 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...
17		}
18
19		/**
20		* @param BufferInterface $value
21		* @throws \InvalidArgumentException
22		*/
23	28	private function typeCheck($value)
24		{
25	28	if (!$value instanceof BufferInterface) {
26		throw new \InvalidArgumentException('Value was not of type Buffer');
27		}
28	28	}
29
30		/**
31		* @see \ArrayAccess::offsetGet()
32		* @param int $offset
33		* @return \BitWasp\Buffertools\BufferInterface
34		*/
35	368	public function offsetGet($offset)
36		{
37	368	$offset = count($this) + $offset;
38	368	return parent::offsetGet($offset);
39		}
40
41		/**
42		* @see \ArrayAccess::offsetSet()
43		* @param int $offset
44		* @param BufferInterface $value
45		* @throws \InvalidArgumentException
46		*/
47	16	public function offsetSet($offset, $value)
48		{
49	16	$this->typeCheck($value);
50	16	$offset = count($this) + $offset;
51	16	parent::offsetSet($offset, $value);
52	16	}
53
54		/**
55		* @see \ArrayAccess::offsetExists()
56		* @param int $offset
57		* @return bool
58		*/
59	4	public function offsetExists($offset)
60		{
61	4	$offset = count($this) + $offset;
62	4	return parent::offsetExists($offset);
63		}
64
65		/**
66		* @see \ArrayAccess::offsetUnset()
67		* @param int $offset
68		*/
69	24	public function offsetUnset($offset)
70		{
71	24	$offset = count($this) + $offset;
72	24	parent::offsetUnset($offset);
73	20	}
74
75		/**
76		* @param int $first
77		* @param int $second
78		*/
79	16	public function swap($first, $second)
80		{
81	16	$val1 = $this->offsetGet($first);
82	16	$val2 = $this->offsetGet($second);
83	16	$this->offsetSet($second, $val1);
84	16	$this->offsetSet($first, $val2);
85	16	}
86
87		/**
88		* @param int $index
89		* @param BufferInterface $value
90		*/
91	12	public function add($index, $value)
92		{
93	12	$this->typeCheck($value);
94
95	12	if (getenv('HHVM_VERSION') \|\| version_compare(phpversion(), '5.5.0', 'lt')) {
96		if ($index == $this->count()) {
97		$this->push($value);
98		} else {
99		$size = count($this);
100		$temp = [];
101		for ($i = $size; $i > $index; $i--) {
102		array_unshift($temp, $this->pop());
103		}
104
105		$this->push($value);
106		foreach ($temp as $value) {
107		$this->push($value);
108		}
109		}
110		} else {
111	12	parent::add($index, $value);
		0 ignored issues – show Bug introduced 2015-11-22 19:28 UTC by Report Bug Copy Issue Report It seems like you code against a specific sub-type and not the parent class `SplDoublyLinkedList` as the method `add()` does only exist in the following sub-classes of `SplDoublyLinkedList`: `BitWasp\Bitcoin\Script\Interpreter\Stack`. Maybe you want to `instanceof` check for one of these explicitly? Let’s take a look at an example: abstract class User { /** @return string / abstract public function getPassword(); } class MyUser extends User { public function getPassword() { // return something } public function getDisplayName() { // return some name. } } class AuthSystem { public function authenticate(User $user) { $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName())); // do something. } } In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different sub-classes of User which does not have a getDisplayName() method, the code will break. Available Fixes Change the type-hint for the parameter: class AuthSystem { public function authenticate(MyUser $user) { / ... / } } Add an additional type-check: class AuthSystem { public function authenticate(User $user) { if ($user instanceof MyUser) { $this->logger->info(/* ... /); } // or alternatively if ( ! $user instanceof MyUser) { throw new \LogicException( '$user must be an instance of MyUser, ' .'other instances are not supported.' ); } } } Note:* PHP Analyzer uses reverse abstract interpretation to narrow down the types inside the if block in such a case. Add the method to the parent class: abstract class User { /** @return string / abstract public function getPassword(); /* @return string */ abstract public function getDisplayName(); } Loading history...
112		}
113	8	}
114
115		/**
116		* @return int
117		*/
118	540	public function end()
119		{
120	540	$count = count($this);
121	540	if ($count === 0) {
122	540	return 0;
123		}
124
125		return $count - 1;
126		}
127
128		/**
129		* @param int $length
130		* @return $this
131		*/
132	20	public function resize($length)
133		{
134	20	if ($length > count($this)) {
135		throw new \RuntimeException('Invalid start or length');
136		}
137
138	20	while (count($this) > $length) {
139	20	$this->pop();
140	15	}
141
142	20	return $this;
143		}
144		}
145

Bit-Wasp / bitcoin-php

Push — master ( b2abd4...891c12 )

Stack::end() A

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