WitnessScriptHash::__construct() - Code Metrics - Inspection of "Merge pull request #239 from afk11/segwit" - Bit-Wasp/bitcoin-php - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 407a4a...aa6067 )

by thomas

created 2016-02-04 00:31 UTC

WitnessScriptHash::__construct() A

↳ Parent: WitnessScriptHash

Complexity

Conditions	3
Paths	3

Size

Total Lines	13
Code Lines	7

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
c	1
b	0
f	0
dl	0
loc	13
rs	9.4285
cc	3
eloc	7
nc	3
nop	2

<?php

namespace BitWasp\Bitcoin\Address;

use BitWasp\Bitcoin\Base58;
use BitWasp\Bitcoin\Bitcoin;
use BitWasp\Bitcoin\Network\NetworkInterface;
use BitWasp\Buffertools\Buffer;
use BitWasp\Buffertools\BufferInterface;

class WitnessScriptHash implements AddressInterface
{
    /**
     * @var int
     */
    private $witnessVersion;

    /**
     * @var BufferInterface
     */
    private $hash;

    /**
     * WitnessAddress constructor.
     * @param int $witnessVersion
     * @param BufferInterface $hash
     */
    public function __construct($witnessVersion, BufferInterface $hash)
    {
        if (!is_int($witnessVersion)) {
            throw new \RuntimeException('Witness version must be an integer');
        }

        if ($hash->getSize() !== 32) {
            throw new \RuntimeException('Hash for P2WSH address must be 32 bytes');
        }

        $this->witnessVersion = $witnessVersion;
        $this->hash = $hash->getHex();

    }

    /**
     * @return int
     */
    public function getWitnessVersion()
    {
        return $this->witnessVersion;
    }

    /**
     * @return BufferInterface|string
     */
    public function getHash()
    {
        return $this->hash;
class Author {
    private $name;

    public function __construct($name) {
        $this->name = $name;
    }

    public function getName() {
        return $this->name;
    }
}

abstract class Post {
    public function getAuthor() {
        return 'Johannes';
    }
}

class BlogPost extends Post {
    public function getAuthor() {
        return new Author('Johannes');
    }
}

class ForumPost extends Post { /* ... */ }

function my_function(Post $post) {
    echo strtoupper($post->getAuthor());
}
    }

    /**
     * @param NetworkInterface $network
     * @return string
     */
    public function getPrefixByte(NetworkInterface $network)
    {
        return $network->getP2WPKHByte();
    }

    /**
     * @param NetworkInterface|null $network
     * @return string
     */
    public function getAddress(NetworkInterface $network = null)
    {
        $network = $network ?: Bitcoin::getNetwork();
        $witnessByte = dechex($this->witnessVersion);
        $witnessByte = strlen($witnessByte) % 2 == 0 ? $witnessByte : '0' . $witnessByte;

        $payload = Buffer::hex($this->getPrefixByte($network) . $witnessByte . "00" . $this->getHash());
        return Base58::encodeCheck($payload);
    }
}


1			<?php
2
3			namespace BitWasp\Bitcoin\Address;
4
5			use BitWasp\Bitcoin\Base58;
6			use BitWasp\Bitcoin\Bitcoin;
7			use BitWasp\Bitcoin\Network\NetworkInterface;
8			use BitWasp\Buffertools\Buffer;
9			use BitWasp\Buffertools\BufferInterface;
10
11			class WitnessScriptHash implements AddressInterface
12			{
13			/**
14			* @var int
15			*/
16			private $witnessVersion;
17
18			/**
19			* @var BufferInterface
20			*/
21			private $hash;
22
23			/**
24			* WitnessAddress constructor.
25			* @param int $witnessVersion
26			* @param BufferInterface $hash
27			*/
28			public function __construct($witnessVersion, BufferInterface $hash)
29			{
30			if (!is_int($witnessVersion)) {
31			throw new \RuntimeException('Witness version must be an integer');
32			}
33
34			if ($hash->getSize() !== 32) {
35			throw new \RuntimeException('Hash for P2WSH address must be 32 bytes');
36			}
37
38			$this->witnessVersion = $witnessVersion;
39			$this->hash = $hash->getHex();
			0 ignored issues – show Documentation Bug introduced 2016-02-03 03:56 UTC by Report Bug Copy Issue Report It seems like `$hash->getHex()` of type `string` is incompatible with the declared type `object<BitWasp\Buffertools\BufferInterface>` of property `$hash`. Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property. Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property.. Loading history...
40			}
41
42			/**
43			* @return int
44			*/
45			public function getWitnessVersion()
46			{
47			return $this->witnessVersion;
48			}
49
50			/**
51			* @return BufferInterface\|string
52			*/
53			public function getHash()
54			{
55			return $this->hash;
			0 ignored issues – show Bug Best Practice introduced 2016-02-03 03:56 UTC by Report Bug Copy Issue Report The return type of `return $this->hash;` (`BitWasp\Buffertools\BufferInterface`) is incompatible with the return type declared by the interface `BitWasp\Bitcoin\Address\AddressInterface::getHash` of type `string`. If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design. Let’s take a look at an example: class Author { private $name; public function __construct($name) { $this->name = $name; } public function getName() { return $this->name; } } abstract class Post { public function getAuthor() { return 'Johannes'; } } class BlogPost extends Post { public function getAuthor() { return new Author('Johannes'); } } class ForumPost extends Post { /* ... */ } function my_function(Post $post) { echo strtoupper($post->getAuthor()); } Our function `my_function` expects a `Post` object, and outputs the author of the post. The base class `Post` returns a simple string and outputting a simple string will work just fine. However, the child class `BlogPost` which is a sub-type of `Post` instead decided to return an `object`, and is therefore violating the SOLID principles. If a `BlogPost` were passed to `my_function`, PHP would not complain, but ultimately fail when executing the `strtoupper` call in its body. Loading history...
56			}
57
58			/**
59			* @param NetworkInterface $network
60			* @return string
61			*/
62			public function getPrefixByte(NetworkInterface $network)
63			{
64			return $network->getP2WPKHByte();
65			}
66
67			/**
68			* @param NetworkInterface\|null $network
69			* @return string
70			*/
71			public function getAddress(NetworkInterface $network = null)
72			{
73			$network = $network ?: Bitcoin::getNetwork();
74			$witnessByte = dechex($this->witnessVersion);
75			$witnessByte = strlen($witnessByte) % 2 == 0 ? $witnessByte : '0' . $witnessByte;
76
77			$payload = Buffer::hex($this->getPrefixByte($network) . $witnessByte . "00" . $this->getHash());
78			return Base58::encodeCheck($payload);
79			}
80			}
81

Bit-Wasp / bitcoin-php

Push — master ( 407a4a...aa6067 )

WitnessScriptHash::__construct() A

Complexity

Size

Duplication

Importance

Duplication Side-by-Side

Filter issues like