Stack::__construct() - Code Metrics - Inspection of "InputSigner: use Interpreter to decode scriptSig" - Bit-Wasp/bitcoin-php - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#388)

by thomas

created 2016-11-10 12:17 UTC

Stack::__construct() A

↳ Parent: Stack

Complexity

Conditions	1
Paths	1

Size

Total Lines	6
Code Lines	4

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	3
CRAP Score	1

Importance

Changes

Metric	Value
cc	1
eloc	4
nc	1
nop	1
dl	0
loc	6
ccs	3
cts	3
cp	1
crap	1
rs	9.4285
c	0
b	0
f	0

<?php

namespace BitWasp\Bitcoin\Script\Interpreter;

use BitWasp\Buffertools\BufferInterface;

class Stack implements \Countable, \ArrayAccess, \Iterator
{
    /**
     * @var int
     */
    private $position = 0;

    /**
     * @var array
     */
    private $values = [];

    /**
     * Stack constructor.
     * @param BufferInterface[] $values
     */
    public function __construct(array $values = [])
    {
        $this->values = array_map(function (BufferInterface $value) {
            return $value;
        }, $values);
    }

    /**
     * @return BufferInterface[]
     */
    public function all()
    {
        return $this->values;
    }

    public function current()
    {
        return $this->values[$this->position];
    }

    public function next()
    {
        ++$this->position;
    }

    public function key()
    {
        return $this->position;
    }

    public function valid()
    {
        return isset($this->values[$this->position]);
    }

    public function rewind()
    {
        $this->position = 0;
    }

    public function count()
    {
        return count($this->values);
    }

    public function isEmpty()
    {
        return count($this->values) === 0;
    }

    public function bottom()
    {
        $count = count($this);
        if ($count < 1) {
            throw new \RuntimeException('No values in stack');
        }

        return $this->values[$count - 1];
    }

    /**
     * @see \ArrayAccess::offsetGet()
     * @param int $offset
     * @return \BitWasp\Buffertools\BufferInterface
     */
    public function offsetGet($offset)
    {
        $index = count($this) + $offset;
        if (!isset($this->values[$index])) {
            throw new \RuntimeException('No value at this position');
        }

        return $this->values[$index];
    }

    /**
     * @see \ArrayAccess::offsetSet()
     * @param int $offset
     * @param BufferInterface $value
     * @throws \InvalidArgumentException
     */
    public function offsetSet($offset, $value)
    {
        if (!$value instanceof BufferInterface) {
            throw new \InvalidArgumentException;
        }

        $count = count($this);
        $index = $count + $offset;
        if (isset($this->values[$index])) {
            $this->values[$index] = $value;
            return;
        }

        if ($index !== $count) {
            throw new \RuntimeException('Index must be end position');
        }
    }

    /**
     * @see \ArrayAccess::offsetExists()
     * @param int $offset
     * @return bool
     */
    public function offsetExists($offset)
    {
        $index = count($this) + $offset;
        return isset($this->values[$index]);
    }

    /**
     * @see \ArrayAccess::offsetUnset()
     * @param int $offset
     */
    public function offsetUnset($offset)
    {
        $count = count($this);
        $index = $count + $offset;
        if (!isset($this->values[$index])) {
            throw new \RuntimeException('Nothing at this position');
        }

        array_splice($this->values, $index, 1);
    }

    /**
     * @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 $offset
     * @param BufferInterface $value
     */
    public function add($offset, $value)
    {
        $size = count($this);
        $index = $size + $offset;
        if ($index > $size) {
            throw new \RuntimeException('Invalid add position');
        }

        // Unwind current values, push provided value, reapply popped values
        $values = [];
        for ($i = $size; $i > $index; $i--) {
            $values[] = $this->pop();
        }

        $this->push($value);
        for ($i = count($values); $i > 0; $i--) {
            $this->push(array_pop($values));
        }
    }

    public function pop()
    {
        $count = count($this);
        if ($count === 0) {
            throw new \RuntimeException('Cannot pop from empty stack');
        }

        $value = array_pop($this->values);
        return $value;
    }

    public function push($buffer)
    {
        $this->values[] = $buffer;
    }

    /**
     * @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 implements \Countable, \ArrayAccess, \Iterator
8		{
9		/**
10		* @var int
11		*/
12		private $position = 0;
13
14		/**
15		* @var array
16		*/
17		private $values = [];
18
19	2640	/**
20		* Stack constructor.
21	2640	* @param BufferInterface[] $values
22		*/
23		public function __construct(array $values = [])
24	2640	{
25		$this->values = array_map(function (BufferInterface $value) {
26	2640	return $value;
27	2640	}, $values);
28		}
29
30		/**
31		* @return BufferInterface[]
32		*/
33		public function all()
34	4455	{
35		return $this->values;
36	4455	}
37
38		public function current()
39	4455	{
40		return $this->values[$this->position];
41	4455	}
42	4455
43		public function next()
44	4411	{
45		++$this->position;
46	4411	}
47
48		public function key()
49	3603	{
50		return $this->position;
51	3603	}
52
53		public function valid()
54	146	{
55		return isset($this->values[$this->position]);
56	146	}
57	146
58		public function rewind()
59		{
60		$this->position = 0;
61	146	}
62
63		public function count()
64		{
65		return count($this->values);
66		}
67
68		public function isEmpty()
69	3419	{
70		return count($this->values) === 0;
71	3419	}
72	3419
73	4	public function bottom()
74		{
75		$count = count($this);
76	3419	if ($count < 1) {
77		throw new \RuntimeException('No values in stack');
78		}
79
80		return $this->values[$count - 1];
81		}
82
83		/**
84		* @see \ArrayAccess::offsetGet()
85	74	* @param int $offset
86		* @return \BitWasp\Buffertools\BufferInterface
87	74	*/
88		public function offsetGet($offset)
89		{
90		$index = count($this) + $offset;
91	74	if (!isset($this->values[$index])) {
92	74	throw new \RuntimeException('No value at this position');
93	74	}
94	74
95	74	return $this->values[$index];
96		}
97
98		/**
99		* @see \ArrayAccess::offsetSet()
100		* @param int $offset
101		* @param BufferInterface $value
102		* @throws \InvalidArgumentException
103		*/
104		public function offsetSet($offset, $value)
105		{
106		if (!$value instanceof BufferInterface) {
107		throw new \InvalidArgumentException;
108	6	}
109
110	6	$count = count($this);
111	6	$index = $count + $offset;
112		if (isset($this->values[$index])) {
113		$this->values[$index] = $value;
114		return;
115		}
116
117		if ($index !== $count) {
118	96	throw new \RuntimeException('Index must be end position');
119		}
120	96	}
121	96
122	96	/**
123	6	* @see \ArrayAccess::offsetExists()
124		* @param int $offset
125		* @return bool
126	90	*/
127	90	public function offsetExists($offset)
128		{
129		$index = count($this) + $offset;
130		return isset($this->values[$index]);
131		}
132
133	74	/**
134		* @see \ArrayAccess::offsetUnset()
135	74	* @param int $offset
136	74	*/
137	74	public function offsetUnset($offset)
138	74	{
139	74	$count = count($this);
140		$index = $count + $offset;
141		if (!isset($this->values[$index])) {
142		throw new \RuntimeException('Nothing at this position');
143		}
144
145	24	array_splice($this->values, $index, 1);
146		}
147	24
148	24	/**
149	24	* @param int $first
150		* @param int $second
151		*/
152		public function swap($first, $second)
153		{
154	24	$val1 = $this->offsetGet($first);
155	24	$val2 = $this->offsetGet($second);
156	24	$this->offsetSet($second, $val1);
157	10	$this->offsetSet($first, $val2);
158		}
159	24
160	24	/**
161	24	* @param int $offset
162	10	* @param BufferInterface $value
163	24	*/
164		public function add($offset, $value)
165	3053	{
166		$size = count($this);
167	3053	$index = $size + $offset;
168	3053	if ($index > $size) {
169	6	throw new \RuntimeException('Invalid add position');
170		}
171
172	3047	// Unwind current values, push provided value, reapply popped values
173	3047	$values = [];
174		for ($i = $size; $i > $index; $i--) {
175		$values[] = $this->pop();
176	4201	}
177
178	4201	$this->push($value);
179	4201	for ($i = count($values); $i > 0; $i--) {
180		$this->push(array_pop($values));
181		}
182		}
183
184		public function pop()
185		{
186		$count = count($this);
187		if ($count === 0) {
188		throw new \RuntimeException('Cannot pop from empty stack');
189		}
190
191		$value = array_pop($this->values);
192		return $value;
193		}
194
195		public function push($buffer)
196		{
197		$this->values[] = $buffer;
198	31	}
199
200	31	/**
201		* @return int
202		*/
203		public function end()
204	31	{
205	31	$count = count($this);
206	13	if ($count === 0) {
207		return 0;
208	31	}
209
210		return $count - 1;
211		}
212
213		/**
214		* @param int $length
215		* @return $this
216		*/
217		public function resize($length)
218		{
219		if ($length > count($this)) {
220		throw new \RuntimeException('Invalid start or length');
221		}
222
223		while (count($this) > $length) {
224		$this->pop();
225		}
226
227		return $this;
228		}
229		}
230

Bit-Wasp / bitcoin-php

Pull Request — master (#388)

Stack::__construct() A

Complexity

Size

Duplication

Code Coverage

Importance

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