TextLineLCS::initializeLcs() - Code Metrics - Inspection of "Merge pull request #1 from snebes/RangeDifference" - snebes/range-differencer - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 96cbf3...9bcdfc )

by Steve

created 2019-01-12 23:03 UTC

TextLineLCS::initializeLcs() A

↳ Parent: TextLineLCS

Complexity

Conditions	1
Paths	1

Size

Total Lines	3
Code Lines	1

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	1
eloc	1
nc	1
nop	1
dl	0
loc	3
rs	10
c	0
b	0
f	0

<?php

/**
 * (c) Steve Nebes <[email protected]>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

declare(strict_types=1);

namespace SN\RangeDifferencer\Core;

class TextLineLCS extends AbstractLCS
{
    /** @var TextLine[] */
    private $lines1 = [];

    /** @var TextLine[] */
    private $lines2 = [];

    /** @var array[TextLine[]] */

    private $lcs = [];

    /**
     * Default values.
     *
     * @param TextLine[] $lines1
     * @param TextLine[] $lines2
     */
    public function __construct(array $lines1, array $lines2)
    {
        $this->lines1 = $lines1;
        $this->lines2 = $lines2;
    }

    /**
     * @return array[TextLine[]]

     */
    public function getResult(): array
    {
        $length = $this->getLength();
        $result = array_fill(0, 2, null);

        if (0 === $length) {
            return $result;
        }

        $result[0] = $this->compactAndShiftLCS($this->lcs[0], $length, $this->lines1);
        $result[1] = $this->compactAndShiftLCS($this->lcs[1], $length, $this->lines2);

        return $result;
    }

    /**
     * @return int
     */
    protected function getLength1(): int
    {
        return \count($this->lines1);
    }

    /**
     * @return int
     */
    protected function getLength2(): int
    {
        return \count($this->lines2);
    }

    /**
     * @param int $i1
     * @param int $i2
     * @return bool
     */
    protected function isRangeEqual(int $i1, int $i2): bool
    {
        return $this->lines1[$i1]->isSameText($this->lines2[$i2]);
    }

    /**
     * @param int $sl1
     * @param int $sl2
     */
    protected function setLcs(int $sl1, int $sl2): void
    {
        $this->lcs[0][$sl1] = $this->lines1[$sl1];
        $this->lcs[1][$sl1] = $this->lines2[$sl2];
    }

    /**
     * @param int $lcsLength
     */
    protected function initializeLcs(int $lcsLength): void
    {
        $this->lcs = array_fill(0, 2, array_fill(0, $lcsLength, null));
    }

    /**
     * @param TextLine[] $lcsSide
     * @param int        $len
     * @param TextLine[] $original
     * @return array
     */
    private function compactAndShiftLCS(array &$lcsSide, int $len, array &$original): array
    {
        /** @var TextLine[] $result */
        $result = array_fill(0, $len, null);

        if (0 === $len) {
            return $result;
        }

        $j = 0;

        while (null === $lcsSide[$j]) {
            $j++;
        }

        $result[0] = $lcsSide[$j];
        $j++;

        for ($i = 1; $i < $len; $i++) {
            while (null === $lcsSide[$j]) {
                $j++;
            }

            if ($original[$result[$i - 1]->getLineNumber() + 1]->isSameText($lcsSide[$j])) {
                $result[$i] = $original[$result[$i - 1]->getLineNumber() + 1];
            } else {
                $result[$i] = $lcsSide[$j];
            }

            $j++;
        }

        return $result;
    }

    /**
     * @param string $text
     * @return TextLine[]
     */
    public static function getTextLines(string $text): array
    {
        $lines = [];
        $begin = 0;
        $end = static::getEOL($text, 0);
        $lineNum = 0;

        while (-1 !== $end) {
            $lines[] = new TextLine($lineNum++, \mb_substr($text, $begin, $end - $begin));
            $begin = $end + 1;
            $end = static::getEOL($text, $begin);

            if ($end === $begin && "\r" === \mb_substr($text, $begin - 1, 1)  && "\n" === \mb_substr($text, $begin, 1)) {
                // We have \r followed by \n, skip it.
                $begin = $end + 1;
                $end = static::getEOL($text, $begin);
            }
        }

        $lines[] = new TextLine($lineNum, \mb_substr($text, $begin));

        return $lines;
    }

    /**
     * @param string $text
     * @param int    $start
     * @return int
     */
    private static function getEOL(string $text, int $start): int
    {
        $max = \mb_strlen($text);

        for ($i = $start; $i < $max; $i++) {
            $c = \mb_substr($text, $i, 1);

            if ("\n" === $c || "\r" === $c) {
                return $i;
            }
        }

        return -1;
    }
}


1			<?php
2
3			/**
4			* (c) Steve Nebes <[email protected]>
5			*
6			* For the full copyright and license information, please view the LICENSE
7			* file that was distributed with this source code.
8			*/
9
10			declare(strict_types=1);
11
12			namespace SN\RangeDifferencer\Core;
13
14			class TextLineLCS extends AbstractLCS
15			{
16			/** @var TextLine[] */
17			private $lines1 = [];
18
19			/** @var TextLine[] */
20			private $lines2 = [];
21
22			/** @var array[TextLine[]] */
			0 ignored issues – show Documentation Bug introduced 2019-01-12 23:06 UTC by Report Bug Copy Issue Report The doc comment `array[TextLine[]]` at position `1` could not be parsed: Expected ']' at position 1, but found '['. Loading history...
23			private $lcs = [];
24
25			/**
26			* Default values.
27			*
28			* @param TextLine[] $lines1
29			* @param TextLine[] $lines2
30			*/
31			public function __construct(array $lines1, array $lines2)
32			{
33			$this->lines1 = $lines1;
34			$this->lines2 = $lines2;
35			}
36
37			/**
38			* @return array[TextLine[]]
			0 ignored issues – show Documentation Bug introduced 2019-01-12 23:06 UTC by Report Bug Copy Issue Report The doc comment `array[TextLine[]]` at position `1` could not be parsed: Expected ']' at position 1, but found '['. Loading history...
39			*/
40			public function getResult(): array
41			{
42			$length = $this->getLength();
43			$result = array_fill(0, 2, null);
44
45			if (0 === $length) {
46			return $result;
47			}
48
49			$result[0] = $this->compactAndShiftLCS($this->lcs[0], $length, $this->lines1);
50			$result[1] = $this->compactAndShiftLCS($this->lcs[1], $length, $this->lines2);
51
52			return $result;
53			}
54
55			/**
56			* @return int
57			*/
58			protected function getLength1(): int
59			{
60			return \count($this->lines1);
61			}
62
63			/**
64			* @return int
65			*/
66			protected function getLength2(): int
67			{
68			return \count($this->lines2);
69			}
70
71			/**
72			* @param int $i1
73			* @param int $i2
74			* @return bool
75			*/
76			protected function isRangeEqual(int $i1, int $i2): bool
77			{
78			return $this->lines1[$i1]->isSameText($this->lines2[$i2]);
79			}
80
81			/**
82			* @param int $sl1
83			* @param int $sl2
84			*/
85			protected function setLcs(int $sl1, int $sl2): void
86			{
87			$this->lcs[0][$sl1] = $this->lines1[$sl1];
88			$this->lcs[1][$sl1] = $this->lines2[$sl2];
89			}
90
91			/**
92			* @param int $lcsLength
93			*/
94			protected function initializeLcs(int $lcsLength): void
95			{
96			$this->lcs = array_fill(0, 2, array_fill(0, $lcsLength, null));
97			}
98
99			/**
100			* @param TextLine[] $lcsSide
101			* @param int $len
102			* @param TextLine[] $original
103			* @return array
104			*/
105			private function compactAndShiftLCS(array &$lcsSide, int $len, array &$original): array
106			{
107			/** @var TextLine[] $result */
108			$result = array_fill(0, $len, null);
109
110			if (0 === $len) {
111			return $result;
112			}
113
114			$j = 0;
115
116			while (null === $lcsSide[$j]) {
117			$j++;
118			}
119
120			$result[0] = $lcsSide[$j];
121			$j++;
122
123			for ($i = 1; $i < $len; $i++) {
124			while (null === $lcsSide[$j]) {
125			$j++;
126			}
127
128			if ($original[$result[$i - 1]->getLineNumber() + 1]->isSameText($lcsSide[$j])) {
129			$result[$i] = $original[$result[$i - 1]->getLineNumber() + 1];
130			} else {
131			$result[$i] = $lcsSide[$j];
132			}
133
134			$j++;
135			}
136
137			return $result;
138			}
139
140			/**
141			* @param string $text
142			* @return TextLine[]
143			*/
144			public static function getTextLines(string $text): array
145			{
146			$lines = [];
147			$begin = 0;
148			$end = static::getEOL($text, 0);
149			$lineNum = 0;
150
151			while (-1 !== $end) {
152			$lines[] = new TextLine($lineNum++, \mb_substr($text, $begin, $end - $begin));
153			$begin = $end + 1;
154			$end = static::getEOL($text, $begin);
155
156			if ($end === $begin && "\r" === \mb_substr($text, $begin - 1, 1) && "\n" === \mb_substr($text, $begin, 1)) {
157			// We have \r followed by \n, skip it.
158			$begin = $end + 1;
159			$end = static::getEOL($text, $begin);
160			}
161			}
162
163			$lines[] = new TextLine($lineNum, \mb_substr($text, $begin));
164
165			return $lines;
166			}
167
168			/**
169			* @param string $text
170			* @param int $start
171			* @return int
172			*/
173			private static function getEOL(string $text, int $start): int
174			{
175			$max = \mb_strlen($text);
176
177			for ($i = $start; $i < $max; $i++) {
178			$c = \mb_substr($text, $i, 1);
179
180			if ("\n" === $c \|\| "\r" === $c) {
181			return $i;
182			}
183			}
184
185			return -1;
186			}
187			}
188

snebes / range-differencer

Push — master ( 96cbf3...9bcdfc )

TextLineLCS::initializeLcs() A

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