ContentParser::getMessageStringFromTokens() - Code Metrics - Inspection of "Simple extractor" - yiisoft/translator - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Pull Request — master (#41)

by Def

created 2021-03-22 18:59 UTC

ContentParser::getMessageStringFromTokens() B

↳ Parent: ContentParser

Complexity

Conditions	7
Paths	5

Size

Total Lines	23
Code Lines	14

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	14
CRAP Score	7

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
eloc	14
c	1
b	0
f	0
dl	0
loc	23
ccs	14
cts	14
cp	1
rs	8.8333
cc	7
nc	5
nop	1
crap	7

<?php

declare(strict_types=1);

namespace Yiisoft\Translator\Extractor;

/**
 * Extractor messages
 */
final class ContentParser
{
    private string $translator = '->translate';

    /** @var array<string|array{0: int, 1: string, 2: int}> */
    private array $translatorTokens = [];

    private int $sizeOfTranslator = 0;

    private string $defaultCategory = '';

    private static array $commaSpare = [
        ')' => '(',
        ']' => '[',
        '}' => '{',
    ];

    /**
     * @psalm-var array<array<string|array{0: int, 1: string, 2: int}>>
     */
    private array $skippedLines = [];

    public function __construct(?string $defaultCategory = null, ?string $translator = null)
    {
        $this->defaultCategory = $defaultCategory ?? $this->defaultCategory;
        $this->setTranslator($translator === null ? $this->translator : $translator);
    }

    private function setTranslator(string $translator): void
    {
        $this->translator = $translator;
        $translatorTokens = token_get_all('<?php ' . $this->translator);
        array_shift($translatorTokens);
        $this->translatorTokens = $translatorTokens;
        $this->sizeOfTranslator = count($this->translatorTokens);

        if ($this->sizeOfTranslator < 2) {
            throw new \RuntimeException('Translator tokens cannot be shorttest 2 tokens.');
        }
    }

    /**
     * @param string $content
     *
     * @psalm-return array<array-key|string, mixed|non-empty-list<string>>
     */
    public function extract(string $content): array
    {
        $this->skippedLines = [];
        $tokens = token_get_all($content);

        return $this->extractMessagesFromTokens($tokens);
    }

    /**
     * @psalm-param array<string|array{0: int, 1: string, 2: int}> $tokens
     *
     * @param array $tokens
     *
     * @psalm-return array<array-key|string, mixed|non-empty-list<string>>
     *
     * @return array
     */
    private function extractMessagesFromTokens(array $tokens): array
    {
        $messages = $buffer = [];
        $matchedTokensCount = $pendingParenthesisCount = 0;
        $isStartedTranslator = false;

        foreach ($tokens as $tokenIndex => $token) {
            if (in_array($token[0], [T_WHITESPACE, T_COMMENT])) {
                continue;
            }

            if ($isStartedTranslator) {
                if ($this->tokensEqual($token, ')')) {
                    if ($pendingParenthesisCount === 0) {
                        $messages = array_merge_recursive($messages, $this->extractParametersFromTokens($buffer));
                        $isStartedTranslator = false;
                        $pendingParenthesisCount = 0;
                        $buffer = [];
                        continue;
                    }
                    $pendingParenthesisCount--;
                } elseif ($this->tokensEqual($token, '(')) {
                    $pendingParenthesisCount++;
                }
                $buffer[] = $token;
            } else {
                if ($matchedTokensCount === $this->sizeOfTranslator) {
                    if ($this->tokensEqual($token, '(')) {
                        $isStartedTranslator = true;
                        continue;
                    }
                    $matchedTokensCount = 0;
                }

                if ($this->tokensEqual($token, $this->translatorTokens[$matchedTokensCount])) {
                    $matchedTokensCount++;
                } else {
                    $matchedTokensCount = 0;
                }
            }
        }

        return $messages;
    }

    /**
     * @param array $tokens
     * @psalm-param array<string|array{0: int, 1: string, 2: int}> $tokens
     *
     * @return array
     * @psalm-return array<array-key|string, mixed|non-empty-list<string>>
     */
    private function extractParametersFromTokens(array $tokens): array
    {
        $parameters = $this->splitTokensAsParams($tokens);

        if (!isset($parameters['id'])) {
            $this->skippedLines[] = $tokens;
            return [];
        }

        $messages = [$parameters['category'] ?? $this->defaultCategory => [$parameters['id']]];

        // Get translation messages from parameters
        if (isset($parameters['parameters'])) {
            $messages = array_merge_recursive($messages, $this->extractMessagesFromTokens($parameters['parameters']));
        }

        return $messages;
    }

    /**
     * @psalm-param array<string|array{0: int, 1: string, 2: int}> $tokens
     *
     * @psalm-return array{category?: null|string, id?: null|string, parameters?: null|list<array{0: int, 1: string, 2: int}|string>}
     */
    private function splitTokensAsParams(array $tokens): array
    {
        $parameters = [];
        $parameterIndex = 0;
        $commaStack = [];

        foreach ($tokens as $token) {
            if (empty($commaStack) && $token === ',') {
                $parameterIndex++;
                continue;
            }
            if (is_string($token)) {
                if (in_array($token, self::$commaSpare)) {
                    $commaStack[] = $token;
                } elseif (isset(self::$commaSpare[$token]) && array_pop($commaStack) !== self::$commaSpare[$token]) {
                    return [];
                }
            }
            $parameters[$parameterIndex][] = $token;
        }

        return [
            'id' => $this->getMessageStringFromTokens($parameters[0] ?? []),
            'parameters' => $parameters[1] ?? null,
            'category' => $this->getMessageStringFromTokens($parameters[2] ?? []),
        ];
    }

    /**
     * @psalm-param array<string|array{0: int, 1: string, 2: int}> $tokens
     *
     * @return string|null
     */
    private function getMessageStringFromTokens(array $tokens): ?string
    {
        if (empty($tokens) || $tokens[0][0] !== T_CONSTANT_ENCAPSED_STRING) {
            return null;
        }

        $fullMessage = substr($tokens[0][1], 1, -1);

        $i = 1;
        $countTokens = count($tokens);
        while ($i < $countTokens && $tokens[$i] === '.') {
            if ($tokens[$i + 1][0] === T_CONSTANT_ENCAPSED_STRING) {
                $fullMessage .= substr($tokens[$i + 1][1], 1, -1);
            } elseif (in_array($tokens[$i + 1][0], [T_LNUMBER, T_DNUMBER])) {
                $fullMessage .= $tokens[$i + 1][1];
            } else {
                return null;
            }

            $i += 2;
        }

        return stripcslashes($fullMessage);
    }

    /**
     * Finds out if two PHP tokens are equal.
     *
     * @param array{0: int, 1: string, 2: int}|string $a
     * @param array{0: int, 1: string, 2: int}|string $b
     *
     * @return bool
     */
    private function tokensEqual($a, $b): bool
    {
        if (is_string($a)) {
            return $a === $b;
        }

        return $a[0] === $b[0] && $a[1] == $b[1];
    }

    public function getDefaultCategory(): string
    {
        return $this->defaultCategory;
    }

    public function setDefaultCategory(string $defaultCategory): void
    {
        $this->defaultCategory = $defaultCategory;
    }

    public function hasSkippedLines(): bool
    {
        return !empty($this->skippedLines);
    }

    /**
     * @psalm-return array<array<string|array{0: int, 1: string, 2: int}>>
     */
    public function getSkippedLines(): array
    {
        return $this->skippedLines;
    }
}


1		<?php
2
3		declare(strict_types=1);
4
5		namespace Yiisoft\Translator\Extractor;
6
7		/**
8		* Extractor messages
9		*/
10		final class ContentParser
11		{
12		private string $translator = '->translate';
13
14		/** @var array<string\|array{0: int, 1: string, 2: int}> */
15		private array $translatorTokens = [];
16
17		private int $sizeOfTranslator = 0;
18
19		private string $defaultCategory = '';
20
21		private static array $commaSpare = [
22		')' => '(',
23		']' => '[',
24		'}' => '{',
25		];
26
27		/**
28		* @psalm-var array<array<string\|array{0: int, 1: string, 2: int}>>
29		*/
30		private array $skippedLines = [];
31
32	12	public function __construct(?string $defaultCategory = null, ?string $translator = null)
33		{
34	12	$this->defaultCategory = $defaultCategory ?? $this->defaultCategory;
35	12	$this->setTranslator($translator === null ? $this->translator : $translator);
36	11	}
37
38	12	private function setTranslator(string $translator): void
39		{
40	12	$this->translator = $translator;
41	12	$translatorTokens = token_get_all('<?php ' . $this->translator);
42	12	array_shift($translatorTokens);
43	12	$this->translatorTokens = $translatorTokens;
44	12	$this->sizeOfTranslator = count($this->translatorTokens);
45
46	12	if ($this->sizeOfTranslator < 2) {
47	1	throw new \RuntimeException('Translator tokens cannot be shorttest 2 tokens.');
48		}
49	11	}
50
51		/**
52		* @param string $content
53		*
54		* @psalm-return array<array-key\|string, mixed\|non-empty-list<string>>
55		*/
56	10	public function extract(string $content): array
57		{
58	10	$this->skippedLines = [];
59	10	$tokens = token_get_all($content);
60
61	10	return $this->extractMessagesFromTokens($tokens);
62		}
63
64		/**
65		* @psalm-param array<string\|array{0: int, 1: string, 2: int}> $tokens
66		*
67		* @param array $tokens
68		*
69		* @psalm-return array<array-key\|string, mixed\|non-empty-list<string>>
70		*
71		* @return array
72		*/
73	10	private function extractMessagesFromTokens(array $tokens): array
74		{
75	10	$messages = $buffer = [];
76	10	$matchedTokensCount = $pendingParenthesisCount = 0;
77	10	$isStartedTranslator = false;
78
79	10	foreach ($tokens as $tokenIndex => $token) {
80	10	if (in_array($token[0], [T_WHITESPACE, T_COMMENT])) {
81	10	continue;
82		}
83
84	10	if ($isStartedTranslator) {
85	10	if ($this->tokensEqual($token, ')')) {
86	10	if ($pendingParenthesisCount === 0) {
87	10	$messages = array_merge_recursive($messages, $this->extractParametersFromTokens($buffer));
88	10	$isStartedTranslator = false;
89	10	$pendingParenthesisCount = 0;
90	10	$buffer = [];
91	10	continue;
92		}
93	10	$pendingParenthesisCount--;
94	10	} elseif ($this->tokensEqual($token, '(')) {
95	10	$pendingParenthesisCount++;
96		}
97	10	$buffer[] = $token;
98		} else {
99	10	if ($matchedTokensCount === $this->sizeOfTranslator) {
100	10	if ($this->tokensEqual($token, '(')) {
101	10	$isStartedTranslator = true;
102	10	continue;
103		}
104	10	$matchedTokensCount = 0;
105		}
106
107	10	if ($this->tokensEqual($token, $this->translatorTokens[$matchedTokensCount])) {
108	10	$matchedTokensCount++;
109		} else {
110	10	$matchedTokensCount = 0;
111		}
112		}
113		}
114
115	10	return $messages;
116		}
117
118		/**
119		* @param array $tokens
120		* @psalm-param array<string\|array{0: int, 1: string, 2: int}> $tokens
121		*
122		* @return array
123		* @psalm-return array<array-key\|string, mixed\|non-empty-list<string>>
124		*/
125	10	private function extractParametersFromTokens(array $tokens): array
126		{
127	10	$parameters = $this->splitTokensAsParams($tokens);
128
129	10	if (!isset($parameters['id'])) {
130	6	$this->skippedLines[] = $tokens;
131	6	return [];
132		}
133
134	7	$messages = [$parameters['category'] ?? $this->defaultCategory => [$parameters['id']]];
135
136		// Get translation messages from parameters
137	7	if (isset($parameters['parameters'])) {
138	5	$messages = array_merge_recursive($messages, $this->extractMessagesFromTokens($parameters['parameters']));
139		}
140
141	7	return $messages;
142		}
143
144		/**
145		* @psalm-param array<string\|array{0: int, 1: string, 2: int}> $tokens
146		*
147		* @psalm-return array{category?: null\|string, id?: null\|string, parameters?: null\|list<array{0: int, 1: string, 2: int}\|string>}
148		*/
149	10	private function splitTokensAsParams(array $tokens): array
150		{
151	10	$parameters = [];
152	10	$parameterIndex = 0;
153	10	$commaStack = [];
154
155	10	foreach ($tokens as $token) {
156	10	if (empty($commaStack) && $token === ',') {
157	8	$parameterIndex++;
158	8	continue;
159		}
160	10	if (is_string($token)) {
161	8	if (in_array($token, self::$commaSpare)) {
162	8	$commaStack[] = $token;
163	8	} elseif (isset(self::$commaSpare[$token]) && array_pop($commaStack) !== self::$commaSpare[$token]) {
164		return [];
165		}
166		}
167	10	$parameters[$parameterIndex][] = $token;
168		}
169
170		return [
171	10	'id' => $this->getMessageStringFromTokens($parameters[0] ?? []),
172	10	'parameters' => $parameters[1] ?? null,
173	10	'category' => $this->getMessageStringFromTokens($parameters[2] ?? []),
174		];
175		}
176
177		/**
178		* @psalm-param array<string\|array{0: int, 1: string, 2: int}> $tokens
179		*
180		* @return string\|null
181		*/
182	10	private function getMessageStringFromTokens(array $tokens): ?string
183		{
184	10	if (empty($tokens) \|\| $tokens[0][0] !== T_CONSTANT_ENCAPSED_STRING) {
185	9	return null;
186		}
187
188	10	$fullMessage = substr($tokens[0][1], 1, -1);
189
190	10	$i = 1;
191	10	$countTokens = count($tokens);
192	10	while ($i < $countTokens && $tokens[$i] === '.') {
193	8	if ($tokens[$i + 1][0] === T_CONSTANT_ENCAPSED_STRING) {
194	8	$fullMessage .= substr($tokens[$i + 1][1], 1, -1);
195	6	} elseif (in_array($tokens[$i + 1][0], [T_LNUMBER, T_DNUMBER])) {
196	6	$fullMessage .= $tokens[$i + 1][1];
197		} else {
198	4	return null;
199		}
200
201	8	$i += 2;
202		}
203
204	7	return stripcslashes($fullMessage);
205		}
206
207		/**
208		* Finds out if two PHP tokens are equal.
209		*
210		* @param array{0: int, 1: string, 2: int}\|string $a
211		* @param array{0: int, 1: string, 2: int}\|string $b
212		*
213		* @return bool
214		*/
215	10	private function tokensEqual($a, $b): bool
216		{
217	10	if (is_string($a)) {
218	10	return $a === $b;
219		}
220
221	10	return $a[0] === $b[0] && $a[1] == $b[1];
222		}
223
224	1	public function getDefaultCategory(): string
225		{
226	1	return $this->defaultCategory;
227		}
228
229	2	public function setDefaultCategory(string $defaultCategory): void
230		{
231	2	$this->defaultCategory = $defaultCategory;
232	2	}
233
234	10	public function hasSkippedLines(): bool
235		{
236	10	return !empty($this->skippedLines);
237		}
238
239		/**
240		* @psalm-return array<array<string\|array{0: int, 1: string, 2: int}>>
241		*/
242	7	public function getSkippedLines(): array
243		{
244	7	return $this->skippedLines;
245		}
246		}
247

yiisoft / translator

Pull Request — master (#41)

ContentParser::getMessageStringFromTokens() B

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