13883317705

Committed 16 Mar 2025 12:26PM UTC coverage: 56.019% (+0.2%) from 55.84%

Build # 13883317705

Build Type

Pull #1173

github

Committed by

web-flow

Commit Message

Merge 919581524 into b561b72a0

Pull Request Pull Request #1173: [CLEANUP] Clean up `ParserState` a bit

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0.0

/src/Parsing/ParserState.php

<?php

declare(strict_types=1);

namespace Sabberworm\CSS\Parsing;

use Sabberworm\CSS\Comment\Comment;
use Sabberworm\CSS\Settings;

/**
 * @internal since 8.7.0
 */
class ParserState
{
    /**
     * @var null
     */
    public const EOF = null;

    /**
     * @var Settings
     */
    private $parserSettings;

    /**
     * @var string
     */
    private $text;

    /**
     * @var array<int, string>
     */
    private $characters;

    /**
     * @var int<0, max>
     */
    private $currentPosition = 0;

    /**
     * will only be used if the CSS does not contain an `@charset` declaration
     *
     * @var string
     */
    private $charset;

    /**
     * @var int<1, max> $lineNumber
     */
    private $lineNumber;

    /**
     * @param string $text the complete CSS as text (i.e., usually the contents of a CSS file)
     * @param int<1, max> $lineNumber
     */
    public function __construct(string $text, Settings $parserSettings, int $lineNumber = 1)
    {
        $this->parserSettings = $parserSettings;
        $this->text = $text;
        $this->lineNumber = $lineNumber;
        $this->setCharset($this->parserSettings->getDefaultCharset());
    }

    /**
     * Sets the charset to be used if the CSS does not contain an `@charset` declaration.
     *
     * @throws SourceException if the charset is UTF-8 and the content has invalid byte sequences
     */
    public function setCharset(string $charset): void
    {
        $this->charset = $charset;
        $this->characters = $this->strsplit($this->text);
    }

    /**
     * @return int<1, max>
     */
    public function currentLine(): int
    {
        return $this->lineNumber;
    }

    /**
     * @return int<0, max>
     */
    public function currentColumn(): int
    {
        return $this->currentPosition;
    }

    public function getSettings(): Settings
    {
        return $this->parserSettings;
    }

    public function anchor(): Anchor
    {
        return new Anchor($this->currentPosition, $this);
    }

    /**
     * @param int<0, max> $position
     */
    public function setPosition(int $position): void
    {
        $this->currentPosition = $position;
    }

    /**
     * @throws UnexpectedTokenException
     */
    public function parseIdentifier(bool $ignoreCase = true): string
    {
        if ($this->isEnd()) {
            throw new UnexpectedEOFException('', '', 'identifier', $this->lineNumber);
        }
        $result = $this->parseCharacter(true);
        if ($result === null) {
            throw new UnexpectedTokenException('', $this->peek(5), 'identifier', $this->lineNumber);
        }
        $character = null;
        while (!$this->isEnd() && ($character = $this->parseCharacter(true)) !== null) {
            if (\preg_match('/[a-zA-Z0-9\\x{00A0}-\\x{FFFF}_-]/Sux', $character)) {
                $result .= $character;
            } else {
                $result .= '\\' . $character;
            }
        }
        if ($ignoreCase) {
            $result = $this->strtolower($result);
        }

        return $result;
    }

    /**
     * @throws UnexpectedEOFException
     * @throws UnexpectedTokenException
     */
    public function parseCharacter(bool $isForIdentifier): ?string
    {
        if ($this->peek() === '\\') {
            $this->consume('\\');
            if ($this->comes('\\n') || $this->comes('\\r')) {
                return '';
            }
            if (\preg_match('/[0-9a-fA-F]/Su', $this->peek()) === 0) {
                return $this->consume(1);
            }
            $hexCodePoint = $this->consumeExpression('/^[0-9a-fA-F]{1,6}/u', 6);
            if ($this->strlen($hexCodePoint) < 6) {
                // Consume whitespace after incomplete unicode escape
                if (\preg_match('/\\s/isSu', $this->peek())) {
                    if ($this->comes('\\r\\n')) {
                        $this->consume(2);
                    } else {
                        $this->consume(1);
                    }
                }
            }
            $codePoint = \intval($hexCodePoint, 16);
            $utf32EncodedCharacter = '';
            for ($i = 0; $i < 4; ++$i) {
                $utf32EncodedCharacter .= \chr($codePoint & 0xff);
                $codePoint = $codePoint >> 8;
            }
            return \iconv('utf-32le', $this->charset, $utf32EncodedCharacter);
        }
        if ($isForIdentifier) {
            $peek = \ord($this->peek());
            // Ranges: a-z A-Z 0-9 - _
            if (
                ($peek >= 97 && $peek <= 122)
                || ($peek >= 65 && $peek <= 90)
                || ($peek >= 48 && $peek <= 57)
                || ($peek === 45)
                || ($peek === 95)
                || ($peek > 0xa1)
            ) {
                return $this->consume(1);
            }
        } else {
            return $this->consume(1);
        }

        return null;
    }

    /**
     * @return list<Comment>
     *
     * @throws UnexpectedEOFException
     * @throws UnexpectedTokenException
     */
    public function consumeWhiteSpace(): array
    {
        $comments = [];
        do {
            while (\preg_match('/\\s/isSu', $this->peek()) === 1) {
                $this->consume(1);
            }
            if ($this->parserSettings->usesLenientParsing()) {
                try {
                    $comment = $this->consumeComment();
                } catch (UnexpectedEOFException $e) {
                    $this->currentPosition = \count($this->characters);
                    return $comments;
                }
            } else {
                $comment = $this->consumeComment();
            }
            if ($comment !== false) {
                $comments[] = $comment;
            }
        } while ($comment !== false);

        return $comments;
    }

    /**
     * @param non-empty-string $string
     */
    public function comes(string $string, bool $caseInsensitive = false): bool
    {
        $peek = $this->peek(\strlen($string));

        return ($peek !== '') && $this->streql($peek, $string, $caseInsensitive);
    }

    /**
     * @param int<1, max> $length
     * @param int<0, max> $offset
     */
    public function peek(int $length = 1, int $offset = 0): string
    {
        $offset += $this->currentPosition;
        if ($offset >= \count($this->characters)) {
            return '';
        }

        return $this->substr($offset, $length);
    }

    /**
     * @param string|int<1, max> $value
     *
     * @throws UnexpectedEOFException
     * @throws UnexpectedTokenException
     */
    public function consume($value = 1): string
    {
        if (\is_string($value)) {
            $numberOfLines = \substr_count($value, "\n");
            $length = $this->strlen($value);
            if (!$this->streql($this->substr($this->currentPosition, $length), $value)) {
                throw new UnexpectedTokenException(
                    $value,
                    $this->peek(\max($length, 5)),
                    'literal',
                    $this->lineNumber
                );
            }

            $this->lineNumber += $numberOfLines;
            $this->currentPosition += $this->strlen($value);
            $result = $value;
        } else {
            if ($this->currentPosition + $value > \count($this->characters)) {
                throw new UnexpectedEOFException((string) $value, $this->peek(5), 'count', $this->lineNumber);
            }

            $result = $this->substr($this->currentPosition, $value);
            $numberOfLines = \substr_count($result, "\n");
            $this->lineNumber += $numberOfLines;
            $this->currentPosition += $value;
        }

        return $result;
    }

    /**
     * @param string $expression
     * @param int<1, max>|null $maximumLength
     *
     * @throws UnexpectedEOFException
     * @throws UnexpectedTokenException
     */
    public function consumeExpression(string $expression, ?int $maximumLength = null): string
    {
        $matches = null;
        $input = ($maximumLength !== null) ? $this->peek($maximumLength) : $this->inputLeft();
        if (\preg_match($expression, $input, $matches, PREG_OFFSET_CAPTURE) !== 1) {
            throw new UnexpectedTokenException($expression, $this->peek(5), 'expression', $this->lineNumber);
        }

        return $this->consume($matches[0][0]);
    }

    /**
     * @return Comment|false
     */
    public function consumeComment()
    {
        $comment = false;
        if ($this->comes('/*')) {
            $lineNumber = $this->lineNumber;
            $this->consume(1);
            $comment = '';
            while (($char = $this->consume(1)) !== '') {
                $comment .= $char;
                if ($this->comes('*/')) {
                    $this->consume(2);
                    break;
                }
            }
        }

        // We skip the * which was included in the comment.
        return ($comment !== false) ? new Comment(\substr($comment, 1), $lineNumber) : false;
    }

    public function isEnd(): bool
    {
        return $this->currentPosition >= \count($this->characters);
    }

    /**
     * @param list<string>|string $stopCharacters
     * @param array<int, Comment> $comments
     *
     * @throws UnexpectedEOFException
     * @throws UnexpectedTokenException
     */
    public function consumeUntil(
        $stopCharacters,
        bool $includeEnd = false,
        bool $consumeEnd = false,
        array &$comments = []
    ): string {
        $stopCharacters = \is_array($stopCharacters) ? $stopCharacters : [$stopCharacters];
        $consumedCharacters = '';
        $start = $this->currentPosition;

        while (!$this->isEnd()) {
            $character = $this->consume(1);
            if (\in_array($character, $stopCharacters, true)) {
                if ($includeEnd) {
                    $consumedCharacters .= $character;
                } elseif (!$consumeEnd) {
                    $this->currentPosition -= $this->strlen($character);
                }
                return $consumedCharacters;
            }
            $consumedCharacters .= $character;
            $comment = $this->consumeComment();
            if ($comment instanceof Comment) {
                $comments[] = $comment;
            }
        }

        if (\in_array(self::EOF, $stopCharacters, true)) {
            return $consumedCharacters;
        }

        $this->currentPosition = $start;
        throw new UnexpectedEOFException(
            'One of ("' . \implode('","', $stopCharacters) . '")',
            $this->peek(5),
            'search',
            $this->lineNumber
        );
    }

    private function inputLeft(): string
    {
        return $this->substr($this->currentPosition, -1);
    }

    public function streql(string $string1, string $string2, bool $caseInsensitive = true): bool
    {
        return $caseInsensitive
            ? ($this->strtolower($string1) === $this->strtolower($string2))
            : ($string1 === $string2);
    }

    /**
     * @param int<1, max> $numberOfCharacters
     */
    public function backtrack(int $numberOfCharacters): void
    {
        $this->currentPosition -= $numberOfCharacters;
    }

    /**
     * @return int<0, max>
     */
    public function strlen(string $string): int
    {
        return $this->parserSettings->hasMultibyteSupport()
            ? \mb_strlen($string, $this->charset)
            : \strlen($string);
    }

    /**
     * @param int<0, max> $offset
     */
    private function substr(int $offset, int $length): string
    {
        if ($length < 0) {
            $length = \count($this->characters) - $offset + $length;
        }
        if ($offset + $length > \count($this->characters)) {
            $length = \count($this->characters) - $offset;
        }
        $result = '';
        while ($length > 0) {
            $result .= $this->characters[$offset];
            $offset++;
            $length--;
        }

        return $result;
    }

    /**
     * @return ($string is non-empty-string ? non-empty-string : string)
     */
    private function strtolower(string $string): string
    {
        return $this->parserSettings->hasMultibyteSupport()
            ? \mb_strtolower($string, $this->charset)
            : \strtolower($string);
    }

    /**
     * @return list<string>
     *
     * @throws SourceException if the charset is UTF-8 and the string contains invalid byte sequences
     */
    private function strsplit(string $string): array
    {
        if ($this->parserSettings->hasMultibyteSupport()) {
            if ($this->streql($this->charset, 'utf-8')) {
                $result = \preg_split('//u', $string, -1, PREG_SPLIT_NO_EMPTY);
                if (!\is_array($result)) {
                    throw new SourceException('`preg_split` failed with error ' . \preg_last_error());
                }
            } else {
                $length = \mb_strlen($string, $this->charset);
                $result = [];
                for ($i = 0; $i < $length; ++$i) {
                    $result[] = \mb_substr($string, $i, 1, $this->charset);
                }
            }
        } else {
            return ($string !== '') ? \str_split($string) : [];
        }

        return $result;
    }

    /**
     * @return int<0, max>|false
     */
    private function strpos(string $haystack, string $needle, int $offset)
    {
        return $this->parserSettings->hasMultibyteSupport()
            ? \mb_strpos($haystack, $needle, $offset, $this->charset)
            : \strpos($haystack, $needle, $offset);
    }
}

1	<?php
2
3	declare(strict_types=1);
4
5	namespace Sabberworm\CSS\Parsing;
6
7	use Sabberworm\CSS\Comment\Comment;
8	use Sabberworm\CSS\Settings;
9
10	/**
11	* @internal since 8.7.0
12	*/
13	class ParserState
14	{
15	/**
16	* @var null
17	*/
18	public const EOF = null;
19
20	/**
21	* @var Settings
22	*/
23	private $parserSettings;
24
25	/**
26	* @var string
27	*/
28	private $text;
29
30	/**
31	* @var array<int, string>
32	*/
33	private $characters;
34
35	/**
36	* @var int<0, max>
37	*/
38	private $currentPosition = 0;
39
40	/**
41	* will only be used if the CSS does not contain an `@charset` declaration
42	*
43	* @var string
44	*/
45	private $charset;
46
47	/**
48	* @var int<1, max> $lineNumber
49	*/
50	private $lineNumber;
51
52	/**
53	* @param string $text the complete CSS as text (i.e., usually the contents of a CSS file)
54	* @param int<1, max> $lineNumber
55	*/
56	public function __construct(string $text, Settings $parserSettings, int $lineNumber = 1)	×
57	{
58	$this->parserSettings = $parserSettings;	×
59	$this->text = $text;	×
60	$this->lineNumber = $lineNumber;	×
61	$this->setCharset($this->parserSettings->getDefaultCharset());	×
62	}	×
63
64	/**
65	* Sets the charset to be used if the CSS does not contain an `@charset` declaration.
66	*
67	* @throws SourceException if the charset is UTF-8 and the content has invalid byte sequences
68	*/
69	public function setCharset(string $charset): void	×
70	{
71	$this->charset = $charset;	×
72	$this->characters = $this->strsplit($this->text);	×
73	}	×
74
75	/**
76	* @return int<1, max>
77	*/
78	public function currentLine(): int	×
79	{
80	return $this->lineNumber;	×
81	}
82
83	/**
84	* @return int<0, max>
85	*/
86	public function currentColumn(): int	×
87	{
88	return $this->currentPosition;	×
89	}
90
91	public function getSettings(): Settings	×
92	{
93	return $this->parserSettings;	×
94	}
95
96	public function anchor(): Anchor	×
97	{
98	return new Anchor($this->currentPosition, $this);	×
99	}
100
101	/**
102	* @param int<0, max> $position
103	*/
104	public function setPosition(int $position): void	×
105	{
106	$this->currentPosition = $position;	×
107	}	×
108
109	/**
110	* @throws UnexpectedTokenException
111	*/
112	public function parseIdentifier(bool $ignoreCase = true): string	×
113	{
114	if ($this->isEnd()) {	×
115	throw new UnexpectedEOFException('', '', 'identifier', $this->lineNumber);	×
116	}
117	$result = $this->parseCharacter(true);	×
118	if ($result === null) {	×
119	throw new UnexpectedTokenException('', $this->peek(5), 'identifier', $this->lineNumber);	×
120	}
121	$character = null;	×
122	while (!$this->isEnd() && ($character = $this->parseCharacter(true)) !== null) {	×
123	if (\preg_match('/[a-zA-Z0-9\\x{00A0}-\\x{FFFF}_-]/Sux', $character)) {	×
124	$result .= $character;	×
125	} else {
126	$result .= '\\' . $character;	×
127	}
128	}
129	if ($ignoreCase) {	×
130	$result = $this->strtolower($result);	×
131	}
132
UNCOV 133	return $result;	×
134	}
135
136	/**
137	* @throws UnexpectedEOFException
138	* @throws UnexpectedTokenException
139	*/
140	public function parseCharacter(bool $isForIdentifier): ?string	×
141	{
142	if ($this->peek() === '\\') {	×
143	$this->consume('\\');	×
144	if ($this->comes('\\n') \|\| $this->comes('\\r')) {	×
145	return '';	×
146	}
147	if (\preg_match('/[0-9a-fA-F]/Su', $this->peek()) === 0) {	×
148	return $this->consume(1);	×
149	}
150	$hexCodePoint = $this->consumeExpression('/^[0-9a-fA-F]{1,6}/u', 6);	×
151	if ($this->strlen($hexCodePoint) < 6) {	×
152	// Consume whitespace after incomplete unicode escape
153	if (\preg_match('/\\s/isSu', $this->peek())) {	×
154	if ($this->comes('\\r\\n')) {	×
155	$this->consume(2);	×
156	} else {
157	$this->consume(1);	×
158	}
159	}
160	}
161	$codePoint = \intval($hexCodePoint, 16);	×
162	$utf32EncodedCharacter = '';	×
163	for ($i = 0; $i < 4; ++$i) {	×
164	$utf32EncodedCharacter .= \chr($codePoint & 0xff);	×
165	$codePoint = $codePoint >> 8;	×
166	}
167	return \iconv('utf-32le', $this->charset, $utf32EncodedCharacter);	×
168	}
169	if ($isForIdentifier) {	×
170	$peek = \ord($this->peek());	×
171	// Ranges: a-z A-Z 0-9 - _
172	if (
173	($peek >= 97 && $peek <= 122)	×
174	\|\| ($peek >= 65 && $peek <= 90)	×
175	\|\| ($peek >= 48 && $peek <= 57)	×
176	\|\| ($peek === 45)	×
177	\|\| ($peek === 95)	×
178	\|\| ($peek > 0xa1)	×
179	) {
180	return $this->consume(1);	×
181	}
182	} else {
183	return $this->consume(1);	×
184	}
185
UNCOV 186	return null;	×
187	}
188
189	/**
190	* @return list<Comment>
191	*
192	* @throws UnexpectedEOFException
193	* @throws UnexpectedTokenException
194	*/
195	public function consumeWhiteSpace(): array	×
196	{
197	$comments = [];	×
198	do {
199	while (\preg_match('/\\s/isSu', $this->peek()) === 1) {	×
200	$this->consume(1);	×
201	}
202	if ($this->parserSettings->usesLenientParsing()) {	×
203	try {
204	$comment = $this->consumeComment();	×
205	} catch (UnexpectedEOFException $e) {	×
206	$this->currentPosition = \count($this->characters);	×
207	return $comments;	×
208	}
209	} else {
210	$comment = $this->consumeComment();	×
211	}
212	if ($comment !== false) {	×
213	$comments[] = $comment;	×
214	}
215	} while ($comment !== false);	×
216
UNCOV 217	return $comments;	×
218	}
219
220	/**
221	* @param non-empty-string $string
222	*/
UNCOV 223	public function comes(string $string, bool $caseInsensitive = false): bool	×
224	{
225	$peek = $this->peek(\strlen($string));	×
226
NEW 227	return ($peek !== '') && $this->streql($peek, $string, $caseInsensitive);	×
228	}
229
230	/**
231	* @param int<1, max> $length
232	* @param int<0, max> $offset
233	*/
234	public function peek(int $length = 1, int $offset = 0): string	×
235	{
236	$offset += $this->currentPosition;	×
237	if ($offset >= \count($this->characters)) {	×
238	return '';	×
239	}
240
UNCOV 241	return $this->substr($offset, $length);	×
242	}
243
244	/**
245	* @param string\|int<1, max> $value
246	*
247	* @throws UnexpectedEOFException
248	* @throws UnexpectedTokenException
249	*/
250	public function consume($value = 1): string	×
251	{
252	if (\is_string($value)) {	×
253	$numberOfLines = \substr_count($value, "\n");	×
254	$length = $this->strlen($value);	×
255	if (!$this->streql($this->substr($this->currentPosition, $length), $value)) {	×
256	throw new UnexpectedTokenException(	×
257	$value,	×
258	$this->peek(\max($length, 5)),	×
259	'literal',	×
260	$this->lineNumber	×
261	);
262	}
263
264	$this->lineNumber += $numberOfLines;	×
265	$this->currentPosition += $this->strlen($value);	×
NEW 266	$result = $value;	×
267	} else {
268	if ($this->currentPosition + $value > \count($this->characters)) {	×
269	throw new UnexpectedEOFException((string) $value, $this->peek(5), 'count', $this->lineNumber);	×
270	}
271
272	$result = $this->substr($this->currentPosition, $value);	×
273	$numberOfLines = \substr_count($result, "\n");	×
274	$this->lineNumber += $numberOfLines;	×
275	$this->currentPosition += $value;	×
276	}
277
NEW 278	return $result;	×
279	}
280
281	/**
282	* @param string $expression
283	* @param int<1, max>\|null $maximumLength
284	*
285	* @throws UnexpectedEOFException
286	* @throws UnexpectedTokenException
287	*/
288	public function consumeExpression(string $expression, ?int $maximumLength = null): string	×
289	{
290	$matches = null;	×
NEW 291	$input = ($maximumLength !== null) ? $this->peek($maximumLength) : $this->inputLeft();	×
NEW 292	if (\preg_match($expression, $input, $matches, PREG_OFFSET_CAPTURE) !== 1) {	×
NEW 293	throw new UnexpectedTokenException($expression, $this->peek(5), 'expression', $this->lineNumber);	×
294	}
295
NEW 296	return $this->consume($matches[0][0]);	×
297	}
298
299	/**
300	* @return Comment\|false
301	*/
302	public function consumeComment()	×
303	{
304	$comment = false;	×
305	if ($this->comes('/*')) {	×
306	$lineNumber = $this->lineNumber;	×
307	$this->consume(1);	×
308	$comment = '';	×
309	while (($char = $this->consume(1)) !== '') {	×
310	$comment .= $char;	×
311	if ($this->comes('*/')) {	×
312	$this->consume(2);	×
313	break;	×
314	}
315	}
316	}
317
318	// We skip the * which was included in the comment.
NEW 319	return ($comment !== false) ? new Comment(\substr($comment, 1), $lineNumber) : false;	×
320	}
321
322	public function isEnd(): bool	×
323	{
324	return $this->currentPosition >= \count($this->characters);	×
325	}
326
327	/**
328	* @param list<string>\|string $stopCharacters
329	* @param array<int, Comment> $comments
330	*
331	* @throws UnexpectedEOFException
332	* @throws UnexpectedTokenException
333	*/
334	public function consumeUntil(	×
335	$stopCharacters,
336	bool $includeEnd = false,
337	bool $consumeEnd = false,
338	array &$comments = []
339	): string {
340	$stopCharacters = \is_array($stopCharacters) ? $stopCharacters : [$stopCharacters];	×
341	$consumedCharacters = '';	×
342	$start = $this->currentPosition;	×
343
344	while (!$this->isEnd()) {	×
345	$character = $this->consume(1);	×
346	if (\in_array($character, $stopCharacters, true)) {	×
347	if ($includeEnd) {	×
348	$consumedCharacters .= $character;	×
349	} elseif (!$consumeEnd) {	×
350	$this->currentPosition -= $this->strlen($character);	×
351	}
352	return $consumedCharacters;	×
353	}
354	$consumedCharacters .= $character;	×
NEW 355	$comment = $this->consumeComment();	×
NEW 356	if ($comment instanceof Comment) {	×
UNCOV 357	$comments[] = $comment;	×
358	}
359	}
360
361	if (\in_array(self::EOF, $stopCharacters, true)) {	×
362	return $consumedCharacters;	×
363	}
364
365	$this->currentPosition = $start;	×
366	throw new UnexpectedEOFException(	×
367	'One of ("' . \implode('","', $stopCharacters) . '")',	×
368	$this->peek(5),	×
369	'search',	×
370	$this->lineNumber	×
371	);
372	}
373
374	private function inputLeft(): string	×
375	{
376	return $this->substr($this->currentPosition, -1);	×
377	}
378
379	public function streql(string $string1, string $string2, bool $caseInsensitive = true): bool	×
380	{
NEW 381	return $caseInsensitive	×
NEW 382	? ($this->strtolower($string1) === $this->strtolower($string2))	×
NEW 383	: ($string1 === $string2);	×
384	}
385
386	/**
387	* @param int<1, max> $numberOfCharacters
388	*/
389	public function backtrack(int $numberOfCharacters): void	×
390	{
391	$this->currentPosition -= $numberOfCharacters;	×
392	}	×
393
394	/**
395	* @return int<0, max>
396	*/
397	public function strlen(string $string): int	×
398	{
NEW 399	return $this->parserSettings->hasMultibyteSupport()	×
NEW 400	? \mb_strlen($string, $this->charset)	×
NEW 401	: \strlen($string);	×
402	}
403
404	/**
405	* @param int<0, max> $offset
406	*/
407	private function substr(int $offset, int $length): string	×
408	{
409	if ($length < 0) {	×
410	$length = \count($this->characters) - $offset + $length;	×
411	}
412	if ($offset + $length > \count($this->characters)) {	×
413	$length = \count($this->characters) - $offset;	×
414	}
415	$result = '';	×
416	while ($length > 0) {	×
417	$result .= $this->characters[$offset];	×
418	$offset++;	×
419	$length--;	×
420	}
421
UNCOV 422	return $result;	×
423	}
424
425	/**
426	* @return ($string is non-empty-string ? non-empty-string : string)
427	*/
UNCOV 428	private function strtolower(string $string): string	×
429	{
NEW 430	return $this->parserSettings->hasMultibyteSupport()	×
NEW 431	? \mb_strtolower($string, $this->charset)	×
NEW 432	: \strtolower($string);	×
433	}
434
435	/**
436	* @return list<string>
437	*
438	* @throws SourceException if the charset is UTF-8 and the string contains invalid byte sequences
439	*/
440	private function strsplit(string $string): array	×
441	{
442	if ($this->parserSettings->hasMultibyteSupport()) {	×
443	if ($this->streql($this->charset, 'utf-8')) {	×
444	$result = \preg_split('//u', $string, -1, PREG_SPLIT_NO_EMPTY);	×
445	if (!\is_array($result)) {	×
446	throw new SourceException('`preg_split` failed with error ' . \preg_last_error());	×
447	}
448	} else {
UNCOV 449	$length = \mb_strlen($string, $this->charset);	×
450	$result = [];	×
451	for ($i = 0; $i < $length; ++$i) {	×
452	$result[] = \mb_substr($string, $i, 1, $this->charset);	×
453	}
454	}
455	} else {
NEW 456	return ($string !== '') ? \str_split($string) : [];	×
457	}
458
NEW 459	return $result;	×
460	}
461
462	/**
463	* @return int<0, max>\|false
464	*/
465	private function strpos(string $haystack, string $needle, int $offset)	×
466	{
NEW 467	return $this->parserSettings->hasMultibyteSupport()	×
NEW 468	? \mb_strpos($haystack, $needle, $offset, $this->charset)	×
NEW 469	: \strpos($haystack, $needle, $offset);	×
470	}
471	}

MyIntervals / PHP-CSS-Parser / 13883317705

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