← All changes | vendor/symfony/css-selector/Parser/Reader.php +11 -10 4.4.2 → 4.4.8 View file →

		@@ -22,15 +22,16 @@
22	22	* @internal
23	23	*/
24	24	class Reader
25	25	{
26		- private string $source;
	26	+ private static array $anchoredPatterns = [];
	27	+
27	28	private int $length;
28	29	private int $position = 0;
29	30
30		- public function __construct(string $source)
31		- {
32		- $this->source = $source;
	31	+ public function __construct(
	32	+ private string $source,
	33	+ ) {
33	34	$this->length = \strlen($source);
34	35	}
35	36
36	37	public function isEOF(): bool
		@@ -52,12 +53,9 @@
52	53	{
53	54	return substr($this->source, $this->position + $offset, $length);
54	55	}
55	56
56		- /**
57		- * @return int|false
58		- */
59		- public function getOffset(string $string): int|bool
	57	+ public function getOffset(string $string): int|false
60	58	{
61	59	$position = strpos($this->source, $string, $this->position);
62	60
63	61	return false === $position ? false : $position - $this->position;
		@@ -64,11 +62,14 @@
64	62	}
65	63
66	64	public function findPattern(string $pattern): array|false
67	65	{
68		- $source = substr($this->source, $this->position);
	66	+ // Match in place instead of copying the remaining source before every probe.
	67	+ // Combined with an offset, "^" still anchors at the start of the whole subject,
	68	+ // so a leading anchor is turned into "\\G", which anchors at the offset instead.
	69	+ $pattern = self::$anchoredPatterns[$pattern] ??= '^' === ($pattern[1] ?? '') ? $pattern[0].'\\G'.substr($pattern, 2) : $pattern;
69	70
70		- if (preg_match($pattern, $source, $matches)) {
	71	+ if (preg_match($pattern, $this->source, $matches, 0, $this->position)) {
71	72	return $matches;
72	73	}
73	74
74	75	return false;