File Ast/ConstExpr/ConstExprStringNode.php

1:	<?php declare(strict_types = 1);
2:
3:	namespace PHPStan\PhpDocParser\Ast\ConstExpr;
4:
5:	use PHPStan\PhpDocParser\Ast\NodeAttributes;
6:	use function addcslashes;
7:	use function assert;
8:	use function dechex;
9:	use function ord;
10:	use function preg_replace_callback;
11:	use function sprintf;
12:	use function str_pad;
13:	use function strlen;
14:	use const STR_PAD_LEFT;
15:
16:	class ConstExprStringNode implements ConstExprNode
17:	{
18:
19:	public const SINGLE_QUOTED = 1;
20:	public const DOUBLE_QUOTED = 2;
21:
22:	use NodeAttributes;
23:
24:	public string $value;
25:
26:	/** @var self::SINGLE_QUOTED\|self::DOUBLE_QUOTED */
27:	public $quoteType;
28:
29:	/**
30:	* @param self::SINGLE_QUOTED\|self::DOUBLE_QUOTED $quoteType
31:	*/
32:	public function __construct(string $value, int $quoteType)
33:	{
34:	$this->value = $value;
35:	$this->quoteType = $quoteType;
36:	}
37:
38:
39:	public function __toString(): string
40:	{
41:	if ($this->quoteType === self::SINGLE_QUOTED) {
42:	// from https://github.com/nikic/PHP-Parser/blob/0ffddce52d816f72d0efc4d9b02e276d3309ef01/lib/PhpParser/PrettyPrinter/Standard.php#L1007
43:	return sprintf("'%s'", addcslashes($this->value, '\'\\'));
44:	}
45:
46:	// from https://github.com/nikic/PHP-Parser/blob/0ffddce52d816f72d0efc4d9b02e276d3309ef01/lib/PhpParser/PrettyPrinter/Standard.php#L1010-L1040
47:	return sprintf('"%s"', $this->escapeDoubleQuotedString());
48:	}
49:
50:	private function escapeDoubleQuotedString(): string
51:	{
52:	$quote = '"';
53:	$escaped = addcslashes($this->value, "\n\r\t\f\v$" . $quote . '\\');
54:
55:	// Escape control characters and non-UTF-8 characters.
56:	// Regex based on https://stackoverflow.com/a/11709412/385378.
57:	$regex = '/(
58:	[\x00-\x08\x0E-\x1F] # Control characters
59:	\| [\xC0-\xC1] # Invalid UTF-8 Bytes
60:	\| [\xF5-\xFF] # Invalid UTF-8 Bytes
61:	\| \xE0(?=[\x80-\x9F]) # Overlong encoding of prior code point
62:	\| \xF0(?=[\x80-\x8F]) # Overlong encoding of prior code point
63:	\| [\xC2-\xDF](?![\x80-\xBF]) # Invalid UTF-8 Sequence Start
64:	\| [\xE0-\xEF](?![\x80-\xBF]{2}) # Invalid UTF-8 Sequence Start
65:	\| [\xF0-\xF4](?![\x80-\xBF]{3}) # Invalid UTF-8 Sequence Start
66:	\| (?<=[\x00-\x7F\xF5-\xFF])[\x80-\xBF] # Invalid UTF-8 Sequence Middle
67:	\| (?<![\xC2-\xDF]\|[\xE0-\xEF]\|[\xE0-\xEF][\x80-\xBF]\|[\xF0-\xF4]\|[\xF0-\xF4][\x80-\xBF]\|[\xF0-\xF4][\x80-\xBF]{2})[\x80-\xBF] # Overlong Sequence
68:	\| (?<=[\xE0-\xEF])[\x80-\xBF](?![\x80-\xBF]) # Short 3 byte sequence
69:	\| (?<=[\xF0-\xF4])[\x80-\xBF](?![\x80-\xBF]{2}) # Short 4 byte sequence
70:	\| (?<=[\xF0-\xF4][\x80-\xBF])[\x80-\xBF](?![\x80-\xBF]) # Short 4 byte sequence (2)
71:	)/x';
72:	return preg_replace_callback($regex, static function ($matches) {
73:	assert(strlen($matches[0]) === 1);
74:	$hex = dechex(ord($matches[0]));
75:
76:	return '\\x' . str_pad($hex, 2, '0', STR_PAD_LEFT);
77:	}, $escaped);
78:	}
79:
80:	}
81:

Namespaces

Classes

Interfaces