| 1: | <?php declare(strict_types=1); |
| 2: | |
| 3: | namespace PhpParser\Lexer\TokenEmulator; |
| 4: | |
| 5: | use PhpParser\Lexer\Emulative; |
| 6: | |
| 7: | final class FlexibleDocStringEmulator extends TokenEmulator |
| 8: | { |
| 9: | const FLEXIBLE_DOC_STRING_REGEX = <<<'REGEX' |
| 10: | /<<<[ \t]*(['"]?)([a-zA-Z_\x80-\xff][a-zA-Z0-9_\x80-\xff]*)\1\r?\n |
| 11: | (?:.*\r?\n)*? |
| 12: | (?<indentation>\h*)\2(?![a-zA-Z0-9_\x80-\xff])(?<separator>(?:;?[\r\n])?)/x |
| 13: | REGEX; |
| 14: | |
| 15: | public function getPhpVersion(): string |
| 16: | { |
| 17: | return Emulative::PHP_7_3; |
| 18: | } |
| 19: | |
| 20: | public function isEmulationNeeded(string $code) : bool |
| 21: | { |
| 22: | return strpos($code, '<<<') !== false; |
| 23: | } |
| 24: | |
| 25: | public function emulate(string $code, array $tokens): array |
| 26: | { |
| 27: | |
| 28: | return $tokens; |
| 29: | } |
| 30: | |
| 31: | public function reverseEmulate(string $code, array $tokens): array |
| 32: | { |
| 33: | |
| 34: | return $tokens; |
| 35: | } |
| 36: | |
| 37: | public function preprocessCode(string $code, array &$patches): string { |
| 38: | if (!preg_match_all(self::FLEXIBLE_DOC_STRING_REGEX, $code, $matches, PREG_SET_ORDER|PREG_OFFSET_CAPTURE)) { |
| 39: | |
| 40: | return $code; |
| 41: | } |
| 42: | |
| 43: | |
| 44: | |
| 45: | $posDelta = 0; |
| 46: | foreach ($matches as $match) { |
| 47: | $indentation = $match['indentation'][0]; |
| 48: | $indentationStart = $match['indentation'][1]; |
| 49: | |
| 50: | $separator = $match['separator'][0]; |
| 51: | $separatorStart = $match['separator'][1]; |
| 52: | |
| 53: | if ($indentation === '' && $separator !== '') { |
| 54: | |
| 55: | continue; |
| 56: | } |
| 57: | |
| 58: | if ($indentation !== '') { |
| 59: | |
| 60: | $indentationLen = strlen($indentation); |
| 61: | $code = substr_replace($code, '', $indentationStart + $posDelta, $indentationLen); |
| 62: | $patches[] = [$indentationStart + $posDelta, 'add', $indentation]; |
| 63: | $posDelta -= $indentationLen; |
| 64: | } |
| 65: | |
| 66: | if ($separator === '') { |
| 67: | |
| 68: | $code = substr_replace($code, "\n", $separatorStart + $posDelta, 0); |
| 69: | $patches[] = [$separatorStart + $posDelta, 'remove', "\n"]; |
| 70: | $posDelta += 1; |
| 71: | } |
| 72: | } |
| 73: | |
| 74: | return $code; |
| 75: | } |
| 76: | } |
| 77: | |