\h*)\2(?![a-zA-Z0-9_\x80-\xff])(?(?:;?[\r\n])?)/x REGEX; public function getPhpVersion(): string { return Emulative::PHP_7_3; } public function isEmulationNeeded(string $code) : bool { return strpos($code, '<<<') !== false; } public function emulate(string $code, array $tokens): array { // Handled by preprocessing + fixup. return $tokens; } public function reverseEmulate(string $code, array $tokens): array { // Not supported. return $tokens; } public function preprocessCode(string $code, array &$patches): string { if (!preg_match_all(self::FLEXIBLE_DOC_STRING_REGEX, $code, $matches, PREG_SET_ORDER|PREG_OFFSET_CAPTURE)) { // No heredoc/nowdoc found return $code; } // Keep track of how much we need to adjust string offsets due to the modifications we // already made $posDelta = 0; foreach ($matches as $match) { $indentation = $match['indentation'][0]; $indentationStart = $match['indentation'][1]; $separator = $match['separator'][0]; $separatorStart = $match['separator'][1]; if ($indentation === '' && $separator !== '') { // Ordinary heredoc/nowdoc continue; } if ($indentation !== '') { // Remove indentation $indentationLen = strlen($indentation); $code = substr_replace($code, '', $indentationStart + $posDelta, $indentationLen); $patches[] = [$indentationStart + $posDelta, 'add', $indentation]; $posDelta -= $indentationLen; } if ($separator === '') { // Insert newline as separator $code = substr_replace($code, "\n", $separatorStart + $posDelta, 0); $patches[] = [$separatorStart + $posDelta, 'remove', "\n"]; $posDelta += 1; } } return $code; } }