php-parser/lib/PhpParser/Lexer/TokenEmulator/MatchTokenEmulator.php

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<?php declare(strict_types=1);
namespace PhpParser\Lexer\TokenEmulator;
use PhpParser\Lexer\Emulative;
final class MatchTokenEmulator implements TokenEmulatorInterface
{
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public function getPhpVersion(): string
{
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return Emulative::PHP_8_0;
}
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public function isEmulationNeeded(string $code): bool
{
return strpos($code, 'match') !== false;
}
public function emulate(string $code, array $tokens): array
{
foreach ($tokens as $i => $token) {
if ($token[0] === T_STRING && strtolower($token[1]) === 'match') {
$previousNonSpaceToken = $this->getPreviousNonSpaceToken($tokens, $i);
if ($previousNonSpaceToken !== null && $previousNonSpaceToken[0] === T_OBJECT_OPERATOR) {
continue;
}
$tokens[$i][0] = Emulative::T_MATCH;
}
}
return $tokens;
}
/**
* @param mixed[] $tokens
* @return mixed[]|null
*/
private function getPreviousNonSpaceToken(array $tokens, int $start)
{
for ($i = $start - 1; $i >= 0; --$i) {
if ($tokens[$i][0] === T_WHITESPACE) {
continue;
}
return $tokens[$i];
}
return null;
}
}