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<?php declare(strict_types=1);
namespace PhpParser\Lexer\TokenEmulator;
use PhpParser\Lexer\Emulative;
class ExplicitOctalEmulator extends TokenEmulator {
public function getPhpVersion(): string {
return Emulative::PHP_8_1;
}
public function isEmulationNeeded(string $code): bool {
return strpos($code, '0o') !== false || strpos($code, '0O') !== false;
}
public function emulate(string $code, array $tokens): array {
for ($i = 0, $c = count($tokens); $i < $c; ++$i) {
if ($tokens[$i][0] == \T_LNUMBER && $tokens[$i][1] === '0' &&
isset($tokens[$i + 1]) && $tokens[$i + 1][0] == \T_STRING &&
preg_match('/[oO][0-7]+(?:_[0-7]+)*/', $tokens[$i + 1][1])
) {
$tokenKind = $this->resolveIntegerOrFloatToken($tokens[$i + 1][1]);
array_splice($tokens, $i, 2, [
[$tokenKind, '0' . $tokens[$i + 1][1], $tokens[$i][2]],
]);
$c--;
}
}
return $tokens;
}
private function resolveIntegerOrFloatToken(string $str): int
{
$str = substr($str, 1);
$str = str_replace('_', '', $str);
$num = octdec($str);
return is_float($num) ? \T_DNUMBER : \T_LNUMBER;
}
public function reverseEmulate(string $code, array $tokens): array {
// Explicit octals were not legal code previously, don't bother.
return $tokens;
}
}
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