Subversion-Projekte lars-tiefland.laravel_shop

<?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;

    }

}