Файл: vendor/nikic/php-parser/lib/PhpParser/Lexer/TokenEmulator/NullsafeTokenEmulator.php
Строк: 78
<?php declare(strict_types=1);
namespace PhpParserLexerTokenEmulator;
use PhpParserLexerEmulative;
final class NullsafeTokenEmulator extends TokenEmulator
{
public function getPhpVersion(): string
{
return Emulative::PHP_8_0;
}
public function isEmulationNeeded(string $code): bool
{
return strpos($code, '?->') !== false;
}
public function emulate(string $code, array $tokens): array
{
// We need to manually iterate and manage a count because we'll change
// the tokens array on the way
$line = 1;
for ($i = 0, $c = count($tokens); $i < $c; ++$i) {
if ($tokens[$i] === '?' && isset($tokens[$i + 1]) && $tokens[$i + 1][0] === T_OBJECT_OPERATOR) {
array_splice($tokens, $i, 2, [
[T_NULLSAFE_OBJECT_OPERATOR, '?->', $line]
]);
$c--;
continue;
}
// Handle ?-> inside encapsed string.
if ($tokens[$i][0] === T_ENCAPSED_AND_WHITESPACE && isset($tokens[$i - 1])
&& $tokens[$i - 1][0] === T_VARIABLE
&& preg_match('/^?->([a-zA-Z_x80-xff][a-zA-Z0-9_x80-xff]*)/', $tokens[$i][1], $matches)
) {
$replacement = [
[T_NULLSAFE_OBJECT_OPERATOR, '?->', $line],
[T_STRING, $matches[1], $line],
];
if (strlen($matches[0]) !== strlen($tokens[$i][1])) {
$replacement[] = [
T_ENCAPSED_AND_WHITESPACE,
substr($tokens[$i][1], strlen($matches[0])),
$line
];
}
array_splice($tokens, $i, 1, $replacement);
$c += count($replacement) - 1;
continue;
}
if (is_array($tokens[$i])) {
$line += substr_count($tokens[$i][1], "n");
}
}
return $tokens;
}
public function reverseEmulate(string $code, array $tokens): array
{
// ?-> was not valid code previously, don't bother.
return $tokens;
}
}