DisallowNonCapturingCatchSniff.php

<?php

declare (strict_types=1);
namespace SlevomatCodingStandard\Sniffs\Exceptions;

use PHP_CodeSniffer\Files\File;
use PHP_CodeSniffer\Sniffs\Sniff;
use SlevomatCodingStandard\Helpers\TokenHelper;
use const T_CATCH;
use const T_VARIABLE;
class DisallowNonCapturingCatchSniff implements Sniff {
    public const CODE_DISALLOWED_NON_CAPTURING_CATCH = 'DisallowedNonCapturingCatch';
    
    /**
     * @return array<int, (int|string)>
     */
    public function register() : array {
        return [
            T_CATCH,
        ];
    }
    
    /**
     * @phpcsSuppress SlevomatCodingStandard.TypeHints.ParameterTypeHint.MissingNativeTypeHint
     * @param int $catchPointer
     */
    public function process(File $phpcsFile, $catchPointer) : void {
        $tokens = $phpcsFile->getTokens();
        $variablePointer = TokenHelper::findNext($phpcsFile, T_VARIABLE, $tokens[$catchPointer]['parenthesis_opener'], $tokens[$catchPointer]['parenthesis_closer']);
        if ($variablePointer === null) {
            $phpcsFile->addError('Use of non-capturing catch is disallowed.', $catchPointer, self::CODE_DISALLOWED_NON_CAPTURING_CATCH);
        }
    }

}