<?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,
		];
	}

	public function process(File $phpcsFile, int $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);
		}
	}

}
