<?php
/**
* Detects unnecessary final modifiers inside of final classes.
*
* This rule is based on the PMD rule catalogue. The Unnecessary Final Modifier
* sniff detects the use of the final modifier inside of a final class which
* is unnecessary.
*
* <code>
* final class Foo
* {
* public final function bar()
* {
* }
* }
* </code>
*
* @author Manuel Pichler <mapi@manuel-pichler.de>
* @copyright 2007-2014 Manuel Pichler. All rights reserved.
* @license https://github.com/squizlabs/PHP_CodeSniffer/blob/master/licence.txt BSD Licence
*/
namespace PHP_CodeSniffer\Standards\Generic\Sniffs\CodeAnalysis;
use PHP_CodeSniffer\Files\File;
use PHP_CodeSniffer\Sniffs\Sniff;
use PHP_CodeSniffer\Util\Tokens;
class UnnecessaryFinalModifierSniff implements Sniff
{
/**
* Registers the tokens that this sniff wants to listen for.
*
* @return int[]
*/
public function register()
{
return [T_CLASS];
}//end register()
/**
* Processes this test, when one of its tokens is encountered.
*
* @param \PHP_CodeSniffer\Files\File $phpcsFile The file being scanned.
* @param int $stackPtr The position of the current token
* in the stack passed in $tokens.
*
* @return void
*/
public function process(File $phpcsFile, $stackPtr)
{
$tokens = $phpcsFile->getTokens();
$token = $tokens[$stackPtr];
// Skip for-statements without body.
if (isset($token['scope_opener']) === false) {
return;
}
// Fetch previous token.
$prev = $phpcsFile->findPrevious(Tokens::$emptyTokens, ($stackPtr - 1), null, true);
// Skip for non final class.
if ($prev === false || $tokens[$prev]['code'] !== T_FINAL) {
return;
}
$next = ++$token['scope_opener'];
$end = --$token['scope_closer'];
for (; $next <= $end; ++$next) {
if ($tokens[$next]['code'] === T_FINAL) {
$error = 'Unnecessary FINAL modifier in FINAL class';
$phpcsFile->addWarning($error, $next, 'Found');
}
}
}//end process()
}//end class