PhpCsFixer\Fixer\ControlStructure\NoUnneededControlParenthesesFixer::fix PHP Method

    public function fix(\SplFileInfo $file, Tokens $tokens)
    {
        // Checks if specific statements are set and uses them in this case.
        $loops = array_intersect_key(self::$loops, array_flip($this->controlStatements));
        foreach ($tokens as $index => $token) {
            if (!$token->equals('(')) {
                continue;
            }
            $blockStartIndex = $index;
            $index = $tokens->getPrevMeaningfulToken($index);
            $token = $tokens[$index];
            foreach ($loops as $loop) {
                if (!$token->isGivenKind($loop['lookupTokens'])) {
                    continue;
                }
                $blockEndIndex = $tokens->findBlockEnd(Tokens::BLOCK_TYPE_PARENTHESIS_BRACE, $blockStartIndex);
                $blockEndNextIndex = $tokens->getNextMeaningfulToken($blockEndIndex);
                if (!$tokens[$blockEndNextIndex]->equalsAny($loop['neededSuccessors'])) {
                    continue;
                }
                if (array_key_exists('forbiddenContents', $loop)) {
                    $forbiddenTokenIndex = $tokens->getNextTokenOfKind($blockStartIndex, $loop['forbiddenContents']);
                    // A forbidden token is found and is inside the parenthesis.
                    if (null !== $forbiddenTokenIndex && $forbiddenTokenIndex < $blockEndIndex) {
                        continue;
                    }
                }
                if ($tokens[$blockStartIndex - 1]->isWhitespace() || $tokens[$blockStartIndex - 1]->isComment()) {
                    $tokens->clearTokenAndMergeSurroundingWhitespace($blockStartIndex);
                } else {
                    // Adds a space to prevent broken code like `return2`.
                    $tokens->overrideAt($blockStartIndex, array(T_WHITESPACE, ' '));
                }
                $tokens->clearTokenAndMergeSurroundingWhitespace($blockEndIndex);
            }
        }
    }