PhpCsFixer\Fixer\Whitespace\NoSpacesInsideParenthesisFixer::fix PHP Method

    public function fix(\SplFileInfo $file, Tokens $tokens)
    {
        foreach ($tokens as $index => $token) {
            if (!$token->equals('(')) {
                continue;
            }
            $prevIndex = $tokens->getPrevMeaningfulToken($index);
            // ignore parenthesis for T_ARRAY
            if (null !== $prevIndex && $tokens[$prevIndex]->isGivenKind(T_ARRAY)) {
                continue;
            }
            $endIndex = $tokens->findBlockEnd(Tokens::BLOCK_TYPE_PARENTHESIS_BRACE, $index);
            // remove space after opening `(`
            $this->removeSpaceAroundToken($tokens[$index + 1]);
            // remove space before closing `)` if it is not `list($a, $b, )` case
            if (!$tokens[$tokens->getPrevMeaningfulToken($endIndex)]->equals(',')) {
                $this->removeSpaceAroundToken($tokens[$endIndex - 1]);
            }
        }
    }