PhpCsFixer\Fixer\CastNotation\CastSpacesFixer::fix PHP Method

    public function fix(\SplFileInfo $file, Tokens $tokens)
    {
        static $insideCastSpaceReplaceMap = array(' ' => '', "\t" => '', "\n" => '', "\r" => '', "" => '', "\v" => '');
        foreach ($tokens as $index => $token) {
            if ($token->isCast()) {
                $token->setContent(strtr($token->getContent(), $insideCastSpaceReplaceMap));
                // force single whitespace after cast token:
                if ($tokens[$index + 1]->isWhitespace(" \t")) {
                    // - if next token is whitespaces that contains only spaces and tabs - override next token with single space
                    $tokens[$index + 1]->setContent(' ');
                } elseif (!$tokens[$index + 1]->isWhitespace()) {
                    // - if next token is not whitespaces that contains spaces, tabs and new lines - append single space to current token
                    $tokens->insertAt($index + 1, new Token(array(T_WHITESPACE, ' ')));
                }
            }
        }
    }