src/Tokenizer/Tokens.php
public function ensureWhitespaceAtIndex($index, $indexOffset, $whitespace)
    {
        $removeLastCommentLine = static function (self $tokens, $index, $indexOffset, $whitespace) {
            $token = $tokens[$index];

            if (1 === $indexOffset && $token->isGivenKind(T_OPEN_TAG)) {
                if (0 === strpos($whitespace, "\r\n")) {
                    $tokens[$index] = new Token([T_OPEN_TAG, rtrim($token->getContent())."\r\n"]);

                    return \strlen($whitespace) > 2 // can be removed on PHP 7; https://php.net/manual/en/function.substr.php
                        ? substr($whitespace, 2)
                        : ''
                    ;
                }

                $tokens[$index] = new Token([T_OPEN_TAG, rtrim($token->getContent()).$whitespace[0]]);

                return \strlen($whitespace) > 1 // can be removed on PHP 7; https://php.net/manual/en/function.substr.php
                    ? substr($whitespace, 1)
                    : ''
                ;
            }

            return $whitespace;
        };

        if ($this[$index]->isWhitespace()) {
            $whitespace = $removeLastCommentLine($this, $index - 1, $indexOffset, $whitespace);

            if ('' === $whitespace) {
                $this->clearAt($index);
            } else {
                $this[$index] = new Token([T_WHITESPACE, $whitespace]);
            }

            return false;
        }

        $whitespace = $removeLastCommentLine($this, $index, $indexOffset, $whitespace);
        if ('' === $whitespace) {
            return false;
        }

        $this->insertAt(
            $index + $indexOffset,
            [
                new Token([T_WHITESPACE, $whitespace]),
            ]
        );

        return true;
    }
public function ensureWhitespaceAtIndex($index, $indexOffset, $whitespace)
    {
        $removeLastCommentLine = static function (self $tokens, $index, $indexOffset, $whitespace) {
            $token = $tokens[$index];

            if (1 === $indexOffset && $token->isGivenKind(T_OPEN_TAG)) {
                if (0 === strpos($whitespace, "\r\n")) {
                    $tokens[$index] = new Token([T_OPEN_TAG, rtrim($token->getContent())."\r\n"]);

                    return \strlen($whitespace) > 2 // can be removed on PHP 7; https://php.net/manual/en/function.substr.php
                        ? substr($whitespace, 2)
                        : ''
                    ;
                }

                $tokens[$index] = new Token([T_OPEN_TAG, rtrim($token->getContent()).$whitespace[0]]);

                return \strlen($whitespace) > 1 // can be removed on PHP 7; https://php.net/manual/en/function.substr.php
                    ? substr($whitespace, 1)
                    : ''
                ;
            }

            return $whitespace;
        };

        if ($this[$index]->isWhitespace()) {
            $whitespace = $removeLastCommentLine($this, $index - 1, $indexOffset, $whitespace);

            if ('' === $whitespace) {
                $this->clearAt($index);
            } else {
                $this[$index] = new Token([T_WHITESPACE, $whitespace]);
            }

            return false;
        }

        $whitespace = $removeLastCommentLine($this, $index, $indexOffset, $whitespace);
        if ('' === $whitespace) {
            return false;
        }

        $this->insertAt(
            $index + $indexOffset,
            [
                new Token([T_WHITESPACE, $whitespace]),
            ]
        );

        return true;
    }
public function ensureWhitespaceAtIndex ( $ index , $ indexOffset , $ whitespace ) { $ removeLastCommentLine = static function ( self $ tokens , $ index , $ indexOffset , $ whitespace ) { $ token = $ tokens [ $ index ] ; if ( 1 === $ indexOffset && $ token -> isGivenKind ( T_OPEN_TAG ) ) { if ( 0 === strpos ( $ whitespace , "\r\n" ) ) { $ tokens [ $ index ] = new Token ( [ T_OPEN_TAG , rtrim ( $ token -> getContent ( ) ) . "\r\n" ] ) ; return \ strlen ( $ whitespace ) > 2 // can be removed on PHP 7; https://php.net/manual/en/function.substr.php ? substr ( $ whitespace , 2 ) : '' ; } $ tokens [ $ index ] = new Token ( [ T_OPEN_TAG , rtrim ( $ token -> getContent ( ) ) . $ whitespace [ 0 ] ] ) ; return \ strlen ( $ whitespace ) > 1 // can be removed on PHP 7; https://php.net/manual/en/function.substr.php ? substr ( $ whitespace , 1 ) : '' ; } return $ whitespace ; } ; if ( $ this [ $ index ] -> isWhitespace ( ) ) { $ whitespace = $ removeLastCommentLine ( $ this , $ index - 1 , $ indexOffset , $ whitespace ) ; if ( '' === $ whitespace ) { $ this -> clearAt ( $ index ) ; } else { $ this [ $ index ] = new Token ( [ T_WHITESPACE , $ whitespace ] ) ; } return false ; } $ whitespace = $ removeLastCommentLine ( $ this , $ index , $ indexOffset , $ whitespace ) ; if ( '' === $ whitespace ) { return false ; } $ this -> insertAt ( $ index + $ indexOffset , [ new Token ( [ T_WHITESPACE , $ whitespace ] ) , ] ) ; return true ; }
Ensure that on given index is a whitespace with given kind.

If there is a whitespace then it's content will be modified.
If not - the new Token will be added.

@param int    $index       index
@param int    $indexOffset index offset for Token insertion
@param string $whitespace  whitespace to set

@return bool if new Token was added
Ensure that on given index is a whitespace with given kind .