class ControlStructureSpacingSniff

class ControlStructureSpacingSniff implements Sniff {
    
    /**
     * How many spaces should follow the opening bracket.
     *
     * @var integer
     */
    public $requiredSpacesAfterOpen = 0;
    
    /**
     * How many spaces should precede the closing bracket.
     *
     * @var integer
     */
    public $requiredSpacesBeforeClose = 0;
    
    /**
     * Returns an array of tokens this test wants to listen for.
     *
     * @return array<int|string>
     */
    public function register() {
        return [
            T_IF,
            T_WHILE,
            T_FOREACH,
            T_FOR,
            T_SWITCH,
            T_ELSEIF,
            T_CATCH,
            T_MATCH,
        ];
    }
    
    //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) {
        $this->requiredSpacesAfterOpen = (int) $this->requiredSpacesAfterOpen;
        $this->requiredSpacesBeforeClose = (int) $this->requiredSpacesBeforeClose;
        $tokens = $phpcsFile->getTokens();
        if (isset($tokens[$stackPtr]['parenthesis_opener']) === false || isset($tokens[$stackPtr]['parenthesis_closer']) === false) {
            return;
        }
        $parenOpener = $tokens[$stackPtr]['parenthesis_opener'];
        $parenCloser = $tokens[$stackPtr]['parenthesis_closer'];
        $nextContent = $phpcsFile->findNext(T_WHITESPACE, $parenOpener + 1, null, true);
        if (in_array($tokens[$nextContent]['code'], Tokens::$commentTokens, true) === false) {
            $spaceAfterOpen = 0;
            if ($tokens[$parenOpener + 1]['code'] === T_WHITESPACE) {
                if (strpos($tokens[$parenOpener + 1]['content'], $phpcsFile->eolChar) !== false) {
                    $spaceAfterOpen = 'newline';
                }
                else {
                    $spaceAfterOpen = $tokens[$parenOpener + 1]['length'];
                }
            }
            $phpcsFile->recordMetric($stackPtr, 'Spaces after control structure open parenthesis', $spaceAfterOpen);
            if ($spaceAfterOpen !== $this->requiredSpacesAfterOpen) {
                $error = 'Expected %s spaces after opening bracket; %s found';
                $data = [
                    $this->requiredSpacesAfterOpen,
                    $spaceAfterOpen,
                ];
                $fix = $phpcsFile->addFixableError($error, $parenOpener + 1, 'SpacingAfterOpenBrace', $data);
                if ($fix === true) {
                    $padding = str_repeat(' ', $this->requiredSpacesAfterOpen);
                    if ($spaceAfterOpen === 0) {
                        $phpcsFile->fixer
                            ->addContent($parenOpener, $padding);
                    }
                    else {
                        if ($spaceAfterOpen === 'newline') {
                            $phpcsFile->fixer
                                ->replaceToken($parenOpener + 1, '');
                        }
                        else {
                            $phpcsFile->fixer
                                ->replaceToken($parenOpener + 1, $padding);
                        }
                    }
                }
            }
        }
        
        //end if
        $prev = $phpcsFile->findPrevious(T_WHITESPACE, $parenCloser - 1, $parenOpener, true);
        if ($tokens[$prev]['line'] === $tokens[$parenCloser]['line']) {
            $spaceBeforeClose = 0;
            if ($tokens[$parenCloser - 1]['code'] === T_WHITESPACE) {
                $spaceBeforeClose = strlen(ltrim($tokens[$parenCloser - 1]['content'], $phpcsFile->eolChar));
            }
            $phpcsFile->recordMetric($stackPtr, 'Spaces before control structure close parenthesis', $spaceBeforeClose);
            if ($spaceBeforeClose !== $this->requiredSpacesBeforeClose) {
                $error = 'Expected %s spaces before closing bracket; %s found';
                $data = [
                    $this->requiredSpacesBeforeClose,
                    $spaceBeforeClose,
                ];
                $fix = $phpcsFile->addFixableError($error, $parenCloser - 1, 'SpaceBeforeCloseBrace', $data);
                if ($fix === true) {
                    $padding = str_repeat(' ', $this->requiredSpacesBeforeClose);
                    if ($spaceBeforeClose === 0) {
                        $phpcsFile->fixer
                            ->addContentBefore($parenCloser, $padding);
                    }
                    else {
                        $phpcsFile->fixer
                            ->replaceToken($parenCloser - 1, $padding);
                    }
                }
            }
        }
        
        //end if
    }
    
    //end process()

}