class LanguageConstructSpacingSniff

class LanguageConstructSpacingSniff implements Sniff {
    
    /**
     * Returns an array of tokens this test wants to listen for.
     *
     * @return array<int|string>
     */
    public function register() {
        return [
            T_ECHO,
            T_PRINT,
            T_RETURN,
            T_INCLUDE,
            T_INCLUDE_ONCE,
            T_REQUIRE,
            T_REQUIRE_ONCE,
            T_NEW,
        ];
    }
    
    //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) {
        $tokens = $phpcsFile->getTokens();
        if (isset($tokens[$stackPtr + 1]) === false) {
            // Skip if there is no next token.
            return;
        }
        if ($tokens[$stackPtr + 1]['code'] === T_SEMICOLON) {
            // No content for this language construct.
            return;
        }
        if ($tokens[$stackPtr + 1]['code'] === T_WHITESPACE) {
            $content = $tokens[$stackPtr + 1]['content'];
            if ($content !== ' ') {
                $error = 'Language constructs must be followed by a single space; expected 1 space but found "%s"';
                $data = [
                    Util\Common::prepareForOutput($content),
                ];
                $fix = $phpcsFile->addFixableError($error, $stackPtr, 'IncorrectSingle', $data);
                if ($fix === true) {
                    $phpcsFile->fixer
                        ->replaceToken($stackPtr + 1, ' ');
                }
            }
        }
        else {
            if ($tokens[$stackPtr + 1]['code'] !== T_OPEN_PARENTHESIS) {
                $error = 'Language constructs must be followed by a single space; expected "%s" but found "%s"';
                $data = [
                    $tokens[$stackPtr]['content'] . ' ' . $tokens[$stackPtr + 1]['content'],
                    $tokens[$stackPtr]['content'] . $tokens[$stackPtr + 1]['content'],
                ];
                $fix = $phpcsFile->addFixableError($error, $stackPtr, 'Incorrect', $data);
                if ($fix === true) {
                    $phpcsFile->fixer
                        ->addContent($stackPtr, ' ');
                }
            }
        }
        
        //end if
    }
    
    //end process()

}