class HereNowdocIdentifierSpacingSniff

class HereNowdocIdentifierSpacingSniff implements Sniff {
    
    /**
     * Returns an array of tokens this test wants to listen for.
     *
     * @return array<int|string>
     */
    public function register() {
        return [
            T_START_HEREDOC,
            T_START_NOWDOC,
        ];
    }
    
    //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 = $phpcsFile->getTokens();
        if (strpos($tokens[$stackPtr]['content'], ' ') === false && strpos($tokens[$stackPtr]['content'], "\t") === false) {
            // Nothing to do.
            $phpcsFile->recordMetric($stackPtr, 'Heredoc/nowdoc identifier', 'no space between <<< and ID');
            return;
        }
        $phpcsFile->recordMetric($stackPtr, 'Heredoc/nowdoc identifier', 'space between <<< and ID');
        $error = 'There should be no space between the <<< and the heredoc/nowdoc identifier string';
        $data = [
            $tokens[$stackPtr]['content'],
        ];
        $fix = $phpcsFile->addFixableError($error, $stackPtr, 'SpaceFound', $data);
        if ($fix === true) {
            $replacement = str_replace([
                ' ',
                "\t",
            ], '', $tokens[$stackPtr]['content']);
            $phpcsFile->fixer
                ->replaceToken($stackPtr, $replacement);
        }
    }
    
    //end process()

}