class InlineIfDeclarationSniff

class InlineIfDeclarationSniff implements Sniff {
    
    /**
     * Returns an array of tokens this test wants to listen for.
     *
     * @return array<int|string>
     */
    public function register() {
        return [
            T_INLINE_THEN,
        ];
    }
    
    //end register()
    
    /**
     * Processes this sniff, 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();
        $openBracket = null;
        $closeBracket = null;
        if (isset($tokens[$stackPtr]['nested_parenthesis']) === true) {
            $parens = $tokens[$stackPtr]['nested_parenthesis'];
            $openBracket = array_pop($parens);
            $closeBracket = $tokens[$openBracket]['parenthesis_closer'];
        }
        // Find the beginning of the statement. If we don't find a
        // semicolon (end of statement) or comma (end of array value)
        // then assume the content before the closing parenthesis is the end.
        $else = $phpcsFile->findNext(T_INLINE_ELSE, $stackPtr + 1);
        $statementEnd = $phpcsFile->findNext([
            T_SEMICOLON,
            T_COMMA,
        ], $else + 1, $closeBracket);
        if ($statementEnd === false) {
            $statementEnd = $phpcsFile->findPrevious(T_WHITESPACE, $closeBracket - 1, null, true);
        }
        // Make sure it's all on the same line.
        if ($tokens[$statementEnd]['line'] !== $tokens[$stackPtr]['line']) {
            $error = 'Inline shorthand IF statement must be declared on a single line';
            $phpcsFile->addError($error, $stackPtr, 'NotSingleLine');
            return;
        }
        // Make sure there are spaces around the question mark.
        $contentBefore = $phpcsFile->findPrevious(T_WHITESPACE, $stackPtr - 1, null, true);
        $contentAfter = $phpcsFile->findNext(T_WHITESPACE, $stackPtr + 1, null, true);
        if ($tokens[$contentBefore]['code'] !== T_CLOSE_PARENTHESIS) {
            $error = 'Inline shorthand IF statement requires brackets around comparison';
            $phpcsFile->addError($error, $stackPtr, 'NoBrackets');
        }
        $spaceBefore = $tokens[$stackPtr]['column'] - ($tokens[$contentBefore]['column'] + $tokens[$contentBefore]['length']);
        if ($spaceBefore !== 1) {
            $error = 'Inline shorthand IF statement requires 1 space before THEN; %s found';
            $data = [
                $spaceBefore,
            ];
            $fix = $phpcsFile->addFixableError($error, $stackPtr, 'SpacingBeforeThen', $data);
            if ($fix === true) {
                if ($spaceBefore === 0) {
                    $phpcsFile->fixer
                        ->addContentBefore($stackPtr, ' ');
                }
                else {
                    $phpcsFile->fixer
                        ->replaceToken($stackPtr - 1, ' ');
                }
            }
        }
        // If there is no content between the ? and the : operators, then they are
        // trying to replicate an elvis operator, even though PHP doesn't have one.
        // In this case, we want no spaces between the two operators so ?: looks like
        // an operator itself.
        $next = $phpcsFile->findNext(T_WHITESPACE, $stackPtr + 1, null, true);
        if ($tokens[$next]['code'] === T_INLINE_ELSE) {
            $inlineElse = $next;
            if ($inlineElse !== $stackPtr + 1) {
                $error = 'Inline shorthand IF statement without THEN statement requires 0 spaces between THEN and ELSE';
                $fix = $phpcsFile->addFixableError($error, $stackPtr, 'ElvisSpacing');
                if ($fix === true) {
                    $phpcsFile->fixer
                        ->replaceToken($stackPtr + 1, '');
                }
            }
        }
        else {
            $spaceAfter = $tokens[$contentAfter]['column'] - ($tokens[$stackPtr]['column'] + 1);
            if ($spaceAfter !== 1) {
                $error = 'Inline shorthand IF statement requires 1 space after THEN; %s found';
                $data = [
                    $spaceAfter,
                ];
                $fix = $phpcsFile->addFixableError($error, $stackPtr, 'SpacingAfterThen', $data);
                if ($fix === true) {
                    if ($spaceAfter === 0) {
                        $phpcsFile->fixer
                            ->addContent($stackPtr, ' ');
                    }
                    else {
                        $phpcsFile->fixer
                            ->replaceToken($stackPtr + 1, ' ');
                    }
                }
            }
            // Make sure the ELSE has the correct spacing.
            $inlineElse = $phpcsFile->findNext(T_INLINE_ELSE, $stackPtr + 1, $statementEnd, false);
            $contentBefore = $phpcsFile->findPrevious(T_WHITESPACE, $inlineElse - 1, null, true);
            $spaceBefore = $tokens[$inlineElse]['column'] - ($tokens[$contentBefore]['column'] + $tokens[$contentBefore]['length']);
            if ($spaceBefore !== 1) {
                $error = 'Inline shorthand IF statement requires 1 space before ELSE; %s found';
                $data = [
                    $spaceBefore,
                ];
                $fix = $phpcsFile->addFixableError($error, $inlineElse, 'SpacingBeforeElse', $data);
                if ($fix === true) {
                    if ($spaceBefore === 0) {
                        $phpcsFile->fixer
                            ->addContentBefore($inlineElse, ' ');
                    }
                    else {
                        $phpcsFile->fixer
                            ->replaceToken($inlineElse - 1, ' ');
                    }
                }
            }
        }
        
        //end if
        $contentAfter = $phpcsFile->findNext(T_WHITESPACE, $inlineElse + 1, null, true);
        $spaceAfter = $tokens[$contentAfter]['column'] - ($tokens[$inlineElse]['column'] + 1);
        if ($spaceAfter !== 1) {
            $error = 'Inline shorthand IF statement requires 1 space after ELSE; %s found';
            $data = [
                $spaceAfter,
            ];
            $fix = $phpcsFile->addFixableError($error, $inlineElse, 'SpacingAfterElse', $data);
            if ($fix === true) {
                if ($spaceAfter === 0) {
                    $phpcsFile->fixer
                        ->addContent($inlineElse, ' ');
                }
                else {
                    $phpcsFile->fixer
                        ->replaceToken($inlineElse + 1, ' ');
                }
            }
        }
    }
    
    //end process()

}