public function InlineCommentSniff::process in Coder 8.3

Same name and namespace in other branches

1. 8.2 coder_sniffer/Drupal/Sniffs/Commenting/InlineCommentSniff.php \Drupal\Sniffs\Commenting\InlineCommentSniff::process()
2. 8.3.x coder_sniffer/Drupal/Sniffs/Commenting/InlineCommentSniff.php \Drupal\Sniffs\Commenting\InlineCommentSniff::process()

Processes this test, when one of its tokens is encountered.

Parameters

\PHP_CodeSniffer\Files\File $phpcsFile The file being scanned.:

int $stackPtr The position of the current token in the: stack passed in $tokens.

Return value

int|void

File

coder_sniffer/Drupal/Sniffs/Commenting/InlineCommentSniff.php, line 56

Class

InlineCommentSniff

\Drupal\Sniffs\Commenting\InlineCommentSniff.

Namespace

Drupal\Sniffs\Commenting

Code

public function process(File $phpcsFile, $stackPtr) {
  $tokens = $phpcsFile
    ->getTokens();

  // If this is a function/class/interface doc block comment, skip it.
  // We are only interested in inline doc block comments, which are
  // not allowed.
  if ($tokens[$stackPtr]['code'] === T_DOC_COMMENT_OPEN_TAG) {
    $nextToken = $phpcsFile
      ->findNext(Tokens::$emptyTokens, $stackPtr + 1, null, true);
    $ignore = [
      T_CLASS,
      T_INTERFACE,
      T_TRAIT,
      T_FUNCTION,
      T_CLOSURE,
      T_PUBLIC,
      T_PRIVATE,
      T_PROTECTED,
      T_FINAL,
      T_STATIC,
      T_ABSTRACT,
      T_CONST,
      T_PROPERTY,
      T_INCLUDE,
      T_INCLUDE_ONCE,
      T_REQUIRE,
      T_REQUIRE_ONCE,
      T_VAR,
    ];

    // Also ignore all doc blocks defined in the outer scope (no scope
    // conditions are set).
    if (in_array($tokens[$nextToken]['code'], $ignore, true) === true || empty($tokens[$stackPtr]['conditions']) === true) {
      return;
    }
    if ($phpcsFile->tokenizerType === 'JS') {

      // We allow block comments if a function or object
      // is being assigned to a variable.
      $ignore = Tokens::$emptyTokens;
      $ignore[] = T_EQUAL;
      $ignore[] = T_STRING;
      $ignore[] = T_OBJECT_OPERATOR;
      $nextToken = $phpcsFile
        ->findNext($ignore, $nextToken + 1, null, true);
      if ($tokens[$nextToken]['code'] === T_FUNCTION || $tokens[$nextToken]['code'] === T_CLOSURE || $tokens[$nextToken]['code'] === T_OBJECT || $tokens[$nextToken]['code'] === T_PROTOTYPE) {
        return;
      }
    }
    $prevToken = $phpcsFile
      ->findPrevious(Tokens::$emptyTokens, $stackPtr - 1, null, true);
    if ($tokens[$prevToken]['code'] === T_OPEN_TAG) {
      return;
    }

    // Inline doc blocks are allowed in JSDoc.
    if ($tokens[$stackPtr]['content'] === '/**' && $phpcsFile->tokenizerType !== 'JS') {

      // The only exception to inline doc blocks is the /** @var */
      // declaration. Allow that in any form.
      $varTag = $phpcsFile
        ->findNext([
        T_DOC_COMMENT_TAG,
      ], $stackPtr + 1, $tokens[$stackPtr]['comment_closer'], false, '@var');
      if ($varTag === false) {
        $error = 'Inline doc block comments are not allowed; use "/* Comment */" or "// Comment" instead';
        $phpcsFile
          ->addError($error, $stackPtr, 'DocBlock');
      }
    }
  }

  //end if
  if ($tokens[$stackPtr]['content'][0] === '#') {
    $error = 'Perl-style comments are not allowed; use "// Comment" instead';
    $fix = $phpcsFile
      ->addFixableError($error, $stackPtr, 'WrongStyle');
    if ($fix === true) {
      $comment = ltrim($tokens[$stackPtr]['content'], "# \t");
      $phpcsFile->fixer
        ->replaceToken($stackPtr, "// {$comment}");
    }
  }

  // We don't want end of block comments. Check if the last token before the
  // comment is a closing curly brace.
  $previousContent = $phpcsFile
    ->findPrevious(T_WHITESPACE, $stackPtr - 1, null, true);
  if ($tokens[$previousContent]['line'] === $tokens[$stackPtr]['line']) {
    if ($tokens[$previousContent]['code'] === T_CLOSE_CURLY_BRACKET) {
      return;
    }

    // Special case for JS files.
    if ($tokens[$previousContent]['code'] === T_COMMA || $tokens[$previousContent]['code'] === T_SEMICOLON) {
      $lastContent = $phpcsFile
        ->findPrevious(T_WHITESPACE, $previousContent - 1, null, true);
      if ($tokens[$lastContent]['code'] === T_CLOSE_CURLY_BRACKET) {
        return;
      }
    }
  }

  // Only want inline comments.
  if (substr($tokens[$stackPtr]['content'], 0, 2) !== '//') {
    return;
  }

  // Ignore code example lines.
  if ($this
    ->isInCodeExample($phpcsFile, $stackPtr) === true) {
    return;
  }
  $commentTokens = [
    $stackPtr,
  ];
  $nextComment = $stackPtr;
  $lastComment = $stackPtr;
  while (($nextComment = $phpcsFile
    ->findNext(T_COMMENT, $nextComment + 1, null, false)) !== false) {
    if ($tokens[$nextComment]['line'] !== $tokens[$lastComment]['line'] + 1) {
      break;
    }

    // Only want inline comments.
    if (substr($tokens[$nextComment]['content'], 0, 2) !== '//') {
      break;
    }

    // There is a comment on the very next line. If there is
    // no code between the comments, they are part of the same
    // comment block.
    $prevNonWhitespace = $phpcsFile
      ->findPrevious(T_WHITESPACE, $nextComment - 1, $lastComment, true);
    if ($prevNonWhitespace !== $lastComment) {
      break;
    }

    // A comment starting with "@" means a new comment section.
    if (preg_match('|^//[\\s]*@|', $tokens[$nextComment]['content']) === 1) {
      break;
    }
    $commentTokens[] = $nextComment;
    $lastComment = $nextComment;
  }

  //end while
  $commentText = '';
  $lastCommentToken = $stackPtr;
  foreach ($commentTokens as $lastCommentToken) {
    $comment = rtrim($tokens[$lastCommentToken]['content']);
    if (trim(substr($comment, 2)) === '') {
      continue;
    }
    $spaceCount = 0;
    $tabFound = false;
    $commentLength = strlen($comment);
    for ($i = 2; $i < $commentLength; $i++) {
      if ($comment[$i] === "\t") {
        $tabFound = true;
        break;
      }
      if ($comment[$i] !== ' ') {
        break;
      }
      $spaceCount++;
    }
    $fix = false;
    if ($tabFound === true) {
      $error = 'Tab found before comment text; expected "// %s" but found "%s"';
      $data = [
        ltrim(substr($comment, 2)),
        $comment,
      ];
      $fix = $phpcsFile
        ->addFixableError($error, $lastCommentToken, 'TabBefore', $data);
    }
    else {
      if ($spaceCount === 0) {
        $error = 'No space found before comment text; expected "// %s" but found "%s"';
        $data = [
          substr($comment, 2),
          $comment,
        ];
        $fix = $phpcsFile
          ->addFixableError($error, $lastCommentToken, 'NoSpaceBefore', $data);
      }
    }

    //end if
    if ($fix === true) {
      $newComment = '// ' . ltrim($tokens[$lastCommentToken]['content'], "/\t ");
      $phpcsFile->fixer
        ->replaceToken($lastCommentToken, $newComment);
    }
    if ($spaceCount > 1) {

      // Check if there is a comment on the previous line that justifies the
      // indentation.
      $prevComment = $phpcsFile
        ->findPrevious([
        T_COMMENT,
      ], $lastCommentToken - 1, null, false);
      if ($prevComment !== false && $tokens[$prevComment]['line'] === $tokens[$lastCommentToken]['line'] - 1) {
        $prevCommentText = rtrim($tokens[$prevComment]['content']);
        $prevSpaceCount = 0;
        for ($i = 2; $i < strlen($prevCommentText); $i++) {
          if ($prevCommentText[$i] !== ' ') {
            break;
          }
          $prevSpaceCount++;
        }
        if ($spaceCount > $prevSpaceCount && $prevSpaceCount > 0) {

          // A previous comment could be a list item or @todo.
          $indentationStarters = [
            '-',
            '@todo',
          ];
          $words = preg_split('/\\s+/', $prevCommentText);
          $numberedList = (bool) preg_match('/^[0-9]+\\./', $words[1]);
          if (in_array($words[1], $indentationStarters) === true) {
            if ($spaceCount !== $prevSpaceCount + 2) {
              $error = 'Comment indentation error after %s element, expected %s spaces';
              $fix = $phpcsFile
                ->addFixableError($error, $lastCommentToken, 'SpacingBefore', [
                $words[1],
                $prevSpaceCount + 2,
              ]);
              if ($fix === true) {
                $newComment = '//' . str_repeat(' ', $prevSpaceCount + 2) . ltrim($tokens[$lastCommentToken]['content'], "/\t ");
                $phpcsFile->fixer
                  ->replaceToken($lastCommentToken, $newComment);
              }
            }
          }
          else {
            if ($numberedList === true) {
              $expectedSpaceCount = $prevSpaceCount + strlen($words[1]) + 1;
              if ($spaceCount !== $expectedSpaceCount) {
                $error = 'Comment indentation error, expected %s spaces';
                $fix = $phpcsFile
                  ->addFixableError($error, $lastCommentToken, 'SpacingBefore', [
                  $expectedSpaceCount,
                ]);
                if ($fix === true) {
                  $newComment = '//' . str_repeat(' ', $expectedSpaceCount) . ltrim($tokens[$lastCommentToken]['content'], "/\t ");
                  $phpcsFile->fixer
                    ->replaceToken($lastCommentToken, $newComment);
                }
              }
            }
            else {
              $error = 'Comment indentation error, expected only %s spaces';
              $phpcsFile
                ->addError($error, $lastCommentToken, 'SpacingBefore', [
                $prevSpaceCount,
              ]);
            }
          }

          //end if
        }

        //end if
      }
      else {
        $error = '%s spaces found before inline comment; expected "// %s" but found "%s"';
        $data = [
          $spaceCount,
          substr($comment, 2 + $spaceCount),
          $comment,
        ];
        $fix = $phpcsFile
          ->addFixableError($error, $lastCommentToken, 'SpacingBefore', $data);
        if ($fix === true) {
          $phpcsFile->fixer
            ->replaceToken($lastCommentToken, '// ' . substr($comment, 2 + $spaceCount) . $phpcsFile->eolChar);
        }
      }

      //end if
    }

    //end if
    $commentText .= trim(substr($tokens[$lastCommentToken]['content'], 2));
  }

  //end foreach
  if ($commentText === '') {
    $error = 'Blank comments are not allowed';
    $fix = $phpcsFile
      ->addFixableError($error, $stackPtr, 'Empty');
    if ($fix === true) {
      $phpcsFile->fixer
        ->replaceToken($stackPtr, '');
    }
    return $lastCommentToken + 1;
  }
  $words = preg_split('/\\s+/', $commentText);
  if (preg_match('/^\\p{Ll}/u', $commentText) === 1) {

    // Allow special lower cased words that contain non-alpha characters
    // (function references, machine names with underscores etc.).
    $matches = [];
    preg_match('/[a-z]+/', $words[0], $matches);
    if (isset($matches[0]) === true && $matches[0] === $words[0]) {
      $error = 'Inline comments must start with a capital letter';
      $fix = $phpcsFile
        ->addFixableError($error, $stackPtr, 'NotCapital');
      if ($fix === true) {
        $newComment = preg_replace("/{$words[0]}/", ucfirst($words[0]), $tokens[$stackPtr]['content'], 1);
        $phpcsFile->fixer
          ->replaceToken($stackPtr, $newComment);
      }
    }
  }

  // Only check the end of comment character if the start of the comment
  // is a letter, indicating that the comment is just standard text.
  if (preg_match('/^\\p{L}/u', $commentText) === 1) {
    $commentCloser = $commentText[strlen($commentText) - 1];
    $acceptedClosers = [
      'full-stops' => '.',
      'exclamation marks' => '!',
      'question marks' => '?',
      'colons' => ':',
      'or closing parentheses' => ')',
    ];

    // Allow special last words like URLs or function references
    // without punctuation.
    $lastWord = $words[count($words) - 1];
    $matches = [];
    preg_match('/https?:\\/\\/.+/', $lastWord, $matches);
    $isUrl = isset($matches[0]) === true;
    preg_match('/[$a-zA-Z_]+\\([$a-zA-Z_]*\\)/', $lastWord, $matches);
    $isFunction = isset($matches[0]) === true;

    // Also allow closing tags like @endlink or @endcode.
    $isEndTag = $lastWord[0] === '@';
    if (in_array($commentCloser, $acceptedClosers, true) === false && $isUrl === false && $isFunction === false && $isEndTag === false) {
      $error = 'Inline comments must end in %s';
      $ender = '';
      foreach ($acceptedClosers as $closerName => $symbol) {
        $ender .= ' ' . $closerName . ',';
      }
      $ender = trim($ender, ' ,');
      $data = [
        $ender,
      ];
      $fix = $phpcsFile
        ->addFixableError($error, $lastCommentToken, 'InvalidEndChar', $data);
      if ($fix === true) {
        $newContent = preg_replace('/(\\s+)$/', '.$1', $tokens[$lastCommentToken]['content']);
        $phpcsFile->fixer
          ->replaceToken($lastCommentToken, $newContent);
      }
    }
  }

  //end if

  // Finally, the line below the last comment cannot be empty if this inline
  // comment is on a line by itself.
  if ($tokens[$previousContent]['line'] < $tokens[$stackPtr]['line']) {
    $next = $phpcsFile
      ->findNext(T_WHITESPACE, $lastCommentToken + 1, null, true);
    if ($next === false) {

      // Ignore if the comment is the last non-whitespace token in a file.
      return $lastCommentToken + 1;
    }
    if ($tokens[$next]['code'] === T_DOC_COMMENT_OPEN_TAG) {

      // If this inline comment is followed by a docblock,
      // ignore spacing as docblock/function etc spacing rules
      // are likely to conflict with our rules.
      return $lastCommentToken + 1;
    }
    $errorCode = 'SpacingAfter';
    if (isset($tokens[$stackPtr]['conditions']) === true) {
      $conditions = $tokens[$stackPtr]['conditions'];
      $type = end($conditions);
      $conditionPtr = key($conditions);
      if (($type === T_FUNCTION || $type === T_CLOSURE) && $tokens[$conditionPtr]['scope_closer'] === $next) {
        $errorCode = 'SpacingAfterAtFunctionEnd';
      }
    }
    for ($i = $lastCommentToken + 1; $i < $phpcsFile->numTokens; $i++) {
      if ($tokens[$i]['line'] === $tokens[$lastCommentToken]['line'] + 1) {
        if ($tokens[$i]['code'] !== T_WHITESPACE) {
          return $lastCommentToken + 1;
        }
      }
      else {
        if ($tokens[$i]['line'] > $tokens[$lastCommentToken]['line'] + 1) {
          break;
        }
      }
    }
    $error = 'There must be no blank line following an inline comment';
    $fix = $phpcsFile
      ->addFixableWarning($error, $lastCommentToken, $errorCode);
    if ($fix === true) {
      $phpcsFile->fixer
        ->beginChangeset();
      for ($i = $lastCommentToken + 1; $i < $next; $i++) {
        if ($tokens[$i]['line'] === $tokens[$next]['line']) {
          break;
        }
        $phpcsFile->fixer
          ->replaceToken($i, '');
      }
      $phpcsFile->fixer
        ->endChangeset();
    }
  }

  //end if
  return $lastCommentToken + 1;
}