class FunctionTriggerErrorSniff in Coder 8.3

Checks that the trigger_error deprecation text message adheres to standards.

@category PHP @package PHP_CodeSniffer @link http://pear.php.net/package/PHP_CodeSniffer

Hierarchy

• class \Drupal\Sniffs\Semantics\FunctionCall implements \PHP_CodeSniffer\Sniffs\Sniff
  • class \Drupal\Sniffs\Semantics\FunctionTriggerErrorSniff

File

coder_sniffer/Drupal/Sniffs/Semantics/FunctionTriggerErrorSniff.php, line 21

Namespace

Drupal\Sniffs\Semantics

class FunctionTriggerErrorSniff extends FunctionCall {

  /**
   * Returns an array of function names this test wants to listen for.
   *
   * @return array<string>
   */
  public function registerFunctionNames() {
    return [
      'trigger_error',
    ];
  }

  //end registerFunctionNames()

  /**
   * Processes this function call.
   *
   * @param \PHP_CodeSniffer\Files\File $phpcsFile    The file being scanned.
   * @param int                         $stackPtr     The position of the function call in
   *                                                  the stack.
   * @param int                         $openBracket  The position of the opening
   *                                                  parenthesis in the stack.
   * @param int                         $closeBracket The position of the closing
   *                                                  parenthesis in the stack.
   *
   * @return void
   */
  public function processFunctionCall(file $phpcsFile, $stackPtr, $openBracket, $closeBracket) {
    $tokens = $phpcsFile
      ->getTokens();

    // If no second argument then quit.
    if ($this
      ->getArgument(2) === false) {
      return;
    }

    // Only check deprecation messages.
    if (strcasecmp($tokens[$this
      ->getArgument(2)['start']]['content'], 'E_USER_DEPRECATED') !== 0) {
      return;
    }

    // Get the first argument passed to trigger_error().
    $argument = $this
      ->getArgument(1);

    // Extract the message text to check. If if it formed using sprintf()
    // then find the single overall string using ->findNext.
    if ($tokens[$argument['start']]['code'] === T_STRING && strcasecmp($tokens[$argument['start']]['content'], 'sprintf') === 0) {
      $messagePosition = $phpcsFile
        ->findNext(T_CONSTANT_ENCAPSED_STRING, $argument['start']);

      // Remove the quotes using substr, because trim would take multiple
      // quotes away and possibly not report a faulty message.
      $messageText = substr($tokens[$messagePosition]['content'], 1, $tokens[$messagePosition]['length'] - 2);
    }
    else {
      $messageParts = [];

      // If not sprintf() then extract and store all the items except
      // whitespace, concatenation operators and comma. This will give all
      // real content such as concatenated strings and constants.
      for ($i = $argument['start']; $i <= $argument['end']; $i++) {
        if (in_array($tokens[$i]['code'], [
          T_WHITESPACE,
          T_STRING_CONCAT,
          T_COMMA,
        ]) === false) {

          // For strings, remove the quotes using substr not trim.
          // Simple strings are T_CONSTANT_ENCAPSED_STRING and strings
          // with variable interpolation are T_DOUBLE_QUOTED_STRING.
          if ($tokens[$i]['code'] === T_CONSTANT_ENCAPSED_STRING || $tokens[$i]['code'] === T_DOUBLE_QUOTED_STRING) {
            $messageParts[] = substr($tokens[$i]['content'], 1, $tokens[$i]['length'] - 2);
          }
          else {
            $messageParts[] = $tokens[$i]['content'];
          }
        }
      }
      $messageText = implode(' ', $messageParts);
    }

    //end if

    // Check if there is a @deprecated tag in an associated doc comment
    // block. If the @trigger_error was level 0 (entire class or file) then
    // try to find a doc comment after the trigger_error also at level 0.
    // If the @trigger_error was at level > 0 it means it is inside a
    // function so search backwards for the function comment block, which
    // will be at one level lower.
    $strictStandard = false;
    $triggerErrorLevel = $tokens[$stackPtr]['level'];
    if ($triggerErrorLevel === 0) {
      $requiredLevel = 0;
      $block = $phpcsFile
        ->findNext(T_DOC_COMMENT_OPEN_TAG, $argument['start']);
    }
    else {
      $requiredLevel = $triggerErrorLevel - 1;
      $block = $phpcsFile
        ->findPrevious(T_DOC_COMMENT_OPEN_TAG, $argument['start']);
    }
    if (isset($tokens[$block]['level']) === true && $tokens[$block]['level'] === $requiredLevel && isset($tokens[$block]['comment_tags']) === true) {
      foreach ($tokens[$block]['comment_tags'] as $tag) {
        $strictStandard = $strictStandard || strtolower($tokens[$tag]['content']) === '@deprecated';
      }
    }

    // The string standard format for @trigger_error() is:
    // %thing% is deprecated in %deprecation-version% and is removed in
    // %removal-version%. %extra-info%. See %cr-link%
    // For the 'relaxed' standard the 'and is removed in' can be replaced
    // with any text.
    $matches = [];
    if ($strictStandard === true) {

      // Use (?U) 'ungreedy' before the version so that only the text up
      // to the first period followed by a space is matched, as there may
      // be more than one sentence in the extra-info part.
      preg_match('/(.+) is deprecated in (\\S+) (and is removed from) (?U)(.+)\\. (.*)\\. See (\\S+)$/', $messageText, $matches);
      $sniff = 'TriggerErrorTextLayoutStrict';
      $error = "The trigger_error message '%s' does not match the strict standard format: %%thing%% is deprecated in %%deprecation-version%% and is removed from %%removal-version%%. %%extra-info%%. See %%cr-link%%";
    }
    else {

      // Allow %extra-info% to be empty as this is optional in the relaxed
      // version.
      preg_match('/(.+) is deprecated in (\\S+) (?U)(.+) (\\S+)\\. (.*)See (\\S+)$/', $messageText, $matches);
      $sniff = 'TriggerErrorTextLayoutRelaxed';
      $error = "The trigger_error message '%s' does not match the relaxed standard format: %%thing%% is deprecated in %%deprecation-version%% any free text %%removal-version%%. %%extra-info%%. See %%cr-link%%";
    }

    // There should be 7 items in $matches: 0 is full text, 1 = thing,
    // 2 = deprecation-version, 3 = middle text, 4 = removal-version,
    // 5 = extra-info, 6 = cr-link.
    if (count($matches) !== 7) {
      $phpcsFile
        ->addError($error, $argument['start'], $sniff, [
        $messageText,
      ]);
    }
    else {

      // The text follows the basic layout. Now check that the version
      // matches drupal:n.n.n or project:n.x-n.n. The text must be all
      // lower case and numbers can be one or two digits.
      foreach ([
        'deprecation-version' => $matches[2],
        'removal-version' => $matches[4],
      ] as $name => $version) {
        if (preg_match('/^drupal:\\d{1,2}\\.\\d{1,2}\\.\\d{1,2}$/', $version) === 0 && preg_match('/^[a-z\\d_]+:\\d{1,2}\\.x\\-\\d{1,2}\\.\\d{1,2}$/', $version) === 0) {
          $error = "The %s '%s' does not match the lower-case machine-name standard: drupal:n.n.n or project:n.x-n.n";
          $phpcsFile
            ->addWarning($error, $argument['start'], 'TriggerErrorVersion', [
            $name,
            $version,
          ]);
        }
      }

      // Check the 'See' link.
      $crLink = $matches[6];

      // Allow for the alternative 'node' or 'project/aaa/issues' format.
      preg_match('[^http(s*)://www.drupal.org/(node|project/\\w+/issues)/(\\d+)(\\.*)$]', $crLink, $crMatches);

      // If cr_matches[4] is not blank it means that the url is correct
      // but it ends with a period. As this can be a common mistake give a
      // specific message to assist in fixing.
      if (isset($crMatches[4]) === true && empty($crMatches[4]) === false) {
        $error = "The url '%s' should not end with a period.";
        $phpcsFile
          ->addWarning($error, $argument['start'], 'TriggerErrorPeriodAfterSeeUrl', [
          $crLink,
        ]);
      }
      else {
        if (empty($crMatches) === true) {
          $error = "The url '%s' does not match the standard: http(s)://www.drupal.org/node/n or http(s)://www.drupal.org/project/aaa/issues/n";
          $phpcsFile
            ->addWarning($error, $argument['start'], 'TriggerErrorSeeUrlFormat', [
            $crLink,
          ]);
        }
      }
    }

    //end if
  }

}

Members

Name	Modifiers	Type	Description	Overrides
FunctionCall::$arguments	protected	property	Internal cache to save the calculated arguments of the function call.
FunctionCall::$closeBracket	protected	property	The token position of the closing bracket of the function call.
FunctionCall::$functionCall	protected	property	The token position of the function call.
FunctionCall::$includeMethodCalls	protected	property	Whether method invocations with the same function name should be processed, too.	1
FunctionCall::$openBracket	protected	property	The token position of the opening bracket of the function call.
FunctionCall::$phpcsFile	protected	property	The currently processed file.
FunctionCall::getArgument	public	function	Returns start and end token for a given argument number.
FunctionCall::isFunctionCall	protected	function	Checks if this is a function call.
FunctionCall::process	public	function	Processes this test, when one of its tokens is encountered.	2
FunctionCall::register	public	function	Returns an array of tokens this test wants to listen for.
FunctionTriggerErrorSniff::processFunctionCall	public	function	Processes this function call.
FunctionTriggerErrorSniff::registerFunctionNames	public	function	Returns an array of function names this test wants to listen for.