PHP Token::isWhitespace方法代码示例

 /**
  * Removes the token if it is single line whitespace.
  *
  * @param Token $token
  */
 private function removeWhitespaceToken(Token $token)
 {
     if ($token->isWhitespace(" \t")) {
         $token->clear();
     }
 }

 /**
  * If given token is a single line whitespace then fix it to be a single space.
  *
  * @param Token $token
  */
 private function fixWhitespace(Token $token)
 {
     if ($token->isWhitespace(" \t")) {
         $token->setContent(' ');
     }
 }

 private function fixWhitespace(Token $token)
 {
     if ($token->isWhitespace() && !$token->isWhitespace(" \t")) {
         $token->setContent(rtrim($token->getContent()) . ' ');
     }
 }

 /**
  * Calculate the trailing whitespace no_tab_indentation.
  *
  * What we're doing here is grabbing everything after the final newline.
  *
  * @param Token $token
  *
  * @return string
  */
 public static function calculateTrailingWhitespaceIndent(Token $token)
 {
     if (!$token->isWhitespace()) {
         throw new \InvalidArgumentException(sprintf('The given token must be whitespace, got "%s".', $token->getName()));
     }
     return ltrim(strrchr(str_replace(array("\r\n", "\r"), "\n", $token->getContent()), 10), "\n");
 }

 /**
  * Find a sequence of meaningful tokens and returns the array of their locations.
  *
  * @param array      $sequence      an array of tokens (same format used by getNextTokenOfKind)
  * @param int        $start         start index, defaulting to the start of the file
  * @param int        $end           end index, defaulting to the end of the file
  * @param bool|array $caseSensitive global case sensitiveness or an array of booleans, whose keys should match
  *                                  the ones used in $others. If any is missing, the default case-sensitive
  *                                  comparison is used
  *
  * @return array|null an array containing the tokens matching the sequence elements, indexed by their position
  */
 public function findSequence(array $sequence, $start = 0, $end = null, $caseSensitive = true)
 {
     $sequenceCount = count($sequence);
     if (0 === $sequenceCount) {
         throw new \InvalidArgumentException('Invalid sequence.');
     }
     // $end defaults to the end of the collection
     $end = null === $end ? count($this) - 1 : min($end, count($this) - 1);
     if ($start + $sequenceCount - 1 > $end) {
         return;
     }
     // make sure the sequence content is "meaningful"
     foreach ($sequence as $key => $token) {
         // if not a Token instance already, we convert it to verify the meaningfulness
         if (!$token instanceof Token) {
             if (is_array($token) && !isset($token[1])) {
                 // fake some content as it is required by the Token constructor,
                 // although optional for search purposes
                 $token[1] = '';
             }
             $token = new Token($token);
         }
         if ($token->isWhitespace() || $token->isComment() || $token->isEmpty()) {
             throw new \InvalidArgumentException(sprintf('Non-meaningful token at position: %s.', $key));
         }
     }
     // remove the first token from the sequence, so we can freely iterate through the sequence after a match to
     // the first one is found
     $key = key($sequence);
     $firstCs = Token::isKeyCaseSensitive($caseSensitive, $key);
     $firstToken = $sequence[$key];
     unset($sequence[$key]);
     // begin searching for the first token in the sequence (start included)
     $index = $start - 1;
     while (null !== $index && $index <= $end) {
         $index = $this->getNextTokenOfKind($index, array($firstToken), $firstCs);
         // ensure we found a match and didn't get past the end index
         if (null === $index || $index > $end) {
             return;
         }
         // initialise the result array with the current index
         $result = array($index => $this[$index]);
         // advance cursor to the current position
         $currIdx = $index;
         // iterate through the remaining tokens in the sequence
         foreach ($sequence as $key => $token) {
             $currIdx = $this->getNextMeaningfulToken($currIdx);
             // ensure we didn't go too far
             if (null === $currIdx || $currIdx > $end) {
                 return;
             }
             if (!$this[$currIdx]->equals($token, Token::isKeyCaseSensitive($caseSensitive, $key))) {
                 // not a match, restart the outer loop
                 continue 2;
             }
             // append index to the result array
             $result[$currIdx] = $this[$currIdx];
         }
         // do we have a complete match?
         // hint: $result is bigger than $sequence since the first token has been removed from the latter
         if (count($sequence) < count($result)) {
             return $result;
         }
     }
 }

 /**
  * Remove spaces from token at a given index.
  *
  * @param Token $token
  */
 private function removeSpaceAroundToken(Token $token)
 {
     if ($token->isWhitespace() && false === strpos($token->getContent(), "\n")) {
         $token->clear();
     }
 }