Esempio n. 1
0
 /**
  * Check if the next token matches the expected type and data. If it does, then consume it, otherwise
  * return false.
  *
  * @param int         $type The expected token type
  * @param null|string $data The expected token data or null
  *
  * @return boolean|Token
  */
 protected function checkAndExpectToken($type, $data = null)
 {
     if ($this->checkToken($type, $data)) {
         $token = $this->tokenQueue->peek();
         $this->tokenQueue->next();
         return $token;
     }
     return false;
 }
 protected function assertTokens($tokens, TokenQueue $queue)
 {
     $queue->reset();
     $it = new \ArrayIterator($tokens);
     $token = $queue->peek();
     while ($it->valid()) {
         $expectedToken = $it->current();
         $this->assertFalse($queue->isEof(), 'There is no more tokens, expected = ' . $expectedToken[1]);
         $this->assertToken($expectedToken[0], $expectedToken[1], $token);
         $token = $queue->next();
         $it->next();
     }
     $this->assertTrue($queue->isEof(), 'There are more unexpected tokens.');
 }
 public function __construct(TokenQueue $queue, $msg)
 {
     $token = $queue->peek();
     $msg = sprintf("PARSER ERROR: %s. Current token is [%s, '%s'] at line %s, column %s", $msg, GenericToken::getTypeName($token->getType()), $token->getData(), $token->getLine(), $token->getRow());
     // construct a lookup of the next tokens
     $lookup = '';
     for ($i = 1; $i <= 5; $i++) {
         if ($queue->isEof()) {
             break;
         }
         $token = $queue->get();
         $lookup .= $token->getData() . ' ';
     }
     $msg .= "\nBuffer lookup: \"{$lookup}\"";
     parent::__construct($msg);
 }