/**
* 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);
}