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);
}
/**
* Check if the next token matches the expected type and data. If it does, then consume and return it,
* otherwise throw an exception.
*
* @param int $type The expected token type
* @param null|string $data The expected token data or null
*
* @return Token
*
* @throws ParserException
*/
protected function expectToken($type, $data = null)
{
$token = $this->tokenQueue->peek();
if (!$this->checkToken($type, $data)) {
throw new ParserException($this->tokenQueue, sprintf("Expected token [%s, '%s']", Token::getTypeName($type), $data));
}
$this->tokenQueue->next();
return $token;
}
protected function assertToken($type, $data, Token $token)
{
$this->assertEquals($type, $token->getType(), sprintf('Expected token [%s, %s], found [%s, %s]', Token::getTypeName($type), $data, Token::getTypeName($token->getType()), $token->getData()));
$this->assertEquals($data, trim($token->getData()), sprintf('Expected token [%s, %s], found [%s, %s]', Token::getTypeName($type), $data, Token::getTypeName($token->getType()), $token->getData()));
}