void DefaultErrorStrategy::reportNoViableAlternative(Parser *recognizer, const NoViableAltException &e) {
TokenStream *tokens = recognizer->getTokenStream();
std::string input;
if (tokens != nullptr) {
if (e.getStartToken()->getType() == Token::EOF) {
input = "<EOF>";
} else {
input = tokens->getText(e.getStartToken(), e.getOffendingToken());
}
} else {
input = "<unknown input>";
}
std::string msg = "no viable alternative at input " + escapeWSAndQuote(input);
recognizer->notifyErrorListeners(e.getOffendingToken(), msg, std::make_exception_ptr(e));
}
