private int panicRecover(
ParseStack stack,
Stack realStack,
ITokenStream stream,
ISyntaxErrorRequestor problemRequestor) {
// Remember the first token
int left = stream.getLookAhead().left;
int right = stream.getLookAhead().right;
// Dump the entire part
stack.dumpStackUntil(NodeTypes.part, NodeTypes.RECORD);
while (stack.getStackTop() != realStack.size() - 1) {
realStack.pop();
}
// Delete the input tokens until we can parse RECOVERY_SUCCESS tokens ahead
while (true) {
ParseStack trialStack = stack.createCopy();
if (trialStack.parseCheck(stream, RECOVERY_SUCCESS) == RECOVERY_SUCCESS) {
break;
}
stream.advanceLookAhead();
}
// Only report the panic error if we haven't reported too many already
if (errorsDetected < MAX_ERRORS) {
problemRequestor.panicPhrase(left, right);
}
// Panic recoveries do not create artificial nodes
return 0;
}
