public bool FindErrorRecoveryState()
{
while (true) // pop states until one found that accepts error token
{
if (current_state.parser_table != null)
{
int errt;
if (current_state.parser_table.TryGetValue(errToken, out errt) &&
errt > 0) // shift
{
return(true);
}
}
state_stack.Pop();
value_stack.Pop();
location_stack.Pop();
if (state_stack.IsEmpty())
{
return(false);
}
else
{
current_state = state_stack.Top();
}
}
}
public bool FindErrorRecoveryState()
{
while (true) // pop states until one found that accepts error token
{
if (current_state.parser_table != null &&
current_state.parser_table.ContainsKey(errToken) &&
current_state.parser_table[errToken] > 0) // shift
{
return(true);
}
if (Trace)
{
Console.Error.WriteLine("Error: popping state {0}", state_stack.Top().num);
}
//System.Diagnostics.Trace.WriteLine(
// String.Format("Error: popping state {0}", state_stack.Top().num));
state_stack.Pop();
value_stack.Pop();
location_stack.Pop();
if (Trace)
{
DisplayStack();
}
if (state_stack.IsEmpty())
{
if (Trace)
{
Console.Error.Write("Aborting: didn't find a state that accepts error token");
}
//System.Diagnostics.Trace.WriteLine("Aborting: didn't find a state that accepts error token");
return(false);
}
else
{
current_state = state_stack.Top();
}
}
}