/// <summary>
/// Creates a new LALR parser.
/// </summary>
/// <param name="tokenizer">A tokenizer.</param>
/// <param name="states">The LALR states.</param>
/// <param name="startState">The starting state.</param>
public LALRParser(IStringTokenizer tokenizer,
StateCollection states,
State startState,
SymbolCollection symbols)
{
this.tokenizer = tokenizer;
this.states = states;
this.startState = startState;
this.symbols = symbols;
storeTokens = StoreTokensMode.NoUserObject;
}
private SymbolCollection FindExpectedTokens()
{
SymbolCollection symbols = new SymbolCollection();
State state = stateStack.Peek();
foreach (Action action in state.Actions)
{
if ((action is ShiftAction) || (action is ReduceAction) ||
(action is AcceptAction))
{
symbols.Add(action.symbol);
}
}
return(symbols);
}
