private void CreateTable()
{
List <LalrState> stateList = new List <LalrState>();
mTable = new LalrTable(stateList);
for (int i = 0; i < mStates.Count; i++)
{
var actions = new Dictionary <Symbol, ReadOnlyCollection <LalrAction> >();
var tempActions = new Dictionary <Symbol, List <LalrAction> >();
var st = new LalrState(actions);
stateList.Add(st);
var currentItem = mStates[i].Closure(mDatabase);
foreach (var item in currentItem)
{
if (!item.AtEnd && item.CurrentSymbol is TerminalSymbol)
{
if (!tempActions.ContainsKey(item.CurrentSymbol))
{
tempActions[item.CurrentSymbol] = new List <LalrAction>();
}
if (tempActions[item.CurrentSymbol].Any(a => a is LalrShift))
{
continue;
}
tempActions[item.CurrentSymbol].Add(new LalrShift(mRecordedGotos[Tuple.Create(i, item.CurrentSymbol)], mTable));
}
else if (item.AtEnd && item.Production.Head == NonterminalSymbol.StartingSymbol)
{
if (!tempActions.ContainsKey(TerminalSymbol.Eof))
{
tempActions[TerminalSymbol.Eof] = new List <LalrAction>();
}
tempActions[TerminalSymbol.Eof].Add(new LalrAccept());
}
else if (item.AtEnd)
{
if (!tempActions.ContainsKey(item.Lookahead))
{
tempActions[item.Lookahead] = new List <LalrAction>();
}
if (tempActions[item.Lookahead].Any(a => a is LalrReduce && ((LalrReduce)a).Production == item.Production))
{
continue;
}
tempActions[item.Lookahead].Add(new LalrReduce(item.Production));
}
else
{
if (tempActions.ContainsKey(item.CurrentSymbol))
{
continue;
}
tempActions[item.CurrentSymbol] = new List <LalrAction>();
tempActions[item.CurrentSymbol].Add(new LalrGoto(mRecordedGotos[Tuple.Create(i, item.CurrentSymbol)], mTable));
}
}
foreach (var act in tempActions)
{
actions.Add(act.Key, act.Value.AsReadOnly());
}
}
}
public LalrShift(int stateIndex, LalrTable table)
{
this.StateIndex = stateIndex;
this.Table = table;
}