public LR0Item(Production production, int position)
{
Production = production;
Position = position;
ID = instance_counter++;
}
private LRItem FindItem(ParserState state, Production production, int position)
{
foreach (LRItem item in state.Items)
if (item.Core.Production == production && item.Core.Position == position)
return item;
string msg = string.Format("Failed to find an LRItem in state {0} by production [{1}] and position {2}. ",
state, production.ToString(), position.ToString());
throw new CompilerException(msg);
}
public ProductionList ReduceProductions = new ProductionList(); //may be more than one, in case of conflict
internal ActionRecord(string key, ParserActionType type, ParserState newState, Production reduceProduction)
{
Key = key;
ActionType = type;
NewState = newState;
if (reduceProduction != null)
ReduceProductions.Add(reduceProduction);
}
private void CreateProductions()
{
_data.Productions.Clear();
LR0Item.instance_counter = 0;
foreach (NonTerminal nt in _data.NonTerminals)
{
nt.Productions.Clear();
BnfExpressionData allData = new BnfExpressionData();
allData.AddRange(nt.Rule.Data);
foreach (BnfTermList prodOperands in allData)
{
bool isInitial = (nt == _data.AugmentedRoot);
Production prod = new Production(isInitial, nt, prodOperands);
nt.Productions.Add(prod);
_data.Productions.Add(prod);
}
}
}