public ISymbolForestNode AddOrGetExistingSymbolNode(ISymbol symbol, int origin, int location)
{
var hash = ComputeHashCode(symbol, origin, location);
ISymbolForestNode symbolNode = null;
if (_symbolNodes.TryGetValue(hash, out symbolNode))
return symbolNode;
symbolNode = new SymbolForestNode(symbol, origin, location);
_symbolNodes.Add(hash, symbolNode);
return symbolNode;
}
public ISymbolForestNode AddOrGetExistingSymbolNode(ISymbol symbol, int origin, int location)
{
var hash = ComputeHashCode(symbol, origin, location);
if (_symbolNodes.TryGetValue(hash, out ISymbolForestNode symbolNode))
{
return(symbolNode);
}
symbolNode = new SymbolForestNode(symbol, origin, location);
_symbolNodes.Add(hash, symbolNode);
return(symbolNode);
}
public ISymbolForestNode AddOrGetExistingSymbolNode(NonTerminal symbol, int origin, int location)
{
var key = (symbol, origin, location);
if (this._symbolNodes.TryGetValue(key, out var symbolNode))
{
return(symbolNode);
}
symbolNode = new SymbolForestNode(symbol, origin, location);
this._symbolNodes.Add(key, symbolNode);
return(symbolNode);
}