public bool Equals(Symbol other)
{
if (other == null)
{
return(false);
}
if (Tag != other.Tag)
{
return(false);
}
switch (Tag)
{
case SymbolTag.Atom: return(AsAtom == other.AsAtom);
case SymbolTag.Number: return(AsNumber == other.AsNumber);
case SymbolTag.String: return(AsString == other.AsString);
case SymbolTag.Quote: return(AsQuote == other.AsQuote);
case SymbolTag.Symbols: return(AsSymbols.SequenceEqual(other.AsSymbols));
default: throw new InexhausiveException();
}
}
public override int GetHashCode()
{
switch (Tag)
{
case SymbolTag.Atom: return(AsAtom.GetHashCode());
case SymbolTag.Number: return(AsNumber.GetHashCode());
case SymbolTag.String: return(AsString.GetHashCode());
case SymbolTag.Quote: return(AsQuote.GetHashCode());
case SymbolTag.Symbols: return(AsSymbols.Aggregate(0, (hash, symbol) => hash ^ symbol.GetHashCode()));
default: throw new InexhausiveException();
}
}
