public object VisitGetExpr(GetExpr expr)
{
var obj = Evaluate(expr.Object);
if (obj is LoxInstance)
{
return(((LoxInstance)obj).Get(expr.Name));
}
throw new RuntimeError(expr.Name, "Only instances have properties.");
}
private Expr Call()
{
var expr = Primary();
while (true)
{
if (Match(TokenType.LeftParen))
{
expr = FinishCall(expr);
}
else if (Match(TokenType.Dot))
{
var name = Consume(TokenType.Identifier, "Expected property name after '.'.");
expr = new GetExpr(expr, name);
}
else
{
break;
}
}
return(expr);
}
public void VisitGetExpr(GetExpr expr)
{
Resolve(expr.Object);
}
public string VisitGetExpr(GetExpr expr)
{
throw new System.NotImplementedException();
}