public object VisitGetExpr(Expr.Get expr)
{
var @object = Evaluate(expr.Object);
if (@object is LoxInstance loxInstance)
{
return(loxInstance.Get(expr.Name));
}
throw new RuntimeError(expr.Name, "Only instances have properties.");
}
private Expr Call()
{
var expr = Primary();
while (true)
{
if (Match(LEFT_PAREN))
{
expr = FinishCall(expr);
}
else if (Match(DOT))
{
var name = Consume(IDENTIFIER, "Expected property name after '.'.");
expr = new Expr.Get(expr, name);
}
else
{
break;
}
}
return(expr);
}
public string VisitGetExpr(Expr.Get expr)
{
return(Parenthesize2(".", expr.Object, expr.Name.Lexeme));
}
public object VisitGetExpr(Expr.Get expr)
{
Resolve(expr.Object);
return(null);
}