public void VisitSuperExpr(SuperExpr expr)
{
if (currentClass == ClassType.None)
{
Lox.Error(expr.Keyword, "Cannot use 'super' outside of class.");
}
else if (currentClass == ClassType.Class)
{
Lox.Error(expr.Keyword, "Cannot use 'super' in a class with no superclass.");
}
ResolveLocal(expr, expr.Keyword);
}
public object VisitSuperExpr(SuperExpr expr)
{
int distance = locals[expr];
var superClass = (LoxClass)environment.GetAt(distance, "super");
var obj = (LoxInstance)environment.GetAt(distance - 1, "this");
var method = superClass.FindMethod(obj, expr.Method.Lexeme);
if (method == null)
{
throw new RuntimeError(expr.Method, "Undefined property '" + expr.Method.Lexeme + "'.");
}
return(method);
}
public string VisitSuperExpr(SuperExpr expr)
{
throw new System.NotImplementedException();
}
