public object Visit(Expr.Set _set)
{
Resolve(_set.value);
Resolve(_set.target);
return(null);
}
public object VisitSetExpr(Expr.Set expr)
{
var obj = Evaluate(expr.Obj);
if (obj is LoxInstance li)
{
var value = Evaluate(expr.Value);
li.Set(expr.Name, value);
return(value);
}
throw new RuntimeError(expr.Name, "Only instances have fields.");
}
public object VisitSetExpr(Expr.Set expr)
{
object obj = Evaluate(expr.obj);
if (obj is LoxInstance instance)
{
object value = Evaluate(expr.value);
instance[expr.name] = value;
return(value);
}
throw new RuntimeError(expr.name, "Only instances have fields.");
}
public object visitSetExpr(Expr.Set set)
{
Object _object = evaluate(set._object);
if (!(_object is LoxInstance) || (_object is LoxClass))
{
throw new Exceptions.RuntimeError(set.name, "Only instances have fields.");
}
Object value = evaluate(set.value);
((LoxInstance)_object).set(set.name, value);
return(value);
}
object Expr.IVisitor <object> .Visit(Expr.Set _set)
{
object target = Evaluate(_set.target);
if (!(target is LoxInstance))
{
throw new RuntimeError(_set.name, "Only instances have fields.");
}
object value = Evaluate(_set.value);
((LoxInstance)target).Set(_set.name, value);
return(value);
}
string Expr.IVisitor <string> .Visit(Expr.Set _set)
{
throw new NotImplementedException();
}
public object visitSetExpr(Expr.Set set)
{
resolve(set.value);
resolve(set._object);
return(null);
}
public object VisitSetExpr(Expr.Set expr)
{
Resolve(expr.value);
Resolve(expr.obj);
return(null);
}
public string visitSetExpr(Expr.Set set)
{
return("(= " + set._object.accept(this) + "." + set.name.lexeme + " " + set.value.accept(this) + ")");
}
public Void VisitSetExpr(Expr.Set expr)
{
Resolve(expr.Value);
Resolve(expr.Obj);
return(null);
}
public string VisitSetExpr(Expr.Set expr)
{
return($"({expr.obj.Accept(this)}{expr.name} <- {expr.value.Accept(this)})");
}