public object VisitSetExpr(Expr.Set expr)
{
var @object = Evaluate(expr.Object);
if (!(@object is LoxInstance instance))
{
throw new RuntimeError(expr.Name, "Only instances have fields.");
}
var value = Evaluate(expr.Value);
instance.Set(expr.Name, value);
return(value);
}
public string VisitSetExpr(Expr.Set expr)
{
return(Parenthesize2("=", expr.Object, expr.Name.Lexeme, expr.Value));
}
public object VisitSetExpr(Expr.Set expr)
{
Resolve(expr.Value);
Resolve(expr.Object);
return(null);
}