Can't modify nodes using C#? #55

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1. tboby commented on Jul 11, 2023

   

   tboby

   on Jul 11, 2023

   Last edited by tboby

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   Hi!

   You're right, the interface has changed since then so that snippet doesn't work.

   I've updated it so it works again.

   Basically, most of the properties return read-only copies as F# has immutable data by default. There are four ways you can actually modify the data structure:

   1. SetTag which will look for the key and replace it, or add it if it isn't there
   2. AllChildren's setter, which takes a C# List and replaces all current children with it
   3. All's setter, which takes an F# List and replaces all current children with it it
   4. `AllArray', which returns a mutable array (but not resizable), or the setter which replaces all current children with it

   For "Leaf", both the Key and Value have setters. For "Node", the Key has a setter too.

               //Add is_triggered_only = true
               var leaf = new Leaf(KeyValueItem.NewKeyValueItem(Key.NewKey("is_triggered_only"), Value.NewBool(true), Operator.Equals), FSharpOption<range>.None);
               myEvent.SetTag(leaf.Key, Child.NewLeafC(leaf));
               // or
               // var newChildren = myEvent.AllChildren;
               // newChildren.Add(Leaf.Create(KeyValueItem.NewKeyValueItem(Key.NewKey("is_triggered_only"), Value.NewBool(true), Operator.Equals), range.Zero));
               // myEvent.AllChildren = newChildren;
   

   Hope that helps a little!
2. Nadav-Ruskin commented on Jul 13, 2023

   

   Nadav-Ruskin

   on Jul 13, 2023

   Last edited by Nadav-Ruskin

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   Thank you for the in-depth answer!

   Speaking of serializing, I have another question. I'm trying to modify a Crusader Kings III file programmatically and iteratively, and since the file is quite big I'd like to pickle the parsed data between runs. Is there a way to do so?

               var processed = CWTools.CSharp.Parsers.ProcessStatements("testevent.txt", "./testevent.txt", eventFile);
   
               var serialized_processed = JsonSerializer.Serialize(processed);  // <--- Fails here: 			System.NotSupportedException: 'F# discriminated union serialization is not supported. Consider authoring a custom converter for the type.'
               var deserialized_processed = JsonSerializer.Deserialize<Node>(serialized_processed);
               File.AppendAllText("./serialized_node.txt", serialized_processed);