Reload script file after editing?

[MickDuprez]

Hi, search as I might I can't find any clear references on reloading a script in a running host application after making edits. Is there a method to load/reload a script after edits?

I've tried 'Execute' on the same file but it seems it's not replacing it as expected/hoped.
I would like end users to be able to create there own scripts and load/reload on the fly while testing them.

When I call the sample code below everything works fine and modules are imported as expected, I make a change to one of the imported files, rerun this code but the changes are not being processed.

  engine.Execute(new DocumentInfo("Test.js") { Category = ModuleCategory.Standard }, @"
  var Editor = App.DocumentManager.MdiActiveDocument.Editor;
  Editor.WriteMessage('Javascript Engine is loaded!');

  import * as Test from 'test.js';
  Test.test();
  Test.test2();
");

Am I missing something simple? Thanks for any ideas, cheers.
Mick

[MickDuprez]

It's always the way, you find the solution after asking the question...

This seems to be working for now, cheers.

            DocumentLoader.Default.DiscardCachedDocuments();
            GC.Collect();
            GC.WaitForPendingFinalizers();

solution found here: #187

Thanks

p.s.
There is also the DocumentLoader.CacheDocument Method that I need to look into for individual script file replacement, hth.

[MickDuprez]

hmm, CacheDocument is a no go at the moment, I'm getting an exception:
System.NullReferenceException: 'Object reference not set to an instance of an object.'
from the CacheDocument call. Digging into the exception gives no further clues.

  public void JSReloadScript()
          {
              var scriptsDir = Path.Combine(AppLoader.AppPath, "scripts");
              var scriptPath = scriptsDir + "\\jstest.js";
              string contents = File.ReadAllText(scriptPath);
              var docInfo = new DocumentInfo("jsctest.js");
              var strDoc = new StringDocument(docInfo, contents);
              DocumentLoader.Default.CacheDocument(strDoc, true);
          }

Any suggestions on how to 'reload' a script file from the 'engine' or is there a way to do this in JavaScript code run by the engine (hot reload)?

The DiscardCachedDocuments works fine for the moment but I can see this being a problem once I have whole applications with lots of script files/modules running within the script engine.

[ClearScriptLib]

Hi @MickDuprez,

I'm getting an exception: System.NullReferenceException: 'Object reference not set to an instance of an object.'

A cached document must have an absolute URI. If scriptPath is a full path, the following should work:

var docInfo = new DocumentInfo(new Uri(scriptPath));
var strDoc = new StringDocument(docInfo, contents);
DocumentLoader.Default.CacheDocument(strDoc, true);

ClearScript is throwing the wrong exception – and we'll fix that in the next release – but the URI issue is most likely the problem.

Good luck!

[MickDuprez]

Thanks for the quick response!
Yes, that fixed the exception problem (and I remember reading somewhere about the absolute Uri, my bad :) ) but it doesn't seem to be the solution to reloading scripts. I'll keep digging, thanks again.
cheers
Mick