NET4: Script Caching

public ScriptNode LoadScript(string script_name) { if (!script_name.StartsWith(@"\")) { // relative script path if (active_script_node_ != null) script_name = Combine(active_script_node_.ScriptName, script_name); else script_name = @"\" + script_name; } // is the script already loaded ScriptNode script_node = loaded_script_nodes_.Find(script_nodex => script_nodex.ScriptName == script_name); if (script_node == null) // not loaded script_node = new ScriptNode(script_name); // evaluate a script node if (!script_node.IsLoaded) { // load the script, a syntax error will throw an exception script_node.Load(basicNoUIObj_, Fast); // add to the front of the loaded list loaded_script_nodes_.Insert(0, script_node); // update tree view with new status ScriptLoadedStatusChanged?.Invoke(script_name, true); while (loaded_script_nodes_.Count > max_loaded_scripts) { // remove the last (oldest loaded script node) var oldest_script_node = loaded_script_nodes_[loaded_script_nodes_.Count-1]; if (oldest_script_node.IsActive) break; loaded_script_nodes_.RemoveAt(loaded_script_nodes_.Count - 1); oldest_script_node.Unload(); // update tree view with new status ScriptLoadedStatusChanged?.Invoke(oldest_script_node.ScriptName, false); } } else if (script_node != loaded_script_nodes_[0]) { // move to the front of the loaded list loaded_script_nodes_.Remove(script_node); loaded_script_nodes_.Insert(0, script_node); } return script_node; }

public object EvaluateScript(ScriptNode script_node, object default_value = null) { // script is active ScriptNode last_active_script_node = active_script_node_; active_script_node_ = script_node; try { // a script run-time error will throw an exception return active_script_node_.Evaluate(default_value); } finally { // script is no longer active active_script_node_ = last_active_script_node; } }