C#: Add Ide Connection library and server for the editor

This will be used for communicating between the Godot editor and external IDEs/editors, for things like opening files, triggering hot-reload and running the game with a debugger attached.

6 files changed, 30 insertions, 12 deletions

diff --git a/modules/mono/glue/Managed/Files/Dispatcher.cs b/modules/mono/glue/Managed/Files/Dispatcher.cs
new file mode 100644
index 0000000000..072e0f20ff
--- /dev/null
+++ b/modules/mono/glue/Managed/Files/Dispatcher.cs
@@ -0,0 +1,13 @@
+using System.Runtime.CompilerServices;
+
+namespace Godot
+{
+    public static class Dispatcher
+    {
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        private static extern GodotTaskScheduler godot_icall_DefaultGodotTaskScheduler();
+
+        public static GodotSynchronizationContext SynchronizationContext =>
+            godot_icall_DefaultGodotTaskScheduler().Context;
+    }
+}
diff --git a/modules/mono/glue/Managed/Files/GodotSynchronizationContext.cs b/modules/mono/glue/Managed/Files/GodotSynchronizationContext.cs
index e727781d63..4b5e3f8761 100644
--- a/modules/mono/glue/Managed/Files/GodotSynchronizationContext.cs
+++ b/modules/mono/glue/Managed/Files/GodotSynchronizationContext.cs
@@ -6,17 +6,16 @@ namespace Godot
 {
     public class GodotSynchronizationContext : SynchronizationContext
     {
-        private readonly BlockingCollection<KeyValuePair<SendOrPostCallback, object>> queue = new BlockingCollection<KeyValuePair<SendOrPostCallback, object>>();
+        private readonly BlockingCollection<KeyValuePair<SendOrPostCallback, object>> _queue = new BlockingCollection<KeyValuePair<SendOrPostCallback, object>>();
 
         public override void Post(SendOrPostCallback d, object state)
         {
-            queue.Add(new KeyValuePair<SendOrPostCallback, object>(d, state));
+            _queue.Add(new KeyValuePair<SendOrPostCallback, object>(d, state));
         }
 
         public void ExecutePendingContinuations()
         {
-            KeyValuePair<SendOrPostCallback, object> workItem;
-            while (queue.TryTake(out workItem))
+            while (_queue.TryTake(out var workItem))
             {
                 workItem.Key(workItem.Value);
             }
diff --git a/modules/mono/glue/Managed/Files/GodotTaskScheduler.cs b/modules/mono/glue/Managed/Files/GodotTaskScheduler.cs
index 9a40fef5a9..8eaeea50dc 100644
--- a/modules/mono/glue/Managed/Files/GodotTaskScheduler.cs
+++ b/modules/mono/glue/Managed/Files/GodotTaskScheduler.cs
@@ -8,7 +8,7 @@ namespace Godot
 {
     public class GodotTaskScheduler : TaskScheduler
     {
-        private GodotSynchronizationContext Context { get; set; }
+        internal GodotSynchronizationContext Context { get; }
         private readonly LinkedList<Task> _tasks = new LinkedList<Task>();
 
         public GodotTaskScheduler()
@@ -28,14 +28,10 @@ namespace Godot
         protected sealed override bool TryExecuteTaskInline(Task task, bool taskWasPreviouslyQueued)
         {
             if (SynchronizationContext.Current != Context)
-            {
                 return false;
-            }
 
             if (taskWasPreviouslyQueued)
-            {
                 TryDequeue(task);
-            }
 
             return TryExecuteTask(task);
         }
@@ -52,7 +48,8 @@ namespace Godot
         {
             lock (_tasks)
             {
-                return _tasks.ToArray();
+                foreach (Task task in _tasks)
+                    yield return task;
             }
         }
 
diff --git a/modules/mono/glue/Managed/Managed.csproj b/modules/mono/glue/Managed/Managed.csproj
index 61f738922b..ad55fe9539 100644
--- a/modules/mono/glue/Managed/Managed.csproj
+++ b/modules/mono/glue/Managed/Managed.csproj
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -37,4 +37,4 @@
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
-</Project>
+</Project>
\ No newline at end of file
diff --git a/modules/mono/glue/gd_glue.cpp b/modules/mono/glue/gd_glue.cpp
index 7c30092855..c44474ea53 100644
--- a/modules/mono/glue/gd_glue.cpp
+++ b/modules/mono/glue/gd_glue.cpp
@@ -211,6 +211,10 @@ MonoString *godot_icall_GD_var2str(MonoObject *p_var) {
 	return GDMonoMarshal::mono_string_from_godot(vars);
 }
 
+MonoObject *godot_icall_DefaultGodotTaskScheduler() {
+	return GDMonoUtils::mono_cache.task_scheduler_handle->get_target();
+}
+
 void godot_register_gd_icalls() {
 	mono_add_internal_call("Godot.GD::godot_icall_GD_bytes2var", (void *)godot_icall_GD_bytes2var);
 	mono_add_internal_call("Godot.GD::godot_icall_GD_convert", (void *)godot_icall_GD_convert);
@@ -234,6 +238,9 @@ void godot_register_gd_icalls() {
 	mono_add_internal_call("Godot.GD::godot_icall_GD_type_exists", (void *)godot_icall_GD_type_exists);
 	mono_add_internal_call("Godot.GD::godot_icall_GD_var2bytes", (void *)godot_icall_GD_var2bytes);
 	mono_add_internal_call("Godot.GD::godot_icall_GD_var2str", (void *)godot_icall_GD_var2str);
+
+	// Dispatcher
+	mono_add_internal_call("Godot.Dispatcher::godot_icall_DefaultGodotTaskScheduler", (void *)godot_icall_DefaultGodotTaskScheduler);
 }
 
 #endif // MONO_GLUE_ENABLED
diff --git a/modules/mono/glue/gd_glue.h b/modules/mono/glue/gd_glue.h
index d4e20e2887..a34c0bc50f 100644
--- a/modules/mono/glue/gd_glue.h
+++ b/modules/mono/glue/gd_glue.h
@@ -75,6 +75,8 @@ MonoArray *godot_icall_GD_var2bytes(MonoObject *p_var, MonoBoolean p_full_object
 
 MonoString *godot_icall_GD_var2str(MonoObject *p_var);
 
+MonoObject *godot_icall_DefaultGodotTaskScheduler();
+
 // Register internal calls
 
 void godot_register_gd_icalls();