Add special handling for SingleModelItem

libs/UIX.DecompXml/Mock/IrisExpression.cs

@@ -1,9 +1,12 @@
 using Microsoft.CodeAnalysis.CSharp;
 using Microsoft.CodeAnalysis.CSharp.Syntax;
 using Microsoft.Iris.Asm;
+using Microsoft.Iris.Asm.Models;
 using Microsoft.Iris.Markup;
 using System;
 using System.Collections.Generic;
+using System.Linq;
+using System.Text.RegularExpressions;
 using static Microsoft.CodeAnalysis.CSharp.SyntaxFactory;
 
 namespace Microsoft.Iris.DecompXml.Mock;
@@ -40,11 +43,30 @@ internal class IrisExpression
         if (TryMapPredefinedType(type, out var kind))
             return PredefinedType(Token(kind));
 
-        return IdentifierName(context.GetQualifiedName(type).ToString());
+        var typeName = context.GetQualifiedName(type);
+        
+        if (type.Name.StartsWith("SingletonModelItem"))
+        {
+            // Special handling for this weird wrapper type
+            var genericName = ParseGenericType(typeName);
+            var innerFullTypeName = genericName.TypeArgumentList.Arguments[0].ToString();
+
+            // Resolve namespace to prefix
+            var nsEndIndex = innerFullTypeName.LastIndexOf('.');
+            var innerTypeName = innerFullTypeName[(nsEndIndex + 1)..];
+            var ns = innerFullTypeName[..nsEndIndex];
+            
+            var innerType = context.ImportTables.TypeImports
+                .Where(t => t.Name == innerTypeName || t.AlternateName == innerTypeName)
+                .FirstOrDefault(t => (t.Owner as AssemblyLoadResult)?.Namespace == ns);
+
+            typeName = context.GetQualifiedName(innerType);
         }
 
-    public static IdentifierNameSyntax ToSyntax(SymbolReference symbolRef) =>
-        IdentifierName(symbolRef.Symbol);
+        return IdentifierName(typeName.ToString());
+    }
+
+    public static IdentifierNameSyntax ToSyntax(SymbolReference symbolRef) => IdentifierName(symbolRef.Symbol);
 
     public static ExpressionSyntax ToSyntax(object obj, TypeSchema type, uint offset, DecompileContext context)
     {
@@ -90,4 +112,22 @@ internal class IrisExpression
 
         return false;
     }
+
+    private static GenericNameSyntax ParseGenericType(QualifiedTypeName typeName)
+    {
+        Regex rxGeneric = new(@"([A-z_:]\w*)`(\d+)\[(.+)\]");
+        var genericMatch = rxGeneric.Match(typeName.TypeName);
+        if (!genericMatch.Success)
+            throw new ArgumentException("Invalid generic");
+
+        var unqualifiedTypeName = genericMatch.Groups[1].Value;
+        var typeArgCount = int.Parse(genericMatch.Groups[2].Value);
+        var typeArgNames = genericMatch.Groups[3].Value
+            .Split(',')
+            .Select(IdentifierName);
+
+        // TODO: Handle nested generics
+        var trimmedTypeName = $"{typeName.NamespacePrefix}:{unqualifiedTypeName}";
+        return GenericName(Identifier(trimmedTypeName), TypeArgumentList([.. typeArgNames]));
+    }
 }

libs/UIX.DecompXml/Mock/IrisObject.cs

@@ -3,6 +3,7 @@ using Microsoft.CodeAnalysis.CSharp.Syntax;
 using Microsoft.Iris.Asm;
 using Microsoft.Iris.Asm.Models;
 using Microsoft.Iris.Markup;
+using System.Collections.Generic;
 using System.Linq;
 
 namespace Microsoft.Iris.DecompXml.Mock;
@@ -52,7 +53,7 @@ internal record IrisObject(object Object, TypeSchema Type)
 
         if (expr is MemberAccessExpressionSyntax memberAccessExpression)
         {
-            // TODO: Handle member access on instance methods
+            // TODO: Handle member access on instances
             try
             {
                 var sourceExpr = (IdentifierNameSyntax)memberAccessExpression.Expression;
@@ -90,6 +91,35 @@ internal record IrisObject(object Object, TypeSchema Type)
                 _ => throw new System.NotImplementedException(),
             };
         }
+        else if (expr is InvocationExpressionSyntax invocationExpression)
+        {
+            // TODO: Handle invocation of instance methods
+            try
+            {
+                var sourceExpr = invocationExpression.Expression;
+                
+                List<NameSyntax> names = [];
+                while (sourceExpr is MemberAccessExpressionSyntax innerSourceExpr)
+                {
+                    names.Add(innerSourceExpr.Name);
+                    sourceExpr = innerSourceExpr.Expression;
+                }
+
+                var sourceTypeName = QualifiedTypeName.Parse(sourceExpr.ToString());
+                var sourceType = ctx.GetImportedType(sourceTypeName);
+
+                var memberName = names[^1].ToString();
+
+                // Try to disambiguate overloads using number of parameters
+                var parameterCount = invocationExpression.ArgumentList.Arguments.Count;
+
+                var method = sourceType.Methods.FirstOrDefault(
+                    m => m.Name == memberName && m.ParameterTypes.Length == parameterCount);
+
+                return method?.ReturnType;
+            }
+            catch { }
+        }
 
         return null;
     }

test/NOWPLAYINGLAND_decomp.uix

@@ -5,7 +5,7 @@
       <Boolean Name="ShowZunePassTracks" Boolean="true" />
     </Properties>
     <Locals>
-      <zuneUI:TransportControls Name="TransportControls" TransportControls="{zuneUI:SingletonModelItem`1[ZuneUI.TransportControls].Instance}" />
+      <zuneUI:TransportControls Name="TransportControls" TransportControls="{zuneUI:TransportControls.Instance}" />
       <zuneUI:SignIn Name="SignIn" SignIn="{zuneUI:SignIn.Instance}" />
     </Locals>
     <Scripts>
@@ -55,7 +55,7 @@ bool IsQuickMix()
     </Properties>
     <Locals>
       <Window Name="Window" />
-      <zuneUI:TransportControls Name="TransportControls" TransportControls="{zuneUI:SingletonModelItem`1[ZuneUI.TransportControls].Instance}" />
+      <zuneUI:TransportControls Name="TransportControls" TransportControls="{zuneUI:TransportControls.Instance}" />
       <SelectionManager Name="SelectionManager" />
       <contentList:NavigateIntoIndexRequest Name="NavigateIntoArgs" />
       <nowPlayingLand:NowPlayingListModel Name="NowPlayingListModel" Page="{Page}" />
@@ -126,8 +126,8 @@ UI.CreateInterestOnFocus = false;
 ShowMPContent.Value = nowPlayingLand:NowPlayingPersistentState.ShowZunePassTracks;
 ]]></Script>
       <Script><![CDATA[
-[DeclareTrigger(zuneUI:SingletonModelItem`1[ZuneUI.TransportControls].Instance.CurrentTrack)]
-CurrentTrack = #zuneUI:SingletonModelItem`1[ZuneUI.TransportControls].Instance.CurrentTrack #;
+[DeclareTrigger(zuneUI:TransportControls.Instance.CurrentTrack)]
+CurrentTrack = #zuneUI:TransportControls.Instance.CurrentTrack #;
 ]]></Script>
       <Script><![CDATA[
 [DeclareTrigger(TransportControls.Playing), DeclareTrigger(TransportControls.PlayingVideo), DeclareTrigger(Page.SlideShowState.Play), DeclareTrigger(MiniMode.InCompactMode), DeclareTrigger(MiniMode.InPopupMode), DeclareTrigger(Window.WindowState)]
@@ -272,7 +272,7 @@ ActionContainer.Visible = #SaveAsPlaylistButton.Visible # || #ShowMPContentCheck
 ]]></Script>
       <Script><![CDATA[
 [DeclareTrigger(CurrentlyPlayingTrackMixAvailability.Available)]
-object track = zuneUI:SingletonModelItem`1[ZuneUI.TransportControls].Instance.CurrentTrack;
+object track = zuneUI:TransportControls.Instance.CurrentTrack;
 if ((Page.ShowMixOnEntry && track != null) && (Page.InitialPlaybackID == track.PlaybackID) && #CurrentlyPlayingTrackMixAvailability.Available #)
 {
     CurrentlyPlayingTrackMixAvailability.UpdateMixSeed.Invoke();
@@ -620,7 +620,7 @@ bool IsQuickMix()
     </Properties>
     <Locals>
       <Window Name="Window" />
-      <zuneUI:TransportControls Name="TransportControls" TransportControls="{zuneUI:SingletonModelItem`1[ZuneUI.TransportControls].Instance}" />
+      <zuneUI:TransportControls Name="TransportControls" TransportControls="{zuneUI:TransportControls.Instance}" />
       <nonClientControls:WindowState Name="WindowState" />
       <iris:Command Name="ZoomScale0" Description="{zuneUI:Shell.LoadString(zuneUI:StringId.IDS_VIDEO_ZOOM_FULL)}" />
       <iris:Command Name="ZoomScale1" Description="{zuneUI:Shell.LoadString(zuneUI:StringId.IDS_VIDEO_ZOOM_NONE)}" />
@@ -678,7 +678,7 @@ if (playingVideo)
             ((float)(wndWidth)) / ((float)(naturalWidth));
             object scaleY = (float)(wndHeight) / (float)(naturalHeight);
             ((float)(wndHeight)) / ((float)(naturalHeight));
-            object scale = system:Math.Min(scaleX, scaleY);
+            int scale = system:Math.Min(scaleX, scaleY);
             maxVideoSizeX = #TransportControls.ZoomScaleFactor # * naturalWidth;
             maxVideoSizeY = TransportControls.ZoomScaleFactor * naturalHeight;
             if (maxVideoSizeY + 50 > wndHeight || maxVideoSizeX + 50 > wndWidth)
@@ -875,7 +875,7 @@ else
 {
     SelectionManager selectionManager = (SelectionManager)value;
     object insertAt = InsertIndex.Value;
-    zuneUI:SingletonModelItem`1[ZuneUI.TransportControls].Instance.ReorderNowPlaying(selectionManager.SelectedIndices, insertAt);
+    zuneUI:TransportControls.Instance.ReorderNowPlaying(selectionManager.SelectedIndices, insertAt);
 }
 ]]></Script>
     </Scripts>
@@ -936,8 +936,8 @@ else
     </Properties>
     <Scripts>
       <Script><![CDATA[
-[DeclareTrigger(zuneUI:SingletonModelItem`1[ZuneUI.TransportControls].Instance.ErrorCount)]
-ErrorCode = zuneUI:SingletonModelItem`1[ZuneUI.TransportControls].Instance.GetLibraryErrorCode(Model);
+[DeclareTrigger(zuneUI:TransportControls.Instance.ErrorCount)]
+ErrorCode = zuneUI:TransportControls.Instance.GetLibraryErrorCode(Model);
 ]]></Script>
       <Script><![CDATA[
 [DeclareTrigger(RowModel.IsNowPlaying)]
@@ -996,8 +996,8 @@ SignInButton.Visible = #RowModel.ButtonState #.ChosenValue # == "SignIn";
 Upsell.Visible = util:FeatureEnablement.IsFeatureEnabled(zuneDBApi:Features.eSubscription) && RowModel.ButtonState.ChosenValue == "Upsell";
 ]]></Script>
       <Script><![CDATA[
-[DeclareTrigger(zuneUI:SingletonModelItem`1[ZuneUI.TransportControls].Instance.CurrentTrack)]
-RowModel.IsNowPlaying = Model == #zuneUI:SingletonModelItem`1[ZuneUI.TransportControls].Instance.CurrentTrack #;
+[DeclareTrigger(zuneUI:TransportControls.Instance.CurrentTrack)]
+RowModel.IsNowPlaying = Model == #zuneUI:TransportControls.Instance.CurrentTrack #;
 ]]></Script>
       <Script><![CDATA[
 [DeclareTrigger(RowModel.IsNowPlaying), DeclareTrigger(RowModel.ForceNonMarketplace)]
@@ -1319,8 +1319,8 @@ if (ListModel.SelectionManager != null && ListModel.SelectionManager.IsSelected(
     </Locals>
     <Scripts>
       <Script><![CDATA[
-[DeclareTrigger(zuneUI:SingletonModelItem`1[ZuneUI.TransportControls].Instance.CurrentTrack)]
-object track = #zuneUI:SingletonModelItem`1[ZuneUI.TransportControls].Instance.CurrentTrack #;
+[DeclareTrigger(zuneUI:TransportControls.Instance.CurrentTrack)]
+object track = #zuneUI:TransportControls.Instance.CurrentTrack #;
 if (LibraryAlbumInfo != null)
 {
     Class.DisposeOwnedObject(LibraryAlbumInfo);
@@ -1513,7 +1513,7 @@ if (RotateInfo.Enabled)
 [DeclareTrigger(NowPlayingBackgroundHelper.Visible)]
 MPTrackQuery.Enabled = false;
 MPTrackQuery.Id = null;
-object currentTrack = zuneUI:SingletonModelItem`1[ZuneUI.TransportControls].Instance.CurrentTrack;
+object currentTrack = zuneUI:TransportControls.Instance.CurrentTrack;
 if (#NowPlayingBackgroundHelper.Visible # && NowPlayingBackgroundHelper.Visible || !currentTrack.IsInVisibleCollection && util:FeatureEnablement.IsFeatureEnabled(zuneDBApi:Features.eMusic))
 {
     MPTrackQuery.Id = TrackId.ToString();
@@ -1530,7 +1530,7 @@ ArtistQuery.Enabled = false;
 ArtistQuery.Id = null;
 TopListenersQuery.Enabled = false;
 TopListenersQuery.ArtistId = null;
-object currentTrack = zuneUI:SingletonModelItem`1[ZuneUI.TransportControls].Instance.CurrentTrack;
+object currentTrack = zuneUI:TransportControls.Instance.CurrentTrack;
 if (((!zuneUI:GuidHelper.IsEmpty(ArtistId) && #NowPlayingBackgroundHelper.Visible # && util:FeatureEnablement.IsFeatureEnabled(zuneDBApi:Features.eMusic) && configuration:ClientConfiguration.Playback.ShowNowPlayingClipAnimations) && (iris:Application.RenderingQuality == iris:RenderingQuality.MaxQuality)) && (currentTrack != null) && currentTrack.IsMusic)
 {
     ArtistPhotosQuery.Id = ArtistId.ToString();