Added a new pass to check for type references.

src/Generator/Driver.cs

@@ -88,6 +88,7 @@ namespace Cxxi
             passes.CleanUnit(Options);
             passes.SortDeclarations();
             passes.ResolveIncompleteDecls(TypeDatabase);
+            passes.CheckTypeReferences();
             passes.CheckFlagEnums();
 
             if (Transform != null)

src/Generator/Passes/CheckTypeReferencesPass.cs

@@ -0,0 +1,22 @@
+namespace Cxxi.Passes
+{
+    public class CheckTypeReferencesPass : TranslationUnitPass
+    {
+        TypeRefsVisitor typeRefs;
+
+        public override bool VisitTranslationUnit(TranslationUnit unit)
+        {
+            typeRefs = new TypeRefsVisitor();
+            return typeRefs.VisitTranslationUnit(unit);
+        }
+    }
+
+    public static class CheckTypeReferencesExtensions
+    {
+        public static void CheckTypeReferences(this PassBuilder builder)
+        {
+            var pass = new CheckTypeReferencesPass();
+            builder.AddPass(pass);
+        }
+    }
+}

src/Generator/Passes/CleanInvalidDeclNamesPass.cs

@@ -1,5 +1,4 @@
 using System;
-using System.Collections.Generic;
 using System.Linq;
 
 namespace Cxxi.Passes
@@ -7,19 +6,9 @@ namespace Cxxi.Passes
     public class CleanInvalidDeclNamesPass : TranslationUnitPass
     {
         private int uniqueName;
-        private TypeRefsVisitor typeRefs;
 
         public CleanInvalidDeclNamesPass()
         {
-            typeRefs = new TypeRefsVisitor();
-        }
-
-        public override bool VisitTranslationUnit(TranslationUnit unit)
-        {
-            typeRefs = new TypeRefsVisitor();
-            unit.TypeReferences = typeRefs;
-
-            return base.VisitTranslationUnit(unit);
         }
 
         string CheckName(string name)
@@ -39,7 +28,6 @@ namespace Cxxi.Passes
 
         public override bool VisitDeclaration(Declaration decl)
         {
-            typeRefs.Process(decl);
             decl.Name = CheckName(decl.Name);
 
             StringHelpers.CleanupText(ref decl.DebugText);