1 files changed, 63 insertions, 26 deletions

diff --git a/Tizen.Runtime/Tizen.Runtime.Coreclr/AssemblyLoader.cs b/Tizen.Runtime/Tizen.Runtime.Coreclr/AssemblyLoader.cs
index cbb0095..35a8ddf 100755
--- a/Tizen.Runtime/Tizen.Runtime.Coreclr/AssemblyLoader.cs
+++ b/Tizen.Runtime/Tizen.Runtime.Coreclr/AssemblyLoader.cs
@@ -16,6 +16,7 @@
 
 using System;
 using System.IO;
+using System.Linq;
 using System.Reflection;
 using System.Runtime.Loader;
 using System.Collections.Generic;
@@ -24,9 +25,24 @@ namespace Tizen.Runtime.Coreclr
 {
     public class AssemblyLoader : AssemblyLoadContext
     {
+        private const string NativeAssemblyInfix = ".ni";
+
+        private const string DllAssemblySuffix = ".dll";
+
+        private const string NativeDllAssemblySuffix = NativeAssemblyInfix + DllAssemblySuffix;
+
+        private static readonly string[] s_suffixes = new string[] { NativeDllAssemblySuffix, DllAssemblySuffix };
+
         private SortedSet<string> _dllDirectories = new SortedSet<string>();
         private SortedSet<string> _nativeDirectories = new SortedSet<string>();
 
+        private HashSet<FileInfo> _dllCache = new HashSet<FileInfo>();
+
+        public AssemblyLoader()
+        {
+            AssemblyLoadContext.Default.Resolving += OnResolving;
+        }
+
         public IEnumerable<string> DllDirectories
         {
             get { return _dllDirectories; }
@@ -43,6 +59,16 @@ namespace Tizen.Runtime.Coreclr
             {
                 _dllDirectories.Add(directory);
                 _nativeDirectories.Add(directory);
+
+                foreach (var file in Directory.GetFiles(directory))
+                {
+                    var info = new FileInfo(file);
+
+                    if (info.Extension == DllAssemblySuffix)
+                    {
+                        _dllCache.Add(info);
+                    }
+                }
             }
         }
 
@@ -50,39 +76,30 @@ namespace Tizen.Runtime.Coreclr
         {
             _dllDirectories.Remove(directory);
             _nativeDirectories.Remove(directory);
+
+            _dllCache.RemoveWhere(x => x.DirectoryName == directory);
         }
 
-        protected override Assembly Load(AssemblyName assemblyName)
+        public Assembly LoadFromPath(string path)
         {
-            Assembly asm = null;
-
-            try
+            if (0 == string.Compare(path,  // strA
+                                    path.Length - NativeDllAssemblySuffix.Length,  // indexA
+                                    NativeAssemblyInfix,  // strB
+                                    0,  // indexB
+                                    NativeAssemblyInfix.Length,  // length
+                                    StringComparison.OrdinalIgnoreCase))  // options
             {
-                //asm = AssemblyLoadContext.Default.Load(assemblyName);
-                asm = AssemblyLoadContext.Default.LoadFromAssemblyName(assemblyName);
+                return LoadFromNativeImagePath(path, null);
             }
-            catch (Exception ex)
-                when (ex is FileNotFoundException ||
-                        ex is BadImageFormatException ||
-                        ex is FileLoadException)
+            else
             {
-                foreach (string dir in DllDirectories)
-                {
-                    FileInfo f = new FileInfo(Path.Combine(dir, $"{assemblyName.Name}.ni.dll"));
-                    if (File.Exists(f.FullName))
-                    {
-                        asm = LoadFromNativeImagePath(f.FullName, null);
-                        break;
-                    }
-                    f = new FileInfo(Path.Combine(dir, $"{assemblyName.Name}.dll"));
-                    if (File.Exists(f.FullName))
-                    {
-                        asm = LoadFromAssemblyPath(f.FullName);
-                        break;
-                    }
-                }
+                return LoadFromAssemblyPath(path);
             }
-            return asm;
+        }
+
+        protected override Assembly Load(AssemblyName assemblyName)
+        {
+            return Resolve(assemblyName);
         }
 
         protected override IntPtr LoadUnmanagedDll(string unmanagedDllName)
@@ -103,5 +120,25 @@ namespace Tizen.Runtime.Coreclr
 
             return native;
         }
+
+        private Assembly Resolve(AssemblyName assemblyName)
+        {
+            foreach (string suffix in s_suffixes)
+            {
+                var info = _dllCache.FirstOrDefault(x => x.Name == assemblyName.Name + suffix);
+
+                if (info != null)
+                {
+                    return LoadFromPath(info.FullName);
+                }
+            }
+
+            return null;
+        }
+
+        private Assembly OnResolving(AssemblyLoadContext context, AssemblyName assemblyName)
+        {
+            return Resolve(assemblyName);
+        }
     }
 }