refactored icalls using icall helper

src/Helpers/ICallHelper.cs

@@ -0,0 +1,45 @@
+#if CPP
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.InteropServices;
+using System.Text;
+using System.Reflection;
+
+namespace Explorer.Helpers
+{
+    public static class ICallHelper
+    {
+        private static readonly Dictionary<string, Delegate> iCallCache = new Dictionary<string, Delegate>();
+
+        public static T GetICall<T>(string iCallName) where T : Delegate
+        {
+            if (iCallCache.ContainsKey(iCallName))
+            {
+                return (T)iCallCache[iCallName];
+            }
+
+            var ptr = il2cpp_resolve_icall(iCallName);
+
+            if (ptr == IntPtr.Zero)
+            {
+                throw new MissingMethodException($"Could not resolve internal call by name '{iCallName}'!");
+            }
+
+            var iCall = Marshal.GetDelegateForFunctionPointer(ptr, typeof(T));
+            iCallCache.Add(iCallName, iCall);
+
+            return (T)iCall;
+        }
+
+        #region External
+        #pragma warning disable IDE1006 // Naming Styles
+
+        [DllImport("GameAssembly", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
+        public static extern IntPtr il2cpp_resolve_icall([MarshalAs(UnmanagedType.LPStr)] string name);
+
+        #pragma warning restore IDE1006
+        #endregion
+    }
+}
+#endif

src/Helpers/ReflectionHelpers.cs

@@ -12,7 +12,7 @@ using UnhollowerBaseLib;
 using UnhollowerRuntimeLib;
 #endif
 
-namespace Explorer
+namespace Explorer.Helpers
 {
     public class ReflectionHelpers
     {

src/Helpers/UnityHelpers.cs

@@ -1,6 +1,6 @@
 using UnityEngine;
 
-namespace Explorer
+namespace Explorer.Helpers
 {
     public class UnityHelpers
     {