windows wrapper

2025-09-27 05:27:23 +00:00 · 2020-09-21 01:41:52 +08:00
parent 5f9fdac9f4
commit 9175871678
28 changed files with 618 additions and 582 deletions
--- a/cxx/ffi.cpp
+++ b/cxx/ffi.cpp
@@ -3,10 +3,11 @@
 * @Author: ekibun
 * @Date: 2020-09-06 18:32:45
 * @LastEditors: ekibun
- * @LastEditTime: 2020-09-20 15:50:41
+ * @LastEditTime: 2020-09-21 01:41:39
 */
 #include "quickjs/quickjs.h"
 #include <functional>
+#include <future>

 #ifdef _MSC_VER
 #define DLLEXPORT __declspec(dllexport)
@@ -16,7 +17,7 @@

 extern "C"
 {
-  typedef JSValue *JSChannel(JSContext *ctx, const char *method, JSValueConst *argv);
+  typedef void *JSChannel(JSContext *ctx, const char *method, void *argv);

  DLLEXPORT JSValue *jsEXCEPTION()
  {
@@ -39,11 +40,13 @@ extern "C"
  {
    JSRuntime *rt = JS_GetRuntime(ctx);
    JSChannel *channel = (JSChannel *)JS_GetRuntimeOpaque(rt);
-    JSValue val = *channel(ctx, "__load_module__", new JSValue{JS_NewString(ctx, module_name)});
-    const char *str = JS_ToCString(ctx, val);
+    const char *str = (char *)channel(ctx, (char *)0, (void *)module_name);
+    if (str == 0)
+    {
+      JS_ThrowReferenceError(ctx, "Module Not Found");
+      return NULL;
+    }
    JSValue func_val = JS_Eval(ctx, str, strlen(str), module_name, JS_EVAL_TYPE_MODULE | JS_EVAL_FLAG_COMPILE_ONLY);
-    JS_FreeCString(ctx, str);
-    JS_FreeValue(ctx, val);
    if (JS_IsException(func_val))
      return NULL;
    /* the module is already referenced, so we must free it */
@@ -58,7 +61,7 @@ extern "C"
    JSChannel *channel = (JSChannel *)JS_GetRuntimeOpaque(rt);
    const char *str = JS_ToCString(ctx, argv[0]);
    JS_DupValue(ctx, *(argv + 1));
-    JSValue ret = *channel(ctx, str, argv + 1);
+    JSValue ret = *(JSValue *)channel(ctx, str, argv + 1);
    JS_FreeValue(ctx, *(argv + 1));
    JS_FreeCString(ctx, str);
    return ret;
@@ -230,7 +233,7 @@ extern "C"
  }

  DLLEXPORT int jsDefinePropertyValue(JSContext *ctx, JSValueConst *this_obj,
-                           JSAtom prop, JSValue *val, int flags)
+                                      JSAtom prop, JSValue *val, int flags)
  {
    return JS_DefinePropertyValue(ctx, *this_obj, prop, *val, flags);
  }
@@ -260,4 +263,36 @@ extern "C"
  {
    return ptab[i].atom;
  }
+
+  DLLEXPORT uint32_t sizeOfJSValue()
+  {
+    return sizeof JSValue;
+  }
+
+  DLLEXPORT void setJSValueList(JSValue *list, uint32_t i, JSValue *val)
+  {
+    list[i] = *val;
+  }
+
+  DLLEXPORT JSValue *jsCall(JSContext *ctx, JSValueConst *func_obj, JSValueConst *this_obj,
+                            int argc, JSValueConst *argv)
+  {
+    return new JSValue{JS_Call(ctx, *func_obj, *this_obj, argc, argv)};
+  }
+
+  DLLEXPORT int jsIsException(JSValueConst *val)
+  {
+    return JS_IsException(*val);
+  }
+
+  DLLEXPORT JSValue *jsGetException(JSContext *ctx)
+  {
+    return new JSValue{JS_GetException(ctx)};
+  }
+
+  DLLEXPORT int jsExecutePendingJob(JSRuntime *rt)
+  {
+    JSContext *ctx;
+    return JS_ExecutePendingJob(rt, &ctx);
+  }
 }
--- a/example/ios/Flutter/Generated.xcconfig
+++ b/example/ios/Flutter/Generated.xcconfig
@@ -0,0 +1,14 @@
+// This is a generated file; do not edit or check into version control.
+FLUTTER_ROOT=D:\flutter
+FLUTTER_APPLICATION_PATH=D:\project\vscode\neko\plugins\flutter_qjs\example
+FLUTTER_TARGET=lib\main.dart
+FLUTTER_BUILD_DIR=build
+SYMROOT=${SOURCE_ROOT}/../build\ios
+OTHER_LDFLAGS=$(inherited) -framework Flutter
+FLUTTER_FRAMEWORK_DIR=D:\flutter\bin\cache\artifacts\engine\ios
+FLUTTER_BUILD_NAME=1.0.0
+FLUTTER_BUILD_NUMBER=1
+DART_OBFUSCATION=false
+TRACK_WIDGET_CREATION=false
+TREE_SHAKE_ICONS=false
+PACKAGE_CONFIG=.packages
--- a/example/ios/Flutter/flutter_export_environment.sh
+++ b/example/ios/Flutter/flutter_export_environment.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+# This is a generated file; do not edit or check into version control.
+export "FLUTTER_ROOT=D:\flutter"
+export "FLUTTER_APPLICATION_PATH=D:\project\vscode\neko\plugins\flutter_qjs\example"
+export "FLUTTER_TARGET=lib\main.dart"
+export "FLUTTER_BUILD_DIR=build"
+export "SYMROOT=${SOURCE_ROOT}/../build\ios"
+export "OTHER_LDFLAGS=$(inherited) -framework Flutter"
+export "FLUTTER_FRAMEWORK_DIR=D:\flutter\bin\cache\artifacts\engine\ios"
+export "FLUTTER_BUILD_NAME=1.0.0"
+export "FLUTTER_BUILD_NUMBER=1"
+export "DART_OBFUSCATION=false"
+export "TRACK_WIDGET_CREATION=false"
+export "TREE_SHAKE_ICONS=false"
+export "PACKAGE_CONFIG=.packages"
--- a/example/ios/Runner/GeneratedPluginRegistrant.h
+++ b/example/ios/Runner/GeneratedPluginRegistrant.h
@@ -0,0 +1,17 @@
+//
+//  Generated file. Do not edit.
+//
+
+#ifndef GeneratedPluginRegistrant_h
+#define GeneratedPluginRegistrant_h
+
+#import <Flutter/Flutter.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface GeneratedPluginRegistrant : NSObject
+ (void)registerWithRegistry:(NSObject<FlutterPluginRegistry>*)registry;
+@end
+
+NS_ASSUME_NONNULL_END
+#endif /* GeneratedPluginRegistrant_h */
--- a/example/ios/Runner/GeneratedPluginRegistrant.m
+++ b/example/ios/Runner/GeneratedPluginRegistrant.m
@@ -0,0 +1,12 @@
+//
+//  Generated file. Do not edit.
+//
+
+#import "GeneratedPluginRegistrant.h"
+
+@implementation GeneratedPluginRegistrant
+
+ (void)registerWithRegistry:(NSObject<FlutterPluginRegistry>*)registry {
+}
+
+@end
--- a/example/lib/main.dart
+++ b/example/lib/main.dart
@@ -3,7 +3,7 @@
 * @Author: ekibun
 * @Date: 2020-08-08 08:16:51
 * @LastEditors: ekibun
- * @LastEditTime: 2020-09-06 19:44:32
+ * @LastEditTime: 2020-09-21 01:20:17
 */
 import 'package:flutter/material.dart';
 import 'dart:typed_data';
@@ -53,7 +53,7 @@ class _TestPageState extends State<TestPage> {
  _createEngine() async {
    if (engine != null) return;
    engine = FlutterQjs();
-    await engine.setMethodHandler((String method, List arg) async {
+    engine.setMethodHandler((String method, List arg) async {
      switch (method) {
        case "http":
          Response response = await Dio().get(arg[0]);
@@ -72,14 +72,16 @@ class _TestPageState extends State<TestPage> {
            Float32List(2)
          ]);
        default:
-          return JsMethodHandlerNotImplement();
+          throw Exception("NotImplement");
      }
    });
-    await engine.setModuleHandler((String module) async {
+    engine.setModuleHandler((String module) {
      if (module == "test") return "export default '${new DateTime.now()}'";
-      return await rootBundle.loadString(
-          "js/" + module.replaceFirst(new RegExp(r".js$"), "") + ".js");
+      return "";
+      // return await rootBundle.loadString(
+      //     "js/" + module.replaceFirst(new RegExp(r".js$"), "") + ".js");
    });
+    engine.dispatch();
  }

  @override
@@ -119,7 +121,7 @@ class _TestPageState extends State<TestPage> {
                      child: Text("close engine"),
                      onPressed: () async {
                        if (engine == null) return;
-                        await engine.destroy();
+                        await engine.close();
                        engine = null;
                      }),
                ],
--- a/example/windows/flutter/.template_version
+++ b/example/windows/flutter/.template_version
@@ -1 +0,0 @@
-6
--- a/example/windows/runner/CMakeLists.txt
+++ b/example/windows/runner/CMakeLists.txt
@@ -7,12 +7,12 @@ add_executable(${BINARY_NAME} WIN32
  "run_loop.cpp"
  "utils.cpp"
  "win32_window.cpp"
-  "window_configuration.cpp"
  "${FLUTTER_MANAGED_DIR}/generated_plugin_registrant.cc"
  "Runner.rc"
  "runner.exe.manifest"
 )
 apply_standard_settings(${BINARY_NAME})
+target_compile_definitions(${BINARY_NAME} PRIVATE "NOMINMAX")
 target_link_libraries(${BINARY_NAME} PRIVATE flutter flutter_wrapper_app)
 target_include_directories(${BINARY_NAME} PRIVATE "${CMAKE_SOURCE_DIR}")
 add_dependencies(${BINARY_NAME} flutter_assemble)
--- a/example/windows/runner/Runner.rc
+++ b/example/windows/runner/Runner.rc
@@ -54,6 +54,57 @@ END
 // remains consistent on all systems.
 IDI_APP_ICON            ICON                    "resources\\app_icon.ico"

+
+/////////////////////////////////////////////////////////////////////////////
+//
+// Version
+//
+
+#ifdef FLUTTER_BUILD_NUMBER
+#define VERSION_AS_NUMBER FLUTTER_BUILD_NUMBER
+#else
+#define VERSION_AS_NUMBER 1,0,0
+#endif
+
+#ifdef FLUTTER_BUILD_NAME
+#define VERSION_AS_STRING #FLUTTER_BUILD_NAME
+#else
+#define VERSION_AS_STRING "1.0.0"
+#endif
+
+VS_VERSION_INFO VERSIONINFO
+ FILEVERSION VERSION_AS_NUMBER
+ PRODUCTVERSION VERSION_AS_NUMBER
+ FILEFLAGSMASK VS_FFI_FILEFLAGSMASK
+#ifdef _DEBUG
+ FILEFLAGS VS_FF_DEBUG
+#else
+ FILEFLAGS 0x0L
+#endif
+ FILEOS VOS__WINDOWS32
+ FILETYPE VFT_APP
+ FILESUBTYPE 0x0L
+BEGIN
+    BLOCK "StringFileInfo"
+    BEGIN
+        BLOCK "040904e4"
+        BEGIN
+            VALUE "CompanyName", "soko.ekibun" "\0"
+            VALUE "FileDescription", "A new Flutter project." "\0"
+            VALUE "FileVersion", VERSION_AS_STRING "\0"
+            VALUE "InternalName", "example" "\0"
+            VALUE "LegalCopyright", "Copyright (C) 2020 soko.ekibun. All rights reserved." "\0"
+            VALUE "OriginalFilename", "example.exe" "\0"
+            VALUE "ProductName", "example" "\0"
+            VALUE "ProductVersion", VERSION_AS_STRING "\0"
+        END
+    END
+    BLOCK "VarFileInfo"
+    BEGIN
+        VALUE "Translation", 0x409, 1252
+    END
+END
+
 #endif    // English (United States) resources
 /////////////////////////////////////////////////////////////////////////////

--- a/example/windows/runner/flutter_window.cpp
+++ b/example/windows/runner/flutter_window.cpp
@@ -15,22 +15,25 @@ bool FlutterWindow::OnCreate() {
    return false;
  }

-  // The size here is arbitrary since SetChildContent will resize it.
-  flutter_controller_ =
-      std::make_unique<flutter::FlutterViewController>(100, 100, project_);
+  RECT frame = GetClientArea();
+
+  // The size here must match the window dimensions to avoid unnecessary surface
+  // creation / destruction in the startup path.
+  flutter_controller_ = std::make_unique<flutter::FlutterViewController>(
+      frame.right - frame.left, frame.bottom - frame.top, project_);
  // Ensure that basic setup of the controller was successful.
  if (!flutter_controller_->engine() || !flutter_controller_->view()) {
    return false;
  }
-  RegisterPlugins(flutter_controller_.get());
-  run_loop_->RegisterFlutterInstance(flutter_controller_.get());
+  RegisterPlugins(flutter_controller_->engine());
+  run_loop_->RegisterFlutterInstance(flutter_controller_->engine());
  SetChildContent(flutter_controller_->view()->GetNativeWindow());
  return true;
 }

 void FlutterWindow::OnDestroy() {
  if (flutter_controller_) {
-    run_loop_->UnregisterFlutterInstance(flutter_controller_.get());
+    run_loop_->UnregisterFlutterInstance(flutter_controller_->engine());
    flutter_controller_ = nullptr;
  }

@@ -50,5 +53,12 @@ FlutterWindow::MessageHandler(HWND hwnd, UINT const message,
      return *result;
    }
  }
+
+  switch (message) {
+    case WM_FONTCHANGE:
+      flutter_controller_->engine()->ReloadSystemFonts();
+      break;
+  }
+
  return Win32Window::MessageHandler(hwnd, message, wparam, lparam);
 }
--- a/example/windows/runner/flutter_window.h
+++ b/example/windows/runner/flutter_window.h
@@ -1,5 +1,5 @@
-#ifndef FLUTTER_WINDOW_H_
-#define FLUTTER_WINDOW_H_
+#ifndef RUNNER_FLUTTER_WINDOW_H_
+#define RUNNER_FLUTTER_WINDOW_H_

 #include <flutter/dart_project.h>
 #include <flutter/flutter_view_controller.h>
@@ -36,4 +36,4 @@ class FlutterWindow : public Win32Window {
  std::unique_ptr<flutter::FlutterViewController> flutter_controller_;
 };

-#endif  // FLUTTER_WINDOW_H_
+#endif  // RUNNER_FLUTTER_WINDOW_H_
--- a/example/windows/runner/main.cpp
+++ b/example/windows/runner/main.cpp
@@ -5,7 +5,6 @@
 #include "flutter_window.h"
 #include "run_loop.h"
 #include "utils.h"
-#include "window_configuration.h"

 int APIENTRY wWinMain(_In_ HINSTANCE instance, _In_opt_ HINSTANCE prev,
                      _In_ wchar_t *command_line, _In_ int show_command) {
@@ -23,9 +22,9 @@ int APIENTRY wWinMain(_In_ HINSTANCE instance, _In_opt_ HINSTANCE prev,

  flutter::DartProject project(L"data");
  FlutterWindow window(&run_loop, project);
-  Win32Window::Point origin(kFlutterWindowOriginX, kFlutterWindowOriginY);
-  Win32Window::Size size(kFlutterWindowWidth, kFlutterWindowHeight);
-  if (!window.CreateAndShow(kFlutterWindowTitle, origin, size)) {
+  Win32Window::Point origin(10, 10);
+  Win32Window::Size size(1280, 720);
+  if (!window.CreateAndShow(L"example", origin, size)) {
    return EXIT_FAILURE;
  }
  window.SetQuitOnClose(true);
--- a/example/windows/runner/run_loop.cpp
+++ b/example/windows/runner/run_loop.cpp
@@ -1,9 +1,6 @@
 #include "run_loop.h"

-#include <Windows.h>
-// Don't stomp std::min/std::max
-#undef max
-#undef min
+#include <windows.h>

 #include <algorithm>

@@ -47,20 +44,19 @@ void RunLoop::Run() {
 }

 void RunLoop::RegisterFlutterInstance(
-    flutter::FlutterViewController* flutter_instance) {
+    flutter::FlutterEngine* flutter_instance) {
  flutter_instances_.insert(flutter_instance);
 }

 void RunLoop::UnregisterFlutterInstance(
-    flutter::FlutterViewController* flutter_instance) {
+    flutter::FlutterEngine* flutter_instance) {
  flutter_instances_.erase(flutter_instance);
 }

 RunLoop::TimePoint RunLoop::ProcessFlutterMessages() {
  TimePoint next_event_time = TimePoint::max();
-  for (auto flutter_controller : flutter_instances_) {
-    std::chrono::nanoseconds wait_duration =
-        flutter_controller->ProcessMessages();
+  for (auto instance : flutter_instances_) {
+    std::chrono::nanoseconds wait_duration = instance->ProcessMessages();
    if (wait_duration != std::chrono::nanoseconds::max()) {
      next_event_time =
          std::min(next_event_time, TimePoint::clock::now() + wait_duration);
--- a/example/windows/runner/run_loop.h
+++ b/example/windows/runner/run_loop.h
@@ -1,7 +1,7 @@
-#ifndef RUN_LOOP_H_
-#define RUN_LOOP_H_
+#ifndef RUNNER_RUN_LOOP_H_
+#define RUNNER_RUN_LOOP_H_

-#include <flutter/flutter_view_controller.h>
+#include <flutter/flutter_engine.h>

 #include <chrono>
 #include <set>
@@ -22,11 +22,11 @@ class RunLoop {

  // Registers the given Flutter instance for event servicing.
  void RegisterFlutterInstance(
-      flutter::FlutterViewController* flutter_instance);
+      flutter::FlutterEngine* flutter_instance);

  // Unregisters the given Flutter instance from event servicing.
  void UnregisterFlutterInstance(
-      flutter::FlutterViewController* flutter_instance);
+      flutter::FlutterEngine* flutter_instance);

 private:
  using TimePoint = std::chrono::steady_clock::time_point;
@@ -34,7 +34,7 @@ class RunLoop {
  // Processes all currently pending messages for registered Flutter instances.
  TimePoint ProcessFlutterMessages();

-  std::set<flutter::FlutterViewController*> flutter_instances_;
+  std::set<flutter::FlutterEngine*> flutter_instances_;
 };

-#endif  // RUN_LOOP_H_
+#endif  // RUNNER_RUN_LOOP_H_
--- a/example/windows/runner/utils.h
+++ b/example/windows/runner/utils.h
@@ -1,8 +1,8 @@
-#ifndef CONSOLE_UTILS_H_
-#define CONSOLE_UTILS_H_
+#ifndef RUNNER_UTILS_H_
+#define RUNNER_UTILS_H_

 // Creates a console for the process, and redirects stdout and stderr to
 // it for both the runner and the Flutter library.
 void CreateAndAttachConsole();

-#endif  // CONSOLE_UTILS_H_
+#endif  // RUNNER_UTILS_H_
--- a/example/windows/runner/win32_window.cpp
+++ b/example/windows/runner/win32_window.cpp
@@ -174,8 +174,7 @@ Win32Window::MessageHandler(HWND hwnd,
      return 0;
    }
    case WM_SIZE:
-      RECT rect;
-      GetClientRect(hwnd, &rect);
+      RECT rect = GetClientArea();
      if (child_content_ != nullptr) {
        // Size and position the child window.
        MoveWindow(child_content_, rect.left, rect.top, rect.right - rect.left,
@@ -188,11 +187,6 @@ Win32Window::MessageHandler(HWND hwnd,
        SetFocus(child_content_);
      }
      return 0;
-
-    // Messages that are directly forwarded to embedding.
-    case WM_FONTCHANGE:
-      SendMessage(child_content_, WM_FONTCHANGE, NULL, NULL);
-      return 0;
  }

  return DefWindowProc(window_handle_, message, wparam, lparam);
@@ -218,8 +212,7 @@ Win32Window* Win32Window::GetThisFromHandle(HWND const window) noexcept {
 void Win32Window::SetChildContent(HWND content) {
  child_content_ = content;
  SetParent(content, window_handle_);
-  RECT frame;
-  GetClientRect(window_handle_, &frame);
+  RECT frame = GetClientArea();

  MoveWindow(content, frame.left, frame.top, frame.right - frame.left,
             frame.bottom - frame.top, true);
@@ -227,6 +220,12 @@ void Win32Window::SetChildContent(HWND content) {
  SetFocus(child_content_);
 }

+RECT Win32Window::GetClientArea() {
+  RECT frame;
+  GetClientRect(window_handle_, &frame);
+  return frame;
+}
+
 HWND Win32Window::GetHandle() {
  return window_handle_;
 }
--- a/example/windows/runner/win32_window.h
+++ b/example/windows/runner/win32_window.h
@@ -1,8 +1,7 @@
-#ifndef WIN32_WINDOW_H_
-#define WIN32_WINDOW_H_
+#ifndef RUNNER_WIN32_WINDOW_H_
+#define RUNNER_WIN32_WINDOW_H_

-#include <Windows.h>
-#include <Windowsx.h>
+#include <windows.h>

 #include <functional>
 #include <memory>
@@ -52,6 +51,9 @@ class Win32Window {
  // If true, closing this window will quit the application.
  void SetQuitOnClose(bool quit_on_close);

+  // Return a RECT representing the bounds of the current client area.
+  RECT GetClientArea();
+
 protected:
  // Processes and route salient window messages for mouse handling,
  // size change and DPI. Delegates handling of these to member overloads that
@@ -93,4 +95,4 @@ class Win32Window {
  HWND child_content_ = nullptr;
 };

-#endif  // WIN32_WINDOW_H_
+#endif  // RUNNER_WIN32_WINDOW_H_
--- a/example/windows/runner/window_configuration.cpp
+++ b/example/windows/runner/window_configuration.cpp
@@ -1,7 +0,0 @@
-#include "window_configuration.h"
-
-const wchar_t* kFlutterWindowTitle = L"example";
-const unsigned int kFlutterWindowOriginX = 10;
-const unsigned int kFlutterWindowOriginY = 10;
-const unsigned int kFlutterWindowWidth = 1280;
-const unsigned int kFlutterWindowHeight = 720;
--- a/example/windows/runner/window_configuration.h
+++ b/example/windows/runner/window_configuration.h
@@ -1,18 +0,0 @@
-#ifndef WINDOW_CONFIGURATION_
-#define WINDOW_CONFIGURATION_
-
-// This is a temporary approach to isolate changes that people are likely to
-// make to main.cpp, where the APIs are still in flux. This will reduce the
-// need to resolve conflicts or re-create changes slightly differently every
-// time the Windows Flutter API surface changes.
-//
-// Longer term there should be simpler configuration options for common
-// customizations like this, without requiring native code changes.
-
-extern const wchar_t* kFlutterWindowTitle;
-extern const unsigned int kFlutterWindowOriginX;
-extern const unsigned int kFlutterWindowOriginY;
-extern const unsigned int kFlutterWindowWidth;
-extern const unsigned int kFlutterWindowHeight;
-
-#endif  // WINDOW_CONFIGURATION_
--- a/lib/ffi.dart
+++ b/lib/ffi.dart
@@ -3,9 +3,11 @@
 * @Author: ekibun
 * @Date: 2020-09-19 10:29:04
 * @LastEditors: ekibun
- * @LastEditTime: 2020-09-20 15:41:02
+ * @LastEditTime: 2020-09-21 01:30:41
 */
 import 'dart:ffi';
+import 'dart:io';
+import 'dart:isolate';

 import 'package:ffi/ffi.dart';

@@ -24,7 +26,7 @@ class JSProp {
  static const WRITABLE = (1 << 1);
  static const ENUMERABLE = (1 << 2);
  static const C_W_E = (CONFIGURABLE | WRITABLE | ENUMERABLE);
-} 
+}

 class JSTag {
  static const FIRST = -11; /* first negative tag */
@@ -47,7 +49,11 @@ class JSTag {
  static const FLOAT64 = 7;
 }

-final DynamicLibrary qjsLib = DynamicLibrary.open("test/lib/build/Debug/ffi_library.dll");
+final DynamicLibrary qjsLib = Platform.environment['FLUTTER_TEST'] == 'true'
+    ? (Platform.isWindows
+        ? DynamicLibrary.open("test/build/Debug/flutter_qjs.dll")
+        : DynamicLibrary.process())
+    : (Platform.isWindows ? DynamicLibrary.open("flutter_qjs_plugin.dll") : DynamicLibrary.process());

 /// JSValue *jsEXCEPTION()
 final Pointer Function() jsEXCEPTION =
@@ -68,24 +74,28 @@ final Pointer Function(
    )>>("jsNewRuntime")
    .asFunction();

-typedef JSChannel = Pointer Function(Pointer ctx, String method, Pointer argv);
+typedef JSChannel = Pointer Function(Pointer ctx, Pointer method, Pointer argv);

 class RuntimeOpaque {
  JSChannel channel;
  List<JSRef> ref = List();
+  ReceivePort port;
+  Pointer Function(Future) futureToPromise;
+  Future Function(Pointer) promsieToFuture;
 }

 final Map<Pointer, RuntimeOpaque> runtimeOpaques = Map();

-Pointer channelDispacher(Pointer ctx, Pointer<Utf8> method, Pointer argv) {
-  return runtimeOpaques[jsGetRuntime(ctx)].channel(ctx, Utf8.fromUtf8(method), argv);
+Pointer channelDispacher(Pointer ctx, Pointer method, Pointer argv) {
+  return runtimeOpaques[jsGetRuntime(ctx)].channel(ctx, method, argv);
 }

 Pointer jsNewRuntime(
  JSChannel callback,
+  ReceivePort port,
 ) {
  var rt = _jsNewRuntime(Pointer.fromFunction(channelDispacher));
-  runtimeOpaques[rt] = RuntimeOpaque()..channel = callback;
+  runtimeOpaques[rt] = RuntimeOpaque()..channel = callback..port = port;
  return rt;
 }

@@ -173,6 +183,7 @@ Pointer jsEval(
  var val = _jsEval(ctx, utf8input, Utf8.strlen(utf8input), utf8filename, evalFlags);
  free(utf8input);
  free(utf8filename);
+  runtimeOpaques[jsGetRuntime(ctx)].port.sendPort.send('eval');
  return val;
 }

@@ -503,23 +514,18 @@ final Pointer Function(

 /// int jsDefinePropertyValue(JSContext *ctx, JSValueConst *this_obj,
 ///                           JSAtom prop, JSValue *val, int flags)
-final int Function(
-  Pointer ctx,
-  Pointer thisObj,
-  int prop,
-  Pointer val,
-  int flag
-) jsDefinePropertyValue = qjsLib
-    .lookup<
-        NativeFunction<
-            Int32 Function(
-      Pointer,
-      Pointer,
-      Uint32,
-      Pointer,
-      Int32,
-    )>>("jsDefinePropertyValue")
-    .asFunction();
+final int Function(Pointer ctx, Pointer thisObj, int prop, Pointer val, int flag)
+    jsDefinePropertyValue = qjsLib
+        .lookup<
+            NativeFunction<
+                Int32 Function(
+          Pointer,
+          Pointer,
+          Uint32,
+          Pointer,
+          Int32,
+        )>>("jsDefinePropertyValue")
+        .asFunction();

 /// void jsFreeAtom(JSContext *ctx, JSAtom v)
 final Pointer Function(
@@ -592,3 +598,102 @@ final int Function(
      Int32,
    )>>("jsPropertyEnumGetAtom")
    .asFunction();
+
+/// uint32_t sizeOfJSValue()
+final int Function() _sizeOfJSValue =
+    qjsLib.lookup<NativeFunction<Uint32 Function()>>("sizeOfJSValue").asFunction();
+
+final sizeOfJSValue = _sizeOfJSValue();
+
+/// void setJSValueList(JSValue *list, int i, JSValue *val)
+final void Function(
+  Pointer list,
+  int i,
+  Pointer val,
+) setJSValueList = qjsLib
+    .lookup<
+        NativeFunction<
+            Void Function(
+      Pointer,
+      Uint32,
+      Pointer,
+    )>>("setJSValueList")
+    .asFunction();
+
+/// JSValue *jsCall(JSContext *ctx, JSValueConst *func_obj, JSValueConst *this_obj,
+///                 int argc, JSValueConst *argv)
+final Pointer Function(
+  Pointer ctx,
+  Pointer funcObj,
+  Pointer thisObj,
+  int argc,
+  Pointer argv,
+) _jsCall = qjsLib
+    .lookup<
+        NativeFunction<
+            Pointer Function(
+      Pointer,
+      Pointer,
+      Pointer,
+      Int32,
+      Pointer,
+    )>>("jsCall")
+    .asFunction();
+
+Pointer jsCall(
+  Pointer ctx,
+  Pointer funcObj,
+  Pointer thisObj,
+  List<Pointer> argv,
+) {
+  Pointer jsArgs = allocate<Uint8>(count: argv.length > 0 ? sizeOfJSValue * argv.length : 1);
+  for (int i = 0; i < argv.length; ++i) {
+    Pointer jsArg = argv[i];
+    setJSValueList(jsArgs, i, jsArg);
+  }
+  Pointer func1 = jsDupValue(ctx, funcObj);
+  Pointer _thisObj = thisObj ?? jsUNDEFINED();
+  Pointer jsRet = _jsCall(ctx, funcObj, _thisObj, argv.length, jsArgs);
+  if (thisObj == null) {
+    jsFreeValue(ctx, _thisObj);
+    deleteJSValue(_thisObj);
+  }
+  jsFreeValue(ctx, func1);
+  deleteJSValue(func1);
+  free(jsArgs);
+  runtimeOpaques[jsGetRuntime(ctx)].port.sendPort.send('call');
+  return jsRet;
+}
+
+/// int jsIsException(JSValueConst *val)
+final int Function(
+  Pointer val,
+) jsIsException = qjsLib
+    .lookup<
+        NativeFunction<
+            Int32 Function(
+      Pointer,
+    )>>("jsIsException")
+    .asFunction();
+
+/// JSValue *jsGetException(JSContext *ctx)
+final Pointer Function(
+  Pointer ctx,
+) jsGetException = qjsLib
+    .lookup<
+        NativeFunction<
+            Pointer Function(
+      Pointer,
+    )>>("jsGetException")
+    .asFunction();
+
+/// int jsExecutePendingJob(JSRuntime *rt)
+final int Function(
+  Pointer ctx,
+) jsExecutePendingJob = qjsLib
+    .lookup<
+        NativeFunction<
+            Int32 Function(
+      Pointer,
+    )>>("jsExecutePendingJob")
+    .asFunction();
--- a/lib/flutter_qjs.dart
+++ b/lib/flutter_qjs.dart
@@ -3,131 +3,106 @@
 * @Author: ekibun
 * @Date: 2020-08-08 08:29:09
 * @LastEditors: ekibun
- * @LastEditTime: 2020-09-06 13:03:56
+ * @LastEditTime: 2020-09-21 01:36:30
 */
 import 'dart:async';
-import 'dart:io';
-import 'package:flutter/services.dart';
+import 'dart:ffi';
+import 'dart:isolate';
+
+import 'package:ffi/ffi.dart';
+import 'package:flutter_qjs/ffi.dart';
+import 'package:flutter_qjs/wrapper.dart';

 /// Handle function to manage js call with `dart(method, ...args)` function.
-typedef JsMethodHandler = Future<dynamic> Function(String method, List args);
+typedef JsMethodHandler = dynamic Function(String method, List args);

 /// Handle function to manage js module.
-typedef JsModuleHandler = Future<String> Function(String name);
+typedef JsModuleHandler = String Function(String name);

-/// return this in [JsMethodHandler] to mark method not implemented.
-class JsMethodHandlerNotImplement {}
-
-/// FlutterJs instance.
-/// Each [FlutterQjs] object creates a new thread that runs a simple js loop.
-/// Make sure call `destroy` to terminate thread and release memory when you don't need it.
 class FlutterQjs {
-  dynamic _engine;
-  dynamic get pointer => _engine;
+  Pointer _rt;
+  Pointer _ctx;
+  ReceivePort port = ReceivePort();
+  JsMethodHandler methodHandler;
+  JsModuleHandler moduleHandler;

-  _ensureEngine() async {
-    if (_engine == null) {
-      _engine = await _FlutterJs.instance._channel.invokeMethod("createEngine");
-    }
+  _ensureEngine() {
+    if (_rt != null) return;
+    _rt = jsNewRuntime((ctx, method, argv) {
+      if (method.address != 0) {
+        var argvs = jsToDart(ctx, argv);
+        if (methodHandler == null) throw Exception("No MethodHandler");
+        return dartToJs(ctx, methodHandler(Utf8.fromUtf8(method.cast<Utf8>()), argvs));
+      }
+      if (moduleHandler == null) throw Exception("No ModuleHandler");
+      var ret = Utf8.toUtf8(moduleHandler(Utf8.fromUtf8(argv.cast<Utf8>())));
+      Future.microtask(() {
+        free(ret);
+      });
+      return ret;
+    }, port);
+    _ctx = jsNewContextWithPromsieWrapper(_rt);
  }

  /// Set a handler to manage js call with `dart(method, ...args)` function.
-  setMethodHandler(JsMethodHandler handler) async {
-    if (handler == null)
-      return _FlutterJs.instance._methodHandlers.remove(_engine);
-    await _ensureEngine();
-    _FlutterJs.instance._methodHandlers[_engine] = handler;
+  setMethodHandler(JsMethodHandler handler) {
+    methodHandler = handler;
  }

  /// Set a handler to manage js module.
-  setModuleHandler(JsModuleHandler handler) async {
-    if (handler == null)
-      return _FlutterJs.instance._moduleHandlers.remove(_engine);
-    await _ensureEngine();
-    _FlutterJs.instance._moduleHandlers[_engine] = handler;
+  setModuleHandler(JsModuleHandler handler) {
+    moduleHandler = handler;
  }

-  /// Terminate thread and release memory.
-  destroy() async {
-    if (_engine != null) {
-      await setMethodHandler(null);
-      await setModuleHandler(null);
-      var engine = _engine;
-      _engine = null;
-      await _FlutterJs.instance._channel.invokeMethod("close", engine);
+  /// Free Runtime and Context which can be recreate when evaluate again.
+  recreate() {
+    if (_rt != null) {
+      jsFreeContext(_ctx);
+      jsFreeRuntime(_rt);
+    }
+    _rt = null;
+    _ctx = null;
+  }
+
+  /// Close ReceivePort.
+  close() {
+    if (port != null) {
+      port.close();
+      recreate();
+    }
+    port = null;
+  }
+
+  /// DispatchMessage
+  Future<void> dispatch() async {
+    await for (var _ in port) {
+      while (true) {
+        int err = jsExecutePendingJob(_rt);
+        if (err <= 0) {
+          if (err < 0) print(parseJSException(_ctx));
+          break;
+        }
+      }
+      List jsPromises = runtimeOpaques[_rt].ref.where((v) => v is JSPromise).toList();
+      for (JSPromise jsPromise in jsPromises) {
+        if (jsPromise.checkResolveReject()) {
+          jsPromise.release();
+          runtimeOpaques[_rt].ref.remove(jsPromise);
+        }
+      }
    }
  }

  /// Evaluate js script.
  Future<dynamic> evaluate(String command, String name) async {
-    await _ensureEngine();
-    var arguments = {"engine": _engine, "script": command, "name": name};
-    return _FlutterJs.instance._wrapFunctionArguments(
-        await _FlutterJs.instance._channel.invokeMethod("evaluate", arguments),
-        _engine);
-  }
-}
-
-class _FlutterJs {
-  factory _FlutterJs() => _getInstance();
-  static _FlutterJs get instance => _getInstance();
-  static _FlutterJs _instance;
-  MethodChannel _channel = const MethodChannel('soko.ekibun.flutter_qjs');
-  Map<dynamic, JsMethodHandler> _methodHandlers =
-      Map<dynamic, JsMethodHandler>();
-  Map<dynamic, JsModuleHandler> _moduleHandlers =
-      Map<dynamic, JsModuleHandler>();
-  _FlutterJs._internal() {
-    _channel.setMethodCallHandler((call) async {
-      var engine = call.arguments["engine"];
-      var args = call.arguments["args"];
-      if (args is List) {
-        if (_methodHandlers[engine] == null) return call.noSuchMethod(null);
-        var ret = await _methodHandlers[engine](
-            call.method, _wrapFunctionArguments(args, engine));
-        if (ret is JsMethodHandlerNotImplement) return call.noSuchMethod(null);
-        return ret;
-      } else {
-        if (_moduleHandlers[engine] == null) return call.noSuchMethod(null);
-        var ret = await _moduleHandlers[engine](args);
-        if (ret is JsMethodHandlerNotImplement) return call.noSuchMethod(null);
-        return ret;
-      }
-    });
-  }
-  dynamic _wrapFunctionArguments(dynamic val, dynamic engine) {
-    if (val is List && !(val is List<int>)) {
-      for (var i = 0; i < val.length; ++i) {
-        val[i] = _wrapFunctionArguments(val[i], engine);
-      }
-    } else if (val is Map) {
-      // wrap boolean in Android see https://github.com/flutter/flutter/issues/45066
-      if (Platform.isAndroid && val["__js_boolean__"] != null) {
-        return val["__js_boolean__"] != 0;
-      }
-      if (val["__js_function__"] != null) {
-        var functionId = val["__js_function__"];
-        return (List<dynamic> args) async {
-          var arguments = {
-            "engine": engine,
-            "function": functionId,
-            "arguments": args,
-          };
-          return _wrapFunctionArguments(
-              await _channel.invokeMethod("call", arguments), engine);
-        };
-      } else
-        for (var key in val.keys) {
-          val[key] = _wrapFunctionArguments(val[key], engine);
-        }
-    }
-    return val;
-  }
-
-  static _FlutterJs _getInstance() {
-    if (_instance == null) {
-      _instance = new _FlutterJs._internal();
-    }
-    return _instance;
+    _ensureEngine();
+    var jsval = jsEval(_ctx, command, name, JSEvalType.GLOBAL);
+    if (jsIsException(jsval) != 0) {
+      throw Exception(parseJSException(_ctx));
+    }
+    var ret = runtimeOpaques[_rt]?.promsieToFuture(jsval);
+    jsFreeValue(_ctx, jsval);
+    deleteJSValue(jsval);
+    return ret;
  }
 }
--- a/lib/wrapper.dart
+++ b/lib/wrapper.dart
@@ -3,8 +3,9 @@
 * @Author: ekibun
 * @Date: 2020-09-19 22:07:47
 * @LastEditors: ekibun
- * @LastEditTime: 2020-09-20 15:41:16
+ * @LastEditTime: 2020-09-21 01:23:06
 */
+import 'dart:async';
 import 'dart:ffi';
 import 'dart:typed_data';

@@ -12,10 +13,10 @@ import 'package:ffi/ffi.dart';

 import 'ffi.dart';

-class JSFunction extends JSRef {
+class JSRefValue implements JSRef {
  Pointer val;
  Pointer ctx;
-  JSFunction(this.ctx, Pointer val) {
+  JSRefValue(this.ctx, Pointer val) {
    Pointer rt = jsGetRuntime(ctx);
    this.val = jsDupValue(ctx, val);
    runtimeOpaques[rt]?.ref?.add(this);
@@ -26,17 +27,92 @@ class JSFunction extends JSRef {
    if (val != null) {
      jsFreeValue(ctx, val);
      deleteJSValue(val);
-      val = null;
    }
-  }
-
-  @override
-  noSuchMethod(Invocation invocation) {
-    return super.noSuchMethod(invocation);
+    val = null;
+    ctx = null;
  }
 }

+class JSPromise extends JSRefValue {
+  Completer completer;
+  JSPromise(Pointer ctx, Pointer val, this.completer) : super(ctx, val);
+
+  @override
+  void release() {
+    super.release();
+    if (!completer.isCompleted) {
+      completer.completeError("Promise cannot resolve");
+    }
+  }
+
+  bool checkResolveReject() {
+    if (val == null || completer.isCompleted) return true;
+    var status = jsToDart(ctx, val);
+    if (status["__resolved"] == true) {
+      completer.complete(status["__value"]);
+      return true;
+    }
+    if (status["__rejected"] == true) {
+      completer.completeError(status["__error"] ?? "undefined");
+      return true;
+    }
+    return false;
+  }
+}
+
+class JSFunction extends JSRefValue {
+  JSFunction(Pointer ctx, Pointer val) : super(ctx, val);
+
+  @override
+  noSuchMethod(Invocation invocation) {
+    if (val == null) return;
+    List<Pointer> args = invocation.positionalArguments.map((e) => dartToJs(ctx, e)).toList();
+    Pointer jsRet = jsCall(ctx, val, null, args);
+    for (Pointer jsArg in args) {
+      jsFreeValue(ctx, jsArg);
+      deleteJSValue(jsArg);
+    }
+    bool isException = jsIsException(jsRet) != 0;
+    var ret = jsToDart(ctx, jsRet);
+    jsFreeValue(ctx, jsRet);
+    deleteJSValue(jsRet);
+    if (isException) {
+      throw Exception(parseJSException(ctx));
+    }
+    return ret;
+  }
+}
+
+Pointer jsGetPropertyStr(Pointer ctx, Pointer val, String prop) {
+  var jsAtomVal = jsNewString(ctx, prop);
+  var jsAtom = jsValueToAtom(ctx, jsAtomVal);
+  Pointer jsProp = jsGetProperty(ctx, val, jsAtom);
+  jsFreeAtom(ctx, jsAtom);
+  jsFreeValue(ctx, jsAtomVal);
+  deleteJSValue(jsAtomVal);
+  return jsProp;
+}
+
+String parseJSException(Pointer ctx) {
+  Pointer e = jsGetException(ctx);
+  var err = jsToCString(ctx, e);
+  if (jsValueGetTag(e) == JSTag.OBJECT) {
+    Pointer stack = jsGetPropertyStr(ctx, e, "stack");
+    if (jsToBool(ctx, stack) != 0) {
+      err += '\n' + jsToCString(ctx, stack);
+    }
+    jsFreeValue(ctx, stack);
+    deleteJSValue(stack);
+  }
+  jsFreeValue(ctx, e);
+  deleteJSValue(e);
+  return err;
+}
+
 Pointer dartToJs(Pointer ctx, dynamic val, {Map<dynamic, dynamic> cache}) {
+  if (val is Future) {
+    return runtimeOpaques[jsGetRuntime(ctx)]?.futureToPromise(val);
+  }
  if (cache == null) cache = Map();
  if (val is bool) return jsNewBool(ctx, val ? 1 : 0);
  if (val is int) return jsNewInt64(ctx, val);
@@ -51,7 +127,7 @@ Pointer dartToJs(Pointer ctx, dynamic val, {Map<dynamic, dynamic> cache}) {
    return ret;
  }
  if (cache.containsKey(val)) {
-    return cache[val];
+    return jsDupValue(ctx, cache[val]);
  }
  if (val is JSFunction) {
    return jsDupValue(ctx, val.val);
@@ -78,7 +154,7 @@ Pointer dartToJs(Pointer ctx, dynamic val, {Map<dynamic, dynamic> cache}) {
  if (val is Map) {
    Pointer ret = jsNewObject(ctx);
    cache[val] = ret;
-    for (MapEntry<dynamic, dynamic> entry in val.entries){
+    for (MapEntry<dynamic, dynamic> entry in val.entries) {
      var jsAtomVal = dartToJs(ctx, entry.key, cache: cache);
      var jsAtom = jsValueToAtom(ctx, jsAtomVal);
      jsDefinePropertyValue(
@@ -125,13 +201,7 @@ dynamic jsToDart(Pointer ctx, Pointer val, {Map<int, dynamic> cache}) {
      if (jsIsFunction(ctx, val) != 0) {
        return JSFunction(ctx, val);
      } else if (jsIsArray(ctx, val) != 0) {
-        var jsAtomVal = jsNewString(ctx, "length");
-        var jsAtom = jsValueToAtom(ctx, jsAtomVal);
-        var jslength = jsGetProperty(ctx, val, jsAtom);
-        jsFreeAtom(ctx, jsAtom);
-        jsFreeValue(ctx, jsAtomVal);
-        deleteJSValue(jsAtomVal);
-
+        Pointer jslength = jsGetPropertyStr(ctx, val, "length");
        int length = jsToInt64(ctx, jslength);
        deleteJSValue(jslength);
        List<dynamic> ret = List();
@@ -175,3 +245,70 @@ dynamic jsToDart(Pointer ctx, Pointer val, {Map<int, dynamic> cache}) {
  }
  return null;
 }
+
+Pointer jsNewContextWithPromsieWrapper(Pointer rt) {
+  var ctx = jsNewContext(rt);
+  var jsPromiseCtor = jsEval(
+      ctx,
+      """
+        () => {
+          const __resolver = {};
+          const __ret = new Promise((res, rej) => {
+            __resolver.__res = res;
+            __resolver.__rej = rej;
+          });
+          __ret.__res = __resolver.__res;
+          __ret.__rej = __resolver.__rej;
+          return __ret;
+        }
+        """,
+      "<future>",
+      JSEvalType.GLOBAL);
+  var promiseCtor = JSRefValue(ctx, jsPromiseCtor);
+  jsFreeValue(ctx, jsPromiseCtor);
+  deleteJSValue(jsPromiseCtor);
+  runtimeOpaques[rt].futureToPromise = (future) {
+    var ctor = promiseCtor.val;
+    if (ctor == null) throw Exception("Runtime has been released!");
+    var jsPromise = jsCall(ctx, ctor, null, List());
+    var promise = jsToDart(ctx, jsPromise);
+    future.then((value) {
+      promise['__res'](value);
+    }).catchError((err) {
+      promise['__rej'](err);
+    });
+    return jsPromise;
+  };
+  var jsPromiseWrapper = jsEval(
+      ctx,
+      """
+        (value) => {
+          const __ret = Promise.resolve(value)
+            .then(v => {
+              __ret.__value = v;
+              __ret.__resolved = true;
+            }).catch(e => {
+              __ret.__error = e;
+              __ret.__rejected = true;
+            });
+          return __ret;
+        }
+        """,
+      "<future>",
+      JSEvalType.GLOBAL);
+  var promiseWrapper = JSRefValue(ctx, jsPromiseWrapper);
+  jsFreeValue(ctx, jsPromiseWrapper);
+  deleteJSValue(jsPromiseWrapper);
+  runtimeOpaques[rt].promsieToFuture = (promise) {
+    var completer = Completer();
+    var wrapper = promiseWrapper.val;
+    if (wrapper == null) completer.completeError(Exception("Runtime has been released!"));
+    var jsPromise = jsCall(ctx, wrapper, null, [promise]);
+    runtimeOpaques[rt].ref.add(JSPromise(ctx, jsPromise, completer));
+    jsFreeValue(ctx, jsPromise);
+    deleteJSValue(jsPromise);
+    return completer.future;
+  };
+
+  return ctx;
+}
--- a/test/lib/CMakeLists.txt
+++ b/test/lib/CMakeLists.txt
@@ -1,9 +1,11 @@
 cmake_minimum_required(VERSION 3.7 FATAL_ERROR)
 project(ffi_library LANGUAGES CXX)
-add_library(ffi_library SHARED ${CMAKE_CURRENT_SOURCE_DIR}/../../cxx/ffi.cpp)
+set(CXX_LIB_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../cxx)
+
+add_library(flutter_qjs SHARED ${CXX_LIB_DIR}/ffi.cpp)

 # quickjs
-set(QUICK_JS_LIB_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../../cxx/quickjs)
+set(QUICK_JS_LIB_DIR ${CXX_LIB_DIR}/quickjs)
 file (STRINGS "${QUICK_JS_LIB_DIR}/VERSION" QUICKJS_VERSION)
 add_library(libquickjs STATIC
    ${QUICK_JS_LIB_DIR}/cutils.c
@@ -16,4 +18,4 @@ project(libquickjs LANGUAGES C)
 target_compile_options(libquickjs PRIVATE "-DCONFIG_VERSION=\"${QUICKJS_VERSION}\"")
 target_compile_options(libquickjs PRIVATE "-DDUMP_LEAKS")

-target_link_libraries(ffi_library PRIVATE libquickjs)
+target_link_libraries(flutter_qjs PRIVATE libquickjs)
--- a/test/flutter_qjs_test.dart
+++ b/test/flutter_qjs_test.dart
@@ -3,16 +3,14 @@
 * @Author: ekibun
 * @Date: 2020-09-06 13:02:46
 * @LastEditors: ekibun
- * @LastEditTime: 2020-09-20 15:55:50
+ * @LastEditTime: 2020-09-21 01:39:49
 */
 import 'dart:convert';
 import 'dart:io';

+import 'package:flutter_qjs/flutter_qjs.dart';
 import 'package:flutter_test/flutter_test.dart';

-import 'package:flutter_qjs/ffi.dart';
-import 'package:flutter_qjs/wrapper.dart';
-
 void main() async {
  test('make', () async {
    final utf8Encoding = Encoding.getByName('utf-8');
@@ -22,7 +20,7 @@ void main() async {
    var result = Process.runSync(
      cmakePath,
      ['-S', './', '-B', buildDir],
-      workingDirectory: 'test/lib',
+      workingDirectory: 'test',
      stdoutEncoding: utf8Encoding,
      stderrEncoding: utf8Encoding,
    );
@@ -33,7 +31,7 @@ void main() async {
    result = Process.runSync(
      cmakePath,
      ['--build', buildDir, '--verbose'],
-      workingDirectory: 'test/lib',
+      workingDirectory: 'test',
      stdoutEncoding: utf8Encoding,
      stderrEncoding: utf8Encoding,
    );
@@ -42,36 +40,28 @@ void main() async {
    expect(result.exitCode, 0);
  });
  test('jsToDart', () async {
-    final rt = jsNewRuntime((ctx, method, argv) {
-      var argvs = jsToDart(ctx, argv);
-      print([method, argvs]);
-      return dartToJs(ctx, [
-        argvs,
-        {
-          [233, 2]: {}
-        }
-      ]);
+    final qjs = FlutterQjs();
+    qjs.setMethodHandler((method, args) {
+      print([method, args]);
+      return args;
    });
-    final ctx = jsNewContext(rt);
-    final jsval = jsEval(
-      ctx,
-      """
+    qjs.setModuleHandler((name) {
+      print(name);
+      return "export default '${new DateTime.now()}'";
+    });
+    qjs.evaluate("""
      const a = {};
      a.a = a;
-      channel('channel', [
-          0.1, true, false, 1, "world", 
-          new ArrayBuffer(2),
-          ()=>'hello',
-          a
-        ]);
-      """,
-      "<eval>",
-      JSEvalType.GLOBAL,
-    );
-    print(jsToDart(ctx, jsval));
-    jsFreeValue(ctx, jsval);
-    deleteJSValue(jsval);
-    jsFreeContext(ctx);
-    jsFreeRuntime(rt);
+      import("test").then((module) => channel('channel', [
+          (...a)=>`hello \${a}`,
+          0.1, true, false, 1, "world", module
+        ]));
+      """, "<eval>").then((value) {
+        print(value);
+      });
+    Future.delayed(Duration(seconds: 5)).then((v) {
+      qjs.close();
+    });
+    await qjs.dispatch();
  });
 }
--- a/test/lib/make.bat
+++ b/test/lib/make.bat
@@ -1,5 +0,0 @@
-cd %~dp0
-set CMAKE="C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe"
-set BUILD_DIR="./build"
-%CMAKE% -S ./ -B %BUILD_DIR%
-%CMAKE% --build %BUILD_DIR% --verbose
--- a/windows/CMakeLists.txt
+++ b/windows/CMakeLists.txt
@@ -1,7 +1,9 @@
 cmake_minimum_required(VERSION 3.15)

+set(CXX_LIB_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../cxx)
+
 # quickjs
-set(QUICK_JS_LIB_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../cxx/quickjs)
+set(QUICK_JS_LIB_DIR ${CXX_LIB_DIR}/quickjs)
 file (STRINGS "${QUICK_JS_LIB_DIR}/VERSION" QUICKJS_VERSION)
 add_library(libquickjs STATIC
    ${QUICK_JS_LIB_DIR}/cutils.c
@@ -21,6 +23,7 @@ set(PLUGIN_NAME "${PROJECT_NAME}_plugin")

 add_library(${PLUGIN_NAME} SHARED
  "${PLUGIN_NAME}.cpp"
+  "${CXX_LIB_DIR}/ffi.cpp"
 )
 apply_standard_settings(${PLUGIN_NAME})
 set_target_properties(${PLUGIN_NAME} PROPERTIES
--- a/windows/dart_js_wrapper.hpp
+++ b/windows/dart_js_wrapper.hpp
@@ -1,154 +0,0 @@
-/*
- * @Description: 
- * @Author: ekibun
- * @Date: 2020-08-14 21:45:02
- * @LastEditors: ekibun
- * @LastEditTime: 2020-08-25 18:08:45
- */
-#include "../cxx/js_engine.hpp"
-#include <flutter/standard_method_codec.h>
-#include <variant>
-
-namespace qjs
-{
-  JSValue dartToJs(JSContext *ctx, flutter::EncodableValue val)
-  {
-    if (val.IsNull())
-      return JS_UNDEFINED;
-    if (std::holds_alternative<bool>(val))
-      return JS_NewBool(ctx, std::get<bool>(val));
-    if (std::holds_alternative<int32_t>(val))
-      return JS_NewInt32(ctx, std::get<int32_t>(val));
-    if (std::holds_alternative<int64_t>(val))
-      return JS_NewInt64(ctx, std::get<int64_t>(val));
-    if (std::holds_alternative<double>(val))
-      return JS_NewFloat64(ctx, std::get<double>(val));
-    if (std::holds_alternative<std::string>(val))
-      return JS_NewString(ctx, std::get<std::string>(val).c_str());
-    if (std::holds_alternative<std::vector<uint8_t>>(val))
-    {
-      auto buf = std::get<std::vector<uint8_t>>(val);
-      return JS_NewArrayBufferCopy(ctx, buf.data(), buf.size());
-    }
-    if (std::holds_alternative<std::vector<int32_t>>(val))
-    {
-      auto buf = std::get<std::vector<int32_t>>(val);
-      return JS_NewArrayBufferCopy(ctx, (uint8_t *)buf.data(), buf.size() * 4);
-    }
-    if (std::holds_alternative<std::vector<int64_t>>(val))
-    {
-      auto buf = std::get<std::vector<int64_t>>(val);
-      return JS_NewArrayBufferCopy(ctx, (uint8_t *)buf.data(), buf.size() * 8);
-    }
-    if (std::holds_alternative<std::vector<double>>(val))
-    {
-      auto buf = std::get<std::vector<double>>(val);
-      JSValue array = JS_NewArray(ctx);
-      auto size = (uint32_t)buf.size();
-      for (uint32_t i = 0; i < size; ++i)
-      {
-        auto atom = JS_NewAtomUInt32(ctx, i);
-        JS_DefinePropertyValue(
-            ctx, array, atom, JS_NewFloat64(ctx, buf[i]),
-            JS_PROP_C_W_E);
-        JS_FreeAtom(ctx, atom);
-      }
-      return array;
-    }
-    if (std::holds_alternative<flutter::EncodableList>(val))
-    {
-      auto list = std::get<flutter::EncodableList>(val);
-      JSValue array = JS_NewArray(ctx);
-      auto size = (uint32_t)list.size();
-      for (uint32_t i = 0; i < size; i++)
-      {
-        auto atom = JS_NewAtomUInt32(ctx, i);
-        JS_DefinePropertyValue(
-            ctx, array, atom, dartToJs(ctx, list[i]),
-            JS_PROP_C_W_E);
-        JS_FreeAtom(ctx, atom);
-      }
-
-      return array;
-    }
-    if (std::holds_alternative<flutter::EncodableMap>(val))
-    {
-      auto map = std::get<flutter::EncodableMap>(val);
-      JSValue obj = JS_NewObject(ctx);
-      for (auto iter = map.begin(); iter != map.end(); ++iter)
-      {
-        auto atomvalue = dartToJs(ctx, iter->first);
-        auto atom = JS_ValueToAtom(ctx, atomvalue);
-        JS_DefinePropertyValue(
-            ctx, obj, atom, dartToJs(ctx, iter->second),
-            JS_PROP_C_W_E);
-        JS_FreeAtom(ctx, atom);
-        JS_FreeValue(ctx, atomvalue);
-      }
-
-      return obj;
-    }
-    return JS_UNDEFINED;
-  }
-
-  flutter::EncodableValue jsToDart(Value val, std::unordered_map<Value, flutter::EncodableValue> cache = std::unordered_map<Value, flutter::EncodableValue>())
-  {
-    int tag = JS_VALUE_GET_TAG(val.v);
-    if (JS_TAG_IS_FLOAT64(tag))
-      return (double)val;
-    switch (tag)
-    {
-    case JS_TAG_BOOL:
-      return (bool)val;
-    case JS_TAG_INT:
-      return (int64_t)val;
-    case JS_TAG_STRING:
-      return (std::string)val;
-    case JS_TAG_OBJECT:
-    { // ArrayBuffer
-      size_t size;
-      uint8_t *buf = JS_GetArrayBuffer(val.ctx, &size, val.v);
-      if (buf)
-        return (std::vector<uint8_t>(buf, buf + size));
-    }
-      if (cache.find(val) != cache.end())
-        return cache[val];
-      if (JS_IsFunction(val.ctx, val.v))
-      {
-        flutter::EncodableMap retMap;
-        retMap[std::string("__js_function__")] = (int64_t) new JSValue{js_add_ref(val)};
-        return retMap;
-      }
-      else if (JS_IsArray(val.ctx, val.v) > 0)
-      {
-        flutter::EncodableList retList;
-        cache[val] = retList;
-        uint32_t arrlen = (uint32_t)val["length"];
-        for (uint32_t i = 0; i < arrlen; i++)
-        {
-          retList.push_back(jsToDart(val[i], cache));
-        }
-        return retList;
-      }
-      else
-      {
-        qjs::JSPropertyEnum *ptab;
-        uint32_t plen;
-        if (JS_GetOwnPropertyNames(val.ctx, &ptab, &plen, val.v, -1))
-          return flutter::EncodableValue();
-        flutter::EncodableMap retMap;
-        cache[val] = retMap;
-        for (uint32_t i = 0; i < plen; i++)
-        {
-          retMap[jsToDart({val.ctx, JS_AtomToValue(val.ctx, ptab[i].atom)}, cache)] =
-              jsToDart({val.ctx, JS_GetProperty(val.ctx, val.v, ptab[i].atom)}, cache);
-          JS_FreeAtom(val.ctx, ptab[i].atom);
-        }
-        js_free(val.ctx, ptab);
-        return retMap;
-      }
-    default:
-      return flutter::EncodableValue();
-    }
-  }
-} // namespace qjs
--- a/windows/flutter_qjs_plugin.cpp
+++ b/windows/flutter_qjs_plugin.cpp
@@ -1,14 +1,16 @@
+/*
+ * @Description: empty plugin
+ * @Author: ekibun
+ * @Date: 2020-08-25 21:09:20
+ * @LastEditors: ekibun
+ * @LastEditTime: 2020-09-20 16:00:15
+ */
 #include "include/flutter_qjs/flutter_qjs_plugin.h"

 // This must be included before many other Windows headers.
 #include <windows.h>

-#include <flutter/method_channel.h>
 #include <flutter/plugin_registrar_windows.h>
-#include <flutter/standard_method_codec.h>
-#include <flutter/method_result_functions.h>
-
-#include "dart_js_wrapper.hpp"

 namespace
 {
@@ -21,160 +23,15 @@ namespace
    FlutterQjsPlugin();

    virtual ~FlutterQjsPlugin();
-
-  private:
-    // Called when a method is called on this plugin's channel from Dart.
-    void HandleMethodCall(
-        const flutter::MethodCall<flutter::EncodableValue> &method_call,
-        std::unique_ptr<flutter::MethodResult<flutter::EncodableValue>> result);
  };

-  std::shared_ptr<flutter::MethodChannel<flutter::EncodableValue>> channel;
-  std::promise<qjs::JSFutureReturn> *invokeChannelMethod(std::string name, qjs::Value args, qjs::Engine *engine)
-  {
-    auto promise = new std::promise<qjs::JSFutureReturn>();
-    auto map = new flutter::EncodableMap();
-    (*map)[std::string("engine")] = (int64_t)engine;
-    (*map)[std::string("args")] = qjs::jsToDart(args);
-    channel->InvokeMethod(
-        name,
-        std::make_unique<flutter::EncodableValue>(*map),
-        std::make_unique<flutter::MethodResultFunctions<flutter::EncodableValue>>(
-            (flutter::ResultHandlerSuccess<flutter::EncodableValue>)[promise](
-                const flutter::EncodableValue *result) {
-              promise->set_value((qjs::JSFutureReturn)[result = result ? *result : flutter::EncodableValue()](qjs::JSContext * ctx) {
-                qjs::JSValue *ret = new qjs::JSValue{qjs::dartToJs(ctx, result)};
-                return qjs::JSOSFutureArgv{1, ret};
-              });
-            },
-            (flutter::ResultHandlerError<flutter::EncodableValue>)[promise](
-                const std::string &error_code,
-                const std::string &error_message,
-                const flutter::EncodableValue *error_details) {
-              promise->set_value((qjs::JSFutureReturn)[error_message](qjs::JSContext * ctx) {
-                qjs::JSValue *ret = new qjs::JSValue{JS_NewString(ctx, error_message.c_str())};
-                return qjs::JSOSFutureArgv{-1, ret};
-              });
-            },
-            (flutter::ResultHandlerNotImplemented<flutter::EncodableValue>)[promise]() {
-              promise->set_value((qjs::JSFutureReturn)[](qjs::JSContext * ctx) {
-                qjs::JSValue *ret = new qjs::JSValue{JS_NewString(ctx, "NotImplemented")};
-                return qjs::JSOSFutureArgv{-1, ret};
-              });
-            }));
-    return promise;
-  }
-
  // static
  void FlutterQjsPlugin::RegisterWithRegistrar(
-      flutter::PluginRegistrarWindows *registrar)
-  {
-    channel =
-        std::make_unique<flutter::MethodChannel<flutter::EncodableValue>>(
-            registrar->messenger(), "soko.ekibun.flutter_qjs",
-            &flutter::StandardMethodCodec::GetInstance());
-
-    auto plugin = std::make_unique<FlutterQjsPlugin>();
-
-    channel->SetMethodCallHandler(
-        [plugin_pointer = plugin.get()](const auto &call, auto result) {
-          plugin_pointer->HandleMethodCall(call, std::move(result));
-        });
-
-    registrar->AddPlugin(std::move(plugin));
-  }
+      flutter::PluginRegistrarWindows *registrar) {}

  FlutterQjsPlugin::FlutterQjsPlugin() {}

  FlutterQjsPlugin::~FlutterQjsPlugin() {}
-
-  const flutter::EncodableValue &ValueOrNull(const flutter::EncodableMap &map, const char *key)
-  {
-    static flutter::EncodableValue null_value;
-    auto it = map.find(flutter::EncodableValue(key));
-    if (it == map.end())
-    {
-      return null_value;
-    }
-    return it->second;
-  }
-
-  void FlutterQjsPlugin::HandleMethodCall(
-      const flutter::MethodCall<flutter::EncodableValue> &method_call,
-      std::unique_ptr<flutter::MethodResult<flutter::EncodableValue>> result)
-  {
-    // Replace "getPlatformVersion" check with your plugin's method.
-    // See:
-    // https://github.com/flutter/engine/tree/master/shell/platform/common/cpp/client_wrapper/include/flutter
-    // and
-    // https://github.com/flutter/engine/tree/master/shell/platform/glfw/client_wrapper/include/flutter
-    // for the relevant Flutter APIs.
-    if (method_call.method_name().compare("createEngine") == 0)
-    {
-      qjs::Engine *engine = new qjs::Engine(invokeChannelMethod);
-      flutter::EncodableValue response = (int64_t)engine;
-      result->Success(&response);
-    }
-    else if (method_call.method_name().compare("evaluate") == 0)
-    {
-      flutter::EncodableMap args = *std::get_if<flutter::EncodableMap>(method_call.arguments());
-      qjs::Engine *engine = (qjs::Engine *)std::get<int64_t>(ValueOrNull(args, "engine"));
-      std::string script = std::get<std::string>(ValueOrNull(args, "script"));
-      std::string name = std::get<std::string>(ValueOrNull(args, "name"));
-      std::shared_ptr<flutter::MethodResult<flutter::EncodableValue>> presult = std::move(result);
-      engine->commit(qjs::EngineTask{
-          [script, name](qjs::Context &ctx) {
-            return ctx.eval(script, name.c_str(), JS_EVAL_TYPE_GLOBAL);
-          },
-          [presult](qjs::Value resolve) {
-            flutter::EncodableValue response = qjs::jsToDart(resolve);
-            presult->Success(&response);
-          },
-          [presult](qjs::Value reject) {
-            presult->Error("FlutterJSException", qjs::getStackTrack(reject));
-          }});
-    }
-    else if (method_call.method_name().compare("call") == 0)
-    {
-      flutter::EncodableMap args = *std::get_if<flutter::EncodableMap>(method_call.arguments());
-      qjs::Engine *engine = (qjs::Engine *)std::get<int64_t>(ValueOrNull(args, "engine"));
-      qjs::JSValue *function = (qjs::JSValue *)std::get<int64_t>(ValueOrNull(args, "function"));
-      flutter::EncodableList arguments = std::get<flutter::EncodableList>(ValueOrNull(args, "arguments"));
-      std::shared_ptr<flutter::MethodResult<flutter::EncodableValue>> presult = std::move(result);
-      engine->commit(qjs::EngineTask{
-          [function, arguments](qjs::Context &ctx) {
-            size_t argscount = arguments.size();
-            qjs::JSValue *callargs = new qjs::JSValue[argscount];
-            for (size_t i = 0; i < argscount; i++)
-            {
-              callargs[i] = qjs::dartToJs(ctx.ctx, arguments[i]);
-            }
-            qjs::JSValue ret = qjs::call_handler(ctx.ctx, *function, (int)argscount, callargs);
-            delete[] callargs;
-            if (qjs::JS_IsException(ret))
-              throw qjs::exception{};
-            return qjs::Value{ctx.ctx, ret};
-          },
-          [presult](qjs::Value resolve) {
-            flutter::EncodableValue response = qjs::jsToDart(resolve);
-            presult->Success(&response);
-          },
-          [presult](qjs::Value reject) {
-            presult->Error("FlutterJSException", qjs::getStackTrack(reject));
-          }});
-    }
-    else if (method_call.method_name().compare("close") == 0)
-    {
-      qjs::Engine *engine = (qjs::Engine *)*std::get_if<int64_t>(method_call.arguments());
-      delete engine;
-      result->Success();
-    }
-    else
-    {
-      result->NotImplemented();
-    }
-  }
-
 } // namespace

 void FlutterQjsPluginRegisterWithRegistrar(