reference leak

lib/flutter_qjs.dart

@@ -1,159 +1,13 @@
-/*
- * @Description: quickjs engine
- * @Author: ekibun
- * @Date: 2020-08-08 08:29:09
- * @LastEditors: ekibun
- * @LastEditTime: 2020-10-06 23:47:13
- */
 import 'dart:async';
 import 'dart:ffi';
+import 'dart:io';
 import 'dart:isolate';
-
+import 'dart:typed_data';
 import 'package:ffi/ffi.dart';
-import 'ffi.dart';
-import 'wrapper.dart';
+import 'src/ffi.dart';
+export 'src/ffi.dart' show JSEvalFlag;
 
-/// Handler function to manage js module.
-typedef JsModuleHandler = String Function(String name);
-
-/// Handler to manage unhandled promise rejection.
-typedef JsHostPromiseRejectionHandler = void Function(String reason);
-
-/// Quickjs engine for flutter.
-class FlutterQjs {
-  Pointer _rt;
-  Pointer _ctx;
-
-  /// Max stack size for quickjs.
-  final int stackSize;
-
-  /// Message Port for event loop. Close it to stop dispatching event loop.
-  ReceivePort port = ReceivePort();
-
-  /// Handler function to manage js module.
-  JsModuleHandler moduleHandler;
-
-  /// Handler function to manage js module.
-  JsHostPromiseRejectionHandler hostPromiseRejectionHandler;
-
-  FlutterQjs({
-    this.moduleHandler,
-    this.stackSize,
-    this.hostPromiseRejectionHandler,
-  });
-
-  _ensureEngine() {
-    if (_rt != null) return;
-    _rt = jsNewRuntime((ctx, type, ptr) {
-      try {
-        switch (type) {
-          case JSChannelType.METHON:
-            final pdata = ptr.cast<Pointer>();
-            final argc = pdata.elementAt(1).value.cast<Int32>().value;
-            List pargs = [];
-            for (var i = 0; i < argc; i++) {
-              pargs.add(jsToDart(
-                ctx,
-                Pointer.fromAddress(
-                  pdata.elementAt(2).value.address + sizeOfJSValue * i,
-                ),
-              ));
-            }
-            JSInvokable func = jsToDart(ctx, pdata.elementAt(3).value);
-            return dartToJs(
-                ctx,
-                func.invoke(
-                  pargs,
-                  jsToDart(ctx, pdata.elementAt(0).value),
-                ));
-          case JSChannelType.MODULE:
-            if (moduleHandler == null) throw JSError('No ModuleHandler');
-            var ret = Utf8.toUtf8(moduleHandler(
-              Utf8.fromUtf8(ptr.cast<Utf8>()),
-            ));
-            Future.microtask(() {
-              free(ret);
-            });
-            return ret;
-          case JSChannelType.PROMISE_TRACK:
-            final errStr = parseJSException(ctx, ptr);
-            if (hostPromiseRejectionHandler != null) {
-              hostPromiseRejectionHandler(errStr.toString());
-            } else {
-              print('unhandled promise rejection: $errStr');
-            }
-            return Pointer.fromAddress(0);
-          case JSChannelType.FREE_OBJECT:
-            Pointer rt = ctx;
-            DartObject obj = DartObject.fromAddress(rt, ptr.address);
-            obj?.release();
-            runtimeOpaques[rt]?.ref?.remove(obj);
-            return Pointer.fromAddress(0);
-        }
-        throw JSError('call channel with wrong type');
-      } catch (e) {
-        if (type == JSChannelType.FREE_OBJECT) {
-          print('DartObject release error: $e');
-          return Pointer.fromAddress(0);
-        }
-        if (type == JSChannelType.MODULE) {
-          print('host Promise Rejection Handler error: $e');
-          return Pointer.fromAddress(0);
-        }
-        var throwObj = dartToJs(ctx, e);
-        var err = jsThrow(ctx, throwObj);
-        jsFreeValue(ctx, throwObj);
-        if (type == JSChannelType.MODULE) {
-          jsFreeValue(ctx, err);
-          return Pointer.fromAddress(0);
-        }
-        return err;
-      }
-    }, port);
-    if (this.stackSize != null && this.stackSize > 0)
-      jsSetMaxStackSize(_rt, this.stackSize);
-    _ctx = jsNewContext(_rt);
-  }
-
-  /// Free Runtime and Context which can be recreate when evaluate again.
-  close() {
-    if (_rt != null) {
-      jsFreeContext(_ctx);
-      jsFreeRuntime(_rt);
-    }
-    _rt = null;
-    _ctx = null;
-  }
-
-  /// Dispatch JavaScript Event loop.
-  Future<void> dispatch() async {
-    await for (var _ in port) {
-      if (_rt == null) continue;
-      while (true) {
-        int err = jsExecutePendingJob(_rt);
-        if (err <= 0) {
-          if (err < 0) print(parseJSException(_ctx));
-          break;
-        }
-      }
-    }
-  }
-
-  /// Evaluate js script.
-  dynamic evaluate(String command, {String name, int evalFlags}) {
-    _ensureEngine();
-    var jsval = jsEval(
-      _ctx,
-      command,
-      name ?? '<eval>',
-      evalFlags ?? JSEvalFlag.GLOBAL,
-    );
-    if (jsIsException(jsval) != 0) {
-      jsFreeValue(_ctx, jsval);
-      throw parseJSException(_ctx);
-    }
-    var result = jsToDart(_ctx, jsval);
-    jsFreeValue(_ctx, jsval);
-    return result;
-  }
-}
+part 'src/engine.dart';
+part 'src/isolate.dart';
+part 'src/wrapper.dart';
+part 'src/object.dart';