mirror of
https://github.com/wgh136/flutter_qjs.git
synced 2025-09-29 06:07:24 +00:00
reference leak
This commit is contained in:
ekibun
235
lib/src/wrapper.dart
Normal file
235
lib/src/wrapper.dart
Normal file
@@ -0,0 +1,235 @@
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/*
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* @Description: wrapper
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* @Author: ekibun
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* @Date: 2020-09-19 22:07:47
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* @LastEditors: ekibun
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* @LastEditTime: 2020-12-02 11:14:03
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*/
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part of '../flutter_qjs.dart';
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dynamic _parseJSException(Pointer ctx, [Pointer perr]) {
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final e = perr ?? jsGetException(ctx);
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var err;
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try {
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err = _jsToDart(ctx, e);
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} catch (exception) {
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err = exception;
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}
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if (perr == null) jsFreeValue(ctx, e);
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return err;
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}
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void _definePropertyValue(
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Pointer ctx,
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Pointer obj,
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dynamic key,
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dynamic val, {
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Map<dynamic, dynamic> cache,
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}) {
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final jsAtomVal = _dartToJs(ctx, key, cache: cache);
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final jsAtom = jsValueToAtom(ctx, jsAtomVal);
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jsDefinePropertyValue(
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ctx,
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obj,
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jsAtom,
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_dartToJs(ctx, val, cache: cache),
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JSProp.C_W_E,
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);
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jsFreeAtom(ctx, jsAtom);
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jsFreeValue(ctx, jsAtomVal);
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}
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Pointer _jsGetPropertyValue(
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Pointer ctx,
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Pointer obj,
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dynamic key, {
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Map<dynamic, dynamic> cache,
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}) {
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final jsAtomVal = _dartToJs(ctx, key, cache: cache);
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final jsAtom = jsValueToAtom(ctx, jsAtomVal);
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final jsProp = jsGetProperty(ctx, obj, jsAtom);
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jsFreeAtom(ctx, jsAtom);
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jsFreeValue(ctx, jsAtomVal);
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return jsProp;
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}
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Pointer _dartToJs(Pointer ctx, dynamic val, {Map<dynamic, dynamic> cache}) {
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if (val == null) return jsUNDEFINED();
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if (val is JSError) {
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final ret = jsNewError(ctx);
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_definePropertyValue(ctx, ret, "name", "");
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_definePropertyValue(ctx, ret, "message", val.message);
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_definePropertyValue(ctx, ret, "stack", val.stack);
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return ret;
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}
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if (val is _JSObject) return jsDupValue(ctx, val._val);
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if (val is Future) {
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final resolvingFunc = allocate<Uint8>(count: sizeOfJSValue * 2);
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final resolvingFunc2 =
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Pointer.fromAddress(resolvingFunc.address + sizeOfJSValue);
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final ret = jsNewPromiseCapability(ctx, resolvingFunc);
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_JSFunction res = _jsToDart(ctx, resolvingFunc)..leakable = true;
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_JSFunction rej = _jsToDart(ctx, resolvingFunc2)..leakable = true;
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jsFreeValue(ctx, resolvingFunc, free: false);
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jsFreeValue(ctx, resolvingFunc2, free: false);
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free(resolvingFunc);
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val.then((value) {
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res.invoke([value]);
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}, onError: (e) {
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rej.invoke([e]);
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}).whenComplete(() {
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res.release();
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rej.release();
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});
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return ret;
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}
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if (cache == null) cache = Map();
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if (val is bool) return jsNewBool(ctx, val ? 1 : 0);
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if (val is int) return jsNewInt64(ctx, val);
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if (val is double) return jsNewFloat64(ctx, val);
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if (val is String) return jsNewString(ctx, val);
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if (val is Uint8List) {
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final ptr = allocate<Uint8>(count: val.length);
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final byteList = ptr.asTypedList(val.length);
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byteList.setAll(0, val);
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final ret = jsNewArrayBufferCopy(ctx, ptr, val.length);
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free(ptr);
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return ret;
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}
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if (cache.containsKey(val)) {
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return jsDupValue(ctx, cache[val]);
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}
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if (val is List) {
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Pointer ret = jsNewArray(ctx);
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cache[val] = ret;
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for (int i = 0; i < val.length; ++i) {
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_definePropertyValue(ctx, ret, i, val[i], cache: cache);
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}
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return ret;
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}
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if (val is Map) {
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Pointer ret = jsNewObject(ctx);
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cache[val] = ret;
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for (MapEntry<dynamic, dynamic> entry in val.entries) {
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_definePropertyValue(ctx, ret, entry.key, entry.value, cache: cache);
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}
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return ret;
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}
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// wrap Function to JSInvokable
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final valWrap = JSInvokable._wrap(val);
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int dartObjectClassId =
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runtimeOpaques[jsGetRuntime(ctx)]?.dartObjectClassId ?? 0;
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if (dartObjectClassId == 0) return jsUNDEFINED();
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final dartObject = jsNewObjectClass(
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ctx,
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dartObjectClassId,
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identityHashCode(_DartObject(ctx, valWrap)),
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);
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if (valWrap is JSInvokable) {
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final ret = jsNewCFunction(ctx, dartObject);
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jsFreeValue(ctx, dartObject);
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return ret;
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}
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return dartObject;
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}
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dynamic _jsToDart(Pointer ctx, Pointer val, {Map<int, dynamic> cache}) {
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if (cache == null) cache = Map();
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int tag = jsValueGetTag(val);
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if (jsTagIsFloat64(tag) != 0) {
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return jsToFloat64(ctx, val);
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}
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switch (tag) {
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case JSTag.BOOL:
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return jsToBool(ctx, val) != 0;
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case JSTag.INT:
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return jsToInt64(ctx, val);
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case JSTag.STRING:
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return jsToCString(ctx, val);
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case JSTag.OBJECT:
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final rt = jsGetRuntime(ctx);
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final dartObjectClassId = runtimeOpaques[rt].dartObjectClassId;
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if (dartObjectClassId != 0) {
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final dartObject = _DartObject.fromAddress(
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rt, jsGetObjectOpaque(val, dartObjectClassId));
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if (dartObject != null) return dartObject._obj;
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}
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Pointer<IntPtr> psize = allocate<IntPtr>();
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Pointer<Uint8> buf = jsGetArrayBuffer(ctx, psize, val);
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int size = psize.value;
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free(psize);
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if (buf.address != 0) {
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return Uint8List.fromList(buf.asTypedList(size));
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}
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int valptr = jsValueGetPtr(val).address;
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if (cache.containsKey(valptr)) {
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return cache[valptr];
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}
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if (jsIsFunction(ctx, val) != 0) {
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return _JSFunction(ctx, val);
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} else if (jsIsError(ctx, val) != 0) {
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final err = jsToCString(ctx, val);
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final pstack = _jsGetPropertyValue(ctx, val, 'stack');
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final stack =
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jsToBool(ctx, pstack) != 0 ? jsToCString(ctx, pstack) : null;
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jsFreeValue(ctx, pstack);
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return JSError(err, stack);
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} else if (jsIsPromise(ctx, val) != 0) {
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Pointer jsPromiseThen = _jsGetPropertyValue(ctx, val, 'then');
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_JSFunction promiseThen = _jsToDart(ctx, jsPromiseThen, cache: cache);
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jsFreeValue(ctx, jsPromiseThen);
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final completer = Completer();
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completer.future.catchError((e) {});
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final jsPromise = _JSObject(ctx, val);
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final jsRet = promiseThen._invoke([
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(v) {
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if (!completer.isCompleted) completer.complete(v);
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},
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(e) {
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if (!completer.isCompleted) completer.completeError(e);
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},
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], jsPromise);
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jsPromise.release();
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promiseThen.release();
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bool isException = jsIsException(jsRet) != 0;
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jsFreeValue(ctx, jsRet);
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if (isException) throw _parseJSException(ctx);
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return completer.future;
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} else if (jsIsArray(ctx, val) != 0) {
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Pointer jslength = _jsGetPropertyValue(ctx, val, 'length');
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int length = jsToInt64(ctx, jslength);
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List<dynamic> ret = [];
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cache[valptr] = ret;
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for (int i = 0; i < length; ++i) {
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final jsProp = _jsGetPropertyValue(ctx, val, i);
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ret.add(_jsToDart(ctx, jsProp, cache: cache));
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jsFreeValue(ctx, jsProp);
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}
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return ret;
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} else {
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Pointer<Pointer> ptab = allocate<Pointer>();
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Pointer<Uint32> plen = allocate<Uint32>();
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if (jsGetOwnPropertyNames(ctx, ptab, plen, val, -1) != 0) return null;
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int len = plen.value;
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free(plen);
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Map<dynamic, dynamic> ret = Map();
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cache[valptr] = ret;
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for (int i = 0; i < len; ++i) {
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final jsAtom = jsPropertyEnumGetAtom(ptab.value, i);
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final jsAtomValue = jsAtomToValue(ctx, jsAtom);
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final jsProp = jsGetProperty(ctx, val, jsAtom);
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ret[_jsToDart(ctx, jsAtomValue, cache: cache)] =
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_jsToDart(ctx, jsProp, cache: cache);
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jsFreeValue(ctx, jsAtomValue);
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jsFreeValue(ctx, jsProp);
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jsFreeAtom(ctx, jsAtom);
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}
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jsFree(ctx, ptab.value);
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free(ptab);
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return ret;
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}
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break;
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default:
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}
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return null;
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}
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