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v0.3.0

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ekibun
2021-01-24 21:12:13 +08:00
parent 6b0bab2faf
commit ee110f55e1
12 changed files with 202 additions and 170 deletions
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11
lib/ffi.dart
View File

@@ -186,17 +186,6 @@ final Pointer Function(
)>>("jsNewCFunction")
.asFunction();
/// JSValue *jsGetGlobalObject(JSContext *ctx)
final Pointer Function(
Pointer ctx,
) jsGetGlobalObject = qjsLib
.lookup<
NativeFunction<
Pointer Function(
Pointer,
)>>("jsGetGlobalObject")
.asFunction();
/// JSContext *jsNewContext(JSRuntime *rt)
final Pointer Function(
Pointer rt,

23
lib/flutter_qjs.dart
View File

@@ -13,6 +13,8 @@ import 'package:ffi/ffi.dart';
import 'package:flutter_qjs/ffi.dart';
import 'package:flutter_qjs/wrapper.dart';
import 'isolate.dart';
/// Handler function to manage js module.
typedef JsModuleHandler = String Function(String name);
@@ -44,11 +46,10 @@ class FlutterQjs {
this.hostPromiseRejectionHandler,
});
setToGlobalObject(dynamic key, dynamic val) {
_ensureEngine();
final globalObject = jsGetGlobalObject(_ctx);
definePropertyValue(_ctx, globalObject, key, val);
jsFreeValue(_ctx, globalObject);
static applyFunction(Function func, List args, dynamic thisVal) {
final passThis =
RegExp("{.*thisVal.*}").hasMatch(func.runtimeType.toString());
return Function.apply(func, args, passThis ? {#thisVal: thisVal} : null);
}
_ensureEngine() {
@@ -68,13 +69,11 @@ class FlutterQjs {
)));
}
final thisVal = jsToDart(ctx, pdata.elementAt(0).value);
Function func = jsToDart(ctx, pdata.elementAt(3).value);
final passThis =
RegExp("{.*thisVal.*}").hasMatch(func.runtimeType.toString());
return dartToJs(
ctx,
Function.apply(func, args, passThis ? {#thisVal: thisVal} : null),
);
final func = jsToDart(ctx, pdata.elementAt(3).value);
final ret = func is QjsInvokable
? func.invoke(args, thisVal)
: applyFunction(func, args, thisVal);
return dartToJs(ctx, ret);
case JSChannelType.MODULE:
if (moduleHandler == null) throw Exception("No ModuleHandler");
var ret = Utf8.toUtf8(moduleHandler(

128
lib/isolate.dart
View File

@@ -14,13 +14,13 @@ import 'package:ffi/ffi.dart';
import 'package:flutter_qjs/flutter_qjs.dart';
import 'package:flutter_qjs/wrapper.dart';
class IsolateJSFunction {
class IsolateJSFunction implements QjsInvokable {
int val;
int ctx;
SendPort port;
IsolateJSFunction(this.ctx, this.val, this.port);
Future<dynamic> invoke(List<dynamic> arguments) async {
Future invoke(List arguments, [thisVal]) async {
if (0 == val ?? 0) return;
var evaluatePort = ReceivePort();
port.send({
@@ -28,9 +28,11 @@ class IsolateJSFunction {
'ctx': ctx,
'val': val,
'args': _encodeData(arguments),
'this': _encodeData(thisVal),
'port': evaluatePort.sendPort,
});
var result = await evaluatePort.first;
evaluatePort.close();
if (result['data'] != null)
return _decodeData(result['data'], port);
else
@@ -39,7 +41,63 @@ class IsolateJSFunction {
@override
noSuchMethod(Invocation invocation) {
return invoke(invocation.positionalArguments);
return invoke(
invocation.positionalArguments,
invocation.namedArguments[#thisVal],
);
}
}
class IsolateFunction implements QjsInvokable {
SendPort _port;
SendPort func;
IsolateFunction(this.func, this._port);
static IsolateFunction bind(Function func, SendPort port) {
final funcPort = ReceivePort();
funcPort.listen((msg) async {
var data;
SendPort msgPort = msg['port'];
try {
List args = _decodeData(msg['args'], port);
Map thisVal = _decodeData(msg['this'], port);
data = await FlutterQjs.applyFunction(func, args, thisVal);
if (msgPort != null)
msgPort.send({
'data': _encodeData(data),
});
} catch (e, stack) {
if (msgPort != null)
msgPort.send({
'error': e.toString() + "\n" + stack.toString(),
});
}
});
return IsolateFunction(funcPort.sendPort, port);
}
Future invoke(List positionalArguments, [thisVal]) async {
if (func == null) return;
var evaluatePort = ReceivePort();
func.send({
'args': _encodeData(positionalArguments),
'this': _encodeData(thisVal),
'port': evaluatePort.sendPort,
});
var result = await evaluatePort.first;
evaluatePort.close();
if (result['data'] != null)
return _decodeData(result['data'], _port);
else
throw result['error'];
}
@override
noSuchMethod(Invocation invocation) {
return invoke(
invocation.positionalArguments,
invocation.namedArguments[#thisVal],
);
}
}
@@ -75,17 +133,24 @@ dynamic _encodeData(dynamic data, {Map<dynamic, dynamic> cache}) {
'__js_function_val': data.val,
};
}
if (data is IsolateFunction) {
return {
'__js_function_port': data.func,
};
}
if (data is Future) {
var futurePort = ReceivePort();
data.then((value) {
futurePort.first.then((port) => {
(port as SendPort).send({'data': _encodeData(value)})
});
futurePort.first.then((port) {
futurePort.close();
(port as SendPort).send({'data': _encodeData(value)});
});
}, onError: (e, stack) {
futurePort.first.then((port) => {
(port as SendPort)
.send({'error': e.toString() + "\n" + stack.toString()})
});
futurePort.first.then((port) {
futurePort.close();
(port as SendPort)
.send({'error': e.toString() + "\n" + stack.toString()});
});
});
return {
'__js_future_port': futurePort.sendPort,
@@ -116,12 +181,17 @@ dynamic _decodeData(dynamic data, SendPort port,
return JSFunction.fromAddress(ctx, val);
}
}
if (data.containsKey('__js_function_port')) {
return IsolateFunction(data['__js_function_port'], port);
}
if (data.containsKey('__js_future_port')) {
SendPort port = data['__js_future_port'];
var futurePort = ReceivePort();
port.send(futurePort.sendPort);
var futureCompleter = Completer();
futureCompleter.future.catchError((e) {});
futurePort.first.then((value) {
futurePort.close();
if (value['error'] != null) {
futureCompleter.completeError(value['error']);
} else {
@@ -172,8 +242,7 @@ void _runJsIsolate(Map spawnMessage) async {
return ret;
},
);
qjs.dispatch();
await for (var msg in port) {
port.listen((msg) async {
var data;
SendPort msgPort = msg['port'];
try {
@@ -189,10 +258,10 @@ void _runJsIsolate(Map spawnMessage) async {
data = JSFunction.fromAddress(
msg['ctx'],
msg['val'],
).invoke(_decodeData(msg['args'], null));
break;
case 'setToGlobalObject':
qjs.setToGlobalObject(msg['key'], msg['val']);
).invoke(
_decodeData(msg['args'], null),
_decodeData(msg['this'], null),
);
break;
case 'close':
qjs.port.close();
@@ -210,7 +279,8 @@ void _runJsIsolate(Map spawnMessage) async {
'error': e.toString() + "\n" + stack.toString(),
});
}
}
});
await qjs.dispatch();
}
typedef JsAsyncModuleHandler = Future<String> Function(String name);
@@ -290,6 +360,12 @@ class IsolateQjs {
_sendPort = completer.future;
}
/// Create isolate function
Future<IsolateFunction> bind(Function func) async {
_ensureEngine();
return IsolateFunction.bind(func, await _sendPort);
}
/// Free Runtime and close isolate thread that can be recreate when evaluate again.
close() {
if (_sendPort == null) return;
@@ -301,23 +377,6 @@ class IsolateQjs {
_sendPort = null;
}
setToGlobalObject(dynamic key, dynamic val) async {
_ensureEngine();
var evaluatePort = ReceivePort();
var sendPort = await _sendPort;
sendPort.send({
'type': 'setToGlobalObject',
'key': key,
'val': val,
'port': evaluatePort.sendPort,
});
var result = await evaluatePort.first;
if (result['error'] == null) {
return;
} else
throw result['error'];
}
/// Evaluate js script.
Future<dynamic> evaluate(String command, {String name, int evalFlags}) async {
_ensureEngine();
@@ -331,6 +390,7 @@ class IsolateQjs {
'port': evaluatePort.sendPort,
});
var result = await evaluatePort.first;
evaluatePort.close();
if (result['error'] == null) {
return _decodeData(result['data'], sendPort);
} else

24
lib/wrapper.dart
View File

@@ -12,6 +12,7 @@ import 'dart:typed_data';
import 'package:ffi/ffi.dart';
import 'ffi.dart';
import 'isolate.dart';
class JSRefValue implements JSRef {
Pointer val;
@@ -37,6 +38,14 @@ class JSRefValue implements JSRef {
}
}
abstract class QjsReleasable {
void release();
}
abstract class QjsInvokable {
dynamic invoke(List positionalArguments, [dynamic thisVal]);
}
class DartObject implements JSRef {
Object obj;
Pointer ctx;
@@ -53,6 +62,7 @@ class DartObject implements JSRef {
@override
void release() {
if (obj is QjsReleasable) (obj as QjsReleasable).release();
obj = null;
ctx = null;
}
@@ -90,19 +100,19 @@ class JSPromise extends JSRefValue {
}
}
class JSFunction extends JSRefValue {
class JSFunction extends JSRefValue implements QjsInvokable {
JSFunction(Pointer ctx, Pointer val) : super(ctx, val);
JSFunction.fromAddress(int ctx, int val) : super.fromAddress(ctx, val);
invoke(List<dynamic> arguments) {
invoke(List<dynamic> arguments, [dynamic thisVal]) {
if (val == null) return;
List<Pointer> args = arguments
.map(
(e) => dartToJs(ctx, e),
)
.toList();
Pointer jsRet = jsCall(ctx, val, null, args);
Pointer jsRet = jsCall(ctx, val, dartToJs(ctx, thisVal), args);
for (Pointer jsArg in args) {
jsFreeValue(ctx, jsArg);
}
@@ -118,7 +128,10 @@ class JSFunction extends JSRefValue {
@override
noSuchMethod(Invocation invocation) {
return invoke(invocation.positionalArguments);
return invoke(
invocation.positionalArguments,
invocation.namedArguments[#thisVal],
);
}
}
@@ -228,7 +241,7 @@ Pointer dartToJs(Pointer ctx, dynamic val, {Map<dynamic, dynamic> cache}) {
dartObjectClassId,
identityHashCode(DartObject(ctx, val)),
);
if (val is Function) {
if (val is Function || val is IsolateFunction) {
final ret = jsNewCFunction(ctx, dartObject);
jsFreeValue(ctx, dartObject);
return ret;
@@ -343,6 +356,7 @@ Pointer jsNewContextWithPromsieWrapper(Pointer rt) {
jsFreeValue(ctx, jsPromiseWrapper);
runtimeOpaque.promiseToFuture = (promise) {
var completer = Completer();
completer.future.catchError((e) {});
var wrapper = promiseWrapper.val;
if (wrapper == null)
completer.completeError(Exception("Runtime has been released!"));