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host promise rejection

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This commit is contained in:
ekibun
2021-01-23 01:19:56 +08:00
parent c7da8abb67
commit 1589f87194
6 changed files with 107 additions and 27 deletions
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39
lib/flutter_qjs.dart
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@@ -19,6 +19,9 @@ typedef JsMethodHandler = dynamic Function(String method, List args);
/// Handler function to manage js module.
typedef JsModuleHandler = String Function(String name);
/// Handler to manage unhandled promise rejection.
typedef JsHostPromiseRejectionHandler = void Function(String reason);
class FlutterQjs {
Pointer _rt;
Pointer _ctx;
@@ -35,10 +38,17 @@ class FlutterQjs {
/// Handler function to manage js module.
JsModuleHandler moduleHandler;
/// Handler function to manage js module.
JsHostPromiseRejectionHandler hostPromiseRejectionHandler;
/// Quickjs engine for flutter.
///
/// Pass handlers to implement js-dart interaction and resolving modules.
FlutterQjs({this.methodHandler, this.moduleHandler, this.stackSize});
FlutterQjs(
{this.methodHandler,
this.moduleHandler,
this.stackSize,
this.hostPromiseRejectionHandler});
_ensureEngine() {
if (_rt != null) return;
@@ -51,14 +61,22 @@ class FlutterQjs {
runtimeOpaques[rt]?.ref?.remove(obj);
return Pointer.fromAddress(0);
}
if (argv.address != 0 && method.address != 0) {
if (argv.address != 0) {
if (method.address == ctx.address) {
final errStr = parseJSException(ctx, perr: argv);
if (hostPromiseRejectionHandler != null) {
hostPromiseRejectionHandler(errStr);
} else {
print("unhandled promise rejection: $errStr");
}
return Pointer.fromAddress(0);
}
if (methodHandler == null) throw Exception("No MethodHandler");
var argvs = jsToDart(ctx, argv);
return dartToJs(
ctx,
methodHandler(
Utf8.fromUtf8(method.cast<Utf8>()),
argvs,
jsToDart(ctx, argv),
));
}
if (moduleHandler == null) throw Exception("No ModuleHandler");
@@ -69,11 +87,20 @@ class FlutterQjs {
});
return ret;
} catch (e, stack) {
final errStr = e.toString() + "\n" + stack.toString();
if (method.address == 0) {
print("DartObject release error: " + errStr);
return Pointer.fromAddress(0);
}
if (method.address == ctx.address) {
print("host Promise Rejection Handler error: " + errStr);
return Pointer.fromAddress(0);
}
var err = jsThrowInternalError(
ctx,
e.toString() + "\n" + stack.toString(),
errStr,
);
if (method.address == 0) {
if (argv.address == 0) {
jsFreeValue(ctx, err);
return Pointer.fromAddress(0);
}