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3e8d266e8a
This helper makes it considerably easier for C++ code to import a JS module
and wrap it in an appropriately-defined XPIDL interface for its exports.
Typical usage is something like:
Foo.jsm:
var EXPORTED_SYMBOLS = ["foo"];
function foo(bar) {
return bar.toString();
}
mozIFoo.idl:
interface mozIFoo : nsISupports {
AString foo(double meh);
}
Thing.cpp:
nsCOMPtr<mozIFoo> foo = do_ImportModule(
"resource://meh/Foo.jsm");
MOZ_TRY(foo->Foo(42));
Differential Revision: https://phabricator.services.mozilla.com/D14209
--HG--
extra : rebase_source : 4d518205b173fc210908235b42ddace590e6b7e5
35 lines
1.1 KiB
C++
35 lines
1.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsImportModule.h"
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#include "mozilla/ResultExtensions.h"
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#include "mozilla/dom/ScriptSettings.h"
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#include "mozJSComponentLoader.h"
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#include "xpcpublic.h"
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#include "xpcprivate.h"
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using mozilla::dom::AutoJSAPI;
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namespace mozilla {
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namespace loader {
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nsresult ImportModule(const char* aURI, const nsIID& aIID, void** aResult) {
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AutoJSAPI jsapi;
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MOZ_ALWAYS_TRUE(jsapi.Init(xpc::PrivilegedJunkScope()));
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JSContext* cx = jsapi.cx();
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JS::RootedObject global(cx);
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JS::RootedObject exports(cx);
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MOZ_TRY(mozJSComponentLoader::Get()->Import(cx, nsDependentCString(aURI),
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&global, &exports));
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return nsXPConnect::XPConnect()->WrapJS(cx, exports, aIID, aResult);
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}
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} // namespace loader
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} // namespace mozilla
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