Issue #1283 - Implement Promise.prototype.finally()

This resolves #1283.

1 files changed, 19 insertions, 0 deletions

diff --git a/js/src/vm/SelfHosting.cpp b/js/src/vm/SelfHosting.cpp
index 82d2cde642..8334104652 100644
--- a/js/src/vm/SelfHosting.cpp
+++ b/js/src/vm/SelfHosting.cpp
@@ -2102,6 +2102,21 @@ intrinsic_ModuleNamespaceExports(JSContext* cx, unsigned argc, Value* vp)
     return true;
 }
 
+static bool
+intrinsic_PromiseResolve(JSContext* cx, unsigned argc, Value* vp)
+{
+    CallArgs args = CallArgsFromVp(argc, vp);
+    MOZ_ASSERT(args.length() == 2);
+
+    RootedObject constructor(cx, &args[0].toObject());
+    JSObject* promise = js::PromiseResolve(cx, constructor, args[1]);
+    if (!promise)
+        return false;
+
+    args.rval().setObject(*promise);
+    return true;
+}
+
 // The self-hosting global isn't initialized with the normal set of builtins.
 // Instead, individual C++-implemented functions that're required by
 // self-hosted code are defined as global functions. Accessing these
@@ -2498,6 +2513,10 @@ static const JSFunctionSpec intrinsic_functions[] = {
     JS_FN("AddModuleNamespaceBinding", intrinsic_AddModuleNamespaceBinding, 4, 0),
     JS_FN("ModuleNamespaceExports", intrinsic_ModuleNamespaceExports, 1, 0),
 
+    JS_FN("IsPromiseObject", intrinsic_IsInstanceOfBuiltin<PromiseObject>, 1, 0),
+    JS_FN("CallPromiseMethodIfWrapped", CallNonGenericSelfhostedMethod<Is<PromiseObject>>, 2, 0),
+    JS_FN("PromiseResolve", intrinsic_PromiseResolve, 2, 0),
+
     JS_FS_END
 };