Bug 1331092 - Part 2: Implement Async Generator except yield*.

Tag #1287

2 files changed, 24 insertions, 0 deletions

diff --git a/js/src/builtin/AsyncIteration.js b/js/src/builtin/AsyncIteration.js
new file mode 100644
index 000000000..029c7c0f8
--- /dev/null
+++ b/js/src/builtin/AsyncIteration.js
@@ -0,0 +1,7 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+function AsyncIteratorIdentity() {
+    return this;
+}
diff --git a/js/src/builtin/Promise.h b/js/src/builtin/Promise.h
index 8f716dfbc..680ab2abd 100644
--- a/js/src/builtin/Promise.h
+++ b/js/src/builtin/Promise.h
@@ -151,6 +151,23 @@ AsyncFunctionThrown(JSContext* cx, Handle<PromiseObject*> resultPromise);
 MOZ_MUST_USE bool
 AsyncFunctionAwait(JSContext* cx, Handle<PromiseObject*> resultPromise, HandleValue value);
 
+class AsyncGeneratorObject;
+
+MOZ_MUST_USE bool
+AsyncGeneratorAwait(JSContext* cx, Handle<AsyncGeneratorObject*> asyncGenObj, HandleValue value);
+
+MOZ_MUST_USE bool
+AsyncGeneratorResolve(JSContext* cx, Handle<AsyncGeneratorObject*> asyncGenObj,
+                      HandleValue value, bool done);
+
+MOZ_MUST_USE bool
+AsyncGeneratorReject(JSContext* cx, Handle<AsyncGeneratorObject*> asyncGenObj,
+                     HandleValue exception);
+
+MOZ_MUST_USE bool
+AsyncGeneratorEnqueue(JSContext* cx, HandleValue asyncGenVal, CompletionKind completionKind,
+                      HandleValue completionValue, MutableHandleValue result);
+
 /**
  * A PromiseTask represents a task that can be dispatched to a helper thread
  * (via StartPromiseTask), executed (by implementing PromiseTask::execute()),