1 files changed, 108 insertions, 0 deletions
diff --git a/js/src/builtin/streams/WritableStreamDefaultControllerOperations.h b/js/src/builtin/streams/WritableStreamDefaultControllerOperations.h
new file mode 100644
index 0000000000..90756b25bc
--- /dev/null
+++ b/js/src/builtin/streams/WritableStreamDefaultControllerOperations.h
@@ -0,0 +1,108 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set ts=8 sts=2 et sw=2 tw=80:
+ * 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/. */
+
+/* Writable stream default controller abstract operations. */
+
+#ifndef builtin_streams_WritableStreamDefaultControllerOperations_h
+#define builtin_streams_WritableStreamDefaultControllerOperations_h
+
+#include "mozilla/Attributes.h"  // MOZ_MUST_USE
+
+#include "jstypes.h"        // JS_PUBLIC_API
+#include "js/RootingAPI.h"  // JS::Handle
+#include "js/Value.h"       // JS::Value
+
+struct JS_PUBLIC_API JSContext;
+
+namespace js {
+
+class WritableStream;
+class WritableStreamDefaultController;
+
+extern JSObject* WritableStreamControllerAbortSteps(
+    JSContext* cx,
+    JS::Handle<WritableStreamDefaultController*> unwrappedController,
+    JS::Handle<JS::Value> reason);
+
+extern MOZ_MUST_USE bool WritableStreamControllerErrorSteps(
+    JSContext* cx,
+    JS::Handle<WritableStreamDefaultController*> unwrappedController);
+
+extern MOZ_MUST_USE bool WritableStreamControllerStartHandler(JSContext* cx,
+                                                              unsigned argc,
+                                                              JS::Value* vp);
+
+extern MOZ_MUST_USE bool WritableStreamControllerStartFailedHandler(
+    JSContext* cx, unsigned argc, JS::Value* vp);
+
+/**
+ * Characterizes the family of algorithms, (startAlgorithm, writeAlgorithm,
+ * closeAlgorithm, abortAlgorithm), associated with a writable stream.
+ *
+ * See the comment on SetUpWritableStreamDefaultController().
+ */
+enum class SinkAlgorithms {
+  Script,
+  Transform,
+};
+
+extern MOZ_MUST_USE bool SetUpWritableStreamDefaultController(
+    JSContext* cx, JS::Handle<WritableStream*> stream,
+    SinkAlgorithms algorithms, JS::Handle<JS::Value> underlyingSink,
+    JS::Handle<JS::Value> writeMethod, JS::Handle<JS::Value> closeMethod,
+    JS::Handle<JS::Value> abortMethod, double highWaterMark,
+    JS::Handle<JS::Value> size);
+
+extern MOZ_MUST_USE bool SetUpWritableStreamDefaultControllerFromUnderlyingSink(
+    JSContext* cx, JS::Handle<WritableStream*> stream,
+    JS::Handle<JS::Value> underlyingSink, double highWaterMark,
+    JS::Handle<JS::Value> sizeAlgorithm);
+
+extern void WritableStreamDefaultControllerClearAlgorithms(
+    WritableStreamDefaultController* unwrappedController);
+
+extern MOZ_MUST_USE bool WritableStreamDefaultControllerClose(
+    JSContext* cx,
+    JS::Handle<WritableStreamDefaultController*> unwrappedController);
+
+extern MOZ_MUST_USE bool WritableStreamDefaultControllerGetChunkSize(
+    JSContext* cx,
+    JS::Handle<WritableStreamDefaultController*> unwrappedController,
+    JS::Handle<JS::Value> chunk, JS::MutableHandle<JS::Value> returnValue);
+
+extern double WritableStreamDefaultControllerGetDesiredSize(
+    const WritableStreamDefaultController* controller);
+
+extern MOZ_MUST_USE bool WritableStreamDefaultControllerWrite(
+    JSContext* cx,
+    JS::Handle<WritableStreamDefaultController*> unwrappedController,
+    JS::Handle<JS::Value> chunk, JS::Handle<JS::Value> chunkSize);
+
+extern MOZ_MUST_USE bool WritableStreamDefaultControllerErrorIfNeeded(
+    JSContext* cx,
+    JS::Handle<WritableStreamDefaultController*> unwrappedController,
+    JS::Handle<JS::Value> error);
+
+extern MOZ_MUST_USE bool WritableStreamDefaultControllerProcessClose(
+    JSContext* cx,
+    JS::Handle<WritableStreamDefaultController*> unwrappedController);
+
+extern MOZ_MUST_USE bool WritableStreamDefaultControllerProcessWrite(
+    JSContext* cx,
+    JS::Handle<WritableStreamDefaultController*> unwrappedController,
+    JS::Handle<JS::Value> chunk);
+
+extern bool WritableStreamDefaultControllerGetBackpressure(
+    const WritableStreamDefaultController* unwrappedController);
+
+extern MOZ_MUST_USE bool WritableStreamDefaultControllerError(
+    JSContext* cx,
+    JS::Handle<WritableStreamDefaultController*> unwrappedController,
+    JS::Handle<JS::Value> error);
+
+}  // namespace js
+
+#endif  // builtin_streams_WritableStreamDefaultControllerOperations_h