| // Copyright 2017 Google Inc. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #ifndef COBALT_SCRIPT_MOZJS_45_MOZJS_VALUE_HANDLE_H_ |
| #define COBALT_SCRIPT_MOZJS_45_MOZJS_VALUE_HANDLE_H_ |
| |
| #include "base/optional.h" |
| #include "cobalt/script/mozjs-45/mozjs_user_object_holder.h" |
| #include "cobalt/script/mozjs-45/type_traits.h" |
| #include "cobalt/script/mozjs-45/weak_heap_object.h" |
| #include "cobalt/script/value_handle.h" |
| #include "third_party/mozjs-45/js/src/jsapi.h" |
| |
| namespace cobalt { |
| namespace script { |
| namespace mozjs { |
| |
| // A wrapper around a JS::Value that can be passed into Cobalt as an script |
| // value object. |
| // |
| // An ValueHandle is never passed into Cobalt as-is, but only when wrapped as a |
| // ScriptValue<ValueHandle>. |
| class MozjsValueHandle : public ValueHandle { |
| public: |
| typedef ValueHandle BaseType; |
| JSObject* handle() const { return handle_.GetObject(); } |
| const JS::Value& value() const { return handle_.GetValue(); } |
| bool WasCollected() const { return handle_.WasCollected(); } |
| |
| private: |
| MozjsValueHandle(JSContext* context, JS::HandleValue object) |
| : handle_(context, object) {} |
| ~MozjsValueHandle() {} |
| |
| WeakHeapObject handle_; |
| |
| friend class MozjsUserObjectHolder<MozjsValueHandle>; |
| friend class base::optional<MozjsValueHandle>; |
| }; |
| |
| typedef MozjsUserObjectHolder<MozjsValueHandle> MozjsValueHandleHolder; |
| |
| template <> |
| struct TypeTraits<ValueHandle> { |
| typedef MozjsValueHandleHolder ConversionType; |
| typedef const ScriptValue<ValueHandle>* ReturnType; |
| }; |
| |
| } // namespace mozjs |
| } // namespace script |
| } // namespace cobalt |
| |
| #endif // COBALT_SCRIPT_MOZJS_45_MOZJS_VALUE_HANDLE_H_ |