| // Copyright 2016 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_CONVERT_CALLBACK_RETURN_VALUE_H_ |
| #define COBALT_SCRIPT_MOZJS_CONVERT_CALLBACK_RETURN_VALUE_H_ |
| |
| #include "base/logging.h" |
| #include "cobalt/script/callback_function.h" |
| #include "cobalt/script/logging_exception_state.h" |
| #include "cobalt/script/mozjs/conversion_helpers.h" |
| #include "third_party/mozjs/js/src/jsapi.h" |
| |
| namespace cobalt { |
| namespace script { |
| namespace mozjs { |
| |
| // Helper template functions for Callback functions' return values before being |
| // returned to Cobalt. |
| // Converts the return value from JavaScript into the correct Cobalt type, or |
| // sets the exception bit if conversion fails. |
| template <typename R> |
| CallbackResult<R> ConvertCallbackReturnValue(JSContext* context, |
| JS::HandleValue value) { |
| // TODO: Pass conversion flags to callback function return value if |
| // appropriate. |
| const int kConversionFlags = 0; |
| CallbackResult<R> callback_result; |
| LoggingExceptionState exception_state; |
| FromJSValue(context, value, kConversionFlags, &exception_state, |
| &callback_result.result); |
| callback_result.exception = exception_state.is_exception_set(); |
| return callback_result; |
| } |
| |
| template <> |
| inline CallbackResult<void> ConvertCallbackReturnValue(JSContext* context, |
| JS::HandleValue value) { |
| // No conversion necessary. |
| return CallbackResult<void>(); |
| } |
| |
| } // namespace mozjs |
| } // namespace script |
| } // namespace cobalt |
| |
| #endif // COBALT_SCRIPT_MOZJS_CONVERT_CALLBACK_RETURN_VALUE_H_ |