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/*
* 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_PROMISE_H_
#define COBALT_SCRIPT_PROMISE_H_
#include "base/memory/ref_counted.h"
#include "cobalt/script/exception_message.h"
#include "cobalt/script/script_exception.h"
#include "cobalt/script/script_value.h"
namespace cobalt {
namespace script {
// Interface for interacting with a JavaScript Promise object that is resolved
// or rejected from native code.
template <typename T>
class Promise {
public:
// Call the |resolve| function that was passed as an argument to the Promise's
// executor function supplying |result| as its argument.
virtual void Resolve(const T& result) const = 0;
// Call the |reject| function passed as an argument to the Promise's executor
// function.
virtual void Reject() const = 0;
virtual void Reject(SimpleExceptionType exception) const = 0;
virtual void Reject(const scoped_refptr<ScriptException>& result) const = 0;
virtual ~Promise() {}
};
// Specialization of the Promise<T> class for Promise<void>, which does not take
// a value for the Resolve function.
template <>
class Promise<void> {
public:
// Call the |resolve| function passed as an argument to the Promise's executor
// function.
virtual void Resolve() const = 0;
// Call the |reject| function passed as an argument to the Promise's executor
// function.
virtual void Reject() const = 0;
virtual void Reject(SimpleExceptionType exception) const = 0;
virtual void Reject(const scoped_refptr<ScriptException>& result) const = 0;
virtual ~Promise() {}
};
} // namespace script
} // namespace cobalt
#endif // COBALT_SCRIPT_PROMISE_H_