//
// Copyright 2010-2020 Amazon.com, Inc. or its affiliates. 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.
// A copy of the License is located at
//
// http://aws.amazon.com/apache2.0
//
// or in the "license" file accompanying this file. This file 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.
//

// Copied from Amplify and internal for internal usage

extension AtomicValue where Value: RangeReplaceableCollection {
    func append(_ newElement: Value.Element) {
        lock.lock()
        defer {
            lock.unlock()
        }
        value.append(newElement)
    }

    func append<S>(contentsOf sequence: S) where S: Sequence, S.Element == Value.Element {
        lock.lock()
        defer {
            lock.unlock()
        }
        value.append(contentsOf: sequence)
    }

    func removeFirst() -> Value.Element {
        lock.lock()
        defer {
            lock.unlock()
        }
        return value.removeFirst()
    }

    subscript(_ key: Value.Index) -> Value.Element {
        lock.lock()
        defer {
            lock.unlock()
        }
        return value[key]
    }
}