EXT4+Ptr.swift

//===----------------------------------------------------------------------===//
// Copyright © 2025-2026 Apple Inc. and the Containerization project authors.
//
// 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
//
//   https://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.
//===----------------------------------------------------------------------===//

extension EXT4 {
    class Ptr<T> {
        let underlying: UnsafeMutablePointer<T>

        var pointee: T {
            get { underlying.pointee }
            set { underlying.pointee = newValue }
        }

        init(_ value: T) {
            self.underlying = .allocate(capacity: 1)
            self.underlying.initialize(to: value)
        }

        deinit {
            underlying.deinitialize(count: 1)
            underlying.deallocate()
        }
    }
}