pkl-swift/Sources/MessagePack/Box.swift

85 lines
2.5 KiB
Swift

//===----------------------------------------------------------------------===//
// Copyright © 2024-2025 Apple Inc. and the Pkl project authors. 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
//
// 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.
//===----------------------------------------------------------------------===//
import Foundation
struct Box<Value> {
let value: Value
init(_ value: Value) {
self.value = value
}
}
extension Box: Encodable where Value: Encodable {
func encode(to encoder: Encoder) throws {
try self.value.encode(to: encoder)
}
}
extension Box: Decodable where Value: Decodable {
init(from decoder: Decoder) throws {
try self.init(Value(from: decoder))
}
}
extension Box where Value == Data {
init(from decoder: Decoder) throws {
let container = try decoder.singleValueContainer()
try self.init(container.decode(Value.self))
}
func encode(to encoder: Encoder) throws {
var container = encoder.singleValueContainer()
try container.encode(self.value)
}
}
extension Box where Value == Date {
init(from decoder: Decoder) throws {
let container = try decoder.singleValueContainer()
try self.init(container.decode(Value.self))
}
func encode(to encoder: Encoder) throws {
var container = encoder.singleValueContainer()
try container.encode(self.value)
}
}
extension Box where Value == [UInt8] {
init(from decoder: Decoder) throws {
let container = try decoder.singleValueContainer()
try self.init(container.decode(Value.self))
}
func encode(to encoder: Encoder) throws {
var container = encoder.singleValueContainer()
try container.encode(self.value)
}
}
extension Box where Value == URL {
init(from decoder: Decoder) throws {
let container = try decoder.singleValueContainer()
try self.init(container.decode(Value.self))
}
func encode(to encoder: Encoder) throws {
var container = encoder.singleValueContainer()
try container.encode(self.value)
}
}