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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift open source project
//
// Copyright (c) 2014-2023 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See http://swift.org/LICENSE.txt for license information
// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
/// A result which can be loaded.
///
/// It is useful for objects that hold a state on disk and need to be
/// loaded frequently.
public final class LoadableResult<Value> {
/// The constructor closure for the value.
private let construct: () throws -> Value
/// Create a loadable result.
public init(_ construct: @escaping () throws -> Value) {
self.construct = construct
}
/// Load and return the result.
public func loadResult() -> Result<Value, Error> {
Result(catching: {
try self.construct()
})
}
/// Load and return the value.
public func load() throws -> Value {
try self.loadResult().get()
}
}
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