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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift open source project
//
// Copyright (c) 2024 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
//
//===----------------------------------------------------------------------===//
extension Package.Dependency {
/// A struct representing an enabled trait of a dependency.
@available(_PackageDescription, introduced: 6.1)
public struct Trait: Hashable, Sendable, ExpressibleByStringLiteral {
/// Enables all default traits of a package.
public static let defaults = Self.init(name: "default")
/// A condition that limits the application of a dependencies trait.
public struct Condition: Hashable, Sendable {
/// The set of traits of this package that enable the dependencie's trait.
let traits: Set<String>?
/// Creates a package dependency trait condition.
///
/// - Parameter traits: The set of traits that enable the dependencies trait. If any of the traits are enabled on this package
/// the dependencies trait will be enabled.
public static func when(
traits: Set<String>
) -> Self? {
return !traits.isEmpty ? Self(traits: traits) : nil
}
}
/// The name of the enabled trait.
public var name: String
/// The condition under which the trait is enabled.
public var condition: Condition?
/// Initializes a new enabled trait.
///
/// - Parameters:
/// - name: The name of the enabled trait.
/// - condition: The condition under which the trait is enabled.
public init(
name: String,
condition: Condition? = nil
) {
self.name = name
self.condition = condition
}
public init(stringLiteral value: StringLiteralType) {
self.init(name: value)
}
/// Initializes a new enabled trait.
///
/// - Parameters:
/// - name: The name of the enabled trait.
/// - condition: The condition under which the trait is enabled.
public static func trait(
name: String,
condition: Condition? = nil
) -> Trait {
self.init(
name: name,
condition: condition
)
}
}
}
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