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// Make sure we don't crash when verifying.
// RUN: %target-swift-frontend -emit-ir %s -Onone -sil-verify-all \
// RUN: -Xllvm -sil-print-debuginfo -o - 2>&1 | %FileCheck %s
// CHECK: define hidden swiftcc {{.*}} @"$s4main18DependencyResolverC14resolveSubtree_9excludings11AnySequenceVyAA20VersionAssignmentSetVy9ContainerQzGGAK_SDyAJ_10IdentifierQZShyAA0I0VGGtF"
public struct Version {
public let major: Int
public let minor: Int
public let patch: Int
public let prereleaseIdentifiers: [String]
public let buildMetadataIdentifiers: [String]
public init(
_ major: Int,
_ minor: Int,
_ patch: Int,
prereleaseIdentifiers: [String] = [],
buildMetadataIdentifiers: [String] = []
) {
self.major = major
self.minor = minor
self.patch = patch
self.prereleaseIdentifiers = prereleaseIdentifiers
self.buildMetadataIdentifiers = buildMetadataIdentifiers
}
}
extension Version: Hashable {
static public func == (lhs: Version, rhs: Version) -> Bool {
return lhs.major == rhs.major &&
lhs.buildMetadataIdentifiers == rhs.buildMetadataIdentifiers
}
public func hash(into hasher: inout Hasher) {
hasher.combine(major)
hasher.combine(buildMetadataIdentifiers)
}
}
public protocol PackageContainerIdentifier: Hashable { }
public protocol PackageContainer {
associatedtype Identifier: PackageContainerIdentifier
var identifier: Identifier { get }
}
public protocol PackageContainerProvider {
associatedtype Container: PackageContainer
func getContainer(
)
}
public struct PackageContainerConstraint<T: PackageContainerIdentifier> {
public enum Requirement: Hashable {
}
}
public enum BoundVersion {
case version(Version)
}
struct VersionAssignmentSet<C: PackageContainer> {
typealias Container = C
typealias Identifier = Container.Identifier
fileprivate var assignments: [Identifier: (container: Container, binding: BoundVersion)]
init() {
assignments = [:]
}
subscript(identifier: Identifier) -> BoundVersion? {
get {
return assignments[identifier]?.binding
}
}
subscript(container: Container) -> BoundVersion? {
get {
return self[container.identifier]
}
set {
}
}
}
public class DependencyResolver<P: PackageContainerProvider> {
public typealias Provider = P
public typealias Container = Provider.Container
public typealias Identifier = Container.Identifier
public typealias Constraint = PackageContainerConstraint<Identifier>
typealias AssignmentSet = VersionAssignmentSet<Container>
public let provider: Provider
private let isPrefetchingEnabled: Bool
private let skipUpdate: Bool
public init(
_ provider: Provider,
isPrefetchingEnabled: Bool = false,
skipUpdate: Bool = false
) {
self.provider = provider
self.isPrefetchingEnabled = isPrefetchingEnabled
self.skipUpdate = skipUpdate
}
func resolveSubtree(
_ container: Container,
excluding allExclusions: [Identifier: Set<Version>]
) -> AnySequence<AssignmentSet> {
func merge(constraints: [Constraint], binding: BoundVersion) -> AnySequence<AssignmentSet> {
var assignment = AssignmentSet()
assignment[container] = binding
return AnySequence([])
}
return AnySequence([])
}
}
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