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//===--- Conformance.swift ------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2024 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
import Basic
import ASTBridging
/// Describes how a particular type conforms to a given protocol, providing the mapping from the protocol
/// members to the type (or extension) members that provide the functionality for the concrete type.
///
/// TODO: Ideally, `Conformance` should be an enum
public struct Conformance: CustomStringConvertible, NoReflectionChildren {
public let bridged: BridgedConformance
public init(bridged: BridgedConformance) {
self.bridged = bridged
}
public var description: String {
return String(taking: bridged.getDebugDescription())
}
public var isConcrete: Bool { bridged.isConcrete() }
public var isValid: Bool { bridged.isValid() }
public var type: Type {
assert(isConcrete)
return Type(bridged: bridged.getType())
}
public var proto: ProtocolDecl {
return bridged.getRequirement().getAs(ProtocolDecl.self)
}
public var isSpecialized: Bool {
assert(isConcrete)
return bridged.isSpecializedConformance()
}
public var genericConformance: Conformance {
assert(isSpecialized)
return bridged.getGenericConformance().conformance
}
public var isInherited: Bool {
assert(isConcrete)
return bridged.isInheritedConformance()
}
public var inheritedConformance: Conformance {
assert(isInherited)
return bridged.getInheritedConformance().conformance
}
public var rootConformance: Conformance {
if isInherited {
return inheritedConformance.rootConformance
}
if isSpecialized {
return genericConformance
}
return self
}
public var specializedSubstitutions: SubstitutionMap {
assert(isSpecialized)
return SubstitutionMap(bridged: bridged.getSpecializedSubstitutions())
}
public func getAssociatedConformance(ofAssociatedType assocType: Type, to proto: ProtocolDecl) -> Conformance {
assert(isConcrete)
return bridged.getAssociatedConformance(assocType.bridged, proto.bridged).conformance
}
}
public struct ConformanceArray : RandomAccessCollection, CustomReflectable {
public let bridged: BridgedConformanceArray
public var startIndex: Int { return 0 }
public var endIndex: Int { return bridged.getCount() }
public init(bridged: BridgedConformanceArray) {
self.bridged = bridged
}
public subscript(_ index: Int) -> Conformance {
bridged.getAt(index).conformance
}
public var customMirror: Mirror {
let c: [Mirror.Child] = map { (label: nil, value: $0) }
return Mirror(self, children: c)
}
}
extension BridgedConformance {
public var conformance: Conformance { Conformance(bridged: self) }
}
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