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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift open source project
//
// Copyright (c) 2025 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
//
//===----------------------------------------------------------------------===//
public import SWBUtil
/// A format for how dependency information is communicated from a rule.
public enum DependencyInfo: CustomDebugStringConvertible, Sendable {
/// A Darwin linker style dependency info file.
case dependencyInfo(MacroExpressionSource)
/// A '.d'-style Makefile.
case makefile(MacroExpressionSource)
/// A list of multiple '.d'-style Makefiles.
case makefiles([MacroExpressionSource])
private enum DependencyInfoCode: UInt, Serializable {
case dependencyInfo = 0
case makefile = 1
case makefiles = 2
}
public var debugDescription: String {
switch self {
case .dependencyInfo(let path): return ".dependencyInfo(\(path))"
case .makefile(let path): return ".makefile(\(path))"
case .makefiles(let paths): return ".makefiles(\(paths))"
}
}
}
// MARK: SerializableCodable
extension DependencyInfo: PendingSerializableCodable {
public func legacySerialize<T: Serializer>(to serializer: T) {
serializer.serializeAggregate(2) {
switch self {
case .dependencyInfo(let path):
serializer.serialize(DependencyInfoCode.dependencyInfo)
serializer.serialize(path)
case .makefile(let path):
serializer.serialize(DependencyInfoCode.makefile)
serializer.serialize(path)
case .makefiles(let paths):
serializer.serialize(DependencyInfoCode.makefiles)
serializer.serialize(paths)
}
}
}
public init(fromLegacy deserializer: any Deserializer) throws {
try deserializer.beginAggregate(2)
switch try deserializer.deserialize() as DependencyInfoCode {
case .dependencyInfo:
self = .dependencyInfo(try deserializer.deserialize())
case .makefile:
self = .makefile(try deserializer.deserialize())
case .makefiles:
self = .makefiles(try deserializer.deserialize())
}
}
}
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