build without Foundation for embedded use

Examples/OCADevice/DeviceApp.swift

@@ -38,7 +38,7 @@ public enum DeviceApp {
   public static func main() async throws {
     var listenAddress = sockaddr_in()
     listenAddress.sin_family = sa_family_t(AF_INET)
-    listenAddress.sin_addr.s_addr = 0  // INADDR_ANY equivalent
+    listenAddress.sin_addr.s_addr = 0 // INADDR_ANY equivalent
     listenAddress.sin_port = port.bigEndian
     #if canImport(Darwin) || os(FreeBSD) || os(OpenBSD)
     listenAddress.sin_len = UInt8(MemoryLayout<sockaddr_in>.size)
@@ -61,7 +61,8 @@ public enum DeviceApp {
     }
     let delegate = DeviceEventDelegate()
     await device.setEventDelegate(delegate)
-    #if os(Linux)
+
+    #if os(Linux) && NonEmbeddedBuild
     let streamEndpoint = try await Ocp1IORingStreamDeviceEndpoint(address: listenAddress.data)
     let datagramEndpoint = try await Ocp1IORingDatagramDeviceEndpoint(address: listenAddress.data)
     let stream6Endpoint = try await Ocp1IORingStreamDeviceEndpoint(address: listen6Address.data)
@@ -70,7 +71,7 @@ public enum DeviceApp {
       try? await Ocp1IORingStreamDeviceEndpoint(path: "/tmp/oca-device.sock")
     let domainSocketDatagramEndpoint =
       try? await Ocp1IORingDatagramDeviceEndpoint(path: "/tmp/oca-device-dg.sock")
-    #elseif canImport(FlyingSocks)
+    #elseif canImport(FlyingSocks) && NonEmbeddedBuild
     let streamEndpoint = try await Ocp1FlyingSocksStreamDeviceEndpoint(address: listenAddress.data)
     let datagramEndpoint =
       try await Ocp1FlyingSocksDatagramDeviceEndpoint(address: listenAddress.data)
@@ -87,9 +88,10 @@ public enum DeviceApp {
     #else
     let streamEndpoint = try await Ocp1StreamDeviceEndpoint(address: listenAddress.data)
     #endif
-    #if canImport(FlyingSocks)
+
+    #if canImport(FlyingFox) && NonEmbeddedBuild
     listenAddress.sin_family = sa_family_t(AF_INET)
-    listenAddress.sin_addr.s_addr = 0  // INADDR_ANY equivalent
+    listenAddress.sin_addr.s_addr = 0 // INADDR_ANY equivalent
     listenAddress.sin_port = (port + 2).bigEndian
     #if canImport(Darwin) || os(FreeBSD) || os(OpenBSD)
     listenAddress.sin_len = UInt8(MemoryLayout<sockaddr_in>.size)
@@ -132,7 +134,9 @@ public enum DeviceApp {
     )
     try await block.add(actionObject: gain)
 
+    #if NonEmbeddedBuild
     try await serializeDeserialize(device.rootBlock)
+    #endif
 
     let controlNetwork = try await SwiftOCADevice.OcaControlNetwork(deviceDelegate: device)
     Task { @OcaDevice in controlNetwork.state = .running }
@@ -145,6 +149,7 @@ public enum DeviceApp {
       }
     }
 
+    #if NonEmbeddedBuild
     try await withThrowingTaskGroup(of: Void.self) { taskGroup in
       taskGroup.addTask {
         print("Starting OCP.1 IPv4 stream endpoint \(streamEndpoint)...")
@@ -186,9 +191,14 @@ public enum DeviceApp {
       #endif
       try await taskGroup.next()
     }
+    #else
+    print("Starting OCP.1 IPv4 stream endpoint \(streamEndpoint)...")
+    try await streamEndpoint.run()
+    #endif
   }
 }
 
+#if NonEmbeddedBuild
 func serializeDeserialize(
   _ object: SwiftOCADevice
     .OcaBlock<SwiftOCADevice.OcaRoot>
@@ -203,3 +213,4 @@ func serializeDeserialize(
     debugPrint("serialization error: \(error)")
   }
 }
+#endif

Package.swift

@@ -15,62 +15,64 @@ if EnableASAN {
   ASANLinkerSettings.append(LinkerSetting.linkedLibrary("asan"))
 }
 
-let PlatformPackageDependencies: [Package.Dependency]
-let PlatformTargetDependencies: [Target.Dependency]
+var PlatformPackageDependencies: [Package.Dependency] = []
+var PlatformTargetDependencies: [Target.Dependency] = []
 let PlatformProducts: [Product]
 let PlatformTargets: [Target]
 let SwiftLanguageVersionSetting: [SwiftSetting]
 
+PlatformPackageDependencies += [
+  .package(url: "https://github.com/PADL/FlyingFox", branch: "main"),
+]
+
+PlatformTargetDependencies += [
+  .product(
+    name: "FlyingSocks",
+    package: "FlyingFox"
+  ),
+  .product(
+    name: "FlyingFox",
+    package: "FlyingFox",
+    condition: .when(traits: ["NonEmbeddedBuild"])
+  ),
+]
+
 #if os(Linux)
-PlatformPackageDependencies = [.package(url: "https://github.com/PADL/IORingSwift", from: "0.9.2")]
+PlatformPackageDependencies += [.package(url: "https://github.com/PADL/IORingSwift", from: "0.9.2")]
 
-PlatformTargetDependencies = [
+PlatformTargetDependencies += [
   .target(
     name: "dnssd",
     condition: .when(platforms: [.linux])
   ),
   .product(
     name: "IORing",
     package: "IORingSwift",
-    condition: .when(platforms: [.linux])
+    condition: .when(platforms: [.linux], traits: ["NonEmbeddedBuild"])
   ),
   .product(
     name: "IORingUtils",
     package: "IORingSwift",
-    condition: .when(platforms: [.linux])
+    condition: .when(platforms: [.linux], traits: ["NonEmbeddedBuild"])
   ),
   .product(
     name: "IORingFoundation",
     package: "IORingSwift",
-    condition: .when(platforms: [.linux])
+    condition: .when(platforms: [.linux], traits: ["NonEmbeddedBuild"])
   ),
 ]
 
 PlatformProducts = []
 PlatformTargets = []
 SwiftLanguageVersionSetting = []
 #elseif os(macOS) || os(iOS)
-PlatformPackageDependencies = [
-  .package(url: "https://github.com/swhitty/FlyingFox", from: "0.20.0"),
+PlatformPackageDependencies += [
   .package(
     url: "https://github.com/spacenation/swiftui-sliders",
     from: "2.1.0"
   ),
 ]
 
-PlatformTargetDependencies = [
-  .product(
-    name: "FlyingFox",
-    package: "FlyingFox",
-    condition: .when(platforms: [.macOS, .iOS, .android])
-  ),
-  .product(
-    name: "FlyingSocks",
-    package: "FlyingFox",
-    condition: .when(platforms: [.macOS, .iOS, .android])
-  ),
-]
-
 PlatformProducts = [
   .library(
     name: "SwiftOCAUI",
@@ -147,7 +149,11 @@ let CommonTargets: [Target] = [
     name: "SwiftOCA",
     dependencies: [
       "AsyncExtensions",
-      "AnyCodable",
+      .product(
+        name: "AnyCodable",
+        package: "AnyCodable",
+        condition: .when(traits: ["NonEmbeddedBuild"])
+      ),
       "SocketAddress",
       .product(name: "AsyncAlgorithms", package: "swift-async-algorithms"),
       .product(name: "SystemPackage", package: "swift-system"),
@@ -233,6 +239,10 @@ let package = Package(
     .iOS(.v17),
   ],
   products: CommonProducts + PlatformProducts,
+  traits: [
+    .default(enabledTraits: ["NonEmbeddedBuild"]),
+    .init(name: "NonEmbeddedBuild", description: "Default build footprint"),
+  ],
   dependencies: CommonPackageDependencies + PlatformPackageDependencies,
   targets: CommonTargets + PlatformTargets
 )

Sources/SwiftOCA/OCC/ControlClasses/Root+JSON.swift

@@ -14,6 +14,7 @@
 // limitations under the License.
 //
 
+#if NonEmbeddedBuild
 import AnyCodable
 #if canImport(FoundationEssentials)
 import FoundationEssentials
@@ -37,3 +38,4 @@ enum OcaJSONPropertyKeys: String {
   case type
   case members
 }
+#endif

Sources/SwiftOCA/OCC/ControlClasses/Root.swift

@@ -134,6 +134,7 @@ open class OcaRoot: CustomStringConvertible, @unchecked Sendable, _OcaObjectKeyP
     }
   }
 
+  #if NonEmbeddedBuild
   open func getJsonValue(
     flags: OcaPropertyResolutionFlags = .defaultFlags
   ) async -> [String: any Sendable] {
@@ -178,6 +179,7 @@ open class OcaRoot: CustomStringConvertible, @unchecked Sendable, _OcaObjectKeyP
       await getJsonValue(flags: .defaultFlags)
     }
   }
+  #endif
 
   public func propertyKeyPath(for propertyID: OcaPropertyID) async -> AnyKeyPath? {
     await OcaPropertyKeyPathCache.shared.lookupProperty(byID: propertyID, for: self)
@@ -335,13 +337,15 @@ public extension OcaRoot {
       value
     }
 
+    #if NonEmbeddedBuild
     func getJsonValue(
       _ object: OcaRoot,
       keyPath: AnyKeyPath,
       flags: OcaPropertyResolutionFlags = .defaultFlags
     ) async throws -> [String: any Sendable] {
       try [keyPath.jsonKey: String(describing: value)]
     }
+    #endif
 
     @_spi(SwiftOCAPrivate)
     public func _setValue(_ object: OcaRoot, _ anyValue: Any) async throws {

Sources/SwiftOCA/OCC/ControlClasses/Workers/BlocksAndMatrices/Block.swift

@@ -507,6 +507,7 @@ Sendable {
     true
   }
 
+  #if NonEmbeddedBuild
   override open func getJsonValue(
     flags: OcaPropertyResolutionFlags = .defaultFlags
   ) async -> [String: any Sendable] {
@@ -516,6 +517,7 @@ Sendable {
       .asyncMap { await $0.getJsonValue(flags: flags) }
     return jsonObject
   }
+  #endif
 }
 
 public extension OcaBlock {

Sources/SwiftOCA/OCC/ControlClasses/Workers/BlocksAndMatrices/Matrix.swift

@@ -104,6 +104,7 @@ Sendable {
     true
   }
 
+  #if NonEmbeddedBuild
   override open func getJsonValue(
     flags: OcaPropertyResolutionFlags = .defaultFlags
   ) async -> [String: any Sendable] {
@@ -113,6 +114,7 @@ Sendable {
       .reencodeAsValidJSONObject(membersJson)
     return jsonObject
   }
+  #endif
 }
 
 public extension OcaMatrix {

Sources/SwiftOCA/OCC/PropertyTypes/BoundedProperty.swift

@@ -191,6 +191,7 @@ public struct OcaBoundedProperty<
     try await _storage._getValue(object, flags: flags)
   }
 
+  #if NonEmbeddedBuild
   public func getJsonValue(
     _ object: OcaRoot,
     keyPath: AnyKeyPath,
@@ -204,6 +205,7 @@ public struct OcaBoundedProperty<
       "\(jsonKey)": value.value,
     ]
   }
+  #endif
 
   @_spi(SwiftOCAPrivate)
   public func _setValue(_ object: OcaRoot, _ anyValue: Any) async throws {

Sources/SwiftOCA/OCC/PropertyTypes/Property.swift

@@ -1,5 +1,5 @@
 //
-// Copyright (c) 2023 PADL Software Pty Ltd
+// Copyright (c) 2023-2026 PADL Software Pty Ltd
 //
 // Licensed under the Apache License, Version 2.0 (the License);
 // you may not use this file except in compliance with the License.
@@ -16,7 +16,11 @@
 
 import AsyncAlgorithms
 import AsyncExtensions
+#if NonEmbeddedBuild || !canImport(FoundationEssentials)
 import Foundation
+#else
+import FoundationEssentials
+#endif
 
 public struct OcaPropertyResolutionFlags: OptionSet, Sendable {
   public typealias RawValue = UInt32
@@ -56,12 +60,14 @@ public protocol OcaPropertyRepresentable: CustomStringConvertible {
   func refresh(_ object: OcaRoot) async
   func subscribe(_ object: OcaRoot) async
 
+  #if NonEmbeddedBuild
   func getJsonValue(
     _ object: OcaRoot,
     keyPath: AnyKeyPath,
     flags: OcaPropertyResolutionFlags
   ) async throws
     -> [String: any Sendable]
+  #endif
 }
 
 public extension OcaPropertyRepresentable {
@@ -432,14 +438,20 @@ public struct OcaProperty<Value: Codable & Sendable>: Codable, Sendable,
     }
   }
 
+  #if NonEmbeddedBuild
   public func getJsonValue(
     _ object: OcaRoot,
     keyPath: AnyKeyPath,
     flags: OcaPropertyResolutionFlags = .defaultFlags
   ) async throws -> [String: any Sendable] {
     let value = try await _getValue(object, flags: flags)
     let jsonValue: any Sendable = if isNil(value) {
+      #if canImport(Foundation) && !canImport(FoundationEssentials)
       NSNull()
+      #else
+      (any Sendable)?.none
+      #endif
+
     } else if JSONSerialization.isValidJSONObject(value) {
       value
     } else {
@@ -448,6 +460,7 @@ public struct OcaProperty<Value: Codable & Sendable>: Codable, Sendable,
 
     return try [keyPath.jsonKey: jsonValue]
   }
+  #endif
 
   @_spi(SwiftOCAPrivate)
   public func _setValue(_ object: OcaRoot, _ anyValue: Any) async throws {
@@ -486,6 +499,7 @@ extension OcaProperty.PropertyValue: Hashable where Value: Hashable & Codable {
   }
 }
 
+#if NonEmbeddedBuild
 extension AnyKeyPath {
   var jsonKey: String {
     get throws {
@@ -510,3 +524,4 @@ extension AnyKeyPath {
     }
   }
 }
+#endif

Sources/SwiftOCA/OCC/PropertyTypes/VectorProperty.swift

@@ -165,6 +165,7 @@ public struct OcaVectorProperty<
     try await _storage._getValue(object, flags: flags)
   }
 
+  #if NonEmbeddedBuild
   public func getJsonValue(
     _ object: OcaRoot,
     keyPath: AnyKeyPath,
@@ -173,6 +174,7 @@ public struct OcaVectorProperty<
     let value = try await _getValue(object, flags: flags)
     return try [keyPath.jsonKey: [value.x, value.y]]
   }
+  #endif
 
   @_spi(SwiftOCAPrivate)
   public func _setValue(_ object: OcaRoot, _ anyValue: Any) async throws {

Sources/SwiftOCA/OCP.1/Backend/Ocp1CFSocketConnection.swift

@@ -14,7 +14,7 @@
 // limitations under the License.
 //
 
-#if canImport(CoreFoundation)
+#if canImport(CoreFoundation) && NonEmbeddedBuild
 
 import AsyncAlgorithms
 import AsyncExtensions