Fix building for Mac in Xcode

Sources/OpenSwiftUI/Layout/Alignment.swift

@@ -1,4 +1,8 @@
+#if canImport(Foundation)
 import Foundation
+#else
+import CoreGraphicsShim
+#endif
 
 public struct Alignment {
     public var horizontal: HorizontalAlignment

Sources/OpenSwiftUI/Layout/EdgeInsets.swift

@@ -1,4 +1,8 @@
+#if canImport(Foundation)
 import Foundation
+#else
+import CoreGraphicsShim
+#endif
 
 public struct EdgeInsets: Equatable {
     public var top: CGFloat

Sources/OpenSwiftUI/Layout/ViewDimensions.swift

@@ -1,4 +1,8 @@
+#if canImport(Foundation)
 import Foundation
+#else
+import CoreGraphicsShim
+#endif
 
 public struct ViewDimensions {
     public var width: CGFloat {

Sources/OpenSwiftUI/LocalizedStringKey.swift

@@ -1,3 +1,4 @@
+#if canImport(Foundation)
 public struct LocalizedStringKey {
     internal var key: String
     private var hasFormatting: Bool = false
@@ -10,3 +11,4 @@ public struct LocalizedStringKey {
         self.key = value
     }
 }
+#endif

Sources/OpenSwiftUI/Modifiers/PaddingModifier.swift

@@ -1,4 +1,8 @@
+#if canImport(Foundation)
 import Foundation
+#else
+import CoreGraphicsShim
+#endif
 
 public struct PaddingModifier: ViewModifier {
     static let defaultPadding: CGFloat = 8

Sources/OpenSwiftUI/Views/Color.swift

@@ -1,4 +1,8 @@
+#if canImport(Foundation)
 import Foundation
+#else
+import CoreGraphicsShim
+#endif
 
 public class AnyColorBox {
 }
@@ -60,7 +64,11 @@ public class DisplayP3: AnyColorBox {
 
 extension Double {
     fileprivate var hexString: String {
+        #if canImport(Foundation)
         return String(format: "%02X", Int((self * 255).rounded()))
+        #else
+        fatalError("Not Implemented.")
+        #endif
     }
 }
 

Sources/OpenSwiftUI/Views/Font.swift

@@ -1,4 +1,8 @@
+#if canImport(Foundation)
 import Foundation
+#else
+import CoreGraphicsShim
+#endif
 
 extension View {
     public func font(_ font: Font?) -> some View {

Sources/OpenSwiftUI/Views/HStack.swift

@@ -1,4 +1,8 @@
+#if canImport(Foundation)
 import Foundation
+#else
+import CoreGraphicsShim
+#endif
 
 public struct HStack<Content>: View where Content: View {
     public typealias Body = Never

Sources/OpenSwiftUI/Views/HStackLayout.swift

@@ -1,4 +1,8 @@
+#if canImport(Foundation)
 import Foundation
+#else
+import CoreGraphicsShim
+#endif
 
 public struct _HStackLayout {
     public var alignment: VerticalAlignment

Sources/OpenSwiftUI/Views/Image.swift

@@ -1,4 +1,8 @@
+#if canImport(Foundation)
 import Foundation
+#else
+import CoreGraphicsShim
+#endif
 
 public struct Image: Equatable {
     public var _provider: AnyImageProviderBox
@@ -26,6 +30,7 @@ extension Image: View {
     }
 }
 
+#if canImport(Foundation)
 extension Image {
     public init(_ name: String, bundle: Foundation.Bundle? = nil) {
         fatalError()
@@ -40,3 +45,4 @@ extension Image {
         fatalError()
     }
 }
+#endif

Sources/OpenSwiftUI/Views/Picker.swift

@@ -1,4 +1,8 @@
+#if canImport(Foundation)
 import Foundation
+#else
+import CoreGraphicsShim
+#endif
 
 public protocol PickerStyle {
     static func _makeView<SelectionValue>(value: _GraphValue<_PickerValue<Self, SelectionValue>>, inputs: _ViewInputs) -> _ViewOutputs where SelectionValue: Hashable
@@ -69,11 +73,13 @@ public struct Picker<Label, SelectionValue, Content>: View where Label: View, Se
 }
 
 extension Picker where Label == Text {
+    #if canImport(Foundation)
     public init(_ titleKey: LocalizedStringKey, selection: Binding<SelectionValue>, @ViewBuilder content: () -> Content) {
         self.selection = selection
         self.label = Text(titleKey)
         self.content = content()
     }
+    #endif
 
     public init<S>(_ title: S, selection: Binding<SelectionValue>, @ViewBuilder content: () -> Content) where S: StringProtocol {
         self.selection = selection

Sources/OpenSwiftUI/Views/Shape.swift

@@ -1,4 +1,8 @@
+#if canImport(Foundation)
 import Foundation
+#else
+import CoreGraphicsShim
+#endif
 
 public protocol Shape: Animatable, View {
     func path(in rect: CGRect) -> Path

Sources/OpenSwiftUI/Views/ShapeView.swift

@@ -1,4 +1,8 @@
+#if canImport(Foundation)
 import Foundation
+#else
+import CoreGraphicsShim
+#endif
 
 public struct _ShapeView<Content, Style>: View where Content: Shape, Style: ShapeStyle {
     public var body: Never {

Sources/OpenSwiftUI/Views/Shapes/Angle.swift

@@ -1,4 +1,8 @@
+#if canImport(Foundation)
 import Foundation
+#else
+import CoreGraphicsShim
+#endif
 
 public struct Angle {
     public var radians: Double

Sources/OpenSwiftUI/Views/Shapes/Circle.swift

@@ -1,4 +1,8 @@
+#if canImport(Foundation)
 import Foundation
+#else
+import CoreGraphicsShim
+#endif
 
 public struct Circle: Shape {
     public func path(in rect: CGRect) -> Path {

Sources/OpenSwiftUI/Views/Shapes/Path.swift

@@ -1,8 +1,7 @@
+#if canImport(Foundation)
 import Foundation
-#if os(Linux)
-import CoreGraphicsShim
 #else
-import CoreGraphics
+import CoreGraphicsShim
 #endif
 
 internal struct FixedRoundedRect: Equatable {

Sources/OpenSwiftUI/Views/Shapes/Rectangle.swift

@@ -1,4 +1,8 @@
+#if canImport(Foundation)
 import Foundation
+#else
+import CoreGraphicsShim
+#endif
 
 public struct Rectangle: Shape {
     public func path(in rect: CGRect) -> Path {

Sources/OpenSwiftUI/Views/Stepper.swift

@@ -30,12 +30,14 @@ extension Stepper {
 }
 
 extension Stepper where Label == Text {
+    #if canImport(Foundation)
     public init(_ titleKey: LocalizedStringKey, onIncrement: (() -> Void)?, onDecrement: (() -> Void)?, onEditingChanged: @escaping (Bool) -> Void = { _ in }) {
         self.label = Text(titleKey)
         self.onIncrement = onIncrement
         self.onDecrement = onDecrement
         self.onEditingChanged = onEditingChanged
     }
+    #endif
 
     @_disfavoredOverload public init<S>(_ title: S, onIncrement: (() -> Void)?, onDecrement: (() -> Void)?, onEditingChanged: @escaping (Bool) -> Void = { _ in }) where S: StringProtocol {
         self.label = Text(title)
@@ -44,20 +46,24 @@ extension Stepper where Label == Text {
         self.onEditingChanged = onEditingChanged
     }
 
+    #if canImport(Foundation)
     public init<V>(_ titleKey: LocalizedStringKey, value: Binding<V>, step: V.Stride = 1, onEditingChanged: @escaping (Bool) -> Void = { _ in }) where V: Strideable {
         self.label = Text(titleKey)
         self.onEditingChanged = onEditingChanged
     }
+    #endif
 
     @_disfavoredOverload public init<S, V>(_ title: S, value: Binding<V>, step: V.Stride = 1, onEditingChanged: @escaping (Bool) -> Void = { _ in }) where S: StringProtocol, V: Strideable {
         self.label = Text(title)
         self.onEditingChanged = onEditingChanged
     }
 
+    #if canImport(Foundation)
     public init<V>(_ titleKey: LocalizedStringKey, value: Binding<V>, in bounds: ClosedRange<V>, step: V.Stride = 1, onEditingChanged: @escaping (Bool) -> Void = { _ in }) where V: Strideable {
         self.label = Text(titleKey)
         self.onEditingChanged = onEditingChanged
     }
+    #endif
 
     @_disfavoredOverload public init<S, V>(_ title: S, value: Binding<V>, in bounds: ClosedRange<V>, step: V.Stride = 1, onEditingChanged: @escaping (Bool) -> Void = { _ in }) where S: StringProtocol, V: Strideable {
         self.label = Text(title)

Sources/OpenSwiftUI/Views/Text.swift

@@ -1,4 +1,8 @@
+#if canImport(Foundation)
 import Foundation
+#else
+import CoreGraphicsShim
+#endif
 
 public class AnyTextStorage<Storage: StringProtocol> {
     public var storage: Storage
@@ -64,9 +68,11 @@ public struct Text: View, Equatable {
         self._storage = .anyTextStorage(AnyTextStorage<String>(storage: String(content)))
     }
 
+    #if canImport(Foundation)
     public init(_ key: LocalizedStringKey, tableName: String? = nil, bundle: Bundle? = nil, comment: StaticString? = nil) {
         self._storage = .anyTextStorage(AnyTextStorage<String>(storage: key.key))
     }
+    #endif
 
     private init(verbatim content: String, modifiers: [Modifier] = []) {
         self._storage = .verbatim(content)

Sources/OpenSwiftUI/Views/Toggle.swift

@@ -20,9 +20,11 @@ extension Toggle where Label == ToggleStyleConfiguration.Label {
 }
 
 extension Toggle where Label == Text {
+    #if canImport(Foundation)
     public init(_ titleKey: LocalizedStringKey, isOn: Binding<Bool>) {
         fatalError()
     }
+    #endif
 
     public init<S>(_ title: S, isOn: Binding<Bool>) where S: StringProtocol {
         fatalError()

Sources/OpenSwiftUI/Views/VStack.swift

@@ -1,4 +1,8 @@
+#if canImport(Foundation)
 import Foundation
+#else
+import CoreGraphicsShim
+#endif
 
 public struct VStack<Content>: View where Content: View {
     public typealias Body = Never

Sources/OpenSwiftUI/Views/VStackLayout.swift

@@ -1,4 +1,8 @@
+#if canImport(Foundation)
 import Foundation
+#else
+import CoreGraphicsShim
+#endif
 
 public struct _VStackLayout {
     public var alignment: HorizontalAlignment

Tests/OpenSwiftUITests/OpenSwiftUITests.swift

@@ -3,12 +3,12 @@ import XCTest
 
 final class OpenSwiftUITests: XCTestCase {
     func testExample() {
-        let body = VStack {
+        let _ = VStack {
             Text("Hello")
             Text("World")
         }
 
-        let body = HStack {
+        let _ = HStack {
             if true {
                 Text("Hello")
             }