Add '#if canImport(SwiftUI)'

Author: rockname

Examples/Sources/MacroExamples/Interface/AccessorMacros.swift

@@ -10,6 +10,8 @@
 //
 //===----------------------------------------------------------------------===//
 
+#if canImport(SwiftUI)
+
 import SwiftUI
 
 // MARK: - EnvironmentValue Accessor
@@ -18,3 +20,5 @@ import SwiftUI
 @attached(accessor)
 public macro EnvironmentValue(for key: any EnvironmentKey.Type) =
   #externalMacro(module: "MacroExamplesImplementation", type: "EnvironmentValueMacro")
+
+#endif

Examples/Sources/MacroExamples/Playground/AccessorMacrosPlayground.swift

@@ -13,6 +13,9 @@
 // MARK: - EnvironmentValue Accessor
 
 import MacroExamplesInterface
+
+#if canImport(SwiftUI)
+
 import SwiftUI
 
 private struct MyEnvironmentKey: EnvironmentKey {
@@ -30,3 +33,5 @@ func runEnvironmentValueAccessorMacroPlayground() {
   environmentValues.myCustomValue = "New value"
   print("New myCustomValue: \(environmentValues.myCustomValue)")
 }
+
+#endif

Examples/Sources/MacroExamples/Playground/main.swift

@@ -50,4 +50,8 @@ runPeerMacrosPlayground()
 
 // MARK: - Accessor Macros
 
+#if canImport(SwiftUI)
+
 runEnvironmentValueAccessorMacroPlayground()
+
+#endif