From 4be2231320de22e7233243c10dbbbb5a0e483283 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Nikolaj=20Pogne=CC=8Crebko?=
 <nikolaj.pognerebko@livesport.eu>
Date: Thu, 20 Mar 2025 12:01:07 +0100
Subject: [PATCH] Added support of ViewAction for preprocessor macros

---
 .../ViewActionMacro.swift                     | 22 +++++++++---
 .../ViewActionMacroTests.swift                | 34 +++++++++++++++++++
 2 files changed, 52 insertions(+), 4 deletions(-)

diff --git a/Sources/ComposableArchitectureMacros/ViewActionMacro.swift b/Sources/ComposableArchitectureMacros/ViewActionMacro.swift
index 69e444978739..42595296a71e 100644
--- a/Sources/ComposableArchitectureMacros/ViewActionMacro.swift
+++ b/Sources/ComposableArchitectureMacros/ViewActionMacro.swift
@@ -121,10 +121,24 @@ extension SyntaxProtocol {
   }
 }
 
-extension DeclGroupSyntax {
-  fileprivate var hasStoreVariable: Bool {
-    self.memberBlock.members.contains(where: { member in
-      if let variableDecl = member.decl.as(VariableDeclSyntax.self),
+private extension DeclGroupSyntax {
+  var hasStoreVariable: Bool {
+    let members = memberBlock.members
+    return members.contains(where: { member in
+
+      let variableDecl: VariableDeclSyntax? =
+        if
+          let ifConfigDecl = member.decl.as(IfConfigDeclSyntax.self),
+          let firstClause = ifConfigDecl.clauses.first,
+          let member = firstClause.elements?.as(MemberBlockItemListSyntax.self)?.first
+        {
+          member.decl.as(VariableDeclSyntax.self)
+        } else {
+          member.decl.as(VariableDeclSyntax.self)
+        }
+
+      if
+        let variableDecl,
         let firstBinding = variableDecl.bindings.first,
         let identifierPattern = firstBinding.pattern.as(IdentifierPatternSyntax.self),
         identifierPattern.identifier.text == "store"
diff --git a/Tests/ComposableArchitectureMacrosTests/ViewActionMacroTests.swift b/Tests/ComposableArchitectureMacrosTests/ViewActionMacroTests.swift
index b4f404626038..f49686beba51 100644
--- a/Tests/ComposableArchitectureMacrosTests/ViewActionMacroTests.swift
+++ b/Tests/ComposableArchitectureMacrosTests/ViewActionMacroTests.swift
@@ -120,6 +120,40 @@
         """
       }
     }
+    
+    func testBindableStore_WithPreprocessorMacro() {
+      assertMacro {
+        """
+        @ViewAction(for: Feature.self)
+        struct FeatureView: View {
+          #if canImport(AppKit)
+          @Perception.Bindable var store: StoreOf<Feature>
+          #else
+          @Bindable var store: StoreOf<Feature>
+          #endif
+          var body: some View {
+            EmptyView()
+          }
+        }
+        """
+      } expansion: {
+        """
+        struct FeatureView: View {
+          #if canImport(AppKit)
+          @Perception.Bindable var store: StoreOf<Feature>
+          #else
+          @Bindable var store: StoreOf<Feature>
+          #endif
+          var body: some View {
+            EmptyView()
+          }
+        }
+
+        extension FeatureView: ComposableArchitecture.ViewActionSending {
+        }
+        """
+      }
+    }
 
     func testNoStore() {
       assertMacro {