From 92b4e7df144a33aef32e62bad9498d199ce827da Mon Sep 17 00:00:00 2001
From: Nick Lockwood <nick@charcoaldesign.co.uk>
Date: Wed, 1 Mar 2023 19:02:25 +0000
Subject: [PATCH] Fix `redundantNilInit` removing required `nil` inside
 ViewBuilder

---
 Sources/Rules.swift               |  2 +-
 Tests/RulesTests+Redundancy.swift | 45 +++++++++++++++++++++++++++++++
 2 files changed, 46 insertions(+), 1 deletion(-)

diff --git a/Sources/Rules.swift b/Sources/Rules.swift
index d752cd5e..af42db8f 100644
--- a/Sources/Rules.swift
+++ b/Sources/Rules.swift
@@ -2852,7 +2852,7 @@ public struct _FormatRules {
         formatter.forEach(.keyword("var")) { i, _ in
             if formatter.modifiersForDeclaration(at: i, contains: {
                 $1 == "lazy" || ($1 != "@objc" && $1.hasPrefix("@"))
-            }) {
+            }) || formatter.isInResultBuilder(at: i) {
                 return // Can't remove the init
             }
             // Check this isn't a Codable
diff --git a/Tests/RulesTests+Redundancy.swift b/Tests/RulesTests+Redundancy.swift
index 292d5341..235332d5 100644
--- a/Tests/RulesTests+Redundancy.swift
+++ b/Tests/RulesTests+Redundancy.swift
@@ -1772,6 +1772,51 @@ class RedundancyTests: RulesTests {
         testFormatting(for: input, output, rule: FormatRules.redundantNilInit)
     }
 
+    func testNoRemoveNilInitInViewBuilder() {
+        let input = """
+        struct TestView: View {
+            var body: some View {
+                var foo: String? = nil
+                Text(foo ?? "")
+            }
+        }
+        """
+        testFormatting(for: input, rule: FormatRules.redundantNilInit)
+    }
+
+    func testNoRemoveNilInitInIfStatementInViewBuilder() {
+        let input = """
+        struct TestView: View {
+            var body: some View {
+                if true {
+                    var foo: String?
+                    Text(foo ?? "")
+                } else {
+                    EmptyView()
+                }
+            }
+        }
+        """
+        testFormatting(for: input, rule: FormatRules.redundantNilInit)
+    }
+
+    func testNoRemoveNilInitInSwitchStatementInViewBuilder() {
+        let input = """
+        struct TestView: View {
+            var body: some View {
+                switch foo {
+                case .bar:
+                    var foo: String?
+                    Text(foo ?? "")
+                default:
+                    EmptyView()
+                }
+            }
+        }
+        """
+        testFormatting(for: input, rule: FormatRules.redundantNilInit)
+    }
+
     // MARK: - redundantLet
 
     func testRemoveRedundantLet() {