[Feature] Add _logChange implementation

OpenSwiftUIProject · Apr 27, 2024 · 5e95b2d · 5e95b2d
1 parent 0fa2879
commit 5e95b2d
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Showing 3 changed files with 81 additions and 9 deletions.
diff --git a/Docs/Version.md b/Docs/Version.md
@@ -2,4 +2,4 @@
 
 RELEASE_2021 - iOS 15.5 - macOS 12.7.1
 
-RELEASE_2023 - iOS 17.0 - macOS 14.0
+RELEASE_2023 - iOS 17.4 - macOS 14.4.1
diff --git a/Sources/OpenSwiftUI/Core/Log/Log.swift b/Sources/OpenSwiftUI/Core/Log/Log.swift
@@ -7,6 +7,13 @@
 
 #if OPENSWIFTUI_SWIFT_LOG
 import Logging
+extension Logger {
+    init(subsystem: String, category: String) {
+        var logger = Logger(label: subsystem)
+        logger[metadataKey: "category"] = MetadataValue.string(category)
+        self = logger
+    }
+}
 #else
 import os
 #if DEBUG

diff --git a/Sources/OpenSwiftUI/View/Debug/ChangedBodyProperty.swift b/Sources/OpenSwiftUI/View/Debug/ChangedBodyProperty.swift
@@ -9,6 +9,8 @@
 internal import OpenGraphShims
 import Foundation
 
+// MARK: - printChanges
+
 extension View {
     public static func _printChanges() {
         printChangedBodyProperties(of: Self.self)
@@ -32,12 +34,75 @@ func printChangedBodyProperties<Body>(of type: Body.Type) {
     print(result)
 }
 
+// MARK: - logChanges
+
+// Audited for RELEASE_2023
+
+#if OPENSWIFTUI_SWIFT_LOG
+import Logging
+
+extension Logger {
+    static let changeBodyPropertiesLogger = Logger(subsystem: "org.OpenSwiftUIProject.OpenSwiftUI", category: "Changed Body Properties")
+}
+#else
+import os.log
+
+@available(iOS 14.0, macOS 11, *)
+extension Logger {
+    static let changeBodyPropertiesLogger = Logger(subsystem: "org.OpenSwiftUIProject.OpenSwiftUI", category: "Changed Body Properties")
+}
+
+extension OSLog {
+    static let changeBodyPropertiesLogger = OSLog(subsystem: "org.OpenSwiftUIProject.OpenSwiftUI", category: "Changed Body Properties")
+}
+#endif
+
+extension View {
+    public static func _logChanges() {
+        logChangedBodyProperties(of: Self.self)
+    }
+}
+
+extension ViewModifier {
+    public static func _logChanges() {
+        logChangedBodyProperties(of: Self.self)
+    }
+}
+
+func logChangedBodyProperties<Body>(of type: Body.Type) {
+    let properties = changedBodyProperties(of: type)
+    let result = OGTypeID(type).description
+    if properties.isEmpty {
+        #if OPENSWIFTUI_SWIFT_LOG
+        Logger.changeBodyPropertiesLogger.info("\(result): unchanged.")
+        #else
+        if #available(iOS 14.0, macOS 11, *) {
+            Logger.changeBodyPropertiesLogger.info("\(result, privacy: .public): unchanged.")
+        } else {
+            os_log("%{public}s: unchanged.", log: .changeBodyPropertiesLogger, type: .info, result)
+        }
+        #endif
+    } else {
+        #if OPENSWIFTUI_SWIFT_LOG
+        Logger.changeBodyPropertiesLogger.info("\(result): \(properties.joined(separator: ", ")) changed.")
+        #else
+        if #available(iOS 14.0, macOS 11, *) {
+            Logger.changeBodyPropertiesLogger.info("\(result, privacy: .public): \(properties.joined(separator: ", "), privacy: .public) changed.")
+        } else {
+            os_log("%{public}s: %{public}s changed.", log: .changeBodyPropertiesLogger, type: .info, result, properties.joined(separator: ", "))
+        }
+        #endif
+    }
+}
+
+// MARK: - changedBodyProperties
+
 func changedBodyProperties<Body>(of type: Body.Type) -> [String] {
     var index = 0
     repeat {
         let options = [
             OGGraph.descriptionFormat.takeUnretainedValue(): "stack/frame",
-            "frame_index": index
+            "frame_index": index,
         ] as NSDictionary
         guard let description = OGGraph.description(nil, options: options),
               let dict = description.takeUnretainedValue() as? [String: Any],
@@ -69,23 +134,23 @@ func changedBodyProperties<Body>(of type: Body.Type) -> [String] {
             let fields = DynamicPropertyCache.fields(of: Body.self)
             buffer.applyChanged { offset in
                 switch fields.layout {
-                case .product(let fields):
+                case let .product(fields):
                     guard let field = fields.first(where: { $0.offset == offset }),
-                        let name = field.name,
-                        let property = String(cString: name, encoding: .utf8) else {
+                          let name = field.name,
+                          let property = String(cString: name, encoding: .utf8)
+                    else {
                         properties.append("@\(offset)")
                         return
                     }
                     properties.append(property)
-                    break
-                case .sum(_, _):
+                case .sum:
                     properties.append("@\(offset)")
-                    break
                 }
             }
         }
         return properties
-    } while (index != 32)
+    } while index != 32
     return []
 }
+
 #endif