From 42262babfabed037f5fcc840ecf37dc905ac3364 Mon Sep 17 00:00:00 2001
From: dankito <git@dankito.net>
Date: Tue, 14 Jul 2020 17:07:53 +0200
Subject: [PATCH] Added Freezer to be able to freeze objects from common code
 (non-Native implementations just do nothing)

---
 .../dankito/utils/multiplatform/Freezer.kt    | 14 +++++++++++++
 .../dankito/utils/multiplatform/Freezer.kt    | 21 +++++++++++++++++++
 .../dankito/utils/multiplatform/Freezer.kt    | 18 ++++++++++++++++
 3 files changed, 53 insertions(+)
 create mode 100644 common/src/commonMain/kotlin/net/dankito/utils/multiplatform/Freezer.kt
 create mode 100644 common/src/iosMain/kotlin/net/dankito/utils/multiplatform/Freezer.kt
 create mode 100644 common/src/jvmMain/kotlin/net/dankito/utils/multiplatform/Freezer.kt

diff --git a/common/src/commonMain/kotlin/net/dankito/utils/multiplatform/Freezer.kt b/common/src/commonMain/kotlin/net/dankito/utils/multiplatform/Freezer.kt
new file mode 100644
index 00000000..7d9a7afd
--- /dev/null
+++ b/common/src/commonMain/kotlin/net/dankito/utils/multiplatform/Freezer.kt
@@ -0,0 +1,14 @@
+package net.dankito.utils.multiplatform
+
+
+expect class Freezer() {
+
+    companion object {
+
+        fun <T> freeze(obj: T): T
+
+        fun isFrozen(obj: Any): Boolean
+
+    }
+
+}
\ No newline at end of file
diff --git a/common/src/iosMain/kotlin/net/dankito/utils/multiplatform/Freezer.kt b/common/src/iosMain/kotlin/net/dankito/utils/multiplatform/Freezer.kt
new file mode 100644
index 00000000..c7edba73
--- /dev/null
+++ b/common/src/iosMain/kotlin/net/dankito/utils/multiplatform/Freezer.kt
@@ -0,0 +1,21 @@
+package net.dankito.utils.multiplatform
+
+import kotlin.native.concurrent.freeze
+import kotlin.native.concurrent.isFrozen
+
+
+actual class Freezer {
+
+    actual companion object {
+
+        actual fun <T> freeze(obj: T): T {
+            return obj.freeze()
+        }
+
+        actual fun isFrozen(obj: Any): Boolean {
+            return obj.isFrozen
+        }
+
+    }
+
+}
\ No newline at end of file
diff --git a/common/src/jvmMain/kotlin/net/dankito/utils/multiplatform/Freezer.kt b/common/src/jvmMain/kotlin/net/dankito/utils/multiplatform/Freezer.kt
new file mode 100644
index 00000000..72c52a04
--- /dev/null
+++ b/common/src/jvmMain/kotlin/net/dankito/utils/multiplatform/Freezer.kt
@@ -0,0 +1,18 @@
+package net.dankito.utils.multiplatform
+
+
+actual class Freezer {
+
+    actual companion object {
+
+        actual fun <T> freeze(obj: T): T {
+            return obj // no op
+        }
+
+        actual fun isFrozen(obj: Any): Boolean {
+            return false // freezing is only possible on Kotlin/Native
+        }
+
+    }
+
+}
\ No newline at end of file