From 2b9a9013c60a42f053d51fe33222d1801bb118c6 Mon Sep 17 00:00:00 2001
From: Chris Boyle <chris@boyle.name>
Date: Sun, 15 Oct 2023 14:59:03 +0100
Subject: [PATCH] Stop Proguard throwing away all the backends

Specifically all the subclasses and BackendName.byDisplayName(String)

Slightly surprised that all the comparisons against those subclass
objects didn't cause it to rethink that plan.
---
 .../kotlin/name/boyle/chris/sgtpuzzles/backend/BackendName.kt  | 1 +
 buildSrc/src/main/kotlin/GenerateBackendsTask.kt               | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/app/src/main/kotlin/name/boyle/chris/sgtpuzzles/backend/BackendName.kt b/app/src/main/kotlin/name/boyle/chris/sgtpuzzles/backend/BackendName.kt
index 1f0d0e5d0..37c50f35b 100644
--- a/app/src/main/kotlin/name/boyle/chris/sgtpuzzles/backend/BackendName.kt
+++ b/app/src/main/kotlin/name/boyle/chris/sgtpuzzles/backend/BackendName.kt
@@ -121,6 +121,7 @@ sealed class BackendName(
             all.associateBy { it.displayName }
         }
 
+        @UsedByJNI
         @JvmStatic
         fun byDisplayName(name: String?) = BY_DISPLAY_NAME[name]
 
diff --git a/buildSrc/src/main/kotlin/GenerateBackendsTask.kt b/buildSrc/src/main/kotlin/GenerateBackendsTask.kt
index b46d76812..682cbc807 100644
--- a/buildSrc/src/main/kotlin/GenerateBackendsTask.kt
+++ b/buildSrc/src/main/kotlin/GenerateBackendsTask.kt
@@ -92,7 +92,8 @@ abstract class GenerateBackendsTask: DefaultTask()  {
         val keyPrefix = "${puz}_sym_key_"
         val keyIcons = definedKeyIcons.filter { it.startsWith(keyPrefix) }
             .map { "\"${it.removePrefix(keyPrefix)}\" to R.drawable.$it" }
-        return """object $objName : BackendName(
+        return """@UsedByJNI
+            |object $objName : BackendName(
             |    "$puz", "$display", "$title",
             |    R.drawable.$puz,
             |    R.string.desc_$puz, $toast, $toastNoArrows,