From 9a1599880b53e486f3ec292d6d636ebc6fb3e81a Mon Sep 17 00:00:00 2001
From: Major <major@emulate.rs>
Date: Sat, 7 Mar 2020 15:10:18 +0000
Subject: [PATCH] Don't rename classes containing native methods

Signed-off-by: Major <major@emulate.rs>
---
 .../java/dev/openrs2/deob/remap/TypedRemapper.kt | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/deob/src/main/java/dev/openrs2/deob/remap/TypedRemapper.kt b/deob/src/main/java/dev/openrs2/deob/remap/TypedRemapper.kt
index 185fa565..9ee06a34 100644
--- a/deob/src/main/java/dev/openrs2/deob/remap/TypedRemapper.kt
+++ b/deob/src/main/java/dev/openrs2/deob/remap/TypedRemapper.kt
@@ -109,7 +109,7 @@ class TypedRemapper private constructor(
             clazz: ClassMetadata
         ): String {
             val name = clazz.name
-            if (mapping.containsKey(name) || name in EXCLUDED_CLASSES || clazz.dependency) {
+            if (mapping.containsKey(name) || !isClassRenamable(clazz)) {
                 return mapping.getOrDefault(name, name)
             }
 
@@ -190,6 +190,20 @@ class TypedRemapper private constructor(
             return mapping
         }
 
+        private fun isClassRenamable(clazz: ClassMetadata): Boolean {
+            if (clazz.name in EXCLUDED_CLASSES || clazz.dependency) {
+                return false
+            }
+
+            for (method in clazz.methods) {
+                if (clazz.getAccess(method)!! and Opcodes.ACC_NATIVE != 0) {
+                    return false
+                }
+            }
+
+            return true
+        }
+
         fun isMethodImmutable(classPath: ClassPath, partition: DisjointSet.Partition<MemberRef>): Boolean {
             for (method in partition) {
                 val clazz = classPath[method.owner]!!