Split FinalTransformer into Final{Class,Method}Transformer

Signed-off-by: Graham <gpe@openrs2.org>

deob-bytecode/src/main/kotlin/org/openrs2/deob/bytecode/BytecodeDeobfuscatorModule.kt

@@ -15,8 +15,9 @@ import org.openrs2.deob.bytecode.transform.EmptyClassTransformer
 import org.openrs2.deob.bytecode.transform.ExceptionTracingTransformer
 import org.openrs2.deob.bytecode.transform.FernflowerExceptionTransformer
 import org.openrs2.deob.bytecode.transform.FieldOrderTransformer
+import org.openrs2.deob.bytecode.transform.FinalClassTransformer
 import org.openrs2.deob.bytecode.transform.FinalFieldTransformer
-import org.openrs2.deob.bytecode.transform.FinalTransformer
+import org.openrs2.deob.bytecode.transform.FinalMethodTransformer
 import org.openrs2.deob.bytecode.transform.InvokeSpecialTransformer
 import org.openrs2.deob.bytecode.transform.MethodOrderTransformer
 import org.openrs2.deob.bytecode.transform.MonitorTransformer
@@ -71,7 +72,8 @@ public object BytecodeDeobfuscatorModule : AbstractModule() {
         binder.addBinding().to(EmptyClassTransformer::class.java)
         binder.addBinding().to(MethodOrderTransformer::class.java)
         binder.addBinding().to(VisibilityTransformer::class.java)
-        binder.addBinding().to(FinalTransformer::class.java)
+        binder.addBinding().to(FinalClassTransformer::class.java)
+        binder.addBinding().to(FinalMethodTransformer::class.java)
         binder.addBinding().to(FinalFieldTransformer::class.java)
         binder.addBinding().to(OverrideTransformer::class.java)
         binder.addBinding().to(RedundantGotoTransformer::class.java)

deob-bytecode/src/main/kotlin/org/openrs2/deob/bytecode/transform/FinalClassTransformer.kt

@@ -0,0 +1,63 @@
+package org.openrs2.deob.bytecode.transform
+
+import com.github.michaelbull.logging.InlineLogger
+import org.objectweb.asm.Opcodes
+import org.objectweb.asm.tree.ClassNode
+import org.openrs2.asm.classpath.ClassPath
+import org.openrs2.asm.classpath.Library
+import org.openrs2.asm.transform.Transformer
+import javax.inject.Singleton
+
+@Singleton
+public class FinalClassTransformer : Transformer() {
+    private val superClasses = mutableListOf<String>()
+
+    override fun preTransform(classPath: ClassPath) {
+        superClasses.clear()
+    }
+
+    override fun transformClass(classPath: ClassPath, library: Library, clazz: ClassNode): Boolean {
+        val superClass = clazz.superName
+        if (superClass != null) {
+            superClasses += superClass
+        }
+
+        superClasses.addAll(clazz.interfaces)
+
+        return false
+    }
+
+    private fun isClassFinal(clazz: ClassNode): Boolean {
+        if ((clazz.access and (Opcodes.ACC_ABSTRACT or Opcodes.ACC_INTERFACE)) != 0) {
+            return false
+        }
+
+        return !superClasses.contains(clazz.name)
+    }
+
+    override fun postTransform(classPath: ClassPath) {
+        var classesChanged = 0
+
+        for (library in classPath.libraries) {
+            for (clazz in library) {
+                val access = clazz.access
+
+                if (isClassFinal(clazz)) {
+                    clazz.access = access or Opcodes.ACC_FINAL
+                } else {
+                    clazz.access = access and Opcodes.ACC_FINAL.inv()
+                }
+
+                if (clazz.access != access) {
+                    classesChanged++
+                }
+            }
+        }
+
+        logger.info { "Updated final modifier on $classesChanged classes" }
+    }
+
+    private companion object {
+        private val logger = InlineLogger()
+    }
+}

deob-bytecode/src/main/kotlin/org/openrs2/deob/bytecode/transform/FinalMethodTransformer.kt

@@ -12,28 +12,15 @@ import org.openrs2.util.collect.DisjointSet
 import javax.inject.Singleton
 
 @Singleton
-public class FinalTransformer : Transformer() {
-    private val superClasses = mutableListOf<String>()
+public class FinalMethodTransformer : Transformer() {
     private lateinit var inheritedMethodSets: DisjointSet<MemberRef>
     private var methodsChanged = 0
 
     override fun preTransform(classPath: ClassPath) {
-        superClasses.clear()
         inheritedMethodSets = classPath.createInheritedMethodSets()
         methodsChanged = 0
     }
 
-    override fun transformClass(classPath: ClassPath, library: Library, clazz: ClassNode): Boolean {
-        val superClass = clazz.superName
-        if (superClass != null) {
-            superClasses += superClass
-        }
-
-        superClasses.addAll(clazz.interfaces)
-
-        return false
-    }
-
     private fun isMethodFinal(classPath: ClassPath, clazz: ClassNode, method: MethodNode): Boolean {
         if (method.name == "<init>") {
             return false
@@ -83,34 +70,8 @@ public class FinalTransformer : Transformer() {
         return false
     }
 
-    private fun isClassFinal(clazz: ClassNode): Boolean {
-        if ((clazz.access and (Opcodes.ACC_ABSTRACT or Opcodes.ACC_INTERFACE)) != 0) {
-            return false
-        }
-
-        return !superClasses.contains(clazz.name)
-    }
-
     override fun postTransform(classPath: ClassPath) {
-        var classesChanged = 0
-
-        for (library in classPath.libraries) {
-            for (clazz in library) {
-                val access = clazz.access
-
-                if (isClassFinal(clazz)) {
-                    clazz.access = access or Opcodes.ACC_FINAL
-                } else {
-                    clazz.access = access and Opcodes.ACC_FINAL.inv()
-                }
-
-                if (clazz.access != access) {
-                    classesChanged++
-                }
-            }
-        }
-
-        logger.info { "Updated final modifier on $classesChanged classes and $methodsChanged methods" }
+        logger.info { "Updated final modifier on $methodsChanged methods" }
     }
 
     private companion object {