chore: Release v5.23.0-dev.3 [skip ci]

# [5.23.0-dev.3](https://github.com/ReVanced/revanced-patches/compare/v5.23.0-dev.2...v5.23.0-dev.3) (2025-05-05)

### Bug Fixes

* **YouTube:** Simplify litho filtering patch ([#4910](https://github.com/ReVanced/revanced-patches/issues/4910)) ([23fd720](23fd720fa7))

CHANGELOG.md

@@ -1,3 +1,17 @@
+# [5.23.0-dev.3](https://github.com/ReVanced/revanced-patches/compare/v5.23.0-dev.2...v5.23.0-dev.3) (2025-05-05)
+
+
+### Bug Fixes
+
+* **YouTube:** Simplify litho filtering patch ([#4910](https://github.com/ReVanced/revanced-patches/issues/4910)) ([bd53955](https://github.com/ReVanced/revanced-patches/commit/bd53955df738bb7b819eb91a3e776e9d2ca5c74a))
+
+# [5.23.0-dev.2](https://github.com/ReVanced/revanced-patches/compare/v5.23.0-dev.1...v5.23.0-dev.2) (2025-05-04)
+
+
+### Bug Fixes
+
+* **YouTube:** Improve litho filtering performance ([#4904](https://github.com/ReVanced/revanced-patches/issues/4904)) ([7b43986](https://github.com/ReVanced/revanced-patches/commit/7b43986871a68e5cb43331d2fb2fdb9ef67438ad))
+
 # [5.23.0-dev.1](https://github.com/ReVanced/revanced-patches/compare/v5.22.0...v5.23.0-dev.1) (2025-05-02)
 
 

extensions/youtube/src/main/java/app/revanced/extension/youtube/patches/components/LithoFilterPatch.java

@@ -87,6 +87,10 @@ public final class LithoFilterPatch {
      * the buffer is saved to a ThreadLocal so each calling thread does not interfere with other threads.
      */
     private static final ThreadLocal<ByteBuffer> bufferThreadLocal = new ThreadLocal<>();
+    /**
+     * Results of calling {@link #filter(String, StringBuilder)}.
+     */
+    private static final ThreadLocal<Boolean> filterResult = new ThreadLocal<>();
 
     static {
         for (Filter filter : filters) {
@@ -140,11 +144,22 @@ public final class LithoFilterPatch {
         }
     }
 
+    /**
+     * Injection point.
+     */
+    public static boolean shouldFilter() {
+        Boolean shouldFilter = filterResult.get();
+        return shouldFilter != null && shouldFilter;
+    }
+
     /**
      * Injection point.  Called off the main thread, and commonly called by multiple threads at the same time.
      */
-    @SuppressWarnings("unused")
-    public static boolean filter(@Nullable String lithoIdentifier, @NonNull StringBuilder pathBuilder) {
+    public static void filter(@Nullable String lithoIdentifier, StringBuilder pathBuilder) {
+        filterResult.set(handleFiltering(lithoIdentifier, pathBuilder));
+    }
+
+    private static boolean handleFiltering(@Nullable String lithoIdentifier, StringBuilder pathBuilder) {
         try {
             if (pathBuilder.length() == 0) {
                 return false;

gradle.properties

@@ -3,4 +3,4 @@ org.gradle.jvmargs = -Xms512M -Xmx2048M
 org.gradle.parallel = true
 android.useAndroidX = true
 kotlin.code.style = official
-version = 5.23.0-dev.1
+version = 5.23.0-dev.3

patches/api/patches.api

@@ -1534,6 +1534,7 @@ public final class app/revanced/patches/yuka/misc/unlockpremium/UnlockPremiumPat
 
 public final class app/revanced/util/BytecodeUtilsKt {
 	public static final fun addInstructionsAtControlFlowLabel (Lapp/revanced/patcher/util/proxy/mutableTypes/MutableMethod;ILjava/lang/String;)V
+	public static final fun addInstructionsAtControlFlowLabel (Lapp/revanced/patcher/util/proxy/mutableTypes/MutableMethod;ILjava/lang/String;[Lapp/revanced/patcher/util/smali/ExternalLabel;)V
 	public static final fun containsLiteralInstruction (Lcom/android/tools/smali/dexlib2/iface/Method;D)Z
 	public static final fun containsLiteralInstruction (Lcom/android/tools/smali/dexlib2/iface/Method;F)Z
 	public static final fun containsLiteralInstruction (Lcom/android/tools/smali/dexlib2/iface/Method;J)Z

patches/src/main/kotlin/app/revanced/patches/youtube/layout/returnyoutubedislike/Fingerprints.kt

@@ -5,18 +5,6 @@ import app.revanced.util.literal
 import com.android.tools.smali.dexlib2.AccessFlags
 import com.android.tools.smali.dexlib2.Opcode
 
-internal val conversionContextFingerprint = fingerprint {
-    returns("Ljava/lang/String;")
-    parameters()
-    strings(
-        ", widthConstraint=",
-        ", heightConstraint=",
-        ", templateLoggerFactory=",
-        ", rootDisposableContainer=",
-        "ConversionContext{containerInternal=",
-    )
-}
-
 internal val dislikeFingerprint = fingerprint {
     returns("V")
     strings("like/dislike")

patches/src/main/kotlin/app/revanced/patches/youtube/layout/returnyoutubedislike/ReturnYouTubeDislikePatch.kt

@@ -18,6 +18,7 @@ import app.revanced.patches.youtube.misc.playservice.versionCheckPatch
 import app.revanced.patches.youtube.misc.settings.addSettingPreference
 import app.revanced.patches.youtube.misc.settings.newIntent
 import app.revanced.patches.youtube.misc.settings.settingsPatch
+import app.revanced.patches.youtube.shared.conversionContextFingerprintToString
 import app.revanced.patches.youtube.shared.rollingNumberTextViewAnimationUpdateFingerprint
 import app.revanced.patches.youtube.video.videoid.hookPlayerResponseVideoId
 import app.revanced.patches.youtube.video.videoid.hookVideoId
@@ -113,11 +114,11 @@ val returnYouTubeDislikePatch = bytecodePatch(
         // This hook handles all situations, as it's where the created Spans are stored and later reused.
         // Find the field name of the conversion context.
         val conversionContextField = textComponentConstructorFingerprint.originalClassDef.fields.find {
-            it.type == conversionContextFingerprint.originalClassDef.type
+            it.type == conversionContextFingerprintToString.originalClassDef.type
         } ?: throw PatchException("Could not find conversion context field")
 
         textComponentLookupFingerprint.match(textComponentConstructorFingerprint.originalClassDef)
-        textComponentLookupFingerprint.method.apply {
+            .method.apply {
             // Find the instruction for creating the text data object.
             val textDataClassType = textComponentDataFingerprint.originalClassDef.type
 
@@ -160,12 +161,12 @@ val returnYouTubeDislikePatch = bytecodePatch(
             addInstructionsAtControlFlowLabel(
                 insertIndex,
                 """
-                        # Copy conversion context
-                        move-object/from16 v$tempRegister, p0
-                        iget-object v$tempRegister, v$tempRegister, $conversionContextField
-                        invoke-static { v$tempRegister, v$charSequenceRegister }, $EXTENSION_CLASS_DESCRIPTOR->onLithoTextLoaded(Ljava/lang/Object;Ljava/lang/CharSequence;)Ljava/lang/CharSequence;
-                        move-result-object v$charSequenceRegister
-                    """,
+                    # Copy conversion context
+                    move-object/from16 v$tempRegister, p0
+                    iget-object v$tempRegister, v$tempRegister, $conversionContextField
+                    invoke-static { v$tempRegister, v$charSequenceRegister }, $EXTENSION_CLASS_DESCRIPTOR->onLithoTextLoaded(Ljava/lang/Object;Ljava/lang/CharSequence;)Ljava/lang/CharSequence;
+                    move-result-object v$charSequenceRegister
+                """
             )
         }
 
@@ -201,11 +202,9 @@ val returnYouTubeDislikePatch = bytecodePatch(
             val charSequenceFieldReference =
                 getInstruction<ReferenceInstruction>(dislikesIndex).reference
 
-            val registerCount = implementation!!.registerCount
+            val conversionContextRegister = implementation!!.registerCount - parameters.size + 1
 
-            // This register is being overwritten, so it is free to use.
-            val freeRegister = registerCount - 1
-            val conversionContextRegister = registerCount - parameters.size + 1
+            val freeRegister = findFreeRegister(insertIndex, charSequenceInstanceRegister, conversionContextRegister)
 
             addInstructions(
                 insertIndex,

patches/src/main/kotlin/app/revanced/patches/youtube/misc/litho/filter/Fingerprints.kt

@@ -5,10 +5,6 @@ import app.revanced.util.literal
 import com.android.tools.smali.dexlib2.AccessFlags
 import com.android.tools.smali.dexlib2.Opcode
 
-/**
- * In 19.17 and earlier, this resolves to the same method as [readComponentIdentifierFingerprint].
- * In 19.18+ this resolves to a different method.
- */
 internal val componentContextParserFingerprint = fingerprint {
     strings(
         "TreeNode result must be set.",
@@ -17,11 +13,21 @@ internal val componentContextParserFingerprint = fingerprint {
     )
 }
 
+/**
+ * Resolves to the class found in [componentContextParserFingerprint].
+ * When patching 19.16 this fingerprint matches the same method as [componentContextParserFingerprint].
+ */
+internal val componentContextSubParserFingerprint = fingerprint {
+    strings(
+        "Number of bits must be positive"
+    )
+}
+
 internal val lithoFilterFingerprint = fingerprint {
     accessFlags(AccessFlags.STATIC, AccessFlags.CONSTRUCTOR)
     returns("V")
     custom { _, classDef ->
-        classDef.endsWith("LithoFilterPatch;")
+        classDef.endsWith("/LithoFilterPatch;")
     }
 }
 
@@ -37,14 +43,6 @@ internal val protobufBufferReferenceFingerprint = fingerprint {
     )
 }
 
-/**
-* In 19.17 and earlier, this resolves to the same method as [componentContextParserFingerprint].
-* In 19.18+ this resolves to a different method.
-*/
-internal val readComponentIdentifierFingerprint = fingerprint {
-    strings("Number of bits must be positive")
-}
-
 internal val emptyComponentFingerprint = fingerprint {
     accessFlags(AccessFlags.PRIVATE, AccessFlags.CONSTRUCTOR)
     parameters()

patches/src/main/kotlin/app/revanced/patches/youtube/misc/litho/filter/LithoFilterPatch.kt

@@ -4,25 +4,25 @@ package app.revanced.patches.youtube.misc.litho.filter
 
 import app.revanced.patcher.extensions.InstructionExtensions.addInstruction
 import app.revanced.patcher.extensions.InstructionExtensions.addInstructions
-import app.revanced.patcher.extensions.InstructionExtensions.addInstructionsWithLabels
 import app.revanced.patcher.extensions.InstructionExtensions.getInstruction
 import app.revanced.patcher.extensions.InstructionExtensions.removeInstructions
 import app.revanced.patcher.extensions.InstructionExtensions.replaceInstruction
 import app.revanced.patcher.patch.bytecodePatch
-import app.revanced.patcher.util.smali.ExternalLabel
 import app.revanced.patches.youtube.misc.extension.sharedExtensionPatch
-import app.revanced.patches.youtube.misc.playservice.is_19_18_or_greater
 import app.revanced.patches.youtube.misc.playservice.is_19_25_or_greater
 import app.revanced.patches.youtube.misc.playservice.is_20_05_or_greater
 import app.revanced.patches.youtube.misc.playservice.versionCheckPatch
+import app.revanced.patches.youtube.shared.conversionContextFingerprintToString
+import app.revanced.util.addInstructionsAtControlFlowLabel
 import app.revanced.util.findFreeRegister
+import app.revanced.util.findInstructionIndicesReversedOrThrow
 import app.revanced.util.getReference
 import app.revanced.util.indexOfFirstInstructionOrThrow
 import app.revanced.util.indexOfFirstInstructionReversedOrThrow
 import com.android.tools.smali.dexlib2.AccessFlags
 import com.android.tools.smali.dexlib2.Opcode
 import com.android.tools.smali.dexlib2.iface.instruction.OneRegisterInstruction
-import com.android.tools.smali.dexlib2.iface.instruction.TwoRegisterInstruction
+import com.android.tools.smali.dexlib2.iface.instruction.ReferenceInstruction
 import com.android.tools.smali.dexlib2.iface.reference.FieldReference
 import com.android.tools.smali.dexlib2.iface.reference.MethodReference
 
@@ -53,42 +53,33 @@ val lithoFilterPatch = bytecodePatch(
      * The buffer is a large byte array that represents the component tree.
      * This byte array is searched for strings that indicate the current component.
      *
-     * The following pseudocode shows how the patch works:
+     * All modifications done here must allow all the original code to still execute
+     * even when filtering, otherwise memory leaks or poor app performance may occur.
+     *
+     * The following pseudocode shows how this patch works:
      *
      * class SomeOtherClass {
-     *    // Called before ComponentContextParser.parseBytesToComponentContext method.
+     *    // Called before ComponentContextParser.parseComponent() method.
      *    public void someOtherMethod(ByteBuffer byteBuffer) {
      *        ExtensionClass.setProtoBuffer(byteBuffer); // Inserted by this patch.
      *        ...
      *   }
      * }
      *
-     * When patching 19.17 and earlier:
-     *
      * class ComponentContextParser {
-     *    public ComponentContext ReadComponentIdentifierFingerprint(...) {
+     *    public Component parseComponent() {
      *        ...
-     *        if (extensionClass.filter(identifier, pathBuilder)); // Inserted by this patch.
+     *
+     *        // Checks if the component should be filtered.
+     *        // Sets a thread local with the filtering result.
+     *        extensionClass.filter(identifier, pathBuilder);  // Inserted by this patch.
+     *
+     *        ...
+     *
+     *        if (extensionClass.shouldFilter()) {  // Inserted by this patch.
      *            return emptyComponent;
-     *        ...
-     *    }
-     * }
-     *
-     * When patching 19.18 and later:
-     *
-     * class ComponentContextParser {
-     *    public ComponentContext parseBytesToComponentContext(...) {
-     *        ...
-     *        if (ReadComponentIdentifierFingerprint() == null); // Inserted by this patch.
-     *            return emptyComponent;
-     *        ...
-     *    }
-     *
-     *    public ComponentIdentifierObj readComponentIdentifier(...) {
-     *        ...
-     *        if (extensionClass.filter(identifier, pathBuilder)); // Inserted by this patch.
-     *            return null;
-     *        ...
+     *        }
+     *        return originalUnpatchedComponent; // Original code.
      *    }
      * }
      */
@@ -103,7 +94,7 @@ val lithoFilterPatch = bytecodePatch(
                     2,
                     """
                         new-instance v1, $classDescriptor
-                        invoke-direct {v1}, $classDescriptor-><init>()V
+                        invoke-direct { v1 }, $classDescriptor-><init>()V
                         const/16 v2, ${filterCount++}
                         aput-object v1, v0, v2
                     """,
@@ -115,110 +106,105 @@ val lithoFilterPatch = bytecodePatch(
 
         protobufBufferReferenceFingerprint.method.addInstruction(
             0,
-            " invoke-static { p2 }, $EXTENSION_CLASS_DESCRIPTOR->setProtoBuffer(Ljava/nio/ByteBuffer;)V",
+            "invoke-static { p2 }, $EXTENSION_CLASS_DESCRIPTOR->setProtoBuffer(Ljava/nio/ByteBuffer;)V",
         )
 
         // endregion
 
         // region Hook the method that parses bytes into a ComponentContext.
 
-        val readComponentMethod = readComponentIdentifierFingerprint.originalMethod
-        // Get the only static method in the class.
-        val builderMethodDescriptor = emptyComponentFingerprint.classDef.methods.first { method ->
-            AccessFlags.STATIC.isSet(method.accessFlags)
-        }
-        // Only one field.
-        val emptyComponentField = classBy { classDef ->
-            builderMethodDescriptor.returnType == classDef.type
-        }!!.immutableClass.fields.single()
-
-        // Returns an empty component instead of the original component.
-        fun createReturnEmptyComponentInstructions(register: Int): String =
-            """
-                move-object/from16 v$register, p1
-                invoke-static { v$register }, $builderMethodDescriptor
-                move-result-object v$register
-                iget-object v$register, v$register, $emptyComponentField
-                return-object v$register
-            """
-
+        // Allow the method to run to completion, and override the
+        // return value with an empty component if it should be filtered.
+        // It is important to allow the original code to always run to completion,
+        // otherwise memory leaks and poor app performance can occur.
+        //
+        // The extension filtering result needs to be saved off somewhere, but cannot
+        // save to a class field since the target class is called by multiple threads.
+        // It would be great if there was a way to change the register count of the
+        // method implementation and save the result to a high register to later use
+        // in the method, but there is no simple way to do that.
+        // Instead save the extension filter result to a thread local and check the
+        // filtering result at each method return index.
+        // String field for the litho identifier.
         componentContextParserFingerprint.method.apply {
-            // 19.18 and later require patching 2 methods instead of one.
-            // Otherwise the modifications done here are the same for all targets.
-            if (is_19_18_or_greater) {
-                // Get the method name of the ReadComponentIdentifierFingerprint call.
-                val readComponentMethodCallIndex = indexOfFirstInstructionOrThrow {
-                    val reference = getReference<MethodReference>()
-                    reference?.definingClass == readComponentMethod.definingClass &&
-                        reference.name == readComponentMethod.name
+            val conversionContextClass = conversionContextFingerprintToString.originalClassDef
+
+            val conversionContextIdentifierField = componentContextSubParserFingerprint.match(
+                componentContextParserFingerprint.originalClassDef
+            ).let {
+                // Identifier field is loaded just before the string declaration.
+                val index = it.method.indexOfFirstInstructionReversedOrThrow(
+                    it.stringMatches!!.first().index
+                ) {
+                    val reference = getReference<FieldReference>()
+                    reference?.definingClass == conversionContextClass.type
+                            && reference.type == "Ljava/lang/String;"
                 }
-
-                // Result of read component, and also a free register.
-                val register = getInstruction<OneRegisterInstruction>(readComponentMethodCallIndex + 1).registerA
-
-                // Insert after 'move-result-object'
-                val insertHookIndex = readComponentMethodCallIndex + 2
-
-                // Return an EmptyComponent instead of the original component if the filterState method returns true.
-                addInstructionsWithLabels(
-                    insertHookIndex,
-                    """
-                        if-nez v$register, :unfiltered
-
-                        # Component was filtered in ReadComponentIdentifierFingerprint hook
-                        ${createReturnEmptyComponentInstructions(register)}
-                    """,
-                    ExternalLabel("unfiltered", getInstruction(insertHookIndex)),
-                )
+                it.method.getInstruction<ReferenceInstruction>(index).getReference<FieldReference>()
             }
-        }
 
-        // endregion
+            // StringBuilder field for the litho path.
+            val conversionContextPathBuilderField = conversionContextClass.fields
+                .single { field -> field.type == "Ljava/lang/StringBuilder;" }
 
-        // region Read component then store the result.
+            val conversionContextResultIndex = indexOfFirstInstructionOrThrow {
+                val reference = getReference<MethodReference>()
+                reference?.returnType == conversionContextClass.type
+            } + 1
 
-        readComponentIdentifierFingerprint.method.apply {
-            val insertHookIndex = indexOfFirstInstructionOrThrow {
-                opcode == Opcode.IPUT_OBJECT &&
-                    getReference<FieldReference>()?.type == "Ljava/lang/StringBuilder;"
-            }
-            val stringBuilderRegister = getInstruction<TwoRegisterInstruction>(insertHookIndex).registerA
-
-            // Identifier is saved to a field just before the string builder.
-            val identifierRegister = getInstruction<TwoRegisterInstruction>(
-                indexOfFirstInstructionReversedOrThrow(insertHookIndex) {
-                    opcode == Opcode.IPUT_OBJECT &&
-                        getReference<FieldReference>()?.type == "Ljava/lang/String;"
-                },
+            val conversionContextResultRegister = getInstruction<OneRegisterInstruction>(
+                conversionContextResultIndex
             ).registerA
 
-            val freeRegister = findFreeRegister(insertHookIndex, identifierRegister, stringBuilderRegister)
-            val invokeFilterInstructions = """
-                invoke-static { v$identifierRegister, v$stringBuilderRegister }, $EXTENSION_CLASS_DESCRIPTOR->filter(Ljava/lang/String;Ljava/lang/StringBuilder;)Z
-                move-result v$freeRegister
-                if-eqz v$freeRegister, :unfiltered
-            """
-
-            addInstructionsWithLabels(
-                insertHookIndex,
-                if (is_19_18_or_greater) {
-                    """
-                        $invokeFilterInstructions
-                        
-                        # Return null, and the ComponentContextParserFingerprint hook 
-                        # handles returning an empty component.
-                        const/4 v$freeRegister, 0x0
-                        return-object v$freeRegister
-                    """
-                } else {
-                    """
-                        $invokeFilterInstructions
-                        
-                        ${createReturnEmptyComponentInstructions(freeRegister)}
-                    """
-                },
-                ExternalLabel("unfiltered", getInstruction(insertHookIndex)),
+            val identifierRegister = findFreeRegister(
+                conversionContextResultIndex, conversionContextResultRegister
             )
+            val stringBuilderRegister = findFreeRegister(
+                conversionContextResultIndex, conversionContextResultRegister, identifierRegister
+            )
+
+            // Check if the component should be filtered, and save the result to a thread local.
+            addInstructionsAtControlFlowLabel(
+                conversionContextResultIndex + 1,
+                """
+                    iget-object v$identifierRegister, v$conversionContextResultRegister, $conversionContextIdentifierField
+                    iget-object v$stringBuilderRegister, v$conversionContextResultRegister, $conversionContextPathBuilderField
+                    invoke-static { v$identifierRegister, v$stringBuilderRegister }, $EXTENSION_CLASS_DESCRIPTOR->filter(Ljava/lang/String;Ljava/lang/StringBuilder;)V
+                """
+            )
+
+            // Get the only static method in the class.
+            val builderMethodDescriptor = emptyComponentFingerprint.classDef.methods.single {
+                method -> AccessFlags.STATIC.isSet(method.accessFlags)
+            }
+            // Only one field.
+            val emptyComponentField = classBy { classDef ->
+                classDef.type == builderMethodDescriptor.returnType
+            }!!.immutableClass.fields.single()
+
+            // Check at each return value if the component is filtered,
+            // and return an empty component if filtering is needed.
+            findInstructionIndicesReversedOrThrow(Opcode.RETURN_OBJECT).forEach { returnIndex ->
+                val freeRegister = findFreeRegister(returnIndex)
+
+                addInstructionsAtControlFlowLabel(
+                    returnIndex,
+                    """
+                        invoke-static { }, $EXTENSION_CLASS_DESCRIPTOR->shouldFilter()Z
+                        move-result v$freeRegister
+                        if-eqz v$freeRegister, :unfiltered
+        
+                        move-object/from16 v$freeRegister, p1
+                        invoke-static { v$freeRegister }, $builderMethodDescriptor
+                        move-result-object v$freeRegister
+                        iget-object v$freeRegister, v$freeRegister, $emptyComponentField
+                        return-object v$freeRegister
+        
+                        :unfiltered
+                        nop    
+                    """
+                )
+            }
         }
 
         // endregion

patches/src/main/kotlin/app/revanced/patches/youtube/shared/Fingerprints.kt

@@ -4,6 +4,21 @@ import app.revanced.patcher.fingerprint
 import com.android.tools.smali.dexlib2.AccessFlags
 import com.android.tools.smali.dexlib2.Opcode
 
+internal val conversionContextFingerprintToString = fingerprint {
+    parameters()
+    strings(
+        "ConversionContext{containerInternal=",
+        ", widthConstraint=",
+        ", heightConstraint=",
+        ", templateLoggerFactory=",
+        ", rootDisposableContainer=",
+        ", identifierProperty="
+    )
+    custom { method, _ ->
+        method.name == "toString"
+    }
+}
+
 internal val autoRepeatFingerprint = fingerprint {
     accessFlags(AccessFlags.PUBLIC, AccessFlags.FINAL)
     returns("V")

patches/src/main/kotlin/app/revanced/util/BytecodeUtils.kt

@@ -11,6 +11,7 @@ import app.revanced.patcher.patch.BytecodePatchContext
 import app.revanced.patcher.patch.PatchException
 import app.revanced.patcher.util.proxy.mutableTypes.MutableClass
 import app.revanced.patcher.util.proxy.mutableTypes.MutableMethod
+import app.revanced.patcher.util.smali.ExternalLabel
 import app.revanced.patches.shared.misc.mapping.get
 import app.revanced.patches.shared.misc.mapping.resourceMappingPatch
 import app.revanced.patches.shared.misc.mapping.resourceMappings
@@ -207,6 +208,26 @@ fun MutableMethod.injectHideViewCall(
     "invoke-static { v$viewRegister }, $classDescriptor->$targetMethod(Landroid/view/View;)V",
 )
 
+
+/**
+ * Inserts instructions at a given index, using the existing control flow label at that index.
+ * Inserted instructions can have it's own control flow labels as well.
+ *
+ * Effectively this changes the code from:
+ * :label
+ * (original code)
+ *
+ * Into:
+ * :label
+ * (patch code)
+ * (original code)
+ */
+// TODO: delete this on next major version bump.
+fun MutableMethod.addInstructionsAtControlFlowLabel(
+    insertIndex: Int,
+    instructions: String
+) = addInstructionsAtControlFlowLabel(insertIndex, instructions, *arrayOf<ExternalLabel>())
+
 /**
  * Inserts instructions at a given index, using the existing control flow label at that index.
  * Inserted instructions can have it's own control flow labels as well.
@@ -223,13 +244,14 @@ fun MutableMethod.injectHideViewCall(
 fun MutableMethod.addInstructionsAtControlFlowLabel(
     insertIndex: Int,
     instructions: String,
+    vararg externalLabels: ExternalLabel
 ) {
     // Duplicate original instruction and add to +1 index.
     addInstruction(insertIndex + 1, getInstruction(insertIndex))
 
     // Add patch code at same index as duplicated instruction,
     // so it uses the original instruction control flow label.
-    addInstructionsWithLabels(insertIndex + 1, instructions)
+    addInstructionsWithLabels(insertIndex + 1, instructions, *externalLabels)
 
     // Remove original non duplicated instruction.
     removeInstruction(insertIndex)