chore(release): 14.1.0 [skip ci]

# [14.1.0](https://github.com/ReVanced/revanced-patcher/compare/v14.0.0...v14.1.0) (2023-08-24)

### Bug Fixes

* move version properties file to correct package ([e985676](e985676c2d))

### Features

* properly make use of logging facade ([ba56a6a](ba56a6a2ee))

.gitattributes

@@ -0,0 +1,9 @@
+#
+# https://help.github.com/articles/dealing-with-line-endings/
+#
+# Linux start script should use lf
+/gradlew        text eol=lf
+
+# These are Windows script files and should use crlf
+*.bat           text eol=crlf
+

.github/workflows/release.yml

@@ -23,17 +23,20 @@ jobs:
           # https://github.com/cycjimmy/semantic-release-action#private-packages
           persist-credentials: false
           fetch-depth: 0
-      - name: Setup JDK
-        uses: actions/setup-java@v3
+      - name: Cache
+        uses: actions/cache@v3
         with:
-          java-version: '17'
-          distribution: 'zulu'
-          cache: gradle
-      - name: Setup Node.js
-        uses: actions/setup-node@v3
-        with:
-          node-version: "18"
-          cache: 'npm'
+          path: |
+            ${{ runner.home }}/.gradle/caches
+            ${{ runner.home }}/.gradle/wrapper
+            .gradle
+            build
+            node_modules
+          key: ${{ runner.os }}-gradle-npm-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties', 'package-lock.json') }}
+      - name: Build with Gradle
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: ./gradlew clean --no-daemon
       - name: Setup semantic-release
         run: npm install
       - name: Release

.releaserc

@@ -7,7 +7,13 @@
     }
   ],
   "plugins": [
-    "@semantic-release/commit-analyzer",
+    [
+      "@semantic-release/commit-analyzer", {
+        "releaseRules": [
+          { "type": "build", "scope": "Needs bump", "release": "patch" }
+        ]
+      }
+    ],
     "@semantic-release/release-notes-generator",
     "@semantic-release/changelog",
     "gradle-semantic-release-plugin",

build.gradle.kts

@@ -1,32 +1,21 @@
 plugins {
-    kotlin("jvm") version "1.8.10"
+    kotlin("jvm") version "1.8.20"
     `maven-publish`
 }
 
 group = "app.revanced"
 
-val githubUsername: String = project.findProperty("gpr.user") as? String ?: System.getenv("GITHUB_ACTOR")
-val githubPassword: String = project.findProperty("gpr.key") as? String ?: System.getenv("GITHUB_TOKEN")
-
-repositories {
-    mavenCentral()
-    maven {
-        url = uri("https://maven.pkg.github.com/revanced/multidexlib2")
-        credentials {
-            username = githubUsername
-            password = githubPassword
-        }
-    }
-}
-
 dependencies {
-    implementation("xpp3:xpp3:1.1.4c")
-    implementation("app.revanced:smali:2.5.3-a3836654")
-    implementation("app.revanced:multidexlib2:2.5.3-a3836654")
-    implementation("app.revanced:apktool-lib:2.7.0")
+    implementation(libs.kotlinx.coroutines.core)
+    implementation(libs.xpp3)
+    implementation(libs.smali)
+    implementation(libs.multidexlib2)
+    implementation(libs.apktool.lib)
+    implementation(libs.kotlin.reflect)
 
-    implementation("org.jetbrains.kotlin:kotlin-reflect:1.8.20-RC")
-    testImplementation("org.jetbrains.kotlin:kotlin-test:1.8.20-RC")
+    compileOnly(libs.android)
+
+    testImplementation(libs.kotlin.test)
 }
 
 tasks {
@@ -36,35 +25,28 @@ tasks {
             events("PASSED", "SKIPPED", "FAILED")
         }
     }
+
     processResources {
         expand("projectVersion" to project.version)
     }
 }
 
-java {
-    withSourcesJar()
-}
-
-kotlin {
-    jvmToolchain(11)
-}
+kotlin { jvmToolchain(11) }
 
 publishing {
     repositories {
-        if (System.getenv("GITHUB_ACTOR") != null)
-            maven {
-                name = "GitHubPackages"
-                url = uri("https://maven.pkg.github.com/revanced/revanced-patcher")
-                credentials {
-                    username = System.getenv("GITHUB_ACTOR")
-                    password = System.getenv("GITHUB_TOKEN")
-                }
+        mavenLocal()
+        maven {
+            name = "GitHubPackages"
+            url = uri("https://maven.pkg.github.com/revanced/revanced-patcher")
+            credentials {
+                username = System.getenv("GITHUB_ACTOR")
+                password = System.getenv("GITHUB_TOKEN")
             }
-        else
-            mavenLocal()
+        }
     }
     publications {
-        register<MavenPublication>("gpr") {
+        create<MavenPublication>("gpr") {
             from(components["java"])
         }
     }

gradle.properties

@@ -1,2 +1,4 @@
+org.gradle.parallel = true
+org.gradle.caching = true
 kotlin.code.style = official
-version = 10.0.0
+version = 14.1.0

gradle/libs.versions.toml

@@ -0,0 +1,21 @@
+[versions]
+android = "4.1.1.4"
+kotlin-reflect = "1.9.0"
+apktool-lib = "2.8.2-5"
+kotlin-test = "1.8.20-RC"
+kotlinx-coroutines-core = "1.7.1"
+multidexlib2 = "3.0.3.r2"
+shadow = "8.1.1"
+smali = "3.0.3"
+xpp3 = "1.1.4c"
+
+
+[libraries]
+android = { module = "com.google.android:android", version.ref = "android" }
+kotlin-reflect = { module = "org.jetbrains.kotlin:kotlin-reflect", version.ref = "kotlin-reflect" }
+apktool-lib = { module = "app.revanced:apktool-lib", version.ref = "apktool-lib" }
+kotlin-test = { module = "org.jetbrains.kotlin:kotlin-test", version.ref = "kotlin-test" }
+kotlinx-coroutines-core = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-core", version.ref = "kotlinx-coroutines-core" }
+multidexlib2 = { module = "app.revanced:multidexlib2", version.ref = "multidexlib2" }
+smali = { module = "com.android.tools.smali:smali", version.ref = "smali" }
+xpp3 = { module = "xpp3:xpp3", version.ref = "xpp3" }

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,7 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.1.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.2-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

gradlew

@@ -1,7 +1,7 @@
 #!/bin/sh
 
 #
-# Copyright © 2015-2021 the original authors.
+# Copyright © 2015-2021 the original authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -32,10 +32,10 @@
 #       Busybox and similar reduced shells will NOT work, because this script
 #       requires all of these POSIX shell features:
 #         * functions;
-#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
-#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
-#         * compound commands having a testable exit status, especially «case»;
-#         * various built-in commands including «command», «set», and «ulimit».
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
 #
 #   Important for patching:
 #
@@ -55,7 +55,7 @@
 #       Darwin, MinGW, and NonStop.
 #
 #   (3) This script is generated from the Groovy template
-#       https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
 #       within the Gradle project.
 #
 #       You can find Gradle at https://github.com/gradle/gradle/.
@@ -80,13 +80,10 @@ do
     esac
 done
 
-APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
-
-APP_NAME="Gradle"
+# This is normally unused
+# shellcheck disable=SC2034
 APP_BASE_NAME=${0##*/}
-
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
 
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD=maximum
@@ -133,22 +130,29 @@ location of your Java installation."
     fi
 else
     JAVACMD=java
-    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
 
 Please set the JAVA_HOME variable in your environment to match the
 location of your Java installation."
+    fi
 fi
 
 # Increase the maximum file descriptors if we can.
 if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
     case $MAX_FD in #(
       max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045
         MAX_FD=$( ulimit -H -n ) ||
             warn "Could not query maximum file descriptor limit"
     esac
     case $MAX_FD in  #(
       '' | soft) :;; #(
       *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045
         ulimit -n "$MAX_FD" ||
             warn "Could not set maximum file descriptor limit to $MAX_FD"
     esac
@@ -193,6 +197,10 @@ if "$cygwin" || "$msys" ; then
     done
 fi
 
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
 # Collect all arguments for the java command;
 #   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
 #     shell script including quotes and variable substitutions, so put them in
@@ -205,6 +213,12 @@ set -- \
         org.gradle.wrapper.GradleWrapperMain \
         "$@"
 
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
 # Use "xargs" to parse quoted args.
 #
 # With -n1 it outputs one arg per line, with the quotes and backslashes removed.

gradlew.bat

@@ -14,7 +14,7 @@
 @rem limitations under the License.
 @rem
 
-@if "%DEBUG%" == "" @echo off
+@if "%DEBUG%"=="" @echo off
 @rem ##########################################################################
 @rem
 @rem  Gradle startup script for Windows
@@ -25,7 +25,8 @@
 if "%OS%"=="Windows_NT" setlocal
 
 set DIRNAME=%~dp0
-if "%DIRNAME%" == "" set DIRNAME=.
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
 set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
 
@@ -40,7 +41,7 @@ if defined JAVA_HOME goto findJavaFromJavaHome
 
 set JAVA_EXE=java.exe
 %JAVA_EXE% -version >NUL 2>&1
-if "%ERRORLEVEL%" == "0" goto execute
+if %ERRORLEVEL% equ 0 goto execute
 
 echo.
 echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
@@ -75,13 +76,15 @@ set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
 
 :end
 @rem End local scope for the variables with windows NT shell
-if "%ERRORLEVEL%"=="0" goto mainEnd
+if %ERRORLEVEL% equ 0 goto mainEnd
 
 :fail
 rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
 rem the _cmd.exe /c_ return code!
-if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
-exit /b 1
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
 
 :mainEnd
 if "%OS%"=="Windows_NT" endlocal

settings.gradle.kts

@@ -1 +1,22 @@
+val githubUsername: String = providers.gradleProperty("gpr.user").orNull ?: System.getenv("GITHUB_ACTOR")
+val githubPassword: String = providers.gradleProperty("gpr.key").orNull ?: System.getenv("GITHUB_TOKEN")
+
+dependencyResolutionManagement {
+    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
+    repositories {
+        mavenCentral()
+        google()
+        mavenLocal()
+        listOf("multidexlib2", "apktool").forEach { repo ->
+            maven {
+                url = uri("https://maven.pkg.github.com/revanced/$repo")
+                credentials {
+                    username = githubUsername
+                    password = githubPassword
+                }
+            }
+        }
+    }
+}
+
 rootProject.name = "revanced-patcher"

src/main/kotlin/app/revanced/patcher/IntegrationsConsumer.kt

@@ -0,0 +1,8 @@
+package app.revanced.patcher
+
+import java.io.File
+
+@FunctionalInterface
+interface IntegrationsConsumer {
+    fun acceptIntegrations(integrations: List<File>)
+}

src/main/kotlin/app/revanced/patcher/PackageMetadata.kt

@@ -0,0 +1,14 @@
+package app.revanced.patcher
+
+import brut.androlib.apk.ApkInfo
+
+/**
+ * Metadata about a package.
+ */
+class PackageMetadata internal constructor(internal val apkInfo: ApkInfo) {
+    lateinit var packageName: String
+        internal set
+
+    lateinit var packageVersion: String
+        internal set
+}

src/main/kotlin/app/revanced/patcher/PatchBundleLoader.kt

@@ -0,0 +1,71 @@
+@file:Suppress("unused")
+
+package app.revanced.patcher
+
+import app.revanced.patcher.extensions.AnnotationExtensions.findAnnotationRecursively
+import app.revanced.patcher.patch.Patch
+import app.revanced.patcher.patch.PatchClass
+import dalvik.system.DexClassLoader
+import lanchon.multidexlib2.BasicDexFileNamer
+import lanchon.multidexlib2.MultiDexIO
+import java.io.File
+import java.net.URLClassLoader
+import java.util.jar.JarFile
+
+/**
+ * A patch bundle.
+ *
+ * @param fromClasses The classes to get [Patch]es from.
+ */
+sealed class PatchBundleLoader private constructor(
+    fromClasses: Iterable<Class<*>>
+) : MutableList<PatchClass> by mutableListOf() {
+    init {
+        fromClasses.filter {
+            if (it.isAnnotation) return@filter false
+
+            it.findAnnotationRecursively(app.revanced.patcher.patch.annotations.Patch::class) != null
+        }.map {
+            @Suppress("UNCHECKED_CAST")
+            it as PatchClass
+        }.let { addAll(it) }
+    }
+
+    /**
+     * A [PatchBundleLoader] for JAR files.
+     *
+     * @param patchBundles The path to patch bundles of JAR format.
+     */
+    class Jar(vararg patchBundles: File) :
+        PatchBundleLoader(with(URLClassLoader(patchBundles.map { it.toURI().toURL() }.toTypedArray())) {
+            patchBundles.flatMap { patchBundle ->
+                // Get the names of all classes in the DEX file.
+
+                JarFile(patchBundle).entries().asSequence()
+                    .filter { it.name.endsWith(".class") }
+                    .map { it.name.replace('/', '.').replace(".class", "") }
+                    .map { loadClass(it) }
+            }
+        })
+
+    /**
+     * A [PatchBundleLoader] for [Dex] files.
+     *
+     * @param patchBundles The path to patch bundles of DEX format.
+     */
+    class Dex(vararg patchBundles: File) : PatchBundleLoader(with(
+        DexClassLoader(
+            patchBundles.joinToString(File.pathSeparator) { it.absolutePath },
+            null,
+            null,
+            PatchBundleLoader::class.java.classLoader
+        )
+    ) {
+        patchBundles
+            .flatMap {
+                MultiDexIO.readDexFile(true, it, BasicDexFileNamer(), null, null).classes
+            }
+            .map { classDef -> classDef.type.substring(1, classDef.length - 1) }
+            .map { loadClass(it) }
+    })
+}

src/main/kotlin/app/revanced/patcher/PatchExecutorFunction.kt

@@ -0,0 +1,8 @@
+package app.revanced.patcher
+
+import app.revanced.patcher.patch.PatchResult
+import kotlinx.coroutines.flow.Flow
+import java.util.function.Function
+
+@FunctionalInterface
+interface PatchExecutorFunction : Function<Boolean, Flow<PatchResult>>

src/main/kotlin/app/revanced/patcher/PatcherContext.kt

@@ -1,64 +1,37 @@
 package app.revanced.patcher
 
-import app.revanced.patcher.data.*
-import app.revanced.patcher.logging.Logger
+import app.revanced.patcher.data.BytecodeContext
+import app.revanced.patcher.data.ResourceContext
 import app.revanced.patcher.patch.Patch
-import app.revanced.patcher.util.ClassMerger.merge
-import org.jf.dexlib2.iface.ClassDef
-import java.io.File
+import app.revanced.patcher.patch.PatchClass
+import brut.androlib.apk.ApkInfo
+import brut.directory.ExtFile
 
-data class PatcherContext(
-    val classes: MutableList<ClassDef>,
-    val resourceCacheDirectory: File,
-) {
-    val packageMetadata = PackageMetadata()
-    internal val patches = mutableListOf<Class<out Patch<Context>>>()
-    internal val integrations = Integrations(this)
-    internal val bytecodeContext = BytecodeContext(classes)
-    internal val resourceContext = ResourceContext(resourceCacheDirectory)
+/**
+ * A context for ReVanced [Patcher].
+ *
+ * @param options The [PatcherOptions] used to create this context.
+ */
+class PatcherContext internal constructor(options: PatcherOptions) {
+    /**
+     * [PackageMetadata] of the supplied [PatcherOptions.inputFile].
+     */
+    val packageMetadata = PackageMetadata(ApkInfo(ExtFile(options.inputFile)))
 
-    internal class Integrations(val context: PatcherContext) {
-        var callback: ((File) -> Unit)? = null
-        private val integrations: MutableList<File> = mutableListOf()
+    /**
+     * The list of [Patch]es to execute.
+     */
+    internal val patches = mutableListOf<PatchClass>()
 
-        fun add(integrations: List<File>) = this@Integrations.integrations.addAll(integrations)
+    /**
+     * The [ResourceContext] of this [PatcherContext].
+     * This holds the current state of the resources.
+     */
+    internal val resourceContext = ResourceContext(this, options)
 
-        /**
-         * Merge integrations.
-         * @param logger A logger.
-         */
-        fun merge(logger: Logger) {
-            with(context.bytecodeContext.classes) {
-                for (integrations in integrations) {
-                    callback?.let { it(integrations) }
-
-                    for (classDef in lanchon.multidexlib2.MultiDexIO.readDexFile(
-                        true,
-                        integrations,
-                        NAMER,
-                        null,
-                        null
-                    ).classes) {
-                        val type = classDef.type
-
-                        val result = classes.findIndexed { it.type == type }
-                        if (result == null) {
-                            logger.trace("Merging type $type")
-                            classes.add(classDef)
-                            continue
-                        }
-
-                        val (existingClass, existingClassIndex) = result
-
-                        logger.trace("Type $type exists. Adding missing methods and fields.")
-
-                        existingClass.merge(classDef, context, logger).let { mergedClass ->
-                            if (mergedClass !== existingClass) // referential equality check
-                                classes[existingClassIndex] = mergedClass
-                        }
-                    }
-                }
-            }
-        }
-    }
+    /**
+     * The [BytecodeContext] of this [PatcherContext].
+     * This holds the current state of the bytecode.
+     */
+    internal val bytecodeContext = BytecodeContext(options)
 }

src/main/kotlin/app/revanced/patcher/PatcherOptions.kt

@@ -1,21 +1,73 @@
 package app.revanced.patcher
 
-import app.revanced.patcher.logging.Logger
+import app.revanced.patcher.data.ResourceContext
 import app.revanced.patcher.logging.impl.NopLogger
+import brut.androlib.Config
 import java.io.File
+import java.util.logging.Logger
 
 /**
- * Options for the [Patcher].
- * @param inputFile The input file (usually an apk file).
- * @param resourceCacheDirectory Directory to cache resources.
- * @param aaptPath Optional path to a custom aapt binary.
- * @param frameworkFolderLocation Optional path to a custom framework folder.
- * @param logger Custom logger implementation for the [Patcher].
+ * Options for ReVanced [Patcher].
+ * @param inputFile The input file to patch.
+ * @param resourceCachePath The path to the directory to use for caching resources.
+ * @param aaptBinaryPath The path to a custom aapt binary.
+ * @param frameworkFileDirectory The path to the directory to cache the framework file in.
+ * @param unusedLogger The logger to use for logging.
  */
-data class PatcherOptions(
+data class PatcherOptions
+@Deprecated("Use the constructor without the logger parameter instead")
+constructor(
     internal val inputFile: File,
-    internal val resourceCacheDirectory: String,
-    internal val aaptPath: String? = null,
-    internal val frameworkFolderLocation: String? = null,
-    internal val logger: Logger = NopLogger
-)
+    internal val resourceCachePath: File = File("revanced-resource-cache"),
+    internal val aaptBinaryPath: String? = null,
+    internal val frameworkFileDirectory: String? = null,
+    internal val unusedLogger: app.revanced.patcher.logging.Logger = NopLogger
+) {
+    private val logger = Logger.getLogger(PatcherOptions::class.java.name)
+
+    /**
+     * The mode to use for resource decoding.
+     * @see ResourceContext.ResourceDecodingMode
+     */
+    internal var resourceDecodingMode = ResourceContext.ResourceDecodingMode.MANIFEST_ONLY
+
+    /**
+     * The configuration to use for resource decoding and compiling.
+     */
+    internal val resourceConfig = Config.getDefaultConfig().apply {
+        useAapt2 = true
+        aaptPath = aaptBinaryPath ?: ""
+        frameworkDirectory = frameworkFileDirectory
+    }
+
+    /**
+     * Options for ReVanced [Patcher].
+     * @param inputFile The input file to patch.
+     * @param resourceCachePath The path to the directory to use for caching resources.
+     * @param aaptBinaryPath The path to a custom aapt binary.
+     * @param frameworkFileDirectory The path to the directory to cache the framework file in.
+     */
+    constructor(
+        inputFile: File,
+        resourceCachePath: File = File("revanced-resource-cache"),
+        aaptBinaryPath: String? = null,
+        frameworkFileDirectory: String? = null,
+    ) : this(
+        inputFile,
+        resourceCachePath,
+        aaptBinaryPath,
+        frameworkFileDirectory,
+        NopLogger
+    )
+
+    fun recreateResourceCacheDirectory() = resourceCachePath.also {
+        if (it.exists()) {
+            logger.info("Deleting existing resource cache directory")
+
+            if (!it.deleteRecursively())
+                logger.severe("Failed to delete existing resource cache directory")
+        }
+
+        it.mkdirs()
+    }
+}

src/main/kotlin/app/revanced/patcher/PatcherResult.kt

@@ -1,16 +1,23 @@
 package app.revanced.patcher
 
-import app.revanced.patcher.util.dex.DexFile
 import java.io.File
+import java.io.InputStream
 
 /**
  * The result of a patcher.
  * @param dexFiles The patched dex files.
- * @param doNotCompress List of relative paths to files to exclude from compressing.
  * @param resourceFile File containing resources that need to be extracted into the APK.
+ * @param doNotCompress List of relative paths of files to exclude from compressing.
  */
 data class PatcherResult(
-    val dexFiles: List<DexFile>,
-    val doNotCompress: List<String>? = null,
-    val resourceFile: File?
-)
+    val dexFiles: List<PatchedDexFile>,
+    val resourceFile: File?,
+    val doNotCompress: List<String>? = null
+) {
+    /**
+     * Wrapper for dex files.
+     * @param name The original name of the dex file.
+     * @param stream The dex file as [InputStream].
+     */
+    class PatchedDexFile(val name: String, val stream: InputStream)
+}

src/main/kotlin/app/revanced/patcher/PatchesConsumer.kt

@@ -0,0 +1,8 @@
+package app.revanced.patcher
+
+import app.revanced.patcher.patch.PatchClass
+
+@FunctionalInterface
+interface PatchesConsumer {
+    fun acceptPatches(patches: List<PatchClass>)
+}

src/main/kotlin/app/revanced/patcher/annotation/MetadataAnnotation.kt

@@ -18,14 +18,4 @@ annotation class Name(
 @Target(AnnotationTarget.CLASS)
 annotation class Description(
     val description: String,
-)
-
-
-/**
- * Annotation to version a [Patch].
- * @param version The version of a [Patch].
- */
-@Target(AnnotationTarget.CLASS)
-annotation class Version(
-    val version: String,
-)
+)

src/main/kotlin/app/revanced/patcher/data/BytecodeContext.kt

@@ -0,0 +1,155 @@
+package app.revanced.patcher.data
+
+import app.revanced.patcher.PatcherContext
+import app.revanced.patcher.PatcherOptions
+import app.revanced.patcher.PatcherResult
+import app.revanced.patcher.patch.Patch
+import app.revanced.patcher.patch.annotations.RequiresIntegrations
+import app.revanced.patcher.util.ClassMerger.merge
+import app.revanced.patcher.util.ProxyClassList
+import app.revanced.patcher.util.method.MethodWalker
+import app.revanced.patcher.util.proxy.ClassProxy
+import com.android.tools.smali.dexlib2.Opcodes
+import com.android.tools.smali.dexlib2.iface.ClassDef
+import com.android.tools.smali.dexlib2.iface.DexFile
+import com.android.tools.smali.dexlib2.iface.Method
+import com.android.tools.smali.dexlib2.writer.io.MemoryDataStore
+import lanchon.multidexlib2.BasicDexFileNamer
+import lanchon.multidexlib2.DexIO
+import lanchon.multidexlib2.MultiDexIO
+import java.io.File
+import java.io.Flushable
+import java.util.logging.Logger
+
+/**
+ * A context for bytecode.
+ * This holds the current state of the bytecode.
+ *
+ * @param options The [PatcherOptions] used to create this context.
+ */
+class BytecodeContext internal constructor(private val options: PatcherOptions) :
+    Context<List<PatcherResult.PatchedDexFile>> {
+    private val logger = Logger.getLogger(BytecodeContext::class.java.name)
+
+    /**
+     * [Opcodes] of the supplied [PatcherOptions.inputFile].
+     */
+    internal lateinit var opcodes: Opcodes
+
+    /**
+     * The list of classes.
+     */
+    val classes by lazy {
+        ProxyClassList(
+            MultiDexIO.readDexFile(
+                true, options.inputFile, BasicDexFileNamer(), null, null
+            ).also { opcodes = it.opcodes }.classes.toMutableSet()
+        )
+    }
+
+    /**
+     * The [Integrations] of this [PatcherContext].
+     */
+    internal val integrations = Integrations()
+
+    /**
+     * Find a class by a given class name.
+     *
+     * @param className The name of the class.
+     * @return A proxy for the first class that matches the class name.
+     */
+    fun findClass(className: String) = findClass { it.type.contains(className) }
+
+    /**
+     * Find a class by a given predicate.
+     *
+     * @param predicate A predicate to match the class.
+     * @return A proxy for the first class that matches the predicate.
+     */
+    fun findClass(predicate: (ClassDef) -> Boolean) =
+        // if we already proxied the class matching the predicate...
+        classes.proxies.firstOrNull { predicate(it.immutableClass) } ?:
+        // else resolve the class to a proxy and return it, if the predicate is matching a class
+        classes.find(predicate)?.let { proxy(it) }
+
+    /**
+     * Proxy a class.
+     * This will allow the class to be modified.
+     *
+     * @param classDef The class to proxy.
+     * @return A proxy for the class.
+     */
+    fun proxy(classDef: ClassDef) = this.classes.proxies.find { it.immutableClass.type == classDef.type } ?: let {
+        ClassProxy(classDef).also { this.classes.add(it) }
+    }
+
+    /**
+     * Create a [MethodWalker] instance for the current [BytecodeContext].
+     *
+     * @param startMethod The method to start at.
+     * @return A [MethodWalker] instance.
+     */
+    fun toMethodWalker(startMethod: Method) = MethodWalker(this, startMethod)
+
+    /**
+     * The integrations of a [PatcherContext].
+     */
+    internal inner class Integrations : MutableList<File> by mutableListOf(), Flushable {
+        /**
+         * Whether to merge integrations.
+         * True when any supplied [Patch] is annotated with [RequiresIntegrations].
+         */
+        var merge = false
+
+        /**
+         * Merge integrations into the [BytecodeContext] and flush all [Integrations].
+         */
+        override fun flush() {
+            if (!merge) return
+
+            this@Integrations.forEach { integrations ->
+                MultiDexIO.readDexFile(
+                    true,
+                    integrations, BasicDexFileNamer(),
+                    null,
+                    null
+                ).classes.forEach classDef@{ classDef ->
+                    val existingClass = classes.find { it == classDef } ?: run {
+                        logger.fine("Merging $classDef")
+                        classes.add(classDef)
+                        return@classDef
+                    }
+
+                    logger.fine("$classDef exists. Adding missing methods and fields.")
+
+                    existingClass.merge(classDef, this@BytecodeContext).let { mergedClass ->
+                        // If the class was merged, replace the original class with the merged class.
+                        if (mergedClass === existingClass) return@let
+                        classes.apply { remove(existingClass); add(mergedClass) }
+                    }
+                }
+            }
+
+            clear()
+        }
+    }
+
+    /**
+     * Compile bytecode from the [BytecodeContext].
+     *
+     * @return The compiled bytecode.
+     */
+    override fun get(): List<PatcherResult.PatchedDexFile> {
+        logger.info("Compiling modified dex files")
+
+        return mutableMapOf<String, MemoryDataStore>().apply {
+            MultiDexIO.writeDexFile(
+                true, -1, // Defaults to amount of available cores.
+                this, BasicDexFileNamer(), object : DexFile {
+                    override fun getClasses() = this@BytecodeContext.classes.also(ProxyClassList::replaceClasses)
+                    override fun getOpcodes() = this@BytecodeContext.opcodes
+                }, DexIO.DEFAULT_MAX_DEX_POOL_SIZE, null
+            )
+        }.map { PatcherResult.PatchedDexFile(it.key, it.value.readAt(0)) }
+    }
+}

src/main/kotlin/app/revanced/patcher/data/Context.kt

@@ -1,170 +1,9 @@
 package app.revanced.patcher.data
 
-import app.revanced.patcher.util.ProxyBackedClassList
-import app.revanced.patcher.util.method.MethodWalker
-import org.jf.dexlib2.iface.ClassDef
-import org.jf.dexlib2.iface.Method
-import org.w3c.dom.Document
-import java.io.Closeable
-import java.io.File
-import java.io.InputStream
-import java.io.OutputStream
-import javax.xml.parsers.DocumentBuilderFactory
-import javax.xml.transform.TransformerFactory
-import javax.xml.transform.dom.DOMSource
-import javax.xml.transform.stream.StreamResult
+import java.util.function.Supplier
 
 /**
- * A common interface to constrain [Context] to [BytecodeContext] and [ResourceContext].
+ * A common interface for contexts such as [ResourceContext] and [BytecodeContext].
  */
 
-sealed interface Context
-
-class BytecodeContext internal constructor(classes: MutableList<ClassDef>) : Context {
-    /**
-     * The list of classes.
-     */
-    val classes = ProxyBackedClassList(classes)
-
-    /**
-     * Find a class by a given class name.
-     *
-     * @param className The name of the class.
-     * @return A proxy for the first class that matches the class name.
-     */
-    fun findClass(className: String) = findClass { it.type.contains(className) }
-
-    /**
-     * Find a class by a given predicate.
-     *
-     * @param predicate A predicate to match the class.
-     * @return A proxy for the first class that matches the predicate.
-     */
-    fun findClass(predicate: (ClassDef) -> Boolean) =
-        // if we already proxied the class matching the predicate...
-        classes.proxies.firstOrNull { predicate(it.immutableClass) } ?:
-        // else resolve the class to a proxy and return it, if the predicate is matching a class
-        classes.find(predicate)?.let { proxy(it) }
-
-    fun proxy(classDef: ClassDef): app.revanced.patcher.util.proxy.ClassProxy {
-        var proxy = this.classes.proxies.find { it.immutableClass.type == classDef.type }
-        if (proxy == null) {
-            proxy = app.revanced.patcher.util.proxy.ClassProxy(classDef)
-            this.classes.add(proxy)
-        }
-        return proxy
-    }
-}
-
-/**
- * Create a [MethodWalker] instance for the current [BytecodeContext].
- *
- * @param startMethod The method to start at.
- * @return A [MethodWalker] instance.
- */
-fun BytecodeContext.toMethodWalker(startMethod: Method): MethodWalker {
-    return MethodWalker(this, startMethod)
-}
-
-internal inline fun <T> Iterable<T>.findIndexed(predicate: (T) -> Boolean): Pair<T, Int>? {
-    for ((index, element) in this.withIndex()) {
-        if (predicate(element)) {
-            return element to index
-        }
-    }
-    return null
-}
-
-class ResourceContext internal constructor(private val resourceCacheDirectory: File) : Context, Iterable<File> {
-    val xmlEditor = XmlFileHolder()
-
-    operator fun get(path: String) = resourceCacheDirectory.resolve(path)
-
-    override fun iterator() = resourceCacheDirectory.walkTopDown().iterator()
-
-    inner class XmlFileHolder {
-        operator fun get(inputStream: InputStream) =
-            DomFileEditor(inputStream)
-
-        operator fun get(path: String): DomFileEditor {
-            return DomFileEditor(this@ResourceContext[path])
-        }
-
-    }
-}
-
-/**
- * Wrapper for a file that can be edited as a dom document.
- *
- * This constructor does not check for locks to the file when writing.
- * Use the secondary constructor.
- *
- * @param inputStream the input stream to read the xml file from.
- * @param outputStream the output stream to write the xml file to. If null, the file will be read only.
- *
- */
-class DomFileEditor internal constructor(
-    private val inputStream: InputStream,
-    private val outputStream: Lazy<OutputStream>? = null,
-) : Closeable {
-    // path to the xml file to unlock the resource when closing the editor
-    private var filePath: String? = null
-    private var closed: Boolean = false
-
-    /**
-     * The document of the xml file
-     */
-    val file: Document = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(inputStream)
-        .also(Document::normalize)
-
-
-    // lazily open an output stream
-    // this is required because when constructing a DomFileEditor the output stream is created along with the input stream, which is not allowed
-    // the workaround is to lazily create the output stream. This way it would be used after the input stream is closed, which happens in the constructor
-    constructor(file: File) : this(file.inputStream(), lazy { file.outputStream() }) {
-        // increase the lock
-        locks.merge(file.path, 1, Integer::sum)
-        filePath = file.path
-    }
-
-    /**
-     * Closes the editor. Write backs and decreases the lock count.
-     *
-     * Will not write back to the file if the file is still locked.
-     */
-    override fun close() {
-        if (closed) return
-
-        inputStream.close()
-
-        // if the output stream is not null, do not close it
-        outputStream?.let {
-            // prevent writing to same file, if it is being locked
-            // isLocked will be false if the editor was created through a stream
-            val isLocked = filePath?.let { path ->
-                val isLocked = locks[path]!! > 1
-                // decrease the lock count if the editor was opened for a file
-                locks.merge(path, -1, Integer::sum)
-                isLocked
-            } ?: false
-
-            // if unlocked, write back to the file
-            if (!isLocked) {
-                it.value.use { stream ->
-                    val result = StreamResult(stream)
-                    TransformerFactory.newInstance().newTransformer().transform(DOMSource(file), result)
-                }
-
-                it.value.close()
-                return
-            }
-        }
-
-        closed = true
-    }
-
-    private companion object {
-        // map of concurrent open files
-        val locks = mutableMapOf<String, Int>()
-    }
-}
+sealed interface Context<T> : Supplier<T>

src/main/kotlin/app/revanced/patcher/data/PackageMetadata.kt

@@ -1,13 +0,0 @@
-package app.revanced.patcher.data
-
-import brut.androlib.meta.MetaInfo
-
-/**
- * Metadata about a package.
- */
-class PackageMetadata {
-    lateinit var packageName: String
-    lateinit var packageVersion: String
-
-    internal val metaInfo: MetaInfo = MetaInfo()
-}

src/main/kotlin/app/revanced/patcher/data/ResourceContext.kt

@@ -0,0 +1,160 @@
+package app.revanced.patcher.data
+
+import app.revanced.patcher.PatcherContext
+import app.revanced.patcher.PatcherOptions
+import app.revanced.patcher.util.DomFileEditor
+import brut.androlib.AaptInvoker
+import brut.androlib.ApkDecoder
+import brut.androlib.apk.UsesFramework
+import brut.androlib.res.Framework
+import brut.androlib.res.ResourcesDecoder
+import brut.androlib.res.decoder.AndroidManifestResourceParser
+import brut.androlib.res.decoder.XmlPullStreamDecoder
+import brut.androlib.res.xml.ResXmlPatcher
+import brut.directory.ExtFile
+import java.io.File
+import java.io.InputStream
+import java.io.OutputStream
+import java.nio.file.Files
+import java.util.logging.Logger
+
+/**
+ * A context for resources.
+ * This holds the current state of the resources.
+ *
+ * @param context The [PatcherContext] to create the context for.
+ */
+class ResourceContext internal constructor(
+    private val context: PatcherContext,
+    private val options: PatcherOptions
+) : Context<File?>, Iterable<File> {
+    private val logger = Logger.getLogger(ResourceContext::class.java.name)
+
+    val xmlEditor = XmlFileHolder()
+
+    /**
+     * Decode resources for the patcher.
+     *
+     * @param mode The [ResourceDecodingMode] to use when decoding.
+     */
+    internal fun decodeResources(mode: ResourceDecodingMode) = with(context.packageMetadata.apkInfo) {
+        // Needed to decode resources.
+        val resourcesDecoder = ResourcesDecoder(options.resourceConfig, this)
+
+        when (mode) {
+            ResourceDecodingMode.FULL -> {
+                val outDir = options.recreateResourceCacheDirectory()
+
+                logger.info("Decoding resources")
+
+                resourcesDecoder.decodeResources(outDir)
+                resourcesDecoder.decodeManifest(outDir)
+
+                // Needed to record uncompressed files.
+                val apkDecoder = ApkDecoder(options.resourceConfig, this)
+                apkDecoder.recordUncompressedFiles(resourcesDecoder.resFileMapping)
+
+                usesFramework = UsesFramework().apply {
+                    ids = resourcesDecoder.resTable.listFramePackages().map { it.id }
+                }
+            }
+
+            ResourceDecodingMode.MANIFEST_ONLY -> {
+                logger.info("Decoding app manifest")
+
+                // Decode manually instead of using resourceDecoder.decodeManifest
+                // because it does not support decoding to an OutputStream.
+                XmlPullStreamDecoder(
+                    AndroidManifestResourceParser(resourcesDecoder.resTable),
+                    resourcesDecoder.resXmlSerializer
+                ).decodeManifest(
+                    apkFile.directory.getFileInput("AndroidManifest.xml"),
+                    // Older Android versions do not support OutputStream.nullOutputStream()
+                    object : OutputStream() {
+                        override fun write(b: Int) { /* do nothing */
+                        }
+                    }
+                )
+
+                // Get the package name and version from the manifest using the XmlPullStreamDecoder.
+                // XmlPullStreamDecoder.decodeManifest() sets metadata.apkInfo.
+                context.packageMetadata.let { metadata ->
+                    metadata.packageName = resourcesDecoder.resTable.packageRenamed
+                    versionInfo.let {
+                        metadata.packageVersion = it.versionName ?: it.versionCode
+                    }
+                }
+            }
+        }
+
+    }
+
+    operator fun get(path: String) = options.resourceCachePath.resolve(path)
+
+    override fun iterator() = options.resourceCachePath.walkTopDown().iterator()
+
+
+    /**
+     * Compile resources from the [ResourceContext].
+     *
+     * @return The compiled resources.
+     */
+    override fun get(): File? {
+        var resourceFile: File? = null
+
+        if (options.resourceDecodingMode == ResourceDecodingMode.FULL) {
+            logger.info("Compiling modified resources")
+
+            val cacheDirectory = ExtFile(options.resourceCachePath)
+            val aaptFile = cacheDirectory.resolve("aapt_temp_file").also {
+                Files.deleteIfExists(it.toPath())
+            }.also { resourceFile = it }
+
+            try {
+                AaptInvoker(
+                    options.resourceConfig, context.packageMetadata.apkInfo
+                ).invokeAapt(aaptFile,
+                    cacheDirectory.resolve("AndroidManifest.xml").also {
+                        ResXmlPatcher.fixingPublicAttrsInProviderAttributes(it)
+                    },
+                    cacheDirectory.resolve("res"),
+                    null,
+                    null,
+                    context.packageMetadata.apkInfo.usesFramework.let { usesFramework ->
+                        usesFramework.ids.map { id ->
+                            Framework(options.resourceConfig).getFrameworkApk(id, usesFramework.tag)
+                        }.toTypedArray()
+                    })
+            } finally {
+                cacheDirectory.close()
+            }
+        }
+
+        return resourceFile
+    }
+
+    /**
+     * The type of decoding the resources.
+     */
+    internal enum class ResourceDecodingMode {
+        /**
+         * Decode all resources.
+         */
+        FULL,
+
+        /**
+         * Decode the manifest file only.
+         */
+        MANIFEST_ONLY,
+    }
+
+    inner class XmlFileHolder {
+        operator fun get(inputStream: InputStream) =
+            DomFileEditor(inputStream)
+
+        operator fun get(path: String): DomFileEditor {
+            return DomFileEditor(this@ResourceContext[path])
+        }
+
+    }
+}

src/main/kotlin/app/revanced/patcher/extensions/AnnotationExtensions.kt

@@ -1,83 +1,33 @@
 package app.revanced.patcher.extensions
 
-import app.revanced.patcher.annotation.*
-import app.revanced.patcher.data.Context
-import app.revanced.patcher.fingerprint.method.annotation.FuzzyPatternScanMethod
-import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
-import app.revanced.patcher.patch.OptionsContainer
-import app.revanced.patcher.patch.Patch
-import app.revanced.patcher.patch.PatchOptions
-import app.revanced.patcher.patch.annotations.DependsOn
-import app.revanced.patcher.patch.annotations.RequiresIntegrations
 import kotlin.reflect.KClass
-import kotlin.reflect.KVisibility
-import kotlin.reflect.full.companionObject
-import kotlin.reflect.full.companionObjectInstance
 
-/**
- * Recursively find a given annotation on a class.
- * @param targetAnnotation The annotation to find.
- * @return The annotation.
- */
-private fun <T : Annotation> Class<*>.findAnnotationRecursively(targetAnnotation: KClass<T>) =
-    this.findAnnotationRecursively(targetAnnotation.java, mutableSetOf())
+internal object AnnotationExtensions {
+    /**
+     * Recursively find a given annotation on a class.
+     *
+     * @param targetAnnotation The annotation to find.
+     * @return The annotation.
+     */
+    fun <T : Annotation> Class<*>.findAnnotationRecursively(targetAnnotation: KClass<T>): T? {
+        fun <T : Annotation> Class<*>.findAnnotationRecursively(
+            targetAnnotation: Class<T>, traversed: MutableSet<Annotation>
+        ): T? {
+            val found = this.annotations.firstOrNull { it.annotationClass.java.name == targetAnnotation.name }
 
+            @Suppress("UNCHECKED_CAST") if (found != null) return found as T
 
-private fun <T : Annotation> Class<*>.findAnnotationRecursively(
-    targetAnnotation: Class<T>, traversed: MutableSet<Annotation>
-): T? {
-    val found = this.annotations.firstOrNull { it.annotationClass.java.name == targetAnnotation.name }
+            for (annotation in this.annotations) {
+                if (traversed.contains(annotation)) continue
+                traversed.add(annotation)
 
-    @Suppress("UNCHECKED_CAST") if (found != null) return found as T
-
-    for (annotation in this.annotations) {
-        if (traversed.contains(annotation)) continue
-        traversed.add(annotation)
-
-        return (annotation.annotationClass.java.findAnnotationRecursively(targetAnnotation, traversed)) ?: continue
-    }
-
-    return null
-}
-
-object PatchExtensions {
-    val Class<out Patch<Context>>.patchName: String
-        get() = findAnnotationRecursively(Name::class)?.name ?: this.simpleName
-
-    val Class<out Patch<Context>>.version
-        get() = findAnnotationRecursively(Version::class)?.version
-
-    val Class<out Patch<Context>>.include
-        get() = findAnnotationRecursively(app.revanced.patcher.patch.annotations.Patch::class)!!.include
-
-    val Class<out Patch<Context>>.description
-        get() = findAnnotationRecursively(Description::class)?.description
-
-    val Class<out Patch<Context>>.dependencies
-        get() = findAnnotationRecursively(DependsOn::class)?.dependencies
-
-    val Class<out Patch<Context>>.compatiblePackages
-        get() = findAnnotationRecursively(Compatibility::class)?.compatiblePackages
-
-    internal val Class<out Patch<Context>>.requiresIntegrations
-        get() = findAnnotationRecursively(RequiresIntegrations::class) != null
-
-    val Class<out Patch<Context>>.options: PatchOptions?
-        get() = kotlin.companionObject?.let { cl ->
-            if (cl.visibility != KVisibility.PUBLIC) return null
-            kotlin.companionObjectInstance?.let {
-                (it as? OptionsContainer)?.options
+                return (annotation.annotationClass.java.findAnnotationRecursively(targetAnnotation, traversed))
+                    ?: continue
             }
+
+            return null
         }
-}
 
-object MethodFingerprintExtensions {
-    val MethodFingerprint.name: String
-        get() = this.javaClass.simpleName
-
-    val MethodFingerprint.fuzzyPatternScanMethod
-        get() = javaClass.findAnnotationRecursively(FuzzyPatternScanMethod::class)
-
-    val MethodFingerprint.fuzzyScanThreshold
-        get() = fuzzyPatternScanMethod?.threshold ?: 0
+        return this.findAnnotationRecursively(targetAnnotation.java, mutableSetOf())
+    }
 }

src/main/kotlin/app/revanced/patcher/extensions/Extensions.kt

@@ -1,236 +1,33 @@
 package app.revanced.patcher.extensions
 
 import app.revanced.patcher.util.proxy.mutableTypes.MutableMethod
-import app.revanced.patcher.util.proxy.mutableTypes.MutableMethod.Companion.toMutable
-import app.revanced.patcher.util.smali.ExternalLabel
-import app.revanced.patcher.util.smali.toInstruction
-import app.revanced.patcher.util.smali.toInstructions
-import org.jf.dexlib2.AccessFlags
-import org.jf.dexlib2.builder.BuilderInstruction
-import org.jf.dexlib2.builder.BuilderOffsetInstruction
-import org.jf.dexlib2.builder.Label
-import org.jf.dexlib2.builder.MutableMethodImplementation
-import org.jf.dexlib2.builder.instruction.*
-import org.jf.dexlib2.iface.Method
-import org.jf.dexlib2.iface.instruction.Instruction
-import org.jf.dexlib2.immutable.ImmutableMethod
-import org.jf.dexlib2.immutable.ImmutableMethodImplementation
-import java.io.OutputStream
-
-infix fun AccessFlags.or(other: AccessFlags) = this.value or other.value
-infix fun Int.or(other: AccessFlags) = this or other.value
-
-fun MutableMethodImplementation.addInstructions(index: Int, instructions: List<BuilderInstruction>) {
-    for (i in instructions.lastIndex downTo 0) {
-        this.addInstruction(index, instructions[i])
-    }
-}
-
-fun MutableMethodImplementation.addInstructions(instructions: List<BuilderInstruction>) {
-    for (instruction in instructions) {
-        this.addInstruction(instruction)
-    }
-}
-
-fun MutableMethodImplementation.replaceInstructions(index: Int, instructions: List<BuilderInstruction>) {
-    for (i in instructions.lastIndex downTo 0) {
-        this.replaceInstruction(index + i, instructions[i])
-    }
-}
-
-fun MutableMethodImplementation.removeInstructions(index: Int, count: Int) {
-    for (i in count - 1 downTo 0) {
-        this.removeInstruction(index + i)
-    }
-}
+import com.android.tools.smali.dexlib2.AccessFlags
 
 /**
- * Clones the method.
- * @param registerCount This parameter allows you to change the register count of the method.
- * This may be a positive or negative number.
- * @return The **immutable** cloned method. Call [toMutable] or [cloneMutable] to get a **mutable** copy.
- */
-internal fun Method.clone(registerCount: Int = 0): ImmutableMethod {
-    val clonedImplementation = implementation?.let {
-        ImmutableMethodImplementation(
-            it.registerCount + registerCount,
-            it.instructions,
-            it.tryBlocks,
-            it.debugItems,
-        )
-    }
-    return ImmutableMethod(
-        returnType, name, parameters, returnType, accessFlags, annotations, hiddenApiRestrictions, clonedImplementation
-    )
-}
-
-/**
- * Add a smali instruction to the method.
- * @param instruction The smali instruction to add.
- */
-fun MutableMethod.addInstruction(instruction: String) =
-    this.implementation!!.addInstruction(instruction.toInstruction(this))
-
-/**
- * Add a smali instruction to the method.
- * @param index The index to insert the instruction at.
- * @param instruction The smali instruction to add.
- */
-fun MutableMethod.addInstruction(index: Int, instruction: String) =
-    this.implementation!!.addInstruction(index, instruction.toInstruction(this))
-
-/**
- * Replace a smali instruction within the method.
- * @param index The index to replace the instruction at.
- * @param instruction The smali instruction to place.
- */
-fun MutableMethod.replaceInstruction(index: Int, instruction: String) =
-    this.implementation!!.replaceInstruction(index, instruction.toInstruction(this))
-
-/**
- * Remove a smali instruction within the method.
- * @param index The index to delete the instruction at.
- */
-fun MutableMethod.removeInstruction(index: Int) = this.implementation!!.removeInstruction(index)
-
-/**
- * Create a label for the instruction at given index in the method's implementation.
+ * Create a label for the instruction at given index.
+ *
  * @param index The index to create the label for the instruction at.
  * @return The label.
  */
-fun MutableMethod.label(index: Int) = this.implementation!!.newLabelForIndex(index)
+fun MutableMethod.newLabel(index: Int) = implementation!!.newLabelForIndex(index)
 
 /**
- * Get an instruction at the given index in the method's implementation.
- * @param index The index to get the instruction at.
- * @return The instruction.
+ * Perform a bitwise OR operation between two [AccessFlags].
+ *
+ * @param other The other [AccessFlags] to perform the operation with.
  */
-fun MutableMethod.instruction(index: Int): BuilderInstruction = this.implementation!!.instructions[index]
+infix fun AccessFlags.or(other: AccessFlags) = value or other.value
 
 /**
- * Get an instruction at the given index in the method's implementation.
- * @param index The index to get the instruction at.
- * @param T The type of instruction to return.
- * @return The instruction.
+ * Perform a bitwise OR operation between an [AccessFlags] and an [Int].
+ *
+ * @param other The [Int] to perform the operation with.
  */
-fun <T> MutableMethod.instruction(index: Int): T = instruction(index) as T
+infix fun Int.or(other: AccessFlags) = this or other.value
 
 /**
- * Add smali instructions to the method.
- * @param index The index to insert the instructions at.
- * @param smali The smali instructions to add.
- * @param externalLabels A list of [ExternalLabel] representing a list of labels for instructions which are not in the method to compile.
+ * Perform a bitwise OR operation between an [Int] and an [AccessFlags].
+ *
+ * @param other The [AccessFlags] to perform the operation with.
  */
-
-fun MutableMethod.addInstructions(index: Int, smali: String, externalLabels: List<ExternalLabel> = emptyList()) {
-    // Create reference dummy instructions for the instructions.
-    val nopedSmali = StringBuilder(smali).also { builder ->
-        externalLabels.forEach { (name, _) ->
-            builder.append("\n:$name\nnop")
-        }
-    }.toString()
-
-    // Compile the instructions with the dummy labels
-    val compiledInstructions = nopedSmali.toInstructions(this)
-
-    // Add the compiled list of instructions to the method.
-    val methodImplementation = this.implementation!!
-    methodImplementation.addInstructions(index, compiledInstructions.subList(0, compiledInstructions.size - externalLabels.size))
-
-    val methodInstructions = methodImplementation.instructions
-    methodInstructions.subList(index, index + compiledInstructions.size - externalLabels.size)
-        .forEachIndexed { compiledInstructionIndex, compiledInstruction ->
-            // If the compiled instruction is not an offset instruction, skip it.
-            if (compiledInstruction !is BuilderOffsetInstruction) return@forEachIndexed
-
-            /**
-             * Creates a new label for the instruction and replaces it with the label of the [compiledInstruction] at [compiledInstructionIndex].
-             */
-            fun Instruction.makeNewLabel() {
-                // Create the final label.
-                val label = methodImplementation.newLabelForIndex(methodInstructions.indexOf(this))
-                // Create the final instruction with the new label.
-                val newInstruction = replaceOffset(
-                    compiledInstruction, label
-                )
-                // Replace the instruction pointing to the dummy label with the new instruction pointing to the real instruction.
-                methodImplementation.replaceInstruction(index + compiledInstructionIndex, newInstruction)
-            }
-
-            // If the compiled instruction targets its own instruction,
-            // which means it points to some of its own, simply an offset has to be applied.
-            val labelIndex = compiledInstruction.target.location.index
-            if (labelIndex < compiledInstructions.size - externalLabels.size) {
-                // Get the targets index (insertion index + the index of the dummy instruction).
-                methodInstructions[index + labelIndex].makeNewLabel()
-                return@forEachIndexed
-            }
-
-            // Since the compiled instruction points to a dummy instruction,
-            // we can find the real instruction which it was created for by calculation.
-
-            // Get the index of the instruction in the externalLabels list which the dummy instruction was created for.
-            // this line works because we created the dummy instructions in the same order as the externalLabels list.
-            val (_, instruction) = externalLabels[(compiledInstructions.size - 1) - labelIndex]
-            instruction.makeNewLabel()
-        }
-}
-
-/**
- * Add smali instructions to the end of the method.
- * @param instructions The smali instructions to add.
- */
-fun MutableMethod.addInstructions(instructions: String, labels: List<ExternalLabel> = emptyList()) =
-    this.addInstructions(this.implementation!!.instructions.size, instructions, labels)
-
-/**
- * Replace smali instructions within the method.
- * @param index The index to replace the instructions at.
- * @param instructions The smali instructions to place.
- */
-fun MutableMethod.replaceInstructions(index: Int, instructions: String) =
-    this.implementation!!.replaceInstructions(index, instructions.toInstructions(this))
-
-/**
- * Remove smali instructions from the method.
- * @param index The index to remove the instructions at.
- * @param count The amount of instructions to remove.
- */
-fun MutableMethod.removeInstructions(index: Int, count: Int) = this.implementation!!.removeInstructions(index, count)
-
-private fun replaceOffset(
-    i: BuilderOffsetInstruction, label: Label
-): BuilderOffsetInstruction {
-    return when (i) {
-        is BuilderInstruction10t -> BuilderInstruction10t(i.opcode, label)
-        is BuilderInstruction20t -> BuilderInstruction20t(i.opcode, label)
-        is BuilderInstruction21t -> BuilderInstruction21t(i.opcode, i.registerA, label)
-        is BuilderInstruction22t -> BuilderInstruction22t(i.opcode, i.registerA, i.registerB, label)
-        is BuilderInstruction30t -> BuilderInstruction30t(i.opcode, label)
-        is BuilderInstruction31t -> BuilderInstruction31t(i.opcode, i.registerA, label)
-        else -> throw IllegalStateException("A non-offset instruction was given, this should never happen!")
-    }
-}
-
-/**
- * Clones the method.
- * @param registerCount This parameter allows you to change the register count of the method.
- * This may be a positive or negative number.
- * @return The **mutable** cloned method. Call [clone] to get an **immutable** copy.
- */
-internal fun Method.cloneMutable(registerCount: Int = 0) = clone(registerCount).toMutable()
-
-internal fun parametersEqual(
-    parameters1: Iterable<CharSequence>, parameters2: Iterable<CharSequence>
-): Boolean {
-    if (parameters1.count() != parameters2.count()) return false
-    val iterator1 = parameters1.iterator()
-    parameters2.forEach {
-        if (!it.startsWith(iterator1.next())) return false
-    }
-    return true
-}
-
-internal val nullOutputStream = object : OutputStream() {
-    override fun write(b: Int) {}
-}
+infix fun AccessFlags.or(other: Int) = value or other

src/main/kotlin/app/revanced/patcher/extensions/MethodFingerprintExtensions.kt

@@ -0,0 +1,20 @@
+package app.revanced.patcher.extensions
+
+import app.revanced.patcher.extensions.AnnotationExtensions.findAnnotationRecursively
+import app.revanced.patcher.fingerprint.method.annotation.FuzzyPatternScanMethod
+import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
+
+object MethodFingerprintExtensions {
+
+    /**
+     * The name of a [MethodFingerprint].
+     */
+    val MethodFingerprint.name: String
+        get() = this.javaClass.simpleName
+
+    /**
+     * The [FuzzyPatternScanMethod] annotation of a [MethodFingerprint].
+     */
+    val MethodFingerprint.fuzzyPatternScanMethod
+        get() = javaClass.findAnnotationRecursively(FuzzyPatternScanMethod::class)
+}

src/main/kotlin/app/revanced/patcher/extensions/PatchExtensions.kt

@@ -0,0 +1,64 @@
+package app.revanced.patcher.extensions
+
+import app.revanced.patcher.annotation.Compatibility
+import app.revanced.patcher.annotation.Description
+import app.revanced.patcher.annotation.Name
+import app.revanced.patcher.extensions.AnnotationExtensions.findAnnotationRecursively
+import app.revanced.patcher.patch.OptionsContainer
+import app.revanced.patcher.patch.Patch
+import app.revanced.patcher.patch.PatchClass
+import app.revanced.patcher.patch.PatchOptions
+import app.revanced.patcher.patch.annotations.DependsOn
+import app.revanced.patcher.patch.annotations.RequiresIntegrations
+import kotlin.reflect.KVisibility
+import kotlin.reflect.full.companionObject
+import kotlin.reflect.full.companionObjectInstance
+
+object PatchExtensions {
+    /**
+     * The name of a [Patch].
+     */
+    val PatchClass.patchName: String
+        get() = findAnnotationRecursively(Name::class)?.name ?: this.simpleName
+
+    /**
+     * Weather or not a [Patch] should be included.
+     */
+    val PatchClass.include
+        get() = findAnnotationRecursively(app.revanced.patcher.patch.annotations.Patch::class)!!.include
+
+    /**
+     * The description of a [Patch].
+     */
+    val PatchClass.description
+        get() = findAnnotationRecursively(Description::class)?.description
+
+    /**
+     * The dependencies of a [Patch].
+     */
+    val PatchClass.dependencies
+        get() = findAnnotationRecursively(DependsOn::class)?.dependencies
+
+    /**
+     * The packages a [Patch] is compatible with.
+     */
+    val PatchClass.compatiblePackages
+        get() = findAnnotationRecursively(Compatibility::class)?.compatiblePackages
+
+    /**
+     * Weather or not a [Patch] requires integrations.
+     */
+    internal val PatchClass.requiresIntegrations
+        get() = findAnnotationRecursively(RequiresIntegrations::class) != null
+
+    /**
+     * The options of a [Patch].
+     */
+    val PatchClass.options: PatchOptions?
+        get() = kotlin.companionObject?.let { cl ->
+            if (cl.visibility != KVisibility.PUBLIC) return null
+            kotlin.companionObjectInstance?.let {
+                (it as? OptionsContainer)?.options
+            }
+        }
+}