chore(release): 1.3.2 [skip ci]

## [1.3.2](https://github.com/revanced/revanced-patcher/compare/v1.3.1...v1.3.2) (2022-06-21)

### Bug Fixes

* return resourceFile to caller ([1f75777](1f75777cf9))

.github/workflows/release.yml

@@ -0,0 +1,42 @@
+name: Release
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+      - dev
+  pull_request:
+    branches:
+      - main
+      - dev
+jobs:
+  release:
+    name: Release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - name: Setup JDK
+        uses: actions/setup-java@v2
+        with:
+          java-version: '17'
+          distribution: 'adopt'
+          cache: gradle
+      - name: Setup Node.js
+        uses: actions/setup-node@v2
+        with:
+          node-version: "lts/*"
+      - name: Make gradlew executable
+        run: chmod +x gradlew
+      - name: Build with Gradle
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: ./gradlew build
+      - name: Setup semantic-release
+        run: npm install -g semantic-release @semantic-release/git @semantic-release/changelog gradle-semantic-release-plugin -D
+      - name: Release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: npx semantic-release

.idea/git_toolbox_prj.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GitToolBoxProjectSettings">
+    <option name="commitMessageIssueKeyValidationOverride">
+      <BoolValueOverride>
+        <option name="enabled" value="true" />
+      </BoolValueOverride>
+    </option>
+    <option name="commitMessageValidationEnabledOverride">
+      <BoolValueOverride>
+        <option name="enabled" value="true" />
+      </BoolValueOverride>
+    </option>
+  </component>
+</project>

.idea/inspectionProfiles/Project_Default.xml

@@ -0,0 +1,6 @@
+<component name="InspectionProjectProfileManager">
+  <profile version="1.0">
+    <option name="myName" value="Project Default" />
+    <inspection_tool class="UnusedSymbol" enabled="false" level="WARNING" enabled_by_default="false" />
+  </profile>
+</component>

.idea/vcs.xml

@@ -1,5 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
+  <component name="CommitMessageInspectionProfile">
+    <profile version="1.0">
+      <inspection_tool class="CommitFormat" enabled="true" level="WARNING" enabled_by_default="true" />
+      <inspection_tool class="CommitNamingConvention" enabled="true" level="WARNING" enabled_by_default="true" />
+    </profile>
+  </component>
   <component name="VcsDirectoryMappings">
     <mapping directory="$PROJECT_DIR$" vcs="Git" />
   </component>

.releaserc

@@ -0,0 +1,25 @@
+{
+  "branches": [
+    "main",
+    {
+      "name": "dev",
+      "prerelease": true
+    }
+  ],
+  "plugins": [
+    "@semantic-release/commit-analyzer",
+    "@semantic-release/release-notes-generator",
+    "@semantic-release/changelog",
+    "gradle-semantic-release-plugin",
+    [
+      "@semantic-release/git",
+      {
+        "assets": [
+          "CHANGELOG.md",
+          "gradle.properties"
+        ]
+      }
+    ],
+    "@semantic-release/github"
+  ]
+}

CHANGELOG.md

@@ -0,0 +1,482 @@
+## [1.3.2](https://github.com/revanced/revanced-patcher/compare/v1.3.1...v1.3.2) (2022-06-21)
+
+
+### Bug Fixes
+
+* return resourceFile to caller ([1f75777](https://github.com/revanced/revanced-patcher/commit/1f75777cf985bf08483033ec541937d3e733347b))
+
+## [1.3.1](https://github.com/revanced/revanced-patcher/compare/v1.3.0...v1.3.1) (2022-06-21)
+
+
+### Bug Fixes
+
+* `InlineSmaliCompiler.compile` using 0 registers instead of 1 by default ([835a421](https://github.com/revanced/revanced-patcher/commit/835a421cc0588b92c2995e9d74727069d14b1750))
+
+# [1.3.0](https://github.com/revanced/revanced-patcher/compare/v1.2.9...v1.3.0) (2022-06-20)
+
+
+### Features
+
+* `parametersCount` for `InlineSmaliCompiler` instead of `parameters` ([ad6c5c8](https://github.com/revanced/revanced-patcher/commit/ad6c5c827389d10eae473dc66557a699df8c3280))
+* simplify adding instructions ([e47b67d](https://github.com/revanced/revanced-patcher/commit/e47b67d7ec521f288644afb89baf4146dc9bc87d))
+
+## [1.2.9](https://github.com/revanced/revanced-patcher/compare/v1.2.8...v1.2.9) (2022-06-20)
+
+
+### Bug Fixes
+
+* update apktool ([ab866bb](https://github.com/revanced/revanced-patcher/commit/ab866bb8ef4792d8f2a51edc79e687b5b636c621))
+
+## [1.2.8](https://github.com/revanced/revanced-patcher/compare/v1.2.7...v1.2.8) (2022-06-18)
+
+
+### Bug Fixes
+
+* update apktool ([051afd9](https://github.com/revanced/revanced-patcher/commit/051afd98d065f71556392139d77c20b4c2dc7dd1))
+
+## [1.2.7](https://github.com/revanced/revanced-patcher/compare/v1.2.6...v1.2.7) (2022-06-18)
+
+
+### Bug Fixes
+
+* version not working with apktool due to cache ([03f5ee0](https://github.com/revanced/revanced-patcher/commit/03f5ee088b1b96b88cb7aeb323443b6209a13950))
+
+## [1.2.6](https://github.com/revanced/revanced-patcher/compare/v1.2.5...v1.2.6) (2022-06-18)
+
+
+### Bug Fixes
+
+* remove javadoc jar (also trigger release) ([56f6ca3](https://github.com/revanced/revanced-patcher/commit/56f6ca38919b522c0d5558eabffa4aee41cc0b0b))
+
+## [1.2.5](https://github.com/revanced/revanced-patcher/compare/v1.2.4...v1.2.5) (2022-06-17)
+
+
+### Bug Fixes
+
+* goodbye security ([8f3ac77](https://github.com/revanced/revanced-patcher/commit/8f3ac7702a2b3ee98c55aeac6a1b9972f99664cc))
+
+## [1.2.4](https://github.com/revanced/revanced-patcher/compare/v1.2.3...v1.2.4) (2022-06-15)
+
+
+### Reverts
+
+* "fix: enforce aapt v1" ([dfd8a24](https://github.com/revanced/revanced-patcher/commit/dfd8a245124f85b1b028bbba197c70c8dca689b6))
+
+## [1.2.3](https://github.com/revanced/revanced-patcher/compare/v1.2.2...v1.2.3) (2022-06-14)
+
+
+### Bug Fixes
+
+* enforce aapt v1 ([cff87ff](https://github.com/revanced/revanced-patcher/commit/cff87ff0770d774d7ef79eec5a22462eadbcb9c5))
+
+## [1.2.2](https://github.com/revanced/revanced-patcher/compare/v1.2.1...v1.2.2) (2022-06-14)
+
+
+### Bug Fixes
+
+* enforce aapt v2 ([b68b0bf](https://github.com/revanced/revanced-patcher/commit/b68b0bf3d735f54b92ad7dad8132f77e9007063f))
+
+## [1.2.1](https://github.com/revanced/revanced-patcher/compare/v1.2.0...v1.2.1) (2022-06-14)
+
+
+### Bug Fixes
+
+* Patcher setting BuildOptions too late ([6a5c873](https://github.com/revanced/revanced-patcher/commit/6a5c8735fb8a5d6f7e9c606734b6684c7fa99e7f))
+
+# [1.2.0](https://github.com/revanced/revanced-patcher/compare/v1.1.0...v1.2.0) (2022-06-14)
+
+
+### Features
+
+* allow custom framework path to be specified ([d3a580e](https://github.com/revanced/revanced-patcher/commit/d3a580ea19d7c2d5d8c97650b1e6396ea0a7fc25))
+
+# [1.1.0](https://github.com/revanced/revanced-patcher/compare/v1.0.0...v1.1.0) (2022-06-11)
+
+
+### Bug Fixes
+
+* resource patcher ([31815ca](https://github.com/revanced/revanced-patcher/commit/31815ca9ea990f16b3600d61fd570c1805be1c82))
+* update apktool to fork ([566ecef](https://github.com/revanced/revanced-patcher/commit/566ecefa2bd4cde5ebfb2b22dc56cd8bf9f396bd))
+
+
+### Features
+
+* allow custom aapt path to be specified ([8eb4a8f](https://github.com/revanced/revanced-patcher/commit/8eb4a8f87ae7679a272f3224273a37a31d4bb121))
+
+# 1.0.0 (2022-06-05)
+
+
+### Bug Fixes
+
+* `compareSignatureToMethod` not matching correctly in case opcodes are null ([cca12aa](https://github.com/revanced/revanced-patcher/commit/cca12aa34a60d766c02e55241df847f7d230d4d7))
+* `ConcurrentModificationException` while iterating through `proxies` and modifying it ([6cb7cdb](https://github.com/revanced/revanced-patcher/commit/6cb7cdb0b2a2b954adb04033e0f2d3ccb4604545))
+* `JarPatchBundle` loading non-class files to class loader ([849616d](https://github.com/revanced/revanced-patcher/commit/849616dc2b6e30ec1fa1d8a8f9c1f881fc11676a))
+* `PackageMetadata` ([7399450](https://github.com/revanced/revanced-patcher/commit/739945013962fd80d2635fff126d84046870f956))
+* `replaceWith` not replacing classes with used class proxies ([4178a1e](https://github.com/revanced/revanced-patcher/commit/4178a1eedce1436ffeb3ddd6952ce0b6ec87d5a0))
+* adding existing classes to the patchers cache ([9659a61](https://github.com/revanced/revanced-patcher/commit/9659a61c5c3a84714160b78b32cc337a97c8caa9))
+* always return PatchResultSuccess on patch success ([996c4ac](https://github.com/revanced/revanced-patcher/commit/996c4acb2061db776430ad8b07bfdb3fe32861f6))
+* applying no patches throwing error ([5ca5a1c](https://github.com/revanced/revanced-patcher/commit/5ca5a1c29e087ce7e4b6d5e593b775365803151d))
+* applyPatches not returning successful patches ([f806cb3](https://github.com/revanced/revanced-patcher/commit/f806cb38c571cdd22016396ee1874ee18c91b79f))
+* avoid ignoring test resources (fixes [#1](https://github.com/revanced/revanced-patcher/issues/1)) ([d5a3c76](https://github.com/revanced/revanced-patcher/commit/d5a3c76389ba902c22ddc8b7ba1a110b7ff852df))
+* Classes not being written properly because of array shifting ([6e4db11](https://github.com/revanced/revanced-patcher/commit/6e4db110c8fdd16fb0c0ce81f427d84f2a3b6ee0))
+* current must be calculated after increment ([5f12bab](https://github.com/revanced/revanced-patcher/commit/5f12bab5df97fbe6e2e62c1bf2814a2e682ab4f3))
+* failing tests temporarily ([fc05fe7](https://github.com/revanced/revanced-patcher/commit/fc05fe79deec2486bb746d33e803ad052e68f8de))
+* fix classes having multiple instances of fields ([7cc8a7d](https://github.com/revanced/revanced-patcher/commit/7cc8a7dec321774c1d3f2f1a87ac91f952c4fb7e))
+* fix classes having multiple method instances ([398239d](https://github.com/revanced/revanced-patcher/commit/398239dc10a3ea04e46adb3be176c897876e5587))
+* Fixed writer & signature resolver, improved tests & speed, minor refactoring ([e6c2501](https://github.com/revanced/revanced-patcher/commit/e6c2501539540301d5b70014de460e5452a09b04))
+* fuzzy resolver warning params were turned around ([e5bea06](https://github.com/revanced/revanced-patcher/commit/e5bea06353805f004d607124a8ebed138f84d583))
+* give ClassWriter a ClassReader for symtable ([41749ba](https://github.com/revanced/revanced-patcher/commit/41749ba8290b2dec5dd2ab6e0bc9d714887a1a05))
+* **gradle:** publish source and javadocs ([c236ebe](https://github.com/revanced/revanced-patcher/commit/c236ebe0789f9c78d610769f0feda2b64fa4a128))
+* incorrect pattern offset ([f3b5f67](https://github.com/revanced/revanced-patcher/commit/f3b5f67b395167c1b9411b2374f3ef584b57b6cf))
+* **Io:** fix finding classes by name ([b957501](https://github.com/revanced/revanced-patcher/commit/b957501e709028005c4d6c7857022980205b6861))
+* **Io:** JAR loading and saving ([#8](https://github.com/revanced/revanced-patcher/issues/8)) ([310a7c4](https://github.com/revanced/revanced-patcher/commit/310a7c446b547d84b02c5da2161958e77ce69f0d))
+* make `methodMetadata` nullable in `MethodSignatureMetadata` ([4e56652](https://github.com/revanced/revanced-patcher/commit/4e566524299674426fb0344d09db3b0c1cb3d300))
+* make warnings nullable instead of lateinit ([8f1a629](https://github.com/revanced/revanced-patcher/commit/8f1a629191668e05917dc797e486647e55276d59))
+* match to correct signature method parameters ([1ee2e4b](https://github.com/revanced/revanced-patcher/commit/1ee2e4ba56097c5e06c93c9ce04cb5543f0e4a67))
+* **MethodResolver:** fix cd57a8c9a0db7e3ae5ad0bca202e5955930319ab ([cbd8df2](https://github.com/revanced/revanced-patcher/commit/cbd8df2df008ef37c6b43e2a8442c41f24be9358))
+* **MethodResolver:** strip labels and line numbers so opcode patterns match ([699c730](https://github.com/revanced/revanced-patcher/commit/699c730a7cecf31878827d645e845490a37de4cb))
+* **MethodResolver:** strip labels nodes so opcode patterns match ([82c5306](https://github.com/revanced/revanced-patcher/commit/82c530650f926dd026d263cfe23a7d67cb27bbf2))
+* MethodSignature#resolved throwing an exception ([c612676](https://github.com/revanced/revanced-patcher/commit/c612676543282155143471b71a095e26023806ea))
+* Move proxy package out of cache package ([ce21bd6](https://github.com/revanced/revanced-patcher/commit/ce21bd60f34d78b94d6d85f2c5375bc934ed4091))
+* null check causing an exception ([338bd9f](https://github.com/revanced/revanced-patcher/commit/338bd9f7394afd84e5e195a7f8155c813812cfb5))
+* nullable signature members ([#10](https://github.com/revanced/revanced-patcher/issues/10)) ([674461f](https://github.com/revanced/revanced-patcher/commit/674461f08daabbf92cb54e4eadb408226fac47af))
+* Patch should have access to the Cache ([4dd820f](https://github.com/revanced/revanced-patcher/commit/4dd820ffdf1b98fe41b50f7cb2670b89acfbb99d))
+* Patcher not writing resolved methods ([fac44a5](https://github.com/revanced/revanced-patcher/commit/fac44a50c39d8c102bd3e7ca4dd1bb86d29f7b57))
+* qualifying `Element` with wrong package ([024fa86](https://github.com/revanced/revanced-patcher/commit/024fa867e115f984cfa3e395b78f4f43aa81709b))
+* reaching all constructors not possible ([c459beb](https://github.com/revanced/revanced-patcher/commit/c459beb5f898d797f2f03ed36326bd9cfad03d31))
+* reformat (trigger release) ([bf48945](https://github.com/revanced/revanced-patcher/commit/bf4894592bf9ee9c6233abc91f538b7b8ef986a0))
+* remove broken code ([0e72a6e](https://github.com/revanced/revanced-patcher/commit/0e72a6e85ff9a6035510680fc5e33ab0cd14144f))
+* remove dependency to fork of Apktool ([11abc67](https://github.com/revanced/revanced-patcher/commit/11abc67d9ab7d7b273fd4cd4c53af54008a80585))
+* remove leftover debug code ([0f30eac](https://github.com/revanced/revanced-patcher/commit/0f30eac32ce66d8b90906c02ef7e7854feeecc33))
+* return mutable set of classes ([66a9b76](https://github.com/revanced/revanced-patcher/commit/66a9b768457e98fdde0b61f9a8d6aed4c1872027))
+* returning failure on success ([48c4ea2](https://github.com/revanced/revanced-patcher/commit/48c4ea2f6d9de319383a49ea2d4c6ffb4f687a2b))
+* Search method map for existing class proxy ([a1e909b](https://github.com/revanced/revanced-patcher/commit/a1e909b16337c538f8f8b475801d8b1804163bfe))
+* set index for insertAt to 0 by default ([d5b4c99](https://github.com/revanced/revanced-patcher/commit/d5b4c99c00272e3e5afec2fa0a489ba618f2a81a))
+* set marklimit to Integer.MAX_VALUE ([e6e468f](https://github.com/revanced/revanced-patcher/commit/e6e468fbb5c20b08c8bd59bafc794acea907e4b4))
+* string signature in `SignatureResolver` ([e5ae970](https://github.com/revanced/revanced-patcher/commit/e5ae9700096924e63b15a08079dce40ae07202d8))
+* Suppress unused for addFiles ([3d6a1d3](https://github.com/revanced/revanced-patcher/commit/3d6a1d38f339ce2c5d82b7ac46c208c6702d6d44))
+* throwing in case the opcode patterns do not match ([3144ec8](https://github.com/revanced/revanced-patcher/commit/3144ec872ac8651b8c0a9311ae508d5c3cc734ce))
+* use Array instead of Iterable for methodParameters ([dfac8f0](https://github.com/revanced/revanced-patcher/commit/dfac8f03a362fd273527f552d9eae121505fd4e0))
+* using old instance of `Androlib` when saving ([a4d8be2](https://github.com/revanced/revanced-patcher/commit/a4d8be20fcd444b08ec9c43f9f7029f8bacbbc41))
+* workflow on dev branch ([428f7f4](https://github.com/revanced/revanced-patcher/commit/428f7f4decb00d28c9bf137ef4cd1d5fd4a0821e))
+* write all classes ([f068fc8](https://github.com/revanced/revanced-patcher/commit/f068fc87ff8e204826639318af39e48e683254da))
+
+
+### Code Refactoring
+
+* bump multidexlib2 to 2.5.2.r2 ([a6c6b49](https://github.com/revanced/revanced-patcher/commit/a6c6b4979af42936cb26608541a4f7a66393b3f0))
+* Change all references from Array to Iterable ([72f3cad](https://github.com/revanced/revanced-patcher/commit/72f3cad3f98001b0109b07373ed9cc57a9001cfa))
+* convert Patch to abstract class ([cb9b1b9](https://github.com/revanced/revanced-patcher/commit/cb9b1b9416c699c68d0fca228d4f8ca6fb634cb5))
+* Optimize Signature class ([#11](https://github.com/revanced/revanced-patcher/issues/11)) ([7faa001](https://github.com/revanced/revanced-patcher/commit/7faa001406c1f28dc2182cf6d1ab19504f4e3eb9))
+* Rename `net.revanced` to `app.revanced` ([7087230](https://github.com/revanced/revanced-patcher/commit/70872307e33282b37dd5fb315b56022ab73bf582))
+
+
+### Features
+
+* `Dependencies` annotation ([893d4c6](https://github.com/revanced/revanced-patcher/commit/893d4c699bad4c70002fc691c261447d01948b5c))
+* `PatchLoader` ([ec9fd15](https://github.com/revanced/revanced-patcher/commit/ec9fd15f9b9b9968be7fb5cb384eb8ee2a0c9ba3))
+* Add `findParentMethod` utility method ([#4](https://github.com/revanced/revanced-patcher/issues/4)) ([bbb2c54](https://github.com/revanced/revanced-patcher/commit/bbb2c547aae8dd774a1a883de24fe45da463fa35))
+* add `MethodWalker` ([7755bbc](https://github.com/revanced/revanced-patcher/commit/7755bbc645773e49053fb9ad2b6fd18a7f488659))
+* add `p` naming scheme to smali compiler ([79909cf](https://github.com/revanced/revanced-patcher/commit/79909cf260c0578e88ad22d63397957dbaa91702))
+* add extensions for cloning methods ([01bfbd6](https://github.com/revanced/revanced-patcher/commit/01bfbd656ee06cb2cab951c43d7f76a465a40830))
+* add findClass method with className ([4087f49](https://github.com/revanced/revanced-patcher/commit/4087f498638ee88ba3eaca792039fe481f404732))
+* Add first tests ([544bcf7](https://github.com/revanced/revanced-patcher/commit/544bcf76bd8a8c790c2f799606ad8c9ac7d2aa82))
+* add fuzzy resolver ([7a56dca](https://github.com/revanced/revanced-patcher/commit/7a56dca004cd793121a59ea854c77f4c1a01bd6f))
+* add immutableMethod ([c63b20f](https://github.com/revanced/revanced-patcher/commit/c63b20fa65aba8bb060a4a7a652747cba7198c2b))
+* add inline smali compiler ([bfe4e3e](https://github.com/revanced/revanced-patcher/commit/bfe4e3e298ac963936ca9621e12aefbe56260826))
+* add missing test for fields ([6b8b057](https://github.com/revanced/revanced-patcher/commit/6b8b0573d479e227b45dc36a6abac622c3ccebdd))
+* add or extension for AccessFlags ([00c85b5](https://github.com/revanced/revanced-patcher/commit/00c85b5d750ccc8de69ad4101220b19eeaf99bcb))
+* Add patch metadata ([642e903](https://github.com/revanced/revanced-patcher/commit/642e9031eb3727ebdca22c75b7c5c602a8775da0)), closes [ReVancedTeam/revanced-patches#1](https://github.com/ReVancedTeam/revanced-patches/issues/1)
+* add SafeClassWriter ([6626014](https://github.com/revanced/revanced-patcher/commit/6626014ef3dde2f98a53f75d71eeb0de85189bf3))
+* Add warnings for Fuzzy resolver ([715a2ad](https://github.com/revanced/revanced-patcher/commit/715a2ad025d127b5a8225ce50202a859f53c7f50))
+* allow classes to be overwritten in addFiles and resolve signatures when applyPatches is called ([1db735b](https://github.com/revanced/revanced-patcher/commit/1db735b1e2b570bdb1ddce0b9cd724c580113a84))
+* Allow unknown opcodes using `null` ([0e5f4ba](https://github.com/revanced/revanced-patcher/commit/0e5f4ba2d55288415c4d1be70ab6a8ab8c1c0d10))
+* Finish first patcher test ([0d8d19e](https://github.com/revanced/revanced-patcher/commit/0d8d19e708a47315e28e7493618568ea40f1e062))
+* Improve `SignatureResolver` ([139a23b](https://github.com/revanced/revanced-patcher/commit/139a23b7500a2d2577df47caf3fd0c5ec891a8d8))
+* migrate to `DexPatchBundle` and `JarPatchBundle` ([8615798](https://github.com/revanced/revanced-patcher/commit/8615798711185b30ce622d9d09faba21f3a92f97))
+* migrate to dexlib ([3651981](https://github.com/revanced/revanced-patcher/commit/36519811610192e299834e9d00627a94faad56a9))
+* Minor refactor and return proxy, if class has been proxied already ([4b26305](https://github.com/revanced/revanced-patcher/commit/4b26305bd57ba9e3eb3e34218ffe10d6c5a2f598))
+* optional `forStaticMethod` parameter for `InlineSmaliCompiler.compileMethodInstructions` ([41e8860](https://github.com/revanced/revanced-patcher/commit/41e88605c33d1f0d9e7f5466cac03a3b339afb82))
+* patch dependencies annotation and `PatcherOptions` ([6c65952](https://github.com/revanced/revanced-patcher/commit/6c65952d80a795a3ef4a37877123e9375025d3ae))
+* properly manage `ClassProxy` & add `ProxyBackedClassList` ([6cb1fdf](https://github.com/revanced/revanced-patcher/commit/6cb1fdf6171e1ab75b7ee28163965eacc00cc5a0))
+* remaining mutable `EncodedValue` classes ([3f97cc8](https://github.com/revanced/revanced-patcher/commit/3f97cc8e1fa10546d7069e01e5e66a537b0d6f7e))
+* string signature ([#22](https://github.com/revanced/revanced-patcher/issues/22)) ([612515a](https://github.com/revanced/revanced-patcher/commit/612515acf8539febf952f258d30aa3d4b631e3b7))
+* use annotations instead of metadata objects ([d20f7fd](https://github.com/revanced/revanced-patcher/commit/d20f7fd6e1ede6ec7baccb1500ab3fc66d78df73))
+* utility functions to get metadata of patch & sigs ([54511a4](https://github.com/revanced/revanced-patcher/commit/54511a4fc6417d7fe0c868d441e7d6b0ec9e218d))
+
+
+### Performance Improvements
+
+* check type instead of class ([c7ef264](https://github.com/revanced/revanced-patcher/commit/c7ef2644d83e1d8e84decb0631a6549d394180fc))
+* decode manifest only when not using resource patcher ([4f60bea](https://github.com/revanced/revanced-patcher/commit/4f60bea81e0bbe85dc6c3150238980292a1e52ab))
+* depend on `androlib` instead of `ApkDecoder` ([cc9416d](https://github.com/revanced/revanced-patcher/commit/cc9416dd11b66140c2882021cbe5088659d85371))
+* do not resolve empty signatures list ([b1eebc9](https://github.com/revanced/revanced-patcher/commit/b1eebc99a71269df33c37f35c1f56ea20a9d6bc0))
+* lazy-ify all mutable clones ([d18a3b6](https://github.com/revanced/revanced-patcher/commit/d18a3b6a28cae4fcb1c4986903208298ee50b083))
+* optimize indexOf call away ([9991f39](https://github.com/revanced/revanced-patcher/commit/9991f39c9a4fa22a221aab0bbf9e08ca7f967fa9))
+* use Set instead of List since there are no dupes ([e65ebd2](https://github.com/revanced/revanced-patcher/commit/e65ebd27c250b1735acf73af0f6b03274b0137f6))
+* use String List and compare instead of any lambda ([5bd416b](https://github.com/revanced/revanced-patcher/commit/5bd416b409290906a6378344f70391e8692ae27f))
+
+
+### Reverts
+
+* AccessFlag extensions not working with IDE ([0bfb92a](https://github.com/revanced/revanced-patcher/commit/0bfb92a0cbd72df5ba513264efb583e201cfcf82))
+* previous commits check for dupes in dexFile, not cache ([e810197](https://github.com/revanced/revanced-patcher/commit/e810197e2aa64534f2e8637165d884cbefbce8ae))
+
+
+### BREAKING CHANGES
+
+* arrayOf has to be changed to listOf.
+* Method signature of Patcher#save() was changed to comply with the changes of multidexlib2.
+* Removed usage of ASM library
+* Array<Int> was changed to IntArray. This breaks existing patches.
+* Package name was changed from "net.revanced" to "app.revanced"
+* Method signature of execute() was changed to include the cache, this will break existing implementations of the Patch class.
+* Patch class is now an abstract class. You must implement it. You can use anonymous implements, like done in the tests.
+
+# [1.0.0-dev.18](https://github.com/revanced/revanced-patcher/compare/v1.0.0-dev.17...v1.0.0-dev.18) (2022-06-04)
+
+
+### Features
+
+* `Dependencies` annotation ([83d608a](https://github.com/revanced/revanced-patcher/commit/83d608ac06a7d5ceb31b6e0022b501d99edb63a3))
+* optional `forStaticMethod` parameter for `InlineSmaliCompiler.compileMethodInstructions` ([28b9847](https://github.com/revanced/revanced-patcher/commit/28b98478e4e8e8f238e82f7fa2307aeb1547955d))
+
+# [1.0.0-dev.17](https://github.com/revanced/revanced-patcher/compare/v1.0.0-dev.16...v1.0.0-dev.17) (2022-05-31)
+
+
+### Features
+
+* patch dependencies annotation and `PatcherOptions` ([8442991](https://github.com/revanced/revanced-patcher/commit/84429912900872405b44804943357dda8430a550))
+
+# [1.0.0-dev.16](https://github.com/revanced/revanced-patcher/compare/v1.0.0-dev.15...v1.0.0-dev.16) (2022-05-27)
+
+
+### Bug Fixes
+
+* `JarPatchBundle` loading non-class files to class loader ([3f0c740](https://github.com/revanced/revanced-patcher/commit/3f0c740200dd91a060426638c2f8f516938b4c53))
+* remove dependency to fork of Apktool ([0fa529f](https://github.com/revanced/revanced-patcher/commit/0fa529fcdf9a7b5ea9a361b9f9f32f3f3fce009f))
+
+
+### Features
+
+* migrate to `DexPatchBundle` and `JarPatchBundle` ([7573db2](https://github.com/revanced/revanced-patcher/commit/7573db25757de89824af4f3aea167e500120eabb))
+
+# [1.0.0-dev.15](https://github.com/revanced/revanced-patcher/compare/v1.0.0-dev.14...v1.0.0-dev.15) (2022-05-25)
+
+
+### Features
+
+* utility functions to get metadata of patch & sigs ([72f16b7](https://github.com/revanced/revanced-patcher/commit/72f16b778587c28d8f8e91da502f197e7dc35d6d))
+
+# [1.0.0-dev.14](https://github.com/revanced/revanced-patcher/compare/v1.0.0-dev.13...v1.0.0-dev.14) (2022-05-24)
+
+
+### Bug Fixes
+
+* reformat (trigger release) ([45a167e](https://github.com/revanced/revanced-patcher/commit/45a167e7856da0306f796953775c7b7543d9bec0))
+
+# [1.0.0-dev.13](https://github.com/revanced/revanced-patcher/compare/v1.0.0-dev.12...v1.0.0-dev.13) (2022-05-24)
+
+
+### Performance Improvements
+
+* decode manifest only when not using resource patcher ([40b1fa4](https://github.com/revanced/revanced-patcher/commit/40b1fa43e1704ace29d3e349df2f4a8ea828c5c2))
+
+# [1.0.0-dev.12](https://github.com/revanced/revanced-patcher/compare/v1.0.0-dev.11...v1.0.0-dev.12) (2022-05-22)
+
+
+### Bug Fixes
+
+* using old instance of `Androlib` when saving ([5630e49](https://github.com/revanced/revanced-patcher/commit/5630e4966310311cdfd53e2ba128255047626adc))
+
+# [1.0.0-dev.11](https://github.com/revanced/revanced-patcher/compare/v1.0.0-dev.10...v1.0.0-dev.11) (2022-05-22)
+
+
+### Features
+
+* `PatchLoader` ([1a99eca](https://github.com/revanced/revanced-patcher/commit/1a99ecaffe5e55977655316e68b014fdeba374a1))
+* use annotations instead of metadata objects ([6726884](https://github.com/revanced/revanced-patcher/commit/6726884be5af56b6856749e73fb9f4f97559854a))
+
+# [1.0.0-dev.10](https://github.com/revanced/revanced-patcher/compare/v1.0.0-dev.9...v1.0.0-dev.10) (2022-05-07)
+
+
+### Bug Fixes
+
+* qualifying `Element` with wrong package ([4d74de4](https://github.com/revanced/revanced-patcher/commit/4d74de4061f26c0d7c17fabd849051b429d86033))
+
+# [1.0.0-dev.9](https://github.com/revanced/revanced-patcher/compare/v1.0.0-dev.8...v1.0.0-dev.9) (2022-05-07)
+
+
+### Bug Fixes
+
+* `compareSignatureToMethod` not matching correctly in case opcodes are null ([5ae5e98](https://github.com/revanced/revanced-patcher/commit/5ae5e98f1f8e174d800bcc75723e1ed965d66196))
+* `ConcurrentModificationException` while iterating through `proxies` and modifying it ([bfeeaf4](https://github.com/revanced/revanced-patcher/commit/bfeeaf443549c9a43279d83a0628c061a382beb9))
+* `PackageMetadata` ([305a817](https://github.com/revanced/revanced-patcher/commit/305a81793a9a04fe4e8969f2d3b591b0f01e3b63))
+* `replaceWith` not replacing classes with used class proxies ([f0f3403](https://github.com/revanced/revanced-patcher/commit/f0f34031dd4e618223f016f7c427d7c93ab8456a))
+* adding existing classes to the patchers cache ([4281546](https://github.com/revanced/revanced-patcher/commit/4281546f69225ee90ec4c003f4313df41edf71a6))
+* always return PatchResultSuccess on patch success ([866b03a](https://github.com/revanced/revanced-patcher/commit/866b03af217ad97dd2755bfdc0ffe5bcf723c949))
+* applying no patches throwing error ([f88c118](https://github.com/revanced/revanced-patcher/commit/f88c11820dbdc0d1d52a49c9bcdb4f7caa9eb6eb))
+* applyPatches not returning successful patches ([8b70bb4](https://github.com/revanced/revanced-patcher/commit/8b70bb42909434a5e59315502f6d54d7c7691f18))
+* Classes not being written properly because of array shifting ([1471956](https://github.com/revanced/revanced-patcher/commit/147195647c3990ab78ba95e4b3000650e718b713))
+* failing tests temporarily ([66b08f8](https://github.com/revanced/revanced-patcher/commit/66b08f8b3a8f31844c7e7bab4df4243521d4a431))
+* fix classes having multiple instances of fields ([b711b80](https://github.com/revanced/revanced-patcher/commit/b711b8001e4845857fa6cc71b107f1c553b31e80))
+* fix classes having multiple method instances ([12c10d8](https://github.com/revanced/revanced-patcher/commit/12c10d8c64422c4534c23467e367707e3b953f82))
+* Fixed writer & signature resolver, improved tests & speed, minor refactoring ([bb42fa3](https://github.com/revanced/revanced-patcher/commit/bb42fa3c6f59b78a7223fc70edbe598ec181ee37))
+* fuzzy resolver warning params were turned around ([d49df10](https://github.com/revanced/revanced-patcher/commit/d49df10a3ca6b472ce4a32d10cfe787ca243d47b))
+* incorrect pattern offset ([03700ff](https://github.com/revanced/revanced-patcher/commit/03700ffa519e5f20b1a0d0ffe68f3fb504351ee5))
+* make `methodMetadata` nullable in `MethodSignatureMetadata` ([864e38c](https://github.com/revanced/revanced-patcher/commit/864e38c06906a9e29271fe383d51a8ec6594a46c))
+* make warnings nullable instead of lateinit ([04b49b8](https://github.com/revanced/revanced-patcher/commit/04b49b8b664e45e64e9561eca3353ffdeda91187))
+* match to correct signature method parameters ([c49071a](https://github.com/revanced/revanced-patcher/commit/c49071aff78245f27c98a4760b361c30aa6340bc))
+* MethodSignature#resolved throwing an exception ([82b1e66](https://github.com/revanced/revanced-patcher/commit/82b1e66d54bed1e4c335e0515b7ff3ec901fa6f8))
+* Move proxy package out of cache package ([6bc4e7e](https://github.com/revanced/revanced-patcher/commit/6bc4e7eab742f5796f3041332c70495e3f993c9b))
+* null check causing an exception ([560c485](https://github.com/revanced/revanced-patcher/commit/560c485ab08b08a213b58704b11b1e2f5f625080))
+* Patcher not writing resolved methods ([d15240d](https://github.com/revanced/revanced-patcher/commit/d15240d0330a63c4b568fc5de3de861b8046cba4))
+* reaching all constructors not possible ([37fa994](https://github.com/revanced/revanced-patcher/commit/37fa9949ec84ffd277f32b1cd554e92be41d35e4))
+* remove leftover debug code ([4458141](https://github.com/revanced/revanced-patcher/commit/4458141d6d2e1b015c0d70a6e65e6c32a3cf17dc))
+* return mutable set of classes ([84bc7e0](https://github.com/revanced/revanced-patcher/commit/84bc7e0dc76f0732613383accb803f2c52da98ac))
+* returning failure on success ([3b68d5c](https://github.com/revanced/revanced-patcher/commit/3b68d5c65ec3082d1aa48525b4ee2a4163895a3b))
+* Search method map for existing class proxy ([d5e694c](https://github.com/revanced/revanced-patcher/commit/d5e694c306a47f47b8d1078b5c9f8a742445cf7e))
+* string signature in `SignatureResolver` ([ac36d19](https://github.com/revanced/revanced-patcher/commit/ac36d19693390db8f404ed30963aefb2fb7519e0))
+* Suppress unused for addFiles ([a0d6d46](https://github.com/revanced/revanced-patcher/commit/a0d6d462170552929039d71eafa813fdfde215cb))
+* throwing in case the opcode patterns do not match ([f72dd68](https://github.com/revanced/revanced-patcher/commit/f72dd68ec575ee0926ee668911ebb6f85b75f7d1))
+* use Array instead of Iterable for methodParameters ([312235b](https://github.com/revanced/revanced-patcher/commit/312235b194cac01ddc3f03ecff32c7de4e48c29c))
+* write all classes ([6ad51aa](https://github.com/revanced/revanced-patcher/commit/6ad51aad9a94d8dd5afb5e270138ef7161ccfb07))
+
+
+### Code Refactoring
+
+* bump multidexlib2 to 2.5.2.r2 ([32e6458](https://github.com/revanced/revanced-patcher/commit/32e645850d4cc74aa708984da03ae1606e696d20))
+* Change all references from Array to Iterable ([264989f](https://github.com/revanced/revanced-patcher/commit/264989f48804ed637469436acf8165ac4b7be383))
+
+
+### Features
+
+* add `MethodWalker` ([659e108](https://github.com/revanced/revanced-patcher/commit/659e1087c9e7a33e04cd7eb728c01ed946335810))
+* add `p` naming scheme to smali compiler ([38556d6](https://github.com/revanced/revanced-patcher/commit/38556d61ab192dfa84083d935ee3e9eee5450d06))
+* add extensions for cloning methods ([df7503b](https://github.com/revanced/revanced-patcher/commit/df7503b47b1e2162d6ab666f8586c633c314016f))
+* add findClass method with className ([78235d1](https://github.com/revanced/revanced-patcher/commit/78235d1abe267e6aaa086662ad69af7132b8ff74))
+* Add first tests ([6767c8f](https://github.com/revanced/revanced-patcher/commit/6767c8fbc15ea18a61db53e1472483632077f62a))
+* add fuzzy resolver ([a492808](https://github.com/revanced/revanced-patcher/commit/a4928080217451017a99cf158fd5cc9d650a5a9e))
+* add immutableMethod ([eed1cfd](https://github.com/revanced/revanced-patcher/commit/eed1cfda7b89f03f4c61ac4401707e1a12e6efb3))
+* add inline smali compiler ([dbafe2a](https://github.com/revanced/revanced-patcher/commit/dbafe2ab37b25480f3e218d94ced5af2e56cba68))
+* add missing test for fields ([4022b8b](https://github.com/revanced/revanced-patcher/commit/4022b8b847e8767ace0da3f98ad72ab61a4c242b))
+* add or extension for AccessFlags ([aec5eeb](https://github.com/revanced/revanced-patcher/commit/aec5eeb597f0e9968b43efa228c96e83175e031c))
+* Add patch metadata ([8544fc4](https://github.com/revanced/revanced-patcher/commit/8544fc4cbcb5d7c1ac0f6fcae52882a00d2bacf5)), closes [ReVancedTeam/revanced-patches#1](https://github.com/ReVancedTeam/revanced-patches/issues/1)
+* Add warnings for Fuzzy resolver ([643a14e](https://github.com/revanced/revanced-patcher/commit/643a14e664c7ff86580da683eaff9c486884ee2c))
+* allow classes to be overwritten in addFiles and resolve signatures when applyPatches is called ([5f71a34](https://github.com/revanced/revanced-patcher/commit/5f71a342ac9c6aa64a4983156f595ae0832c30e8))
+* Allow unknown opcodes using `null` ([f4a47d4](https://github.com/revanced/revanced-patcher/commit/f4a47d4dc893bb511ca2087a1a63bfc35888663f))
+* Finish first patcher test ([a9e4e8a](https://github.com/revanced/revanced-patcher/commit/a9e4e8ac3203bdd62abcd1e366f08a2269919571))
+* Improve `SignatureResolver` ([88a6a27](https://github.com/revanced/revanced-patcher/commit/88a6a2730296883e191543c2666f39f24c05d74d))
+* migrate to dexlib ([be51f42](https://github.com/revanced/revanced-patcher/commit/be51f42710c1489ef4405700e56ffecee5e6552f))
+* Minor refactor and return proxy, if class has been proxied already ([2d3c611](https://github.com/revanced/revanced-patcher/commit/2d3c61113dc9b76c43e93928ba11026fe0ad444e))
+* properly manage `ClassProxy` & add `ProxyBackedClassList` ([2319787](https://github.com/revanced/revanced-patcher/commit/23197879b20906aac7563e5f8107305edd7ccb1b))
+* remaining mutable `EncodedValue` classes ([7d38bb0](https://github.com/revanced/revanced-patcher/commit/7d38bb0baaeabade6a9e64d97e2dd6c20edd153f))
+* string signature ([#22](https://github.com/revanced/revanced-patcher/issues/22)) ([c245edb](https://github.com/revanced/revanced-patcher/commit/c245edb0c5317c1bb884ea315a1a04b720f20dd5))
+
+
+### Performance Improvements
+
+* depend on `androlib` instead of `ApkDecoder` ([e5c054a](https://github.com/revanced/revanced-patcher/commit/e5c054ac2f68b00ac123a45ed56b9f150332a82d))
+* do not resolve empty signatures list ([1f7bf3a](https://github.com/revanced/revanced-patcher/commit/1f7bf3ac6c77a71abd687f2ff6f7306a40654a1b))
+* lazy-ify all mutable clones ([05e4400](https://github.com/revanced/revanced-patcher/commit/05e44007d81399791aa1bab1eead66b7ff662043))
+* optimize indexOf call away ([f8e978a](https://github.com/revanced/revanced-patcher/commit/f8e978af888255d9c104a8275be1d9b091af3f96))
+* use Set instead of List since there are no dupes ([6221387](https://github.com/revanced/revanced-patcher/commit/622138736dca6c0161171330801b7b5666594ec7))
+* use String List and compare instead of any lambda ([aed4fd9](https://github.com/revanced/revanced-patcher/commit/aed4fd9a3c9e7f96c1e2c54b831c3fe7d3d720a2))
+
+
+### Reverts
+
+* AccessFlag extensions not working with IDE ([e161f7f](https://github.com/revanced/revanced-patcher/commit/e161f7fea449883b7ac0fb436ed4f7f2ff78af62))
+* previous commits check for dupes in dexFile, not cache ([433914f](https://github.com/revanced/revanced-patcher/commit/433914feda3066102a073d6b3bc457d0fae87911))
+
+
+### BREAKING CHANGES
+
+* arrayOf has to be changed to listOf.
+* Method signature of Patcher#save() was changed to comply with the changes of multidexlib2.
+* Removed usage of ASM library
+
+# [1.0.0-dev.8](https://github.com/ReVancedTeam/revanced-patcher/compare/v1.0.0-dev.7...v1.0.0-dev.8) (2022-03-24)
+
+
+### Performance Improvements
+
+* check type instead of class ([47eb493](https://github.com/ReVancedTeam/revanced-patcher/commit/47eb493f5425dc27a4d6e79e6b02a36ef760e8da))
+
+# [1.0.0-dev.7](https://github.com/ReVancedTeam/revanced-patcher/compare/v1.0.0-dev.6...v1.0.0-dev.7) (2022-03-24)
+
+
+### Bug Fixes
+
+* **MethodResolver:** fix cd57a8c9a0db7e3ae5ad0bca202e5955930319ab ([1af31b2](https://github.com/ReVancedTeam/revanced-patcher/commit/1af31b2aa3772a7473c04d27bf835c8eae13438d))
+
+# [1.0.0-dev.6](https://github.com/ReVancedTeam/revanced-patcher/compare/v1.0.0-dev.5...v1.0.0-dev.6) (2022-03-24)
+
+
+### Bug Fixes
+
+* **MethodResolver:** strip labels nodes so opcode patterns match ([cd57a8c](https://github.com/ReVancedTeam/revanced-patcher/commit/cd57a8c9a0db7e3ae5ad0bca202e5955930319ab))
+
+# [1.0.0-dev.5](https://github.com/ReVancedTeam/revanced-patcher/compare/v1.0.0-dev.4...v1.0.0-dev.5) (2022-03-24)
+
+
+### Bug Fixes
+
+* **MethodResolver:** strip labels and line numbers so opcode patterns match ([8d1bb5f](https://github.com/ReVancedTeam/revanced-patcher/commit/8d1bb5f3d9da544cf6e3e3848bfcc56327cde810))
+
+# [1.0.0-dev.4](https://github.com/ReVancedTeam/revanced-patcher/compare/v1.0.0-dev.3...v1.0.0-dev.4) (2022-03-23)
+
+
+### Bug Fixes
+
+* give ClassWriter a ClassReader for symtable ([e8f6973](https://github.com/ReVancedTeam/revanced-patcher/commit/e8f6973938c70002f04a86f329aa5b134f6ef649))
+
+# [1.0.0-dev.3](https://github.com/ReVancedTeam/revanced-patcher/compare/v1.0.0-dev.2...v1.0.0-dev.3) (2022-03-23)
+
+
+### Features
+
+* add SafeClassWriter ([ca6b94d](https://github.com/ReVancedTeam/revanced-patcher/commit/ca6b94d943b7067aae87a4e282cfb323811c0462))
+
+# [1.0.0-dev.2](https://github.com/ReVancedTeam/revanced-patcher/compare/v1.0.0-dev.1...v1.0.0-dev.2) (2022-03-23)
+
+
+### Bug Fixes
+
+* set marklimit to Integer.MAX_VALUE ([ab6453c](https://github.com/ReVancedTeam/revanced-patcher/commit/ab6453ca8a02af70da4468c1a63c68dde4d392ef))
+
+# 1.0.0-dev.1 (2022-03-23)
+
+
+### Bug Fixes
+
+* avoid ignoring test resources (fixes [#1](https://github.com/ReVancedTeam/revanced-patcher/issues/1)) ([d5a3c76](https://github.com/ReVancedTeam/revanced-patcher/commit/d5a3c76389ba902c22ddc8b7ba1a110b7ff852df))
+* current must be calculated after increment ([5f12bab](https://github.com/ReVancedTeam/revanced-patcher/commit/5f12bab5df97fbe6e2e62c1bf2814a2e682ab4f3))
+* **gradle:** publish source and javadocs ([87bbde5](https://github.com/ReVancedTeam/revanced-patcher/commit/87bbde5e06d038d8f6ddaac391e1db397f5a5590))
+* **Io:** fix finding classes by name ([460d62a](https://github.com/ReVancedTeam/revanced-patcher/commit/460d62a24c4cad05691c4b269c2faeda47fee3b7))
+* **Io:** JAR loading and saving ([#8](https://github.com/ReVancedTeam/revanced-patcher/issues/8)) ([4d98cbc](https://github.com/ReVancedTeam/revanced-patcher/commit/4d98cbc9e8fe1e39b3d9d4185b3c5b4882093af6))
+* nullable signature members ([#10](https://github.com/ReVancedTeam/revanced-patcher/issues/10)) ([8db8893](https://github.com/ReVancedTeam/revanced-patcher/commit/8db8893ab1bda55f11cc75db55c7c1a38f1d1b16))
+* Patch should have access to the Cache ([6c0f082](https://github.com/ReVancedTeam/revanced-patcher/commit/6c0f0823c91dc643dd80205b1e840e59827bee06))
+* remove broken code ([0e72a6e](https://github.com/ReVancedTeam/revanced-patcher/commit/0e72a6e85ff9a6035510680fc5e33ab0cd14144f))
+* set index for insertAt to 0 by default ([1769132](https://github.com/ReVancedTeam/revanced-patcher/commit/1769132a9e29cf3a0c5ae0917209c83c138c0216))
+* workflow on dev branch ([7e67daf](https://github.com/ReVancedTeam/revanced-patcher/commit/7e67daf8789c534bed0091a3975776eb95039acc))
+
+
+### Code Refactoring
+
+* convert Patch to abstract class ([23e897a](https://github.com/ReVancedTeam/revanced-patcher/commit/23e897a7a9125f4ac4266263e7dd94fe63a0bfa1))
+* Optimize Signature class ([#11](https://github.com/ReVancedTeam/revanced-patcher/issues/11)) ([49beec9](https://github.com/ReVancedTeam/revanced-patcher/commit/49beec9fc6eee6ccf52a6185761a200a6ed2b16e))
+* Rename `net.revanced` to `app.revanced` ([3ab42a9](https://github.com/ReVancedTeam/revanced-patcher/commit/3ab42a932c8d5027d554106dfe8e1299ebc1ac7f))
+
+
+### Features
+
+* Add `findParentMethod` utility method ([#4](https://github.com/ReVancedTeam/revanced-patcher/issues/4)) ([00c6ab7](https://github.com/ReVancedTeam/revanced-patcher/commit/00c6ab7fafe2a59dec0052cc5b7d1d16939076b2))
+
+
+### BREAKING CHANGES
+
+* Array<Int> was changed to IntArray. This breaks existing patches.
+* Package name was changed from "net.revanced" to "app.revanced"
+* Method signature of execute() was changed to include the cache, this will break existing implementations of the Patch class.
+* Patch class is now an abstract class. You must implement it. You can use anonymous implements, like done in the tests.

build.gradle.kts

@@ -1,42 +1,62 @@
 plugins {
-    kotlin("jvm") version "1.6.10"
+    kotlin("jvm") version "1.7.0"
+    java
     `maven-publish`
 }
 
-group = "net.revanced"
+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(kotlin("stdlib"))
-    implementation("org.ow2.asm:asm:9.2")
-    implementation("org.ow2.asm:asm-util:9.2")
-    implementation("org.ow2.asm:asm-tree:9.2")
-    implementation("org.ow2.asm:asm-commons:9.2")
-    implementation("io.github.microutils:kotlin-logging:2.1.21")
-    testImplementation("ch.qos.logback:logback-classic:1.2.11") // use your own logger!
+    implementation(kotlin("reflect"))
+
+    implementation("xpp3:xpp3:1.1.4c")
+    implementation("app.revanced:multidexlib2:2.5.2.r2")
+    implementation("org.smali:smali:2.5.2")
+
+    implementation("org.apktool:apktool-lib:2.6.5-SNAPSHOT")
+    api("org.apktool:brut.j.dir:2.6.5-SNAPSHOT")
+
     testImplementation(kotlin("test"))
 }
 
-tasks.test {
-    useJUnitPlatform()
-    testLogging {
-        events("PASSED", "SKIPPED", "FAILED")
+tasks {
+    test {
+        useJUnitPlatform()
+        testLogging {
+            events("PASSED", "SKIPPED", "FAILED")
+        }
     }
 }
 
+java {
+    withSourcesJar()
+}
+
 publishing {
     repositories {
-        maven {
-            name = "GitHubPackages"
-            url = uri("https://maven.pkg.github.com/ReVancedTeam/revanced-patcher")
-            credentials {
-                username = System.getenv("GITHUB_ACTOR")
-                password = System.getenv("GITHUB_TOKEN")
+            maven {
+                name = "GitHubPackages"
+                url = uri("https://maven.pkg.github.com/revanced/revanced-patcher")
+                credentials {
+                    username = System.getenv("GITHUB_ACTOR")
+                    password = System.getenv("GITHUB_TOKEN")
+                }
             }
-        }
     }
     publications {
         register<MavenPublication>("gpr") {

gradle.properties

@@ -1,2 +1,2 @@
-kotlin.code.style=official
-version=1.0.0
+kotlin.code.style = official
+version = 1.3.2

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.4.2-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

gradlew

@@ -1,7 +1,7 @@
-#!/usr/bin/env sh
+#!/bin/sh
 
 #
-# Copyright 2015 the original author or authors.
+# Copyright <20> 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.
@@ -17,67 +17,101 @@
 #
 
 ##############################################################################
-##
-##  Gradle start up script for UN*X
-##
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions <20>$var<61>, <20>${var}<7D>, <20>${var:-default}<7D>, <20>${var+SET}<7D>,
+#           <20>${var#prefix}<7D>, <20>${var%suffix}<7D>, and <20>$( cmd )<29>;
+#         * compound commands having a testable exit status, especially <20>case<73>;
+#         * various built-in commands including <20>command<6E>, <20>set<65>, and <20>ulimit<69>.
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       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
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
 ##############################################################################
 
 # Attempt to set APP_HOME
+
 # Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
 done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >/dev/null
-APP_HOME="`pwd -P`"
-cd "$SAVED" >/dev/null
+
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
 
 APP_NAME="Gradle"
-APP_BASE_NAME=`basename "$0"`
+APP_BASE_NAME=${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"'
 
 # Use the maximum available, or set MAX_FD != -1 to use that value.
-MAX_FD="maximum"
+MAX_FD=maximum
 
 warn () {
     echo "$*"
-}
+} >&2
 
 die () {
     echo
     echo "$*"
     echo
     exit 1
-}
+} >&2
 
 # OS specific support (must be 'true' or 'false').
 cygwin=false
 msys=false
 darwin=false
 nonstop=false
-case "`uname`" in
-  CYGWIN* )
-    cygwin=true
-    ;;
-  Darwin* )
-    darwin=true
-    ;;
-  MSYS* | MINGW* )
-    msys=true
-    ;;
-  NONSTOP* )
-    nonstop=true
-    ;;
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
 esac
 
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
@@ -87,9 +121,9 @@ CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 if [ -n "$JAVA_HOME" ] ; then
     if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
         # IBM's JDK on AIX uses strange locations for the executables
-        JAVACMD="$JAVA_HOME/jre/sh/java"
+        JAVACMD=$JAVA_HOME/jre/sh/java
     else
-        JAVACMD="$JAVA_HOME/bin/java"
+        JAVACMD=$JAVA_HOME/bin/java
     fi
     if [ ! -x "$JAVACMD" ] ; then
         die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
@@ -98,7 +132,7 @@ Please set the JAVA_HOME variable in your environment to match the
 location of your Java installation."
     fi
 else
-    JAVACMD="java"
+    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.
 
 Please set the JAVA_HOME variable in your environment to match the
@@ -106,80 +140,95 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
-    MAX_FD_LIMIT=`ulimit -H -n`
-    if [ $? -eq 0 ] ; then
-        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
-            MAX_FD="$MAX_FD_LIMIT"
-        fi
-        ulimit -n $MAX_FD
-        if [ $? -ne 0 ] ; then
-            warn "Could not set maximum file descriptor limit: $MAX_FD"
-        fi
-    else
-        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
-    fi
-fi
-
-# For Darwin, add options to specify how the application appears in the dock
-if $darwin; then
-    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
-fi
-
-# For Cygwin or MSYS, switch paths to Windows format before running java
-if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
-    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
-    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
-
-    JAVACMD=`cygpath --unix "$JAVACMD"`
-
-    # We build the pattern for arguments to be converted via cygpath
-    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
-    SEP=""
-    for dir in $ROOTDIRSRAW ; do
-        ROOTDIRS="$ROOTDIRS$SEP$dir"
-        SEP="|"
-    done
-    OURCYGPATTERN="(^($ROOTDIRS))"
-    # Add a user-defined pattern to the cygpath arguments
-    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
-        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
-    fi
-    # Now convert the arguments - kludge to limit ourselves to /bin/sh
-    i=0
-    for arg in "$@" ; do
-        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
-        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
-
-        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
-            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
-        else
-            eval `echo args$i`="\"$arg\""
-        fi
-        i=`expr $i + 1`
-    done
-    case $i in
-        0) set -- ;;
-        1) set -- "$args0" ;;
-        2) set -- "$args0" "$args1" ;;
-        3) set -- "$args0" "$args1" "$args2" ;;
-        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
-        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
-        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
-        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
-        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
-        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
     esac
 fi
 
-# Escape application args
-save () {
-    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
-    echo " "
-}
-APP_ARGS=`save "$@"`
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
 
-# Collect all arguments for the java command, following the shell quoting and substitution rules
-eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+# Collect all arguments for the java command;
+#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+#     shell script including quotes and variable substitutions, so put them in
+#     double quotes to make sure that they get re-expanded; and
+#   * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
 
 exec "$JAVACMD" "$@"

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

@@ -0,0 +1,303 @@
+package app.revanced.patcher
+
+import app.revanced.patcher.data.PackageMetadata
+import app.revanced.patcher.data.PatcherData
+import app.revanced.patcher.data.base.Data
+import app.revanced.patcher.data.implementation.findIndexed
+import app.revanced.patcher.extensions.PatchExtensions.dependencies
+import app.revanced.patcher.extensions.PatchExtensions.patchName
+import app.revanced.patcher.extensions.nullOutputStream
+import app.revanced.patcher.patch.base.Patch
+import app.revanced.patcher.patch.implementation.BytecodePatch
+import app.revanced.patcher.patch.implementation.ResourcePatch
+import app.revanced.patcher.patch.implementation.misc.PatchResult
+import app.revanced.patcher.patch.implementation.misc.PatchResultError
+import app.revanced.patcher.patch.implementation.misc.PatchResultSuccess
+import app.revanced.patcher.signature.implementation.method.resolver.MethodSignatureResolver
+import app.revanced.patcher.util.ListBackedSet
+import brut.androlib.Androlib
+import brut.androlib.meta.UsesFramework
+import brut.androlib.options.BuildOptions
+import brut.androlib.res.AndrolibResources
+import brut.androlib.res.data.ResPackage
+import brut.androlib.res.decoder.AXmlResourceParser
+import brut.androlib.res.decoder.ResAttrDecoder
+import brut.androlib.res.decoder.XmlPullStreamDecoder
+import brut.androlib.res.xml.ResXmlPatcher
+import brut.directory.ExtFile
+import lanchon.multidexlib2.BasicDexFileNamer
+import lanchon.multidexlib2.DexIO
+import lanchon.multidexlib2.MultiDexIO
+import org.jf.dexlib2.Opcodes
+import org.jf.dexlib2.iface.ClassDef
+import org.jf.dexlib2.iface.DexFile
+import org.jf.dexlib2.writer.io.MemoryDataStore
+import java.io.File
+import java.nio.file.Files
+
+val NAMER = BasicDexFileNamer()
+
+/**
+ * The ReVanced Patcher.
+ * @param options The options for the patcher.
+ */
+class Patcher(private val options: PatcherOptions) {
+    val data: PatcherData
+    private val opcodes: Opcodes
+
+    init {
+        val extInputFile = ExtFile(options.inputFile)
+        val outDir = File(options.resourceCacheDirectory)
+        if (outDir.exists()) outDir.deleteRecursively()
+        outDir.mkdirs()
+
+        val androlib = Androlib(BuildOptions().also { it.setBuildOptions(options) })
+        val resourceTable = androlib.getResTable(extInputFile, true)
+
+        val packageMetadata = PackageMetadata()
+
+        if (options.patchResources) {
+            // decode resources to cache directory
+            androlib.decodeManifestWithResources(extInputFile, outDir, resourceTable)
+            androlib.decodeResourcesFull(extInputFile, outDir, resourceTable)
+
+            // read additional metadata from the resource table
+            packageMetadata.metaInfo.usesFramework = UsesFramework().also { framework ->
+                framework.ids = resourceTable.listFramePackages().map { it.id }.sorted()
+            }
+
+            packageMetadata.metaInfo.doNotCompress = buildList {
+                androlib.recordUncompressedFiles(extInputFile, this)
+            }
+
+        } else {
+            // create decoder for the resource table
+            val decoder = ResAttrDecoder()
+            decoder.currentPackage = ResPackage(resourceTable, 0, null)
+
+            // create xml parser with the decoder
+            val axmlParser = AXmlResourceParser()
+            axmlParser.attrDecoder = decoder
+
+            // parse package information with the decoder and parser which will set required values in the resource table
+            // instead of decodeManifest another more low level solution can be created to make it faster/better
+            XmlPullStreamDecoder(
+                axmlParser, AndrolibResources().resXmlSerializer
+            ).decodeManifest(
+                extInputFile.directory.getFileInput("AndroidManifest.xml"), nullOutputStream
+            )
+        }
+
+        packageMetadata.packageName = resourceTable.currentResPackage.name
+        packageMetadata.packageVersion = resourceTable.versionInfo.versionName
+        packageMetadata.metaInfo.versionInfo = resourceTable.versionInfo
+        packageMetadata.metaInfo.sdkInfo = resourceTable.sdkInfo
+
+        // read dex files
+        val dexFile = MultiDexIO.readDexFile(true, options.inputFile, NAMER, null, null)
+        // get the opcodes
+        opcodes = dexFile.opcodes
+
+        // finally create patcher data
+        data = PatcherData(
+            dexFile.classes.toMutableList(), options.resourceCacheDirectory, packageMetadata
+        )
+    }
+
+    /**
+     * Add additional dex file container to the patcher.
+     * @param files The dex file containers to add to the patcher.
+     * @param allowedOverwrites A list of class types that are allowed to be overwritten.
+     * @param throwOnDuplicates If this is set to true, the patcher will throw an exception if a duplicate class has been found.
+     */
+    fun addFiles(
+        files: List<File>, allowedOverwrites: Iterable<String> = emptyList(), throwOnDuplicates: Boolean = false
+    ) {
+        for (file in files) {
+            for (classDef in MultiDexIO.readDexFile(true, file, NAMER, null, null).classes) {
+                val e = data.bytecodeData.classes.internalClasses.findIndexed { it.type == classDef.type }
+                if (e != null) {
+                    if (throwOnDuplicates) {
+                        throw Exception("Class ${classDef.type} has already been added to the patcher.")
+                    }
+                    val (_, idx) = e
+                    if (allowedOverwrites.contains(classDef.type)) {
+                        data.bytecodeData.classes.internalClasses[idx] = classDef
+                    }
+                    continue
+                }
+                data.bytecodeData.classes.internalClasses.add(classDef)
+            }
+        }
+    }
+
+    /**
+     * Save the patched dex file.
+     */
+    fun save(): PatcherResult {
+        val packageMetadata = data.packageMetadata
+        val metaInfo = packageMetadata.metaInfo
+        var resourceFile: ExtFile? = null
+
+        if (options.patchResources) {
+            val cacheDirectory = ExtFile(options.resourceCacheDirectory)
+
+            val androlibResources = AndrolibResources().also { resources ->
+                resources.buildOptions = BuildOptions().also { buildOptions ->
+                    buildOptions.setBuildOptions(options)
+                    buildOptions.isFramework = metaInfo.isFrameworkApk
+                    buildOptions.resourcesAreCompressed = metaInfo.compressionType
+                    buildOptions.doNotCompress = metaInfo.doNotCompress
+                }
+
+                resources.setSdkInfo(metaInfo.sdkInfo)
+                resources.setVersionInfo(metaInfo.versionInfo)
+                resources.setSharedLibrary(metaInfo.sharedLibrary)
+                resources.setSparseResources(metaInfo.sparseResources)
+            }
+
+            val manifestFile = cacheDirectory.resolve("AndroidManifest.xml")
+
+            ResXmlPatcher.fixingPublicAttrsInProviderAttributes(manifestFile)
+
+            val aaptFile = cacheDirectory.resolve("aapt_temp_file")
+
+            // delete if it exists
+            Files.deleteIfExists(aaptFile.toPath())
+
+            val resDirectory = cacheDirectory.resolve("res")
+            val includedFiles = metaInfo.usesFramework.ids.map { id ->
+                androlibResources.getFrameworkApk(
+                    id,
+                    metaInfo.usesFramework.tag
+                )
+            }.toTypedArray()
+
+            androlibResources.aaptPackage(
+                aaptFile, manifestFile, resDirectory, null,
+                null, includedFiles
+            )
+
+            resourceFile = ExtFile(aaptFile)
+        }
+
+        val newDexFile = object : DexFile {
+            override fun getClasses(): Set<ClassDef> {
+                data.bytecodeData.classes.applyProxies()
+                return ListBackedSet(data.bytecodeData.classes.internalClasses)
+            }
+
+            override fun getOpcodes(): Opcodes {
+                return this@Patcher.opcodes
+            }
+        }
+
+        // write dex modified files
+        val dexFiles = mutableMapOf<String, MemoryDataStore>()
+        MultiDexIO.writeDexFile(
+            true, -1, // core count
+            dexFiles, NAMER, newDexFile, DexIO.DEFAULT_MAX_DEX_POOL_SIZE, null
+        )
+
+        return PatcherResult(
+            dexFiles.map {
+                app.revanced.patcher.util.dex.DexFile(it.key, it.value)
+            },
+            metaInfo.doNotCompress.toList(),
+            resourceFile
+        )
+    }
+
+    /**
+     * Add [Patch]es to the patcher.
+     * @param patches [Patch]es The patches to add.
+     */
+    fun addPatches(patches: Iterable<Class<out Patch<Data>>>) {
+        data.patches.addAll(patches)
+    }
+
+    /**
+     * Apply a [patch] and its dependencies recursively.
+     * @param patch The [patch] to apply.
+     * @param appliedPatches A list of [patch] names, to prevent applying [patch]es twice.
+     * @return The result of executing the [patch].
+     */
+    private fun applyPatch(
+        patch: Class<out Patch<Data>>, appliedPatches: MutableList<String>
+    ): PatchResult {
+        val patchName = patch.patchName
+
+        // if the patch has already applied silently skip it
+        if (appliedPatches.contains(patchName)) return PatchResultSuccess()
+        appliedPatches.add(patchName)
+
+        // recursively apply all dependency patches
+        patch.dependencies?.forEach {
+            val patchDependency = it.java
+
+            val result = applyPatch(patchDependency, appliedPatches)
+            if (result.isSuccess()) return@forEach
+
+            val errorMessage = result.error()!!.message
+            return PatchResultError("$patchName depends on ${patchDependency.patchName} but the following error was raised: $errorMessage")
+        }
+
+        val patchInstance = patch.getDeclaredConstructor().newInstance()
+
+        // if the current patch is a resource patch but resource patching is disabled, return an error
+        val isResourcePatch = patchInstance is ResourcePatch
+        if (!options.patchResources && isResourcePatch) return PatchResultError("$patchName is a resource patch, but resource patching is disabled.")
+
+        // TODO: find a solution for this
+        val data = if (isResourcePatch) {
+            data.resourceData
+        } else {
+            MethodSignatureResolver(
+                data.bytecodeData.classes.internalClasses, (patchInstance as BytecodePatch).signatures
+            ).resolve(data)
+            data.bytecodeData
+        }
+
+        return try {
+            patchInstance.execute(data)
+        } catch (e: Exception) {
+            PatchResultError(e)
+        }
+    }
+
+    /**
+     * Apply patches loaded into the patcher.
+     * @param stopOnError If true, the patches will stop on the first error.
+     * @return A map of [PatchResultSuccess]. If the [Patch] was successfully applied,
+     * [PatchResultSuccess] will always be returned to the wrapping Result object.
+     * If the [Patch] failed to apply, an Exception will always be returned to the wrapping Result object.
+     */
+    fun applyPatches(
+        stopOnError: Boolean = false, callback: (String) -> Unit = {}
+    ): Map<String, Result<PatchResultSuccess>> {
+        val appliedPatches = mutableListOf<String>()
+
+        return buildMap {
+            for (patch in data.patches) {
+                val result = applyPatch(patch, appliedPatches)
+
+                val name = patch.patchName
+                callback(name)
+
+                this[name] = if (result.isSuccess()) {
+                    Result.success(result.success()!!)
+                } else {
+                    Result.failure(result.error()!!)
+                }
+
+                if (stopOnError && result.isError()) break
+            }
+        }
+    }
+}
+
+private fun BuildOptions.setBuildOptions(options: PatcherOptions) {
+    this.aaptPath = options.aaptPath
+    this.useAapt2 = true
+    this.frameworkFolderLocation = options.frameworkFolderLocation
+}

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

@@ -0,0 +1,19 @@
+package app.revanced.patcher
+
+import java.io.File
+
+/**
+ * Options for a patcher.
+ * @param inputFile The input file (usually an apk file).
+ * @param resourceCacheDirectory Directory to cache resources.
+ * @param patchResources Weather to use the resource patcher. Resources will still need to be decoded.
+ * @param aaptPath Optional path to a custom aapt binary.
+ * @param frameworkFolderLocation Optional path to a custom framework folder.
+ */
+data class PatcherOptions(
+    internal val inputFile: File,
+    internal val resourceCacheDirectory: String,
+    internal val patchResources: Boolean = false,
+    internal val aaptPath: String = "",
+    internal val frameworkFolderLocation: String? = null
+)

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

@@ -0,0 +1,15 @@
+package app.revanced.patcher
+
+import app.revanced.patcher.util.dex.DexFile
+import brut.directory.ExtFile
+
+/**
+ * The result of a patcher.
+ * @param dexFiles The patched dex files.
+ * @param doNotCompress List of relative paths to files to exclude from compressing.
+ */
+data class PatcherResult(
+    val dexFiles: List<DexFile>,
+    val doNotCompress: List<String>? = null,
+    val resourceFile: ExtFile?
+)

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

@@ -0,0 +1,28 @@
+package app.revanced.patcher.annotation
+
+import app.revanced.patcher.patch.base.Patch
+import app.revanced.patcher.signature.implementation.method.MethodSignature
+
+/**
+ * Annotation to constrain a [Patch] or [MethodSignature] to compatible packages.
+ * @param compatiblePackages A list of packages a [Patch] or [MethodSignature] is compatible with.
+ */
+@Target(AnnotationTarget.CLASS)
+@Retention(AnnotationRetention.RUNTIME)
+@MustBeDocumented
+annotation class Compatibility(
+    val compatiblePackages: Array<Package>,
+)
+
+/**
+ * Annotation to represent packages a patch can be compatible with.
+ * @param name The package identifier name.
+ * @param versions The versions of the package the [Patch] or [MethodSignature]is compatible with.
+ */
+@Target()
+@Retention(AnnotationRetention.RUNTIME)
+@MustBeDocumented
+annotation class Package(
+    val name: String,
+    val versions: Array<String>
+)

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

@@ -0,0 +1,38 @@
+package app.revanced.patcher.annotation
+
+import app.revanced.patcher.patch.base.Patch
+import app.revanced.patcher.signature.implementation.method.MethodSignature
+
+/**
+ * Annotation to name a [Patch] or [MethodSignature].
+ * @param name A suggestive name for the [Patch] or [MethodSignature].
+ */
+@Target(AnnotationTarget.CLASS)
+@Retention(AnnotationRetention.RUNTIME)
+@MustBeDocumented
+annotation class Name(
+    val name: String,
+)
+
+/**
+ * Annotation to describe a [Patch] or [MethodSignature].
+ * @param description A description for the [Patch] or [MethodSignature].
+ */
+@Target(AnnotationTarget.CLASS)
+@Retention(AnnotationRetention.RUNTIME)
+@MustBeDocumented
+annotation class Description(
+    val description: String,
+)
+
+
+/**
+ * Annotation to version a [Patch] or [MethodSignature].
+ * @param version The version of a [Patch] or [MethodSignature].
+ */
+@Target(AnnotationTarget.CLASS)
+@Retention(AnnotationRetention.RUNTIME)
+@MustBeDocumented
+annotation class Version(
+    val version: String,
+)

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

@@ -0,0 +1,13 @@
+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/PatcherData.kt

@@ -0,0 +1,20 @@
+package app.revanced.patcher.data
+
+import app.revanced.patcher.data.base.Data
+import app.revanced.patcher.data.implementation.BytecodeData
+import app.revanced.patcher.data.implementation.ResourceData
+import app.revanced.patcher.patch.base.Patch
+import org.jf.dexlib2.iface.ClassDef
+import java.io.File
+
+data class PatcherData(
+    internal val internalClasses: MutableList<ClassDef>,
+    internal val resourceCacheDirectory: String,
+    val packageMetadata: PackageMetadata
+) {
+
+    internal val patches = mutableListOf<Class<out Patch<Data>>>()
+
+    internal val bytecodeData = BytecodeData(internalClasses)
+    internal val resourceData = ResourceData(File(resourceCacheDirectory))
+}

src/main/kotlin/app/revanced/patcher/data/base/Data.kt

@@ -0,0 +1,9 @@
+package app.revanced.patcher.data.base
+
+import app.revanced.patcher.data.implementation.BytecodeData
+import app.revanced.patcher.data.implementation.ResourceData
+
+/**
+ * Constraint interface for [BytecodeData] and [ResourceData]
+ */
+interface Data

src/main/kotlin/app/revanced/patcher/data/implementation/BytecodeData.kt

@@ -0,0 +1,69 @@
+package app.revanced.patcher.data.implementation
+
+import app.revanced.patcher.data.base.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
+
+class BytecodeData(
+    internalClasses: MutableList<ClassDef>
+) : Data {
+    val classes = ProxyBackedClassList(internalClasses)
+
+    /**
+     * 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) }
+}
+
+internal class MethodNotFoundException(s: String) : Exception(s)
+
+internal inline fun <reified T> Iterable<T>.find(predicate: (T) -> Boolean): T? {
+    for (element in this) {
+        if (predicate(element)) {
+            return element
+        }
+    }
+    return null
+}
+
+/**
+ * Create a [MethodWalker] instance for the current [BytecodeData].
+ * @param startMethod The method to start at.
+ * @return A [MethodWalker] instance.
+ */
+fun BytecodeData.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
+}
+
+fun BytecodeData.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
+}

src/main/kotlin/app/revanced/patcher/data/implementation/ResourceData.kt

@@ -0,0 +1,47 @@
+package app.revanced.patcher.data.implementation
+
+import app.revanced.patcher.data.base.Data
+import org.w3c.dom.Document
+import java.io.Closeable
+import java.io.File
+import javax.xml.XMLConstants
+import javax.xml.parsers.DocumentBuilderFactory
+import javax.xml.transform.TransformerFactory
+import javax.xml.transform.dom.DOMSource
+import javax.xml.transform.stream.StreamResult
+
+class ResourceData(private val resourceCacheDirectory: File) : Data {
+    private fun resolve(path: String) = resourceCacheDirectory.resolve(path)
+
+    fun forEach(action: (File) -> Unit) = resourceCacheDirectory.walkTopDown().forEach(action)
+    fun get(path: String) = resolve(path)
+
+    fun replace(path: String, oldValue: String, newValue: String, oldValueIsRegex: Boolean = false) {
+        // TODO: buffer this somehow
+        val content = resolve(path).readText()
+
+        if (oldValueIsRegex) {
+            content.replace(Regex(oldValue), newValue)
+            return
+        }
+    }
+
+    fun getXmlEditor(path: String) = DomFileEditor(resolve(path))
+}
+
+class DomFileEditor internal constructor(private val domFile: File) : Closeable {
+    val file: Document
+
+    init {
+        val factory = DocumentBuilderFactory.newInstance()
+
+        val builder = factory.newDocumentBuilder()
+
+        // this will expectedly throw
+        file = builder.parse(domFile)
+        file.normalize()
+    }
+
+    override fun close() = TransformerFactory.newInstance().newTransformer()
+        .transform(DOMSource(file), StreamResult(domFile.outputStream()))
+}

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

@@ -0,0 +1,59 @@
+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.annotation.Version
+import app.revanced.patcher.data.base.Data
+import app.revanced.patcher.patch.base.Patch
+import app.revanced.patcher.signature.implementation.method.MethodSignature
+import app.revanced.patcher.signature.implementation.method.annotation.FuzzyPatternScanMethod
+import app.revanced.patcher.signature.implementation.method.annotation.MatchingMethod
+import kotlin.reflect.KClass
+
+/**
+ * Recursively find a given annotation on a class.
+ * @param targetAnnotation The annotation to find.
+ * @return The annotation.
+ */
+private fun <T : Annotation> Class<*>.recursiveAnnotation(targetAnnotation: KClass<T>) =
+    this.findAnnotationRecursively(targetAnnotation.java, mutableSetOf())
+
+
+private 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
+
+    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<Data>>.patchName: String
+        get() = recursiveAnnotation(Name::class)?.name ?: this.javaClass.simpleName
+    val Class<out Patch<Data>>.version get() = recursiveAnnotation(Version::class)?.version
+    val Class<out Patch<Data>>.include get() = recursiveAnnotation(app.revanced.patcher.patch.annotations.Patch::class)!!.include
+    val Class<out Patch<Data>>.description get() = recursiveAnnotation(Description::class)?.description
+    val Class<out Patch<Data>>.dependencies get() = recursiveAnnotation(app.revanced.patcher.patch.annotations.Dependencies::class)?.dependencies
+    val Class<out Patch<Data>>.compatiblePackages get() = recursiveAnnotation(Compatibility::class)?.compatiblePackages
+}
+
+object MethodSignatureExtensions {
+    val MethodSignature.name: String
+        get() = javaClass.recursiveAnnotation(Name::class)?.name ?: this.javaClass.simpleName
+    val MethodSignature.version get() = javaClass.recursiveAnnotation(Version::class)?.version ?: "0.0.1"
+    val MethodSignature.description get() = javaClass.recursiveAnnotation(Description::class)?.description
+    val MethodSignature.compatiblePackages get() = javaClass.recursiveAnnotation(Compatibility::class)?.compatiblePackages
+    val MethodSignature.matchingMethod get() = javaClass.recursiveAnnotation(MatchingMethod::class)
+    val MethodSignature.fuzzyPatternScanMethod get() = javaClass.recursiveAnnotation(FuzzyPatternScanMethod::class)
+    val MethodSignature.fuzzyThreshold get() = fuzzyPatternScanMethod?.threshold ?: 0
+}

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

@@ -0,0 +1,111 @@
+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.toInstruction
+import app.revanced.patcher.util.smali.toInstructions
+import org.jf.dexlib2.AccessFlags
+import org.jf.dexlib2.builder.BuilderInstruction
+import org.jf.dexlib2.builder.MutableMethodImplementation
+import org.jf.dexlib2.iface.Method
+import org.jf.dexlib2.iface.reference.MethodReference
+import org.jf.dexlib2.immutable.ImmutableMethod
+import org.jf.dexlib2.immutable.ImmutableMethodImplementation
+import org.jf.dexlib2.util.MethodUtil
+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])
+    }
+}
+
+/**
+ * Compare a method to another, considering constructors and parameters.
+ * @param otherMethod The method to compare against.
+ * @return True if the methods match given the conditions.
+ */
+fun Method.softCompareTo(
+    otherMethod: MethodReference
+): Boolean {
+    if (MethodUtil.isConstructor(this) && !parametersEqual(this.parameterTypes, otherMethod.parameterTypes))
+        return false
+    return this.name == otherMethod.name
+}
+
+/**
+ * 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 smali instructions to the method.
+ * @param index The index to insert the instructions at.
+ * @param instruction The smali instruction to add.
+ */
+fun MutableMethod.addInstruction(index: Int, instruction: String) =
+    this.implementation!!.addInstruction(index, instruction.toInstruction(this))
+
+/**
+ * Add smali instructions to the method.
+ * @param index The index to insert the instructions at.
+ * @param instructions The smali instructions to add.
+ */
+fun MutableMethod.addInstructions(index: Int, instructions: String) =
+    this.implementation!!.addInstructions(index, instructions.toInstructions(this))
+
+/**
+ * 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()
+
+// FIXME: also check the order of parameters as different order equals different method overload
+internal fun parametersEqual(
+    parameters1: Iterable<CharSequence>,
+    parameters2: Iterable<CharSequence>
+): Boolean {
+    return parameters1.count() == parameters2.count() && parameters1.all { parameter ->
+        parameters2.any {
+            it.startsWith(
+                parameter
+            )
+        }
+    }
+}
+
+internal val nullOutputStream: OutputStream =
+    object : OutputStream() {
+        override fun write(b: Int) {}
+    }

src/main/kotlin/app/revanced/patcher/patch/annotations/PatchAnnotation.kt

@@ -0,0 +1,24 @@
+package app.revanced.patcher.patch.annotations
+
+import app.revanced.patcher.data.base.Data
+import app.revanced.patcher.patch.base.Patch
+import kotlin.reflect.KClass
+
+/**
+ * Annotation to mark a Class as a patch.
+ * @param include If false, the patch should be treated as optional by default.
+ */
+@Target(AnnotationTarget.CLASS)
+@Retention(AnnotationRetention.RUNTIME)
+@MustBeDocumented
+annotation class Patch(val include: Boolean = true)
+
+/**
+ * Annotation for dependencies of [Patch]es .
+ */
+@Target(AnnotationTarget.CLASS)
+@Retention(AnnotationRetention.RUNTIME)
+@MustBeDocumented
+annotation class Dependencies(
+    val dependencies: Array<KClass<out Patch<Data>>> = []
+)

src/main/kotlin/app/revanced/patcher/patch/base/Patch.kt

@@ -0,0 +1,19 @@
+package app.revanced.patcher.patch.base
+
+import app.revanced.patcher.data.base.Data
+import app.revanced.patcher.patch.implementation.BytecodePatch
+import app.revanced.patcher.patch.implementation.ResourcePatch
+import app.revanced.patcher.patch.implementation.misc.PatchResult
+
+
+/**
+ * A ReVanced patch.
+ * Can either be a [ResourcePatch] or a [BytecodePatch].
+ */
+abstract class Patch<out T : Data> {
+
+    /**
+     * The main function of the [Patch] which the patcher will call.
+     */
+    abstract fun execute(data: @UnsafeVariance T): PatchResult
+}

src/main/kotlin/app/revanced/patcher/patch/implementation/BytecodePatch.kt

@@ -0,0 +1,13 @@
+package app.revanced.patcher.patch.implementation
+
+import app.revanced.patcher.data.implementation.BytecodeData
+import app.revanced.patcher.patch.base.Patch
+import app.revanced.patcher.signature.implementation.method.MethodSignature
+
+/**
+ * Bytecode patch for the Patcher.
+ * @param signatures A list of [MethodSignature] this patch relies on.
+ */
+abstract class BytecodePatch(
+    internal val signatures: Iterable<MethodSignature>
+) : Patch<BytecodeData>()

src/main/kotlin/app/revanced/patcher/patch/implementation/ResourcePatch.kt

@@ -0,0 +1,9 @@
+package app.revanced.patcher.patch.implementation
+
+import app.revanced.patcher.data.implementation.ResourceData
+import app.revanced.patcher.patch.base.Patch
+
+/**
+ * Resource patch for the Patcher.
+ */
+abstract class ResourcePatch : Patch<ResourceData>()

src/main/kotlin/app/revanced/patcher/patch/implementation/misc/PatchResult.kt

@@ -1,4 +1,4 @@
-package net.revanced.patcher.patch
+package app.revanced.patcher.patch.implementation.misc
 
 interface PatchResult {
     fun error(): PatchResultError? {
@@ -24,10 +24,12 @@ interface PatchResult {
     }
 }
 
-class PatchResultError(private val errorMessage: String) : PatchResult {
-    fun errorMessage(): String {
-        return errorMessage
-    }
+class PatchResultError(
+    errorMessage: String?, cause: Exception?
+) : Exception(errorMessage, cause), PatchResult {
+    constructor(errorMessage: String) : this(errorMessage, null)
+    constructor(cause: Exception) : this(cause.message, cause)
+
 }
 
 class PatchResultSuccess : PatchResult

src/main/kotlin/app/revanced/patcher/signature/base/Signature.kt

@@ -0,0 +1,9 @@
+package app.revanced.patcher.signature.base
+
+import app.revanced.patcher.signature.implementation.method.MethodSignature
+
+/**
+ * A ReVanced signature.
+ * Can be a [MethodSignature].
+ */
+interface Signature

src/main/kotlin/app/revanced/patcher/signature/implementation/method/MethodSignature.kt

@@ -0,0 +1,33 @@
+package app.revanced.patcher.signature.implementation.method
+
+import app.revanced.patcher.data.implementation.MethodNotFoundException
+import app.revanced.patcher.extensions.MethodSignatureExtensions.name
+import app.revanced.patcher.signature.base.Signature
+import app.revanced.patcher.signature.implementation.method.resolver.SignatureResolverResult
+import org.jf.dexlib2.Opcode
+
+/**
+ * Represents the [MethodSignature] for a method.
+ * @param returnType The return type of the method.
+ * @param accessFlags The access flags of the method.
+ * @param methodParameters The parameters of the method.
+ * @param opcodes The list of opcodes of the method.
+ * @param strings A list of strings which a method contains.
+ * A `null` opcode is equals to an unknown opcode.
+ */
+abstract class MethodSignature(
+    internal val returnType: String?,
+    internal val accessFlags: Int?,
+    internal val methodParameters: Iterable<String>?,
+    internal val opcodes: Iterable<Opcode?>?,
+    internal val strings: Iterable<String>? = null
+) : Signature {
+    /**
+     * The result of the signature
+     */
+    var result: SignatureResolverResult? = null
+        @Throws(MethodNotFoundException::class)
+        get() {
+            return field ?: throw MethodNotFoundException("Could not resolve required signature ${this.name}")
+        }
+}

src/main/kotlin/app/revanced/patcher/signature/implementation/method/annotation/MethodSignatureMetadata.kt

@@ -0,0 +1,32 @@
+package app.revanced.patcher.signature.implementation.method.annotation
+
+import app.revanced.patcher.signature.implementation.method.MethodSignature
+
+/**
+ * Annotations for a method which matches to a [MethodSignature].
+ * @param definingClass The defining class name of the method.
+ * @param name A suggestive name for the method which the [MethodSignature] was created for.
+ */
+@Target(AnnotationTarget.CLASS)
+@Retention(AnnotationRetention.RUNTIME)
+annotation class MatchingMethod(
+    val definingClass: String = "L<unspecified-class>;",
+    val name: String = "<unspecified-method>"
+)
+
+/**
+ * Annotations to scan a pattern [MethodSignature] with fuzzy algorithm.
+ * @param threshold if [threshold] or more of the opcodes do not match, skip.
+ */
+@Target(AnnotationTarget.CLASS)
+@Retention(AnnotationRetention.RUNTIME)
+annotation class FuzzyPatternScanMethod(
+    val threshold: Int = 1
+)
+
+/**
+ * Annotations to scan a pattern [MethodSignature] directly.
+ */
+@Target(AnnotationTarget.CLASS)
+@Retention(AnnotationRetention.RUNTIME)
+annotation class DirectPatternScanMethod

src/main/kotlin/app/revanced/patcher/signature/implementation/method/resolver/MethodSignatureResolver.kt

@@ -0,0 +1,162 @@
+package app.revanced.patcher.signature.implementation.method.resolver
+
+import app.revanced.patcher.data.PatcherData
+import app.revanced.patcher.data.implementation.proxy
+import app.revanced.patcher.extensions.MethodSignatureExtensions.fuzzyThreshold
+import app.revanced.patcher.extensions.parametersEqual
+import app.revanced.patcher.signature.implementation.method.MethodSignature
+import org.jf.dexlib2.Opcode
+import org.jf.dexlib2.iface.ClassDef
+import org.jf.dexlib2.iface.Method
+import org.jf.dexlib2.iface.instruction.Instruction
+import org.jf.dexlib2.iface.instruction.formats.Instruction21c
+import org.jf.dexlib2.iface.reference.StringReference
+
+internal class MethodSignatureResolver(
+    private val classes: List<ClassDef>,
+    private val methodSignatures: Iterable<MethodSignature>
+) {
+    fun resolve(patcherData: PatcherData) {
+        for (signature in methodSignatures) {
+            for (classDef in classes) {
+                for (method in classDef.methods) {
+                    val patternScanData = compareSignatureToMethod(signature, method) ?: continue
+
+                    // create class proxy, in case a patch needs mutability
+                    val classProxy = patcherData.bytecodeData.proxy(classDef)
+                    signature.result = SignatureResolverResult(
+                        classProxy,
+                        patternScanData,
+                        method,
+                    )
+                }
+            }
+        }
+    }
+
+    // These functions do not require the constructor values, so they can be static.
+    companion object {
+        fun resolveFromProxy(
+            classProxy: app.revanced.patcher.util.proxy.ClassProxy,
+            signature: MethodSignature
+        ): SignatureResolverResult? {
+            for (method in classProxy.immutableClass.methods) {
+                val result = compareSignatureToMethod(signature, method) ?: continue
+                return SignatureResolverResult(
+                    classProxy,
+                    result,
+                    method,
+                )
+            }
+            return null
+        }
+
+        private fun compareSignatureToMethod(
+            signature: MethodSignature,
+            method: Method
+        ): PatternScanResult? {
+            signature.returnType?.let {
+                if (!method.returnType.startsWith(signature.returnType)) {
+                    return null
+                }
+            }
+
+            signature.accessFlags?.let {
+                if (signature.accessFlags != method.accessFlags) {
+                    return null
+                }
+            }
+
+            signature.methodParameters?.let {
+                if (!parametersEqual(signature.methodParameters, method.parameterTypes)) {
+                    return null
+                }
+            }
+
+            signature.strings?.let { strings ->
+                method.implementation ?: return null
+
+                val stringsList = strings.toMutableList()
+
+                for (instruction in method.implementation!!.instructions) {
+                    if (instruction.opcode != Opcode.CONST_STRING) continue
+
+                    val string = ((instruction as Instruction21c).reference as StringReference).string
+                    val i = stringsList.indexOfFirst { it == string }
+                    if (i != -1) stringsList.removeAt(i)
+                }
+
+                if (stringsList.isNotEmpty()) return null
+            }
+
+            return if (signature.opcodes == null) {
+                PatternScanResult(0, 0)
+            } else {
+                method.implementation?.instructions?.let {
+                    compareOpcodes(signature, it)
+                }
+            }
+        }
+
+        private fun compareOpcodes(
+            signature: MethodSignature,
+            instructions: Iterable<Instruction>
+        ): PatternScanResult? {
+            val count = instructions.count()
+            val pattern = signature.opcodes!!
+            val size = pattern.count()
+
+            val threshold = signature.fuzzyThreshold
+
+            for (instructionIndex in 0 until count) {
+                var patternIndex = 0
+                var currentThreshold = threshold
+                while (instructionIndex + patternIndex < count) {
+                    val originalOpcode = instructions.elementAt(instructionIndex + patternIndex).opcode
+                    val patternOpcode = pattern.elementAt(patternIndex)
+                    if (
+                        patternOpcode != null && // unknown opcode
+                        originalOpcode != patternOpcode &&
+                        currentThreshold-- == 0
+                    ) break
+                    if (++patternIndex < size) continue
+                    patternIndex-- // fix pattern offset
+
+                    val result = PatternScanResult(instructionIndex, instructionIndex + patternIndex)
+
+                    result.warnings = generateWarnings(signature, instructions, result)
+
+                    return result
+                }
+            }
+
+            return null
+        }
+
+        private fun generateWarnings(
+            signature: MethodSignature,
+            instructions: Iterable<Instruction>,
+            scanResult: PatternScanResult,
+        ) = buildList {
+            val pattern = signature.opcodes!!
+            for ((patternIndex, instructionIndex) in (scanResult.startIndex until scanResult.endIndex).withIndex()) {
+                val correctOpcode = instructions.elementAt(instructionIndex).opcode
+                val patternOpcode = pattern.elementAt(patternIndex)
+                if (
+                    patternOpcode != null && // unknown opcode
+                    correctOpcode != patternOpcode
+                ) {
+                    this.add(
+                        PatternScanResult.Warning(
+                            correctOpcode, patternOpcode,
+                            instructionIndex, patternIndex,
+                        )
+                    )
+                }
+            }
+        }
+    }
+}
+
+private operator fun ClassDef.component1() = this
+private operator fun ClassDef.component2() = this.methods

src/main/kotlin/app/revanced/patcher/signature/implementation/method/resolver/MethodSignatureResolverResult.kt

@@ -0,0 +1,75 @@
+package app.revanced.patcher.signature.implementation.method.resolver
+
+import app.revanced.patcher.extensions.softCompareTo
+import app.revanced.patcher.signature.implementation.method.MethodSignature
+import app.revanced.patcher.util.proxy.ClassProxy
+import org.jf.dexlib2.Opcode
+import org.jf.dexlib2.iface.Method
+
+/**
+ * Represents the result of a [MethodSignatureResolver].
+ * @param definingClassProxy The [ClassProxy] that the matching method was found in.
+ * @param resolvedMethod The actual matching method.
+ * @param scanResult Opcodes pattern scan result.
+ */
+data class SignatureResolverResult(
+    val definingClassProxy: ClassProxy,
+    val scanResult: PatternScanResult,
+    private val resolvedMethod: Method,
+) {
+    /**
+     * Returns the **mutable** method by the [resolvedMethod] from the [definingClassProxy].
+     *
+     * Please note, this method allocates a [ClassProxy].
+     * Use [immutableMethod] where possible.
+     */
+    val method
+        get() = definingClassProxy.resolve().methods.first {
+            it.softCompareTo(resolvedMethod)
+        }
+
+    /**
+     * Returns the **immutable** method by the [resolvedMethod] from the [definingClassProxy].
+     *
+     * If you need to modify the method, use [method] instead.
+     */
+    @Suppress("MemberVisibilityCanBePrivate")
+    val immutableMethod: Method
+        get() = definingClassProxy.immutableClass.methods.first {
+            it.softCompareTo(resolvedMethod)
+        }
+
+    fun findParentMethod(signature: MethodSignature): SignatureResolverResult? {
+        return MethodSignatureResolver.resolveFromProxy(definingClassProxy, signature)
+    }
+}
+
+data class PatternScanResult(
+    val startIndex: Int,
+    val endIndex: Int
+) {
+    /**
+     * A list of warnings the resolver found.
+     *
+     * This list will be allocated when the signature has been found.
+     * Meaning, if the signature was not found,
+     * or the signature was not yet resolved,
+     * the list will be null.
+     */
+    var warnings: List<Warning>? = null
+
+    /**
+     * Represents a resolver warning.
+     * @param correctOpcode The opcode the instruction list has.
+     * @param wrongOpcode The opcode the pattern list of the signature currently has.
+     * @param instructionIndex The index of the opcode relative to the instruction list.
+     * @param patternIndex The index of the opcode relative to the pattern list from the signature.
+     */
+    data class Warning(
+        val correctOpcode: Opcode,
+        val wrongOpcode: Opcode,
+        val instructionIndex: Int,
+        val patternIndex: Int,
+    )
+}
+

src/main/kotlin/app/revanced/patcher/util/ListBackedSet.kt

@@ -0,0 +1,15 @@
+package app.revanced.patcher.util
+
+internal class ListBackedSet<E>(private val list: MutableList<E>) : MutableSet<E> {
+    override val size get() = list.size
+    override fun add(element: E) = list.add(element)
+    override fun addAll(elements: Collection<E>) = list.addAll(elements)
+    override fun clear() = list.clear()
+    override fun iterator() = list.listIterator()
+    override fun remove(element: E) = list.remove(element)
+    override fun removeAll(elements: Collection<E>) = list.removeAll(elements)
+    override fun retainAll(elements: Collection<E>) = list.retainAll(elements)
+    override fun contains(element: E) = list.contains(element)
+    override fun containsAll(elements: Collection<E>) = list.containsAll(elements)
+    override fun isEmpty() = list.isEmpty()
+}

src/main/kotlin/app/revanced/patcher/util/ProxyBackedClassList.kt

@@ -0,0 +1,42 @@
+package app.revanced.patcher.util
+
+import app.revanced.patcher.util.proxy.ClassProxy
+import org.jf.dexlib2.iface.ClassDef
+
+class ProxyBackedClassList(internal val internalClasses: MutableList<ClassDef>) : List<ClassDef> {
+    private val internalProxies = mutableListOf<ClassProxy>()
+    internal val proxies: List<ClassProxy> = internalProxies
+
+    fun add(classDef: ClassDef) = internalClasses.add(classDef)
+    fun add(classProxy: ClassProxy) = internalProxies.add(classProxy)
+
+    /**
+     * Apply all resolved classes into [internalClasses] and clean the [proxies] list.
+     */
+    internal fun applyProxies() {
+        // FIXME: check if this could cause issues when multiple patches use the same proxy
+        internalProxies.removeIf { proxy ->
+            // if the proxy is unused, keep it in the list
+            if (!proxy.proxyUsed) return@removeIf false
+
+            // if it has been used, replace the internal class which it proxied
+            val index = internalClasses.indexOfFirst { it.type == proxy.immutableClass.type }
+            internalClasses[index] = proxy.mutatedClass
+
+            // return true to remove it from the proxies list
+            return@removeIf true
+        }
+    }
+
+    override val size get() = internalClasses.size
+    override fun contains(element: ClassDef) = internalClasses.contains(element)
+    override fun containsAll(elements: Collection<ClassDef>) = internalClasses.containsAll(elements)
+    override fun get(index: Int) = internalClasses[index]
+    override fun indexOf(element: ClassDef) = internalClasses.indexOf(element)
+    override fun isEmpty() = internalClasses.isEmpty()
+    override fun iterator() = internalClasses.iterator()
+    override fun lastIndexOf(element: ClassDef) = internalClasses.lastIndexOf(element)
+    override fun listIterator() = internalClasses.listIterator()
+    override fun listIterator(index: Int) = internalClasses.listIterator(index)
+    override fun subList(fromIndex: Int, toIndex: Int) = internalClasses.subList(fromIndex, toIndex)
+}

src/main/kotlin/app/revanced/patcher/util/dex/DexFile.kt

@@ -0,0 +1,10 @@
+package app.revanced.patcher.util.dex
+
+import org.jf.dexlib2.writer.io.MemoryDataStore
+
+/**
+ * Wrapper for dex files.
+ * @param name The original name of the dex file
+ * @param memoryDataStore The data store for the dex file.
+ */
+data class DexFile(val name: String, val memoryDataStore: MemoryDataStore)

src/main/kotlin/app/revanced/patcher/util/method/MethodWalker.kt

@@ -0,0 +1,55 @@
+package app.revanced.patcher.util.method
+
+import app.revanced.patcher.data.implementation.BytecodeData
+import app.revanced.patcher.data.implementation.MethodNotFoundException
+import app.revanced.patcher.extensions.softCompareTo
+import app.revanced.patcher.util.proxy.mutableTypes.MutableMethod
+import org.jf.dexlib2.Format
+import org.jf.dexlib2.iface.Method
+import org.jf.dexlib2.iface.instruction.formats.Instruction35c
+import org.jf.dexlib2.iface.reference.MethodReference
+import org.jf.dexlib2.util.Preconditions
+
+/**
+ * Find a method from another method via instruction offsets.
+ * @param bytecodeData The bytecodeData to use when resolving the next method reference.
+ * @param currentMethod The method to start from.
+ */
+class MethodWalker internal constructor(
+    private val bytecodeData: BytecodeData,
+    private var currentMethod: Method
+) {
+    /**
+     * Get the method which was walked last.
+     * It is possible to cast this method to a [MutableMethod], if the method has been walked mutably.
+     */
+    fun getMethod(): Method {
+        return currentMethod
+    }
+
+    /**
+     * Walk to a method defined at the offset in the instruction list of the current method.
+     * @param offset The offset of the instruction. This instruction must be of format 35c.
+     * @param walkMutable If this is true, the class of the method will be resolved mutably.
+     * The current method will be mutable.
+     */
+    fun nextMethod(offset: Int, walkMutable: Boolean = false): MethodWalker {
+        currentMethod.implementation?.instructions?.let { instructions ->
+            val instruction = instructions.elementAt(offset)
+
+            Preconditions.checkFormat(instruction.opcode, Format.Format35c)
+
+            val newMethod = (instruction as Instruction35c).reference as MethodReference
+            val proxy = bytecodeData.findClass(newMethod.definingClass)!!
+
+            val methods = if (walkMutable) proxy.resolve().methods else proxy.immutableClass.methods
+            currentMethod = methods.first { it ->
+                return@first it.softCompareTo(newMethod)
+            }
+            return this
+        }
+        throw MethodNotFoundException("This method can not be walked at offset $offset inside the method ${currentMethod.name}")
+    }
+
+
+}

src/main/kotlin/app/revanced/patcher/util/patch/base/PatchBundle.kt

@@ -0,0 +1,18 @@
+package app.revanced.patcher.util.patch.base
+
+import app.revanced.patcher.data.base.Data
+import app.revanced.patcher.patch.base.Patch
+import java.io.File
+
+/**
+ * @param patchBundlePath The path to the patch bundle.
+ */
+abstract class PatchBundle(patchBundlePath: String) : File(patchBundlePath) {
+    internal fun loadPatches(classLoader: ClassLoader, classNames: Iterator<String>) = buildList {
+        classNames.forEach { className ->
+            val clazz = classLoader.loadClass(className)
+            if (!clazz.isAnnotationPresent(app.revanced.patcher.patch.annotations.Patch::class.java)) return@forEach
+            @Suppress("UNCHECKED_CAST") this.add(clazz as Class<out Patch<Data>>)
+        }
+    }
+}

src/main/kotlin/app/revanced/patcher/util/patch/implementation/DexPatchBundle.kt

@@ -0,0 +1,17 @@
+package app.revanced.patcher.util.patch.implementation
+
+import app.revanced.patcher.util.patch.base.PatchBundle
+import app.revanced.patcher.util.patch.util.StringIterator
+import org.jf.dexlib2.DexFileFactory
+
+/**
+ * A patch bundle of the ReVanced [DexPatchBundle] format.
+ * @param patchBundlePath The path to a patch bundle of dex format.
+ * @param dexClassLoader The dex class loader.
+ */
+class DexPatchBundle(patchBundlePath: String, private val dexClassLoader: ClassLoader) : PatchBundle(patchBundlePath) {
+    fun loadPatches() = loadPatches(dexClassLoader,
+        StringIterator(DexFileFactory.loadDexFile(path, null).classes.iterator()) { classDef ->
+            classDef.type.substring(1, classDef.length - 1).replace('/', '.')
+        })
+}

src/main/kotlin/app/revanced/patcher/util/patch/implementation/JarPatchBundle.kt

@@ -0,0 +1,30 @@
+package app.revanced.patcher.util.patch.implementation
+
+import app.revanced.patcher.util.patch.base.PatchBundle
+import app.revanced.patcher.util.patch.util.StringIterator
+import java.net.URLClassLoader
+import java.util.jar.JarFile
+
+/**
+ * A patch bundle of the ReVanced [JarPatchBundle] format.
+ * @param patchBundlePath The path to the patch bundle.
+ */
+class JarPatchBundle(patchBundlePath: String) : PatchBundle(patchBundlePath) {
+    fun loadPatches() = loadPatches(
+        URLClassLoader(
+            arrayOf(this.toURI().toURL()),
+            Thread.currentThread().contextClassLoader // TODO: find out why this is required
+        ),
+        StringIterator(
+            JarFile(this)
+                .entries()
+                .toList() // TODO: find a cleaner solution than that to filter non class files
+                .filter {
+                    it.name.endsWith(".class") && !it.name.contains("$")
+                }
+                .iterator()
+        ) {
+            it.realName.replace('/', '.').replace(".class", "")
+        }
+    )
+}

src/main/kotlin/app/revanced/patcher/util/patch/util/StringIterator.kt

@@ -0,0 +1,10 @@
+package app.revanced.patcher.util.patch.util
+
+internal class StringIterator<T, I : Iterator<T>>(
+    private val iterator: I,
+    private val _next: (T) -> String
+) : Iterator<String> {
+    override fun hasNext() = iterator.hasNext()
+
+    override fun next() = _next(iterator.next())
+}

src/main/kotlin/app/revanced/patcher/util/proxy/ClassProxy.kt

@@ -0,0 +1,41 @@
+package app.revanced.patcher.util.proxy
+
+import app.revanced.patcher.util.proxy.mutableTypes.MutableClass
+import org.jf.dexlib2.iface.ClassDef
+
+/**
+ * A proxy class for a [ClassDef].
+ *
+ * A class proxy simply holds a reference to the original class
+ * and allocates a mutable clone for the original class if needed.
+ * @param immutableClass The class to proxy
+ */
+class ClassProxy(
+    val immutableClass: ClassDef,
+) {
+    internal var proxyUsed = false
+    internal lateinit var mutatedClass: MutableClass
+
+    init {
+        // in the instance, that a [MutableClass] is being proxied,
+        // do not create an additional clone and reuse the [MutableClass] instance
+        if (immutableClass is MutableClass) {
+            mutatedClass = immutableClass
+            proxyUsed = true
+        }
+    }
+
+    /**
+     * Allocates and returns a mutable clone of the original class.
+     * A patch should always use the original immutable class reference
+     * to avoid unnecessary allocations for the mutable class.
+     * @return A mutable clone of the original class.
+     */
+    fun resolve(): MutableClass {
+        if (!proxyUsed) {
+            proxyUsed = true
+            mutatedClass = MutableClass(immutableClass)
+        }
+        return mutatedClass
+    }
+}

src/main/kotlin/app/revanced/patcher/util/proxy/mutableTypes/MutableAnnotation.kt

@@ -0,0 +1,29 @@
+package app.revanced.patcher.util.proxy.mutableTypes
+
+import app.revanced.patcher.util.proxy.mutableTypes.MutableAnnotationElement.Companion.toMutable
+import org.jf.dexlib2.base.BaseAnnotation
+import org.jf.dexlib2.iface.Annotation
+
+class MutableAnnotation(annotation: Annotation) : BaseAnnotation() {
+    private val visibility = annotation.visibility
+    private val type = annotation.type
+    private val _elements by lazy { annotation.elements.map { element -> element.toMutable() }.toMutableSet() }
+
+    override fun getType(): String {
+        return type
+    }
+
+    override fun getElements(): MutableSet<MutableAnnotationElement> {
+        return _elements
+    }
+
+    override fun getVisibility(): Int {
+        return visibility
+    }
+
+    companion object {
+        fun Annotation.toMutable(): MutableAnnotation {
+            return MutableAnnotation(this)
+        }
+    }
+}

src/main/kotlin/app/revanced/patcher/util/proxy/mutableTypes/MutableAnnotationElement.kt

@@ -0,0 +1,34 @@
+package app.revanced.patcher.util.proxy.mutableTypes
+
+import app.revanced.patcher.util.proxy.mutableTypes.encodedValue.MutableEncodedValue
+import app.revanced.patcher.util.proxy.mutableTypes.encodedValue.MutableEncodedValue.Companion.toMutable
+import org.jf.dexlib2.base.BaseAnnotationElement
+import org.jf.dexlib2.iface.AnnotationElement
+import org.jf.dexlib2.iface.value.EncodedValue
+
+class MutableAnnotationElement(annotationElement: AnnotationElement) : BaseAnnotationElement() {
+    private var name = annotationElement.name
+    private var value = annotationElement.value.toMutable()
+
+    fun setName(name: String) {
+        this.name = name
+    }
+
+    fun setValue(value: MutableEncodedValue) {
+        this.value = value
+    }
+
+    override fun getName(): String {
+        return name
+    }
+
+    override fun getValue(): EncodedValue {
+        return value
+    }
+
+    companion object {
+        fun AnnotationElement.toMutable(): MutableAnnotationElement {
+            return MutableAnnotationElement(this)
+        }
+    }
+}

src/main/kotlin/app/revanced/patcher/util/proxy/mutableTypes/MutableClass.kt

@@ -0,0 +1,103 @@
+package app.revanced.patcher.util.proxy.mutableTypes
+
+import app.revanced.patcher.util.proxy.mutableTypes.MutableAnnotation.Companion.toMutable
+import app.revanced.patcher.util.proxy.mutableTypes.MutableField.Companion.toMutable
+import app.revanced.patcher.util.proxy.mutableTypes.MutableMethod.Companion.toMutable
+import com.google.common.collect.Iterables
+import org.jf.dexlib2.base.reference.BaseTypeReference
+import org.jf.dexlib2.iface.ClassDef
+import org.jf.dexlib2.util.FieldUtil
+import org.jf.dexlib2.util.MethodUtil
+
+class MutableClass(classDef: ClassDef) : ClassDef, BaseTypeReference() {
+    // Class
+    private var type = classDef.type
+    private var sourceFile = classDef.sourceFile
+    private var accessFlags = classDef.accessFlags
+    private var superclass = classDef.superclass
+
+    private val _interfaces by lazy { classDef.interfaces.toMutableList() }
+    private val _annotations by lazy {
+        classDef.annotations.map { annotation -> annotation.toMutable() }.toMutableSet()
+    }
+
+    // Methods
+    private val _methods by lazy { classDef.methods.map { method -> method.toMutable() }.toMutableSet() }
+    private val _directMethods by lazy { Iterables.filter(_methods, MethodUtil.METHOD_IS_DIRECT).toMutableSet() }
+    private val _virtualMethods by lazy { Iterables.filter(_methods, MethodUtil.METHOD_IS_VIRTUAL).toMutableSet() }
+
+    // Fields
+    private val _fields by lazy { classDef.fields.map { field -> field.toMutable() }.toMutableSet() }
+    private val _staticFields by lazy { Iterables.filter(_fields, FieldUtil.FIELD_IS_STATIC).toMutableSet() }
+    private val _instanceFields by lazy { Iterables.filter(_fields, FieldUtil.FIELD_IS_INSTANCE).toMutableSet() }
+
+    fun setType(type: String) {
+        this.type = type
+    }
+
+    fun setSourceFile(sourceFile: String?) {
+        this.sourceFile = sourceFile
+    }
+
+    fun setAccessFlags(accessFlags: Int) {
+        this.accessFlags = accessFlags
+    }
+
+    fun setSuperClass(superclass: String?) {
+        this.superclass = superclass
+    }
+
+    override fun getType(): String {
+        return type
+    }
+
+    override fun getAccessFlags(): Int {
+        return accessFlags
+    }
+
+    override fun getSourceFile(): String? {
+        return sourceFile
+    }
+
+    override fun getSuperclass(): String? {
+        return superclass
+    }
+
+    override fun getInterfaces(): MutableList<String> {
+        return _interfaces
+    }
+
+    override fun getAnnotations(): MutableSet<MutableAnnotation> {
+        return _annotations
+    }
+
+    override fun getStaticFields(): MutableSet<MutableField> {
+        return _staticFields
+    }
+
+    override fun getInstanceFields(): MutableSet<MutableField> {
+        return _instanceFields
+    }
+
+    override fun getFields(): MutableSet<MutableField> {
+        return _fields
+    }
+
+    override fun getDirectMethods(): MutableSet<MutableMethod> {
+        return _directMethods
+    }
+
+    override fun getVirtualMethods(): MutableSet<MutableMethod> {
+        return _virtualMethods
+    }
+
+    override fun getMethods(): MutableSet<MutableMethod> {
+        return _methods
+    }
+
+    companion object {
+        fun ClassDef.toMutable(): MutableClass {
+            return MutableClass(this)
+        }
+    }
+}

src/main/kotlin/app/revanced/patcher/util/proxy/mutableTypes/MutableField.kt

@@ -0,0 +1,73 @@
+package app.revanced.patcher.util.proxy.mutableTypes
+
+import app.revanced.patcher.util.proxy.mutableTypes.MutableAnnotation.Companion.toMutable
+import app.revanced.patcher.util.proxy.mutableTypes.encodedValue.MutableEncodedValue
+import app.revanced.patcher.util.proxy.mutableTypes.encodedValue.MutableEncodedValue.Companion.toMutable
+import org.jf.dexlib2.HiddenApiRestriction
+import org.jf.dexlib2.base.reference.BaseFieldReference
+import org.jf.dexlib2.iface.Field
+
+class MutableField(field: Field) : Field, BaseFieldReference() {
+    private var definingClass = field.definingClass
+    private var name = field.name
+    private var type = field.type
+    private var accessFlags = field.accessFlags
+
+    private var initialValue = field.initialValue?.toMutable()
+    private val _annotations by lazy { field.annotations.map { annotation -> annotation.toMutable() }.toMutableSet() }
+    private val _hiddenApiRestrictions by lazy { field.hiddenApiRestrictions }
+
+    fun setDefiningClass(definingClass: String) {
+        this.definingClass = definingClass
+    }
+
+    fun setName(name: String) {
+        this.name = name
+    }
+
+    fun setType(type: String) {
+        this.type = type
+    }
+
+    fun setAccessFlags(accessFlags: Int) {
+        this.accessFlags = accessFlags
+    }
+
+    fun setInitialValue(initialValue: MutableEncodedValue?) {
+        this.initialValue = initialValue
+    }
+
+    override fun getDefiningClass(): String {
+        return this.definingClass
+    }
+
+    override fun getName(): String {
+        return this.name
+    }
+
+    override fun getType(): String {
+        return this.type
+    }
+
+    override fun getAnnotations(): MutableSet<MutableAnnotation> {
+        return this._annotations
+    }
+
+    override fun getAccessFlags(): Int {
+        return this.accessFlags
+    }
+
+    override fun getHiddenApiRestrictions(): MutableSet<HiddenApiRestriction> {
+        return this._hiddenApiRestrictions
+    }
+
+    override fun getInitialValue(): MutableEncodedValue? {
+        return this.initialValue
+    }
+
+    companion object {
+        fun Field.toMutable(): MutableField {
+            return MutableField(this)
+        }
+    }
+}

src/main/kotlin/app/revanced/patcher/util/proxy/mutableTypes/MutableMethod.kt

@@ -0,0 +1,64 @@
+package app.revanced.patcher.util.proxy.mutableTypes
+
+import app.revanced.patcher.util.proxy.mutableTypes.MutableAnnotation.Companion.toMutable
+import app.revanced.patcher.util.proxy.mutableTypes.MutableMethodParameter.Companion.toMutable
+import org.jf.dexlib2.HiddenApiRestriction
+import org.jf.dexlib2.base.reference.BaseMethodReference
+import org.jf.dexlib2.builder.MutableMethodImplementation
+import org.jf.dexlib2.iface.Method
+
+class MutableMethod(method: Method) : Method, BaseMethodReference() {
+    private var definingClass = method.definingClass
+    private var name = method.name
+    private var accessFlags = method.accessFlags
+    private var returnType = method.returnType
+
+    // Create own mutable MethodImplementation (due to not being able to change members like register count)
+    private val _implementation by lazy { method.implementation?.let { MutableMethodImplementation(it) } }
+    private val _annotations by lazy { method.annotations.map { annotation -> annotation.toMutable() }.toMutableSet() }
+    private val _parameters by lazy { method.parameters.map { parameter -> parameter.toMutable() }.toMutableList() }
+    private val _parameterTypes by lazy { method.parameterTypes.toMutableList() }
+    private val _hiddenApiRestrictions by lazy { method.hiddenApiRestrictions }
+
+    override fun getDefiningClass(): String {
+        return definingClass
+    }
+
+    override fun getName(): String {
+        return name
+    }
+
+    override fun getParameterTypes(): MutableList<CharSequence> {
+        return _parameterTypes
+    }
+
+    override fun getReturnType(): String {
+        return returnType
+    }
+
+    override fun getAnnotations(): MutableSet<MutableAnnotation> {
+        return _annotations
+    }
+
+    override fun getAccessFlags(): Int {
+        return accessFlags
+    }
+
+    override fun getHiddenApiRestrictions(): MutableSet<HiddenApiRestriction> {
+        return _hiddenApiRestrictions
+    }
+
+    override fun getParameters(): MutableList<MutableMethodParameter> {
+        return _parameters
+    }
+
+    override fun getImplementation(): MutableMethodImplementation? {
+        return _implementation
+    }
+
+    companion object {
+        fun Method.toMutable(): MutableMethod {
+            return MutableMethod(this)
+        }
+    }
+}

src/main/kotlin/app/revanced/patcher/util/proxy/mutableTypes/MutableMethodParameter.kt

@@ -0,0 +1,37 @@
+package app.revanced.patcher.util.proxy.mutableTypes
+
+import app.revanced.patcher.util.proxy.mutableTypes.MutableAnnotation.Companion.toMutable
+import org.jf.dexlib2.base.BaseMethodParameter
+import org.jf.dexlib2.iface.MethodParameter
+
+// TODO: finish overriding all members if necessary
+class MutableMethodParameter(parameter: MethodParameter) : MethodParameter, BaseMethodParameter() {
+    private var type = parameter.type
+    private var name = parameter.name
+    private var signature = parameter.signature
+    private val _annotations by lazy {
+        parameter.annotations.map { annotation -> annotation.toMutable() }.toMutableSet()
+    }
+
+    override fun getType(): String {
+        return type
+    }
+
+    override fun getName(): String? {
+        return name
+    }
+
+    override fun getSignature(): String? {
+        return signature
+    }
+
+    override fun getAnnotations(): MutableSet<MutableAnnotation> {
+        return _annotations
+    }
+
+    companion object {
+        fun MethodParameter.toMutable(): MutableMethodParameter {
+            return MutableMethodParameter(this)
+        }
+    }
+}

src/main/kotlin/app/revanced/patcher/util/proxy/mutableTypes/encodedValue/MutableAnnotationEncodedValue.kt

@@ -0,0 +1,33 @@
+package app.revanced.patcher.util.proxy.mutableTypes.encodedValue
+
+import app.revanced.patcher.util.proxy.mutableTypes.MutableAnnotationElement.Companion.toMutable
+import org.jf.dexlib2.base.value.BaseAnnotationEncodedValue
+import org.jf.dexlib2.iface.AnnotationElement
+import org.jf.dexlib2.iface.value.AnnotationEncodedValue
+
+class MutableAnnotationEncodedValue(annotationEncodedValue: AnnotationEncodedValue) : BaseAnnotationEncodedValue(),
+    MutableEncodedValue {
+    private var type = annotationEncodedValue.type
+
+    private val _elements by lazy {
+        annotationEncodedValue.elements.map { annotationElement -> annotationElement.toMutable() }.toMutableSet()
+    }
+
+    override fun getType(): String {
+        return this.type
+    }
+
+    fun setType(type: String) {
+        this.type = type
+    }
+
+    override fun getElements(): MutableSet<out AnnotationElement> {
+        return _elements
+    }
+
+    companion object {
+        fun AnnotationEncodedValue.toMutable(): MutableAnnotationEncodedValue {
+            return MutableAnnotationEncodedValue(this)
+        }
+    }
+}

src/main/kotlin/app/revanced/patcher/util/proxy/mutableTypes/encodedValue/MutableArrayEncodedValue.kt

@@ -0,0 +1,22 @@
+package app.revanced.patcher.util.proxy.mutableTypes.encodedValue
+
+import app.revanced.patcher.util.proxy.mutableTypes.encodedValue.MutableEncodedValue.Companion.toMutable
+import org.jf.dexlib2.base.value.BaseArrayEncodedValue
+import org.jf.dexlib2.iface.value.ArrayEncodedValue
+import org.jf.dexlib2.iface.value.EncodedValue
+
+class MutableArrayEncodedValue(arrayEncodedValue: ArrayEncodedValue) : BaseArrayEncodedValue(), MutableEncodedValue {
+    private val _value by lazy {
+        arrayEncodedValue.value.map { encodedValue -> encodedValue.toMutable() }.toMutableList()
+    }
+
+    override fun getValue(): MutableList<out EncodedValue> {
+        return _value
+    }
+
+    companion object {
+        fun ArrayEncodedValue.toMutable(): MutableArrayEncodedValue {
+            return MutableArrayEncodedValue(this)
+        }
+    }
+}

src/main/kotlin/app/revanced/patcher/util/proxy/mutableTypes/encodedValue/MutableBooleanEncodedValue.kt

@@ -0,0 +1,23 @@
+package app.revanced.patcher.util.proxy.mutableTypes.encodedValue
+
+import org.jf.dexlib2.base.value.BaseBooleanEncodedValue
+import org.jf.dexlib2.iface.value.BooleanEncodedValue
+
+class MutableBooleanEncodedValue(booleanEncodedValue: BooleanEncodedValue) : BaseBooleanEncodedValue(),
+    MutableEncodedValue {
+    private var value = booleanEncodedValue.value
+
+    override fun getValue(): Boolean {
+        return this.value
+    }
+
+    fun setValue(value: Boolean) {
+        this.value = value
+    }
+
+    companion object {
+        fun BooleanEncodedValue.toMutable(): MutableBooleanEncodedValue {
+            return MutableBooleanEncodedValue(this)
+        }
+    }
+}

src/main/kotlin/app/revanced/patcher/util/proxy/mutableTypes/encodedValue/MutableByteEncodedValue.kt

@@ -0,0 +1,22 @@
+package app.revanced.patcher.util.proxy.mutableTypes.encodedValue
+
+import org.jf.dexlib2.base.value.BaseByteEncodedValue
+import org.jf.dexlib2.iface.value.ByteEncodedValue
+
+class MutableByteEncodedValue(byteEncodedValue: ByteEncodedValue) : BaseByteEncodedValue(), MutableEncodedValue {
+    private var value = byteEncodedValue.value
+
+    override fun getValue(): Byte {
+        return this.value
+    }
+
+    fun setValue(value: Byte) {
+        this.value = value
+    }
+
+    companion object {
+        fun ByteEncodedValue.toMutable(): MutableByteEncodedValue {
+            return MutableByteEncodedValue(this)
+        }
+    }
+}

src/main/kotlin/app/revanced/patcher/util/proxy/mutableTypes/encodedValue/MutableCharEncodedValue.kt

@@ -0,0 +1,22 @@
+package app.revanced.patcher.util.proxy.mutableTypes.encodedValue
+
+import org.jf.dexlib2.base.value.BaseCharEncodedValue
+import org.jf.dexlib2.iface.value.CharEncodedValue
+
+class MutableCharEncodedValue(charEncodedValue: CharEncodedValue) : BaseCharEncodedValue(), MutableEncodedValue {
+    private var value = charEncodedValue.value
+
+    override fun getValue(): Char {
+        return this.value
+    }
+
+    fun setValue(value: Char) {
+        this.value = value
+    }
+
+    companion object {
+        fun CharEncodedValue.toMutable(): MutableCharEncodedValue {
+            return MutableCharEncodedValue(this)
+        }
+    }
+}

src/main/kotlin/app/revanced/patcher/util/proxy/mutableTypes/encodedValue/MutableDoubleEncodedValue.kt

@@ -0,0 +1,23 @@
+package app.revanced.patcher.util.proxy.mutableTypes.encodedValue
+
+import org.jf.dexlib2.base.value.BaseDoubleEncodedValue
+import org.jf.dexlib2.iface.value.DoubleEncodedValue
+
+class MutableDoubleEncodedValue(doubleEncodedValue: DoubleEncodedValue) : BaseDoubleEncodedValue(),
+    MutableEncodedValue {
+    private var value = doubleEncodedValue.value
+
+    override fun getValue(): Double {
+        return this.value
+    }
+
+    fun setValue(value: Double) {
+        this.value = value
+    }
+
+    companion object {
+        fun DoubleEncodedValue.toMutable(): MutableDoubleEncodedValue {
+            return MutableDoubleEncodedValue(this)
+        }
+    }
+}

src/main/kotlin/app/revanced/patcher/util/proxy/mutableTypes/encodedValue/MutableEncodedValue.kt

@@ -0,0 +1,32 @@
+package app.revanced.patcher.util.proxy.mutableTypes.encodedValue
+
+import org.jf.dexlib2.ValueType
+import org.jf.dexlib2.iface.value.*
+
+interface MutableEncodedValue : EncodedValue {
+    companion object {
+        fun EncodedValue.toMutable(): MutableEncodedValue {
+            return when (this.valueType) {
+                ValueType.TYPE -> MutableTypeEncodedValue(this as TypeEncodedValue)
+                ValueType.FIELD -> MutableFieldEncodedValue(this as FieldEncodedValue)
+                ValueType.METHOD -> MutableMethodEncodedValue(this as MethodEncodedValue)
+                ValueType.ENUM -> MutableEnumEncodedValue(this as EnumEncodedValue)
+                ValueType.ARRAY -> MutableArrayEncodedValue(this as ArrayEncodedValue)
+                ValueType.ANNOTATION -> MutableAnnotationEncodedValue(this as AnnotationEncodedValue)
+                ValueType.BYTE -> MutableByteEncodedValue(this as ByteEncodedValue)
+                ValueType.SHORT -> MutableShortEncodedValue(this as ShortEncodedValue)
+                ValueType.CHAR -> MutableCharEncodedValue(this as CharEncodedValue)
+                ValueType.INT -> MutableIntEncodedValue(this as IntEncodedValue)
+                ValueType.LONG -> MutableLongEncodedValue(this as LongEncodedValue)
+                ValueType.FLOAT -> MutableFloatEncodedValue(this as FloatEncodedValue)
+                ValueType.DOUBLE -> MutableDoubleEncodedValue(this as DoubleEncodedValue)
+                ValueType.METHOD_TYPE -> MutableMethodTypeEncodedValue(this as MethodTypeEncodedValue)
+                ValueType.METHOD_HANDLE -> MutableMethodHandleEncodedValue(this as MethodHandleEncodedValue)
+                ValueType.STRING -> MutableStringEncodedValue(this as StringEncodedValue)
+                ValueType.BOOLEAN -> MutableBooleanEncodedValue(this as BooleanEncodedValue)
+                ValueType.NULL -> MutableNullEncodedValue()
+                else -> this as MutableEncodedValue
+            }
+        }
+    }
+}

src/main/kotlin/app/revanced/patcher/util/proxy/mutableTypes/encodedValue/MutableEnumEncodedValue.kt

@@ -0,0 +1,23 @@
+package app.revanced.patcher.util.proxy.mutableTypes.encodedValue
+
+import org.jf.dexlib2.base.value.BaseEnumEncodedValue
+import org.jf.dexlib2.iface.reference.FieldReference
+import org.jf.dexlib2.iface.value.EnumEncodedValue
+
+class MutableEnumEncodedValue(enumEncodedValue: EnumEncodedValue) : BaseEnumEncodedValue(), MutableEncodedValue {
+    private var value = enumEncodedValue.value
+
+    override fun getValue(): FieldReference {
+        return this.value
+    }
+
+    fun setValue(value: FieldReference) {
+        this.value = value
+    }
+
+    companion object {
+        fun EnumEncodedValue.toMutable(): MutableEnumEncodedValue {
+            return MutableEnumEncodedValue(this)
+        }
+    }
+}

src/main/kotlin/app/revanced/patcher/util/proxy/mutableTypes/encodedValue/MutableFieldEncodedValue.kt

@@ -0,0 +1,28 @@
+package app.revanced.patcher.util.proxy.mutableTypes.encodedValue
+
+import org.jf.dexlib2.ValueType
+import org.jf.dexlib2.base.value.BaseFieldEncodedValue
+import org.jf.dexlib2.iface.reference.FieldReference
+import org.jf.dexlib2.iface.value.FieldEncodedValue
+
+class MutableFieldEncodedValue(fieldEncodedValue: FieldEncodedValue) : BaseFieldEncodedValue(), MutableEncodedValue {
+    private var value = fieldEncodedValue.value
+
+    override fun getValueType(): Int {
+        return ValueType.FIELD
+    }
+
+    override fun getValue(): FieldReference {
+        return this.value
+    }
+
+    fun setValue(value: FieldReference) {
+        this.value = value
+    }
+
+    companion object {
+        fun FieldEncodedValue.toMutable(): MutableFieldEncodedValue {
+            return MutableFieldEncodedValue(this)
+        }
+    }
+}

src/main/kotlin/app/revanced/patcher/util/proxy/mutableTypes/encodedValue/MutableFloatEncodedValue.kt

@@ -0,0 +1,22 @@
+package app.revanced.patcher.util.proxy.mutableTypes.encodedValue
+
+import org.jf.dexlib2.base.value.BaseFloatEncodedValue
+import org.jf.dexlib2.iface.value.FloatEncodedValue
+
+class MutableFloatEncodedValue(floatEncodedValue: FloatEncodedValue) : BaseFloatEncodedValue(), MutableEncodedValue {
+    private var value = floatEncodedValue.value
+
+    override fun getValue(): Float {
+        return this.value
+    }
+
+    fun setValue(value: Float) {
+        this.value = value
+    }
+
+    companion object {
+        fun FloatEncodedValue.toMutable(): MutableFloatEncodedValue {
+            return MutableFloatEncodedValue(this)
+        }
+    }
+}

src/main/kotlin/app/revanced/patcher/util/proxy/mutableTypes/encodedValue/MutableIntEncodedValue.kt

@@ -0,0 +1,22 @@
+package app.revanced.patcher.util.proxy.mutableTypes.encodedValue
+
+import org.jf.dexlib2.base.value.BaseIntEncodedValue
+import org.jf.dexlib2.iface.value.IntEncodedValue
+
+class MutableIntEncodedValue(intEncodedValue: IntEncodedValue) : BaseIntEncodedValue(), MutableEncodedValue {
+    private var value = intEncodedValue.value
+
+    override fun getValue(): Int {
+        return this.value
+    }
+
+    fun setValue(value: Int) {
+        this.value = value
+    }
+
+    companion object {
+        fun IntEncodedValue.toMutable(): MutableIntEncodedValue {
+            return MutableIntEncodedValue(this)
+        }
+    }
+}

src/main/kotlin/app/revanced/patcher/util/proxy/mutableTypes/encodedValue/MutableLongEncodedValue.kt

@@ -0,0 +1,22 @@
+package app.revanced.patcher.util.proxy.mutableTypes.encodedValue
+
+import org.jf.dexlib2.base.value.BaseLongEncodedValue
+import org.jf.dexlib2.iface.value.LongEncodedValue
+
+class MutableLongEncodedValue(longEncodedValue: LongEncodedValue) : BaseLongEncodedValue(), MutableEncodedValue {
+    private var value = longEncodedValue.value
+
+    override fun getValue(): Long {
+        return this.value
+    }
+
+    fun setValue(value: Long) {
+        this.value = value
+    }
+
+    companion object {
+        fun LongEncodedValue.toMutable(): MutableLongEncodedValue {
+            return MutableLongEncodedValue(this)
+        }
+    }
+}

src/main/kotlin/app/revanced/patcher/util/proxy/mutableTypes/encodedValue/MutableMethodEncodedValue.kt

@@ -0,0 +1,24 @@
+package app.revanced.patcher.util.proxy.mutableTypes.encodedValue
+
+import org.jf.dexlib2.base.value.BaseMethodEncodedValue
+import org.jf.dexlib2.iface.reference.MethodReference
+import org.jf.dexlib2.iface.value.MethodEncodedValue
+
+class MutableMethodEncodedValue(methodEncodedValue: MethodEncodedValue) : BaseMethodEncodedValue(),
+    MutableEncodedValue {
+    private var value = methodEncodedValue.value
+
+    override fun getValue(): MethodReference {
+        return this.value
+    }
+
+    fun setValue(value: MethodReference) {
+        this.value = value
+    }
+
+    companion object {
+        fun MethodEncodedValue.toMutable(): MutableMethodEncodedValue {
+            return MutableMethodEncodedValue(this)
+        }
+    }
+}

src/main/kotlin/app/revanced/patcher/util/proxy/mutableTypes/encodedValue/MutableMethodHandleEncodedValue.kt

@@ -0,0 +1,27 @@
+package app.revanced.patcher.util.proxy.mutableTypes.encodedValue
+
+import org.jf.dexlib2.base.value.BaseMethodHandleEncodedValue
+import org.jf.dexlib2.iface.reference.MethodHandleReference
+import org.jf.dexlib2.iface.value.MethodHandleEncodedValue
+
+class MutableMethodHandleEncodedValue(methodHandleEncodedValue: MethodHandleEncodedValue) :
+    BaseMethodHandleEncodedValue(),
+    MutableEncodedValue {
+    private var value = methodHandleEncodedValue.value
+
+    override fun getValue(): MethodHandleReference {
+        return this.value
+    }
+
+    fun setValue(value: MethodHandleReference) {
+        this.value = value
+    }
+
+    companion object {
+        fun MethodHandleEncodedValue.toMutable(): MutableMethodHandleEncodedValue {
+            return MutableMethodHandleEncodedValue(this)
+        }
+    }
+
+
+}

src/main/kotlin/app/revanced/patcher/util/proxy/mutableTypes/encodedValue/MutableMethodTypeEncodedValue.kt

@@ -0,0 +1,26 @@
+package app.revanced.patcher.util.proxy.mutableTypes.encodedValue
+
+import org.jf.dexlib2.base.value.BaseMethodTypeEncodedValue
+import org.jf.dexlib2.iface.reference.MethodProtoReference
+import org.jf.dexlib2.iface.value.MethodTypeEncodedValue
+
+class MutableMethodTypeEncodedValue(methodTypeEncodedValue: MethodTypeEncodedValue) : BaseMethodTypeEncodedValue(),
+    MutableEncodedValue {
+    private var value = methodTypeEncodedValue.value
+
+    override fun getValue(): MethodProtoReference {
+        return this.value
+    }
+
+    fun setValue(value: MethodProtoReference) {
+        this.value = value
+    }
+
+    companion object {
+        fun MethodTypeEncodedValue.toMutable(): MutableMethodTypeEncodedValue {
+            return MutableMethodTypeEncodedValue(this)
+        }
+    }
+
+
+}

src/main/kotlin/app/revanced/patcher/util/proxy/mutableTypes/encodedValue/MutableNullEncodedValue.kt

@@ -0,0 +1,12 @@
+package app.revanced.patcher.util.proxy.mutableTypes.encodedValue
+
+import org.jf.dexlib2.base.value.BaseNullEncodedValue
+import org.jf.dexlib2.iface.value.ByteEncodedValue
+
+class MutableNullEncodedValue : BaseNullEncodedValue(), MutableEncodedValue {
+    companion object {
+        fun ByteEncodedValue.toMutable(): MutableByteEncodedValue {
+            return MutableByteEncodedValue(this)
+        }
+    }
+}

src/main/kotlin/app/revanced/patcher/util/proxy/mutableTypes/encodedValue/MutableShortEncodedValue.kt

@@ -0,0 +1,22 @@
+package app.revanced.patcher.util.proxy.mutableTypes.encodedValue
+
+import org.jf.dexlib2.base.value.BaseShortEncodedValue
+import org.jf.dexlib2.iface.value.ShortEncodedValue
+
+class MutableShortEncodedValue(shortEncodedValue: ShortEncodedValue) : BaseShortEncodedValue(), MutableEncodedValue {
+    private var value = shortEncodedValue.value
+
+    override fun getValue(): Short {
+        return this.value
+    }
+
+    fun setValue(value: Short) {
+        this.value = value
+    }
+
+    companion object {
+        fun ShortEncodedValue.toMutable(): MutableShortEncodedValue {
+            return MutableShortEncodedValue(this)
+        }
+    }
+}

src/main/kotlin/app/revanced/patcher/util/proxy/mutableTypes/encodedValue/MutableStringEncodedValue.kt

@@ -0,0 +1,24 @@
+package app.revanced.patcher.util.proxy.mutableTypes.encodedValue
+
+import org.jf.dexlib2.base.value.BaseStringEncodedValue
+import org.jf.dexlib2.iface.value.ByteEncodedValue
+import org.jf.dexlib2.iface.value.StringEncodedValue
+
+class MutableStringEncodedValue(stringEncodedValue: StringEncodedValue) : BaseStringEncodedValue(),
+    MutableEncodedValue {
+    private var value = stringEncodedValue.value
+
+    override fun getValue(): String {
+        return this.value
+    }
+
+    fun setValue(value: String) {
+        this.value = value
+    }
+
+    companion object {
+        fun ByteEncodedValue.toMutable(): MutableByteEncodedValue {
+            return MutableByteEncodedValue(this)
+        }
+    }
+}

src/main/kotlin/app/revanced/patcher/util/proxy/mutableTypes/encodedValue/MutableTypeEncodedValue.kt

@@ -0,0 +1,22 @@
+package app.revanced.patcher.util.proxy.mutableTypes.encodedValue
+
+import org.jf.dexlib2.base.value.BaseTypeEncodedValue
+import org.jf.dexlib2.iface.value.TypeEncodedValue
+
+class MutableTypeEncodedValue(typeEncodedValue: TypeEncodedValue) : BaseTypeEncodedValue(), MutableEncodedValue {
+    private var value = typeEncodedValue.value
+
+    override fun getValue(): String {
+        return this.value
+    }
+
+    fun setValue(value: String) {
+        this.value = value
+    }
+
+    companion object {
+        fun TypeEncodedValue.toMutable(): MutableTypeEncodedValue {
+            return MutableTypeEncodedValue(this)
+        }
+    }
+}

src/main/kotlin/app/revanced/patcher/util/smali/InlineSmaliCompiler.kt

@@ -0,0 +1,77 @@
+package app.revanced.patcher.util.smali
+
+import org.antlr.runtime.CommonTokenStream
+import org.antlr.runtime.TokenSource
+import org.antlr.runtime.tree.CommonTreeNodeStream
+import org.jf.dexlib2.AccessFlags
+import org.jf.dexlib2.Opcodes
+import org.jf.dexlib2.builder.BuilderInstruction
+import org.jf.dexlib2.iface.Method
+import org.jf.dexlib2.writer.builder.DexBuilder
+import org.jf.smali.LexerErrorInterface
+import org.jf.smali.smaliFlexLexer
+import org.jf.smali.smaliParser
+import org.jf.smali.smaliTreeWalker
+import java.io.InputStreamReader
+
+private const val METHOD_TEMPLATE = """
+    .class LInlineCompiler;
+    .super Ljava/lang/Object;
+    .method %s dummyMethod(%s)V
+        .registers %d
+        %s
+    .end method
+"""
+
+class InlineSmaliCompiler {
+    companion object {
+        /**
+         * Compiles a string of Smali code to a list of instructions.
+         * p0, p1 etc. will only work correctly if the parameters and registers are passed.
+         * Do not cross the boundaries of the control flow (if-nez insn, etc),
+         * as that will result in exceptions since the labels cannot be calculated.
+         * Do not create dummy labels to fix the issue, since the code addresses will
+         * be messed up and results in broken Dalvik bytecode.
+         * FIXME: Fix the above issue. When this is fixed, add the proper conversions in [InstructionConverter].
+         */
+        fun compile(
+            instructions: String, parameters: String, registers: Int, forStaticMethod: Boolean
+        ): List<BuilderInstruction> {
+            val input =
+                METHOD_TEMPLATE.format(if (forStaticMethod) "static" else "", parameters, registers, instructions)
+            val reader = InputStreamReader(input.byteInputStream())
+            val lexer: LexerErrorInterface = smaliFlexLexer(reader, 15)
+            val tokens = CommonTokenStream(lexer as TokenSource)
+            val parser = smaliParser(tokens)
+            val result = parser.smali_file()
+            if (parser.numberOfSyntaxErrors > 0 || lexer.numberOfSyntaxErrors > 0) {
+                throw IllegalStateException(
+                    "Encountered ${parser.numberOfSyntaxErrors} parser syntax errors and ${lexer.numberOfSyntaxErrors} lexer syntax errors!"
+                )
+            }
+            val treeStream = CommonTreeNodeStream(result.tree)
+            treeStream.tokenStream = tokens
+            val dexGen = smaliTreeWalker(treeStream)
+            dexGen.setDexBuilder(DexBuilder(Opcodes.getDefault()))
+            val classDef = dexGen.smali_file()
+            return classDef.methods.first().implementation!!.instructions.map { it.toBuilderInstruction() }
+        }
+    }
+}
+
+/**
+ * Compile lines of Smali code to a list of instructions.
+ * @param templateMethod The method to compile the instructions against.
+ * @returns A list of instructions.
+ */
+fun String.toInstructions(templateMethod: Method? = null) = InlineSmaliCompiler.compile(this,
+    templateMethod?.parameters?.joinToString("") { it } ?: "",
+    templateMethod?.implementation?.registerCount ?: 1,
+    (templateMethod?.accessFlags ?: 0) and AccessFlags.STATIC.value != 0)
+
+/**
+ * Compile a line of Smali code to an instruction.
+ * @param templateMethod The method to compile the instructions against.
+ * @return The instruction.
+ */
+fun String.toInstruction(templateMethod: Method? = null) = this.toInstructions(templateMethod).first()

src/main/kotlin/app/revanced/patcher/util/smali/InstructionConverter.kt

@@ -0,0 +1,261 @@
+package app.revanced.patcher.util.smali
+
+import org.jf.dexlib2.Format
+import org.jf.dexlib2.builder.instruction.*
+import org.jf.dexlib2.iface.instruction.Instruction
+import org.jf.dexlib2.iface.instruction.formats.*
+import org.jf.util.ExceptionWithContext
+
+fun Instruction.toBuilderInstruction() =
+    when (this.opcode.format) {
+        Format.Format10x -> InstructionConverter.newBuilderInstruction10x(this as Instruction10x)
+        Format.Format11n -> InstructionConverter.newBuilderInstruction11n(this as Instruction11n)
+        Format.Format11x -> InstructionConverter.newBuilderInstruction11x(this as Instruction11x)
+        Format.Format12x -> InstructionConverter.newBuilderInstruction12x(this as Instruction12x)
+        Format.Format20bc -> InstructionConverter.newBuilderInstruction20bc(this as Instruction20bc)
+        Format.Format21c -> InstructionConverter.newBuilderInstruction21c(this as Instruction21c)
+        Format.Format21ih -> InstructionConverter.newBuilderInstruction21ih(this as Instruction21ih)
+        Format.Format21lh -> InstructionConverter.newBuilderInstruction21lh(this as Instruction21lh)
+        Format.Format21s -> InstructionConverter.newBuilderInstruction21s(this as Instruction21s)
+        Format.Format22b -> InstructionConverter.newBuilderInstruction22b(this as Instruction22b)
+        Format.Format22c -> InstructionConverter.newBuilderInstruction22c(this as Instruction22c)
+        Format.Format22cs -> InstructionConverter.newBuilderInstruction22cs(this as Instruction22cs)
+        Format.Format22s -> InstructionConverter.newBuilderInstruction22s(this as Instruction22s)
+        Format.Format22x -> InstructionConverter.newBuilderInstruction22x(this as Instruction22x)
+        Format.Format23x -> InstructionConverter.newBuilderInstruction23x(this as Instruction23x)
+        Format.Format31c -> InstructionConverter.newBuilderInstruction31c(this as Instruction31c)
+        Format.Format31i -> InstructionConverter.newBuilderInstruction31i(this as Instruction31i)
+        Format.Format32x -> InstructionConverter.newBuilderInstruction32x(this as Instruction32x)
+        Format.Format35c -> InstructionConverter.newBuilderInstruction35c(this as Instruction35c)
+        Format.Format35mi -> InstructionConverter.newBuilderInstruction35mi(this as Instruction35mi)
+        Format.Format35ms -> InstructionConverter.newBuilderInstruction35ms(this as Instruction35ms)
+        Format.Format3rc -> InstructionConverter.newBuilderInstruction3rc(this as Instruction3rc)
+        Format.Format3rmi -> InstructionConverter.newBuilderInstruction3rmi(this as Instruction3rmi)
+        Format.Format3rms -> InstructionConverter.newBuilderInstruction3rms(this as Instruction3rms)
+        Format.Format51l -> InstructionConverter.newBuilderInstruction51l(this as Instruction51l)
+        else -> throw ExceptionWithContext("Instruction format %s not supported", this.opcode.format)
+    }
+
+internal class InstructionConverter {
+    companion object {
+        internal fun newBuilderInstruction10x(instruction: Instruction10x): BuilderInstruction10x {
+            return BuilderInstruction10x(
+                instruction.opcode
+            )
+        }
+
+        internal fun newBuilderInstruction11n(instruction: Instruction11n): BuilderInstruction11n {
+            return BuilderInstruction11n(
+                instruction.opcode,
+                instruction.registerA,
+                instruction.narrowLiteral
+            )
+        }
+
+        internal fun newBuilderInstruction11x(instruction: Instruction11x): BuilderInstruction11x {
+            return BuilderInstruction11x(
+                instruction.opcode,
+                instruction.registerA
+            )
+        }
+
+        internal fun newBuilderInstruction12x(instruction: Instruction12x): BuilderInstruction12x {
+            return BuilderInstruction12x(
+                instruction.opcode,
+                instruction.registerA,
+                instruction.registerB
+            )
+        }
+
+        internal fun newBuilderInstruction20bc(instruction: Instruction20bc): BuilderInstruction20bc {
+            return BuilderInstruction20bc(
+                instruction.opcode,
+                instruction.verificationError,
+                instruction.reference
+            )
+        }
+
+        internal fun newBuilderInstruction21c(instruction: Instruction21c): BuilderInstruction21c {
+            return BuilderInstruction21c(
+                instruction.opcode,
+                instruction.registerA,
+                instruction.reference
+            )
+        }
+
+        internal fun newBuilderInstruction21ih(instruction: Instruction21ih): BuilderInstruction21ih {
+            return BuilderInstruction21ih(
+                instruction.opcode,
+                instruction.registerA,
+                instruction.narrowLiteral
+            )
+        }
+
+        internal fun newBuilderInstruction21lh(instruction: Instruction21lh): BuilderInstruction21lh {
+            return BuilderInstruction21lh(
+                instruction.opcode,
+                instruction.registerA,
+                instruction.wideLiteral
+            )
+        }
+
+        internal fun newBuilderInstruction21s(instruction: Instruction21s): BuilderInstruction21s {
+            return BuilderInstruction21s(
+                instruction.opcode,
+                instruction.registerA,
+                instruction.narrowLiteral
+            )
+        }
+
+        internal fun newBuilderInstruction22b(instruction: Instruction22b): BuilderInstruction22b {
+            return BuilderInstruction22b(
+                instruction.opcode,
+                instruction.registerA,
+                instruction.registerB,
+                instruction.narrowLiteral
+            )
+        }
+
+        internal fun newBuilderInstruction22c(instruction: Instruction22c): BuilderInstruction22c {
+            return BuilderInstruction22c(
+                instruction.opcode,
+                instruction.registerA,
+                instruction.registerB,
+                instruction.reference
+            )
+        }
+
+        internal fun newBuilderInstruction22cs(instruction: Instruction22cs): BuilderInstruction22cs {
+            return BuilderInstruction22cs(
+                instruction.opcode,
+                instruction.registerA,
+                instruction.registerB,
+                instruction.fieldOffset
+            )
+        }
+
+        internal fun newBuilderInstruction22s(instruction: Instruction22s): BuilderInstruction22s {
+            return BuilderInstruction22s(
+                instruction.opcode,
+                instruction.registerA,
+                instruction.registerB,
+                instruction.narrowLiteral
+            )
+        }
+
+        internal fun newBuilderInstruction22x(instruction: Instruction22x): BuilderInstruction22x {
+            return BuilderInstruction22x(
+                instruction.opcode,
+                instruction.registerA,
+                instruction.registerB
+            )
+        }
+
+        internal fun newBuilderInstruction23x(instruction: Instruction23x): BuilderInstruction23x {
+            return BuilderInstruction23x(
+                instruction.opcode,
+                instruction.registerA,
+                instruction.registerB,
+                instruction.registerC
+            )
+        }
+
+        internal fun newBuilderInstruction31c(instruction: Instruction31c): BuilderInstruction31c {
+            return BuilderInstruction31c(
+                instruction.opcode,
+                instruction.registerA,
+                instruction.reference
+            )
+        }
+
+        internal fun newBuilderInstruction31i(instruction: Instruction31i): BuilderInstruction31i {
+            return BuilderInstruction31i(
+                instruction.opcode,
+                instruction.registerA,
+                instruction.narrowLiteral
+            )
+        }
+
+        internal fun newBuilderInstruction32x(instruction: Instruction32x): BuilderInstruction32x {
+            return BuilderInstruction32x(
+                instruction.opcode,
+                instruction.registerA,
+                instruction.registerB
+            )
+        }
+
+        internal fun newBuilderInstruction35c(instruction: Instruction35c): BuilderInstruction35c {
+            return BuilderInstruction35c(
+                instruction.opcode,
+                instruction.registerCount,
+                instruction.registerC,
+                instruction.registerD,
+                instruction.registerE,
+                instruction.registerF,
+                instruction.registerG,
+                instruction.reference
+            )
+        }
+
+        internal fun newBuilderInstruction35mi(instruction: Instruction35mi): BuilderInstruction35mi {
+            return BuilderInstruction35mi(
+                instruction.opcode,
+                instruction.registerCount,
+                instruction.registerC,
+                instruction.registerD,
+                instruction.registerE,
+                instruction.registerF,
+                instruction.registerG,
+                instruction.inlineIndex
+            )
+        }
+
+        internal fun newBuilderInstruction35ms(instruction: Instruction35ms): BuilderInstruction35ms {
+            return BuilderInstruction35ms(
+                instruction.opcode,
+                instruction.registerCount,
+                instruction.registerC,
+                instruction.registerD,
+                instruction.registerE,
+                instruction.registerF,
+                instruction.registerG,
+                instruction.vtableIndex
+            )
+        }
+
+        internal fun newBuilderInstruction3rc(instruction: Instruction3rc): BuilderInstruction3rc {
+            return BuilderInstruction3rc(
+                instruction.opcode,
+                instruction.startRegister,
+                instruction.registerCount,
+                instruction.reference
+            )
+        }
+
+        internal fun newBuilderInstruction3rmi(instruction: Instruction3rmi): BuilderInstruction3rmi {
+            return BuilderInstruction3rmi(
+                instruction.opcode,
+                instruction.startRegister,
+                instruction.registerCount,
+                instruction.inlineIndex
+            )
+        }
+
+        internal fun newBuilderInstruction3rms(instruction: Instruction3rms): BuilderInstruction3rms {
+            return BuilderInstruction3rms(
+                instruction.opcode,
+                instruction.startRegister,
+                instruction.registerCount,
+                instruction.vtableIndex
+            )
+        }
+
+        internal fun newBuilderInstruction51l(instruction: Instruction51l): BuilderInstruction51l {
+            return BuilderInstruction51l(
+                instruction.opcode,
+                instruction.registerA,
+                instruction.wideLiteral
+            )
+        }
+    }
+}

src/main/kotlin/net/revanced/patcher/Patcher.kt

@@ -1,53 +0,0 @@
-package net.revanced.patcher
-
-import net.revanced.patcher.cache.Cache
-import net.revanced.patcher.patch.Patch
-import net.revanced.patcher.resolver.MethodResolver
-import net.revanced.patcher.signature.Signature
-import net.revanced.patcher.util.Io
-import java.io.InputStream
-import java.io.OutputStream
-
-/**
- * The patcher. (docs WIP)
- *
- * @param input the input stream to read from, must be a JAR
- * @param signatures the signatures
- * @sample net.revanced.patcher.PatcherTest
- */
-class Patcher(
-    private val input: InputStream,
-    signatures: Array<Signature>,
-) {
-    var cache: Cache
-    private val patches: MutableList<Patch> = mutableListOf()
-
-    init {
-        val classes = Io.readClassesFromJar(input);
-        cache = Cache(classes, MethodResolver(classes, signatures).resolve())
-    }
-
-    fun addPatches(vararg patches: Patch) {
-        this.patches.addAll(patches)
-    }
-
-    fun applyPatches(stopOnError: Boolean = false): Map<String, Result<Nothing?>> {
-        return buildMap {
-            for (patch in patches) {
-                val result: Result<Nothing?> = try {
-                    val pr = patch.execute()
-                    if (pr.isSuccess()) continue
-                    Result.failure(Exception(pr.error()?.errorMessage() ?: "Unknown error"))
-                } catch (e: Exception) {
-                    Result.failure(e)
-                }
-                this[patch.patchName] = result
-                if (stopOnError && result.isFailure) break
-            }
-        }
-    }
-
-    fun saveTo(output: OutputStream) {
-        Io.writeClassesToJar(input, output, cache.classes)
-    }
-}

src/main/kotlin/net/revanced/patcher/cache/Cache.kt

@@ -1,16 +0,0 @@
-package net.revanced.patcher.cache
-
-import org.objectweb.asm.tree.ClassNode
-
-class Cache (
-    val classes: List<ClassNode>,
-    val methods: MethodMap
-)
-
-class MethodMap : LinkedHashMap<String, PatchData>() {
-    override fun get(key: String): PatchData {
-        return super.get(key) ?: throw MethodNotFoundException("Method $key was not found in the method cache")
-    }
-}
-
-class MethodNotFoundException(s: String) : Exception(s)

src/main/kotlin/net/revanced/patcher/cache/PatchData.kt

@@ -1,15 +0,0 @@
-package net.revanced.patcher.cache
-
-import org.objectweb.asm.tree.ClassNode
-import org.objectweb.asm.tree.MethodNode
-
-data class PatchData(
-    val declaringClass: ClassNode,
-    val method: MethodNode,
-    val scanData: PatternScanData
-)
-
-data class PatternScanData(
-    val startIndex: Int,
-    val endIndex: Int
-)

src/main/kotlin/net/revanced/patcher/patch/Patch.kt

@@ -1,9 +0,0 @@
-package net.revanced.patcher.patch
-
-class Patch(val patchName: String, val fn: () -> PatchResult) {
-    fun execute(): PatchResult {
-        return fn()
-    }
-}
-
-

src/main/kotlin/net/revanced/patcher/resolver/MethodResolver.kt

@@ -1,128 +0,0 @@
-package net.revanced.patcher.resolver
-
-import mu.KotlinLogging
-import net.revanced.patcher.cache.MethodMap
-import net.revanced.patcher.cache.PatchData
-import net.revanced.patcher.cache.PatternScanData
-import net.revanced.patcher.signature.Signature
-import net.revanced.patcher.util.ExtraTypes
-import org.objectweb.asm.Type
-import org.objectweb.asm.tree.ClassNode
-import org.objectweb.asm.tree.InsnList
-import org.objectweb.asm.tree.MethodNode
-
-private val logger = KotlinLogging.logger("MethodResolver")
-
-internal class MethodResolver(private val classList: List<ClassNode>, private val signatures: Array<Signature>) {
-    fun resolve(): MethodMap {
-        val methodMap = MethodMap()
-
-        for ((classNode, methods) in classList) {
-            for (method in methods) {
-                for (signature in signatures) {
-                    if (methodMap.containsKey(signature.name)) { // method already found for this sig
-                        logger.debug { "Sig ${signature.name} already found, skipping." }
-                        continue
-                    }
-                    logger.debug { "Resolving sig ${signature.name}: ${classNode.name} / ${method.name}" }
-                    val (r, sr) = this.cmp(method, signature)
-                    if (!r || sr == null) {
-                        logger.debug { "Compare result for sig ${signature.name} has failed!" }
-                        continue
-                    }
-                    logger.debug { "Method for sig ${signature.name} found!" }
-                    methodMap[signature.name] = PatchData(
-                        classNode,
-                        method,
-                        PatternScanData(
-                            // sadly we cannot create contracts for a data class, so we must assert
-                            sr.startIndex!!,
-                            sr.endIndex!!
-                        )
-                    )
-                }
-            }
-        }
-
-        for (signature in signatures) {
-            if (methodMap.containsKey(signature.name)) continue
-            logger.error { "Could not find method for sig ${signature.name}!" }
-        }
-
-        return methodMap
-    }
-
-    private fun cmp(method: MethodNode, signature: Signature): Pair<Boolean, ScanResult?> {
-        val returns = Type.getReturnType(method.desc).convertObject()
-        if (signature.returns != returns) {
-            logger.debug {
-                """
-                    Comparing sig ${signature.name}: invalid return type:
-                    expected ${signature.returns}},
-                    got $returns
-                """.trimIndent()
-            }
-            return false to null
-        }
-
-        if (signature.accessors != method.access) {
-            logger.debug { "Comparing sig ${signature.name}: invalid accessors:\nexpected ${signature.accessors},\ngot ${method.access}" }
-            return false to null
-        }
-
-        val parameters = Type.getArgumentTypes(method.desc).convertObjects()
-        if (!signature.parameters.contentEquals(parameters)) {
-            logger.debug {
-                """
-                    Comparing sig ${signature.name}: invalid parameter types:
-                    expected ${signature.parameters.joinToString()}},
-                    got ${parameters.joinToString()}
-                """.trimIndent()
-            }
-            return false to null
-        }
-
-        val result = method.instructions.scanFor(signature.opcodes)
-        if (!result.found) {
-            logger.debug { "Comparing sig ${signature.name}: invalid opcode pattern" }
-            return false to null
-        }
-
-        return true to result
-    }
-}
-
-private operator fun ClassNode.component1(): ClassNode {
-    return this
-}
-
-private operator fun ClassNode.component2(): List<MethodNode> {
-    return this.methods
-}
-
-private fun InsnList.scanFor(pattern: Array<Int>): ScanResult {
-    for (i in 0 until this.size()) {
-        var occurrence = 0
-        while (i + occurrence < this.size()) {
-            if (this[i + occurrence].opcode != pattern[occurrence]) break
-            if (++occurrence >= pattern.size) {
-                val current = i + occurrence
-                return ScanResult(true, current - pattern.size, current)
-            }
-        }
-    }
-
-    return ScanResult(false)
-}
-
-private fun Type.convertObject(): Type {
-    return when (this.sort) {
-        Type.OBJECT -> ExtraTypes.Any
-        Type.ARRAY -> ExtraTypes.ArrayAny
-        else -> this
-    }
-}
-
-private fun Array<Type>.convertObjects(): Array<Type> {
-    return this.map { it.convertObject() }.toTypedArray()
-}

src/main/kotlin/net/revanced/patcher/resolver/ScanResult.kt

@@ -1,7 +0,0 @@
-package net.revanced.patcher.resolver
-
-internal data class ScanResult(
-    val found: Boolean,
-    val startIndex: Int? = 0,
-    val endIndex: Int? = 0
-)

src/main/kotlin/net/revanced/patcher/signature/Signature.kt

@@ -1,25 +0,0 @@
-package net.revanced.patcher.signature
-
-import org.objectweb.asm.Type
-
-/**
- * An ASM signature list for the Patcher.
- *
- * @param name The name of the method.
- * Do not use the actual method name, instead try to guess what the method name originally was.
- * If you are unable to guess a method name, doing something like "patch-name-1" is fine too.
- * For example: "override-codec-1".
- * This method name will be used to find the corresponding patch.
- * @param returns The return type/signature of the method.
- * @param accessors The accessors of the method.
- * @param parameters The parameter types of the method.
- * @param opcodes The opcode pattern of the method, used to find the method by pattern scanning.
- */
-@Suppress("ArrayInDataClass")
-data class Signature(
-    val name: String,
-    val returns: Type,
-    val accessors: Int,
-    val parameters: Array<Type>,
-    val opcodes: Array<Int>
-)

src/main/kotlin/net/revanced/patcher/util/ExtraTypes.kt

@@ -1,12 +0,0 @@
-package net.revanced.patcher.util
-
-import org.objectweb.asm.Type
-
-object ExtraTypes {
-    /**
-     * Any object type.
-     * Should be used instead of types such as: "Ljava/lang/String;"
-     */
-    val Any: Type = Type.getType(Object::class.java)
-    val ArrayAny: Type = Type.getType(Array<Any>::class.java)
-}

src/main/kotlin/net/revanced/patcher/util/Io.kt

@@ -1,49 +0,0 @@
-package net.revanced.patcher.util
-
-import org.objectweb.asm.ClassReader
-import org.objectweb.asm.ClassWriter
-import org.objectweb.asm.tree.ClassNode
-import java.io.InputStream
-import java.io.OutputStream
-import java.util.jar.JarEntry
-import java.util.jar.JarInputStream
-import java.util.jar.JarOutputStream
-
-object Io {
-    fun readClassesFromJar(input: InputStream) = mutableListOf<ClassNode>().apply {
-        val jar = JarInputStream(input)
-            while (true) {
-                val e = jar.nextJarEntry ?: break
-                if (e.name.endsWith(".class")) {
-                    val classNode = ClassNode()
-                    ClassReader(jar.readAllBytes()).accept(classNode, ClassReader.EXPAND_FRAMES)
-                        this.add(classNode)
-                }
-                jar.closeEntry()
-            }
-    }
-
-    fun writeClassesToJar(input: InputStream, output: OutputStream, classes: List<ClassNode>) {
-        val jis = JarInputStream(input)
-        val jos = JarOutputStream(output)
-
-        // TODO: Add support for adding new/custom classes
-        while (true) {
-            val next = jis.nextJarEntry ?: break
-            val e = JarEntry(next) // clone it, to not modify the input (if possible)
-            jos.putNextEntry(e)
-
-            val clazz = classes.singleOrNull {
-                    clazz -> clazz.name == e.name
-            };
-            if (clazz != null) {
-                val cw = ClassWriter(ClassWriter.COMPUTE_MAXS or ClassWriter.COMPUTE_FRAMES)
-                clazz.accept(cw)
-                jos.write(cw.toByteArray())
-            } else {
-                jos.write(jis.readAllBytes())
-            }
-            jos.closeEntry()
-        }
-    }
-}

src/main/kotlin/net/revanced/patcher/writer/ASMWriter.kt

@@ -1,20 +0,0 @@
-package net.revanced.patcher.writer
-
-import org.objectweb.asm.tree.AbstractInsnNode
-import org.objectweb.asm.tree.InsnList
-
-object ASMWriter {
-    fun InsnList.setAt(index: Int, node: AbstractInsnNode) {
-        this[this.get(index)] = node
-    }
-    fun InsnList.insertAt(index: Int, vararg nodes: AbstractInsnNode) {
-        this.insert(this.get(index), nodes.toInsnList())
-    }
-
-    // TODO(Sculas): Should this be public?
-    private fun Array<out AbstractInsnNode>.toInsnList(): InsnList {
-        val list = InsnList()
-        this.forEach { list.add(it) }
-        return list
-    }
-}

src/test/kotlin/app/revanced/patcher/usage/PatcherTest.kt

@@ -0,0 +1,46 @@
+package app.revanced.patcher.usage
+
+import org.junit.jupiter.api.Test
+
+internal class PatcherTest {
+    @Test
+    fun testPatcher() {
+        return // FIXME: create a proper resource to pass this test
+        /**
+        val patcher = Patcher(
+        File(PatcherTest::class.java.getResource("/example.apk")!!.toURI()),
+        "exampleCacheDirectory",
+        patchResources = true
+        )
+
+        patcher.addPatches(listOf(ExampleBytecodePatch(), ExampleResourcePatch()))
+
+        for (signature in patcher.resolveSignatures()) {
+        if (!signature.resolved) {
+        throw Exception("Signature ${signature.metadata.name} was not resolved!")
+        }
+        val patternScanMethod = signature.metadata.patternScanMethod
+        if (patternScanMethod is PatternScanMethod.Fuzzy) {
+        val warnings = patternScanMethod.warnings
+        if (warnings != null) {
+        println("Signature ${signature.metadata.name} had ${warnings.size} warnings!")
+        for (warning in warnings) {
+        println(warning.toString())
+        }
+        } else {
+        println("Signature ${signature.metadata.name} used the fuzzy resolver, but the warnings list is null!")
+        }
+        }
+        }
+        for ((metadata, result) in patcher.applyPatches()) {
+        if (result.isFailure) {
+        throw Exception("Patch ${metadata.shortName} failed", result.exceptionOrNull()!!)
+        } else {
+        println("Patch ${metadata.shortName} applied successfully!")
+        }
+        }
+        val out = patcher.save()
+        assertTrue(out.isNotEmpty(), "Expected the output of Patcher#save() to not be empty.")
+         */
+    }
+}

src/test/kotlin/app/revanced/patcher/usage/bytecode/annotation/ExampleBytecodeCompatibility.kt

@@ -0,0 +1,14 @@
+package app.revanced.patcher.usage.bytecode.annotation
+
+import app.revanced.patcher.annotation.Compatibility
+import app.revanced.patcher.annotation.Package
+
+@Compatibility(
+    [Package(
+        "com.example.examplePackage", arrayOf("0.0.1", "0.0.2")
+    )]
+)
+@Target(AnnotationTarget.CLASS)
+@Retention(AnnotationRetention.RUNTIME)
+internal annotation class ExampleBytecodeCompatibility
+

src/test/kotlin/app/revanced/patcher/usage/bytecode/patch/ExampleBytecodePatch.kt

@@ -0,0 +1,168 @@
+package app.revanced.patcher.usage.bytecode.patch
+
+import app.revanced.patcher.annotation.Description
+import app.revanced.patcher.annotation.Name
+import app.revanced.patcher.annotation.Version
+import app.revanced.patcher.data.implementation.BytecodeData
+import app.revanced.patcher.extensions.addInstructions
+import app.revanced.patcher.extensions.or
+import app.revanced.patcher.patch.annotations.Patch
+import app.revanced.patcher.patch.implementation.BytecodePatch
+import app.revanced.patcher.patch.implementation.misc.PatchResult
+import app.revanced.patcher.patch.implementation.misc.PatchResultSuccess
+import app.revanced.patcher.usage.bytecode.signatures.ExampleSignature
+import app.revanced.patcher.usage.resource.annotation.ExampleResourceCompatibility
+import app.revanced.patcher.util.proxy.mutableTypes.MutableField.Companion.toMutable
+import app.revanced.patcher.util.proxy.mutableTypes.MutableMethod.Companion.toMutable
+import app.revanced.patcher.util.smali.toInstruction
+import com.google.common.collect.ImmutableList
+import org.jf.dexlib2.AccessFlags
+import org.jf.dexlib2.Format
+import org.jf.dexlib2.Opcode
+import org.jf.dexlib2.builder.MutableMethodImplementation
+import org.jf.dexlib2.builder.instruction.BuilderInstruction11x
+import org.jf.dexlib2.builder.instruction.BuilderInstruction21c
+import org.jf.dexlib2.iface.instruction.formats.Instruction21c
+import org.jf.dexlib2.immutable.ImmutableField
+import org.jf.dexlib2.immutable.ImmutableMethod
+import org.jf.dexlib2.immutable.ImmutableMethodImplementation
+import org.jf.dexlib2.immutable.reference.ImmutableFieldReference
+import org.jf.dexlib2.immutable.reference.ImmutableStringReference
+import org.jf.dexlib2.immutable.value.ImmutableFieldEncodedValue
+import org.jf.dexlib2.util.Preconditions
+
+@Patch
+@Name("example-bytecode-patch")
+@Description("Example demonstration of a bytecode patch.")
+@ExampleResourceCompatibility
+@Version("0.0.1")
+class ExampleBytecodePatch : BytecodePatch(
+
+    listOf(
+        ExampleSignature
+    )
+) {
+    // This function will be executed by the patcher.
+    // You can treat it as a constructor
+    override fun execute(data: BytecodeData): PatchResult {
+        // Get the resolved method for the signature from the resolver cache
+        val result = ExampleSignature.result!!
+
+        // Get the implementation for the resolved method
+        val implementation = result.method.implementation!!
+
+        // Let's modify it, so it prints "Hello, ReVanced! Editing bytecode."
+        // Get the start index of our opcode pattern.
+        // This will be the index of the instruction with the opcode CONST_STRING.
+        val startIndex = result.scanResult.startIndex
+
+        implementation.replaceStringAt(startIndex, "Hello, ReVanced! Editing bytecode.")
+
+        // Get the class in which the method matching our signature is defined in.
+        val mainClass = data.findClass {
+            it.type == result.definingClassProxy.immutableClass.type
+        }!!.resolve()
+
+        // Add a new method returning a string
+        mainClass.methods.add(
+            ImmutableMethod(
+                result.definingClassProxy.immutableClass.type,
+                "returnHello",
+                null,
+                "Ljava/lang/String;",
+                AccessFlags.PRIVATE or AccessFlags.STATIC,
+                null,
+                null,
+                ImmutableMethodImplementation(
+                    1,
+                    ImmutableList.of(
+                        BuilderInstruction21c(
+                            Opcode.CONST_STRING,
+                            0,
+                            ImmutableStringReference("Hello, ReVanced! Adding bytecode.")
+                        ),
+                        BuilderInstruction11x(Opcode.RETURN_OBJECT, 0)
+                    ),
+                    null,
+                    null
+                )
+            ).toMutable()
+        )
+
+        // Add a field in the main class
+        // We will use this field in our method below to call println on
+        // The field holds the Ljava/io/PrintStream->out; field
+        mainClass.fields.add(
+            ImmutableField(
+                mainClass.type,
+                "dummyField",
+                "Ljava/io/PrintStream;",
+                AccessFlags.PRIVATE or AccessFlags.STATIC,
+                ImmutableFieldEncodedValue(
+                    ImmutableFieldReference(
+                        "Ljava/lang/System;",
+                        "out",
+                        "Ljava/io/PrintStream;"
+                    )
+                ),
+                null,
+                null
+            ).toMutable()
+        )
+
+        // store the fields initial value into the first virtual register
+        implementation.replaceInstruction(
+            0,
+            "sget-object v0, LTestClass;->dummyField:Ljava/io/PrintStream;".toInstruction()
+        )
+
+        // Now let's create a new call to our method and print the return value!
+        // You can also use the smali compiler to create instructions.
+        // For this sake of example I reuse the TestClass field dummyField inside the virtual register 0.
+        //
+        // Control flow instructions are not supported as of now.
+        val instructions = """
+                        invoke-static { }, LTestClass;->returnHello()Ljava/lang/String;
+                        move-result-object v1
+                        invoke-virtual { v0, v1 }, Ljava/io/PrintStream;->println(Ljava/lang/String;)V
+                    """
+        result.method.addInstructions(startIndex + 2, instructions)
+
+        // Finally, tell the patcher that this patch was a success.
+        // You can also return PatchResultError with a message.
+        // If an exception is thrown inside this function,
+        // a PatchResultError will be returned with the error message.
+        return PatchResultSuccess()
+    }
+
+    /**
+     * Replace the string for an instruction at the given index with a new one.
+     * @param index The index of the instruction to replace the string for
+     * @param string The replacing string
+     */
+    private fun MutableMethodImplementation.replaceStringAt(index: Int, string: String) {
+        val instruction = this.instructions[index]
+
+        // Utility method of dexlib2
+        Preconditions.checkFormat(instruction.opcode, Format.Format21c)
+
+        // Cast this to an instruction of the format 21c
+        // The instruction format can be found in the docs at
+        // https://source.android.com/devices/tech/dalvik/dalvik-bytecode
+        val strInstruction = instruction as Instruction21c
+
+        // In our case we want an instruction with the opcode CONST_STRING
+        // The format is 21c, so we create a new BuilderInstruction21c
+        // This instruction will hold the string reference constant in the virtual register of the original instruction
+        // For that a reference to the string is needed. It can be created with an ImmutableStringReference.
+        // At last, use the method replaceInstruction to replace it at the given index startIndex.
+        this.replaceInstruction(
+            index,
+            BuilderInstruction21c(
+                Opcode.CONST_STRING,
+                strInstruction.registerA,
+                ImmutableStringReference(string)
+            )
+        )
+    }
+}

src/test/kotlin/app/revanced/patcher/usage/bytecode/signatures/ExampleSignature.kt

@@ -0,0 +1,32 @@
+package app.revanced.patcher.usage.bytecode.signatures
+
+import app.revanced.patcher.annotation.Name
+import app.revanced.patcher.annotation.Version
+import app.revanced.patcher.extensions.or
+import app.revanced.patcher.signature.implementation.method.MethodSignature
+import app.revanced.patcher.signature.implementation.method.annotation.FuzzyPatternScanMethod
+import app.revanced.patcher.signature.implementation.method.annotation.MatchingMethod
+import app.revanced.patcher.usage.bytecode.annotation.ExampleBytecodeCompatibility
+import org.jf.dexlib2.AccessFlags
+import org.jf.dexlib2.Opcode
+
+@Name("example-signature")
+@MatchingMethod(
+    "LexampleClass;",
+    "exampleMehod"
+)
+@FuzzyPatternScanMethod(2)
+@ExampleBytecodeCompatibility
+@Version("0.0.1")
+object ExampleSignature : MethodSignature(
+    "V",
+    AccessFlags.PUBLIC or AccessFlags.STATIC,
+    listOf("[L"),
+    listOf(
+        Opcode.SGET_OBJECT,
+        null,                 // Testing unknown opcodes.
+        Opcode.INVOKE_STATIC, // This is intentionally wrong to test the Fuzzy resolver.
+        Opcode.RETURN_VOID
+    ),
+    null
+)

src/test/kotlin/app/revanced/patcher/usage/resource/annotation/ExampleResourceCompatibility.kt

@@ -0,0 +1,14 @@
+package app.revanced.patcher.usage.resource.annotation
+
+import app.revanced.patcher.annotation.Compatibility
+import app.revanced.patcher.annotation.Package
+
+@Compatibility(
+    [Package(
+        "com.example.examplePackage", arrayOf("0.0.1", "0.0.2")
+    )]
+)
+@Target(AnnotationTarget.CLASS)
+@Retention(AnnotationRetention.RUNTIME)
+internal annotation class ExampleResourceCompatibility
+

src/test/kotlin/app/revanced/patcher/usage/resource/patch/ExampleResourcePatch.kt

@@ -0,0 +1,47 @@
+package app.revanced.patcher.usage.resource.patch
+
+import app.revanced.patcher.annotation.Description
+import app.revanced.patcher.annotation.Name
+import app.revanced.patcher.annotation.Version
+import app.revanced.patcher.data.implementation.ResourceData
+import app.revanced.patcher.patch.annotations.Patch
+import app.revanced.patcher.patch.implementation.ResourcePatch
+import app.revanced.patcher.patch.implementation.misc.PatchResult
+import app.revanced.patcher.patch.implementation.misc.PatchResultSuccess
+import app.revanced.patcher.usage.resource.annotation.ExampleResourceCompatibility
+import org.w3c.dom.Element
+
+@Patch
+@Name("example-resource-patch")
+@Description("Example demonstration of a resource patch.")
+@ExampleResourceCompatibility
+@Version("0.0.1")
+class ExampleResourcePatch : ResourcePatch() {
+    override fun execute(data: ResourceData): PatchResult {
+        data.getXmlEditor("AndroidManifest.xml").use { domFileEditor ->
+            val element = domFileEditor // regular DomFileEditor
+                .file
+                .getElementsByTagName("application")
+                .item(0) as Element
+            element
+                .setAttribute(
+                    "exampleAttribute",
+                    "exampleValue"
+                )
+        }
+
+        // iterate through all available resources
+        data.forEach {
+            if (it.extension.lowercase() != "xml") return@forEach
+
+            data.replace(
+                it.path,
+                "\\ddip", // regex supported
+                "0dip",
+                true
+            )
+        }
+
+        return PatchResultSuccess()
+    }
+}

src/test/kotlin/net/revanced/patcher/PatcherTest.kt

@@ -1,144 +0,0 @@
-package net.revanced.patcher
-
-import net.revanced.patcher.patch.Patch
-import net.revanced.patcher.patch.PatchResultSuccess
-import net.revanced.patcher.signature.Signature
-import net.revanced.patcher.util.ExtraTypes
-import net.revanced.patcher.util.TestUtil
-import net.revanced.patcher.writer.ASMWriter.insertAt
-import net.revanced.patcher.writer.ASMWriter.setAt
-import org.objectweb.asm.Opcodes.*
-import org.objectweb.asm.Type
-import org.objectweb.asm.tree.*
-import java.io.PrintStream
-import kotlin.test.Test
-
-internal class PatcherTest {
-    companion object {
-        val testSigs: Array<Signature> = arrayOf(
-            // Java:
-            // public static void main(String[] args) {
-            //     System.out.println("Hello, world!");
-            // }
-            // Bytecode:
-            // public static main(java.lang.String[] arg0) { // Method signature: ([Ljava/lang/String;)V
-            //     getstatic java/lang/System.out:java.io.PrintStream
-            //     ldc "Hello, world!" (java.lang.String)
-            //     invokevirtual java/io/PrintStream.println(Ljava/lang/String;)V
-            //     return
-            // }
-            Signature(
-                "mainMethod",
-                Type.VOID_TYPE,
-                ACC_PUBLIC or ACC_STATIC,
-                arrayOf(ExtraTypes.ArrayAny),
-                arrayOf(
-                    LDC,
-                    INVOKEVIRTUAL
-                )
-            )
-        )
-    }
-
-    @Test
-    fun testPatcher() {
-        val testData = PatcherTest::class.java.getResourceAsStream("/test1.jar")!!
-        val patcher = Patcher(testData, testSigs)
-
-        patcher.addPatches(
-            Patch ("TestPatch") {
-                // Get the method from the resolver cache
-                val mainMethod = patcher.cache.methods["mainMethod"]
-                // Get the instruction list
-                val instructions = mainMethod.method.instructions!!
-
-                // Let's modify it, so it prints "Hello, ReVanced! Editing bytecode."
-                // Get the start index of our opcode pattern.
-                // This will be the index of the LDC instruction.
-                val startIndex = mainMethod.scanData.startIndex
-                TestUtil.assertNodeEqual(LdcInsnNode("Hello, world!"), instructions[startIndex]!!)
-                // Create a new LDC node and replace the LDC instruction.
-                val stringNode = LdcInsnNode("Hello, ReVanced! Editing bytecode.")
-                instructions.setAt(startIndex, stringNode)
-
-                // Now lets print our string twice!
-                // Insert our instructions after the second instruction by our pattern.
-                // This will place our instructions after the original INVOKEVIRTUAL call.
-                // You could also copy the instructions from the list and then modify the LDC instruction again,
-                // but this is to show a more advanced example of writing bytecode using the patcher and ASM.
-                instructions.insertAt(
-                    startIndex + 1,
-                    FieldInsnNode(
-                        GETSTATIC,
-                        Type.getInternalName(System::class.java), // "java/io/System"
-                        "out",
-                        Type.getInternalName(PrintStream::class.java) // "java.io.PrintStream"
-                    ),
-                    LdcInsnNode("Hello, ReVanced! Adding bytecode."),
-                    MethodInsnNode(
-                        INVOKEVIRTUAL,
-                        Type.getInternalName(PrintStream::class.java), // "java/io/PrintStream"
-                        "println",
-                        Type.getMethodDescriptor(
-                            Type.VOID_TYPE,
-                            Type.getType(String::class.java)
-                        ) // "(Ljava/lang/String;)V"
-                    )
-                )
-
-                // Our code now looks like this:
-                // public static main(java.lang.String[] arg0) { // Method signature: ([Ljava/lang/String;)V
-                //     getstatic java/lang/System.out:java.io.PrintStream
-                //     ldc "Hello, ReVanced! Editing bytecode." (java.lang.String) // We overwrote this instruction.
-                //     invokevirtual java/io/PrintStream.println(Ljava/lang/String;)V
-                //     getstatic java/lang/System.out:java.io.PrintStream // This instruction and the 2 instructions below are written manually.
-                //     ldc "Hello, ReVanced! Adding bytecode." (java.lang.String)
-                //     invokevirtual java/io/PrintStream.println(Ljava/lang/String;)V
-                //     return
-                // }
-
-                // Finally, tell the patcher that this patch was a success.
-                // You can also return PatchResultError with a message.
-                // If an exception is thrown inside this function,
-                // a PatchResultError will be returned with the error message.
-                PatchResultSuccess()
-            }
-        )
-
-        // Apply all patches loaded in the patcher
-        val result = patcher.applyPatches()
-        // You can check if an error occurred
-        for ((s, r) in result) {
-            if (r.isFailure) {
-                throw Exception("Patch $s failed", r.exceptionOrNull()!!)
-            }
-        }
-
-        // TODO Doesn't work, needs to be fixed.
-        //val out = ByteArrayOutputStream()
-        //patcher.saveTo(out)
-        //assertTrue(
-        //    // 8 is a random value, it's just weird if it's any lower than that
-        //    out.size() > 8,
-        //    "Output must be at least 8 bytes"
-        //)
-        //
-        //out.close()
-        testData.close()
-    }
-
-    // TODO Doesn't work, needs to be fixed.
-    //@Test
-    //fun `test patcher with no changes`() {
-    //    val testData = PatcherTest::class.java.getResourceAsStream("/test1.jar")!!
-    //    val available = testData.available()
-    //    val patcher = Patcher(testData, testSigs)
-    //
-    //    val out = ByteArrayOutputStream()
-    //    patcher.saveTo(out)
-    //    assertEquals(available, out.size())
-    //
-    //    out.close()
-    //    testData.close()
-    //}
-}

src/test/kotlin/net/revanced/patcher/ReaderTest.kt

@@ -1,12 +0,0 @@
-package net.revanced.patcher
-
-import kotlin.test.Test
-
-internal class ReaderTest {
-    @Test
-    fun `read jar containing multiple classes`() {
-        val testData = PatcherTest::class.java.getResourceAsStream("/test2.jar")!!
-        Patcher(testData, PatcherTest.testSigs) // reusing test sigs from PatcherTest
-        testData.close()
-    }
-}

src/test/kotlin/net/revanced/patcher/util/TestUtil.kt

@@ -1,44 +0,0 @@
-package net.revanced.patcher.util
-
-import org.objectweb.asm.tree.AbstractInsnNode
-import org.objectweb.asm.tree.FieldInsnNode
-import org.objectweb.asm.tree.LdcInsnNode
-import kotlin.test.fail
-
-object TestUtil {
-    fun <T: AbstractInsnNode> assertNodeEqual(expected: T, actual: T) {
-        val a = expected.nodeString()
-        val b = actual.nodeString()
-        if (a != b) {
-            fail("expected: $a,\nactual: $b\n")
-        }
-    }
-
-    private fun AbstractInsnNode.nodeString(): String {
-        val sb = NodeStringBuilder()
-        when (this) {
-            // TODO: Add more types
-            is LdcInsnNode -> sb
-                .addType("cst", cst)
-            is FieldInsnNode -> sb
-                .addType("owner", owner)
-                .addType("name", name)
-                .addType("desc", desc)
-        }
-        return "(${this::class.simpleName}): (type = $type, opcode = $opcode, $sb)"
-    }
-}
-
-private class NodeStringBuilder {
-    private val sb = StringBuilder()
-
-    fun addType(name: String, value: Any): NodeStringBuilder {
-        sb.append("$name = \"$value\", ")
-        return this
-    }
-
-    override fun toString(): String {
-        val s = sb.toString()
-        return s.substring(0 until s.length - 2) // remove the last ", "
-    }
-}