Automated migrations using lint and LM

This is a fork of the DuckDuckGo Android project. We chose this project to experiment on for two reasons:

1. It's public so we don't have to worry about jeopardizing intellectual property
2. It's representative of a large Android project
3. It already has integration with lint, so this makes it easier to try out new things.

Note that the DuckDuckGo Android codebase is probably in the training data for many LMs given the age of the public repo on GitHub.

This repo is merely using the DuckDuckGo Android code for experimentation. The author is not affiliated in any way with DuckDuckGo.

What's to see here?

AI-assisted large scale refactors

Look at the open pull requests for examples of AI-assisted refactors.

The example we implemented was a refactor of test case names to a more verbose style. This isn't to express a particular preference on test function naming but it merely represents real refactor requested by a client that would not be possible to automate without LMs.

To run the refactors yourself you can do:

# Set up ollama runnning in another terminal window if necessary e.g.,
# ollama run llama3

# Defaults to using Ollama with llama3
./gradlew lintFix --continue

# Configuring Ollama
./gradlew lintFix --continue -Dcom.duckduckgo.lint.model=ollama -Dcom.duckduckgo.lint.ollama.baseurl=BASE_URL -Dcom.duckduckgo.lint.ollama.modelname=llama3

# Use Open AI
./gradlew lintFix --continue -Dcom.duckduckgo.lint.model=openai -Dcom.duckduckgo.lint.openai.key=MY_API_KEY -Dcom.duckduckgo.lint.openai.model=gpt-4o

This performs the entire refactor over a large set of modules.

If you want to just try one module then do

./gradlew :autofill-impl:lintFix

To add your own models and integrations, look at com/duckduckgo/lint/chatmodel/ChatModels.kt in the repo and refer to the langchain4j documentation here

After you've generated the diff, you can run ./gradlew compileDebugUnitTestKotlin to check.

Formatting is run via ./gradlew formatKotlin

Where is the code that generates the PR?

Look at the lint rule in TestFunctionNameDetector.kt

Android/lint-rules/src/main/java/com/duckduckgo/lint/TestFunctionNameDetector.kt

Line 139 in 3718201

ChatModels.chatModel.generate(prompt, UserMessage.from(method.sourcePsi!!.text)).content().text()

lint-rules/src/main/java/com/duckduckgo/lint/chatmodel/ChatModels.kt

Look at the chat model setup in ChatModel.kt

Android/lint-rules/src/main/java/com/duckduckgo/lint/chatmodel/ChatModels.kt

Line 43 in 3718201

OllamaChatModel.builder().modelName(System.getProperty("com.duckduckgo.lint.ollama.modelname", "llama3")).temperature(0.0).seed(0)

License

DuckDuckGo android is distributed under the Apache 2.0 license.