typetools / typetools/checker-framework
Add @Contravariant as a complement to @Covariant
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enhancement
- Dominant language
- Java
- Stars
- 1.1k
- Forks
- 440
- Avg merge
- 1d 12h
- Merged PRs (30d)
- 134
Description
The Checker Framework supports a @Covariant annotation. It should support a @Contravariant annotation as well.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by locating the existing @Covariant annotation and its handling in the Checker Framework, then inspect any related tests or annotation-processing entry points. Done means the framework supports a corresponding @Contravariant annotation with behavior covered by tests, but the issue does not identify specific files or test cases.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java
- Domain
- compilers
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 30/100