palantir / palantir/palantir-java-format

Support for module import

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Dominant language
Java
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Avg merge
1d 3h
Merged PRs (30d)
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Description

import module java.base; is now out of preview and should be supported by this formatter. Instead it fails with

LINE_UNDEFINED removeUnusedImports(java.lang.IllegalArgumentException) object of type com.sun.tools.javac.tree.JCTree$JCModuleImport is not an instance of com.sun.tools.javac.tree.JCTree$JCImport (...)

and

LINE_UNDEFINED palantir-java-format(com.palantir.javaformat.java.FormatterException) error: Expected ; after import (...)

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the formatter failures with import module java.base;, then trace how module imports are parsed and handled by unused-import removal. Done means the formatter accepts and formats this import without either reported exception.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
tooling
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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