Enabling Parrot Parser for Groovy Eclipse
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Assessment
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Newbie friendliness
- 30/100
- Issue type
- Feature
- Clarity
- Mostly clear
- Activity status
- Stale
- Tech stack
- groovy, java
- Domain
- build-system, tooling
Research direction
Start by tracing SpotlessTask and the Gradle configuration described in build.gradle, then reproduce the failure with Groovy 3+ syntax and the -Dgroovy.antlr4=true option. Done means a team can enable the Parrot Parser through build.gradle without manually adding a JVM option to each Gradle execution.
Written by the indexing model from the issue text.
Description
Since spotless depends on groovy-eclipse for groovy parsing/formatting, and since groovy-eclipse doesn't enable the parrot parser by default, Spotless fails when configured for groovy code that utilizes Groovy 3+ syntax.
After experiencing some pain with spotless + groovy, I stumbled upon #246 which led me to dig into groovy-eclipse. Turns out groovy-eclipse leaves the new antlr4 based Parrot Parser disabled by default, which means any newer Groovy 3 syntax that contains, for example, Java lambdas, blows up.
I can manually add -Dgroovy.antlr4=true to my Gradle execution and that gets it working for me locally, but there should be some way to configure this right within build.gradle? I'm trying to find a solution that is more amenable to a team environment.
In the past I've modified JavaExec tasks and the like to include forked JVM options. But there seems to be no way to do that for SpotlessTask.
Am I missing something obvious here?
- Dominant language
- Java
- Stars
- 5.7k
- Forks
- 560
- Avg merge
- 1d 13h
- Merged PRs (30d)
- 43
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.
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