Hi Everyone, I am trying to modernize the Apache Grails code base since we're using Groovy 4.0.26 & Java 17 as a baseline. In our gradle project, we have the language level set to Java 17. We also have java files in our groovy source sets. After updating our java files to use more modern features, I'm getting a failure when running groovydoc. An example of this is:
> Task :grails-core:groovydoc Attempting to ignore error parsing Java source file: org/grails/plugins/DefaultGrailsPlugin.java Consider reporting the error to the Groovy project: https://issues.apache.org/jira/browse/GROOVY ... or directly to the JavaParser project: https://github.com/javaparser/javaparser/issues Error: (line 181,col 13) Use of patterns with instanceof is not supported. Pay attention that this feature is supported starting from 'JAVA_14' language level. If you need that feature the language level must be configured in the configuration before parsing the source files. The cause for this error is groovydoc uses the JavaParser library and its default language level is set to a lower value (it currently defaults to the popular language level which is Java 11). If I was using this library directly, I would set this option to force a specific java version: StaticJavaParser.getConfiguration().setLanguageLevel(ParserConfiguration.LanguageLevel.JAVA_17) I searched https://github.com/apache/groovy/blob/master/subprojects/groovy-groovydoc and I don't see a level being set. I also don't see any mention of this in jira. Finally, I don't see any documented parameters where this can be set: https://groovy-lang.org/groovydoc.html Is anyone aware of how to set this language level for the existing groovydoc task? Would an argument to groovydoc be the preferred way to set this language level? If such a flag were added, I could request a gradle upstream change to set this flag based on the project language level. Has this issue been raised before? I'm happy to submit a pull request to make this change, but thought I'd check here first on how best to add this support or if I've missed some other way to set the language level. -James
