Support Grammar-Kit

[jetbrains]

Support Grammar-Kit

[matklad]

There's https://github.com/hurricup/gradle-grammar-kit-plugin now 🎉

[sjamesr]

@zolotov it would be nice to be able to run the GrammarKit parser generator as part of continuous integration (without having to check in the generated files). Apparently there are already plugins to use JFlex from Gradle, so that could be outside the scope of this plugin.

[matklad]

Here is how we execute Jflex and Grammar Kit as a part of build of intellij-rust.

Unfortunately Grammar Kit is not published on maven, so we have to commit grammar-kit.jar to the repository.

An important peculiarity is that Grammar Kit needs classes from IntelliJ platform, that's why we use compile classpath for the generate task.

[zolotov]

If I implemented it in plugin, you still needed to configure bnf and flex files. I don't think that it will be shorter than creating generate tasks on client's side.

[iviews-ja]

I see. For me it would be faster to use configure two files instead of googling and experimenting how to tell gradle to generate source code from the grammar and to tell jflex to generate the lexer code. As you can see I have no idea of gradle but love the plugin build automation :)
Close the issue if you think it should be solved by plugin authors...

[zolotov]

Ok, thanks. I'll think about it

[Turbo87]

I guess it would not be a bad idea to have support for Grammar-Kit in some plugin, but I don't think it should be this plugin. It's easy to use multiple plugins in Gradle and having a dedicated Grammar-Kit plugin sounds like a good idea also for use-cases outside of IntelliJ plugins.

[zolotov]

@sjamesr indeed, I still think that it could be part of some other plugin.

[mplushnikov]

+1 for this functionality.
I is very annoying to figure out how to setup multiple gradle task to generate Parser and Lexer classes

[jonnyzzz]

Running a grammar kit from gradle (maybe as additional plugin) looks good to make it easier to bootstrap a new plugin
+1