Is it possible to use a bnf and jflex file in a standalone environment without it being a intellij plugin?

I've written a .bnf and .flex file for my language to be used in the IntelliJ plugin. Now I am hoping to use these same files for the compiler for my language. The generated code seems to be very tightly related to the IntelliJ codebase. Ideally, I'd want something that could just go source text -> jflex lexer -> bnf parser -> ast. Is there any way of achieving this?