Use the IntelliJ community to get AST

I am creating a small Java code analysis tool and wondering if I can use the awesome IntelliJ compiler to get AST projects for Java?

IntelliJ has an open sourced community publishing house a few years ago under the Apache 2 license. Can the project be used as a library in a standalone Java project (instead of a plugin for a full IDE) to parse Java projects? The Git repository is quite large and I appreciate any hints or links to start with.

(I already read about Eclipse JDT , but making my own mini ANTLR Java parser was much easier than getting the Eclipse JDT to work for me. But it would be great if I could use a more complex, always up to date version of Java AST for my project. So my hopes are in the IntelliJ compiler.)