Overriding line number in generated Java source

Question

Is there any way to override the line numbers in Java (e.g., by using some kind of preprocessor directive)?

I am "compiling" a high-level language, down to Java byte code using Janino. I need compiler errors to report the line from the original file, not the generated Java code.

C# has the #line directive, and I've successfully exploited it to map line numbers from a source file to the compiled result. I need the same for Java.

Thanks!

Answer 1

I've never seen it used for other than JSP, but JSR-45 was designed to be used for this purpose for any source language. The process involves creating a second file in a special format ("SMAP") that maps line numbers in the original source to line numbers in the generated Java source code.