Add java source output directory settings for frege compiler

[yuxuanchiadm]

Still default compiles frege source code to java source code to bin folder. But add setting to project properties to change that directory so we can separate java source code file and java bytecode file.

[Ingo60]

For what reason?

[yuxuanchiadm]

One reason is for future possible frege m2e integration. It's common thing to do when using build tools like maven. Output the intermediate processed source files, resource files, etc. to like build/generated/main/java. Then compiles, archives those files to final result. In that way we can separate features of maven plugin. And combine them whatever we want. At now this just a enhancement we can do. I'll investigate this further.

[Ingo60]

I see. But the java Files are completely ephemeral and not needed anymore (except to look at the generated code, which is valuable at least for me, but could be helpful as well for someone getting java compilation errors because of wrong native definitions).

Hence I'd rather just make a check box "Keep Java Files?" in the Frege Settings.And if this is false, just remove the files in the builder after successful compilation.

[ToivoAdams]

Thank You for great work!

I want to call Frege generated code from Java.
First I created Maven project for both Frege and Java code.
Frege code compiles and I can see both generated java source and class files under /target directory.
But java won’t see generated code.

Usually solution is to add additional source directory to Maven pom.xml.
But Frege don’t create separate generated-source directory and can’t add whole target directory s source to Maven pom file.

Next I tried pure java project and again both Frege code and java code in the same project.
Now Frege puts generated files to /bin directory. But java won’t see them.

What I am doing wrong?
Is it possible to have both Frege and Java code in the same project?
Using separate projects probably solves problem.

Thank You
Toivo

[Ingo60]

The eclipse-plugin (without maven) currently allows for two scenarios:

• Frege using Java code
• Java using Frege code

You control this through the order in which the Builders work (in Project Properties):

The 2nd builder (in the picture, the Frege builder) will see the class files generated by the 1st builder (here: Java builder) in the bin/ directory.

For more complex scenarios, multiple projects are probably the way to go.
Still, it's only the class files that matter, not the generated sources.