Polyglot Classpath in Habanero Java Compiler

I’m trying to integrate the Habanero Java compiler into DrJava in a way that doesn’t require all the compiler classes to be present in the DrJava jar file. I want it to behave the same as javac, Mint, or NextGen.

In doing so, I noticed that Polyglot wasn’t finding some of the Habanero Java runtime classes, and I suspected that the Polyglot classpath wasn’t set up correctly. I was always getting a [cci lang=”java”]polyglot.util.InternalCompilerError[/cci], [cci lang=”java”]”Cannot find class “hj.lang.Runtime”[/cci].

After looking through the Polyglot, Soot and Habanero Java sources, I inserted a [cci lang=”java”]System.out.println[/cci] call in Polyglot’s [cci lang=”java”]LoadedClassesResolver[/cci], and my suspicion was confirmed: The Polyglot classpath doesn’t have the dynamically loaded jar files on it. When I hardcoded the classpath in [cci lang=”java”]LoadedClassesResolver[/cci] to be the required path, I was able to compile Habanero Java files within DrJava.

When we invoke the Habanero Java compiler from DrJava using [cci lang=”java”]soot.Main.mainEntry[/cci], however, we pass the entire classpath using the -cp option
([cci lang=”java”]testCommand[4][/cci] and [cci lang=”java”]testCommand[4][/cci] in HjCompiler.java, lines 263 and

I think the Habanero Java developers should just be able to pass that classpath to Polyglot as well. It
looks like the [cci lang=”java”]initExtInfo()[/cci] method in HjToJimple.java would be the
right place to set
[cci lang=”java”]options.classpath[/cci].

I haven’t confirmed this yet, because building Habanero Java is probably more involved than just compiling Polyglot.


About Mathias

Software development engineer. Principal developer of DrJava. Recent Ph.D. graduate from the Department of Computer Science at Rice University.
This entry was posted in DrJava. Bookmark the permalink.

One Response to Polyglot Classpath in Habanero Java Compiler

  1. Pingback: Same Classpath in Front-End and Rest of Habanero Java Compiler | A Concurrent Affair

Leave a Reply