if (diagnosticListener != null && context.get(DiagnosticListener.class) == null)
context.put(DiagnosticListener.class, diagnosticListener);
context.put(JavaFileManager.class, fileManager);
JavacTool.processOptions(context, fileManager, options);
Main compiler = new Main("ceyloncTask", context.get(Log.outKey));
return new CeyloncTaskImpl(compiler, options, context, classes, compilationUnits);
}