* @return A new FIS (or null on error)
*/
private static FIS createFromLexer(FclLexer lexer, boolean verbose) throws RecognitionException {
FIS fis = new FIS();
CommonTokenStream tokens = new CommonTokenStream(lexer);
FclParser parser = new FclParser(tokens);
// FclParser.fcl_return root = parser.fcl();
FclParser.main_return root;
root = parser.main();
Tree parseTree = (Tree) root.getTree();
// Error loading file?
if( parseTree == null ) {
System.err.println("Can't create FIS");