/**
* Parse the specified files returning a list of abstract syntax trees.
*
* @throws java.io.IOException TODO
* @return a list of abstract syntax trees
*/
public Iterable<? extends CompilationUnitTree> parse() throws IOException {
try {
prepareCompiler();
List<JCCompilationUnit> units = compiler.parseFiles(fileObjects);
for (JCCompilationUnit unit : units) {
JavaFileObject file = unit.getSourceFile();
if (notYetEntered.containsKey(file)) notYetEntered.put(file, unit);
}
return units;
} finally {
parsed = true;
if (compiler != null && compiler.log != null) compiler.log.flush();
}
}
private void prepareCompiler() throws IOException {
if (used.getAndSet(true)) {
if (compiler == null) throw new IllegalStateException();
} else {
initContext();
compilerMain.setOptions(Options.instance(context));
compilerMain.filenames = new LinkedHashSet<File>();
Collection<File> filenames = compilerMain.processArgs(CommandLine.parse(args), classNames);
if (!filenames.isEmpty())
throw new IllegalArgumentException("Malformed arguments " + toString(filenames, " "));
compiler = JavaCompiler.instance(context);
compiler.keepComments = true;
compiler.genEndPos = true;
// NOTE: this value will be updated after annotation processing
compiler.initProcessAnnotations(processors);
notYetEntered = new HashMap<JavaFileObject, JCCompilationUnit>();
for (JavaFileObject file : fileObjects) notYetEntered.put(file, null);
genList = new ListBuffer<Env<AttrContext>>();
// endContext will be called when all classes have been generated
// TODO: should handle the case after each phase if errors have occurred
args = null;
classNames = null;
}
}