public ModuleSymbol findSingleModule() {
try {
JavaFileObject src_fo = getModuleInfoFromLocation(StandardLocation.SOURCE_PATH, Kind.SOURCE);
JavaFileObject class_fo =
getModuleInfoFromLocation(StandardLocation.CLASS_OUTPUT, Kind.CLASS);
JavaFileObject fo =
(src_fo == null)
? class_fo
: (class_fo == null) ? src_fo : classFinder.preferredFileObject(src_fo, class_fo);
ModuleSymbol msym;
if (fo == null) {
msym = syms.unnamedModule;
} else {
switch (fo.getKind()) {
case SOURCE:
if (!inFindSingleModule) {
try {
inFindSingleModule = true;
// Note: the following will trigger a re-entrant call to Modules.enter
msym = sourceFileCompleter.complete(fo);
msym.module_info.classfile = fo;
} finally {
inFindSingleModule = false;
}
} else {
// the module-info.java does not contain a module declaration,
// avoid infinite recursion:
msym = syms.unnamedModule;
}
break;
case CLASS:
Name name;
try {
name = names.fromString(readModuleName(fo));
} catch (BadClassFile | IOException ex) {
// fillIn will report proper errors:
name = names.error;
}
msym = syms.enterModule(name);
msym.module_info.classfile = fo;
msym.completer = Completer.NULL_COMPLETER;
classFinder.fillIn(msym.module_info);
break;
default:
Assert.error();
msym = syms.unnamedModule;
break;
}
}
msym.classLocation = StandardLocation.CLASS_OUTPUT;
return msym;
} catch (IOException e) {
throw new Error(e); // FIXME
}
}
/** Construct a new module finder. */
protected ModuleFinder(Context context) {
context.put(moduleFinderKey, this);
names = Names.instance(context);
syms = Symtab.instance(context);
fileManager = context.get(JavaFileManager.class);
log = Log.instance(context);
classFinder = ClassFinder.instance(context);
diags = JCDiagnostic.Factory.instance(context);
}
private List<ModuleSymbol> scanModulePath(ModuleSymbol toFind) {
ListBuffer<ModuleSymbol> results = new ListBuffer<>();
Map<Name, Location> namesInSet = new HashMap<>();
while (moduleLocationIterator.hasNext()) {
Set<Location> locns = (moduleLocationIterator.next());
namesInSet.clear();
for (Location l : locns) {
try {
Name n = names.fromString(fileManager.inferModuleName(l));
if (namesInSet.put(n, l) == null) {
ModuleSymbol msym = syms.enterModule(n);
if (msym.sourceLocation != null || msym.classLocation != null) {
// module has already been found, so ignore this instance
continue;
}
if (moduleLocationIterator.outer == StandardLocation.MODULE_SOURCE_PATH) {
msym.sourceLocation = l;
if (fileManager.hasLocation(StandardLocation.CLASS_OUTPUT)) {
msym.classLocation =
fileManager.getLocationForModule(
StandardLocation.CLASS_OUTPUT, msym.name.toString());
}
} else {
msym.classLocation = l;
}
if (moduleLocationIterator.outer == StandardLocation.SYSTEM_MODULES
|| moduleLocationIterator.outer == StandardLocation.UPGRADE_MODULE_PATH) {
msym.flags_field |= Flags.SYSTEM_MODULE;
}
if (toFind == msym || toFind == null) {
// Note: cannot return msym directly, because we must finish
// processing this set first
results.add(msym);
}
} else {
log.error(
Errors.DuplicateModuleOnPath(getDescription(moduleLocationIterator.outer), n));
}
} catch (IOException e) {
// skip location for now? log error?
}
}
if (toFind != null && results.nonEmpty()) return results.toList();
}
return results.toList();
}
public ModuleSymbol findModule(Name name) {
return findModule(syms.enterModule(name));
}