/**
* Split a path into its elements. If emptyPathDefault is not null, all empty elements in the
* path, including empty elements at either end of the path, will be replaced with the value of
* emptyPathDefault.
*
* @param path The path to be split
* @param emptyPathDefault The value to substitute for empty path elements, or null, to ignore
* empty path elements
* @return The elements of the path
*/
private static Iterable<File> getPathEntries(String path, File emptyPathDefault) {
ListBuffer<File> entries = new ListBuffer<File>();
int start = 0;
while (start <= path.length()) {
int sep = path.indexOf(File.pathSeparatorChar, start);
if (sep == -1) sep = path.length();
if (start < sep) entries.add(new File(path.substring(start, sep)));
else if (emptyPathDefault != null) entries.add(emptyPathDefault);
start = sep + 1;
}
return entries;
}
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();
}