static String fullPath(int offset, String prefix, Tree.ImportPath path) {
StringBuilder fullPath = new StringBuilder();
if (path != null) {
String pathString = formatPath(path.getIdentifiers());
fullPath.append(pathString).append('.');
int len = offset - path.getStartIndex() - prefix.length();
fullPath.setLength(len);
}
return fullPath.toString();
}
@Override
public void visit(Tree.CompilationUnit that) {
unit = that.getUnit();
super.visit(that);
HashSet<String> set = new HashSet<String>();
for (Tree.Import im : that.getImportList().getImports()) {
Tree.ImportPath ip = im.getImportPath();
if (ip != null) {
String mp = formatPath(ip.getIdentifiers());
if (!set.add(mp)) {
ip.addError("duplicate import: '" + mp + "'");
}
}
}
}