/**
* Provides the set of all concrete classes that subclass/implement a given class/interface.
*
* @param s The name of a class or interface.
* @return The set of all concrete classes that subclass/implement (directly or transitively) the
* class/interface named s, if it exists in the class hierarchy, and null otherwise.
*/
public Set<String> getConcreteSubclasses(final String s) {
if (clintToAllConcreteSubs == null) {
if (clintToKind == null) build();
missingClints = new HashSet<String>();
Set<String> missingSuperclasses = new HashSet<String>();
Set<String> missingSuperInterfs = new HashSet<String>();
// Map from each concrete class in scope to set containing
// itself and its (direct and transitive) superclasses and
// its implemented interfaces (not necessarily in scope).
Map<String, Set<String>> concreteClassToAllSups = new HashMap<String, Set<String>>();
clintToAllConcreteSubs = new HashMap<String, Set<String>>();
Set<String> emptyRdOnlySet = Collections.emptySet();
for (String c : clintToKind.keySet()) {
clintToAllConcreteSubs.put(c, emptyRdOnlySet);
if (clintToKind.get(c) != TypeKind.CONCRETE_CLASS) continue;
Set<String> clints = new ArraySet<String>(2);
clints.add(c); // every concrete class is a concrete successor to itself
boolean success1 = true;
boolean success2 = true;
String d = c;
while (true) {
success2 &= populateInterfaces(d, clints);
String superClass = classToDeclaredSuperclass.get(d);
if (superClass == null) {
if (!d.equals("java.lang.Object")) {
missingClints.add(d);
success1 = false;
}
break;
}
boolean added = clints.add(superClass);
assert (added);
d = superClass;
}
if (success1 && success2) {
concreteClassToAllSups.put(c, clints);
continue;
}
if (!success1) missingSuperclasses.add(c);
if (!success2) missingSuperInterfs.add(c);
}
if (!missingClints.isEmpty()) {
Messages.log(MISSING_TYPES);
for (String c : missingClints) Messages.log("\t" + c);
}
if (!missingSuperclasses.isEmpty()) {
Messages.log(MISSING_SUPERCLASSES);
for (String c : missingSuperclasses) Messages.log("\t" + c);
}
if (!missingSuperInterfs.isEmpty()) {
Messages.log(MISSING_SUPERINTERFS);
for (String c : missingSuperInterfs) Messages.log("\t" + c);
}
for (String c : concreteClassToAllSups.keySet()) {
Set<String> sups = concreteClassToAllSups.get(c);
for (String d : sups) {
Set<String> subs = clintToAllConcreteSubs.get(d);
if (subs == null || subs == emptyRdOnlySet) {
subs = new ArraySet<String>(2);
clintToAllConcreteSubs.put(d, subs);
}
subs.add(c);
}
}
missingClints.clear();
}
return clintToAllConcreteSubs.get(s);
}
// builds maps clintToKind, classToDeclaredSuperclass, and clintToDeclaredInterfaces
private void build() {
System.out.println("Starting to build class hierarchy; this may take a while ...");
Set<String> dynLoadedTypes = null;
if (Config.CHkind.equals("dynamic")) {
List<String> list = Program.g().getDynamicallyLoadedClasses();
dynLoadedTypes = new HashSet<String>(list.size());
dynLoadedTypes.addAll(list);
}
Classpath cp = new Classpath();
cp.addToClasspath(System.getProperty("sun.boot.class.path"));
cp.addExtClasspath();
cp.addToClasspath(Config.userClassPathName);
List<ClasspathElement> cpeList = cp.getClasspathElements();
// logging info
List<Pair<String, String>> duplicateTypes = new ArrayList<Pair<String, String>>();
List<String> excludedTypes = new ArrayList<String>();
List<String> typesNotDynLoaded = new ArrayList<String>();
clintToKind = new HashMap<String, TypeKind>();
classToDeclaredSuperclass = new HashMap<String, String>();
clintToDeclaredInterfaces = new HashMap<String, Set<String>>();
for (ClasspathElement cpe : cpeList) {
for (String fileName : cpe.getEntries()) {
if (!fileName.endsWith(".class")) continue;
String baseName = fileName.substring(0, fileName.length() - 6);
String typeName = baseName.replace('/', '.');
// ignore types excluded from scope
if (Config.isExcludedFromScope(typeName)) {
excludedTypes.add(typeName);
continue;
}
// ignore duplicate types in classpath
if (clintToKind.containsKey(typeName)) {
duplicateTypes.add(new Pair<String, String>(typeName, cpe.toString()));
continue;
}
if (dynLoadedTypes != null && !dynLoadedTypes.contains(typeName)) {
typesNotDynLoaded.add(typeName);
continue;
}
InputStream is = cpe.getResourceAsStream(fileName);
assert (is != null);
DataInputStream in = new DataInputStream(is);
if (Config.verbose >= 2) Messages.log("Processing class file %s from %s", fileName, cpe);
processClassFile(in, typeName);
}
}
if (Config.verbose >= 2) {
if (!duplicateTypes.isEmpty()) {
Messages.log(IGNORED_DUPLICATE_TYPES);
for (Pair<String, String> p : duplicateTypes) Messages.log("\t%s, %s", p.val0, p.val1);
}
if (!excludedTypes.isEmpty()) {
Messages.log(EXCLUDED_TYPES_IN_CHORD);
for (String s : excludedTypes) Messages.log("\t" + s);
}
if (!typesNotDynLoaded.isEmpty()) {
Messages.log(EXCLUDED_TYPES_NOT_DYN_LOADED);
for (String s : typesNotDynLoaded) Messages.log("\t" + s);
}
}
System.out.println("Finished building class hierarchy.");
}