private CollectionLiteralAnnotationTerm startCollection(Tree.Term t) {
Unit unit = t.getUnit();
// Continue the visit to collect the elements
ProducedType iteratedType = unit.getIteratedType(parameter().getType());
TypeDeclaration declaration = iteratedType.getDeclaration();
LiteralAnnotationTerm factory;
if (unit.getStringDeclaration().equals(declaration)) {
factory = StringLiteralAnnotationTerm.FACTORY;
} else if (unit.getIntegerDeclaration().equals(declaration)) {
factory = IntegerLiteralAnnotationTerm.FACTORY;
} else if (unit.getCharacterDeclaration().equals(declaration)) {
factory = CharacterLiteralAnnotationTerm.FACTORY;
} else if (unit.getBooleanDeclaration().equals(declaration)) {
factory = BooleanLiteralAnnotationTerm.FACTORY;
} else if (unit.getFloatDeclaration().equals(declaration)) {
factory = FloatLiteralAnnotationTerm.FACTORY;
} else if (Decl.isEnumeratedTypeWithAnonCases(iteratedType)) {
factory = ObjectLiteralAnnotationTerm.FACTORY;
} else if (Decl.isAnnotationClass(declaration)) {
t.addError(
"compiler bug: iterables of annotation classes or annotation constructors not supported as literal "
+ (checkingDefaults ? "defaulted parameters" : "arguments"));
return null;
} else if (iteratedType.isSubtypeOf(
((TypeDeclaration) unit.getLanguageModuleDeclarationDeclaration("Declaration"))
.getType())) {
factory = DeclarationLiteralAnnotationTerm.FACTORY;
} else {
throw new RuntimeException();
}
CollectionLiteralAnnotationTerm result = this.elements;
this.elements = new CollectionLiteralAnnotationTerm(factory);
return result;
}
private List<ProducedType> getSupertypes(List<ProducedType> list) {
if (isWellDefined() && Util.addToSupertypes(list, this)) {
ProducedType extendedType = getExtendedType();
if (extendedType != null) {
extendedType.getSupertypes(list);
}
for (ProducedType dst : getSatisfiedTypes()) {
dst.getSupertypes(list);
}
ProducedType selfType = getSelfType();
if (selfType != null) {
if (!(selfType.getDeclaration()
instanceof TypeParameter)) { // TODO: is this really correct???
selfType.getSupertypes(list);
}
}
List<ProducedType> caseTypes = getCaseTypes();
if (caseTypes != null /*&& !getDeclaration().getCaseTypes().isEmpty()*/) {
for (ProducedType t : caseTypes) {
List<ProducedType> candidates = t.getSupertypes();
for (ProducedType st : candidates) {
boolean include = true;
for (ProducedType ct : getDeclaration().getCaseTypes()) {
if (!ct.isSubtypeOf(st)) {
include = false;
break;
}
}
if (include) {
Util.addToSupertypes(list, st);
}
}
}
}
}
return list;
}
private ProducedType getCommonSupertype(
final List<ProducedType> caseTypes,
TypeDeclaration dec,
final TypeDeclaration selfTypeToIgnore) {
// now try to construct a common produced
// type that is a common supertype by taking
// the type args and unioning them
List<ProducedType> args = new ArrayList<ProducedType>();
for (TypeParameter tp : dec.getTypeParameters()) {
List<ProducedType> list2 = new ArrayList<ProducedType>();
ProducedType result;
if (tp.isContravariant()) {
for (ProducedType pt : caseTypes) {
ProducedType st = pt.getSupertype(dec, selfTypeToIgnore);
if (st == null) {
return null;
}
addToIntersection(list2, st.getTypeArguments().get(tp));
}
IntersectionType it = new IntersectionType(getDeclaration().getUnit());
it.setSatisfiedTypes(list2);
result = it.canonicalize().getType();
} else {
for (ProducedType pt : caseTypes) {
ProducedType st = pt.getSupertype(dec, selfTypeToIgnore);
if (st == null) {
return null;
}
addToUnion(list2, st.getTypeArguments().get(tp));
}
UnionType ut = new UnionType(getDeclaration().getUnit());
ut.setCaseTypes(list2);
result = ut.getType();
}
args.add(result);
}
// check that the unioned type args
// satisfy the type constraints
for (int i = 0; i < args.size(); i++) {
TypeParameter tp = dec.getTypeParameters().get(i);
for (ProducedType ub : tp.getSatisfiedTypes()) {
if (!args.get(i).isSubtypeOf(ub)) {
return null;
}
}
}
// recurse to the qualifying type
ProducedType outerType;
if (dec.isMember()) {
TypeDeclaration outer = (TypeDeclaration) dec.getContainer();
List<ProducedType> list = new ArrayList<ProducedType>();
for (ProducedType pt : caseTypes) {
ProducedType st = pt.getQualifyingType().getSupertype(outer, null);
list.add(st);
}
outerType = getCommonSupertype(list, outer, null);
} else {
outerType = null;
}
// make the resulting type
ProducedType candidateResult = dec.getProducedType(outerType, args);
// check the the resulting type is *really*
// a subtype (take variance into account)
for (ProducedType pt : caseTypes) {
if (!pt.isSubtypeOf(candidateResult)) {
return null;
}
}
return candidateResult;
}
/** Search for the most-specialized supertype satisfying the given predicate. */
private ProducedType getSupertype(
final Criteria c, List<ProducedType> list, final TypeDeclaration ignoringSelfType) {
if (c.satisfies(getDeclaration())) {
return qualifiedByDeclaringType();
}
if (isWellDefined() && Util.addToSupertypes(list, this)) {
// search for the most-specific supertype
// for the given declaration
ProducedType result = null;
ProducedType extendedType = getInternalExtendedType();
if (extendedType != null) {
ProducedType possibleResult = extendedType.getSupertype(c, list, ignoringSelfType);
if (possibleResult != null) {
result = possibleResult;
}
}
for (ProducedType dst : getInternalSatisfiedTypes()) {
ProducedType possibleResult = dst.getSupertype(c, list, ignoringSelfType);
if (possibleResult != null
&& (result == null || possibleResult.isSubtypeOf(result, ignoringSelfType))) {
result = possibleResult;
}
}
if (!getDeclaration().equals(ignoringSelfType)) {
ProducedType selfType = getInternalSelfType();
if (selfType != null) {
ProducedType possibleResult = selfType.getSupertype(c, list, ignoringSelfType);
if (possibleResult != null
&& (result == null || possibleResult.isSubtypeOf(result, ignoringSelfType))) {
result = possibleResult;
}
}
}
final List<ProducedType> caseTypes = getInternalCaseTypes();
if (caseTypes != null && !caseTypes.isEmpty()) {
// first find a common superclass or superinterface
// declaration that satisfies the criteria, ignoring
// type arguments for now
Criteria c2 =
new Criteria() {
@Override
public boolean satisfies(TypeDeclaration type) {
if (c.satisfies(type)) {
for (ProducedType ct : caseTypes) {
if (ct.getSupertype(type, ignoringSelfType) == null) {
return false;
}
}
return true;
} else {
return false;
}
}
};
ProducedType stc = caseTypes.get(0).getSupertype(c2, list, ignoringSelfType);
if (stc != null) {
// we found the declaration, now try to construct a
// produced type that is a true common supertype
ProducedType candidateResult =
getCommonSupertype(caseTypes, stc.getDeclaration(), ignoringSelfType);
if (candidateResult != null
&& (result == null || candidateResult.isSubtypeOf(result, ignoringSelfType))) {
result = candidateResult;
}
}
}
return result;
} else {
return null;
}
}
/** Is this type a subtype of the given type? Ignore a certain self type constraint. */
public boolean isSubtypeOf(ProducedType type, TypeDeclaration selfTypeToIgnore) {
if (getDeclaration() instanceof BottomType) {
return true;
} else if (type.getDeclaration() instanceof BottomType) {
return false;
} else if (getDeclaration() instanceof UnionType) {
for (ProducedType ct : getInternalCaseTypes()) {
if (ct == null || !ct.isSubtypeOf(type, selfTypeToIgnore)) {
return false;
}
}
return true;
} else if (type.getDeclaration() instanceof UnionType) {
for (ProducedType ct : type.getInternalCaseTypes()) {
if (ct != null && isSubtypeOf(ct, selfTypeToIgnore)) {
return true;
}
}
return false;
} else if (type.getDeclaration() instanceof IntersectionType) {
for (ProducedType ct : type.getInternalSatisfiedTypes()) {
if (ct != null && !isSubtypeOf(ct, selfTypeToIgnore)) {
return false;
}
}
return true;
} else if (getDeclaration() instanceof IntersectionType) {
for (ProducedType ct : getInternalSatisfiedTypes()) {
if (ct == null || ct.isSubtypeOf(type, selfTypeToIgnore)) {
return true;
}
}
return false;
} else {
ProducedType st = getSupertype(type.getDeclaration(), selfTypeToIgnore);
if (st == null) {
return false;
} else {
ProducedType stqt = st.getQualifyingType();
ProducedType tqt = type.getQualifyingType();
if (stqt == null) {
if (tqt != null) {
// probably extraneous!
return false;
}
} else {
if (tqt == null) {
// probably extraneous!
return false;
} else {
// note that the qualifying type of the
// given type may be an invariant subtype
// of the type that declares the member
// type, as long as it doesn't refine the
// member type
TypeDeclaration totd = (TypeDeclaration) type.getDeclaration().getContainer();
ProducedType tqts = tqt.getSupertype(totd);
if (!stqt.isSubtypeOf(tqts)) {
return false;
}
}
}
for (TypeParameter p : type.getDeclaration().getTypeParameters()) {
ProducedType arg = st.getTypeArguments().get(p);
ProducedType otherArg = type.getTypeArguments().get(p);
if (arg == null || otherArg == null) {
/*throw new RuntimeException("Missing type argument for type parameter: " +
p.getName() + " of " +
type.getDeclaration().getName());*/
return false;
} else if (p.isCovariant()) {
if (!arg.isSubtypeOf(otherArg)) {
return false;
}
} else if (p.isContravariant()) {
if (!otherArg.isSubtypeOf(arg)) {
return false;
}
} else {
if (!arg.isExactly(otherArg)) {
return false;
}
}
}
return true;
}
}
}
/** Is this type a supertype of the given type? */
public boolean isSupertypeOf(ProducedType type) {
return type.isSubtypeOf(this);
}