private static List<FunctionDescriptor> getSuperFunctionsForMethod(
@NotNull PsiMethodWrapper method,
@NotNull BindingTrace trace,
@NotNull ClassDescriptor containingClass) {
List<FunctionDescriptor> superFunctions = Lists.newArrayList();
Map<ClassDescriptor, JetType> superclassToSupertype =
getSuperclassToSupertypeMap(containingClass);
Multimap<FqName, Pair<FunctionDescriptor, PsiMethod>> superclassToFunctions =
getSuperclassToFunctionsMultimap(method, trace.getBindingContext(), containingClass);
for (HierarchicalMethodSignature superSignature :
method.getPsiMethod().getHierarchicalMethodSignature().getSuperSignatures()) {
PsiMethod superMethod = superSignature.getMethod();
PsiClass psiClass = superMethod.getContainingClass();
assert psiClass != null;
String classFqNameString = psiClass.getQualifiedName();
assert classFqNameString != null;
FqName classFqName = new FqName(classFqNameString);
if (!JavaToKotlinClassMap.getInstance().mapPlatformClass(classFqName).isEmpty()) {
for (FunctionDescriptor superFun :
JavaToKotlinMethodMap.INSTANCE.getFunctions(superMethod, containingClass)) {
superFunctions.add(substituteSuperFunction(superclassToSupertype, superFun));
}
continue;
}
DeclarationDescriptor superFun =
superMethod instanceof JetClsMethod
? trace.get(
BindingContext.DECLARATION_TO_DESCRIPTOR,
((JetClsMethod) superMethod).getOrigin())
: findSuperFunction(superclassToFunctions.get(classFqName), superMethod);
if (superFun == null) {
reportCantFindSuperFunction(method);
continue;
}
assert superFun instanceof FunctionDescriptor : superFun.getClass().getName();
superFunctions.add(
substituteSuperFunction(superclassToSupertype, (FunctionDescriptor) superFun));
}
// sorting for diagnostic stability
Collections.sort(
superFunctions,
new Comparator<FunctionDescriptor>() {
@Override
public int compare(FunctionDescriptor fun1, FunctionDescriptor fun2) {
FqNameUnsafe fqName1 = getFQName(fun1.getContainingDeclaration());
FqNameUnsafe fqName2 = getFQName(fun2.getContainingDeclaration());
return fqName1.getFqName().compareTo(fqName2.getFqName());
}
});
return superFunctions;
}
private static void putInMap(
PsiClass aClass,
Map<MethodSignature, HierarchicalMethodSignature> result,
Map<MethodSignature, HierarchicalMethodSignatureImpl> map,
HierarchicalMethodSignature hierarchicalMethodSignature,
MethodSignature signature) {
if (!PsiUtil.isAccessible(
aClass.getProject(), hierarchicalMethodSignature.getMethod(), aClass, aClass)) return;
HierarchicalMethodSignatureImpl existing = map.get(signature);
if (existing == null) {
HierarchicalMethodSignatureImpl copy = copy(hierarchicalMethodSignature);
LOG.assertTrue(copy.getMethod().isValid());
map.put(signature, copy);
} else if (isReturnTypeIsMoreSpecificThan(hierarchicalMethodSignature, existing)
&& isSuperMethod(aClass, hierarchicalMethodSignature, existing)) {
HierarchicalMethodSignatureImpl newSuper = copy(hierarchicalMethodSignature);
mergeSupers(newSuper, existing);
LOG.assertTrue(newSuper.getMethod().isValid());
map.put(signature, newSuper);
} else if (isSuperMethod(aClass, existing, hierarchicalMethodSignature)) {
mergeSupers(existing, hierarchicalMethodSignature);
}
// just drop an invalid method declaration there - to highlight accordingly
else if (!result.containsKey(signature)) {
LOG.assertTrue(hierarchicalMethodSignature.getMethod().isValid());
result.put(signature, hierarchicalMethodSignature);
}
}
private static boolean isReturnTypeIsMoreSpecificThan(
@NotNull HierarchicalMethodSignature thisSig, @NotNull HierarchicalMethodSignature thatSig) {
PsiType thisRet = thisSig.getSubstitutor().substitute(thisSig.getMethod().getReturnType());
PsiType thatRet = thatSig.getSubstitutor().substitute(thatSig.getMethod().getReturnType());
return thatRet != null
&& thisRet != null
&& !thatRet.equals(thisRet)
&& TypeConversionUtil.isAssignable(thatRet, thisRet, false);
}
private static boolean isInheritFromObject(@NotNull PsiMethod method) {
List<HierarchicalMethodSignature> superSignatures =
method.getHierarchicalMethodSignature().getSuperSignatures();
for (HierarchicalMethodSignature s : superSignatures) {
PsiClass containingClass = s.getMethod().getContainingClass();
String qualifiedName = containingClass != null ? containingClass.getQualifiedName() : "";
if (qualifiedName != null && qualifiedName.equals(JAVA_LANG_OBJECT)) {
return true;
}
}
return false;
}
private static boolean normalCase(@NotNull PsiMethod method) {
int counter = 0;
for (HierarchicalMethodSignature s :
method.getHierarchicalMethodSignature().getSuperSignatures()) {
PsiClass containingClass = s.getMethod().getContainingClass();
String qualifiedName = containingClass != null ? containingClass.getQualifiedName() : "";
if (qualifiedName != null && !qualifiedName.equals(JAVA_LANG_OBJECT)) {
counter++;
}
}
return counter > 0;
}
private static HierarchicalMethodSignatureImpl copy(HierarchicalMethodSignature hi) {
HierarchicalMethodSignatureImpl hierarchicalMethodSignature =
new HierarchicalMethodSignatureImpl(hi);
for (HierarchicalMethodSignature his : hi.getSuperSignatures()) {
hierarchicalMethodSignature.addSuperSignature(copy(his));
}
return hierarchicalMethodSignature;
}
private static boolean isSuperMethod(
PsiClass aClass,
HierarchicalMethodSignature hierarchicalMethodSignature,
HierarchicalMethodSignature superSignatureHierarchical) {
PsiMethod superMethod = superSignatureHierarchical.getMethod();
PsiClass superClass = superMethod.getContainingClass();
PsiClass containingClass = hierarchicalMethodSignature.getMethod().getContainingClass();
if (!superMethod.isConstructor()) {
if (!aClass.equals(superClass)) {
if (PsiUtil.isAccessible(aClass.getProject(), superMethod, aClass, aClass)) {
if (MethodSignatureUtil.isSubsignature(
superSignatureHierarchical, hierarchicalMethodSignature)) {
if (superClass != null) {
if (superClass.isInterface()
|| CommonClassNames.JAVA_LANG_OBJECT.equals(superClass.getQualifiedName())) {
if (superMethod.hasModifierProperty(PsiModifier.DEFAULT)
|| hierarchicalMethodSignature
.getMethod()
.hasModifierProperty(PsiModifier.DEFAULT)) {
return !InheritanceUtil.isInheritorOrSelf(superClass, containingClass, true);
}
return true;
}
if (containingClass != null) {
if (containingClass.isInterface()) {
return false;
}
if (!aClass.isInterface()
&& !InheritanceUtil.isInheritorOrSelf(superClass, containingClass, true)) {
return true;
}
}
}
}
}
}
}
return false;
}
@Nullable
static List<MethodSignature> findFunctionCandidates(PsiClass psiClass) {
if (psiClass instanceof PsiAnonymousClass) {
psiClass = PsiUtil.resolveClassInType(((PsiAnonymousClass) psiClass).getBaseClassType());
}
if (psiClass != null && psiClass.isInterface()) {
final List<MethodSignature> methods = new ArrayList<MethodSignature>();
final Collection<HierarchicalMethodSignature> visibleSignatures =
psiClass.getVisibleSignatures();
for (HierarchicalMethodSignature signature : visibleSignatures) {
final PsiMethod psiMethod = signature.getMethod();
if (!psiMethod.hasModifierProperty(PsiModifier.ABSTRACT)) continue;
if (psiMethod.hasModifierProperty(PsiModifier.STATIC)) continue;
if (!overridesPublicObjectMethod(psiMethod)) {
methods.add(signature);
}
}
return hasSubsignature(methods);
}
return null;
}
// uses hierarchy signature tree if available, traverses class structure by itself otherwise
public static boolean processDirectSuperMethodsSmart(
@NotNull PsiMethod method, @NotNull Processor<PsiMethod> superMethodProcessor) {
// boolean old = PsiSuperMethodUtil.isSuperMethod(method, superMethod);
PsiClass aClass = method.getContainingClass();
if (aClass == null) return false;
if (!canHaveSuperMethod(method, true, false)) return false;
Map<MethodSignature, HierarchicalMethodSignature> cachedMap =
SIGNATURES_KEY.getCachedValueOrNull(aClass);
if (cachedMap != null) {
HierarchicalMethodSignature signature =
cachedMap.get(method.getSignature(PsiSubstitutor.EMPTY));
if (signature != null) {
List<HierarchicalMethodSignature> superSignatures = signature.getSuperSignatures();
for (HierarchicalMethodSignature superSignature : superSignatures) {
if (!superMethodProcessor.process(superSignature.getMethod())) return false;
}
return true;
}
}
PsiClassType[] directSupers = aClass.getSuperTypes();
for (PsiClassType directSuper : directSupers) {
PsiClassType.ClassResolveResult resolveResult = directSuper.resolveGenerics();
if (resolveResult.getSubstitutor() != PsiSubstitutor.EMPTY) {
// generics
break;
}
PsiClass directSuperClass = resolveResult.getElement();
if (directSuperClass == null) continue;
PsiMethod[] candidates = directSuperClass.findMethodsBySignature(method, false);
for (PsiMethod candidate : candidates) {
if (PsiUtil.canBeOverriden(candidate)) {
if (!superMethodProcessor.process(candidate)) return false;
}
}
return true;
}
List<HierarchicalMethodSignature> superSignatures =
method.getHierarchicalMethodSignature().getSuperSignatures();
for (HierarchicalMethodSignature superSignature : superSignatures) {
if (!superMethodProcessor.process(superSignature.getMethod())) return false;
}
return true;
}
private static void mergeSupers(
final HierarchicalMethodSignatureImpl existing,
final HierarchicalMethodSignature superSignature) {
for (HierarchicalMethodSignature existingSuper : existing.getSuperSignatures()) {
if (existingSuper.getMethod() == superSignature.getMethod()) {
for (HierarchicalMethodSignature signature : superSignature.getSuperSignatures()) {
mergeSupers((HierarchicalMethodSignatureImpl) existingSuper, signature);
}
return;
}
}
if (existing.getMethod() == superSignature.getMethod()) {
List<HierarchicalMethodSignature> existingSupers = existing.getSuperSignatures();
for (HierarchicalMethodSignature supers : superSignature.getSuperSignatures()) {
if (!existingSupers.contains(supers)) existing.addSuperSignature(copy(supers));
}
} else {
HierarchicalMethodSignatureImpl copy = copy(superSignature);
existing.addSuperSignature(copy);
}
}
// uses hierarchy signature tree if available, traverses class structure by itself otherwise
public static boolean isSuperMethodSmart(
@NotNull PsiMethod method, @NotNull PsiMethod superMethod) {
// boolean old = PsiSuperMethodUtil.isSuperMethod(method, superMethod);
if (method == superMethod) return false;
PsiClass aClass = method.getContainingClass();
PsiClass superClass = superMethod.getContainingClass();
if (aClass == null || superClass == null || superClass == aClass) return false;
if (!canHaveSuperMethod(method, true, false)) return false;
PsiMethod[] superMethods = null;
Map<MethodSignature, HierarchicalMethodSignature> cachedMap =
SIGNATURES_KEY.getCachedValueOrNull(aClass);
if (cachedMap != null) {
HierarchicalMethodSignature signature =
cachedMap.get(method.getSignature(PsiSubstitutor.EMPTY));
if (signature != null) {
superMethods =
MethodSignatureUtil.convertMethodSignaturesToMethods(signature.getSuperSignatures());
}
}
if (superMethods == null) {
PsiClassType[] directSupers = aClass.getSuperTypes();
List<PsiMethod> found = null;
boolean canceled = false;
for (PsiClassType directSuper : directSupers) {
PsiClassType.ClassResolveResult resolveResult = directSuper.resolveGenerics();
if (resolveResult.getSubstitutor() != PsiSubstitutor.EMPTY) {
// generics
canceled = true;
break;
}
PsiClass directSuperClass = resolveResult.getElement();
if (directSuperClass == null) continue;
PsiMethod[] candidates = directSuperClass.findMethodsBySignature(method, false);
if (candidates.length != 0) {
if (found == null) found = new ArrayList<PsiMethod>();
for (PsiMethod candidate : candidates) {
if (PsiUtil.canBeOverriden(candidate)) found.add(candidate);
}
}
}
superMethods =
canceled
? null
: found == null ? PsiMethod.EMPTY_ARRAY : found.toArray(new PsiMethod[found.size()]);
}
if (superMethods == null) {
superMethods =
MethodSignatureUtil.convertMethodSignaturesToMethods(
method.getHierarchicalMethodSignature().getSuperSignatures());
}
for (PsiMethod superCandidate : superMethods) {
if (superMethod.equals(superCandidate) || isSuperMethodSmart(superCandidate, superMethod))
return true;
}
return false;
}
private static Map<MethodSignature, HierarchicalMethodSignature> buildMethodHierarchy(
PsiClass aClass,
PsiSubstitutor substitutor,
final boolean includePrivates,
final Set<PsiClass> visited,
boolean isInRawContext) {
Map<MethodSignature, HierarchicalMethodSignature> result =
new LinkedHashMap<MethodSignature, HierarchicalMethodSignature>();
final Map<MethodSignature, List<PsiMethod>> sameParameterErasureMethods =
new THashMap<MethodSignature, List<PsiMethod>>(
MethodSignatureUtil.METHOD_PARAMETERS_ERASURE_EQUALITY);
Map<MethodSignature, HierarchicalMethodSignatureImpl> map =
new THashMap<MethodSignature, HierarchicalMethodSignatureImpl>(
new TObjectHashingStrategy<MethodSignature>() {
@Override
public int computeHashCode(MethodSignature signature) {
return MethodSignatureUtil.METHOD_PARAMETERS_ERASURE_EQUALITY.computeHashCode(
signature);
}
@Override
public boolean equals(MethodSignature o1, MethodSignature o2) {
if (!MethodSignatureUtil.METHOD_PARAMETERS_ERASURE_EQUALITY.equals(o1, o2))
return false;
List<PsiMethod> list = sameParameterErasureMethods.get(o1);
boolean toCheckReturnType = list != null && list.size() > 1;
if (!toCheckReturnType) return true;
PsiType returnType1 =
((MethodSignatureBackedByPsiMethod) o1).getMethod().getReturnType();
PsiType returnType2 =
((MethodSignatureBackedByPsiMethod) o2).getMethod().getReturnType();
if (returnType1 == null && returnType2 == null) return true;
if (returnType1 == null || returnType2 == null) return false;
PsiType erasure1 =
TypeConversionUtil.erasure(o1.getSubstitutor().substitute(returnType1));
PsiType erasure2 =
TypeConversionUtil.erasure(o2.getSubstitutor().substitute(returnType2));
return erasure1.equals(erasure2);
}
});
for (PsiMethod method : aClass.getMethods()) {
if (!method.isValid()) {
throw new PsiInvalidElementAccessException(
method, "class.valid=" + aClass.isValid() + "; name=" + method.getName());
}
if (!includePrivates && method.hasModifierProperty(PsiModifier.PRIVATE)) continue;
final MethodSignatureBackedByPsiMethod signature =
MethodSignatureBackedByPsiMethod.create(method, substitutor, isInRawContext);
HierarchicalMethodSignatureImpl newH = new HierarchicalMethodSignatureImpl(signature);
List<PsiMethod> list = sameParameterErasureMethods.get(signature);
if (list == null) {
list = new SmartList<PsiMethod>();
sameParameterErasureMethods.put(signature, list);
}
list.add(method);
LOG.assertTrue(newH.getMethod().isValid());
result.put(signature, newH);
map.put(signature, newH);
}
for (PsiClassType superType : aClass.getSuperTypes()) {
PsiClassType.ClassResolveResult superTypeResolveResult = superType.resolveGenerics();
PsiClass superClass = superTypeResolveResult.getElement();
if (superClass == null) continue;
if (!visited.add(superClass)) continue; // cyclic inheritance
final PsiSubstitutor superSubstitutor = superTypeResolveResult.getSubstitutor();
PsiSubstitutor finalSubstitutor =
obtainFinalSubstitutor(superClass, superSubstitutor, substitutor, isInRawContext);
final boolean isInRawContextSuper =
(isInRawContext || PsiUtil.isRawSubstitutor(superClass, superSubstitutor))
&& superClass.getTypeParameters().length != 0;
Map<MethodSignature, HierarchicalMethodSignature> superResult =
buildMethodHierarchy(superClass, finalSubstitutor, false, visited, isInRawContextSuper);
visited.remove(superClass);
List<Pair<MethodSignature, HierarchicalMethodSignature>> flattened =
new ArrayList<Pair<MethodSignature, HierarchicalMethodSignature>>();
for (Map.Entry<MethodSignature, HierarchicalMethodSignature> entry : superResult.entrySet()) {
HierarchicalMethodSignature hms = entry.getValue();
MethodSignature signature = entry.getKey();
PsiClass containingClass = hms.getMethod().getContainingClass();
List<HierarchicalMethodSignature> supers =
new ArrayList<HierarchicalMethodSignature>(hms.getSuperSignatures());
for (HierarchicalMethodSignature aSuper : supers) {
PsiClass superContainingClass = aSuper.getMethod().getContainingClass();
if (containingClass != null
&& superContainingClass != null
&& !containingClass.isInheritor(superContainingClass, true)) {
// methods must be inherited from unrelated classes, so flatten hierarchy here
// class C implements SAM1, SAM2 { void methodimpl() {} }
// hms.getSuperSignatures().remove(aSuper);
flattened.add(
new Pair<MethodSignature, HierarchicalMethodSignature>(signature, aSuper));
}
}
putInMap(aClass, result, map, hms, signature);
}
for (Pair<MethodSignature, HierarchicalMethodSignature> pair : flattened) {
putInMap(aClass, result, map, pair.second, pair.first);
}
}
for (Map.Entry<MethodSignature, HierarchicalMethodSignatureImpl> entry : map.entrySet()) {
HierarchicalMethodSignatureImpl hierarchicalMethodSignature = entry.getValue();
MethodSignature methodSignature = entry.getKey();
if (result.get(methodSignature) == null
&& PsiUtil.isAccessible(
aClass.getProject(), hierarchicalMethodSignature.getMethod(), aClass, aClass)) {
LOG.assertTrue(hierarchicalMethodSignature.getMethod().isValid());
result.put(methodSignature, hierarchicalMethodSignature);
}
}
return result;
}