public String toString() {
@NonNls StringBuilder buffer = new StringBuilder();
final Set<Map.Entry<PsiTypeParameter, PsiType>> set = mySubstitutionMap.entrySet();
for (Map.Entry<PsiTypeParameter, PsiType> entry : set) {
final PsiTypeParameter typeParameter = entry.getKey();
buffer.append(typeParameter.getName());
final PsiElement owner = typeParameter.getOwner();
if (owner instanceof PsiClass) {
buffer.append(" of ");
buffer.append(((PsiClass) owner).getQualifiedName());
} else if (owner instanceof PsiMethod) {
buffer.append(" of ");
buffer.append(((PsiMethod) owner).getName());
buffer.append(" in ");
buffer.append(((PsiMethod) owner).getContainingClass().getQualifiedName());
}
buffer.append(" -> ");
if (entry.getValue() != null) {
buffer.append(entry.getValue().getCanonicalText());
} else {
buffer.append("null");
}
buffer.append('\n');
}
return buffer.toString();
}
private PsiType rawTypeForTypeParameter(final PsiTypeParameter typeParameter) {
final PsiClassType[] extendsTypes = typeParameter.getExtendsListTypes();
if (extendsTypes.length > 0) {
// First bound
return substitute(extendsTypes[0]);
} else {
// Object
return PsiType.getJavaLangObject(typeParameter.getManager(), typeParameter.getResolveScope());
}
}
private static void findTypeParameterExternalUsages(
final PsiTypeParameter typeParameter, final Collection<UsageInfo> usages) {
PsiTypeParameterListOwner owner = typeParameter.getOwner();
if (owner != null) {
final PsiTypeParameterList parameterList = owner.getTypeParameterList();
if (parameterList != null) {
final int paramsCount = parameterList.getTypeParameters().length;
final int index = parameterList.getTypeParameterIndex(typeParameter);
ReferencesSearch.search(owner)
.forEach(
reference -> {
if (reference instanceof PsiJavaCodeReferenceElement) {
final PsiReferenceParameterList parameterList1 =
((PsiJavaCodeReferenceElement) reference).getParameterList();
if (parameterList1 != null) {
PsiTypeElement[] typeArgs = parameterList1.getTypeParameterElements();
if (typeArgs.length > index) {
if (typeArgs.length == 1
&& paramsCount > 1
&& typeArgs[0].getType() instanceof PsiDiamondType) return true;
usages.add(
new SafeDeleteReferenceJavaDeleteUsageInfo(
typeArgs[index], typeParameter, true));
}
}
}
return true;
});
}
}
}
@Override
public PsiType substitute(@NotNull PsiTypeParameter typeParameter) {
if (containsInMap(typeParameter)) {
return getFromMap(typeParameter);
}
return JavaPsiFacade.getInstance(typeParameter.getProject())
.getElementFactory()
.createType(typeParameter);
}
private boolean check(PsiTypeParameter check) {
final PsiTypeParameterListOwner owner = check.getOwner();
if (owner == myMethod) {
return true;
} else if (owner == myClass) {
return true;
}
return false;
}
private void buildDelegate() {
final PsiManager manager = sourceClass.getManager();
final PsiElementFactory factory =
JavaPsiFacade.getInstance(manager.getProject()).getElementFactory();
final CodeStyleManager codeStyleManager = CodeStyleManager.getInstance(manager.getProject());
@NonNls final StringBuilder fieldBuffer = new StringBuilder();
final String delegateVisibility = calculateDelegateVisibility();
if (delegateVisibility.length() > 0) fieldBuffer.append(delegateVisibility).append(' ');
fieldBuffer.append("final ");
final String fullyQualifiedName = getQualifiedName();
fieldBuffer.append(fullyQualifiedName);
if (!typeParams.isEmpty()) {
fieldBuffer.append('<');
for (PsiTypeParameter typeParameter : typeParams) {
fieldBuffer.append(typeParameter.getName());
}
fieldBuffer.append('>');
}
fieldBuffer.append(' ');
fieldBuffer.append(delegateFieldName);
fieldBuffer.append(" = new ").append(fullyQualifiedName);
if (!typeParams.isEmpty()) {
fieldBuffer.append('<');
for (PsiTypeParameter typeParameter : typeParams) {
fieldBuffer.append(typeParameter.getName());
}
fieldBuffer.append('>');
}
fieldBuffer.append('(');
if (requiresBackpointer) {
fieldBuffer.append("this");
}
fieldBuffer.append(");");
try {
final String fieldString = fieldBuffer.toString();
final PsiField field = factory.createFieldFromText(fieldString, sourceClass);
final PsiElement newField = sourceClass.add(field);
codeStyleManager.reformat(
JavaCodeStyleManager.getInstance(myProject).shortenClassReferences(newField));
} catch (IncorrectOperationException e) {
logger.error(e);
}
}
private PsiType addBounds(PsiType substituted, final PsiTypeParameter typeParameter) {
PsiElement captureContext = null;
if (substituted instanceof PsiCapturedWildcardType) {
final PsiCapturedWildcardType captured = (PsiCapturedWildcardType) substituted;
substituted = captured.getWildcard();
captureContext = captured.getContext();
}
if (substituted instanceof PsiWildcardType && !((PsiWildcardType) substituted).isSuper()) {
PsiType originalBound = ((PsiWildcardType) substituted).getBound();
PsiManager manager = typeParameter.getManager();
final PsiType[] boundTypes = typeParameter.getExtendsListTypes();
for (PsiType boundType : boundTypes) {
PsiType substitutedBoundType = boundType.accept(mySimpleSubstitutionVisitor);
PsiWildcardType wildcardType = (PsiWildcardType) substituted;
if (substitutedBoundType != null
&& !(substitutedBoundType instanceof PsiWildcardType)
&& !substitutedBoundType.equalsToText("java.lang.Object")) {
if (originalBound == null
|| (!TypeConversionUtil.erasure(substitutedBoundType)
.isAssignableFrom(TypeConversionUtil.erasure(originalBound))
&& !TypeConversionUtil.erasure(substitutedBoundType)
.isAssignableFrom(
originalBound))) { // erasure is essential to avoid infinite recursion
if (wildcardType.isExtends()) {
final PsiType glb =
GenericsUtil.getGreatestLowerBound(wildcardType.getBound(), substitutedBoundType);
if (glb != null) {
substituted = PsiWildcardType.createExtends(manager, glb);
}
} else {
// unbounded
substituted = PsiWildcardType.createExtends(manager, substitutedBoundType);
}
}
}
}
}
if (captureContext != null) {
LOG.assertTrue(substituted instanceof PsiWildcardType);
substituted = PsiCapturedWildcardType.create((PsiWildcardType) substituted, captureContext);
}
return substituted;
}
public static Pair<PsiTypeParameter, PsiType> findTypeParameterWithBoundError(
final PsiTypeParameter[] typeParams,
final PsiSubstitutor substitutor,
final PsiElement context,
final boolean allowUncheckedConversion) {
nextTypeParam:
for (PsiTypeParameter typeParameter : typeParams) {
PsiType substituted = substitutor.substitute(typeParameter);
if (substituted == null) return null;
substituted = PsiUtil.captureToplevelWildcards(substituted, context);
PsiClassType[] extendsTypes = typeParameter.getExtendsListTypes();
for (PsiClassType type : extendsTypes) {
PsiType extendsType = substitutor.substitute(type);
if (substituted instanceof PsiWildcardType) {
if (((PsiWildcardType) substituted).isSuper()) {
continue;
}
final PsiType extendsBound = ((PsiWildcardType) substituted).getExtendsBound();
if (acceptExtendsBound(extendsType, extendsBound)) {
continue nextTypeParam;
}
} else if (substituted instanceof PsiIntersectionType) {
for (PsiType extendsBound : ((PsiIntersectionType) substituted).getConjuncts()) {
if (acceptExtendsBound(extendsType, extendsBound)) continue nextTypeParam;
}
} else if (substituted instanceof PsiCapturedWildcardType) {
final PsiType extendsBound = ((PsiCapturedWildcardType) substituted).getUpperBound();
if (acceptExtendsBound(extendsType, extendsBound)) {
continue nextTypeParam;
}
}
if (extendsType != null
&& !TypeConversionUtil.isAssignable(
extendsType, substituted, allowUncheckedConversion)) {
return Pair.create(typeParameter, extendsType);
}
}
}
return null;
}
public static PsiSubstitutor substituteByParameterName(
final PsiClass psiClass, final PsiSubstitutor parentSubstitutor) {
final Map<PsiTypeParameter, PsiType> substitutionMap = parentSubstitutor.getSubstitutionMap();
final List<PsiType> result = new ArrayList<PsiType>(substitutionMap.size());
for (PsiTypeParameter typeParameter : psiClass.getTypeParameters()) {
final String name = typeParameter.getName();
final PsiTypeParameter key =
ContainerUtil.find(
substitutionMap.keySet(),
new Condition<PsiTypeParameter>() {
@Override
public boolean value(final PsiTypeParameter psiTypeParameter) {
return name.equals(psiTypeParameter.getName());
}
});
if (key != null) {
result.add(substitutionMap.get(key));
}
}
return PsiSubstitutor.EMPTY.putAll(
psiClass, result.toArray(PsiType.createArray(result.size())));
}
public static boolean isClassEquivalentTo(@NotNull PsiClass aClass, PsiElement another) {
if (aClass == another) return true;
if (!(another instanceof PsiClass)) return false;
String name1 = aClass.getName();
if (name1 == null) return false;
if (!another.isValid()) return false;
String name2 = ((PsiClass) another).getName();
if (name2 == null) return false;
if (name1.hashCode() != name2.hashCode()) return false;
if (!name1.equals(name2)) return false;
String qName1 = aClass.getQualifiedName();
String qName2 = ((PsiClass) another).getQualifiedName();
if (qName1 == null || qName2 == null) {
//noinspection StringEquality
if (qName1 != qName2) return false;
if (aClass instanceof PsiTypeParameter && another instanceof PsiTypeParameter) {
PsiTypeParameter p1 = (PsiTypeParameter) aClass;
PsiTypeParameter p2 = (PsiTypeParameter) another;
return p1.getIndex() == p2.getIndex()
&& aClass.getManager().areElementsEquivalent(p1.getOwner(), p2.getOwner());
} else {
return false;
}
}
if (qName1.hashCode() != qName2.hashCode() || !qName1.equals(qName2)) {
return false;
}
if (originalElement(aClass).equals(originalElement((PsiClass) another))) {
return true;
}
final PsiFile file1 = aClass.getContainingFile().getOriginalFile();
final PsiFile file2 = another.getContainingFile().getOriginalFile();
// see com.intellij.openapi.vcs.changes.PsiChangeTracker
// see com.intellij.psi.impl.PsiFileFactoryImpl#createFileFromText(CharSequence,PsiFile)
final PsiFile original1 = file1.getUserData(PsiFileFactory.ORIGINAL_FILE);
final PsiFile original2 = file2.getUserData(PsiFileFactory.ORIGINAL_FILE);
if (original1 == original2 && original1 != null
|| original1 == file2
|| original2 == file1
|| file1 == file2) {
return compareClassSeqNumber(aClass, (PsiClass) another);
}
final FileIndexFacade fileIndex =
ServiceManager.getService(file1.getProject(), FileIndexFacade.class);
final VirtualFile vfile1 = file1.getViewProvider().getVirtualFile();
final VirtualFile vfile2 = file2.getViewProvider().getVirtualFile();
boolean lib1 = fileIndex.isInLibraryClasses(vfile1);
boolean lib2 = fileIndex.isInLibraryClasses(vfile2);
return (fileIndex.isInSource(vfile1) || lib1) && (fileIndex.isInSource(vfile2) || lib2);
}
@NotNull
public static PsiClass[] getInterfaces(@NotNull PsiTypeParameter typeParameter) {
final PsiClassType[] referencedTypes = typeParameter.getExtendsListTypes();
if (referencedTypes.length == 0) {
return PsiClass.EMPTY_ARRAY;
}
final List<PsiClass> result = new ArrayList<PsiClass>(referencedTypes.length);
for (PsiClassType referencedType : referencedTypes) {
final PsiClass psiClass = referencedType.resolve();
if (psiClass != null && psiClass.isInterface()) {
result.add(psiClass);
}
}
return result.toArray(new PsiClass[result.size()]);
}
@Override
public boolean equals(PsiTypeParameter element1, PsiTypeParameter element2) {
return element1.getManager().areElementsEquivalent(element1, element2);
}
@Override
public int computeHashCode(PsiTypeParameter object) {
String name = object.getName();
return name == null ? 0 : name.hashCode();
}