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 SearchScope getClassUseScope(@NotNull PsiClass aClass) {
if (aClass instanceof PsiAnonymousClass) {
return new LocalSearchScope(aClass);
}
final GlobalSearchScope maximalUseScope = ResolveScopeManager.getElementUseScope(aClass);
PsiFile file = aClass.getContainingFile();
if (PsiImplUtil.isInServerPage(file)) return maximalUseScope;
final PsiClass containingClass = aClass.getContainingClass();
if (aClass.hasModifierProperty(PsiModifier.PUBLIC)
|| aClass.hasModifierProperty(PsiModifier.PROTECTED)) {
return containingClass == null ? maximalUseScope : containingClass.getUseScope();
} else if (aClass.hasModifierProperty(PsiModifier.PRIVATE)
|| aClass instanceof PsiTypeParameter) {
PsiClass topClass = PsiUtil.getTopLevelClass(aClass);
return new LocalSearchScope(topClass == null ? aClass.getContainingFile() : topClass);
} else {
PsiPackage aPackage = null;
if (file instanceof PsiJavaFile) {
aPackage =
JavaPsiFacade.getInstance(aClass.getProject())
.findPackage(((PsiJavaFile) file).getPackageName());
}
if (aPackage == null) {
PsiDirectory dir = file.getContainingDirectory();
if (dir != null) {
aPackage = JavaDirectoryService.getInstance().getPackage(dir);
}
}
if (aPackage != null) {
SearchScope scope = PackageScope.packageScope(aPackage, false);
scope = scope.intersectWith(maximalUseScope);
return scope;
}
return new LocalSearchScope(file);
}
}