private Collection<JSQualifiedNamedElement> getCandidates(Editor editor, PsiFile file) {
final Collection<JSQualifiedNamedElement> candidates;
if (myReference instanceof JSReferenceExpression
&& ((JSReferenceExpression) myReference).getQualifier() == null) {
Collection<JSQualifiedNamedElement> c =
getCandidates(editor, file, myReference.getCanonicalText());
filterCandidates(c);
candidates = new THashSet<>(c, JSPsiImplUtils.QUALIFIED_NAME_HASHING_STRATEGY);
} else {
JSQualifiedNamedElement invalidResult = null;
for (ResolveResult r : myReference.multiResolve(false)) {
PsiElement element = r.getElement();
if (element instanceof JSQualifiedNamedElement) {
invalidResult = (JSQualifiedNamedElement) element;
}
}
if (invalidResult != null) {
if (myReference.getElement().getParent() instanceof JSNewExpression
&& invalidResult instanceof JSFunction
&& ((JSFunction) invalidResult).isConstructor()) {
invalidResult = (JSClass) invalidResult.getParent();
}
candidates = new SmartList<>();
candidates.add(invalidResult);
} else {
candidates = Collections.emptyList();
}
}
return candidates;
}
@Nullable
static HighlightInfo checkModuleReference(@Nullable PsiJavaModuleReferenceElement refElement) {
if (refElement != null) {
PsiPolyVariantReference ref = refElement.getReference();
assert ref != null : refElement.getParent();
if (ref.multiResolve(false).length == 0) {
String message =
JavaErrorMessages.message("module.ref.unknown", refElement.getReferenceText());
return HighlightInfo.newHighlightInfo(HighlightInfoType.WRONG_REF)
.range(refElement)
.description(message)
.create();
}
}
return null;
}
public boolean isAvailable(
@NotNull final Project project, final Editor editor, final PsiFile file) {
if (!myReference.getElement().isValid()) return false;
final long modL =
myReference.getElement().getManager().getModificationTracker().getModificationCount();
if (!isAvailableCalculated || modL != modificationCount) {
final ResolveResult[] results = myReference.multiResolve(false);
boolean hasValidResult = false;
for (ResolveResult r : results) {
if (r.isValidResult()) {
hasValidResult = true;
break;
}
}
if (!hasValidResult) {
final Collection<JSQualifiedNamedElement> candidates = getCandidates(editor, file);
isAvailableCalculated = true;
isAvailable = candidates.size() > 0;
String text;
if (isAvailable) {
final JSQualifiedNamedElement element = candidates.iterator().next();
text = element.getQualifiedName() + "?";
if (candidates.size() > 1) text += " (multiple choices...)";
if (!ApplicationManager.getApplication().isHeadlessEnvironment()) {
text += " Alt+Enter";
}
} else {
text = "";
}
myText = text;
} else {
isAvailableCalculated = true;
isAvailable = false;
myText = "";
}
modificationCount = modL;
}
return isAvailable;
}
private void doTest() throws Exception {
PsiPolyVariantReference reference =
(PsiPolyVariantReference) configureByFile(getTestName(true) + ".kt");
PsiElement resolved = reference.resolve();
assertNotNull(resolved);
assertEquals(1, reference.multiResolve(false).length);
List<PsiComment> comments = PsiTreeUtil.getChildrenOfTypeAsList(getFile(), PsiComment.class);
String[] expectedTarget = comments.get(comments.size() - 1).getText().substring(2).split(":");
assertEquals(2, expectedTarget.length);
String expectedFile = expectedTarget[0];
String expectedName = expectedTarget[1];
PsiFile targetFile = resolved.getContainingFile();
PsiDirectory targetDir = targetFile.getParent();
assertNotNull(targetDir);
assertEquals(expectedFile, targetDir.getName() + "/" + targetFile.getName());
assertInstanceOf(resolved, PsiNamedElement.class);
assertEquals(expectedName, ((PsiNamedElement) resolved).getName());
}