@Nullable
private LocalQuickFix[] createNPEFixes(
PsiExpression qualifier, PsiExpression expression, boolean onTheFly) {
if (qualifier == null || expression == null) return null;
if (qualifier instanceof PsiMethodCallExpression) return null;
if (qualifier instanceof PsiLiteralExpression
&& ((PsiLiteralExpression) qualifier).getValue() == null) return null;
try {
final List<LocalQuickFix> fixes = new SmartList<LocalQuickFix>();
if (PsiUtil.getLanguageLevel(qualifier).isAtLeast(LanguageLevel.JDK_1_4)) {
final Project project = qualifier.getProject();
final PsiElementFactory elementFactory =
JavaPsiFacade.getInstance(project).getElementFactory();
final PsiBinaryExpression binary =
(PsiBinaryExpression) elementFactory.createExpressionFromText("a != null", null);
binary.getLOperand().replace(qualifier);
fixes.add(new AddAssertStatementFix(binary));
}
addSurroundWithIfFix(qualifier, fixes, onTheFly);
if (ReplaceWithTernaryOperatorFix.isAvailable(qualifier, expression)) {
fixes.add(new ReplaceWithTernaryOperatorFix(qualifier));
}
return fixes.toArray(new LocalQuickFix[fixes.size()]);
} catch (IncorrectOperationException e) {
LOG.error(e);
return null;
}
}
private static void addStatementKeywords(Consumer<LookupElement> variant, PsiElement position) {
variant.consume(
new OverrideableSpace(
createKeyword(position, PsiKeyword.SWITCH), TailTypes.SWITCH_LPARENTH));
variant.consume(
new OverrideableSpace(createKeyword(position, PsiKeyword.WHILE), TailTypes.WHILE_LPARENTH));
variant.consume(
new OverrideableSpace(createKeyword(position, PsiKeyword.DO), TailTypes.DO_LBRACE));
variant.consume(
new OverrideableSpace(createKeyword(position, PsiKeyword.FOR), TailTypes.FOR_LPARENTH));
variant.consume(
new OverrideableSpace(createKeyword(position, PsiKeyword.IF), TailTypes.IF_LPARENTH));
variant.consume(
new OverrideableSpace(createKeyword(position, PsiKeyword.TRY), TailTypes.TRY_LBRACE));
variant.consume(
new OverrideableSpace(createKeyword(position, PsiKeyword.THROW), TailType.INSERT_SPACE));
variant.consume(
new OverrideableSpace(createKeyword(position, PsiKeyword.NEW), TailType.INSERT_SPACE));
variant.consume(
new OverrideableSpace(
createKeyword(position, PsiKeyword.SYNCHRONIZED), TailTypes.SYNCHRONIZED_LPARENTH));
if (PsiUtil.getLanguageLevel(position).isAtLeast(LanguageLevel.JDK_1_4)) {
variant.consume(
new OverrideableSpace(createKeyword(position, PsiKeyword.ASSERT), TailType.INSERT_SPACE));
}
TailType returnTail = getReturnTail(position);
LookupElement ret = createKeyword(position, PsiKeyword.RETURN);
if (returnTail != TailType.NONE) {
ret = new OverrideableSpace(ret, returnTail);
}
variant.consume(ret);
}
@Nullable
private static PsiType getExpectedTypeArg(
PsiElement context,
int index,
PsiClassType.ClassResolveResult expectedType,
PsiSubstitutor currentSubstitutor,
PsiTypeParameter[] params) {
PsiClass expectedClass = expectedType.getElement();
assert expectedClass != null;
for (PsiTypeParameter parameter : PsiUtil.typeParametersIterable(expectedClass)) {
final PsiType argSubstitution = expectedType.getSubstitutor().substitute(parameter);
final PsiType paramSubstitution = currentSubstitutor.substitute(parameter);
final PsiType substitution =
JavaPsiFacade.getInstance(context.getProject())
.getResolveHelper()
.getSubstitutionForTypeParameter(
params[index],
paramSubstitution,
argSubstitution,
false,
PsiUtil.getLanguageLevel(context));
if (substitution != null && substitution != PsiType.NULL) {
return substitution;
}
}
return null;
}
/* Guesswork
*/
@Nullable
private static PsiSubstitutor getInheritorSubstitutorForNewExpression(
final PsiClass baseClass,
final PsiClass inheritor,
final PsiSubstitutor baseSubstitutor,
final PsiElement context) {
final Project project = baseClass.getProject();
JavaPsiFacade facade = JavaPsiFacade.getInstance(project);
final PsiResolveHelper resolveHelper = facade.getResolveHelper();
PsiSubstitutor superSubstitutor =
TypeConversionUtil.getClassSubstitutor(baseClass, inheritor, PsiSubstitutor.EMPTY);
if (superSubstitutor == null) return null;
PsiSubstitutor inheritorSubstitutor = PsiSubstitutor.EMPTY;
for (PsiTypeParameter inheritorParameter : PsiUtil.typeParametersIterable(inheritor)) {
for (PsiTypeParameter baseParameter : PsiUtil.typeParametersIterable(baseClass)) {
final PsiType substituted = superSubstitutor.substitute(baseParameter);
PsiType arg = baseSubstitutor.substitute(baseParameter);
if (arg instanceof PsiWildcardType) arg = ((PsiWildcardType) arg).getBound();
PsiType substitution =
resolveHelper.getSubstitutionForTypeParameter(
inheritorParameter, substituted, arg, true, PsiUtil.getLanguageLevel(context));
if (PsiType.NULL.equals(substitution)) continue;
if (substitution == null) {
return facade.getElementFactory().createRawSubstitutor(inheritor);
}
inheritorSubstitutor = inheritorSubstitutor.put(inheritorParameter, substitution);
break;
}
}
return inheritorSubstitutor;
}
@NotNull
@Override
public PsiKeyword createKeyword(@NotNull @NonNls String keyword, PsiElement context)
throws IncorrectOperationException {
if (!JavaLexer.isKeyword(keyword, PsiUtil.getLanguageLevel(context))) {
throw new IncorrectOperationException("\"" + keyword + "\" is not a keyword.");
}
return new LightKeyword(myManager, keyword);
}
@Override
public boolean processDeclarations(
@NotNull final PsiScopeProcessor processor,
@NotNull final ResolveState state,
final PsiElement lastParent,
@NotNull final PsiElement place) {
return PsiClassImplUtil.processDeclarationsInClass(
this, processor, state, null, lastParent, place, PsiUtil.getLanguageLevel(place), false);
}
private static PsiType getExpandedType(PsiType type, @NotNull PsiElement typeElement) {
if (type instanceof PsiArrayType) {
type =
JavaPsiFacade.getElementFactory(typeElement.getProject())
.getArrayClassType(
((PsiArrayType) type).getComponentType(), PsiUtil.getLanguageLevel(typeElement));
}
return type;
}
private static boolean changeClassTypeArgument(
PsiMethod myMethod,
Project project,
PsiType superReturnType,
PsiClass superClass,
Editor editor,
PsiType returnType) {
if (superClass == null || !superClass.hasTypeParameters()) return true;
final PsiClass superReturnTypeClass = PsiUtil.resolveClassInType(superReturnType);
if (superReturnTypeClass == null
|| !(superReturnTypeClass instanceof PsiTypeParameter
|| superReturnTypeClass.hasTypeParameters())) return true;
final PsiClass derivedClass = myMethod.getContainingClass();
if (derivedClass == null) return true;
final PsiReferenceParameterList referenceParameterList =
findTypeArgumentsList(superClass, derivedClass);
if (referenceParameterList == null) return true;
final PsiElement resolve =
((PsiJavaCodeReferenceElement) referenceParameterList.getParent()).resolve();
if (!(resolve instanceof PsiClass)) return true;
final PsiClass baseClass = (PsiClass) resolve;
if (returnType instanceof PsiPrimitiveType) {
returnType = ((PsiPrimitiveType) returnType).getBoxedType(derivedClass);
}
final PsiSubstitutor superClassSubstitutor =
TypeConversionUtil.getSuperClassSubstitutor(superClass, baseClass, PsiSubstitutor.EMPTY);
final PsiType superReturnTypeInBaseClassType =
superClassSubstitutor.substitute(superReturnType);
final PsiResolveHelper resolveHelper = JavaPsiFacade.getInstance(project).getResolveHelper();
final PsiSubstitutor psiSubstitutor =
resolveHelper.inferTypeArguments(
PsiTypesUtil.filterUnusedTypeParameters(
superReturnTypeInBaseClassType, baseClass.getTypeParameters()),
new PsiType[] {superReturnTypeInBaseClassType},
new PsiType[] {returnType},
PsiUtil.getLanguageLevel(superClass));
final TypeMigrationRules rules = new TypeMigrationRules();
final PsiSubstitutor compoundSubstitutor =
TypeConversionUtil.getSuperClassSubstitutor(superClass, derivedClass, PsiSubstitutor.EMPTY)
.putAll(psiSubstitutor);
rules.setBoundScope(new LocalSearchScope(derivedClass));
TypeMigrationProcessor.runHighlightingTypeMigration(
project,
editor,
rules,
referenceParameterList,
JavaPsiFacade.getElementFactory(project).createType(baseClass, compoundSubstitutor));
return false;
}
@Override
public boolean processDeclarations(
@NotNull PsiScopeProcessor processor,
@NotNull ResolveState state,
PsiElement lastParent,
@NotNull PsiElement place) {
GlobalSearchScope scope = place.getResolveScope();
processor.handleEvent(PsiScopeProcessor.Event.SET_DECLARATION_HOLDER, this);
ElementClassHint classHint = processor.getHint(ElementClassHint.KEY);
final JavaPsiFacade facade = getFacade();
final Condition<String> prefixMatcher = processor.getHint(JavaCompletionHints.NAME_FILTER);
if (classHint == null || classHint.shouldProcess(ElementClassHint.DeclarationKind.CLASS)) {
NameHint nameHint = processor.getHint(NameHint.KEY);
if (nameHint != null) {
final String shortName = nameHint.getName(state);
if (containsClassNamed(shortName)
&& processClassesByName(processor, state, scope, shortName)) return false;
} else if (prefixMatcher != null) {
for (String className : getClassNamesCache()) {
if (prefixMatcher.value(className)) {
if (processClassesByName(processor, state, scope, className)) return false;
}
}
} else {
PsiClass[] classes = getClasses(scope);
if (!processClasses(processor, state, classes)) return false;
}
}
if (classHint == null || classHint.shouldProcess(ElementClassHint.DeclarationKind.PACKAGE)) {
NameHint nameHint = processor.getHint(NameHint.KEY);
if (nameHint != null) {
PsiPackage aPackage = findSubPackageByName(nameHint.getName(state));
if (aPackage != null) {
if (!processor.execute(aPackage, state)) return false;
}
} else {
PsiPackage[] packs = getSubPackages(scope);
for (PsiPackage pack : packs) {
final String packageName = pack.getName();
if (packageName == null) continue;
if (!facade.getNameHelper().isIdentifier(packageName, PsiUtil.getLanguageLevel(this))) {
continue;
}
if (!processor.execute(pack, state)) {
return false;
}
}
}
}
return true;
}
private static boolean shouldMarkRed(@NotNull Object object, @NotNull PsiElement place) {
if (!(object instanceof PsiMember)) return false;
if (Java15APIUsageInspectionBase.isForbiddenApiUsage(
(PsiMember) object, PsiUtil.getLanguageLevel(place))) return true;
if (object instanceof PsiEnumConstant) {
return findConstantsUsedInSwitch(place)
.contains(CompletionUtil.getOriginalOrSelf((PsiEnumConstant) object));
}
return false;
}
@Override
public boolean processDeclarations(
@NotNull PsiScopeProcessor processor,
@NotNull ResolveState state,
PsiElement lastParent,
@NotNull PsiElement place) {
GlobalSearchScope scope = place.getResolveScope();
processor.handleEvent(PsiScopeProcessor.Event.SET_DECLARATION_HOLDER, this);
ElementClassHint classHint = processor.getHint(ElementClassHint.KEY);
final Condition<String> nameCondition = processor.getHint(JavaCompletionHints.NAME_FILTER);
if (classHint == null || classHint.shouldProcess(ElementClassHint.DeclarationKind.CLASS)) {
NameHint nameHint = processor.getHint(NameHint.KEY);
if (nameHint != null) {
final String shortName = nameHint.getName(state);
final PsiClass[] classes = findClassByShortName(shortName, scope);
if (!processClasses(processor, state, classes, Conditions.<String>alwaysTrue()))
return false;
} else {
PsiClass[] classes = getClasses(scope);
if (!processClasses(
processor,
state,
classes,
nameCondition != null ? nameCondition : Conditions.<String>alwaysTrue())) return false;
}
}
if (classHint == null || classHint.shouldProcess(ElementClassHint.DeclarationKind.PACKAGE)) {
NameHint nameHint = processor.getHint(NameHint.KEY);
if (nameHint != null) {
PsiPackage aPackage = findSubPackageByName(nameHint.getName(state));
if (aPackage != null) {
if (!processor.execute(aPackage, state)) return false;
}
} else {
PsiPackage[] packs = getSubPackages(scope);
for (PsiPackage pack : packs) {
final String packageName = pack.getName();
if (packageName == null) continue;
if (!PsiNameHelper.getInstance(myManager.getProject())
.isIdentifier(packageName, PsiUtil.getLanguageLevel(this))) {
continue;
}
if (!processor.execute(pack, state)) {
return false;
}
}
}
}
return true;
}
@Override
@Nullable
public PsiType fun(final PsiMethodCallExpression call) {
PsiReferenceExpression methodExpression = call.getMethodExpression();
PsiType theOnly = null;
final JavaResolveResult[] results = methodExpression.multiResolve(false);
LanguageLevel languageLevel = PsiUtil.getLanguageLevel(call);
final PsiElement callParent = PsiUtil.skipParenthesizedExprUp(call.getParent());
final PsiExpressionList parentArgList;
if (languageLevel.isAtLeast(LanguageLevel.JDK_1_8)) {
parentArgList =
callParent instanceof PsiConditionalExpression
&& !PsiPolyExpressionUtil.isPolyExpression((PsiExpression) callParent)
? null
: PsiTreeUtil.getParentOfType(call, PsiExpressionList.class);
} else {
parentArgList = null;
}
final MethodCandidateInfo.CurrentCandidateProperties properties =
MethodCandidateInfo.getCurrentMethod(parentArgList);
final boolean genericMethodCall =
properties != null && properties.getInfo().isToInferApplicability();
for (int i = 0; i < results.length; i++) {
final JavaResolveResult candidateInfo = results[i];
if (genericMethodCall
&& PsiPolyExpressionUtil.isMethodCallPolyExpression(
call, (PsiMethod) candidateInfo.getElement())) {
if (callParent instanceof PsiAssignmentExpression) {
return null;
}
LOG.error("poly expression evaluation during overload resolution");
}
final PsiType type = getResultType(call, methodExpression, candidateInfo, languageLevel);
if (type == null) {
return null;
}
if (i == 0) {
theOnly = type;
} else if (!theOnly.equals(type)) {
return null;
}
}
return PsiClassImplUtil.correctType(theOnly, call.getResolveScope());
}
@Override
public ASTNode parseContents(final ASTNode chameleon) {
if (JavaParserDefinition.USE_NEW_PARSER) {
final PsiBuilder builder = JavaParserUtil.createBuilder(chameleon);
doParse(builder);
return builder.getTreeBuilt().getFirstChildNode();
}
FileElement node = (FileElement) chameleon;
final CharSequence seq = node.getChars();
final PsiManager manager = node.getManager();
final JavaLexer lexer = new JavaLexer(PsiUtil.getLanguageLevel(node.getPsi()));
return FileTextParsing.parseFileText(manager, lexer, seq, 0, seq.length(), node.getCharTable());
}
private static boolean shouldMarkRed(@NotNull Object object, @NotNull PsiElement place) {
if (!(object instanceof PsiMember)) return false;
if (Java15APIUsageInspectionBase.isForbiddenApiUsage(
(PsiMember) object, PsiUtil.getLanguageLevel(place))) return true;
if (object instanceof PsiEnumConstant) {
return findConstantsUsedInSwitch(place)
.contains(CompletionUtil.getOriginalOrSelf((PsiEnumConstant) object));
}
if (object instanceof PsiClass
&& ReferenceListWeigher.INSTANCE.getApplicability((PsiClass) object, place)
== inapplicable) {
return true;
}
return false;
}
/**
* Returns a boxed class type corresponding to the primitive type.
*
* @param context where this boxed type is to be used
* @return the class type, or null if the current language level does not support autoboxing or it
* was not possible to resolve the reference to the class.
*/
@Nullable
public PsiClassType getBoxedType(PsiElement context) {
PsiFile file = context.getContainingFile();
LanguageLevel languageLevel = PsiUtil.getLanguageLevel(file);
if (!languageLevel.isAtLeast(LanguageLevel.JDK_1_5)) return null;
String boxedQName = getBoxedTypeName();
// [ven]previous call returns null for NULL, VOID
if (boxedQName == null) return null;
JavaPsiFacade facade = JavaPsiFacade.getInstance(file.getProject());
PsiClass aClass = facade.findClass(boxedQName, context.getResolveScope());
if (aClass == null) return null;
PsiElementFactory factory = facade.getElementFactory();
return factory.createType(aClass, PsiSubstitutor.EMPTY, languageLevel, getAnnotations());
}
public static String checkReturnType(
PsiMethodReferenceExpression expression,
JavaResolveResult result,
PsiType functionalInterfaceType) {
final PsiElement resolve = result.getElement();
if (resolve instanceof PsiMethod) {
final PsiClass containingClass = ((PsiMethod) resolve).getContainingClass();
LOG.assertTrue(containingClass != null);
PsiSubstitutor subst = result.getSubstitutor();
PsiClass qContainingClass = getQualifierResolveResult(expression).getContainingClass();
if (qContainingClass != null
&& isReceiverType(functionalInterfaceType, containingClass, (PsiMethod) resolve)) {
subst = TypeConversionUtil.getClassSubstitutor(containingClass, qContainingClass, subst);
LOG.assertTrue(subst != null);
}
final PsiType interfaceReturnType =
LambdaUtil.getFunctionalInterfaceReturnType(functionalInterfaceType);
PsiType returnType =
PsiTypesUtil.patchMethodGetClassReturnType(
expression,
expression,
(PsiMethod) resolve,
null,
PsiUtil.getLanguageLevel(expression));
if (returnType == null) {
returnType = ((PsiMethod) resolve).getReturnType();
}
PsiType methodReturnType = subst.substitute(returnType);
if (interfaceReturnType != null && interfaceReturnType != PsiType.VOID) {
if (methodReturnType == null) {
methodReturnType =
JavaPsiFacade.getElementFactory(expression.getProject())
.createType(containingClass, subst);
}
if (!TypeConversionUtil.isAssignable(interfaceReturnType, methodReturnType, false)) {
return "Bad return type in method reference: cannot convert "
+ methodReturnType.getCanonicalText()
+ " to "
+ interfaceReturnType.getCanonicalText();
}
}
}
return null;
}
private static void addKeywords(CompletionParameters parameters, CompletionResultSet result) {
PsiElement position = parameters.getPosition();
final Set<LookupElement> lookupSet = new LinkedHashSet<LookupElement>();
final Set<CompletionVariant> keywordVariants = new HashSet<CompletionVariant>();
final JavaCompletionData completionData = getCompletionData(PsiUtil.getLanguageLevel(position));
completionData.addKeywordVariants(keywordVariants, position, parameters.getOriginalFile());
completionData.completeKeywordsBySet(
lookupSet,
keywordVariants,
position,
result.getPrefixMatcher(),
parameters.getOriginalFile());
completionData.fillCompletions(parameters, result);
for (final LookupElement item : lookupSet) {
result.addElement(item);
}
}
private static PsiSubstitutor getSuperClassSubstitutor(
final PsiType superClassType,
final PsiClassType targetClassType,
final PsiResolveHelper resolveHelper,
PsiClass targetClass) {
PsiSubstitutor subst = PsiSubstitutor.EMPTY;
for (PsiTypeParameter typeParameter : PsiUtil.typeParametersIterable(targetClass)) {
subst =
subst.put(
typeParameter,
resolveHelper.getSubstitutionForTypeParameter(
typeParameter,
targetClassType,
superClassType,
false,
PsiUtil.getLanguageLevel(targetClass)));
}
return subst;
}
public static boolean processDeclarationsInClass(
@NotNull PsiClass aClass,
@NotNull final PsiScopeProcessor processor,
@NotNull ResolveState state,
@Nullable Set<PsiClass> visited,
PsiElement last,
@NotNull PsiElement place,
boolean isRaw) {
if (last instanceof PsiTypeParameterList || last instanceof PsiModifierList) {
return true; // TypeParameterList and ModifierList do not see our declarations
}
if (visited != null && visited.contains(aClass)) return true;
PsiSubstitutor substitutor = state.get(PsiSubstitutor.KEY);
isRaw = isRaw || PsiUtil.isRawSubstitutor(aClass, substitutor);
ParameterizedCachedValue<MembersMap, PsiClass> cache =
getValues(aClass); // aClass.getUserData(MAP_IN_CLASS_KEY);
boolean upToDate = cache.hasUpToDateValue();
LanguageLevel languageLevel = PsiUtil.getLanguageLevel(place);
if (
/*true || */ upToDate) {
final NameHint nameHint = processor.getHint(NameHint.KEY);
if (nameHint != null) {
String name = nameHint.getName(state);
return processCachedMembersByName(
aClass,
processor,
state,
visited,
last,
place,
isRaw,
substitutor,
cache.getValue(aClass),
name,
languageLevel);
}
}
return processDeclarationsInClassNotCached(
aClass, processor, state, visited, last, place, isRaw, languageLevel);
}
@NotNull
public static PsiAnnotationMemberValue createMemberValueFromText(
final String text, final PsiManager manager, final ClsElementImpl parent) {
final PsiElementFactory factory =
JavaPsiFacade.getInstance(manager.getProject()).getElementFactory();
final PsiJavaFile context =
((PsiJavaParserFacadeImpl) factory).getDummyJavaFile(); // to resolve classes from java.lang
final LanguageLevel level = PsiUtil.getLanguageLevel(parent);
final DummyHolder holder =
DummyHolderFactory.createHolder(
manager, new JavaDummyElement(text, ANNOTATION_VALUE, level), context);
final PsiElement element =
SourceTreeToPsiMap.treeElementToPsi(holder.getTreeElement().getFirstChildNode());
if (!(element instanceof PsiAnnotationMemberValue)) {
LOG.error("Could not parse initializer:'" + text + "'");
return null;
}
return getMemberValue(element, parent);
}
@NotNull
private static MembersMap buildAllMaps(@NotNull PsiClass psiClass) {
final List<Pair<PsiMember, PsiSubstitutor>> classes =
new ArrayList<Pair<PsiMember, PsiSubstitutor>>();
final List<Pair<PsiMember, PsiSubstitutor>> fields =
new ArrayList<Pair<PsiMember, PsiSubstitutor>>();
final List<Pair<PsiMember, PsiSubstitutor>> methods =
new ArrayList<Pair<PsiMember, PsiSubstitutor>>();
FilterScopeProcessor<MethodCandidateInfo> processor =
new FilterScopeProcessor<MethodCandidateInfo>(
new OrFilter(
ElementClassFilter.METHOD, ElementClassFilter.FIELD, ElementClassFilter.CLASS)) {
@Override
protected void add(PsiElement element, PsiSubstitutor substitutor) {
if (element instanceof PsiMethod) {
methods.add(Pair.create((PsiMember) element, substitutor));
} else if (element instanceof PsiField) {
fields.add(Pair.create((PsiMember) element, substitutor));
} else if (element instanceof PsiClass) {
classes.add(Pair.create((PsiMember) element, substitutor));
}
}
};
processDeclarationsInClassNotCached(
psiClass,
processor,
ResolveState.initial(),
null,
null,
psiClass,
false,
PsiUtil.getLanguageLevel(psiClass));
MembersMap result = new MembersMap(MemberType.class);
result.put(MemberType.CLASS, generateMapByList(classes));
result.put(MemberType.METHOD, generateMapByList(methods));
result.put(MemberType.FIELD, generateMapByList(fields));
return result;
}
public void handleInsert(
final InsertionContext context, final JavaPsiClassReferenceElement item) {
final char c = context.getCompletionChar();
int offset = context.getTailOffset() - 1;
final PsiFile file = context.getFile();
if (PsiTreeUtil.findElementOfClassAtOffset(file, offset, PsiImportStatementBase.class, false)
!= null) {
final PsiJavaCodeReferenceElement ref =
PsiTreeUtil.findElementOfClassAtOffset(
file, offset, PsiJavaCodeReferenceElement.class, false);
final String qname = item.getQualifiedName();
if (qname != null && (ref == null || !qname.equals(ref.getCanonicalText()))) {
AllClassesGetter.INSERT_FQN.handleInsert(context, item);
}
return;
}
PsiElement position = file.findElementAt(offset);
PsiClass psiClass = item.getObject();
final Project project = context.getProject();
final boolean annotation = insertingAnnotation(context, item);
final Editor editor = context.getEditor();
if (c == '#') {
context.setLaterRunnable(
new Runnable() {
public void run() {
new CodeCompletionHandlerBase(CompletionType.BASIC).invokeCompletion(project, editor);
}
});
} else if (c == '.' && PsiTreeUtil.getParentOfType(position, PsiParameterList.class) == null) {
AutoPopupController.getInstance(context.getProject())
.autoPopupMemberLookup(context.getEditor(), null);
}
if (position != null) {
PsiElement parent = position.getParent();
if (parent instanceof PsiJavaCodeReferenceElement) {
final PsiJavaCodeReferenceElement ref = (PsiJavaCodeReferenceElement) parent;
if (PsiTreeUtil.getParentOfType(position, PsiDocTag.class) != null
&& ref.isReferenceTo(psiClass)) {
return;
}
}
}
OffsetKey refEnd = context.trackOffset(context.getTailOffset(), false);
boolean fillTypeArgs = context.getCompletionChar() == '<';
if (fillTypeArgs) {
context.setAddCompletionChar(false);
}
if (shouldInsertParentheses(psiClass, position)) {
if (ConstructorInsertHandler.insertParentheses(context, item, psiClass, false)) {
fillTypeArgs |=
psiClass.hasTypeParameters()
&& PsiUtil.getLanguageLevel(file).isAtLeast(LanguageLevel.JDK_1_5);
}
} else if (insertingAnnotationWithParameters(context, item)) {
JavaCompletionUtil.insertParentheses(context, item, false, true);
AutoPopupController.getInstance(project).autoPopupParameterInfo(editor, null);
}
LOG.assertTrue(context.getTailOffset() >= 0);
String docText = context.getDocument().getText();
DefaultInsertHandler.addImportForItem(context, item);
if (context.getTailOffset() < 0) {
LOG.error(
LogMessageEx.createEvent(
"Tail offset degraded after insertion",
"start=" + context.getStartOffset(),
new Attachment(
context.getFile().getViewProvider().getVirtualFile().getPath(), docText)));
}
if (annotation) {
// Check if someone inserts annotation class that require @
PsiElement elementAt = file.findElementAt(context.getStartOffset());
final PsiElement parentElement = elementAt != null ? elementAt.getParent() : null;
if (elementAt instanceof PsiIdentifier
&& (PsiTreeUtil.getParentOfType(elementAt, PsiAnnotationParameterList.class) != null
|| parentElement instanceof PsiErrorElement
&& parentElement.getParent()
instanceof PsiJavaFile // top level annotation without @
)
&& isAtTokenNeeded(context)) {
int expectedOffsetForAtToken = elementAt.getTextRange().getStartOffset();
context.getDocument().insertString(expectedOffsetForAtToken, "@");
}
}
if (fillTypeArgs) {
PostprocessReformattingAspect.getInstance(project).doPostponedFormatting();
int typeArgs = context.getOffset(refEnd);
if (typeArgs >= 0) {
context.getDocument().insertString(typeArgs, "<>");
context.getEditor().getCaretModel().moveToOffset(typeArgs + 1);
}
}
}
public void fillCompletions(
CompletionParameters parameters, final Consumer<LookupElement> result) {
final PsiElement position = parameters.getPosition();
if (PsiTreeUtil.getParentOfType(position, PsiComment.class, false) != null) {
return;
}
PsiStatement statement = PsiTreeUtil.getParentOfType(position, PsiExpressionStatement.class);
if (statement == null) {
statement = PsiTreeUtil.getParentOfType(position, PsiDeclarationStatement.class);
}
PsiElement prevLeaf = PsiTreeUtil.prevVisibleLeaf(position);
if (statement != null
&& statement.getTextRange().getStartOffset() == position.getTextRange().getStartOffset()) {
if (!psiElement()
.withSuperParent(2, PsiSwitchStatement.class)
.afterLeaf("{")
.accepts(statement)) {
PsiTryStatement tryStatement = PsiTreeUtil.getParentOfType(prevLeaf, PsiTryStatement.class);
if (tryStatement == null
|| tryStatement.getCatchSections().length > 0
|| tryStatement.getFinallyBlock() != null) {
result.consume(
new OverrideableSpace(
createKeyword(position, PsiKeyword.FINAL), TailType.HUMBLE_SPACE_BEFORE_WORD));
}
}
}
if (isStatementPosition(position)) {
if (PsiTreeUtil.getParentOfType(position, PsiSwitchStatement.class, false, PsiMember.class)
!= null) {
result.consume(
new OverrideableSpace(createKeyword(position, PsiKeyword.CASE), TailType.INSERT_SPACE));
result.consume(
new OverrideableSpace(
createKeyword(position, PsiKeyword.DEFAULT), TailType.CASE_COLON));
if (START_SWITCH.accepts(position)) {
return;
}
}
addBreakContinue(result, position);
addStatementKeywords(result, position);
}
if (SUPER_OR_THIS_PATTERN.accepts(position)) {
final boolean afterDot = AFTER_DOT.accepts(position);
final boolean insideQualifierClass = isInsideQualifierClass(position);
final boolean insideInheritorClass =
PsiUtil.isLanguageLevel8OrHigher(position) && isInsideInheritorClass(position);
if (!afterDot || insideQualifierClass || insideInheritorClass) {
if (!afterDot || insideQualifierClass) {
result.consume(createKeyword(position, PsiKeyword.THIS));
}
final LookupItem superItem = (LookupItem) createKeyword(position, PsiKeyword.SUPER);
if (psiElement()
.afterLeaf(psiElement().withText("{").withSuperParent(2, psiMethod().constructor(true)))
.accepts(position)) {
final PsiMethod method =
PsiTreeUtil.getParentOfType(position, PsiMethod.class, false, PsiClass.class);
assert method != null;
final boolean hasParams = superConstructorHasParameters(method);
superItem.setInsertHandler(
new ParenthesesInsertHandler<LookupElement>() {
@Override
protected boolean placeCaretInsideParentheses(
InsertionContext context, LookupElement item) {
return hasParams;
}
@Override
public void handleInsert(InsertionContext context, LookupElement item) {
super.handleInsert(context, item);
TailType.insertChar(context.getEditor(), context.getTailOffset(), ';');
}
});
}
result.consume(superItem);
}
}
if (isExpressionPosition(position)) {
if (PsiTreeUtil.getParentOfType(position, PsiAnnotation.class) == null) {
result.consume(
TailTypeDecorator.withTail(
createKeyword(position, PsiKeyword.NEW), TailType.INSERT_SPACE));
result.consume(createKeyword(position, PsiKeyword.NULL));
}
if (mayExpectBoolean(parameters)) {
result.consume(createKeyword(position, PsiKeyword.TRUE));
result.consume(createKeyword(position, PsiKeyword.FALSE));
}
}
PsiFile file = position.getContainingFile();
if (!(file instanceof PsiExpressionCodeFragment)
&& !(file instanceof PsiJavaCodeReferenceCodeFragment)
&& !(file instanceof PsiTypeCodeFragment)) {
if (prevLeaf == null) {
result.consume(
new OverrideableSpace(
createKeyword(position, PsiKeyword.PACKAGE), TailType.HUMBLE_SPACE_BEFORE_WORD));
result.consume(
new OverrideableSpace(
createKeyword(position, PsiKeyword.IMPORT), TailType.HUMBLE_SPACE_BEFORE_WORD));
} else if (END_OF_BLOCK.getValue().isAcceptable(position, position)
&& PsiTreeUtil.getParentOfType(position, PsiMember.class) == null) {
result.consume(
new OverrideableSpace(
createKeyword(position, PsiKeyword.IMPORT), TailType.HUMBLE_SPACE_BEFORE_WORD));
}
}
if ((isInsideParameterList(position)
|| isAtResourceVariableStart(position)
|| isAtCatchVariableStart(position))
&& !psiElement().afterLeaf(PsiKeyword.FINAL).accepts(position)
&& !AFTER_DOT.accepts(position)) {
result.consume(
TailTypeDecorator.withTail(
createKeyword(position, PsiKeyword.FINAL), TailType.HUMBLE_SPACE_BEFORE_WORD));
}
if (isInstanceofPlace(position)) {
result.consume(
LookupElementDecorator.withInsertHandler(
createKeyword(position, PsiKeyword.INSTANCEOF),
new InsertHandler<LookupElementDecorator<LookupElement>>() {
@Override
public void handleInsert(
InsertionContext context, LookupElementDecorator<LookupElement> item) {
TailType tailType = TailType.HUMBLE_SPACE_BEFORE_WORD;
if (tailType.isApplicable(context)) {
tailType.processTail(context.getEditor(), context.getTailOffset());
}
if ('!' == context.getCompletionChar()) {
context.setAddCompletionChar(false);
context.commitDocument();
PsiInstanceOfExpression expr =
PsiTreeUtil.findElementOfClassAtOffset(
context.getFile(),
context.getStartOffset(),
PsiInstanceOfExpression.class,
false);
if (expr != null) {
String space =
context.getCodeStyleSettings().SPACE_WITHIN_PARENTHESES ? " " : "";
context
.getDocument()
.insertString(expr.getTextRange().getStartOffset(), "!(" + space);
context.getDocument().insertString(context.getTailOffset(), space + ")");
}
}
}
}));
}
if (isSuitableForClass(position)) {
for (String s : ModifierChooser.getKeywords(position)) {
result.consume(
new OverrideableSpace(createKeyword(position, s), TailType.HUMBLE_SPACE_BEFORE_WORD));
}
result.consume(
new OverrideableSpace(
createKeyword(position, PsiKeyword.CLASS), TailType.HUMBLE_SPACE_BEFORE_WORD));
if (PsiTreeUtil.getParentOfType(position, PsiCodeBlock.class, true, PsiMember.class)
== null) {
result.consume(
new OverrideableSpace(
createKeyword(position, PsiKeyword.INTERFACE), TailType.HUMBLE_SPACE_BEFORE_WORD));
if (PsiUtil.getLanguageLevel(position).isAtLeast(LanguageLevel.JDK_1_5)) {
result.consume(
new OverrideableSpace(
createKeyword(position, PsiKeyword.ENUM), TailType.INSERT_SPACE));
}
}
}
addPrimitiveTypes(result, position);
if (isAfterTypeDot(position)) {
result.consume(createKeyword(position, PsiKeyword.CLASS));
}
addUnfinishedMethodTypeParameters(position, result);
if (JavaMemberNameCompletionContributor.INSIDE_TYPE_PARAMS_PATTERN.accepts(position)) {
result.consume(
new OverrideableSpace(
createKeyword(position, PsiKeyword.EXTENDS), TailType.HUMBLE_SPACE_BEFORE_WORD));
result.consume(
new OverrideableSpace(
createKeyword(position, PsiKeyword.SUPER), TailType.HUMBLE_SPACE_BEFORE_WORD));
}
}
private void reparse(
String str, PsiElement element, final boolean isStaticImport, JavaClassReferenceSet context) {
myElement = element;
myContext = context;
final List<JavaClassReference> referencesList = new ArrayList<JavaClassReference>();
int currentDot = -1;
int referenceIndex = 0;
boolean allowDollarInNames = isAllowDollarInNames();
boolean allowGenerics = false;
boolean allowGenericsCalculated = false;
boolean parsingClassNames = true;
while (parsingClassNames) {
int nextDotOrDollar = -1;
for (int curIndex = currentDot + 1; curIndex < str.length(); ++curIndex) {
final char ch = str.charAt(curIndex);
if (ch == SEPARATOR || (ch == SEPARATOR2 && allowDollarInNames)) {
nextDotOrDollar = curIndex;
break;
}
if (((ch == SEPARATOR3 || ch == SEPARATOR4))) {
if (!allowGenericsCalculated) {
allowGenerics =
!isStaticImport && PsiUtil.getLanguageLevel(element).hasEnumKeywordAndAutoboxing();
allowGenericsCalculated = true;
}
if (allowGenerics) {
nextDotOrDollar = curIndex;
break;
}
}
}
if (nextDotOrDollar == -1) {
nextDotOrDollar = currentDot + 1;
for (int i = nextDotOrDollar;
i < str.length() && Character.isJavaIdentifierPart(str.charAt(i));
++i) nextDotOrDollar++;
parsingClassNames = false;
int j = nextDotOrDollar;
while (j < str.length() && Character.isWhitespace(str.charAt(j))) ++j;
if (j < str.length()) {
char ch = str.charAt(j);
boolean recognized = false;
if (ch == '[') {
j++;
while (j < str.length() && Character.isWhitespace(str.charAt(j))) ++j;
if (j < str.length()) {
ch = str.charAt(j);
if (ch == ']') {
j++;
while (j < str.length() && Character.isWhitespace(str.charAt(j))) ++j;
recognized = j == str.length();
}
}
}
final Boolean aBoolean = JavaClassReferenceProvider.JVM_FORMAT.getValue(getOptions());
if (aBoolean == null || !aBoolean.booleanValue()) {
if (!recognized)
nextDotOrDollar = -1; // nonsensible characters anyway, don't do resolve
}
}
}
if (nextDotOrDollar != -1 && nextDotOrDollar < str.length()) {
final char c = str.charAt(nextDotOrDollar);
if (c == SEPARATOR3) {
int end = str.lastIndexOf('>');
if (end != -1 && end > nextDotOrDollar) {
if (myNestedGenericParameterReferences == null)
myNestedGenericParameterReferences = new ArrayList<JavaClassReferenceSet>(1);
myNestedGenericParameterReferences.add(
new JavaClassReferenceSet(
str.substring(nextDotOrDollar + 1, end),
myElement,
myStartInElement + nextDotOrDollar + 1,
isStaticImport,
myProvider,
this));
parsingClassNames = false;
} else {
nextDotOrDollar = -1; // nonsensible characters anyway, don't do resolve
}
} else if (SEPARATOR4 == c && myContext != null) {
if (myContext.myNestedGenericParameterReferences == null)
myContext.myNestedGenericParameterReferences = new ArrayList<JavaClassReferenceSet>(1);
myContext.myNestedGenericParameterReferences.add(
new JavaClassReferenceSet(
str.substring(nextDotOrDollar + 1),
myElement,
myStartInElement + nextDotOrDollar + 1,
isStaticImport,
myProvider,
this));
parsingClassNames = false;
}
}
int beginIndex = currentDot + 1;
while (beginIndex < nextDotOrDollar && Character.isWhitespace(str.charAt(beginIndex)))
beginIndex++;
final String subreferenceText =
nextDotOrDollar > 0
? str.substring(beginIndex, nextDotOrDollar)
: str.substring(beginIndex);
TextRange textRange =
new TextRange(
myStartInElement + beginIndex,
myStartInElement + (nextDotOrDollar > 0 ? nextDotOrDollar : str.length()));
JavaClassReference currentContextRef =
createReference(referenceIndex, subreferenceText, textRange, isStaticImport);
referenceIndex++;
referencesList.add(currentContextRef);
if ((currentDot = nextDotOrDollar) < 0) {
break;
}
}
myReferences = referencesList.toArray(new JavaClassReference[referencesList.size()]);
}
public static boolean processDeclarations(
@NotNull GrTypeDefinition grType,
@NotNull PsiScopeProcessor processor,
@NotNull ResolveState state,
@Nullable PsiElement lastParent,
@NotNull PsiElement place) {
if (place instanceof GrCodeReferenceElement && lastParent instanceof GrModifierList) {
final PsiElement possibleAnnotation =
PsiTreeUtil.skipParentsOfType(place, GrCodeReferenceElement.class);
if (possibleAnnotation instanceof GrAnnotation
&& possibleAnnotation.getParent() == lastParent) {
return true; // don't process class members while resolving annotation which annotates
// current class
}
}
for (final PsiTypeParameter typeParameter : grType.getTypeParameters()) {
if (!processElement(processor, typeParameter, state)) return false;
}
NameHint nameHint = processor.getHint(NameHint.KEY);
String name = nameHint == null ? null : nameHint.getName(state);
ClassHint classHint = processor.getHint(ClassHint.KEY);
final PsiSubstitutor substitutor = state.get(PsiSubstitutor.KEY);
final PsiElementFactory factory = JavaPsiFacade.getElementFactory(place.getProject());
boolean processInstanceMethods =
(shouldProcessMethods(classHint) || shouldProcessProperties(classHint))
&& shouldProcessInstanceMembers(grType, lastParent);
LanguageLevel level = PsiUtil.getLanguageLevel(place);
if (shouldProcessProperties(classHint)) {
Map<String, CandidateInfo> fieldsMap = CollectClassMembersUtil.getAllFields(grType);
if (name != null) {
CandidateInfo fieldInfo = fieldsMap.get(name);
if (fieldInfo != null) {
if (!processField(
grType,
processor,
state,
place,
processInstanceMethods,
substitutor,
factory,
level,
fieldInfo)) {
return false;
}
} else if (grType.isTrait() && lastParent != null) {
PsiField field = findFieldByName(grType, name, false, true);
if (field != null && field.hasModifierProperty(PsiModifier.PUBLIC)) {
if (!processField(
grType,
processor,
state,
place,
processInstanceMethods,
substitutor,
factory,
level,
new CandidateInfo(field, PsiSubstitutor.EMPTY))) {
return false;
}
}
}
} else {
for (CandidateInfo info : fieldsMap.values()) {
if (!processField(
grType,
processor,
state,
place,
processInstanceMethods,
substitutor,
factory,
level,
info)) {
return false;
}
}
if (grType.isTrait() && lastParent != null) {
for (PsiField field : CollectClassMembersUtil.getFields(grType, true)) {
if (field.hasModifierProperty(PsiModifier.PUBLIC)) {
if (!processField(
grType,
processor,
state,
place,
processInstanceMethods,
substitutor,
factory,
level,
new CandidateInfo(field, PsiSubstitutor.EMPTY))) {
return false;
}
}
}
}
}
}
if (shouldProcessMethods(classHint)) {
Map<String, List<CandidateInfo>> methodsMap =
CollectClassMembersUtil.getAllMethods(grType, true);
boolean isPlaceGroovy = place.getLanguage() == GroovyFileType.GROOVY_LANGUAGE;
if (name == null) {
for (List<CandidateInfo> list : methodsMap.values()) {
for (CandidateInfo info : list) {
if (!processMethod(
grType,
processor,
state,
place,
processInstanceMethods,
substitutor,
factory,
level,
isPlaceGroovy,
info)) {
return false;
}
}
}
} else {
List<CandidateInfo> byName = methodsMap.get(name);
if (byName != null) {
for (CandidateInfo info : byName) {
if (!processMethod(
grType,
processor,
state,
place,
processInstanceMethods,
substitutor,
factory,
level,
isPlaceGroovy,
info)) {
return false;
}
}
}
}
}
final GrTypeDefinitionBody body = grType.getBody();
if (body != null) {
if (shouldProcessClasses(classHint)) {
for (PsiClass innerClass : getInnerClassesForResolve(grType, lastParent, place)) {
final String innerClassName = innerClass.getName();
if (nameHint != null && !innerClassName.equals(nameHint.getName(state))) {
continue;
}
if (!processor.execute(innerClass, state)) {
return false;
}
}
}
}
return true;
}
@Override
@NotNull
public LanguageLevel getLanguageLevel() {
return myLanguageLevel != null ? myLanguageLevel : PsiUtil.getLanguageLevel(myClass);
}
@Override
@NotNull
public LanguageLevel getLanguageLevel() {
if (myLanguageLevel != null) return myLanguageLevel;
return PsiUtil.getLanguageLevel(myClass);
}
@Override
public Result acceptChar(char c, final int prefixLength, final Lookup lookup) {
if (!lookup.getPsiFile().getLanguage().isKindOf(JavaLanguage.INSTANCE)) {
return null;
}
LookupElement item = lookup.getCurrentItem();
if (item == null) return null;
final Object o = item.getObject();
if (c == '!') {
if (o instanceof PsiVariable) {
if (PsiType.BOOLEAN.isAssignableFrom(((PsiVariable) o).getType()))
return Result.SELECT_ITEM_AND_FINISH_LOOKUP;
}
if (o instanceof PsiMethod) {
final PsiType type = ((PsiMethod) o).getReturnType();
if (type != null && PsiType.BOOLEAN.isAssignableFrom(type))
return Result.SELECT_ITEM_AND_FINISH_LOOKUP;
}
if (o instanceof PsiKeyword && ((PsiKeyword) o).textMatches(PsiKeyword.INSTANCEOF)) {
return Result.SELECT_ITEM_AND_FINISH_LOOKUP;
}
return null;
}
if (c == '.' && isWithinLiteral(lookup)) return Result.ADD_TO_PREFIX;
if (c == ':') {
PsiFile file = lookup.getPsiFile();
PsiDocumentManager.getInstance(file.getProject())
.commitDocument(lookup.getEditor().getDocument());
PsiElement leaf = file.findElementAt(lookup.getEditor().getCaretModel().getOffset() - 1);
if (PsiUtil.getLanguageLevel(file).isAtLeast(LanguageLevel.JDK_1_8)) {
PsiStatement statement = PsiTreeUtil.getParentOfType(leaf, PsiStatement.class);
if (statement == null
|| statement.getTextRange().getStartOffset()
!= leaf.getTextRange().getStartOffset()) { // not typing a statement label
return Result.SELECT_ITEM_AND_FINISH_LOOKUP;
}
}
if (PsiTreeUtil.getParentOfType(leaf, PsiSwitchLabelStatement.class) != null
|| PsiTreeUtil.getParentOfType(leaf, PsiConditionalExpression.class) != null) {
return Result.SELECT_ITEM_AND_FINISH_LOOKUP;
}
return Result.HIDE_LOOKUP;
}
if (c == '[' || c == ']' || c == ')' || c == '>')
return CharFilter.Result.SELECT_ITEM_AND_FINISH_LOOKUP;
if (c == '<' && o instanceof PsiClass) return Result.SELECT_ITEM_AND_FINISH_LOOKUP;
if (c == '(') {
if (o instanceof PsiClass) {
if (PsiJavaPatterns.psiElement()
.afterLeaf(PsiKeyword.NEW)
.accepts(lookup.getPsiElement())) {
return Result.SELECT_ITEM_AND_FINISH_LOOKUP;
}
return Result.HIDE_LOOKUP;
}
if (o instanceof PsiType) {
return Result.HIDE_LOOKUP;
}
}
if ((c == ',' || c == '=') && o instanceof PsiVariable) {
int lookupStart = lookup.getLookupStart();
String name = ((PsiVariable) o).getName();
if (lookupStart >= 0 && name != null && name.equals(lookup.itemPattern(item))) {
return Result.HIDE_LOOKUP;
}
}
if (c == '#'
&& PsiTreeUtil.getParentOfType(lookup.getPsiElement(), PsiDocComment.class) != null) {
if (o instanceof PsiClass) {
return Result.SELECT_ITEM_AND_FINISH_LOOKUP;
}
}
if (c == '(' && PsiKeyword.RETURN.equals(item.getLookupString())) {
return Result.HIDE_LOOKUP;
}
return null;
}