@Nullable
private static PsiType getLeastUpperBoundForNumericType(
@NotNull PsiType lType, @NotNull PsiType rType) {
String lCanonical = lType.getCanonicalText();
String rCanonical = rType.getCanonicalText();
if (JAVA_LANG_FLOAT.equals(lCanonical)) lCanonical = JAVA_LANG_DOUBLE;
if (JAVA_LANG_FLOAT.equals(rCanonical)) rCanonical = JAVA_LANG_DOUBLE;
if (TYPE_TO_RANK.containsKey(lCanonical) && TYPE_TO_RANK.containsKey(rCanonical)) {
return TYPE_TO_RANK.get(lCanonical) > TYPE_TO_RANK.get(rCanonical) ? lType : rType;
}
return null;
}
@Nullable
public static PsiType rawSecondGeneric(PsiType type, Project project) {
if (!(type instanceof PsiClassType)) return null;
final PsiClassType.ClassResolveResult result = ((PsiClassType) type).resolveGenerics();
final PsiClass element = result.getElement();
if (element == null) return null;
final PsiType[] parameters = ((PsiClassType) type).getParameters();
boolean changed = false;
for (int i = 0; i < parameters.length; i++) {
PsiType parameter = parameters[i];
if (parameter == null) continue;
final Ref<PsiType> newParam = new Ref<PsiType>();
parameter.accept(
new PsiTypeVisitorEx<Object>() {
@Nullable
@Override
public Object visitClassType(PsiClassType classType) {
if (classType.getParameterCount() > 0) {
newParam.set(classType.rawType());
}
return null;
}
@Nullable
@Override
public Object visitCapturedWildcardType(PsiCapturedWildcardType capturedWildcardType) {
newParam.set(capturedWildcardType.getWildcard().getBound());
return null;
}
@Nullable
@Override
public Object visitWildcardType(PsiWildcardType wildcardType) {
newParam.set(wildcardType.getBound());
return null;
}
});
if (!newParam.isNull()) {
changed = true;
parameters[i] = newParam.get();
}
}
if (!changed) return null;
return JavaPsiFacade.getElementFactory(project).createType(element, parameters);
}
public static boolean isNumericType(@Nullable PsiType type) {
if (type instanceof PsiClassType) {
return TYPE_TO_RANK.contains(type.getCanonicalText());
}
return type instanceof PsiPrimitiveType && TypeConversionUtil.isNumericType(type);
}
private static PsiType genNewListBy(PsiType genericOwner, PsiManager manager) {
PsiClass list =
JavaPsiFacade.getInstance(manager.getProject())
.findClass(JAVA_UTIL_LIST, genericOwner.getResolveScope());
PsiElementFactory factory = JavaPsiFacade.getElementFactory(manager.getProject());
if (list == null) return factory.createTypeFromText(JAVA_UTIL_LIST, null);
return factory.createType(list, PsiUtil.extractIterableTypeParameter(genericOwner, false));
}
private static PsiType genNewMapBy(PsiType genericOwner, PsiManager manager) {
PsiClass map =
JavaPsiFacade.getInstance(manager.getProject())
.findClass(JAVA_UTIL_MAP, genericOwner.getResolveScope());
PsiElementFactory factory = JavaPsiFacade.getElementFactory(manager.getProject());
if (map == null) return factory.createTypeFromText(JAVA_UTIL_MAP, null);
final PsiType key = PsiUtil.substituteTypeParameter(genericOwner, JAVA_UTIL_MAP, 0, false);
final PsiType value = PsiUtil.substituteTypeParameter(genericOwner, JAVA_UTIL_MAP, 1, false);
return factory.createType(map, key, value);
}
public static boolean isAssignableWithoutConversions(
@Nullable PsiType lType, @Nullable PsiType rType, @NotNull PsiElement context) {
if (lType == null || rType == null) return false;
if (rType == PsiType.NULL) {
return !(lType instanceof PsiPrimitiveType);
}
PsiManager manager = context.getManager();
GlobalSearchScope scope = context.getResolveScope();
if (rType instanceof GrTupleType && ((GrTupleType) rType).getComponentTypes().length == 0) {
if (lType instanceof PsiArrayType
|| InheritanceUtil.isInheritor(lType, JAVA_UTIL_LIST)
|| InheritanceUtil.isInheritor(lType, JAVA_UTIL_SET)) {
return true;
}
}
if (isClassType(rType, GROOVY_LANG_GSTRING) && lType.equalsToText(JAVA_LANG_STRING)) {
return true;
}
if (isNumericType(lType) && isNumericType(rType)) {
lType = unboxPrimitiveTypeWrapper(lType);
if (isClassType(lType, JAVA_MATH_BIG_DECIMAL)) lType = PsiType.DOUBLE;
rType = unboxPrimitiveTypeWrapper(rType);
if (isClassType(rType, JAVA_MATH_BIG_DECIMAL)) rType = PsiType.DOUBLE;
} else {
rType = boxPrimitiveType(rType, manager, scope);
lType = boxPrimitiveType(lType, manager, scope);
}
if (rType instanceof GrMapType || rType instanceof GrTupleType) {
Boolean result = isAssignableForNativeTypes(lType, (PsiClassType) rType, context);
if (result != null && result.booleanValue()) return true;
}
if (TypeConversionUtil.isAssignable(lType, rType)) {
return true;
}
return false;
}
@Nullable
public static PsiType getLeastUpperBound(
@NotNull PsiType type1, @NotNull PsiType type2, PsiManager manager) {
if (type1 instanceof GrTupleType && type2 instanceof GrTupleType) {
GrTupleType tuple1 = (GrTupleType) type1;
GrTupleType tuple2 = (GrTupleType) type2;
PsiType[] components1 = tuple1.getComponentTypes();
PsiType[] components2 = tuple2.getComponentTypes();
if (components1.length == 0) return genNewListBy(type2, manager);
if (components2.length == 0) return genNewListBy(type1, manager);
PsiType[] components3 = new PsiType[Math.min(components1.length, components2.length)];
for (int i = 0; i < components3.length; i++) {
PsiType c1 = components1[i];
PsiType c2 = components2[i];
if (c1 == null || c2 == null) {
components3[i] = null;
} else {
components3[i] = getLeastUpperBound(c1, c2, manager);
}
}
return new GrTupleType(
components3,
JavaPsiFacade.getInstance(manager.getProject()),
tuple1.getScope().intersectWith(tuple2.getResolveScope()));
} else if (checkEmptyListAndList(type1, type2)) {
return genNewListBy(type2, manager);
} else if (checkEmptyListAndList(type2, type1)) {
return genNewListBy(type1, manager);
} else if (type1 instanceof GrMapType && type2 instanceof GrMapType) {
return GrMapType.merge(((GrMapType) type1), ((GrMapType) type2));
} else if (checkEmptyMapAndMap(type1, type2)) {
return genNewMapBy(type2, manager);
} else if (checkEmptyMapAndMap(type2, type1)) {
return genNewMapBy(type1, manager);
} else if (type1 instanceof GrClosureType && type2 instanceof GrClosureType) {
GrClosureType clType1 = (GrClosureType) type1;
GrClosureType clType2 = (GrClosureType) type2;
GrSignature signature1 = clType1.getSignature();
GrSignature signature2 = clType2.getSignature();
if (signature1 instanceof GrClosureSignature && signature2 instanceof GrClosureSignature) {
if (((GrClosureSignature) signature1).getParameterCount()
== ((GrClosureSignature) signature2).getParameterCount()) {
final GrClosureSignature signature =
GrClosureSignatureImpl.getLeastUpperBound(
((GrClosureSignature) signature1), ((GrClosureSignature) signature2), manager);
if (signature != null) {
GlobalSearchScope scope =
clType1.getResolveScope().intersectWith(clType2.getResolveScope());
final LanguageLevel languageLevel =
ComparatorUtil.max(clType1.getLanguageLevel(), clType2.getLanguageLevel());
return GrClosureType.create(
signature,
scope,
JavaPsiFacade.getInstance(manager.getProject()),
languageLevel,
true);
}
}
}
} else if (GroovyCommonClassNames.GROOVY_LANG_GSTRING.equals(type1.getCanonicalText())
&& CommonClassNames.JAVA_LANG_STRING.equals(type2.getInternalCanonicalText())) {
return type2;
} else if (GroovyCommonClassNames.GROOVY_LANG_GSTRING.equals(type2.getCanonicalText())
&& CommonClassNames.JAVA_LANG_STRING.equals(type1.getInternalCanonicalText())) {
return type1;
}
final PsiType result = getLeastUpperBoundForNumericType(type1, type2);
if (result != null) return result;
return GenericsUtil.getLeastUpperBound(type1, type2, manager);
}
@NotNull
public static PsiClassType getJavaLangObject(@NotNull PsiElement context) {
return PsiType.getJavaLangObject(context.getManager(), context.getResolveScope());
}
public static boolean isAssignable(
@Nullable PsiType lType, @Nullable PsiType rType, @NotNull PsiElement context) {
if (lType == null || rType == null) {
return false;
}
if (rType instanceof PsiIntersectionType) {
for (PsiType child : ((PsiIntersectionType) rType).getConjuncts()) {
if (isAssignable(lType, child, context)) {
return true;
}
}
return false;
}
if (lType instanceof PsiIntersectionType) {
for (PsiType child : ((PsiIntersectionType) lType).getConjuncts()) {
if (!isAssignable(child, rType, context)) {
return false;
}
}
return true;
}
if (rType == PsiType.NULL) {
return !(lType instanceof PsiPrimitiveType);
}
if (isNumericType(lType) && isNumericType(rType)) {
return true;
}
if (isClassType(lType, JAVA_LANG_STRING)) {
return true;
}
final PsiManager manager = context.getManager();
final GlobalSearchScope scope = context.getResolveScope();
if (lType instanceof PsiArrayType) {
PsiType lComponentType = ((PsiArrayType) lType).getComponentType();
PsiType rComponentType = ClosureParameterEnhancer.findTypeForIteration(rType, context);
if (rComponentType != null && isAssignable(lComponentType, rComponentType, context)) {
return true;
}
}
if (unboxPrimitiveTypeWrapper(lType) == PsiType.CHAR
&& (isClassType(rType, JAVA_LANG_STRING) || isClassType(rType, GROOVY_LANG_GSTRING))) {
return true;
}
if (isAssignableByMethodCallConversion(lType, rType, context)) return true;
lType = boxPrimitiveType(lType, manager, scope);
rType = boxPrimitiveType(rType, manager, scope);
if (lType.isAssignableFrom(rType)) {
return true;
}
if (context instanceof GroovyPsiElement) {
for (GrTypeConverter converter : GrTypeConverter.EP_NAME.getExtensions()) {
if (!converter.isAllowedInMethodCall()) {
Boolean result = converter.isConvertible(lType, rType, (GroovyPsiElement) context);
if (result != null) {
return result;
}
}
}
}
return false;
}
MyLookupElement(String methodName, @NotNull PsiType expectedType) {
myMethodName = methodName;
myExpectedType = expectedType;
myLookupString = "collect(Collectors." + myMethodName + "())";
myTypeText = myExpectedType.getPresentableText();
}