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/*
* @test /nodynamiccopyright/
* @bug 8262891 8269146 8269113 8348928
* @summary Verify errors related to pattern switches.
* @compile/fail/ref=SwitchErrors.out -XDrawDiagnostics -XDshould-stop.at=FLOW SwitchErrors.java
*/
public class SwitchErrors {
void incompatibleSelectorObjectString(Object o) {
switch (o) {
case "A": break;
case CharSequence cs: break;
}
}
void incompatibleSelectorObjectInteger(Object o) {
switch (o) {
case 1: break;
case CharSequence cs: break;
}
}
void incompatibleSelectorIntegerString(Integer i) {
switch (i) {
case "A": break;
case CharSequence cs: break;
}
}
void incompatibleSelectorPrimitive(int i) {
switch (i) {
case null: break;
case "A": break;
case CharSequence cs: break;
}
}
void totalAndDefault1(Object o) {
switch (o) {
case Object obj: break;
default: break;
}
}
void totalAndDefault2(Object o) {
switch (o) {
case Object obj: break;
case null, default: break;
}
}
void totalAndDefault3(Object o) {
switch (o) {
default: break;
case Object obj: break;
}
}
void duplicatedTotal(Object o) {
switch (o) {
case Object obj: break;
case Object obj: break;
}
}
void duplicatedDefault1(Object o) {
switch (o) {
case null, default: break;
default: break;
}
}
void duplicatedDefault2(Object o) {
switch (o) {
case default: break;
default: break;
}
}
void duplicatedDefault3(Object o) {
switch (o) {
case default, default: break;
}
}
void duplicatedNullCase1(Object o) {
switch (o) {
case null: break;
case null: break;
}
}
void duplicatedNullCase2(Object o) {
switch (o) {
case null, null: break;
}
}
void duplicatedTypePatterns1(Object o) {
switch (o) {
case String s, Integer i: break;
}
}
void duplicatedTypePatterns2(Object o) {
switch (o) {
case String s:
case Integer i: break;
}
}
void duplicatedTypePatterns3(Object o) {
switch (o) {
case String s:
System.err.println(1);
case Integer i: break;
}
}
void flowIntoTypePatterns(Object o) {
switch (o) {
case null:
System.err.println(1);
case Integer i: break;
}
}
void incompatible1(String str) {
switch (str) {
case Integer i: break;
default: break;
}
}
void incompatible2(java.util.List l) {
switch (l) {
case java.util.List<Integer> l2: break;
}
}
void erroneous(Object o) {
switch (o) {
case String s: break;
case Undefined u: break;
case Integer i: break;
default: break;
}
}
void patternAndDefault1(Object o) {
switch (o) {
case String s, default: break;
}
}
void patternAndDefault2(Object o) {
switch (o) {
case String s:
case default: break;
}
}
void patternAndDefault3(Object o) {
switch (o) {
case default, String s: break;
}
}
void patternAndDefault4(Object o) {
switch (o) {
case default:
case String s: break;
}
}
void sealedNonAbstract(SealedNonAbstract obj) {
switch (obj) {//does not cover SealedNonAbstract
case A a -> {}
}
}
sealed class SealedNonAbstract permits A {}
final class A extends SealedNonAbstract {}
void errorRecoveryNoPattern1(Object o) {
switch (o) {
case String: break;
case Object obj: break;
}
}
Object guardWithMatchingStatement(Object o1, Object o2) {
switch (o1) {
case String s when s.isEmpty() || o2 instanceof Number n: return n;
default: return null;
}
}
Object guardWithMatchingExpression(Object o1, Object o2) {
return switch (o1) {
case String s when s.isEmpty() || o2 instanceof Number n -> n;
default -> null;
};
}
void test8269146a1(Integer i) {
switch (i) {
//error - illegal combination of pattern and constant:
case 1, Integer o when o != null:
break;
default:
break;
}
}
void test8269146a2a(Integer i) {
switch (i) {
//error - illegal combination of pattern and constant:
case Integer o, 1:
break;
default:
break;
}
}
void test8269146b(Integer i) {
switch (i) {
//error - illegal combination of null and pattern other than type pattern:
case null, Integer o when o != null:
break;
default:
break;
}
}
void test8269146c(Integer i) {
switch (i) {
//error - illegal combination of pattern and default:
case Integer o, default:
break;
}
}
void test8269301a(Integer i) {
switch (i) {
//error - illegal combination of pattern, constant and default
case 1, Integer o, default:
break;
}
}
void test8269301ba(Integer i) {
switch (i) {
//error - illegal combination of pattern, constant and default
case Integer o, 1, default:
break;
}
}
void exhaustiveAndNull(String s) {
switch (s) {
case null: break;
}
}
void referenceTypeTotalForNull() {
switch (null) {
case String s: break;
case CharSequence cs: break;
}
}
void nullAndParenthesized1(Object o) {
record R(Object o) {}
switch (o) {
case null, R r: break;
default: break;
}
}
void nullAndParenthesized2(Object o) {
record R(Object o) {}
switch (o) {
case null, R(var v): break;
default: break;
}
}
void nullAndParenthesized3(Object o) {
record R(Object o) {}
switch (o) {
case R r: case null: break;
default: break;
}
}
void nullAndParenthesized4(Object o) {
record R(Object o) {}
switch (o) {
case R(var v): case null: break;
default: break;
}
}
void noDiamond(Object o) {
record R<T>(T t) {}
switch (o) {
case R<> r -> {}
default -> {}
}
if (o instanceof R<> r) {}
}
void noRawInferenceNonDeconstruction() {
record R<T>(T t) {}
R<String> o = null;
switch (o) {
case R r -> System.out.println(r.t().length());
}
if (o instanceof R r) System.out.println(r.t().length());
}
void cannotInfer() {
interface A<T> {}
record R<T extends Number>() implements A<T> {}
A<String> i = null;
if (i instanceof R()) {
}
}
void test8269146a2b(Integer i) {
switch (i) {
//error - illegal combination of pattern and constant:
case Integer o when o != null, 1:
break;
default:
break;
}
}
void test8269301ab(Integer i) {
switch (i) {
//error - illegal combination of pattern, constant and default
case 1, Integer o when o != null, default:
break;
}
}
void test8269301bb(Integer i) {
switch (i) {
//error - illegal combination of pattern, constant and default
case Integer o when o != null, 1, default:
break;
}
}
void testPatternWithoutBindingCantOverridePatternWithBinding8348928a(Object o) {
record R(int i, String s) {}
switch (o) {
case Integer _, R(int x, String _) -> {}
default -> {}
}
}
void testPatternWithoutBindingCantOverridePatternWithBinding8348928b(Object o) {
record R(int i, String s) {}
switch (o) {
case Integer _:
case R(int x, String _):
break;
default:
}
}
}
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