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[java-inspections] Fix false warnings on signature polymorphic method lookup

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PR#2804
Reviewed-by: Tagir Valeev <tagir.valeev@jetbrains.com>

GitOrigin-RevId: 28a1abe7b3d83e40737df88c5ce1d39933858755
This commit is contained in:
SirYwell
2024-07-17 09:52:50 +02:00
committed by intellij-monorepo-bot
parent 6b35e2cece
commit f49ee04957
3 changed files with 43 additions and 0 deletions
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18
java/java-tests/testData/inspection/invokeHandleSignature/SignaturePolymorphic.java Normal file
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import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;
import java.lang.invoke.VarHandle;
class SignaturePolymorphic {
public static void main(String... args) throws Throwable {
// signature polymorphic methods allow any lookup, do not warn
MethodHandles.lookup().findVirtual(MethodHandle.class, "invoke", MethodType.methodType(int.class, String.class, double.class));
MethodHandles.lookup().findVirtual(VarHandle.class, "compareAndSet", MethodType.methodType(int.class, String.class, double.class));
// static lookup still warns as the methods are virtual
MethodHandles.lookup().<warning descr="Method 'invoke' is not static">findStatic</warning>(MethodHandle.class, "invoke", MethodType.methodType(int.class, String.class, double.class));
MethodHandles.lookup().<warning descr="Method 'compareAndSet' is not static">findStatic</warning>(VarHandle.class, "compareAndSet", MethodType.methodType(int.class, String.class, double.class));
// unrelated methods in the relevant classes cause warnings
MethodHandles.lookup().findVirtual(MethodHandle.class, "toString", <warning descr="Cannot resolve method 'int toString(String, double)'">MethodType.methodType(int.class, String.class, double.class)</warning>);
MethodHandles.lookup().findVirtual(VarHandle.class, "toString", <warning descr="Cannot resolve method 'int toString(String, double)'">MethodType.methodType(int.class, String.class, double.class)</warning>);
}
}