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8199149: Improve the exception message thrown by VarHandle of unsupported operation

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Reviewed-by: liach, jvernee
This commit is contained in:
Mandy Chung 2023-07-20 20:21:32 +00:00
parent 354c6605e3
commit d7b9416406
4 changed files with 12 additions and 5 deletions
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6
src/java.base/share/classes/java/lang/invoke/VarForm.java
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@ -26,6 +26,7 @@ package java.lang.invoke;
import jdk.internal.vm.annotation.DontInline;
import jdk.internal.vm.annotation.ForceInline;
import jdk.internal.vm.annotation.Hidden;
import jdk.internal.vm.annotation.Stable;
import java.lang.invoke.VarHandle.AccessMode;
@ -108,6 +109,7 @@ final class VarForm {
}
@ForceInline
@Hidden
final MemberName getMemberName(int mode) {
// Can be simplified by calling getMemberNameOrNull, but written in this
// form to improve interpreter/coldpath performance.
@ -115,7 +117,7 @@ final class VarForm {
if (mn == null) {
mn = resolveMemberName(mode);
if (mn == null) {
throw new UnsupportedOperationException();
throw new UnsupportedOperationException(AccessMode.valueFromOrdinal(mode).methodName());
}
}
return mn;
@ -132,7 +134,7 @@ final class VarForm {
@DontInline
MemberName resolveMemberName(int mode) {
AccessMode value = AccessMode.values()[mode];
AccessMode value = AccessMode.valueFromOrdinal(mode);
String methodName = value.methodName();
MethodType type = methodType_table[value.at.ordinal()].insertParameterTypes(0, VarHandle.class);
return memberName_table[mode] = MethodHandles.Lookup.IMPL_LOOKUP