MemberName.getParameterTypes no longer available in JDK >= 20+27

The method was removed in https://bugs.openjdk.org/browse/JDK-8298177 by openjdk/jdk20u@3de7750
oracle · Jan 12, 2023 · f03c0d2 · f03c0d2
1 parent c3c449d
commit f03c0d2
Showing 1 changed file with 11 additions and 3 deletions.
diff --git a/...rc/com.oracle.svm.hosted/src/com/oracle/svm/hosted/methodhandles/MethodHandleFeature.java b/...rc/com.oracle.svm.hosted/src/com/oracle/svm/hosted/methodhandles/MethodHandleFeature.java
@@ -89,7 +89,8 @@ public class MethodHandleFeature implements InternalFeature {
     private Method memberNameIsMethod;
     private Method memberNameIsConstructor;
     private Method memberNameIsField;
-    private Method memberNameGetParameterTypes;
+    private Method memberNameGetMethodType;
+    private Method methodTypeParameterArray;
     private Field methodHandleInternalForm;
     private Field lambdaFormNames;
     private Field lambdaFormArity;
@@ -121,7 +122,10 @@ public void duringSetup(DuringSetupAccess access) {
         memberNameIsMethod = ReflectionUtil.lookupMethod(memberNameClass, "isMethod");
         memberNameIsConstructor = ReflectionUtil.lookupMethod(memberNameClass, "isConstructor");
         memberNameIsField = ReflectionUtil.lookupMethod(memberNameClass, "isField");
-        memberNameGetParameterTypes = ReflectionUtil.lookupMethod(memberNameClass, "getParameterTypes");
+        memberNameGetMethodType = ReflectionUtil.lookupMethod(memberNameClass, "getMethodType");
+
+        Class<?> methodTypeClass = access.findClassByName("java.lang.invoke.MethodType");
+        methodTypeParameterArray = ReflectionUtil.lookupMethod(methodTypeClass, "parameterArray");
 
         lambdaFormClass = access.findClassByName("java.lang.invoke.LambdaForm");
         lambdaFormNames = ReflectionUtil.lookupField(lambdaFormClass, "names");
@@ -361,7 +365,11 @@ private void registerMemberName(Object memberName) {
             boolean isConstructor = (boolean) memberNameIsConstructor.invoke(memberName);
             boolean isField = (boolean) memberNameIsField.invoke(memberName);
             String name = (isMethod || isField) ? (String) memberNameGetName.invoke(memberName) : null;
-            Class<?>[] paramTypes = (isMethod || isConstructor) ? (Class<?>[]) memberNameGetParameterTypes.invoke(memberName) : null;
+            Class<?>[] paramTypes = null;
+            if (isMethod || isConstructor) {
+                MethodType methodType = (MethodType) memberNameGetMethodType.invoke(memberName);
+                paramTypes = (Class<?>[]) methodTypeParameterArray.invoke(methodType);
+            }
             if (isMethod) {
                 RuntimeReflection.register(declaringClass.getDeclaredMethod(name, paramTypes));
             } else if (isConstructor) {