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Merge pull request #343 from mathiascode/openj9-13

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Add support for OpenJ9 13
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Matt 2020-03-02 10:45:18 -05:00 committed by GitHub
commit 589c59768f
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1 changed files with 8 additions and 18 deletions
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26
worldedit-core/src/main/java/com/boydti/fawe/util/ReflectionUtils.java
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@ -1,5 +1,6 @@
package com.boydti.fawe.util;
import java.lang.invoke.MethodHandles;
import java.lang.reflect.AccessibleObject;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
@ -32,26 +33,15 @@ public class ReflectionUtils {
// letting us modify the static final field
if (Modifier.isFinal(field.getModifiers())) {
try {
Field modifiersField = Field.class.getDeclaredField("modifiers");
modifiersField.setAccessible(true);
int modifiers = modifiersField.getInt(field);
Field lookupField = MethodHandles.Lookup.class.getDeclaredField("IMPL_LOOKUP");
lookupField.setAccessible(true);
// blank out the final bit in the modifiers int
modifiers &= ~Modifier.FINAL;
modifiersField.setInt(field, modifiers);
} catch (NoSuchFieldException e) {
// Java 12+ compatibility - search fields with hidden method for modifiers
// same concept as above, just with a more hacky way of getting to the modifiers
Method getDeclaredFields0 = Class.class.getDeclaredMethod("getDeclaredFields0", boolean.class);
getDeclaredFields0.setAccessible(true);
Field[] fields = (Field[]) getDeclaredFields0.invoke(Field.class, false);
for (Field classField : fields) {
if ("modifiers".equals(classField.getName())) {
classField.setAccessible(true);
classField.set(field, field.getModifiers() & ~Modifier.FINAL);
break;
}
}
((MethodHandles.Lookup) lookupField.get(null))
.findSetter(Field.class, "modifiers", int.class)
.invokeExact(field, field.getModifiers() & ~Modifier.FINAL);
} catch (Throwable e) {
e.printStackTrace();
}
}
}