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Fix Java 12+ compatibility

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This commit is contained in:
KennyTV
2019-12-21 21:21:25 +01:00
parent 39faa740a2
commit 8569359d8f
7 changed files with 49 additions and 81 deletions
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45
worldedit-core/src/main/java/com/boydti/fawe/util/ReflectionUtils.java
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@ -78,7 +78,7 @@ public class ReflectionUtils {
}
public static Object makeEnum(Class<?> enumClass, String value, int ordinal,
Class<?>[] additionalTypes, Object[] additionalValues) throws Exception {
Class<?>[] additionalTypes, Object[] additionalValues) throws Exception {
Object[] parms = new Object[additionalValues.length + 2];
parms[0] = value;
parms[1] = ordinal;
@ -96,9 +96,8 @@ public class ReflectionUtils {
return ReflectionFactory.getReflectionFactory().newConstructorAccessor(enumClass.getDeclaredConstructor(parameterTypes));
}
public static void setFailsafeFieldValue(Field field, Object target, Object value)
throws NoSuchFieldException, IllegalAccessException {
public static void setAccessibleNonFinal(Field field)
throws NoSuchFieldException, IllegalAccessException, NoSuchMethodException, InvocationTargetException {
// let's make the field accessible
field.setAccessible(true);
@ -106,15 +105,35 @@ public class ReflectionUtils {
// not be final anymore, thus tricking reflection into
// letting us modify the static final field
if (Modifier.isFinal(field.getModifiers())) {
Field modifiersField = Field.class.getDeclaredField("modifiers");
modifiersField.setAccessible(true);
int modifiers = modifiersField.getInt(field);
try {
Field modifiersField = Field.class.getDeclaredField("modifiers");
modifiersField.setAccessible(true);
int modifiers = modifiersField.getInt(field);
// blank out the final bit in the modifiers int
modifiers &= ~Modifier.FINAL;
modifiersField.setInt(field, modifiers);
// 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;
}
}
}
}
}
public static void setFailsafeFieldValue(Field field, Object target, Object value)
throws NoSuchFieldException, IllegalAccessException, NoSuchMethodException, InvocationTargetException {
setAccessibleNonFinal(field);
try {
FieldAccessor fa = ReflectionFactory.getReflectionFactory().newFieldAccessor(field, false);
fa.set(target, value);
@ -124,7 +143,7 @@ public class ReflectionUtils {
}
private static void blankField(Class<?> enumClass, String fieldName)
throws NoSuchFieldException, IllegalAccessException {
throws NoSuchFieldException, IllegalAccessException, NoSuchMethodException, InvocationTargetException {
for (Field field : Class.class.getDeclaredFields()) {
if (field.getName().contains(fieldName)) {
AccessibleObject.setAccessible(new Field[]{field}, true);
@ -134,8 +153,8 @@ public class ReflectionUtils {
}
}
private static void cleanEnumCache(Class<?> enumClass)
throws NoSuchFieldException, IllegalAccessException {
static void cleanEnumCache(Class<?> enumClass)
throws NoSuchFieldException, IllegalAccessException, NoSuchMethodException, InvocationTargetException {
blankField(enumClass, "enumConstantDirectory"); // Sun (Oracle?!?) JDK 1.5/6
blankField(enumClass, "enumConstants"); // IBM JDK
}