53 lines
1.5 KiB
Java
53 lines
1.5 KiB
Java
package com.pretzel.dev.villagertradelimiter.nms.utils;
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import java.lang.reflect.Field;
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import java.lang.reflect.Method;
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import java.lang.reflect.Modifier;
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import com.pretzel.dev.villagertradelimiter.nms.NbtApiException;
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public final class ReflectionUtil {
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private static Field field_modifiers;
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static {
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try {
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field_modifiers = Field.class.getDeclaredField("modifiers");
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field_modifiers.setAccessible(true);
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} catch (NoSuchFieldException ex) {
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try {
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// This hacky workaround is for newer jdk versions 11+?
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Method fieldGetter = Class.class.getDeclaredMethod("getDeclaredFields0", boolean.class);
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fieldGetter.setAccessible(true);
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Field[] fields = (Field[]) fieldGetter.invoke(Field.class, false);
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for (Field f : fields)
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if (f.getName().equals("modifiers")) {
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field_modifiers = f;
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field_modifiers.setAccessible(true);
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break;
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}
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} catch (Exception e) {
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throw new NbtApiException(e);
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}
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}
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if (field_modifiers == null) {
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throw new NbtApiException("Unable to init the modifiers Field.");
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}
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}
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public static Field makeNonFinal(Field field) throws IllegalArgumentException, IllegalAccessException {
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int mods = field.getModifiers();
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if (Modifier.isFinal(mods)) {
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field_modifiers.set(field, mods & ~Modifier.FINAL);
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}
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return field;
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}
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public static void setFinal(Object obj, Field field, Object newValue)
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throws IllegalArgumentException, IllegalAccessException {
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field.setAccessible(true);
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field = makeNonFinal(field);
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field.set(obj, newValue);
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}
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} |