72 lines
2.9 KiB
Java
72 lines
2.9 KiB
Java
package net.seanomik.tamablefoxes.util;
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import net.seanomik.tamablefoxes.util.io.Config;
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import net.seanomik.tamablefoxes.util.io.LanguageConfig;
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import org.bukkit.Bukkit;
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import org.bukkit.ChatColor;
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import sun.misc.Unsafe;
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import sun.misc.Unsafe;
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import java.lang.reflect.Field;
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import java.lang.reflect.Modifier;
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import java.security.AccessController;
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import java.security.PrivilegedAction;
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public final class FieldHelper {
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public static void setFieldUsingUnsafe(final Field field, final Object object, final Object newValue) {
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try {
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field.setAccessible(true);
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int fieldModifiersMask = field.getModifiers();
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boolean isFinalModifierPresent = (fieldModifiersMask & Modifier.FINAL) == Modifier.FINAL;
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if (isFinalModifierPresent) {
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AccessController.doPrivileged((PrivilegedAction<Object>) () -> {
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try {
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sun.misc.Unsafe unsafe = getUnsafe();
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long offset = unsafe.objectFieldOffset(field);
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setFieldUsingUnsafe(object, field.getType(), offset, newValue, unsafe);
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return null;
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} catch (Throwable t) {
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throw new RuntimeException(t);
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}
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});
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} else {
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try {
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field.set(object, newValue);
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} catch (IllegalAccessException ex) {
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throw new RuntimeException(ex);
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}
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}
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} catch (SecurityException ex) {
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throw new RuntimeException(ex);
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}
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}
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private static sun.misc.Unsafe getUnsafe() throws IllegalArgumentException, IllegalAccessException, NoSuchFieldException, SecurityException {
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Field field = sun.misc.Unsafe.class.getDeclaredField("theUnsafe");
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field.setAccessible(true);
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return (sun.misc.Unsafe) field.get(null);
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}
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private static void setFieldUsingUnsafe(Object base, Class type, long offset, Object newValue, Unsafe unsafe) {
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if (type == Integer.TYPE) {
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unsafe.putInt(base, offset, ((Integer) newValue));
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} else if (type == Short.TYPE) {
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unsafe.putShort(base, offset, ((Short) newValue));
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} else if (type == Long.TYPE) {
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unsafe.putLong(base, offset, ((Long) newValue));
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} else if (type == Byte.TYPE) {
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unsafe.putByte(base, offset, ((Byte) newValue));
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} else if (type == Boolean.TYPE) {
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unsafe.putBoolean(base, offset, ((Boolean) newValue));
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} else if (type == Float.TYPE) {
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unsafe.putFloat(base, offset, ((Float) newValue));
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} else if (type == Double.TYPE) {
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unsafe.putDouble(base, offset, ((Double) newValue));
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} else if (type == Character.TYPE) {
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unsafe.putChar(base, offset, ((Character) newValue));
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} else {
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unsafe.putObject(base, offset, newValue);
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}
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}
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} |