31 lines
1.2 KiB
Java
31 lines
1.2 KiB
Java
package us.myles.ViaVersion.compatibility.unsafe;
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import us.myles.ViaVersion.compatibility.ForcefulFieldModifier;
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import java.lang.reflect.Field;
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import java.util.Objects;
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@SuppressWarnings({
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"java:S1191", // SonarLint/-Qube/-Cloud: We need Unsafe for the modifier implementation.
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"java:S3011", // ^: We need to circumvent the access restrictions of fields.
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})
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public final class UnsafeBackedForcefulFieldModifier implements ForcefulFieldModifier {
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private final sun.misc.Unsafe unsafe;
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public UnsafeBackedForcefulFieldModifier() throws ReflectiveOperationException {
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final Field theUnsafeField = sun.misc.Unsafe.class.getDeclaredField("theUnsafe");
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theUnsafeField.setAccessible(true);
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this.unsafe = (sun.misc.Unsafe) theUnsafeField.get(null);
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}
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@Override
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public void setField(final Field field, final Object holder, final Object object) {
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Objects.requireNonNull(field, "field must not be null");
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final Object ufo = holder != null ? holder : this.unsafe.staticFieldBase(field);
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final long offset = holder != null ? this.unsafe.objectFieldOffset(field) : this.unsafe.staticFieldOffset(field);
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this.unsafe.putObject(ufo, offset, object);
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}
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}
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