71 lines
1.7 KiB
Java
71 lines
1.7 KiB
Java
/*
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* Copyright 2017 Christian Basler
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package ch.dissem.msgpack.types;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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/**
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* Representation of msgpack encoded nil / null.
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*/
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public class MPNil implements MPType<Void> {
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private final static int NIL = 0xC0;
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public Void getValue() {
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return null;
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}
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public void pack(OutputStream out) throws IOException {
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out.write(NIL);
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}
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@Override
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public int hashCode() {
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return 0;
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}
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@Override
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public boolean equals(Object o) {
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return o instanceof MPNil;
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}
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@Override
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public String toString() {
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return "null";
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}
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@Override
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public String toJson() {
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return "null";
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}
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public static class Unpacker implements MPType.Unpacker<MPNil> {
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public boolean is(int firstByte) {
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return firstByte == NIL;
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}
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public MPNil unpack(int firstByte, InputStream in) {
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if (firstByte != NIL) {
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throw new IllegalArgumentException(String.format("0xC0 expected but was 0x%02x", firstByte));
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}
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return new MPNil();
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}
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}
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}
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