Mercurial > hg > Members > sugi > MessagePack-java

comparison src/main/java/org/msgpack/template/ValueTemplate.java @ 0:cb825acd883a

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author sugi
date Sat, 18 Oct 2014 15:06:15 +0900
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1 //
2 // MessagePack for Java
3 //
4 // Copyright (C) 2009 - 2013 FURUHASHI Sadayuki
5 //
6 // Licensed under the Apache License, Version 2.0 (the "License");
7 // you may not use this file except in compliance with the License.
8 // You may obtain a copy of the License at
9 //
10 // http://www.apache.org/licenses/LICENSE-2.0
11 //
12 // Unless required by applicable law or agreed to in writing, software
13 // distributed under the License is distributed on an "AS IS" BASIS,
14 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 // See the License for the specific language governing permissions and
16 // limitations under the License.
17 //
18 package org.msgpack.template;
19
20 import java.io.IOException;
21 import org.msgpack.packer.Packer;
22 import org.msgpack.unpacker.Unpacker;
23 import org.msgpack.MessageTypeException;
24 import org.msgpack.type.Value;
25
26 public class ValueTemplate extends AbstractTemplate<Value> {
27 private ValueTemplate() {
28 }
29
30 public void write(Packer pk, Value target, boolean required)
31 throws IOException {
32 if (target == null) {
33 if (required) {
34 throw new MessageTypeException("Attempted to write null");
35 }
36 pk.writeNil();
37 return;
38 }
39 target.writeTo(pk);
40 }
41
42 public Value read(Unpacker u, Value to, boolean required)
43 throws IOException {
44 if (!required && u.trySkipNil()) {
45 return null;
46 }
47 return u.readValue();
48 }
49
50 static public ValueTemplate getInstance() {
51 return instance;
52 }
53
54 static final ValueTemplate instance = new ValueTemplate();
55 }