Mercurial > hg > Members > sugi > MessagePack-java

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

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author sugi
date Sat, 18 Oct 2014 15:06:15 +0900
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-1:000000000000 0:cb825acd883a
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
25 public class DoubleArrayTemplate extends AbstractTemplate<double[]> {
26 private DoubleArrayTemplate() {
27 }
28
29 public void write(Packer pk, double[] target, boolean required)
30 throws IOException {
31 if (target == null) {
32 if (required) {
33 throw new MessageTypeException("Attempted to write null");
34 }
35 pk.writeNil();
36 return;
37 }
38 pk.writeArrayBegin(target.length);
39 for (double a : target) {
40 pk.write(a);
41 }
42 pk.writeArrayEnd();
43 }
44
45 public double[] read(Unpacker u, double[] to, boolean required)
46 throws IOException {
47 if (!required && u.trySkipNil()) {
48 return null;
49 }
50 int n = u.readArrayBegin();
51 if (to == null || to.length != n) {
52 to = new double[n];
53 }
54 for (int i = 0; i < n; i++) {
55 to[i] = u.readDouble();
56 }
57 u.readArrayEnd();
58 return to;
59 }
60
61 static public DoubleArrayTemplate getInstance() {
62 return instance;
63 }
64
65 static final DoubleArrayTemplate instance = new DoubleArrayTemplate();
66 }