UnknownFieldData.java revision cf1b416ae1327a26dd53a691fc1b3e30eec8e6a6 
1// Protocol Buffers - Google's data interchange format
2// Copyright 2013 Google Inc.  All rights reserved.
3// http://code.google.com/p/protobuf/
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30
31package com.google.protobuf.nano;
32
33import java.io.IOException;
34import java.util.Arrays;
35
36/**
37 * Stores unknown fields. These might be extensions or fields that the generated
38 * API doesn't know about yet.
39 *
40 * @author bduff@google.com (Brian Duff)
41 */
42final class UnknownFieldData {
43
44    final int tag;
45    final byte[] bytes;
46
47    UnknownFieldData(int tag, byte[] bytes) {
48        this.tag = tag;
49        this.bytes = bytes;
50    }
51
52    int computeSerializedSize() {
53        int size = 0;
54        size += CodedOutputByteBufferNano.computeRawVarint32Size(tag);
55        size += bytes.length;
56        return size;
57    }
58
59    void writeTo(CodedOutputByteBufferNano output) throws IOException {
60        output.writeRawVarint32(tag);
61        output.writeRawBytes(bytes);
62    }
63
64    @Override
65    public boolean equals(Object o) {
66        if (o == this) {
67            return true;
68        }
69        if (!(o instanceof UnknownFieldData)) {
70            return false;
71        }
72
73        UnknownFieldData other = (UnknownFieldData) o;
74        return tag == other.tag && Arrays.equals(bytes, other.bytes);
75    }
76
77    @Override
78    public int hashCode() {
79        int result = 17;
80        result = 31 * result + tag;
81        result = 31 * result + Arrays.hashCode(bytes);
82        return result;
83    }
84}
85