1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
package com.google.protobuf;
import static com.google.protobuf.Internal.checkNotNull;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
/**
* Information for the layout of a protobuf message class. This describes all of the fields
* contained within a message.
*/
@ExperimentalApi
public final class MessageInfo {
private final ProtoSyntax syntax;
private final boolean messageSetWireFormat;
private final List<FieldInfo> fields;
/**
* Constructor.
*
* @param fields the set of fields for the message.
*/
private MessageInfo(ProtoSyntax syntax, boolean messageSetWireFormat, List<FieldInfo> fields) {
this.syntax = syntax;
this.messageSetWireFormat = messageSetWireFormat;
this.fields = fields;
}
/** Gets the syntax for the message (e.g. PROTO2, PROTO3). */
public ProtoSyntax getSyntax() {
return syntax;
}
/** Indicates whether or not the message should be represented with message set wire format. */
public boolean isMessageSetWireFormat() {
return messageSetWireFormat;
}
/**
* Gets the information for all fields within this message, sorted in ascending order by their
* field number.
*/
public List<FieldInfo> getFields() {
return fields;
}
/** Creates a new map of field number to message class for message fields. */
public Int2ObjectHashMap<Class<?>> messageFieldClassMap() {
Int2ObjectHashMap<Class<?>> classMap = new Int2ObjectHashMap<Class<?>>();
for (int i = 0; i < fields.size(); ++i) {
FieldInfo fd = fields.get(i);
int fieldNumber = fd.getFieldNumber();
// Configure messages
switch (fd.getType()) {
case MESSAGE:
classMap.put(fieldNumber, fd.getField().getType());
break;
case MESSAGE_LIST:
classMap.put(fieldNumber, fd.getListElementType());
break;
case GROUP:
classMap.put(fieldNumber, fd.getField().getType());
break;
case GROUP_LIST:
classMap.put(fieldNumber, fd.getListElementType());
break;
default:
break;
}
}
return classMap;
}
/** Helper method for creating a new builder for {@link MessageInfo}. */
public static Builder newBuilder() {
return new Builder();
}
/** Helper method for creating a new builder for {@link MessageInfo}. */
public static Builder newBuilder(int numFields) {
return new Builder(numFields);
}
/** A builder of {@link MessageInfo} instances. */
public static final class Builder {
private final ArrayList<FieldInfo> fields;
private ProtoSyntax syntax;
private boolean wasBuilt;
private boolean messageSetWireFormat;
public Builder() {
fields = new ArrayList<FieldInfo>();
}
public Builder(int numFields) {
fields = new ArrayList<FieldInfo>(numFields);
}
public void withSyntax(ProtoSyntax syntax) {
this.syntax = checkNotNull(syntax, "syntax");
}
public void withMessageSetWireFormat(boolean messageSetWireFormat) {
this.messageSetWireFormat = messageSetWireFormat;
}
public void add(FieldInfo field) {
if (wasBuilt) {
throw new IllegalStateException("Builder can only build once");
}
fields.add(field);
}
public MessageInfo build() {
if (wasBuilt) {
throw new IllegalStateException("Builder can only build once");
}
if (syntax == null) {
throw new IllegalStateException("Must specify a proto syntax");
}
wasBuilt = true;
Collections.sort(fields);
return new MessageInfo(syntax, messageSetWireFormat, Collections.unmodifiableList(fields));
}
}
}
|
