1// Protocol Buffers - Google's data interchange format
2// Copyright 2008 Google Inc. All rights reserved.
3// https://developers.google.com/protocol-buffers/
4//
5// Redistribution and use in source and binary forms, with or without
6// modification, are permitted provided that the following conditions are
7// met:
8//
9// * Redistributions of source code must retain the above copyright
10// notice, this list of conditions and the following disclaimer.
11// * Redistributions in binary form must reproduce the above
12// copyright notice, this list of conditions and the following disclaimer
13// in the documentation and/or other materials provided with the
14// distribution.
15// * Neither the name of Google Inc. nor the names of its
16// contributors may be used to endorse or promote products derived from
17// this software without specific prior written permission.
18//
19// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30
31// This header file defines an internal class that encapsulates internal message
32// metadata (Unknown-field set, Arena pointer, ...) and allows its
33// representation to be made more space-efficient via various optimizations.
34//
35// Note that this is distinct from google::protobuf::Metadata, which encapsulates
36// Descriptor and Reflection pointers.
37
38#ifndef GOOGLE_PROTOBUF_METADATA_H__
39#define GOOGLE_PROTOBUF_METADATA_H__
40
41#include <google/protobuf/metadata_lite.h>
42#include <google/protobuf/unknown_field_set.h>
43
44#ifdef SWIG
45#error "You cannot SWIG proto headers"
46#endif
47
48namespace google {
49namespace protobuf {
50namespace internal {
51
52class InternalMetadataWithArena
53 : public InternalMetadataWithArenaBase<UnknownFieldSet,
54 InternalMetadataWithArena> {
55 public:
56 InternalMetadataWithArena() {}
57 explicit InternalMetadataWithArena(Arena* arena)
58 : InternalMetadataWithArenaBase<UnknownFieldSet,
59 InternalMetadataWithArena>(arena) {}
60
61 void DoSwap(UnknownFieldSet* other) { mutable_unknown_fields()->Swap(other); }
62
63 void DoMergeFrom(const UnknownFieldSet& other) {
64 mutable_unknown_fields()->MergeFrom(other);
65 }
66
67 void DoClear() { mutable_unknown_fields()->Clear(); }
68
69 static const UnknownFieldSet& default_instance() {
70 return *UnknownFieldSet::default_instance();
71 }
72};
73
74} // namespace internal
75} // namespace protobuf
76} // namespace google
77
78#endif // GOOGLE_PROTOBUF_METADATA_H__
79