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// Author: kenton@google.com (Kenton Varda)
32// Based on original Protocol Buffers design by
33// Sanjay Ghemawat, Jeff Dean, and others.
34//
35// This header is logically internal, but is made public because it is used
36// from protocol-compiler-generated code, which may reside in other components.
37
38#ifndef GOOGLE_PROTOBUF_REFLECTION_OPS_H__
39#define GOOGLE_PROTOBUF_REFLECTION_OPS_H__
40
41#include <google/protobuf/stubs/common.h>
42#include <google/protobuf/message.h>
43
44#ifdef SWIG
45#error "You cannot SWIG proto headers"
46#endif
47
48// Must be included last.
49#include <google/protobuf/port_def.inc>
50
51namespace google {
52namespace protobuf {
53namespace internal {
54
55// Basic operations that can be performed using reflection.
56// These can be used as a cheap way to implement the corresponding
57// methods of the Message interface, though they are likely to be
58// slower than implementations tailored for the specific message type.
59//
60// This class should stay limited to operations needed to implement
61// the Message interface.
62//
63// This class is really a namespace that contains only static methods.
64class PROTOBUF_EXPORT ReflectionOps {
65 public:
66 static void Copy(const Message& from, Message* to);
67 static void Merge(const Message& from, Message* to);
68 static void Clear(Message* message);
69 static bool IsInitialized(const Message& message);
70 static bool IsInitialized(const Message& message, bool check_fields,
71 bool check_descendants);
72 static void DiscardUnknownFields(Message* message);
73
74 // Finds all unset required fields in the message and adds their full
75 // paths (e.g. "foo.bar[5].baz") to *names. "prefix" will be attached to
76 // the front of each name.
77 static void FindInitializationErrors(const Message& message,
78 const std::string& prefix,
79 std::vector<std::string>* errors);
80
81 private:
82 // All methods are static. No need to construct.
83 GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(ReflectionOps);
84};
85
86} // namespace internal
87} // namespace protobuf
88} // namespace google
89
90#include <google/protobuf/port_undef.inc>
91
92#endif // GOOGLE_PROTOBUF_REFLECTION_OPS_H__
93