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
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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#ifndef GOOGLE_PROTOBUF_GENERATED_ENUM_UTIL_H__
32#define GOOGLE_PROTOBUF_GENERATED_ENUM_UTIL_H__
33
34
35#include <type_traits>
36
37#include <google/protobuf/stubs/strutil.h>
38#include <google/protobuf/message_lite.h>
39
40// Must be included last.
41#include <google/protobuf/port_def.inc>
42
43#ifdef SWIG
44#error "You cannot SWIG proto headers"
45#endif
46
47namespace google {
48namespace protobuf {
49
50// This type trait can be used to cause templates to only match proto2 enum
51// types.
52template <typename T>
53struct is_proto_enum : ::std::false_type {};
54
55namespace internal {
56
57// The table entry format for storing enum name-to-value mapping used with lite
58// protos. This struct and the following related functions should only be used
59// by protobuf generated code.
60struct EnumEntry {
61 StringPiece name;
62 int value;
63};
64
65// Looks up a numeric enum value given the string name.
66PROTOBUF_EXPORT bool LookUpEnumValue(const EnumEntry* enums, size_t size,
67 StringPiece name, int* value);
68
69// Looks up an enum name given the numeric value.
70PROTOBUF_EXPORT int LookUpEnumName(const EnumEntry* enums,
71 const int* sorted_indices, size_t size,
72 int value);
73
74// Initializes the list of enum names in std::string form.
75PROTOBUF_EXPORT bool InitializeEnumStrings(
76 const EnumEntry* enums, const int* sorted_indices, size_t size,
77 internal::ExplicitlyConstructed<std::string>* enum_strings);
78
79} // namespace internal
80} // namespace protobuf
81} // namespace google
82
83#include <google/protobuf/port_undef.inc>
84
85#endif // GOOGLE_PROTOBUF_GENERATED_ENUM_UTIL_H__
86