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
|
// 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.
#ifndef GOOGLE_PROTOBUF_ANY_H__
#define GOOGLE_PROTOBUF_ANY_H__
#include <string>
#include <google/protobuf/stubs/common.h>
#include <google/protobuf/descriptor.h>
#include <google/protobuf/message.h>
#include <google/protobuf/arenastring.h>
namespace google {
namespace protobuf {
namespace internal {
// Helper class used to implement google::protobuf::Any.
class LIBPROTOBUF_EXPORT AnyMetadata {
typedef ArenaStringPtr UrlType;
typedef ArenaStringPtr ValueType;
public:
// AnyMetadata does not take ownership of "type_url" and "value".
AnyMetadata(UrlType* type_url, ValueType* value);
// Packs a message using the default type URL prefix: "type.googleapis.com".
// The resulted type URL will be "type.googleapis.com/<message_full_name>".
void PackFrom(const Message& message);
// Packs a message using the given type URL prefix. The type URL will be
// constructed by concatenating the message type's full name to the prefix
// with an optional "/" separator if the prefix doesn't already end up "/".
// For example, both PackFrom(message, "type.googleapis.com") and
// PackFrom(message, "type.googleapis.com/") yield the same result type
// URL: "type.googleapis.com/<message_full_name>".
void PackFrom(const Message& message, const string& type_url_prefix);
// Unpacks the payload into the given message. Returns false if the message's
// type doesn't match the type specified in the type URL (i.e., the full
// name after the last "/" of the type URL doesn't match the message's actaul
// full name) or parsing the payload has failed.
bool UnpackTo(Message* message) const;
// Checks whether the type specified in the type URL matches the given type.
// A type is consdiered matching if its full name matches the full name after
// the last "/" in the type URL.
template<typename T>
bool Is() const {
return InternalIs(T::default_instance().GetDescriptor());
}
private:
bool InternalIs(const Descriptor* message) const;
UrlType* type_url_;
ValueType* value_;
GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(AnyMetadata);
};
extern const char kAnyFullTypeName[]; // "google.protobuf.Any".
extern const char kTypeGoogleApisComPrefix[]; // "type.googleapis.com/".
extern const char kTypeGoogleProdComPrefix[]; // "type.googleprod.com/".
// Get the proto type name from Any::type_url value. For example, passing
// "type.googleapis.com/rpc.QueryOrigin" will return "rpc.QueryOrigin" in
// *full_type_name. Returns false if type_url does not start with
// "type.googleapis.com" or "type.googleprod.com".
bool ParseAnyTypeUrl(const string& type_url, string* full_type_name);
// See if message is of type google.protobuf.Any, if so, return the descriptors
// for "type_url" and "value" fields.
bool GetAnyFieldDescriptors(const Message& message,
const FieldDescriptor** type_url_field,
const FieldDescriptor** value_field);
} // namespace internal
} // namespace protobuf
} // namespace google
#endif // GOOGLE_PROTOBUF_ANY_H__
|
