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// 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. | ||
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#ifndef GOOGLE_PROTOBUF_ANY_H__ | ||
#define GOOGLE_PROTOBUF_ANY_H__ | ||
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#include <string> | ||
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#include <google/protobuf/stubs/common.h> | ||
#include <google/protobuf/arenastring.h> | ||
#include <google/protobuf/message_lite.h> | ||
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#include <google/protobuf/port_def.inc> | ||
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namespace google { | ||
namespace protobuf { | ||
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class FieldDescriptor; | ||
class Message; | ||
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namespace internal { | ||
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extern const char kAnyFullTypeName[]; // "google.protobuf.Any". | ||
extern const char kTypeGoogleApisComPrefix[]; // "type.googleapis.com/". | ||
extern const char kTypeGoogleProdComPrefix[]; // "type.googleprod.com/". | ||
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std::string GetTypeUrl(StringPiece message_name, | ||
StringPiece type_url_prefix); | ||
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// Helper class used to implement google::protobuf::Any. | ||
class PROTOBUF_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); | ||
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// Packs a message using the default type URL prefix: "type.googleapis.com". | ||
// The resulted type URL will be "type.googleapis.com/<message_full_name>". | ||
template <typename T> | ||
void PackFrom(const T& message) { | ||
InternalPackFrom(message, kTypeGoogleApisComPrefix, T::FullMessageName()); | ||
} | ||
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void PackFrom(const Message& message); | ||
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// 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 with "/". | ||
// 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>". | ||
template <typename T> | ||
void PackFrom(const T& message, StringPiece type_url_prefix) { | ||
InternalPackFrom(message, type_url_prefix, T::FullMessageName()); | ||
} | ||
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void PackFrom(const Message& message, const std::string& type_url_prefix); | ||
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// 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 actual | ||
// full name) or parsing the payload has failed. | ||
template <typename T> | ||
bool UnpackTo(T* message) const { | ||
return InternalUnpackTo(T::FullMessageName(), message); | ||
} | ||
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bool UnpackTo(Message* message) const; | ||
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// Checks whether the type specified in the type URL matches the given type. | ||
// A type is considered 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::FullMessageName()); | ||
} | ||
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private: | ||
void InternalPackFrom(const MessageLite& message, | ||
StringPiece type_url_prefix, | ||
StringPiece type_name); | ||
bool InternalUnpackTo(StringPiece type_name, | ||
MessageLite* message) const; | ||
bool InternalIs(StringPiece type_name) const; | ||
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UrlType* type_url_; | ||
ValueType* value_; | ||
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GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(AnyMetadata); | ||
}; | ||
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// 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 the type_url does not have a "/" | ||
// in the type url separating the full type name. | ||
// | ||
// NOTE: this function is available publicly as: | ||
// google::protobuf::Any() // static method on the generated message type. | ||
bool ParseAnyTypeUrl(const std::string& type_url, std::string* full_type_name); | ||
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// Get the proto type name and prefix from Any::type_url value. For example, | ||
// passing "type.googleapis.com/rpc.QueryOrigin" will return | ||
// "type.googleapis.com/" in *url_prefix and "rpc.QueryOrigin" in | ||
// *full_type_name. Returns false if the type_url does not have a "/" in the | ||
// type url separating the full type name. | ||
bool ParseAnyTypeUrl(const std::string& type_url, std::string* url_prefix, | ||
std::string* full_type_name); | ||
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// 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); | ||
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} // namespace internal | ||
} // namespace protobuf | ||
} // namespace google | ||
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#include <google/protobuf/port_undef.inc> | ||
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#endif // GOOGLE_PROTOBUF_ANY_H__ |
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