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Diffstat (limited to 'src/google/protobuf/any.h')
-rw-r--r-- | src/google/protobuf/any.h | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/src/google/protobuf/any.h b/src/google/protobuf/any.h new file mode 100644 index 00000000..f681eceb --- /dev/null +++ b/src/google/protobuf/any.h @@ -0,0 +1,90 @@ +// 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/arenastring.h> +#include <google/protobuf/descriptor.h> +#include <google/protobuf/message.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); + + void PackFrom(const Message& message); + + bool UnpackTo(Message* message) const; + + 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/". + +// 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". +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__ |