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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. | |
| namespace google { | |
| namespace protobuf { | |
| class FieldDescriptor; | |
| class Message; | |
| namespace internal { | |
| extern const char kAnyFullTypeName[]; // "google.protobuf.Any". | |
| extern const char kTypeGoogleApisComPrefix[]; // "type.googleapis.com/". | |
| extern const char kTypeGoogleProdComPrefix[]; // "type.googleprod.com/". | |
| std::string GetTypeUrl(StringPiece message_name, | |
| StringPiece type_url_prefix); | |
| // 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". | |
| constexpr AnyMetadata(UrlType* type_url, ValueType* value) | |
| : type_url_(type_url), value_(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>". | |
| template <typename T> | |
| void PackFrom(const T& message) { | |
| InternalPackFrom(message, kTypeGoogleApisComPrefix, T::FullMessageName()); | |
| } | |
| 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 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()); | |
| } | |
| void PackFrom(const Message& message, StringPiece 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 actual | |
| // full name) or parsing the payload has failed. | |
| template <typename T> | |
| bool UnpackTo(T* message) const { | |
| return InternalUnpackTo(T::FullMessageName(), message); | |
| } | |
| bool UnpackTo(Message* message) const; | |
| // 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()); | |
| } | |
| 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; | |
| UrlType* type_url_; | |
| ValueType* value_; | |
| GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(AnyMetadata); | |
| }; | |
| // 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(StringPiece type_url, std::string* full_type_name); | |
| // 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(StringPiece type_url, std::string* url_prefix, | |
| std::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 | |