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 27 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 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 // Author: kenton@google.com (Kenton Varda) 32 // Based on original Protocol Buffers design by 33 // Sanjay Ghemawat, Jeff Dean, and others. 34 // 35 // This header is logically internal, but is made public because it is used 36 // from protocol-compiler-generated code, which may reside in other components. 37 38 #ifndef GOOGLE_PROTOBUF_REFLECTION_OPS_H__ 39 #define GOOGLE_PROTOBUF_REFLECTION_OPS_H__ 40 41 #include <google/protobuf/stubs/common.h> 42 #include <google/protobuf/message.h> 43 44 namespace google { 45 namespace protobuf { 46 namespace internal { 47 48 // Basic operations that can be performed using reflection. 49 // These can be used as a cheap way to implement the corresponding 50 // methods of the Message interface, though they are likely to be 51 // slower than implementations tailored for the specific message type. 52 // 53 // This class should stay limited to operations needed to implement 54 // the Message interface. 55 // 56 // This class is really a namespace that contains only static methods. 57 class LIBPROTOBUF_EXPORT ReflectionOps { 58 public: 59 static void Copy(const Message& from, Message* to); 60 static void Merge(const Message& from, Message* to); 61 static void Clear(Message* message); 62 static bool IsInitialized(const Message& message); 63 static void DiscardUnknownFields(Message* message); 64 65 // Finds all unset required fields in the message and adds their full 66 // paths (e.g. "foo.bar[5].baz") to *names. "prefix" will be attached to 67 // the front of each name. 68 static void FindInitializationErrors(const Message& message, 69 const string& prefix, 70 vector<string>* errors); 71 72 private: 73 // All methods are static. No need to construct. 74 GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(ReflectionOps); 75 }; 76 77 } // namespace internal 78 } // namespace protobuf 79 80 } // namespace google 81 #endif // GOOGLE_PROTOBUF_REFLECTION_OPS_H__ 82