1// Protocol Buffers - Google's data interchange format 2// Copyright 2008 Google Inc. All rights reserved. 3// http://code.google.com/p/protobuf/ 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: jasonh@google.com (Jason Hsueh) 32// 33// This header is logically internal, but is made public because it is used 34// from protocol-compiler-generated code, which may reside in other components. 35// It provides reflection support for generated enums, and is included in 36// generated .pb.h files and should have minimal dependencies. The methods are 37// implemented in generated_message_reflection.cc. 38 39#ifndef GOOGLE_PROTOBUF_GENERATED_ENUM_REFLECTION_H__ 40#define GOOGLE_PROTOBUF_GENERATED_ENUM_REFLECTION_H__ 41 42#include <string> 43 44namespace google { 45namespace protobuf { 46 class EnumDescriptor; 47} // namespace protobuf 48 49namespace protobuf { 50 51// Returns the EnumDescriptor for enum type E, which must be a 52// proto-declared enum type. Code generated by the protocol compiler 53// will include specializations of this template for each enum type declared. 54template <typename E> 55const EnumDescriptor* GetEnumDescriptor(); 56 57namespace internal { 58 59// Helper for EnumType_Parse functions: try to parse the string 'name' as an 60// enum name of the given type, returning true and filling in value on success, 61// or returning false and leaving value unchanged on failure. 62LIBPROTOBUF_EXPORT bool ParseNamedEnum(const EnumDescriptor* descriptor, 63 const string& name, 64 int* value); 65 66template<typename EnumType> 67bool ParseNamedEnum(const EnumDescriptor* descriptor, 68 const string& name, 69 EnumType* value) { 70 int tmp; 71 if (!ParseNamedEnum(descriptor, name, &tmp)) return false; 72 *value = static_cast<EnumType>(tmp); 73 return true; 74} 75 76// Just a wrapper around printing the name of a value. The main point of this 77// function is not to be inlined, so that you can do this without including 78// descriptor.h. 79LIBPROTOBUF_EXPORT const string& NameOfEnum(const EnumDescriptor* descriptor, int value); 80 81} // namespace internal 82} // namespace protobuf 83 84} // namespace google 85#endif // GOOGLE_PROTOBUF_GENERATED_ENUM_REFLECTION_H__ 86