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: 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 44#include <google/protobuf/stubs/template_util.h> 45#include <google/protobuf/generated_enum_util.h> 46 47namespace google { 48namespace protobuf { 49 class EnumDescriptor; 50} // namespace protobuf 51 52namespace protobuf { 53 54// Returns the EnumDescriptor for enum type E, which must be a 55// proto-declared enum type. Code generated by the protocol compiler 56// will include specializations of this template for each enum type declared. 57template <typename E> 58const EnumDescriptor* GetEnumDescriptor(); 59 60namespace internal { 61 62// Helper for EnumType_Parse functions: try to parse the string 'name' as an 63// enum name of the given type, returning true and filling in value on success, 64// or returning false and leaving value unchanged on failure. 65LIBPROTOBUF_EXPORT bool ParseNamedEnum(const EnumDescriptor* descriptor, 66 const string& name, 67 int* value); 68 69template<typename EnumType> 70bool ParseNamedEnum(const EnumDescriptor* descriptor, 71 const string& name, 72 EnumType* value) { 73 int tmp; 74 if (!ParseNamedEnum(descriptor, name, &tmp)) return false; 75 *value = static_cast<EnumType>(tmp); 76 return true; 77} 78 79// Just a wrapper around printing the name of a value. The main point of this 80// function is not to be inlined, so that you can do this without including 81// descriptor.h. 82LIBPROTOBUF_EXPORT const string& NameOfEnum(const EnumDescriptor* descriptor, int value); 83 84} // namespace internal 85} // namespace protobuf 86 87} // namespace google 88#endif // GOOGLE_PROTOBUF_GENERATED_ENUM_REFLECTION_H__ 89