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: kenton@google.com (Kenton Varda) 32// Based on original Protocol Buffers design by 33// Sanjay Ghemawat, Jeff Dean, and others. 34// 35// This file contains miscellaneous helper code used by generated code -- 36// including lite types -- but which should not be used directly by users. 37 38#ifndef GOOGLE_PROTOBUF_GENERATED_MESSAGE_UTIL_H__ 39#define GOOGLE_PROTOBUF_GENERATED_MESSAGE_UTIL_H__ 40 41#include <string> 42 43#include <google/protobuf/stubs/common.h> 44#include <google/protobuf/stubs/once.h> 45namespace google { 46namespace protobuf { 47namespace internal { 48 49// Annotation for the compiler to emit a deprecation message if a field marked 50// with option 'deprecated=true' is used in the code, or for other things in 51// generated code which are deprecated. 52// 53// For internal use in the pb.cc files, deprecation warnings are suppressed 54// there. 55#undef DEPRECATED_PROTOBUF_FIELD 56#define PROTOBUF_DEPRECATED 57 58 59// Constants for special floating point values. 60LIBPROTOBUF_EXPORT double Infinity(); 61LIBPROTOBUF_EXPORT double NaN(); 62 63// Default empty string object. Don't use the pointer directly. Instead, call 64// GetEmptyString() to get the reference. 65LIBPROTOBUF_EXPORT extern const ::std::string* empty_string_; 66LIBPROTOBUF_EXPORT extern ProtobufOnceType empty_string_once_init_; 67 68LIBPROTOBUF_EXPORT void InitEmptyString(); 69 70LIBPROTOBUF_EXPORT inline const ::std::string& GetEmptyString() { 71 GoogleOnceInit(&empty_string_once_init_, &InitEmptyString); 72 return *empty_string_; 73} 74 75// Defined in generated_message_reflection.cc -- not actually part of the lite 76// library. 77// 78// TODO(jasonh): The various callers get this declaration from a variety of 79// places: probably in most cases repeated_field.h. Clean these up so they all 80// get the declaration from this file. 81LIBPROTOBUF_EXPORT int StringSpaceUsedExcludingSelf(const string& str); 82 83} // namespace internal 84} // namespace protobuf 85 86} // namespace google 87#endif // GOOGLE_PROTOBUF_GENERATED_MESSAGE_UTIL_H__ 88