1/* 2 * Copyright 2012 The WebRTC Project Authors. All rights reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11// This file is a supermacro 12// (see http://wanderinghorse.net/computing/papers/supermacros_cpp.html) to 13// expand a definition of a late-binding symbol table class. 14// 15// Arguments: 16// LATE_BINDING_SYMBOL_TABLE_CLASS_NAME: Name of the class to generate. 17// LATE_BINDING_SYMBOL_TABLE_SYMBOLS_LIST: List of symbols to load from the DLL, 18// as an X-Macro list (see http://www.drdobbs.com/blogs/cpp/228700289). 19// LATE_BINDING_SYMBOL_TABLE_DLL_NAME: String literal for the DLL file name to 20// load. 21// 22// From a .cc file, include the header file containing your call to the .h.def 23// supermacro, and then call this supermacro (optionally from inside the 24// namespace for the class to generate, if any). Example: 25// 26// #include "myclassname.h" 27// 28// namespace foo { 29// 30// #define LATE_BINDING_SYMBOL_TABLE_CLASS_NAME MY_CLASS_NAME 31// #define LATE_BINDING_SYMBOL_TABLE_SYMBOLS_LIST MY_SYMBOLS_LIST 32// #define LATE_BINDING_SYMBOL_TABLE_DLL_NAME "libdll.so.n" 33// #include "webrtc/base/latebindingsymboltable.cc.def" 34// 35// } 36 37#ifndef LATE_BINDING_SYMBOL_TABLE_CLASS_NAME 38#error You must define LATE_BINDING_SYMBOL_TABLE_CLASS_NAME 39#endif 40 41#ifndef LATE_BINDING_SYMBOL_TABLE_SYMBOLS_LIST 42#error You must define LATE_BINDING_SYMBOL_TABLE_SYMBOLS_LIST 43#endif 44 45#ifndef LATE_BINDING_SYMBOL_TABLE_DLL_NAME 46#error You must define LATE_BINDING_SYMBOL_TABLE_DLL_NAME 47#endif 48 49#define X(sym) #sym, 50const char* const LATE_BINDING_SYMBOL_TABLE_CLASS_NAME::kSymbolNames[] = { 51 LATE_BINDING_SYMBOL_TABLE_SYMBOLS_LIST 52}; 53#undef X 54 55const ::rtc::LateBindingSymbolTable::TableInfo 56 LATE_BINDING_SYMBOL_TABLE_CLASS_NAME::kTableInfo = { 57 LATE_BINDING_SYMBOL_TABLE_DLL_NAME, 58 SYMBOL_TABLE_SIZE, 59 LATE_BINDING_SYMBOL_TABLE_CLASS_NAME::kSymbolNames 60}; 61 62LATE_BINDING_SYMBOL_TABLE_CLASS_NAME::LATE_BINDING_SYMBOL_TABLE_CLASS_NAME() 63 : ::rtc::LateBindingSymbolTable(&kTableInfo, table_) {} 64 65LATE_BINDING_SYMBOL_TABLE_CLASS_NAME::~LATE_BINDING_SYMBOL_TABLE_CLASS_NAME() {} 66 67#undef LATE_BINDING_SYMBOL_TABLE_CLASS_NAME 68#undef LATE_BINDING_SYMBOL_TABLE_SYMBOLS_LIST 69#undef LATE_BINDING_SYMBOL_TABLE_DLL_NAME 70