1 /* 2 * libjingle 3 * Copyright 2012, Google Inc. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 // This file is a supermacro 29 // (see http://wanderinghorse.net/computing/papers/supermacros_cpp.html) to 30 // expand a definition of a late-binding symbol table class. 31 // 32 // Arguments: 33 // LATE_BINDING_SYMBOL_TABLE_CLASS_NAME: Name of the class to generate. 34 // LATE_BINDING_SYMBOL_TABLE_SYMBOLS_LIST: List of symbols to load from the DLL, 35 // as an X-Macro list (see http://www.drdobbs.com/blogs/cpp/228700289). 36 // LATE_BINDING_SYMBOL_TABLE_DLL_NAME: String literal for the DLL file name to 37 // load. 38 // 39 // From a .cc file, include the header file containing your call to the .h.def 40 // supermacro, and then call this supermacro (optionally from inside the 41 // namespace for the class to generate, if any). Example: 42 // 43 // #include "myclassname.h" 44 // 45 // namespace foo { 46 // 47 // #define LATE_BINDING_SYMBOL_TABLE_CLASS_NAME MY_CLASS_NAME 48 // #define LATE_BINDING_SYMBOL_TABLE_SYMBOLS_LIST MY_SYMBOLS_LIST 49 // #define LATE_BINDING_SYMBOL_TABLE_DLL_NAME "libdll.so.n" 50 // #include "talk/base/latebindingsymboltable.cc.def" 51 // 52 // } 53 54 #ifndef LATE_BINDING_SYMBOL_TABLE_CLASS_NAME 55 #error You must define LATE_BINDING_SYMBOL_TABLE_CLASS_NAME 56 #endif 57 58 #ifndef LATE_BINDING_SYMBOL_TABLE_SYMBOLS_LIST 59 #error You must define LATE_BINDING_SYMBOL_TABLE_SYMBOLS_LIST 60 #endif 61 62 #ifndef LATE_BINDING_SYMBOL_TABLE_DLL_NAME 63 #error You must define LATE_BINDING_SYMBOL_TABLE_DLL_NAME 64 #endif 65 66 const ::talk_base::LateBindingSymbolTable::TableInfo 67 LATE_BINDING_SYMBOL_TABLE_CLASS_NAME::kTableInfo = { 68 LATE_BINDING_SYMBOL_TABLE_DLL_NAME, 69 SYMBOL_TABLE_SIZE, 70 (const char *const []){ 71 #define X(sym) \ 72 #sym, 73 LATE_BINDING_SYMBOL_TABLE_SYMBOLS_LIST 74 #undef X 75 }, 76 }; 77 78 LATE_BINDING_SYMBOL_TABLE_CLASS_NAME::LATE_BINDING_SYMBOL_TABLE_CLASS_NAME() 79 : ::talk_base::LateBindingSymbolTable(&kTableInfo, table_) {} 80 81 LATE_BINDING_SYMBOL_TABLE_CLASS_NAME::~LATE_BINDING_SYMBOL_TABLE_CLASS_NAME() {} 82 83 #undef LATE_BINDING_SYMBOL_TABLE_CLASS_NAME 84 #undef LATE_BINDING_SYMBOL_TABLE_SYMBOLS_LIST 85 #undef LATE_BINDING_SYMBOL_TABLE_DLL_NAME 86
