webrtc/base/latebindingsymboltable.cc.def

/*
 *  Copyright 2012 The WebRTC Project Authors. All rights reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

// This file is a supermacro
// (see http://wanderinghorse.net/computing/papers/supermacros_cpp.html) to
// expand a definition of a late-binding symbol table class.
//
// Arguments:
// LATE_BINDING_SYMBOL_TABLE_CLASS_NAME: Name of the class to generate.
// LATE_BINDING_SYMBOL_TABLE_SYMBOLS_LIST: List of symbols to load from the DLL,
//     as an X-Macro list (see http://www.drdobbs.com/blogs/cpp/228700289).
// LATE_BINDING_SYMBOL_TABLE_DLL_NAME: String literal for the DLL file name to
//     load.
//
// From a .cc file, include the header file containing your call to the .h.def
// supermacro, and then call this supermacro (optionally from inside the
// namespace for the class to generate, if any). Example:
//
// #include "myclassname.h"
//
// namespace foo {
//
// #define LATE_BINDING_SYMBOL_TABLE_CLASS_NAME MY_CLASS_NAME
// #define LATE_BINDING_SYMBOL_TABLE_SYMBOLS_LIST MY_SYMBOLS_LIST
// #define LATE_BINDING_SYMBOL_TABLE_DLL_NAME "libdll.so.n"
// #include "webrtc/base/latebindingsymboltable.cc.def"
//
// }

#ifndef LATE_BINDING_SYMBOL_TABLE_CLASS_NAME
#error You must define LATE_BINDING_SYMBOL_TABLE_CLASS_NAME
#endif

#ifndef LATE_BINDING_SYMBOL_TABLE_SYMBOLS_LIST
#error You must define LATE_BINDING_SYMBOL_TABLE_SYMBOLS_LIST
#endif

#ifndef LATE_BINDING_SYMBOL_TABLE_DLL_NAME
#error You must define LATE_BINDING_SYMBOL_TABLE_DLL_NAME
#endif

#define X(sym) #sym,
const char* const LATE_BINDING_SYMBOL_TABLE_CLASS_NAME::kSymbolNames[] = {
  LATE_BINDING_SYMBOL_TABLE_SYMBOLS_LIST
};
#undef X

const ::rtc::LateBindingSymbolTable::TableInfo
    LATE_BINDING_SYMBOL_TABLE_CLASS_NAME::kTableInfo = {
  LATE_BINDING_SYMBOL_TABLE_DLL_NAME,
  SYMBOL_TABLE_SIZE,
  LATE_BINDING_SYMBOL_TABLE_CLASS_NAME::kSymbolNames
};

LATE_BINDING_SYMBOL_TABLE_CLASS_NAME::LATE_BINDING_SYMBOL_TABLE_CLASS_NAME()
    : ::rtc::LateBindingSymbolTable(&kTableInfo, table_) {}

LATE_BINDING_SYMBOL_TABLE_CLASS_NAME::~LATE_BINDING_SYMBOL_TABLE_CLASS_NAME() {}

#undef LATE_BINDING_SYMBOL_TABLE_CLASS_NAME
#undef LATE_BINDING_SYMBOL_TABLE_SYMBOLS_LIST
#undef LATE_BINDING_SYMBOL_TABLE_DLL_NAME