/usr/include/class_loader/class_loader_register_macro.h is in libclass-loader-dev 0.3.8-1build2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (c) 2012, Willow Garage, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the Willow Garage, Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef CLASS_LOADER__CLASS_LOADER_REGISTER_MACRO_H_
#define CLASS_LOADER__CLASS_LOADER_REGISTER_MACRO_H_
#include <string>
#include "class_loader/class_loader_core.h"
#include "class_loader/console_bridge_compatibility.h"
#include "console_bridge/console.h"
#define CLASS_LOADER_REGISTER_CLASS_INTERNAL_WITH_MESSAGE(Derived, Base, UniqueID, Message) \
namespace \
{ \
struct ProxyExec ## UniqueID \
{ \
typedef Derived _derived; \
typedef Base _base; \
ProxyExec ## UniqueID() \
{ \
if (std::string(Message) != "") { \
CONSOLE_BRIDGE_logInform("%s", Message);} \
class_loader::class_loader_private::registerPlugin<_derived, _base>(#Derived, #Base); \
} \
}; \
static ProxyExec ## UniqueID g_register_plugin_ ## UniqueID; \
} // namespace
#define CLASS_LOADER_REGISTER_CLASS_INTERNAL_HOP1_WITH_MESSAGE(Derived, Base, UniqueID, Message) \
CLASS_LOADER_REGISTER_CLASS_INTERNAL_WITH_MESSAGE(Derived, Base, UniqueID, Message)
/**
* @macro This macro is same as CLASS_LOADER_REGISTER_CLASS, but will spit out a message when the plugin is registered
* at library load time
*/
#define CLASS_LOADER_REGISTER_CLASS_WITH_MESSAGE(Derived, Base, Message) \
CLASS_LOADER_REGISTER_CLASS_INTERNAL_HOP1_WITH_MESSAGE(Derived, Base, __COUNTER__, Message)
/**
* @macro This is the macro which must be declared within the source (.cpp) file for each class that is to be exported as plugin.
* The macro utilizes a trick where a new struct is generated along with a declaration of static global variable of same type after it. The struct's constructor invokes a registration function with the plugin system. When the plugin system loads a library with registered classes in it, the initialization of static variables forces the invocation of the struct constructors, and all exported classes are automatically registerd.
*/
#define CLASS_LOADER_REGISTER_CLASS(Derived, Base) \
CLASS_LOADER_REGISTER_CLASS_WITH_MESSAGE(Derived, Base, "")
#endif // CLASS_LOADER__CLASS_LOADER_REGISTER_MACRO_H_
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