icinga2/lib/base/function.hpp

78 lines
2.8 KiB
C++

/******************************************************************************
* Icinga 2 *
* Copyright (C) 2012-2015 Icinga Development Team (http://www.icinga.org) *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License *
* as published by the Free Software Foundation; either version 2 *
* of the License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the Free Software Foundation *
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
******************************************************************************/
#ifndef SCRIPTFUNCTION_H
#define SCRIPTFUNCTION_H
#include "base/i2-base.hpp"
#include "base/value.hpp"
#include "base/functionwrapper.hpp"
#include "base/scriptglobal.hpp"
#include <vector>
#include <boost/function.hpp>
namespace icinga
{
/**
* A script function that can be used to execute a script task.
*
* @ingroup base
*/
class I2_BASE_API Function : public Object
{
public:
DECLARE_OBJECT(Function);
typedef boost::function<Value (const std::vector<Value>& arguments)> Callback;
Function(const Callback& function, bool side_effect_free = false);
Value Invoke(const std::vector<Value>& arguments = std::vector<Value>());
bool IsSideEffectFree(void) const;
static Object::Ptr GetPrototype(void);
private:
Callback m_Callback;
bool m_SideEffectFree;
};
#define REGISTER_SCRIPTFUNCTION(name, callback) \
namespace { namespace UNIQUE_NAME(sf) { namespace sf ## name { \
void RegisterFunction(void) { \
Function::Ptr sf = new icinga::Function(WrapFunction(callback)); \
ScriptGlobal::Set(#name, sf); \
} \
INITIALIZE_ONCE(RegisterFunction); \
} } }
#define REGISTER_SAFE_SCRIPTFUNCTION(name, callback) \
namespace { namespace UNIQUE_NAME(sf) { namespace sf ## name { \
void RegisterFunction(void) { \
Function::Ptr sf = new icinga::Function(WrapFunction(callback), true); \
ScriptGlobal::Set(#name, sf); \
} \
INITIALIZE_ONCE(RegisterFunction); \
} } }
}
#endif /* SCRIPTFUNCTION_H */