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/* This file is part of the FaCT++ DL reasoner
Copyright (C) 2003-2015 Dmitry Tsarkov and The University of Manchester
Copyright (C) 2015-2016 Dmitry Tsarkov
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef LEVELOGGER_H
#define LEVELOGGER_H
#include <iosfwd>
#include "globaldef.h"
class Configuration;
class LeveLogger
{
private: // members
/// the allowed logging level; init it once for the whole session
unsigned int allowedLevel;
public: // interface
/// c'tor
LeveLogger ( void ) : allowedLevel(0) {}
/// d'tor: just empty
~LeveLogger ( void ) {}
/// sets output file and allowedLevel by given values
bool initLogger ( unsigned int l, const char* filename );
/** sets output file and allowedLevel by config file.
* The values will be taken from Config|[LeveLogger]|{allowedLevel,file}
* Default level is 0, but the file name is mandatory.
*/
bool initLogger ( Configuration& Config );
/// @return true if LEVEL will be allowed
bool isWritable ( unsigned int level ) const
{
if ( USE_LOGGING )
return level <= allowedLevel;
else
return false;
}
}; // LeveLogger
/// the only main logger/manager for all usage
extern LeveLogger LLM;
/// file stream to be used by LLM; be sure that every OP with LL is guarded by LLM
extern std::ostream& LL;
// macro for checking if LL is writable and then return
#define CHECK_LL_RETURN(val) \
if (!LLM.isWritable(val)) return
// macro for checking if LL is writable and then return value
#define CHECK_LL_RETURN_VALUE(val,ret) \
if (!LLM.isWritable(val)) return (ret)
#endif // LEVELOGGER_H
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