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/*
Ousía
Copyright (C) 2014, 2015 Benjamin Paaßen, Andreas Stöckel
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 3 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, see <http://www.gnu.org/licenses/>.
*/
/**
* @file Exceptions.hpp
*
* Describes basic exception classes which are used throughout Ousía.
*
* @author Andreas Stöckel (astoecke@techfak.uni-bielefeld.de)
*/
#ifndef _OUSIA_EXCEPTIONS_HPP_
#define _OUSIA_EXCEPTIONS_HPP_
#include "Location.hpp"
namespace ousia {
/**
* Base exception class all other Ousía exceptions should derive from.
*/
class OusiaException : public std::exception {
private:
/**
* Error message which will be printed by the runtime environment if the
* exception is not caught and handled in the code.
*/
const std::string formatedMessage;
public:
/**
* Constructor of the OusiaException class.
*
* @param formatedMessage is a formated message that should be printed by
* the runtime environment if the exception is not caught.
*/
OusiaException(std::string formatedMessage)
: formatedMessage(std::move(formatedMessage))
{
}
/**
* Virtual destructor.
*/
virtual ~OusiaException() {}
/**
* Implementation of the std::exception what function and used to retrieve
* the error message that should be printed by the runtime environment.
*
* @return a reference to the formated message string given in the
* constructor.
*/
const char *what() const noexcept override
{
return formatedMessage.c_str();
}
};
/**
* Exception class which can be directly passed to a Logger instance and thus
* makes it simple to handle non-recoverable errors in the code.
*/
class LoggableException : public OusiaException {
public:
/**
* Reported error message.
*/
const std::string msg;
/**
* Position in the document at which the exception occurred.
*/
const SourceLocation loc;
/**
* Constructor of the LoggableException class.
*
* @param msg contains the error message.
* @param loc is the position at which the error occured.
*/
LoggableException(std::string msg,
SourceLocation loc = SourceLocation{})
: OusiaException(msg),
msg(std::move(msg)),
loc(std::move(loc))
{
}
/**
* Constructor of the LoggableException class.
*
* @param msg contains the error message.
* @param line is the line in the above file the message refers to.
* @param column is the column in the above file the message refers to.
* @param offs is the byte offset.
*/
LoggableException(std::string msg, int line,
int column, size_t offs)
: LoggableException(msg, SourceLocation(line, column, offs))
{
}
/**
* Constructor of LoggableException for arbitrary position objects.
*
* @param msg is the actual log message.
* @param loc is a reference to a variable with location data.
*/
template <class LocationType>
LoggableException(std::string msg, const LocationType &loc)
: LoggableException(std::move(msg), loc.getLocation())
{
}
/**
* Constructor of LoggableException for arbitrary position objects.
*
* @param msg is the actual log message.
* @param loc is a pointe to a variable with location data.
*/
template <class LocationType>
LoggableException(std::string msg, const LocationType *loc)
: LoggableException(std::move(msg), loc->getLocation())
{
}
/**
* Returns the position at which the exception occured in the text.
*
* @return the position descriptor.
*/
const SourceLocation& getLocation() const { return loc; }
};
}
#endif /* _OUSIA_EXCEPTIONS_HPP_ */
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