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#ifndef LIB2GEOM_EXCEPTION_HEADER
#define LIB2GEOM_EXCEPTION_HEADER
/** Defines the different types of exceptions that 2geom can throw.
*
* Copyright 2007 Johan Engelen <goejendaagh@zonnet.nl>
*
* This library is free software; you can redistribute it and/or
* modify it either under the terms of the GNU Lesser General Public
* License version 2.1 as published by the Free Software Foundation
* (the "LGPL") or, at your option, under the terms of the Mozilla
* Public License Version 1.1 (the "MPL"). If you do not alter this
* notice, a recipient may use your version of this file under either
* the MPL or the LGPL.
*
* You should have received a copy of the LGPL along with this library
* in the file COPYING-LGPL-2.1; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
* You should have received a copy of the MPL along with this library
* in the file COPYING-MPL-1.1
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
* OF ANY KIND, either express or implied. See the LGPL or the MPL for
* the specific language governing rights and limitations.
*
*/
#include <exception>
#include <sstream>
#include <string>
namespace Geom {
// Base exception class, all 2geom exceptions should be derrived from this one.
class Exception : public std::exception {
public:
Exception(const char * message, const char *file, const int line) {
std::ostringstream os;
os << "lib2geom exception: " << message << " (" << file << ":" << line << ")";
msgstr = os.str();
}
virtual ~Exception() throw() {} // necessary to destroy the string object!!!
virtual const char* what() const throw () {
return msgstr.c_str();
}
protected:
std::string msgstr;
};
#define throwException(message) throw(Geom::Exception(message, __FILE__, __LINE__))
//-----------------------------------------------------------------------
// Two main exception classes: LogicalError and RangeError.
// Logical errors are 2geom faults/bugs, RangeErrors are 'user' faults.
// This way, the 'user' can distinguish between groups of exceptions
// ('user' is the coder that uses lib2geom)
class LogicalError : public Exception {
public:
LogicalError(const char * message, const char *file, const int line)
: Exception(message, file, line) {}
};
#define throwLogicalError(message) throw(LogicalError(message, __FILE__, __LINE__))
class RangeError : public Exception {
public:
RangeError(const char * message, const char *file, const int line)
: Exception(message, file, line) {}
};
#define throwRangeError(message) throw(RangeError(message, __FILE__, __LINE__))
//-----------------------------------------------------------------------
// Special case exceptions. Best used with the defines :)
class NotImplemented : public LogicalError {
public:
NotImplemented(const char *file, const int line)
: LogicalError("Method not implemented", file, line) {}
};
#define throwNotImplemented(i) throw(NotImplemented(__FILE__, __LINE__))
class InvariantsViolation : public LogicalError {
public:
InvariantsViolation(const char *file, const int line)
: LogicalError("Invariants violation", file, line) {}
};
#define throwInvariantsViolation(i) throw(InvariantsViolation(__FILE__, __LINE__))
#define assert_invariants(e) ((e) ? (void)0 : throwInvariantsViolation(0))
class NotInvertible : public RangeError {
public:
NotInvertible(const char *file, const int line)
: RangeError("Function does not have a unique inverse", file, line) {}
};
#define throwNotInvertible(i) throw(NotInvertible(__FILE__, __LINE__))
class ContinuityError : public RangeError {
public:
ContinuityError(const char *file, const int line)
: RangeError("Non-contiguous path", file, line) {}
};
#define throwContinuityError(i) throw(ContinuityError(__FILE__, __LINE__))
struct SVGPathParseError : public std::exception {
char const *what() const throw() { return "parse error"; }
};
} // namespace Geom
#endif
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