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bigintegerexception.h
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bigintegerexception.h
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/*
BigInteger - arbitrary-precision integer library
Copyright (C) 2012-2013, 2018 Yaroslav Zotov.
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/>.
*/
#ifndef BIGINTEGER_EXCEPTION_HEADER
#define BIGINTEGER_EXCEPTION_HEADER
#include <exception>
#include <string>
#include <sstream>
#include <iostream>
// Exception class for bignumbers
class BigIntegerException : public std::exception {
public:
// Log error before throwing
void LogError(bool show) {
if (show)
std::cerr << report << std::endl;
}
// Construct an a exception
BigIntegerException(const char* message, const char* file, int line)
: file(file)
, line(line)
, message(message) {
std::ostringstream outputStream;
std::string messageString = message;
if (!messageString.empty()) {
outputStream << messageString;
} else {
outputStream << "Unknown exception";
}
outputStream << " in file '" << file << "' line " << line;
report = outputStream.str();
LogError(show);
}
// The assertion message
virtual const char* what() const throw() {
return report.c_str();
}
// Source file
const char* File() const throw() {
return file;
}
// Source line
int Line() const throw() {
return line;
}
// Description of failure
const char* Message() const throw() {
return message;
}
//Destructor needed for C++03 standard
~BigIntegerException() throw() {};
private:
const char* file;
int line;
const char* message;
std::string report;
#ifdef DEBUG_EXCEPTIONS
static const bool show = true;
#else
static const bool show = false;
#endif
};
#endif