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/*
* Copyright (C) 2000-2022 The Exult Team
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef EXCEPTIONS_H
#define EXCEPTIONS_H
#include <cerrno>
#include <stdexcept>
#include <string>
#include <utility>
/*
* Base class of all our exceptions, providing a storage for the error message
*/
class exult_exception : public std::exception {
std::string what_;
int errno_;
const char* sourcefile_;
int line_;
public:
explicit exult_exception(
std::string what_arg, const char* sourcefile = nullptr,
int line = 0)
: what_(std::move(what_arg)), errno_(errno),
sourcefile_(sourcefile), line_(line) {}
const char* what() const noexcept override {
return what_.c_str();
}
const char* sourcefile() const {
return sourcefile_;
}
int line() const {
return line_;
}
int get_errno() const {
return errno_;
}
};
/*
* A quit exception can be thrown to quit the program
*/
class quit_exception : public exult_exception {
int result_;
public:
explicit quit_exception(int result = 0)
: exult_exception("Quit"), result_(result) {}
int get_result() const {
return result_;
}
};
// Per analogiam to boost::noncopyable
class nonreplicatable {
protected:
constexpr nonreplicatable() = default;
nonreplicatable(const nonreplicatable&) = delete;
nonreplicatable(nonreplicatable&&) = delete;
nonreplicatable& operator=(const nonreplicatable&) = delete;
nonreplicatable& operator=(nonreplicatable&&) = delete;
~nonreplicatable() = default;
};
/*
* File errors
*/
class file_exception : public exult_exception {
public:
explicit file_exception(
std::string what_arg, const char* sourcefile, int line)
: exult_exception(std::move(what_arg), sourcefile, line) {}
};
class file_open_exception : public file_exception {
static const std::string prefix_;
public:
explicit file_open_exception(
const std::string& file, const char* sourcefile, int line)
: file_exception("Error opening file " + file, sourcefile, line) {}
};
class file_write_exception : public file_exception {
static const std::string prefix_;
public:
explicit file_write_exception(
const std::string& file, const char* sourcefile, int line)
: file_exception(
"Error writing to file " + file, sourcefile, line) {}
};
class file_read_exception : public file_exception {
static const std::string prefix_;
public:
explicit file_read_exception(
const std::string& file, const char* sourcefile, int line)
: file_exception(
"Error reading from file " + file, sourcefile, line) {}
};
class wrong_file_type_exception : public file_exception {
public:
explicit wrong_file_type_exception(
const std::string& file, const std::string& type,
const char* sourcefile, int line)
: file_exception(
"File " + file + " is not of type " + type, sourcefile,
line) {}
};
//
// Macros to automatically set Sourcefile and line arguments
//
#define file_exception(what_arg) file_exception(what_arg, __FILE__, __LINE__)
#define file_open_exception(file) file_open_exception(file, __FILE__, __LINE__)
#define file_write_exception(file) \
file_write_exception(file, __FILE__, __LINE__)
#define file_read_exception(file) file_read_exception(file, __FILE__, __LINE__)
#define wrong_file_type_exception(file, type) \
wrong_file_type_exception(file, type, __FILE__, __LINE__)
/*
* Exception that gets fired when the user aborts something
*/
class UserBreakException {};
class UserSkipException : public UserBreakException {};
#endif
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