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// This file is part of ff3d - http://www.freefem.org/ff3d
// Copyright (C) 2001, 2002, 2003 Stphane Del Pino
// 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, 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.
// $Id: BinaryOperation.hpp,v 1.5 2007/03/30 19:20:44 delpinux Exp $
#ifndef BINARY_OPERATION_HPP
#define BINARY_OPERATION_HPP
#include <ErrorHandler.hpp>
#include <string>
/**
* @file BinaryOperation.hpp
* @author Stephane Del Pino
* @date Wed Jul 19 14:49:51 2006
*
* @brief Discribes binary operations
*/
class BinaryOperation
{
public:
enum Type {
sum,
difference,
division,
modulo,
power,
product,
min,
max,
gt,
lt,
ge,
le,
eq,
ne,
or_,
xor_,
and_,
undefined
};
private:
const Type __type; /**< type of the binary operation */
static BinaryOperation::Type
__getType(const std::string& typeName)
{
if (typeName == "min") return BinaryOperation::min;
if (typeName == "max") return BinaryOperation::max;
return BinaryOperation::undefined;
}
public:
/**
* Writes the binary operation to a stream
*
* @param os given stream
* @param b binary operation
*
* @return os
*/
friend std::ostream& operator<<(std::ostream& os,
const BinaryOperation& b)
{
os << b.name();
return os;
}
/**
* Gets the name of the binary operation
*
* @return operator name
*/
std::string name() const
{
switch(__type) {
case sum: {
return "+";
}
case difference: {
return "-";
}
case product: {
return "*";
}
case division: {
return "/";
}
case modulo: {
return "%";
}
case power: {
return "^";
}
case min: {
return "min";
}
case max: {
return "max";
}
case gt: {
return ">";
}
case lt: {
return "<";
}
case ge: {
return ">=";
}
case le: {
return "<=";
}
case eq: {
return "==";
}
case ne: {
return "!=";
}
case or_: {
return "or";
}
case xor_: {
return "xor";
}
case and_: {
return "and";
}
case undefined: {
return "undefined";
}
default: {
throw ErrorHandler(__FILE__,__LINE__,
"unknown operator type",
ErrorHandler::unexpected);
}
}
return "undefined";
}
/**
* Read-only access to the binary operation type
*
* @return __type
*/
const BinaryOperation::Type&
type() const
{
return __type;
}
/**
* Constructor
*
* @param typeName the name of the binary operation
*/
BinaryOperation(const std::string& typeName)
: __type(BinaryOperation::__getType(typeName))
{
;
}
/**
* Constructor
*
* @param type the type of the binary operation
*/
BinaryOperation(const BinaryOperation::Type& type)
: __type(type)
{
;
}
/**
* Copy constructor
*
* @param b a given binary operation
*/
BinaryOperation(const BinaryOperation& b)
: __type(b.__type)
{
;
}
/**
* Destructor
*
*/
~BinaryOperation()
{
;
}
};
#endif // BINARY_OPERATION_HPP
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