number_expr.h

由matlab开发的hybrid系统的描述语言

/*
	HYSDEL
	Copyright (C) 1999-2002  Fabio D. Torrisi

	This file is part of HYSDEL.
    
	HYSDEL 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.

	HYSDEL 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 library; if not, write to the Free Software
	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

	CONTACT INFORMATION
	===================
	Fabio D. Torrisi
	ETH Zentrum
	Physikstrasse. 3 ETL,
	CH-8032 Zurich
	Switzerland
	mailto:[e-mail] (preferred)
*/

#ifndef D_NUMBER_EXPR
#define D_NUMBER_EXPR
#ifndef STD_NS
#define STD_NS
using namespace std;

#endif
#include "Terminal_expr.h"
#include "Number.h"

class Number_expr : public Terminal_expr {
public:
	Number_expr(Number * n, const Globals * glob);
	Number_expr(double dbl, const Globals * glob);
	Number_expr(bool bol, const Globals * glob);

	virtual ~Number_expr() { delete value; }

	string to_matlab() const;

	bool is_const() const { return true; }

	bool is_logic() const;

	bool is_real() const;

	bool semantic_check() const { return true; }

	/** converts a Number into CNF_clause */
	CNF_clause * compute_CNF() const;

	Affine_func * compute_affine() const;

	bool is_affine() const;

	bool is_symbolic() const { return false; }

	bool is_number() const { return true; }

	Number * compute_number() const;

	void semantic_checks();

private:

	/** this actually makes a deep copy, i.e. the Number is cloned as well */
	Expr * shallow_copy() const;

	Number * value;
};
#endif //D_NUMBER_EXPR