ad_item.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_AD_ITEM
#define D_AD_ITEM
#ifndef STD_NS
#define STD_NS
using namespace std;
#endif

#include "Definition_item.h"
class MLD_representation;
class Min_max_eps;
class Expr;
class Bool_var_symbol;

/** lhs_var = affine_expr <= 0 [mme] */
class AD_item : public Definition_item {
public:
	AD_item(const Var_symbol * lhs, Expr * aff, Min_max_eps * mme,
		const Globals * glob);
	~AD_item();

	bool is_AD_item() const {return true;}
	list < const Var_symbol * > get_required_mme() const;

	list < const Var_symbol * > get_required_simu() const;

	string get_ident() const { return string("AD"); }

	MLD_representation * translate_MLD() const;

	/** go through all Items and compute the min, max and eps values
	 * where they have not been explicitly specified */
	void compute_minmaxeps();

	string matlab_simu() const;

	bool minmax_known() const;

	list < Item * > unroll();

	void semantic_checks();

	string arg_range_check_matlab() const;
	//	bool get_min_computed() const {return min_computed;}
	//	bool get_max_computed() const {return max_computed;}
	//	bool get_eps_computed() const {return eps_computed;}

private:

	/** must be affine */
	Expr * affine_expr;

	Min_max_eps * mme;

	/** was mme computed by the compiler? */ 
	bool min_computed, max_computed, eps_computed;

	friend class Row_information;
};
#endif //D_AD_ITEM