logic_item.cc

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)
*/

#include "Logic_item.h"
#include "CNF_clause.h"
#include "Symbol_table.h"
#include "MLD_representation.h"
#include "Expr.h"
#include "Equivalence_expr.h"
#include "Variable_expr.h"
#include "Var_symbol.h"
//#include <stdlib.h>
#include <stdio.h>
#include "Globals.h"
#include "Problem.h"
#include "Problem_handler.h"


Logic_item::Logic_item(const Var_symbol * var, Expr * log_expr, const Globals * glob)
	: Definition_item(var, glob) {
		assert(log_expr); //fine
		logic_expr = log_expr;
}

list < const Var_symbol * > Logic_item::get_required_mme() const {
	list < const Var_symbol * > req;

	return req;
}

list < const Var_symbol * > Logic_item::get_required_simu() const {
	list < const Var_symbol * > req;

	req = get_required_mme();
	add_required(req, logic_expr);
	return req;
}

Logic_item::~Logic_item() {
	delete logic_expr;
	this->Definition_item::~Definition_item();
}


MLD_representation * Logic_item::translate_MLD() const {
	MLD_representation * mld;
	CNF_clause * cnf;
	Expr * equiv;
	int subind_cnt = 0;

	mld = new MLD_representation(globals);
	equiv = new Equivalence_expr(
		new Variable_expr(lhs_var, globals), logic_expr->clone());
	cnf = equiv->compute_CNF();
	cnf_to_mld(cnf, mld, & subind_cnt);
	delete cnf;
	return mld;
}


list < Item * > Logic_item::unroll() {
	list < Item * > unr;
	list < Item * >::iterator iter;

	unr = logic_expr->unroll();
	for (iter = unr.begin(); iter != unr.end(); iter++)
		(* iter)->set_unrolled_from(this);
	return unr;
}


void Logic_item::semantic_checks() {
	string msg;
	char buf[20];

	if (lhs_var->get_kind() != AUX_KIND) {
		sprintf(buf, "line %d: ", get_source_line());
		msg = buf;
		msg += string("left hand side variable ") +
			lhs_var->get_name() + string(" is not auxiliary");
		msg += string(" (") + lhs_var->get_name() +
			string(" declared at line ");
		sprintf(buf, "%d)", lhs_var->get_line_of_decl());
		msg += string(buf);
		globals->problem_handler->process(new Problem(ERROR, msg));
	}
	if (lhs_var->get_type() != BOOL_TYPE) {
		sprintf(buf, "line %d: ", get_source_line());
		msg = buf;
		msg += string("left hand side variable ") +
			lhs_var->get_name() + string(" is not Boolean");
		msg += string(" {") + lhs_var->get_name() +
			string(" declared at line ");
		sprintf(buf, "%d)", lhs_var->get_line_of_decl());
		msg += string(buf);
		globals->problem_handler->process(new Problem(ERROR, msg));
	}
	if (is_required_simu(lhs_var)) {
		sprintf(buf, "line %d: ", get_source_line());
		msg = buf;
		msg += string("recursive definition of variable ") +
			lhs_var->get_name();
		globals->problem_handler->process(new Problem(ERROR, msg));
	}

	logic_expr->semantic_checks();
	assert(logic_expr->is_logic()); //fine
}

string Logic_item::matlab_simu() const {
	string res;

	res += string("% ") + get_source() + string("\n");
	res += lhs_var->to_matlab() + string(" = ") +
		logic_expr->to_matlab() + string(";\n");
	res += string("\n");
	return res;
}

string Logic_item::arg_range_check_matlab() const {
	string res;

	res += logic_expr->arg_range_check_matlab();
	return res;
}