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#ifndef IVL_PDelays_H
#define IVL_PDelays_H
/*
* Copyright (c) 1999-2014 Stephen Williams (steve@icarus.com)
*
* This source code is free software; you can redistribute it
* and/or modify it in source code form 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
# include "svector.h"
# include <string>
# include <list>
# include <iostream>
#ifdef __GNUC__
#if __GNUC__ > 2
using namespace std;
#endif
#endif
class Design;
class NetScope;
class NetExpr;
class PExpr;
/*
* Various PForm objects can carry delays. These delays include rise,
* fall and decay times. This class arranges to carry the triplet.
*/
class PDelays {
public:
PDelays();
~PDelays();
/* Set the delay expressions. If the delete_flag is true, then
this object takes ownership of the expressions, and will
delete it in the destructor. */
void set_delay(PExpr*);
void set_delays(const list<PExpr*>*del, bool delete_flag=true);
unsigned delay_count() const;
void eval_delays(Design*des, NetScope*scope,
NetExpr*&rise_time,
NetExpr*&fall_time,
NetExpr*&decay_time,
bool as_nets_flag =false) const;
void dump_delays(ostream&out) const;
private:
PExpr* delay_[3];
bool delete_flag_;
private: // not implemented
PDelays(const PDelays&);
PDelays& operator= (const PDelays&);
};
ostream& operator << (ostream&o, const PDelays&);
#endif /* IVL_PDelays_H */
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