70 lines
2.0 KiB
C++
70 lines
2.0 KiB
C++
#ifndef IVL_PDelays_H
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#define IVL_PDelays_H
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/*
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* Copyright (c) 1999-2021 Stephen Williams (steve@icarus.com)
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*
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* This source code is free software; you can redistribute it
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* and/or modify it in source code form under the terms of the GNU
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* General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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# include "svector.h"
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# include <string>
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# include <list>
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# include <iostream>
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class Design;
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class NetScope;
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class NetExpr;
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class PExpr;
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/*
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* Various PForm objects can carry delays. These delays include rise,
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* fall and decay times. This class arranges to carry the triplet.
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*/
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class PDelays {
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public:
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PDelays();
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~PDelays();
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/* Set the delay expressions. If the delete_flag is true, then
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this object takes ownership of the expressions, and will
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delete it in the destructor. */
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void set_delay(PExpr*);
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void set_delays(const std::list<PExpr*>*del, bool delete_flag=true);
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unsigned delay_count() const;
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void eval_delays(Design*des, NetScope*scope,
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NetExpr*&rise_time,
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NetExpr*&fall_time,
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NetExpr*&decay_time,
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bool as_nets_flag =false) const;
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void dump_delays(std::ostream&out) const;
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private:
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PExpr* delay_[3];
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bool delete_flag_;
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private: // not implemented
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PDelays(const PDelays&);
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PDelays& operator= (const PDelays&);
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};
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std::ostream& operator << (std::ostream&o, const PDelays&);
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#endif /* IVL_PDelays_H */
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