// OpenSTA, Static Timing Analyzer
// Copyright (c) 2026, Parallax Software, Inc.
// 
// This program 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 3 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, see <https://www.gnu.org/licenses/>.
// 
// The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software.
// 
// Altered source versions must be plainly marked as such, and must not be
// misrepresented as being the original software.
// 
// This notice may not be removed or altered from any source distribution.

#pragma once

#include "MinMax.hh"
#include "MinMaxValues.hh"
#include "NetworkClass.hh"
#include "RiseFallMinMax.hh"
#include "Transition.hh"

namespace sta {

using FanoutValues = MinMaxIntValues;

// Port external pin and wire capacitance (set_load -pin_load -wire_load).
class PortExtCap
{
public:
  const Port *port() { return port_; }
  void pinCap(const RiseFall *rf,
              const MinMax *min_max,
              // Return values.
              float &cap,
              bool &exists) const;
  const RiseFallMinMax *pinCap() const { return &pin_cap_; }
  void setPinCap(const Port *port,
                 float cap,
                 const RiseFall *rf,
                 const MinMax *min_max);
  void wireCap(const RiseFall *rf,
               const MinMax *min_max,
               // Return values.
               float &cap,
               bool &exists) const;
  const RiseFallMinMax *wireCap() const { return &wire_cap_; }
  void setWireCap(const Port *port,
                  float cap,
                  const RiseFall *rf,
                  const MinMax *min_max);
  void setFanout(const Port *port,
                 int fanout,
                 const MinMax *min_max);
  void fanout(const MinMax *min_max,
              // Return values.
              int &fanout,
              bool &exists) const;
  const FanoutValues *fanout() const { return &fanout_; }

private:
  const Port *port_{nullptr};
  RiseFallMinMax pin_cap_;
  RiseFallMinMax wire_cap_;
  FanoutValues fanout_;
};

} // namespace sta
