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#ifndef IVL_PTimingCheck_H
#define IVL_PTimingCheck_H
/*
* Copyright (c) 2006-2025 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 "LineInfo.h"
# include "PExpr.h"
# include "pform_types.h"
# include <memory>
/*
* The PTimingCheck is the base class for all timing checks
*/
class PTimingCheck : public LineInfo {
public:
enum EdgeType {EDGE_01, EDGE_0X, EDGE_10, EDGE_1X, EDGE_X0, EDGE_X1};
struct event_t {
pform_name_t name;
bool posedge;
bool negedge;
std::vector<EdgeType> edges;
std::unique_ptr<PExpr> condition;
};
// This struct is used to parse the optional arguments
struct optional_args_t {
pform_name_t* notifier = nullptr;
PExpr* timestamp_cond = nullptr;
PExpr* timecheck_cond = nullptr;
pform_name_t* delayed_reference = nullptr;
pform_name_t* delayed_data = nullptr;
PExpr* event_based_flag = nullptr;
PExpr* remain_active_flag = nullptr;
};
PTimingCheck() { }
virtual ~PTimingCheck() override { }
virtual void elaborate(class Design*des, class NetScope*scope) const = 0;
virtual void dump(std::ostream&out, unsigned ind) const = 0;
};
/*
* The PRecRem is the parse of a $recrem timing check
*/
class PRecRem : public PTimingCheck {
public:
PRecRem(event_t* reference_event,
event_t* data_event,
PExpr* setup_limit,
PExpr* hold_limit,
pform_name_t* notifier,
PExpr* timestamp_cond,
PExpr* timecheck_cond,
pform_name_t* delayed_reference,
pform_name_t* delayed_data);
~PRecRem() override;
void elaborate(class Design*des, class NetScope*scope) const override;
void dump(std::ostream&out, unsigned ind) const override;
private:
std::unique_ptr<event_t> reference_event_;
std::unique_ptr<event_t> data_event_;
std::unique_ptr<PExpr> setup_limit_;
std::unique_ptr<PExpr> hold_limit_;
std::unique_ptr<pform_name_t> notifier_;
std::unique_ptr<PExpr> timestamp_cond_;
std::unique_ptr<PExpr> timecheck_cond_;
std::unique_ptr<pform_name_t> delayed_reference_;
std::unique_ptr<pform_name_t> delayed_data_;
};
/*
* The PSetupHold is the parse of a $setuphold timing check
*/
class PSetupHold : public PTimingCheck {
public:
PSetupHold(event_t* reference_event,
event_t* data_event,
PExpr* setup_limit,
PExpr* hold_limit,
pform_name_t* notifier,
PExpr* timestamp_cond,
PExpr* timecheck_cond,
pform_name_t* delayed_reference,
pform_name_t* delayed_data);
~PSetupHold() override;
void elaborate(class Design*des, class NetScope*scope) const override;
void dump(std::ostream&out, unsigned ind) const override;
private:
std::unique_ptr<event_t> reference_event_;
std::unique_ptr<event_t> data_event_;
std::unique_ptr<PExpr> setup_limit_;
std::unique_ptr<PExpr> hold_limit_;
std::unique_ptr<pform_name_t> notifier_;
std::unique_ptr<PExpr> timestamp_cond_;
std::unique_ptr<PExpr> timecheck_cond_;
std::unique_ptr<pform_name_t> delayed_reference_;
std::unique_ptr<pform_name_t> delayed_data_;
};
#endif /* IVL_PTimingCheck_H */
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