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/*
 *  nextpnr -- Next Generation Place and Route
 *
 *  Copyright (C) 2018  Clifford Wolf <clifford@symbioticeda.com>
 *  Copyright (C) 2018  David Shah <david@symbioticeda.com>
 *
 *  Permission to use, copy, modify, and/or distribute this software for any
 *  purpose with or without fee is hereby granted, provided that the above
 *  copyright notice and this permission notice appear in all copies.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 *  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 *  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 *  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 *  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 *  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 *  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 */

#include "nextpnr.h"

#ifndef DESIGN_UTILS_H
#define DESIGN_UTILS_H

#include <algorithm>

NEXTPNR_NAMESPACE_BEGIN

/*
Utilities for design manipulation, intended for use inside packing algorithms
 */

// Disconnect a net (if connected) from old, and connect it to rep
void replace_port(CellInfo *old_cell, IdString old_name, CellInfo *rep_cell, IdString rep_name);

// If a net drives a given port of a cell matching a predicate (in many
// cases more than one cell type, e.g. SB_DFFxx so a predicate is used), return
// the first instance of that cell (otherwise nullptr). If exclusive is set to
// true, then this cell must be the only load. If ignore_cell is set, that cell
// is not considered