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/*
* Copyright (c) 1999-2000 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#if !defined(WINNT) && !defined(macintosh)
#ident "$Id: PGate.cc,v 1.9 2000/05/06 15:41:56 steve Exp $"
#endif
# include "PGate.h"
# include "PExpr.h"
# include "verinum.h"
# include <assert.h>
PGate::PGate(const string&name,
svector<PExpr*>*pins,
const svector<PExpr*>*del)
: name_(name), pins_(pins)
{
if (del) delay_.set_delays(del);
str0_ = STRONG;
str1_ = STRONG;
}
PGate::PGate(const string&name,
svector<PExpr*>*pins,
PExpr*del)
: name_(name), pins_(pins)
{
if (del) delay_.set_delay(del);
str0_ = STRONG;
str1_ = STRONG;
}
PGate::PGate(const string&name, svector<PExpr*>*pins)
: name_(name), pins_(pins)
{
str0_ = STRONG;
str1_ = STRONG;
}
PGate::~PGate()
{
}
PGate::strength_t PGate::strength0() const
{
return str0_;
}
void PGate::strength0(PGate::strength_t s)
{
str0_ = s;
}
PGate::strength_t PGate::strength1() const
{
return str1_;
}
void PGate::strength1(PGate::strength_t s)
{
str1_ = s;
}
void PGate::elaborate_scope(Design*, NetScope*) const
{
}
/*
* This method is used during elaboration to calculate the
* rise/fall/decay times for the gate. These values were set in pform
* by the constructor, so here I evaluate the expression in the given
* design context and save the calculated delays into the output
* parameters. This method understands how to handle the different
* numbers of expressions.
*/
void PGate::eval_delays(Design*des, const string&path,
unsigned long&rise_time,
unsigned long&fall_time,
unsigned long&decay_time) const
{
delay_.eval_delays(des, path, rise_time, fall_time, decay_time);
}
PGAssign::PGAssign(svector<PExpr*>*pins)
: PGate("", pins)
{
assert(pins->count() == 2);
}
PGAssign::PGAssign(svector<PExpr*>*pins, svector<PExpr*>*dels)
: PGate("", pins, dels)
{
assert(pins->count() == 2);
}
PGAssign::~PGAssign()
{
}
PGBuiltin::PGBuiltin(Type t, const string&name,
svector<PExpr*>*pins,
svector<PExpr*>*del)
: PGate(name, pins, del), type_(t), msb_(0), lsb_(0)
{
}
PGBuiltin::PGBuiltin(Type t, const string&name,
svector<PExpr*>*pins,
PExpr*del)
: PGate(name, pins, del), type_(t), msb_(0), lsb_(0)
{
}
PGBuiltin::~PGBuiltin()
{
}
void PGBuiltin::set_range(PExpr*msb, PExpr*lsb)
{
assert(msb_ == 0);
assert(lsb_ == 0);
msb_ = msb;
lsb_ = lsb;
}
PGModule::PGModule(const string&type, const string&name, svector<PExpr*>*pins)
: PGate(name, pins), type_(type), overrides_(0), pins_(0),
npins_(0), parms_(0), nparms_(0), msb_(0), lsb_(0)
{
}
PGModule::PGModule(const string&type, const string&name,
named<PExpr*>*pins, unsigned npins)
: PGate(name, 0), type_(type), overrides_(0), pins_(pins),
npins_(npins), parms_(0), nparms_(0), msb_(0), lsb_(0)
{
}
void PGModule::set_parameters(svector<PExpr*>*o)
{
assert(overrides_ == 0);
overrides_ = o;
}
void PGModule::set_parameters(named<PExpr*>*pa, unsigned npa)
{
assert(parms_ == 0);
assert(overrides_ == 0);
parms_ = pa;
nparms_ = npa;
}
void PGModule::set_range(PExpr*msb, PExpr*lsb)
{
assert(msb_ == 0);
assert(lsb_ == 0);
msb_ = msb;
lsb_ = lsb;
}
/*
* $Log: PGate.cc,v $
* Revision 1.9 2000/05/06 15:41:56 steve
* Carry assignment strength to pform.
*
* Revision 1.8 2000/03/08 04:36:53 steve
* Redesign the implementation of scopes and parameters.
* I now generate the scopes and notice the parameters
* in a separate pass over the pform. Once the scopes
* are generated, I can process overrides and evalutate
* paremeters before elaboration begins.
*
* Revision 1.7 2000/02/23 02:56:53 steve
* Macintosh compilers do not support ident.
*
* Revision 1.6 2000/02/18 05:15:02 steve
* Catch module instantiation arrays.
*
* Revision 1.5 1999/09/14 01:50:35 steve
* Handle gates without delays.
*
* Revision 1.4 1999/09/04 19:11:46 steve
* Add support for delayed non-blocking assignments.
*
* Revision 1.3 1999/08/01 21:18:55 steve
* elaborate rise/fall/decay for continuous assign.
*
* Revision 1.2 1999/08/01 16:34:50 steve
* Parse and elaborate rise/fall/decay times
* for gates, and handle the rules for partial
* lists of times.
*
* Revision 1.1 1999/02/15 02:06:15 steve
* Elaborate gate ranges.
*
*/
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