Skip to content
This repository
tag: s20030613
Fetching contributors…

Octocat-spinner-32-eaf2f5

Cannot retrieve contributors at this time

file 205 lines (174 sloc) 4.336 kb
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204
/*
* Copyright (c) 2000-2002 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
*/
#ifdef HAVE_CVS_IDENT
#ident "$Id: net_proc.cc,v 1.6 2002/08/12 01:34:59 steve Exp $"
#endif

# include "config.h"

# include "netlist.h"
# include <assert.h>

NetBlock::NetBlock(Type t, NetScope*ss)
: type_(t), subscope_(ss), last_(0)
{
}

NetBlock::~NetBlock()
{
      while (last_ != 0) {
if (last_->next_ == last_) {
delete last_;
last_ = 0;
} else {
NetProc*cur = last_->next_;
last_->next_ = cur->next_;
cur->next_ = cur;
delete cur;
}
      }
}

void NetBlock::append(NetProc*cur)
{
      if (last_ == 0) {
last_ = cur;
cur->next_ = cur;
      } else {
cur->next_ = last_->next_;
last_->next_ = cur;
last_ = cur;
      }
}

const NetProc* NetBlock::proc_first() const
{
      if (last_ == 0)
return 0;

      return last_->next_;
}

const NetProc* NetBlock::proc_next(const NetProc*cur) const
{
      if (cur == last_)
return 0;

      return cur->next_;
}

NetCase::NetCase(NetCase::TYPE c, NetExpr*ex, unsigned cnt)
: type_(c), expr_(ex), nitems_(cnt)
{
      assert(expr_);
      items_ = new Item[nitems_];
      for (unsigned idx = 0 ; idx < nitems_ ; idx += 1) {
items_[idx].statement = 0;
      }
}

NetCase::~NetCase()
{
      delete expr_;
      for (unsigned idx = 0 ; idx < nitems_ ; idx += 1) {
delete items_[idx].guard;
if (items_[idx].statement) delete items_[idx].statement;
      }
      delete[]items_;
}

NetCase::TYPE NetCase::type() const
{
      return type_;
}

void NetCase::set_case(unsigned idx, NetExpr*e, NetProc*p)
{
      assert(idx < nitems_);
      items_[idx].guard = e;
      items_[idx].statement = p;
      if (items_[idx].guard)
items_[idx].guard->set_width(expr_->expr_width());
}

NetDisable::NetDisable(NetScope*tgt)
: target_(tgt)
{
}

NetDisable::~NetDisable()
{
}

const NetScope* NetDisable::target() const
{
      return target_;
}

NetForever::NetForever(NetProc*p)
: statement_(p)
{
}

NetForever::~NetForever()
{
      delete statement_;
}

NetPDelay::NetPDelay(unsigned long d, NetProc*st)
: delay_(d), expr_(0), statement_(st)
{
}

NetPDelay::NetPDelay(NetExpr*d, NetProc*st)
: delay_(0), expr_(d), statement_(st)
{
}

NetPDelay::~NetPDelay()
{
      if (expr_) delete expr_;
}

unsigned long NetPDelay::delay() const
{
      assert(expr_ == 0);
      return delay_;
}

const NetExpr* NetPDelay::expr() const
{
      return expr_;
}

NetRepeat::NetRepeat(NetExpr*e, NetProc*p)
: expr_(e), statement_(p)
{
}

NetRepeat::~NetRepeat()
{
      delete expr_;
      delete statement_;
}

const NetExpr* NetRepeat::expr() const
{
      return expr_;
}



/*
* $Log: net_proc.cc,v $
* Revision 1.6 2002/08/12 01:34:59 steve
* conditional ident string using autoconfig.
*
* Revision 1.5 2002/07/28 23:58:45 steve
* Fix NetBlock destructor to delete substatements.
*
* Revision 1.4 2002/04/21 04:59:08 steve
* Add support for conbinational events by finding
* the inputs to expressions and some statements.
* Get case and assignment statements working.
*
* Revision 1.3 2001/07/25 03:10:49 steve
* Create a config.h.in file to hold all the config
* junk, and support gcc 3.0. (Stephan Boettcher)
*
* Revision 1.2 2000/07/27 05:13:44 steve
* Support elaboration of disable statements.
*
* Revision 1.1 2000/07/07 04:53:54 steve
* Add support for non-constant delays in delay statements,
* Support evaluating ! in constant expressions, and
* move some code from netlist.cc to net_proc.cc.
*
*/

Something went wrong with that request. Please try again.