110 lines
3.1 KiB
C++
110 lines
3.1 KiB
C++
/*
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* Copyright (c) 2002-2004 Stephen Williams (steve@icarus.com)
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*
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* This source code is free software; you can redistribute it
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* and/or modify it in source code form under the terms of the GNU
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* General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CVS_IDENT
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#ident "$Id: eval_attrib.cc,v 1.9 2007/06/04 19:14:06 steve Exp $"
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#endif
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# include "config.h"
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# include "util.h"
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# include "PExpr.h"
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# include "netlist.h"
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# include <iostream>
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# include <assert.h>
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/*
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* The evaluate_attributes function evaluates the attribute
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* expressions from the map, and returns a table in a form suitable
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* for passing to netlist devices.
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*/
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attrib_list_t* evaluate_attributes(const map<perm_string,PExpr*>&att,
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unsigned&natt,
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Design*des, NetScope*scope)
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{
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natt = att.size();
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if (natt == 0)
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return 0;
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attrib_list_t*table = new attrib_list_t [natt];
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unsigned idx = 0;
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typedef map<perm_string,PExpr*>::const_iterator iter_t;
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for (iter_t cur = att.begin() ; cur != att.end() ; cur ++, idx++) {
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table[idx].key = (*cur).first;
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PExpr*exp = (*cur).second;
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/* If the attribute value is given in the source, then
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evaluate it as a constant. If the value is not
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given, then assume the value is 1. */
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verinum*tmp;
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if (exp)
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tmp = exp->eval_const(des, scope);
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else
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tmp = new verinum(1);
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if (tmp == 0)
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cerr << "internal error: no result for " << *exp << endl;
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assert(tmp);
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table[idx].val = *tmp;
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delete tmp;
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}
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assert(idx == natt);
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return table;
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}
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/*
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* $Log: eval_attrib.cc,v $
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* Revision 1.9 2007/06/04 19:14:06 steve
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* Build errors in picky GCC compilers.
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*
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* Revision 1.8 2005/11/27 17:01:57 steve
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* Fix for stubborn compiler.
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*
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* Revision 1.7 2004/02/20 18:53:35 steve
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* Addtrbute keys are perm_strings.
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*
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* Revision 1.6 2003/01/27 05:09:17 steve
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* Spelling fixes.
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*
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* Revision 1.5 2002/08/12 01:34:59 steve
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* conditional ident string using autoconfig.
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*
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* Revision 1.4 2002/08/10 21:59:39 steve
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* The default attribute value is 1.
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*
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* Revision 1.3 2002/06/06 18:57:18 steve
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* Use standard name for iostream.
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*
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* Revision 1.2 2002/06/03 03:55:14 steve
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* compile warnings.
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*
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* Revision 1.1 2002/05/23 03:08:51 steve
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* Add language support for Verilog-2001 attribute
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* syntax. Hook this support into existing $attribute
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* handling, and add number and void value types.
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*
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* Add to the ivl_target API new functions for access
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* of complex attributes attached to gates.
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*
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*/
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