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/*
* Copyright (c) 2003 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: symbol_search.cc,v 1.4 2007/01/16 05:44:15 steve Exp $"
#endif

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


/*
* Search for the hierarchical name.
*/
NetScope*symbol_search(const Design*des, NetScope*scope, hname_t path,
NetNet*&net,
const NetExpr*&par,
NetEvent*&eve,
const NetExpr*&ex1, const NetExpr*&ex2)
{
      assert(scope);

/* Get the tail name of the object we are looking for. */
      char*key = path.remove_tail_name();

/* Initialize output argument to cleared. */
      net = 0;
      par = 0;
      eve = 0;

/* If the path has a scope part, then search for the specified
scope that we are supposed to search. */
      if (path.peek_name(0))
scope = des->find_scope(scope, path);

      while (scope) {
if ( (net = scope->find_signal(key)) ) {
delete key;
return scope;
}

if ( (eve = scope->find_event(key)) ) {
delete key;
return scope;
}

if ( (par = scope->get_parameter(key, ex1, ex2)) ) {
delete key;
return scope;
}

if (scope->type() == NetScope::MODULE)
scope = 0;
else
scope = scope->parent();
      }

      delete key;
      return 0;
}

/*
* $Log: symbol_search.cc,v $
* Revision 1.4 2007/01/16 05:44:15 steve
* Major rework of array handling. Memories are replaced with the
* more general concept of arrays. The NetMemory and NetEMemory
* classes are removed from the ivl core program, and the IVL_LPM_RAM
* lpm type is removed from the ivl_target API.
*
* Revision 1.3 2005/11/27 05:56:20 steve
* Handle bit select of parameter with ranges.
*
* Revision 1.2 2005/07/11 16:56:51 steve
* Remove NetVariable and ivl_variable_t structures.
*
* Revision 1.1 2003/09/19 03:30:05 steve
* Fix name search in elab_lval.
*
*/

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