/*
 *	aegis - project change supervisor
 *	Copyright (C) 2002, 2003 Peter Miller;
 *	All rights reserved.
 *
 *	This program is free software; you can redistribute it and/or modify
 *	it 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, USA.
 *
 * MANIFEST: functions to manipulate nextdeltnumbs
 */

#include <change/branch.h>
#include <error.h>
#include <trace.h>


long
change_branch_next_delta_number(change_ty *cp)
{
    cstate_ty       *cstate_data;
    cstate_branch_ty *bp;
    long	    result;
    size_t	    j;

    trace(("change_branch_next_delta_number(cp = %8.8lX)\n{\n"/*}*/, (long)cp));
    cstate_data = change_cstate_get(cp);
    bp = cstate_data->branch;
    assert(bp);
    if (!bp || !bp->history || !bp->history->length)
    {
       	trace(("return 1;\n"));
       	trace((/*{*/"}\n"));
       	return 1;
    }
    result = bp->history->length + 1;
    for (j = 0; j < bp->history->length; ++j)
    {
       	cstate_branch_history_ty *hp;

       	hp = bp->history->list[j];
       	if (hp->delta_number >= result)
	    result = hp->delta_number + 1;
    }
    trace(("return %ld;\n", result));
    trace((/*{*/"}\n"));
    return result;
}
