001    // This file is part of the program FRYSK.
002    //
003    // Copyright 2007, Red Hat Inc.
004    //
005    // FRYSK is free software; you can redistribute it and/or modify it
006    // under the terms of the GNU General Public License as published by
007    // the Free Software Foundation; version 2 of the License.
008    //
009    // FRYSK is distributed in the hope that it will be useful, but
010    // WITHOUT ANY WARRANTY; without even the implied warranty of
011    // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012    // General Public License for more details.
013    // 
014    // You should have received a copy of the GNU General Public License
015    // along with FRYSK; if not, write to the Free Software Foundation,
016    // Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
017    // 
018    // In addition, as a special exception, Red Hat, Inc. gives You the
019    // additional right to link the code of FRYSK with code not covered
020    // under the GNU General Public License ("Non-GPL Code") and to
021    // distribute linked combinations including the two, subject to the
022    // limitations in this paragraph. Non-GPL Code permitted under this
023    // exception must only link to the code of FRYSK through those well
024    // defined interfaces identified in the file named EXCEPTION found in
025    // the source code files (the "Approved Interfaces"). The files of
026    // Non-GPL Code may instantiate templates or use macros or inline
027    // functions from the Approved Interfaces without causing the
028    // resulting work to be covered by the GNU General Public
029    // License. Only Red Hat, Inc. may make changes or additions to the
030    // list of Approved Interfaces. You must obey the GNU General Public
031    // License in all respects for all of the FRYSK code and other code
032    // used in conjunction with FRYSK except the Non-GPL Code covered by
033    // this exception. If you modify this file, you may extend this
034    // exception to your version of the file, but you are not obligated to
035    // do so. If you do not wish to provide this exception without
036    // modification, you must delete this exception statement from your
037    // version and license this file solely under the GPL without
038    // exception.
039    
040    package frysk.scopes;
041    
042    import lib.dwfl.DwAt;
043    import lib.dwfl.DwarfDie;
044    import frysk.value.ArithmeticType;
045    import frysk.value.StandardTypes;
046    import frysk.value.Type;
047    import frysk.value.Value;
048    import frysk.debuginfo.DebugInfoFrame;
049    import frysk.isa.ISA;
050    
051    public class Enumerator extends Variable{
052    
053        Value value;
054        private Type type;
055        
056        public Enumerator(DwarfDie variableDie) {
057            super(variableDie);
058        }
059        
060        public Type getType(ISA isa) {
061            if(this.type == null){
062                // FIXME: An enumerator is a type field, not a variable;
063                // and its type is not long.  Should be refering to
064                // frysk.value.EnumType (constructed using TypeEntry for
065                // this enum information and its actual size.
066                this.type = StandardTypes.getLongType(isa.order());
067            }
068            return type;
069        }
070        
071        public Value getValue(DebugInfoFrame frame) {
072            if(this.value == null){
073                // FIXME: An enumerator is a type field, not a variable;
074                // and its type is not long.  Should be refering to
075                // frysk.value.EnumType (constructed using TypeEntry for
076                // this enum information and its actual size.
077                this.value = ((ArithmeticType)getType(frame.getTask().getISA())).createValue(getVariableDie().getAttrConstant(DwAt.CONST_VALUE));
078            }
079            return value;
080        }
081        
082    }