vala/valaenumvalue.vala

   1 /* valaenumvalue.vala
   2  *
   3  * Copyright (C) 2006-2010  Jürg Billeter
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
  18  *
  19  * Author:
  20  *      Jürg Billeter <j@bitron.ch>
  21  */
  22
  23 using GLib;
  24
  25 /**
  26  * Represents an enum member in the source code.
  27  */
  28 public class Vala.EnumValue : Constant {
  29         /**
  30          * The nick of this enum-value
  31          */
  32         public string nick {
  33                 get {
  34                         if (_nick == null) {
  35                                 _nick = get_attribute_string ("Description", "nick");
  36                                 if (_nick == null) {
  37                                         _nick = name.down ().replace ("_", "-");
  38                                 }
  39                         }
  40                         return _nick;
  41                 }
  42         }
  43
  44         private string? _nick = null;
  45
  46         /**
  47          * Creates a new enum value with the specified numerical representation.
  48          *
  49          * @param name  enum value name
  50          * @param value numerical representation
  51          * @return      newly created enum value
  52          */
  53         public EnumValue (string name, Expression? value, SourceReference? source_reference = null, Comment? comment = null) {
  54                 base (name, null, value, source_reference, comment);
  55         }
  56
  57         public override void accept (CodeVisitor visitor) {
  58                 visitor.visit_enum_value (this);
  59         }
  60
  61         public override void accept_children (CodeVisitor visitor) {
  62                 if (value != null) {
  63                         value.accept (visitor);
  64                 }
  65         }
  66
  67         public override bool check (CodeContext context) {
  68                 if (checked) {
  69                         return !error;
  70                 }
  71
  72                 checked = true;
  73
  74                 if (value != null) {
  75                         value.check (context);
  76                 }
  77
  78                 return !error;
  79         }
  80 }