vala/valaenumvaluetype.vala

   1 /* valaenumvaluetype.vala
   2  *
   3  * Copyright (C) 2009-2011  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  * An enum value type.
  27  */
  28 public class Vala.EnumValueType : ValueType {
  29         private Method? to_string_method;
  30
  31         public EnumValueType (Enum type_symbol) {
  32                 base (type_symbol);
  33         }
  34
  35         public override DataType copy () {
  36                 var result = new EnumValueType ((Enum) type_symbol);
  37                 result.source_reference = source_reference;
  38                 result.value_owned = value_owned;
  39                 result.nullable = nullable;
  40
  41                 return result;
  42         }
  43
  44         public Method get_to_string_method () {
  45                 if (to_string_method == null) {
  46                         var string_type = new ObjectType ((Class) CodeContext.get ().root.scope.lookup ("string"));
  47                         string_type.value_owned = false;
  48                         to_string_method = new Method ("to_string", string_type);
  49                         to_string_method.access = SymbolAccessibility.PUBLIC;
  50                         to_string_method.external = true;
  51                         to_string_method.owner = type_symbol.scope;
  52                         to_string_method.this_parameter = new Parameter ("this", this);
  53                         to_string_method.scope.add (to_string_method.this_parameter.name, to_string_method.this_parameter);
  54                 }
  55                 return to_string_method;
  56         }
  57
  58         public override Symbol? get_member (string member_name) {
  59                 var result = base.get_member (member_name);
  60                 if (result == null && member_name == "to_string") {
  61                         return get_to_string_method ();
  62                 }
  63                 return result;
  64         }
  65 }