vala/valavaluetype.vala

   1 /* valavaluetype.vala
   2  *
   3  * Copyright (C) 2007-2009  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  * A value type, i.e. a struct or an enum type.
  27  */
  28 public abstract class Vala.ValueType : DataType {
  29         /**
  30          * The referred struct or enum.
  31          */
  32         public weak TypeSymbol type_symbol { get; set; }
  33
  34         public ValueType (TypeSymbol type_symbol) {
  35                 this.type_symbol = type_symbol;
  36                 data_type = type_symbol;
  37         }
  38
  39         public override string? get_cname () {
  40                 string ptr = "";
  41                 if (nullable) {
  42                         ptr = "*";
  43                 }
  44                 return type_symbol.get_cname () + ptr;
  45         }
  46
  47         public override bool is_disposable () {
  48                 if (!value_owned) {
  49                         return false;
  50                 }
  51
  52                 // nullable structs are heap allocated
  53                 if (nullable) {
  54                         return true;
  55                 }
  56
  57                 var st = type_symbol as Struct;
  58                 if (st != null) {
  59                         return st.is_disposable ();
  60                 }
  61
  62                 return false;
  63         }
  64
  65         public override bool check (CodeContext context) {
  66                 return type_symbol.check (context);
  67         }
  68 }