gobject/valainterfaceregisterfunction.vala

   1 /* valainterfaceregisterfunction.vala
   2  *
   3  * Copyright (C) 2006-2007  Jürg Billeter, Raffaele Sandrini
   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  *      Raffaele Sandrini <raffaele@sandrini.ch>
  22  */
  23
  24 using GLib;
  25
  26 /**
  27  * C function to register an interface at runtime.
  28  */
  29 public class Vala.InterfaceRegisterFunction : TypeRegisterFunction {
  30         /**
  31          * Specifies the interface to be registered.
  32          */
  33         public weak Interface interface_reference { get; set; }
  34
  35         public InterfaceRegisterFunction (Interface iface, CodeContext context) {
  36                 interface_reference = iface;
  37                 this.context = context;
  38         }
  39
  40         public override TypeSymbol get_type_declaration () {
  41                 return interface_reference;
  42         }
  43
  44         public override string get_type_struct_name () {
  45                 return interface_reference.get_type_cname ();
  46         }
  47
  48         public override string get_base_init_func_name () {
  49                 return "%s_base_init".printf (interface_reference.get_lower_case_cname (null));
  50         }
  51
  52         public override string get_class_init_func_name () {
  53                 return "NULL";
  54         }
  55
  56         public override string get_instance_struct_size () {
  57                 return "0";
  58         }
  59
  60         public override string get_instance_init_func_name () {
  61                 return "NULL";
  62         }
  63
  64         public override string get_parent_type_name () {
  65                 return "G_TYPE_INTERFACE";
  66         }
  67
  68         public override SymbolAccessibility get_accessibility () {
  69                 return interface_reference.access;
  70         }
  71
  72         public override CCodeFragment get_type_interface_init_statements () {
  73                 var frag = new CCodeFragment ();
  74
  75                 /* register all prerequisites */
  76                 foreach (DataType prereq_ref in interface_reference.get_prerequisites ()) {
  77                         var prereq = prereq_ref.data_type;
  78
  79                         var func = new CCodeFunctionCall (new CCodeIdentifier ("g_type_interface_add_prerequisite"));
  80                         func.add_argument (new CCodeIdentifier ("%s_type_id".printf (interface_reference.get_lower_case_cname (null))));
  81                         func.add_argument (new CCodeIdentifier (prereq.get_type_id()));
  82
  83                         frag.append (new CCodeExpressionStatement (func));
  84                 }
  85
  86                 return frag;
  87         }
  88 }