vala/valadelegatetype.vala

   1 /* valadelegatetype.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  * The type of an instance of a delegate.
  27  */
  28 public class Vala.DelegateType : DataType {
  29         public Delegate delegate_symbol { get; set; }
  30
  31         public DelegateType (Delegate delegate_symbol) {
  32                 this.delegate_symbol = delegate_symbol;
  33         }
  34
  35         public override bool is_invokable () {
  36                 return true;
  37         }
  38
  39         public override DataType? get_return_type () {
  40                 return delegate_symbol.return_type;
  41         }
  42
  43         public override List<FormalParameter>? get_parameters () {
  44                 return delegate_symbol.get_parameters ();
  45         }
  46
  47         public override string to_qualified_string (Scope? scope) {
  48                 string s = delegate_symbol.get_full_name ();
  49                 if (nullable) {
  50                         s += "?";
  51                 }
  52                 return s;
  53         }
  54
  55         public override DataType copy () {
  56                 var result = new DelegateType (delegate_symbol);
  57                 result.source_reference = source_reference;
  58                 result.value_owned = value_owned;
  59                 result.nullable = nullable;
  60
  61                 foreach (DataType arg in get_type_arguments ()) {
  62                         result.add_type_argument (arg.copy ());
  63                 }
  64
  65                 return result;
  66         }
  67
  68         public override string? get_cname () {
  69                 return delegate_symbol.get_cname ();
  70         }
  71
  72         public override List<Symbol> get_symbols () {
  73                 var symbols = new ArrayList<Symbol> ();
  74                 symbols.add (delegate_symbol);
  75                 return symbols;
  76         }
  77
  78         public override string? get_type_id () {
  79                 return "G_TYPE_POINTER";
  80         }
  81
  82         public override bool check (SemanticAnalyzer analyzer) {
  83                 return delegate_symbol.check (analyzer);
  84         }
  85
  86         public override bool is_disposable () {
  87                 return delegate_symbol.has_target && value_owned;
  88         }
  89 }