vala/valanamedargument.vala

   1 /* valanamedargument.vala
   2  *
   3  * Copyright (C) 2009-2010  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 public class Vala.NamedArgument : Expression {
  24         public string name { get; set; }
  25
  26         public Expression inner {
  27                 get {
  28                         return _inner;
  29                 }
  30                 set {
  31                         _inner = value;
  32                         _inner.parent_node = this;
  33                 }
  34         }
  35
  36         private Expression _inner;
  37
  38         public NamedArgument (string name, Expression inner, SourceReference? source_reference = null) {
  39                 this.name = name;
  40                 this.inner = inner;
  41                 this.source_reference = source_reference;
  42         }
  43
  44         public override void accept (CodeVisitor visitor) {
  45                 visitor.visit_named_argument (this);
  46
  47                 visitor.visit_expression (this);
  48         }
  49
  50         public override void accept_children (CodeVisitor visitor) {
  51                 inner.accept (visitor);
  52         }
  53
  54         public override void replace_expression (Expression old_node, Expression new_node) {
  55                 if (inner == old_node) {
  56                         inner = new_node;
  57                 }
  58         }
  59
  60         public override bool is_pure () {
  61                 return inner.is_pure ();
  62         }
  63
  64         public override bool check (CodeContext context) {
  65                 if (checked) {
  66                         return !error;
  67                 }
  68
  69                 checked = true;
  70
  71                 inner.target_type = target_type;
  72
  73                 if (!inner.check (context)) {
  74                         error = true;
  75                         return false;
  76                 }
  77
  78                 inner.target_type = inner.value_type;
  79                 value_type = inner.value_type;
  80
  81                 return !error;
  82         }
  83
  84         public override void emit (CodeGenerator codegen) {
  85                 inner.emit (codegen);
  86
  87                 codegen.visit_named_argument (this);
  88
  89                 codegen.visit_expression (this);
  90         }
  91
  92         public override void get_defined_variables (Collection<Variable> collection) {
  93                 inner.get_defined_variables (collection);
  94         }
  95
  96         public override void get_used_variables (Collection<Variable> collection) {
  97                 inner.get_used_variables (collection);
  98         }
  99 }