vala/valaerrorcode.vala

   1 /* valaerrorcode.vala
   2  *
   3  * Copyright (C) 2008  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  * Represents an enum member in the source code.
  27  */
  28 public class Vala.ErrorCode : TypeSymbol {
  29         /**
  30          * Specifies the numerical representation of this enum value.
  31          */
  32         public Expression value { get; set; }
  33
  34         /**
  35          * Creates a new enum value.
  36          *
  37          * @param name enum value name
  38          * @return     newly created enum value
  39          */
  40         public ErrorCode (string name, SourceReference? source_reference = null, Comment? comment = null) {
  41                 base (name, source_reference, comment);
  42         }
  43
  44         /**
  45          * Creates a new enum value with the specified numerical representation.
  46          *
  47          * @param name  enum value name
  48          * @param value numerical representation
  49          * @return      newly created enum value
  50          */
  51         public ErrorCode.with_value (string name, Expression value, SourceReference? source_reference = null) {
  52                 this (name, source_reference);
  53                 this.value = value;
  54         }
  55
  56         public override void accept (CodeVisitor visitor) {
  57                 visitor.visit_error_code (this);
  58         }
  59
  60         public override void accept_children (CodeVisitor visitor) {
  61                 if (value != null) {
  62                         value.accept (visitor);
  63                 }
  64         }
  65
  66         public override bool check (CodeContext context) {
  67                 if (checked) {
  68                         return !error;
  69                 }
  70
  71                 checked = true;
  72
  73                 if (value != null) {
  74                         value.check (context);
  75                 }
  76
  77                 return !error;
  78         }
  79 }