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         private string cname;
  35
  36         /**
  37          * Creates a new enum value.
  38          *
  39          * @param name enum value name
  40          * @return     newly created enum value
  41          */
  42         public ErrorCode (string name, SourceReference? source_reference = null, Comment? comment = null) {
  43                 base (name, source_reference, comment);
  44         }
  45
  46         /**
  47          * Creates a new enum value with the specified numerical representation.
  48          *
  49          * @param name  enum value name
  50          * @param value numerical representation
  51          * @return      newly created enum value
  52          */
  53         public ErrorCode.with_value (string name, Expression value, SourceReference? source_reference = null) {
  54                 this (name, source_reference);
  55                 this.value = value;
  56         }
  57
  58         public override void accept (CodeVisitor visitor) {
  59                 visitor.visit_error_code (this);
  60         }
  61
  62         public override void accept_children (CodeVisitor visitor) {
  63                 if (value != null) {
  64                         value.accept (visitor);
  65                 }
  66         }
  67
  68         public override string get_cname (bool const_type = false) {
  69                 if (cname == null) {
  70                         var edomain = (ErrorDomain) parent_symbol;
  71                         cname = "%s%s".printf (edomain.get_cprefix (), name);
  72                 }
  73                 return cname;
  74         }
  75
  76         public override string? get_lower_case_cname (string? infix) {
  77                 return get_cname ().down ();
  78         }
  79
  80         public override bool check (CodeContext context) {
  81                 if (checked) {
  82                         return !error;
  83                 }
  84
  85                 checked = true;
  86
  87                 if (value != null) {
  88                         value.check (context);
  89                 }
  90
  91                 return !error;
  92         }
  93 }