Line data    Source code

       1              : /* valabooleanliteral.vala
       2              :  *
       3              :  * Copyright (C) 2006-2010  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              : using GLib;
      24              : 
      25              : /**
      26              :  * Represents a literal boolean, i.e. true or false.
      27              :  */
      28       121755 : public class Vala.BooleanLiteral : Literal {
      29              :         /**
      30              :          * The literal value.
      31              :          */
      32       127221 :         public bool value { get; private set; }
      33              : 
      34              :         /**
      35              :          * Creates a new boolean literal.
      36              :          *
      37              :          * @param b      boolean value
      38              :          * @param source reference to source code
      39              :          * @return       newly created boolean literal
      40              :          */
      41       240436 :         public BooleanLiteral (bool b, SourceReference? source = null) {
      42       120218 :                 value = b;
      43       120218 :                 source_reference = source;
      44              :         }
      45              : 
      46       172046 :         public override void accept (CodeVisitor visitor) {
      47       172046 :                 visitor.visit_boolean_literal (this);
      48              : 
      49       172046 :                 visitor.visit_expression (this);
      50              :         }
      51              : 
      52            0 :         public override string to_string () {
      53            0 :                 if (value) {
      54            0 :                         return "true";
      55              :                 } else {
      56            0 :                         return "false";
      57              :                 }
      58              :         }
      59              : 
      60            0 :         public override bool is_pure () {
      61            0 :                 return true;
      62              :         }
      63              : 
      64       116745 :         public override bool check (CodeContext context) {
      65       116745 :                 if (checked) {
      66          684 :                         return !error;
      67              :                 }
      68              : 
      69       116061 :                 checked = true;
      70              : 
      71       116061 :                 value_type = context.analyzer.bool_type;
      72              : 
      73       116061 :                 return !error;
      74              :         }
      75              : 
      76         6851 :         public override void emit (CodeGenerator codegen) {
      77         6851 :                 codegen.visit_boolean_literal (this);
      78              : 
      79         6851 :                 codegen.visit_expression (this);
      80              :         }
      81              : }