ccode/valaccodeforstatement.vala

   1 /* valaccodeforstatement.vala
   2  *
   3  * Copyright (C) 2006-2008  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 a for iteration statement in the C code.
  27  */
  28 public class Vala.CCodeForStatement : CCodeStatement {
  29         /**
  30          * The loop condition.
  31          */
  32         public CCodeExpression? condition { get; set; }
  33
  34         /**
  35          * The loop body.
  36          */
  37         public CCodeStatement body { get; set; }
  38
  39         private List<CCodeExpression> initializer = new ArrayList<CCodeExpression> ();
  40         private List<CCodeExpression> iterator = new ArrayList<CCodeExpression> ();
  41
  42         public CCodeForStatement (CCodeExpression? condition, CCodeStatement? body = null) {
  43                 this.condition = condition;
  44                 this.body = body;
  45         }
  46
  47         /**
  48          * Appends the specified expression to the list of initializers.
  49          *
  50          * @param expr an initializer expression
  51          */
  52         public void add_initializer (CCodeExpression expr) {
  53                 initializer.add (expr);
  54         }
  55
  56         /**
  57          * Appends the specified expression to the iterator.
  58          *
  59          * @param expr an iterator expression
  60          */
  61         public void add_iterator (CCodeExpression expr) {
  62                 iterator.add (expr);
  63         }
  64
  65         public override void write (CCodeWriter writer) {
  66                 bool first;
  67
  68                 writer.write_indent (line);
  69                 writer.write_string ("for (");
  70
  71                 first = true;
  72                 foreach (CCodeExpression init_expr in initializer) {
  73                         if (!first) {
  74                                 writer.write_string (", ");
  75                         } else {
  76                                 first = false;
  77                         }
  78                         if (init_expr != null) {
  79                                 init_expr.write (writer);
  80                         }
  81                 }
  82
  83                 writer.write_string ("; ");
  84                 if (condition != null) {
  85                         condition.write (writer);
  86                 }
  87                 writer.write_string ("; ");
  88
  89                 first = true;
  90                 foreach (CCodeExpression it_expr in iterator) {
  91                         if (!first) {
  92                                 writer.write_string (", ");
  93                         } else {
  94                                 first = false;
  95                         }
  96                         if (it_expr != null) {
  97                                 it_expr.write (writer);
  98                         }
  99                 }
 100
 101                 writer.write_string (")");
 102                 body.write (writer);
 103         }
 104 }