vala/valablock.vala

   1 /* valablock.vala
   2  *
   3  * Copyright (C) 2006-2007  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 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 source code block.
  27  */
  28 public class Vala.Block : Statement {
  29         /**
  30          * Specifies whether this block contains a jump statement. This
  31          * information can be used to remove unreachable block cleanup code.
  32          */
  33         public bool contains_jump_statement { get; set; }
  34
  35         private List<Statement> statement_list;
  36         private List<VariableDeclarator> local_variables;
  37
  38         /**
  39          * Creates a new block.
  40          *
  41          * @param source reference to source code
  42          */
  43         public Block (SourceReference source = null) {
  44                 source_reference = source;
  45         }
  46
  47         /**
  48          * Append a statement to this block.
  49          *
  50          * @param stmt a statement
  51          */
  52         public void add_statement (Statement! stmt) {
  53                 statement_list.append (stmt);
  54         }
  55
  56         /**
  57          * Returns a copy of the list of statements.
  58          *
  59          * @return statement list
  60          */
  61         public List<weak Statement> get_statements () {
  62                 return statement_list.copy ();
  63         }
  64
  65         /**
  66          * Add a local variable to this block.
  67          *
  68          * @param decl a variable declarator
  69          */
  70         public void add_local_variable (VariableDeclarator! decl) {
  71                 local_variables.append (decl);
  72         }
  73
  74         /**
  75          * Returns a copy of the list of local variables.
  76          *
  77          * @return variable declarator list
  78          */
  79         public List<weak VariableDeclarator> get_local_variables () {
  80                 return local_variables.copy ();
  81         }
  82
  83         public override void accept (CodeVisitor! visitor) {
  84                 visitor.visit_begin_block (this);
  85
  86                 foreach (Statement! stmt in statement_list) {
  87                         stmt.accept (visitor);
  88                 }
  89
  90                 visitor.visit_end_block (this);
  91         }
  92 }