src/Boo.Lang.Compiler/Ast/Statement.cs

   1 #region license
   2 // Copyright (c) 2004, Rodrigo B. de Oliveira (rbo@acm.org)
   3 // All rights reserved.
   4 //
   5 // Redistribution and use in source and binary forms, with or without modification,
   6 // are permitted provided that the following conditions are met:
   7 //
   8 //     * Redistributions of source code must retain the above copyright notice,
   9 //     this list of conditions and the following disclaimer.
  10 //     * Redistributions in binary form must reproduce the above copyright notice,
  11 //     this list of conditions and the following disclaimer in the documentation
  12 //     and/or other materials provided with the distribution.
  13 //     * Neither the name of Rodrigo B. de Oliveira nor the names of its
  14 //     contributors may be used to endorse or promote products derived from this
  15 //     software without specific prior written permission.
  16 //
  17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  18 // ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  19 // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  20 // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
  21 // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22 // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  23 // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  24 // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  25 // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26 // THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27 #endregion
  28
  29 using System;
  30
  31 namespace Boo.Lang.Compiler.Ast
  32 {
  33         [System.Xml.Serialization.XmlInclude(typeof(DeclarationStatement))]
  34         [System.Xml.Serialization.XmlInclude(typeof(TryStatement))]
  35         [System.Xml.Serialization.XmlInclude(typeof(IfStatement))]
  36         [System.Xml.Serialization.XmlInclude(typeof(UnlessStatement))]
  37         [System.Xml.Serialization.XmlInclude(typeof(ForStatement))]
  38         [System.Xml.Serialization.XmlInclude(typeof(WhileStatement))]
  39         [System.Xml.Serialization.XmlInclude(typeof(BreakStatement))]
  40         [System.Xml.Serialization.XmlInclude(typeof(ContinueStatement))]
  41         [System.Xml.Serialization.XmlInclude(typeof(ReturnStatement))]
  42         [System.Xml.Serialization.XmlInclude(typeof(YieldStatement))]
  43         [System.Xml.Serialization.XmlInclude(typeof(RaiseStatement))]
  44         [System.Xml.Serialization.XmlInclude(typeof(UnpackStatement))]
  45         [System.Xml.Serialization.XmlInclude(typeof(ExpressionStatement))]
  46         [System.Xml.Serialization.XmlInclude(typeof(MacroStatement))]
  47         public abstract partial class Statement
  48         {
  49                 public static Statement Lift(Statement node)
  50                 {
  51                         return node;
  52                 }
  53
  54                 public static Statement Lift(Expression node)
  55                 {
  56                         return new ExpressionStatement(node);
  57                 }
  58
  59                 public Statement()
  60                 {
  61                 }
  62
  63                 public Statement(StatementModifier modifier)
  64                 {
  65                         this.Modifier = modifier;
  66                 }
  67
  68                 public Statement(LexicalInfo lexicalInfoProvider) : base(lexicalInfoProvider)
  69                 {
  70                 }
  71
  72                 public virtual Block ToBlock()
  73                 {
  74                         Block b = new Block(LexicalInfo);
  75                         b.Add(this);
  76                         return b;
  77                 }
  78
  79                 public void ReplaceBy(Statement other)
  80                 {
  81                         Block block = (Block)ParentNode;
  82                         if (null == block)
  83                         {
  84                                 throw new InvalidOperationException();
  85                         }
  86
  87                         block.Statements.Replace(this, other);
  88                 }
  89         }
  90 }