class/System.Core/System.Runtime.CompilerServices/ExecutionScope.cs

   1 //
   2 // ExecutionScope.cs
   3 //
   4 // Authors:
   5 //      Marek Safar  <marek.safar@gmail.com>
   6 //      Jb Evain  <jbevain@novell.com>
   7 //
   8 // Copyright (C) 2007 - 2008, Novell, Inc (http://www.novell.com)
   9 //
  10 // Permission is hereby granted, free of charge, to any person obtaining
  11 // a copy of this software and associated documentation files (the
  12 // "Software"), to deal in the Software without restriction, including
  13 // without limitation the rights to use, copy, modify, merge, publish,
  14 // distribute, sublicense, and/or sell copies of the Software, and to
  15 // permit persons to whom the Software is furnished to do so, subject to
  16 // the following conditions:
  17 //
  18 // The above copyright notice and this permission notice shall be
  19 // included in all copies or substantial portions of the Software.
  20 //
  21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28 //
  29
  30 using System;
  31 using System.Linq.Expressions;
  32
  33 namespace System.Runtime.CompilerServices {
  34
  35         public class ExecutionScope {
  36
  37                 public object [] Globals;
  38                 public object [] Locals;
  39                 public ExecutionScope Parent;
  40
  41                 internal CompilationContext context;
  42                 internal int compilation_unit;
  43
  44                 ExecutionScope (CompilationContext context, int compilation_unit)
  45                 {
  46                         this.context = context;
  47                         this.compilation_unit = compilation_unit;
  48                         this.Globals = context.GetGlobals ();
  49                 }
  50
  51                 internal ExecutionScope (CompilationContext context)
  52                         : this (context, 0)
  53                 {
  54                 }
  55
  56                 internal ExecutionScope (CompilationContext context, int compilation_unit, ExecutionScope parent, object [] locals)
  57                         : this (context, compilation_unit)
  58                 {
  59                         this.Parent = parent;
  60                         this.Locals = locals;
  61                 }
  62
  63                 public Delegate CreateDelegate (int indexLambda, object [] locals)
  64                 {
  65                         return context.CreateDelegate (
  66                                 indexLambda,
  67                                 new ExecutionScope (context, indexLambda, this, locals));
  68                 }
  69
  70                 public object [] CreateHoistedLocals ()
  71                 {
  72                         return context.CreateHoistedLocals (compilation_unit);
  73                 }
  74
  75                 public Expression IsolateExpression (Expression expression, object [] locals)
  76                 {
  77                         return context.IsolateExpression (this, locals, expression);
  78                 }
  79         }
  80 }