The Labs \ Source Viewer \ SSCLI \ Microsoft.JScript \ UnaryOp

  1. // ==++==
  2. //
  3. //
  4. // Copyright (c) 2006 Microsoft Corporation. All rights reserved.
  5. //
  6. // The use and distribution terms for this software are contained in the file
  7. // named license.txt, which can be found in the root of this distribution.
  8. // By using this software in any fashion, you are agreeing to be bound by the
  9. // terms of this license.
  10. //
  11. // You must not remove this notice, or any other, from this software.
  12. //
  13. //
  14. // ==--==
  15. namespace Microsoft.JScript
  16. {
  17.    
  18.     using System;
  19.     using System.Reflection;
  20.     using System.Reflection.Emit;
  21.    
  22.     public abstract class UnaryOp : AST
  23.     {
  24.         protected AST operand;
  25.        
  26.         internal UnaryOp(Context context, AST operand) : base(context)
  27.         {
  28.             this.operand = operand;
  29.         }
  30.        
  31.         internal override void CheckIfOKToUseInSuperConstructorCall()
  32.         {
  33.             this.operand.CheckIfOKToUseInSuperConstructorCall();
  34.         }
  35.        
  36.         internal override AST PartiallyEvaluate()
  37.         {
  38.             this.operand = this.operand.PartiallyEvaluate();
  39.             if (this.operand is ConstantWrapper)
  40.                 try {
  41.                     return new ConstantWrapper(this.Evaluate(), this.context);
  42.                 }
  43.                 catch (JScriptException e) {
  44.                     this.context.HandleError((JSError)(e.ErrorNumber & 65535));
  45.                 }
  46.                 catch {
  47.                     this.context.HandleError(JSError.TypeMismatch);
  48.                 }
  49.             return this;
  50.         }
  51.        
  52.         internal override void TranslateToILInitializer(ILGenerator il)
  53.         {
  54.             this.operand.TranslateToILInitializer(il);
  55.         }
  56.     }
  57. }

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