shared source/sscli20/jscript/engine/wrappednamespace.cs

   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
  16 namespace Microsoft.JScript {
  17
  18     using Microsoft.JScript.Vsa;
  19     using System;
  20     using System.Reflection;
  21
  22     internal sealed class WrappedNamespace : ActivationObject{
  23       internal String name;
  24
  25       internal WrappedNamespace(String name, VsaEngine engine)
  26         : this(name, engine, true) {
  27       }
  28
  29       internal WrappedNamespace(String name, VsaEngine engine, bool AddReferences)
  30         : base(null) {
  31         this.name = name;
  32         this.engine = engine;
  33         this.isKnownAtCompileTime = true;
  34         if (name.Length > 0 && AddReferences)
  35           engine.TryToAddImplicitAssemblyReference(name);
  36       }
  37
  38       public override MemberInfo[] GetMember(String name, BindingFlags bindingAttr){
  39         FieldInfo cachedfield = (FieldInfo)(this.name_table[name]);
  40         if (cachedfield != null) return new MemberInfo[]{cachedfield};
  41
  42         FieldAttributes attrs = FieldAttributes.Literal;
  43         String fullname = this.name == null || this.name.Length == 0 ? name : this.name+"."+name;
  44         Object t = null;
  45         if (this.name != null && this.name.Length > 0)
  46           t = this.engine.GetClass(fullname); //Packages will not have classes residing in the default name space
  47         if (t == null){
  48           t = this.engine.GetType(fullname);
  49           if (t != null && !((Type)t).IsPublic){
  50             if ((bindingAttr & BindingFlags.NonPublic) == 0)
  51               t = null;
  52             else
  53               attrs |= FieldAttributes.Private;
  54           }
  55         }else{
  56           if ((((ClassScope)t).owner.attributes&TypeAttributes.Public) == 0){
  57             if ((bindingAttr & BindingFlags.NonPublic) == 0)
  58               t = null;
  59             else
  60               attrs |= FieldAttributes.Private;
  61           }
  62         }
  63         if (t == null) {
  64           if (this.parent != null && (bindingAttr&BindingFlags.DeclaredOnly) == 0)
  65             return this.parent.GetMember(name, bindingAttr);
  66           return new MemberInfo[0];
  67         }
  68
  69         JSGlobalField field = (JSGlobalField)this.CreateField(name, attrs, t);
  70         if (engine.doFast)
  71           field.type = new TypeExpression(new ConstantWrapper(Typeob.Type, null));
  72         this.name_table[name] = field;
  73         this.field_table.Add(field);
  74         return new MemberInfo[]{field};
  75       }
  76
  77       public override String ToString(){
  78         return this.name;
  79       }
  80
  81     }
  82
  83 }