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Viewing changes to contrib/Mono.Cecil/Mono.Cecil/Mono.Cecil/SecurityDeclarationCollection.cs

  • Committer: Bazaar Package Importer
  • Author(s): Jo Shields
  • Date: 2011-06-27 17:03:13 UTC
  • mto: (1.8.1 upstream)
  • mto: This revision was merged to the branch mainline in revision 54.
  • Revision ID: james.westby@ubuntu.com-20110627170313-6cvz3s19x6e9hqe9
Import upstream version 2.5.92+dfsg

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contrib/Mono.Cecil/Mono.Cecil/Mono.Cecil/SecurityDeclarationCollection.cs
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//
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// SecurityDeclarationCollection.cs
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//
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// Author:
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//   Jb Evain (jbevain@gmail.com)
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//
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// (C) 2005 Jb Evain
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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namespace Mono.Cecil {
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        using System;
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        using System.Collections;
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        public sealed class SecurityDeclarationCollection : IReflectionVisitable, IEnumerable {
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                IDictionary m_items;
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                IHasSecurity m_container;
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                public SecurityDeclaration this [int index] {
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                        get { return m_items [index] as SecurityDeclaration; }
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                        set { m_items [index] = value; }
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                }
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                public SecurityDeclaration this [SecurityAction action] {
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                        get { return m_items [action] as SecurityDeclaration; }
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                        set { m_items [action] = value; }
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                }
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                public IHasSecurity Container {
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                        get { return m_container; }
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                }
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                public int Count {
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                        get { return m_items.Count; }
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                }
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                public bool IsSynchronized {
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                        get { return false; }
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                }
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                public object SyncRoot {
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                        get { return this; }
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                }
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                public SecurityDeclarationCollection (IHasSecurity container)
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                {
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                        m_container = container;
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                        m_items = new Hashtable ();
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                }
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                public void Add (SecurityDeclaration value)
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                {
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                        if (value == null)
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                                throw new ArgumentNullException ("value");
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                        // Each action can only be added once so...
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                        SecurityDeclaration current = (SecurityDeclaration) m_items[value.Action];
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                        if (current != null) {
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                                // ... further additions are transformed into unions
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#if !CF_1_0 && !CF_2_0
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                current.PermissionSet = current.PermissionSet.Union (value.PermissionSet);
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#endif
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                        } else {
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                                m_items.Add (value.Action, value);
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                                SetHasSecurity (true);
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                        }
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                }
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                public void Clear ()
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                {
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                        m_items.Clear ();
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                        SetHasSecurity (false);
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                }
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                public bool Contains (SecurityAction action)
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                {
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                        return (m_items [action] != null);
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                }
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                public bool Contains (SecurityDeclaration value)
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                {
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                        if (value == null)
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                                return (m_items.Count == 0);
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                        SecurityDeclaration item = (SecurityDeclaration) m_items[value.Action];
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                        if (item == null)
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                                return false;
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#if !CF_1_0 && !CF_2_0
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                        return value.PermissionSet.IsSubsetOf (item.PermissionSet);
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#else
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            // XXX For CF, this concept does not exist--so always be true
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            return true;
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#endif
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                }
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                public void Remove (SecurityAction action)
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                {
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                        m_items.Remove (action);
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                        SetHasSecurity (this.Count > 0);
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                }
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                public void CopyTo (Array ary, int index)
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                {
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                        m_items.Values.CopyTo (ary, index);
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                }
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                public IEnumerator GetEnumerator ()
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                {
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                        return m_items.Values.GetEnumerator ();
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                }
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                public void Accept (IReflectionVisitor visitor)
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                {
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                        visitor.VisitSecurityDeclarationCollection (this);
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                }
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                private void SetHasSecurity (bool value)
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                {
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                        TypeDefinition td = (m_container as TypeDefinition);
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                        if (td != null) {
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                                if (value)
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                                        td.Attributes |= TypeAttributes.HasSecurity;
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                                else
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                                        td.Attributes &= ~TypeAttributes.HasSecurity;
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                                return;
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                        }
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                        MethodDefinition md = (m_container as MethodDefinition);
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                        if (md != null) {
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                                if (value)
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                                        md.Attributes |= MethodAttributes.HasSecurity;
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                                else
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                                        md.Attributes &= ~MethodAttributes.HasSecurity;
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                        }
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                }
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        }
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}