//
// System.Runtime.Remoting.Messaging.MethodDictionary.cs
//
// Author: Lluis Sanchez Gual (lluis@ideary.com)
//
// 2003 (C) Lluis Sanchez Gual
//
//
// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Collections;
namespace System.Runtime.Remoting.Messaging{
[Serializable]
internal class MethodDictionary : IDictionary
{
IDictionary _internalProperties = null;
protected IMethodMessage _message;
string[] _methodKeys;
bool _ownProperties = false;
public MethodDictionary (IMethodMessage message)
{
_message = message;
}
internal bool HasInternalProperties
{
get
{
if (null != _internalProperties)
{
// MethodCallMessageWrapper uses a nested MethodDictionary
if (_internalProperties is MethodDictionary)
return ((MethodDictionary)_internalProperties).HasInternalProperties;
else
return _internalProperties.Count > 0;
}
return false;
}
}
internal IDictionary InternalProperties
{
get
{
if (null != _internalProperties)
{
if (_internalProperties is MethodDictionary)
return ((MethodDictionary)_internalProperties).InternalProperties;
}
return _internalProperties;
}
}
public string[] MethodKeys
{
get { return _methodKeys; }
set { _methodKeys = value; }
}
protected virtual IDictionary AllocInternalProperties()
{
_ownProperties = true;
return new Hashtable();
}
public IDictionary GetInternalProperties()
{
if (_internalProperties == null) _internalProperties = AllocInternalProperties();
return _internalProperties;
}
private bool IsOverridenKey (string key)
{
// Small optimization. If the internal properties have been
// created by this dictionary, then it can be assured that it does
// not contain values for overriden keys.
if (_ownProperties) return false;
foreach (string mkey in _methodKeys)
if (key == mkey) return true;
return false;
}
public MethodDictionary(string[] keys)
{
_methodKeys = keys;
}
public bool IsFixedSize
{
get { return false; }
}
public bool IsReadOnly
{
get { return false; }
}
public object this[object key]
{
get
{
string keyStr = (string)key;
for (int n=0; n<_methodKeys.Length; n++)
if (_methodKeys[n] == keyStr) return GetMethodProperty (keyStr);
if (_internalProperties != null)
return _internalProperties[key];
else
return null;
}
set
{
Add (key, value);
}
}
protected virtual object GetMethodProperty (string key)
{
switch (key)
{
case "__Uri" : return _message.Uri;
case "__MethodName" : return _message.MethodName;
case "__TypeName" : return _message.TypeName;
case "__MethodSignature" : return _message.MethodSignature;
case "__CallContext" : return _message.LogicalCallContext;
case "__Args" : return _message.Args;
case "__OutArgs": return ((IMethodReturnMessage)_message).OutArgs;
case "__Return": return ((IMethodReturnMessage)_message).ReturnValue;
default : return null;
}
}
protected virtual void SetMethodProperty (string key, object value)
{
switch (key)
{
case "__CallContext": // Ignore?
case "__OutArgs":
case "__Return": return;
case "__MethodName" :
case "__TypeName" :
case "__MethodSignature" :
case "__Args" : throw new ArgumentException ("key was invalid");
case "__Uri": ((IInternalMessage)_message).Uri = (string) value; return;
}
}
public ICollection Keys
{
get
{
ArrayList keys = new ArrayList();
for (int n=0; n<_methodKeys.Length; n++)
keys.Add (_methodKeys[n]);
if (_internalProperties != null)
{
foreach (string key in _internalProperties.Keys)
if (!IsOverridenKey (key)) keys.Add (key);
}
return keys;
}
}
public ICollection Values
{
get
{
ArrayList values = new ArrayList();
for (int n=0; n<_methodKeys.Length; n++)
values.Add (GetMethodProperty(_methodKeys[n]));
if (_internalProperties != null)
{
foreach (DictionaryEntry entry in _internalProperties)
if (!IsOverridenKey((string)entry.Key)) values.Add (entry.Value);
}
return values;
}
}
public void Add (object key, object value)
{
string keyStr = (string)key;
for (int n=0; n<_methodKeys.Length; n++)
if (_methodKeys[n] == keyStr) {
SetMethodProperty (keyStr, value);
return;
}
if (_internalProperties == null) _internalProperties = AllocInternalProperties();
_internalProperties[key] = value;
}
public void Clear ()
{
if (_internalProperties != null) _internalProperties.Clear();
}
public bool Contains (object key)
{
string keyStr = (string)key;
for (int n=0; n<_methodKeys.Length; n++)
if (_methodKeys[n] == keyStr) return true;
if (_internalProperties != null) return _internalProperties.Contains (key);
else return false;
}
public void Remove (object key)
{
string keyStr = (string)key;
for (int n=0; n<_methodKeys.Length; n++)
if (_methodKeys[n] == keyStr) throw new ArgumentException ("key was invalid");
if (_internalProperties != null) _internalProperties.Remove (key);
}
public int Count
{
get
{
if (_internalProperties != null) return _internalProperties.Count + _methodKeys.Length;
else return _methodKeys.Length;
}
}
public bool IsSynchronized
{
get { return false; }
}
public object SyncRoot
{
get { return this; }
}
public void CopyTo (Array array, int index)
{
Values.CopyTo (array, index);
}
IEnumerator IEnumerable.GetEnumerator()
{
return new DictionaryEnumerator (this);
}
public IDictionaryEnumerator GetEnumerator ()
{
return new DictionaryEnumerator (this);
}
// Dictionary enumerator
class DictionaryEnumerator : IDictionaryEnumerator
{
MethodDictionary _methodDictionary;
IDictionaryEnumerator _hashtableEnum;
int _posMethod;
public DictionaryEnumerator (MethodDictionary methodDictionary)
{
_methodDictionary = methodDictionary;
_hashtableEnum = (_methodDictionary._internalProperties != null) ? _methodDictionary._internalProperties.GetEnumerator() : null;
_posMethod = -1;
}
public object Current
{
get {return Entry.Value; }
}
public bool MoveNext()
{
if (_posMethod != -2)
{
_posMethod++;
if (_posMethod < _methodDictionary._methodKeys.Length) return true;
_posMethod = -2;
}
if (_hashtableEnum == null) return false;
while (_hashtableEnum.MoveNext())
{
if (!_methodDictionary.IsOverridenKey((string)_hashtableEnum.Key))
return true;
}
return false;
}
public void Reset()
{
_posMethod = -1;
_hashtableEnum.Reset();
}
public DictionaryEntry Entry
{
get
{
if (_posMethod >= 0)
return new DictionaryEntry (_methodDictionary._methodKeys[_posMethod], _methodDictionary.GetMethodProperty(_methodDictionary._methodKeys[_posMethod]));
else if (_posMethod == -1 || _hashtableEnum == null)
throw new InvalidOperationException ("The enumerator is positioned before the first element of the collection or after the last element");
else
return _hashtableEnum.Entry;
}
}
public object Key
{
get { return Entry.Key; }
}
public object Value
{
get { return Entry.Value; }
}
}
}
}
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