// Copyright (c) 2011 AlphaSierraPapa for the SharpDevelop Team
//
// 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;
using System.Collections.Generic;
namespace ICSharpCode.Decompiler.ILAst
{
///
/// Dictionary with default values.
///
internal sealed class DefaultDictionary : IDictionary
{
readonly IDictionary dict;
readonly Func defaultProvider;
public DefaultDictionary(TValue defaultValue, IDictionary dictionary = null)
: this(key => defaultValue, dictionary)
{
}
public DefaultDictionary(Func defaultProvider = null, IDictionary dictionary = null)
{
dict = dictionary ?? new Dictionary();
this.defaultProvider = defaultProvider ?? (key => default(TValue));
}
public TValue this[TKey key] {
get {
TValue val;
if (dict.TryGetValue(key, out val))
return val;
else
return dict[key] = defaultProvider(key);
}
set {
dict[key] = value;
}
}
public ICollection Keys {
get { return dict.Keys; }
}
public ICollection Values {
get { return dict.Values; }
}
public int Count {
get { return dict.Count; }
}
bool ICollection>.IsReadOnly {
get { return false; }
}
public bool ContainsKey(TKey key)
{
return dict.ContainsKey(key);
}
public void Add(TKey key, TValue value)
{
dict.Add(key, value);
}
public bool Remove(TKey key)
{
return dict.Remove(key);
}
public bool TryGetValue(TKey key, out TValue value)
{
return dict.TryGetValue(key, out value);
}
void ICollection>.Add(KeyValuePair item)
{
dict.Add(item);
}
public void Clear()
{
dict.Clear();
}
bool ICollection>.Contains(KeyValuePair item)
{
return dict.Contains(item);
}
void ICollection>.CopyTo(KeyValuePair[] array, int arrayIndex)
{
dict.CopyTo(array, arrayIndex);
}
bool ICollection>.Remove(KeyValuePair item)
{
return dict.Remove(item);
}
IEnumerator> IEnumerable>.GetEnumerator()
{
return dict.GetEnumerator();
}
IEnumerator IEnumerable.GetEnumerator()
{
return dict.GetEnumerator();
}
}
}