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GrammarDefinitionOrderedParentChildrenCollection.cs
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GrammarDefinitionOrderedParentChildrenCollection.cs
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// MetaphysicsIndustries.Giza - A Parsing System
// Copyright (C) 2008-2022 Metaphysics Industries, Inc.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 3 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
// USA
/*****************************************************************************
* *
* GrammarDefinitionOrderedParentChildrenCollection.cs *
* 18 June 2013 *
* Project: MetaphysicsIndustries.Giza *
* Written by: Richard Sartor *
* *
* An ordered collection of Definition objects. *
* *
*****************************************************************************/
using System;
using System.Collections.Generic;
namespace MetaphysicsIndustries.Giza
{
/// <summary>
/// An ordered collection of NDefinition objects.
/// </summary>
public class GrammarDefinitionOrderedParentChildrenCollection :
IList<NDefinition>, IDisposable
{
public GrammarDefinitionOrderedParentChildrenCollection(NGrammar container)
{
_container = container;
}
public virtual void Dispose()
{
Clear();
}
public void AddRange(params NDefinition[] items)
{
AddRange((IEnumerable<NDefinition>)items);
}
public void AddRange(IEnumerable<NDefinition> items)
{
foreach (var item in items)
{
Add(item);
}
}
public void RemoveRange(params NDefinition[] items)
{
RemoveRange((IEnumerable<NDefinition>)items);
}
public void RemoveRange(IEnumerable<NDefinition> items)
{
foreach (var item in items)
{
Remove(item);
}
}
//ICollection<NDefinition>
public virtual void Add(NDefinition item)
{
if (!Contains(item))
{
_list.Add(item);
item.ParentGrammar = _container;
}
}
public virtual bool Contains(NDefinition item)
{
return _list.Contains(item);
}
public virtual bool Remove(NDefinition item)
{
if (Contains(item))
{
bool ret = _list.Remove(item);
item.ParentGrammar = null;
return ret;
}
return false;
}
public virtual void Clear()
{
var array = new NDefinition[Count];
CopyTo(array, 0);
foreach (var item in array)
{
Remove(item);
}
_list.Clear();
}
public virtual void CopyTo(NDefinition[] array, int arrayIndex)
{
_list.CopyTo(array, arrayIndex);
}
public virtual IEnumerator<NDefinition> GetEnumerator()
{
return _list.GetEnumerator();
}
//IList<NDefinition>
public virtual int IndexOf(NDefinition item)
{
return _list.IndexOf(item);
}
public virtual void Insert(int index, NDefinition item)
{
if (Contains(item))
{
if (IndexOf(item) < index)
{
index--;
}
Remove(item);
}
item.ParentGrammar = null;
_list.Insert(index, item);
item.ParentGrammar = _container;
}
public virtual void RemoveAt(int index)
{
Remove(this[index]);
}
//ICollection<NDefinition>
public virtual int Count
{
get { return _list.Count; }
}
public virtual bool IsReadOnly =>
(_list as ICollection<NDefinition>).IsReadOnly;
System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
{
return GetEnumerator();
}
//IList<NDefinition>
public virtual NDefinition this [ int index ]
{
get { return _list[index]; }
set
{
RemoveAt(index);
Insert(index, value);
}
}
private readonly NGrammar _container;
private readonly List<NDefinition> _list = new List<NDefinition>();
}
}