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Daily update on 20250316-095544 by Nitload Youmu. Additional Message : Linear math inmprovement

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Signed-off-by: Nitload <YoumuLiu_NSI@whv0t.onmicrosoft.com>
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Nitload
2025-03-16 09:55:44 +08:00
parent 753cc167bc
commit a5aef8506d
58 changed files with 3162 additions and 506 deletions
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StgSharp.Common/Collections/ListSegment.cs
+78 -44
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@@ -1,4 +1,34 @@
using System;
//-----------------------------------------------------------------------
//-----------------------------------------------------------------------
// file="ListSegment.cs"
// Project: StgSharp
// AuthorGroup: Nitload Space
// Copyright (c) Nitload Space. All rights reserved.
//
// 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;
using System.Linq;
@@ -10,42 +40,67 @@ using System.Xml.Serialization;
namespace StgSharp.Collections
{
/// <summary>
/// Part of a collection. This contains a direct reference to origin collection,
/// so all change to origin collection will be reflected in this object.
/// Part of a collection. This contains a direct reference to _origin collection, so all change
/// to _origin collection will be reflected in this object.
/// </summary>
/// <typeparam name="T"></typeparam>
public struct ListSegment<T> : ICollection<T>
{
private List<T> _collection;
private int _begin;
private int _length;
private List<T> _collection;
public ListSegment(List<T> collection, int begin, int length)
public ListSegment( List<T> collection, int begin, int length )
{
ArgumentNullException.ThrowIfNull(collection);
ArgumentOutOfRangeException.ThrowIfLessThan(begin, 0);
ArgumentOutOfRangeException.ThrowIfLessThan(length, 0);
ArgumentOutOfRangeException.ThrowIfLessThan(begin + length, collection.Count);
ArgumentNullException.ThrowIfNull( collection );
ArgumentOutOfRangeException.ThrowIfLessThan( begin, 0 );
ArgumentOutOfRangeException.ThrowIfLessThan( length, 0 );
ArgumentOutOfRangeException.ThrowIfLessThan(
begin + length, collection.Count );
_collection = collection;
_begin = begin;
_length = length;
}
}
public int Count => _length;
public bool IsReadOnly => true;
public T this[int indexValue]
public T this[ int indexValue ]
{
get {
ArgumentOutOfRangeException.ThrowIfLessThan(indexValue, 0);
ArgumentOutOfRangeException.ThrowIfGreaterThanOrEqual(indexValue, _length);
return _collection[indexValue + _begin];
get
{
ArgumentOutOfRangeException.ThrowIfLessThan( indexValue, 0 );
ArgumentOutOfRangeException.ThrowIfGreaterThanOrEqual(
indexValue, _length );
return _collection[ indexValue + _begin ];
}
}
void ICollection<T>.Add(T item)
public bool IsReadOnly => true;
public int Count => _length;
public bool Contains( T item )
{
int index = _collection.IndexOf( item );
return index >= _begin && index < _length + index;
}
public void CopyTo( T[] array, int arrayIndex )
{
ArgumentNullException.ThrowIfNull( array );
Span<T> span = CollectionsMarshal.AsSpan<T>( _collection )
.Slice( _begin, _length );
Span<T> target = new Span<T>( array, arrayIndex, _length );
span.CopyTo( target );
}
public IEnumerator<T> GetEnumerator()
{
for( int i = _begin; i < _length; i++ ) {
yield return this[ i ];
}
}
void ICollection<T>.Add( T item )
{
throw new NotSupportedException();
}
@@ -55,29 +110,7 @@ namespace StgSharp.Collections
throw new NotSupportedException();
}
public bool Contains(T item)
{
var index= _collection.IndexOf(item);
return index >= _begin && index < _length + index;
}
public void CopyTo(T[] array, int arrayIndex)
{
ArgumentNullException.ThrowIfNull(array);
var span = CollectionsMarshal.AsSpan<T>(_collection).Slice(_begin, _length);
var target = new Span<T>(array, arrayIndex,_length);
span.CopyTo(target);
}
public IEnumerator<T> GetEnumerator()
{
for (int i = _begin; i < _length; i++)
{
yield return this[i];
}
}
bool ICollection<T>.Remove(T item)
bool ICollection<T>.Remove( T item )
{
throw new NotSupportedException();
}
@@ -86,5 +119,6 @@ namespace StgSharp.Collections
{
return GetEnumerator();
}
}
}