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CollectionOperation.cs
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149 lines (132 loc) · 3.86 KB
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#region -- License Terms --
//
// MessagePack for CLI
//
// Copyright (C) 2010-2016 FUJIWARA, Yusuke
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#endregion -- License Terms --
#if UNITY_5 || UNITY_STANDALONE || UNITY_WEBPLAYER || UNITY_WII || UNITY_IPHONE || UNITY_ANDROID || UNITY_PS3 || UNITY_XBOX360 || UNITY_FLASH || UNITY_BKACKBERRY || UNITY_WINRT
#define UNITY
#endif
using System;
using System.Collections.Generic;
#if CORE_CLR || UNITY || NETSTANDARD1_1
using Contract = MsgPack.MPContract;
#else
using System.Diagnostics.Contracts;
#endif // CORE_CLR || UNITY || NETSTANDARD1_1
using System.Linq;
namespace MsgPack
{
internal static class CollectionOperation
{
public static void CopyTo<T>( IEnumerable<T> source, int sourceCount, int index, T[] array, int arrayIndex, int count )
{
ValidateCopyToArguments( sourceCount, index, array, arrayIndex, count );
var i = 0;
foreach ( var item in source.Skip( index ).Take( count ) )
{
array[ i + arrayIndex ] = item;
i++;
}
}
public static void CopyTo<TSource, TDestination>( IEnumerable<TSource> source, int sourceCount, int index, TDestination[] array, int arrayIndex, int count, Func<TSource, TDestination> converter )
{
ValidateCopyToArguments( sourceCount, index, array, arrayIndex, count );
Contract.Assert( converter != null, "converter != null" );
int i = 0;
foreach ( var item in source.Skip( index ).Take( count ) )
{
array[ i + arrayIndex ] = converter( item );
i++;
}
}
// ReSharper disable UnusedParameter.Local
private static void ValidateCopyToArguments<T>( int sourceCount, int index, T[] array, int arrayIndex, int count )
// ReSharper restore UnusedParameter.Local
{
if ( array == null )
{
throw new ArgumentNullException( "array" );
}
if ( index < 0 )
{
throw new ArgumentOutOfRangeException( "index" );
}
if ( 0 < sourceCount && sourceCount <= index )
{
throw new ArgumentException(
"index is too large to finish copying.",
"index"
);
}
if ( arrayIndex < 0 )
{
throw new ArgumentOutOfRangeException( "arrayIndex" );
}
if ( array.Length - arrayIndex < count )
{
throw new ArgumentException(
"array is too small to finish copying.",
"array"
);
}
}
public static void CopyTo<T>( IEnumerable<T> source, int sourceCount, Array array, int arrayIndex )
{
if ( array == null )
{
throw new ArgumentNullException( "array" );
}
if ( array.Rank != 1 || array.GetLowerBound( 0 ) != 0 )
{
throw new ArgumentException( "array is not zero-based one dimensional array.", "array" );
}
if ( arrayIndex < 0 )
{
throw new ArgumentOutOfRangeException( "arrayIndex" );
}
if ( array.Length - arrayIndex < sourceCount )
{
throw new ArgumentException(
"array is too small to finish copying.",
"array"
);
}
var asVector = array as T[];
if ( asVector != null )
{
CopyTo( source, sourceCount, 0, asVector, arrayIndex, asVector.Length );
return;
}
int i = 0;
foreach ( var item in source )
{
try
{
array.SetValue( item, i + arrayIndex );
i++;
}
catch ( InvalidCastException )
{
throw new ArgumentException(
"The type of destination array is not compatible to the type of items in the collection.",
"array"
);
}
}
}
}
}