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[Modify] Throw exception

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sta 2019-06-14 19:33:42 +09:00
parent 7ca9165fae
commit 2c15560779
1 changed files with 22 additions and 6 deletions
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28
websocket-sharp/Ext.cs
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@ -1665,14 +1665,30 @@ namespace WebSocketSharp
/// </typeparam> /// </typeparam>
public static T[] SubArray<T> (this T[] array, long startIndex, long length) public static T[] SubArray<T> (this T[] array, long startIndex, long length)
{ {
long len; if (array == null)
if (array == null || (len = array.LongLength) == 0) throw new ArgumentNullException ("array");
var len = array.LongLength;
if (len == 0) {
if (startIndex != 0)
throw new ArgumentOutOfRangeException ("startIndex");
if (length != 0)
throw new ArgumentOutOfRangeException ("length");
return array;
}
if (startIndex < 0 || startIndex >= len)
throw new ArgumentOutOfRangeException ("startIndex");
if (length < 0 || length > len - startIndex)
throw new ArgumentOutOfRangeException ("length");
if (length == 0)
return new T[0]; return new T[0];
if (startIndex < 0 || length <= 0 || startIndex + length > len) if (length == len)
return new T[0];
if (startIndex == 0 && length == len)
return array; return array;
var subArray = new T[length]; var subArray = new T[length];