65 lines
2.6 KiB
C#
65 lines
2.6 KiB
C#
/*
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*
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* (c) Copyright Ascensio System Limited 2010-2018
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*
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* This program is freeware. You can redistribute it and/or modify it under the terms of the GNU
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* General Public License (GPL) version 3 as published by the Free Software Foundation (https://www.gnu.org/copyleft/gpl.html).
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* In accordance with Section 7(a) of the GNU GPL its Section 15 shall be amended to the effect that
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* Ascensio System SIA expressly excludes the warranty of non-infringement of any third-party rights.
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*
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* THIS PROGRAM IS DISTRIBUTED WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY OR
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* FITNESS FOR A PARTICULAR PURPOSE. For more details, see GNU GPL at https://www.gnu.org/copyleft/gpl.html
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*
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* You can contact Ascensio System SIA by email at sales@onlyoffice.com
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*
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* The interactive user interfaces in modified source and object code versions of ONLYOFFICE must display
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* Appropriate Legal Notices, as required under Section 5 of the GNU GPL version 3.
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*
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* Pursuant to Section 7 § 3(b) of the GNU GPL you must retain the original ONLYOFFICE logo which contains
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* relevant author attributions when distributing the software. If the display of the logo in its graphic
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* form is not reasonably feasible for technical reasons, you must include the words "Powered by ONLYOFFICE"
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* in every copy of the program you distribute.
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* Pursuant to Section 7 § 3(e) we decline to grant you any rights under trademark law for use of our trademarks.
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*
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*/
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using System;
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using ASC.Common.Web;
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namespace ASC.Api.Utils
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{
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public static class Validate
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{
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public static T If<T>(this T item, Func<T, bool> @if, Func<T> then) where T : class
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{
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return @if(item) ? then() : item;
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}
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public static T IfNull<T>(this T item, Func<T> func) where T : class
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{
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return item.If((x) => x == default(T), func);
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}
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public static T ThrowIfNull<T>(this T item, Exception e) where T : class
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{
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return item.IfNull(() => { throw e; });
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}
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public static T NotFoundIfNull<T>(this T item) where T : class
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{
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return NotFoundIfNull(item, "Item not found");
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}
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public static T NotFoundIfNull<T>(this T item, string message) where T : class
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{
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return item.IfNull(() => { throw new ItemNotFoundException(message); });
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}
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public static T? NullIfDefault<T>(this T item) where T : struct
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{
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return item.Equals(default(T)) ? default(T?) : item;
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}
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}
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} |