class/System.ComponentModel.Composition/src/Composition.Initialization/Microsoft/Internal/Requires.cs

   1 // -----------------------------------------------------------------------
   2 // Copyright (c) Microsoft Corporation.  All rights reserved.
   3 // -----------------------------------------------------------------------
   4 using System;
   5 using System.Collections;
   6 using System.Collections.Generic;
   7 using System.Diagnostics;
   8 using System.Linq;
   9 using System.Globalization;
  10 using System.Reflection;
  11 using System.ComponentModel.Composition;
  12 using System.Text;
  13
  14 namespace Microsoft.Internal
  15 {
  16     internal static class Requires
  17     {
  18         [DebuggerStepThrough]
  19         public static void NotNull<T>(T value, string parameterName)
  20             where T : class
  21         {
  22             if (value == null)
  23             {
  24                 throw new ArgumentNullException(parameterName);
  25             }
  26         }
  27
  28         [DebuggerStepThrough]
  29         public static void NotNullOrEmpty(string value, string parameterName)
  30         {
  31             NotNull(value, parameterName);
  32
  33             if (value.Length == 0)
  34             {
  35                 throw new ArgumentException(string.Format(CultureInfo.CurrentCulture, Strings.ArgumentException_EmptyString, parameterName), parameterName);
  36             }
  37         }
  38     }
  39 }