Add RequireNonNull

http://www.yinwang.org/blog-cn/2015/11/21/programming-philosophy

Wox.Infrastructure/StringMatcher.cs

@@ -1,4 +1,7 @@
-namespace Wox.Infrastructure
+using System;
+using JetBrains.Annotations;
+
+namespace Wox.Infrastructure
 {
     public class StringMatcher
     {

Wox.Infrastructure/SyntaxSuger.cs

@@ -0,0 +1,19 @@
+using System;
+
+namespace Wox.Infrastructure
+{
+    static class SyntaxSuger<T>
+    {
+        public static T RequireNonNull(T obj)
+        {
+            if (obj == null)
+            {
+                throw new NullReferenceException();
+            }
+            else
+            {
+                return obj;
+            }
+        }
+    }
+}

Wox.Infrastructure/Wox.Infrastructure.csproj

@@ -68,6 +68,7 @@
     <Compile Include="Hotkey\KeyEvent.cs" />
     <Compile Include="Logger\Log.cs" />
     <Compile Include="Storage\PluginSettingsStorage.cs" />
+    <Compile Include="SyntaxSuger.cs" />
     <Compile Include="WoxDirectroy.cs" />
     <Compile Include="Stopwatch.cs" />
     <Compile Include="Storage\BinaryStorage.cs" />