warn on datatype explicitly null

dotnet · Dec 15, 2023 · 5c3394e · 5c3394e
1 parent 27180c4
commit 5c3394e
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Showing 6 changed files with 13 additions and 9 deletions.
diff --git a/src/Compatibility/ControlGallery/src/Core/Compatibility.ControlGallery.Core.csproj b/src/Compatibility/ControlGallery/src/Core/Compatibility.ControlGallery.Core.csproj
@@ -3,21 +3,20 @@
     <TargetFramework>netstandard2.0</TargetFramework>
     <AssemblyName>Microsoft.Maui.Controls.Compatibility.ControlGallery</AssemblyName>
     <RootNamespace>Microsoft.Maui.Controls.Compatibility.ControlGallery</RootNamespace>
+    <WarningLevel>4</WarningLevel>
+    <NoWarn>0114;0108;0109;4014;0649;0169;0472;0414;0168;0219;0429;0618;0612</NoWarn>
+    <WarningsNotAsErrors>$(WarningsNotAsErrors);XC10101;XC10102</WarningsNotAsErrors>
   </PropertyGroup>
   <PropertyGroup>
     <XFDisableTargetsValidation>True</XFDisableTargetsValidation>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DefineConstants>TRACE;DEBUG;PERF;APP</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
-    <WarningLevel>4</WarningLevel>
-    <NoWarn>0114;0108;0109;4014;0649;0169;0472;0414;0168;0219;0429;0618;0612</NoWarn>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DefineConstants>TRACE;APP</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
-    <WarningLevel>4</WarningLevel>
-    <NoWarn>0114;0108;0109;4014;0649;0169;0472;0414;0168;0219;0429;0618;0612</NoWarn>
   </PropertyGroup>
   <PropertyGroup Condition="$(TargetFramework.StartsWith('uap10.0'))">
     <DefineConstants>$(DefineConstants);WINDOWS</DefineConstants>

diff --git a/src/Controls/samples/Directory.Build.props b/src/Controls/samples/Directory.Build.props
@@ -2,6 +2,7 @@
   <PropertyGroup>
     <SampleProject>true</SampleProject>
     <UseMaui Condition=" '$(UseWorkload)' == 'true' ">true</UseMaui>
+    <WarningsNotAsErrors>$(WarningsNotAsErrors);XC10101;XC10102</WarningsNotAsErrors>
   </PropertyGroup>
   <Import Project="../../../Directory.Build.props" />
-</Project>
+</Project>
diff --git a/src/Controls/src/Build.Tasks/SetPropertiesVisitor.cs b/src/Controls/src/Build.Tasks/SetPropertiesVisitor.cs
@@ -397,7 +397,10 @@ static IEnumerable<Instruction> CompileBindingPath(ElementNode node, ILContext c
 			if (dataTypeNode is ElementNode enode
 				&& enode.XmlType.NamespaceUri == XamlParser.X2009Uri
 				&& enode.XmlType.Name == nameof(Microsoft.Maui.Controls.Xaml.NullExtension))
+			{
+				context.LoggingHelper.LogWarningOrError(10102, context.XamlFilePath, node.LineNumber, node.LinePosition, 0, 0, $"Binding could be compiled if x:DataType is not explicitly null", null);
 				yield break;
+			}
 
 			string dataType = null;
 

diff --git a/src/Controls/tests/Xaml.UnitTests/Controls.Xaml.UnitTests.csproj b/src/Controls/tests/Xaml.UnitTests/Controls.Xaml.UnitTests.csproj
@@ -5,8 +5,8 @@
     <RootNamespace>Microsoft.Maui.Controls.Xaml.UnitTests</RootNamespace>
     <AssemblyName>Microsoft.Maui.Controls.Xaml.UnitTests</AssemblyName>
     <WarningLevel>4</WarningLevel>
-    <NoWarn>0672;0219;0414;CS0436;CS0618</NoWarn>
-    <WarningsNotAsErrors>XC0618;XC10101</WarningsNotAsErrors>
+    <NoWarn>$(NoWarn);0672;0219;0414;CS0436;CS0618</NoWarn>
+    <WarningsNotAsErrors>$(WarningsNotAsErrors);XC0618;XC10101;XC10102</WarningsNotAsErrors>
     <IsPackable>false</IsPackable>
     <DisableMSBuildAssemblyCopyCheck>true</DisableMSBuildAssemblyCopyCheck>
   </PropertyGroup>

diff --git a/src/Essentials/samples/Directory.Build.props b/src/Essentials/samples/Directory.Build.props
@@ -2,6 +2,7 @@
   <PropertyGroup>
     <SampleProject>true</SampleProject>
     <UseMaui Condition=" '$(UseWorkload)' == 'true' ">true</UseMaui>
+    <WarningsNotAsErrors>$(WarningsNotAsErrors);XC10101;XC10102</WarningsNotAsErrors>
   </PropertyGroup>
   <Import Project="../../../Directory.Build.props" />
-</Project>
+</Project>
diff --git a/src/TestUtils/src/DeviceTests.Runners/TestUtils.DeviceTests.Runners.csproj b/src/TestUtils/src/DeviceTests.Runners/TestUtils.DeviceTests.Runners.csproj
@@ -7,7 +7,7 @@
     <AssemblyName>Microsoft.Maui.TestUtils.DeviceTests.Runners</AssemblyName>
     <!--<Nullable>enable</Nullable>-->
     <NoWarn>$(NoWarn);CA1416</NoWarn>
-    <WarningsNotAsErrors>XC10101</WarningsNotAsErrors>
+    <WarningsNotAsErrors>$(WarningsNotAsErrors);XC10101;XC10102</WarningsNotAsErrors>
   </PropertyGroup>
 
   <ItemGroup>