Detect Microsoft.Bcl.Memory and disable related polyfills (#21)

Author: Tyrrrz

PolyShim/NetCore30/Index.cs

@@ -1,7 +1,7 @@
 // The following comment is required to instruct analyzers to skip this file
 // <auto-generated/>
 
-#if (NETCOREAPP && !NETCOREAPP3_0_OR_GREATER) || (NETFRAMEWORK) || (NETSTANDARD && !NETSTANDARD2_1_OR_GREATER)
+#if !FEATURE_INDEXRANGE
 #nullable enable
 // ReSharper disable RedundantUsingDirective
 // ReSharper disable CheckNamespace

PolyShim/NetCore30/Range.cs

@@ -1,7 +1,7 @@
 // The following comment is required to instruct analyzers to skip this file
 // <auto-generated/>
 
-#if (NETCOREAPP && !NETCOREAPP3_0_OR_GREATER) || (NETFRAMEWORK) || (NETSTANDARD && !NETSTANDARD2_1_OR_GREATER)
+#if !FEATURE_INDEXRANGE
 #nullable enable
 // ReSharper disable RedundantUsingDirective
 // ReSharper disable CheckNamespace

PolyShim/NetCore30/RuntimeHelpers.cs

@@ -1,7 +1,7 @@
 // The following comment is required to instruct analyzers to skip this file
 // <auto-generated/>
 
-#if (NETCOREAPP && !NETCOREAPP3_0_OR_GREATER) || (NETFRAMEWORK) || (NETSTANDARD && !NETSTANDARD2_1_OR_GREATER)
+#if !FEATURE_INDEXRANGE
 #nullable enable
 // ReSharper disable RedundantUsingDirective
 // ReSharper disable CheckNamespace

PolyShim/PolyShim.csproj

@@ -55,6 +55,7 @@
     <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.5.4" PrivateAssets="all" Condition="'$(TargetFrameworkIdentifier)' == '.NETStandard' AND $([MSBuild]::VersionLessThan($(TargetFrameworkVersion), '2.0'))" />
     <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.5.4" PrivateAssets="all" Condition="'$(TargetFrameworkIdentifier)' == '.NETFramework' AND $([MSBuild]::VersionGreaterThanOrEquals($(TargetFrameworkVersion), '4.6.1'))" />
     <PackageReference Include="Microsoft.Bcl.Async" Version="1.0.168" PrivateAssets="all" Condition="'$(TargetFrameworkIdentifier)' == '.NETFramework' AND $([MSBuild]::VersionEquals($(TargetFrameworkVersion), '4.0'))" />
+    <PackageReference Include="Microsoft.Bcl.Memory" Version="9.0.1" PrivateAssets="all" Condition="'$(TargetFrameworkIdentifier)' == '.NETFramework' AND $([MSBuild]::VersionEquals($(TargetFrameworkVersion), '4.6.2'))" />
     <PackageReference Include="Microsoft.Net.Http" Version="2.2.29" PrivateAssets="all" Condition="'$(TargetFrameworkIdentifier)' == '.NETFramework' AND $([MSBuild]::VersionEquals($(TargetFrameworkVersion), '4.0'))" />
   </ItemGroup>
 

PolyShim/PolyShim.targets

@@ -39,6 +39,13 @@
       <FeatureHttpClient Condition="$(IsNetCoreApp) AND $([MSBuild]::VersionGreaterThanOrEquals($(TargetFrameworkVersion), '1.0'))">true</FeatureHttpClient>
       <DefineConstants Condition="$(FeatureHttpClient)">$(DefineConstants);FEATURE_HTTPCLIENT</DefineConstants>
 
+      <FeatureIndexRange>false</FeatureIndexRange>
+      <FeatureIndexRange Condition="@(Reference->AnyHaveMetadataValue('Identity', 'Microsoft.Bcl.Memory'))">true</FeatureIndexRange>
+      <FeatureIndexRange Condition="@(PackageDependencies->AnyHaveMetadataValue('Identity', 'Microsoft.Bcl.Memory'))">true</FeatureIndexRange>
+      <FeatureIndexRange Condition="$(IsNetStandard) AND $([MSBuild]::VersionGreaterThanOrEquals($(TargetFrameworkVersion), '2.1'))">true</FeatureIndexRange>
+      <FeatureIndexRange Condition="$(IsNetCoreApp) AND $([MSBuild]::VersionGreaterThanOrEquals($(TargetFrameworkVersion), '3.0'))">true</FeatureIndexRange>
+      <DefineConstants Condition="$(FeatureIndexRange)">$(DefineConstants);FEATURE_INDEXRANGE</DefineConstants>
+
       <FeatureManagement>false</FeatureManagement>
       <FeatureManagement Condition="@(Reference->AnyHaveMetadataValue('Identity', 'System.Management'))">true</FeatureManagement>
       <FeatureManagement Condition="@(PackageDependencies->AnyHaveMetadataValue('Identity', 'System.Management'))">true</FeatureManagement>

Readme.md

@@ -132,6 +132,7 @@ Currently, **PolyShim** has integration with the following packages:
 - [`Microsoft.Bcl.Async`](https://nuget.org/packages/Microsoft.Bcl.Async) — `Task`, `Task<T>`, etc (wider support than the `System.*` variant).
 - [`Microsoft.Bcl.AsyncInterfaces`](https://nuget.org/packages/Microsoft.Bcl.AsyncInterfaces) — `IAsyncEnumerable<T>`, `IAsyncDisposable`, etc.
 - [`Microsoft.Bcl.HashCode`](https://nuget.org/packages/Microsoft.Bcl.HashCode) — `HashCode`, etc.
+- [`Microsoft.Bcl.Memory`](https://nuget.org/packages/Microsoft.Bcl.Memory) — `Index`, `Range`, etc.
 - [`Microsoft.Net.Http`](https://nuget.org/packages/Microsoft.Net.Http) — `HttpClient`, `HttpContent`, etc (wider support than the `System.*` variant).
 
 For example, adding a reference to the `System.Memory` package will enable **PolyShim**'s polyfills that offer `Span<T>` and `Memory<T>`-based method overloads on various built-in types, such as `Stream`: