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Polyfill the incremental generator ForAttributeWithMetadataName from roslyn (for LibraryImportGenerator). #71652

Merged
merged 8 commits into from
Jul 13, 2022
2 changes: 1 addition & 1 deletion eng/Versions.props
Original file line number Diff line number Diff line change
Expand Up @@ -36,7 +36,7 @@
This version is a moving target until we ship.
It should never go ahead of the Roslyn version included in the SDK version in dotnet/arcade's global.json to avoid causing breaks in product construction.
-->
<MicrosoftCodeAnalysisVersion_4_X>4.2.0-2.final</MicrosoftCodeAnalysisVersion_4_X>
<MicrosoftCodeAnalysisVersion_4_X>4.3.0-2.final</MicrosoftCodeAnalysisVersion_4_X>
</PropertyGroup>
<PropertyGroup>
<!-- Code analysis dependencies -->
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using Microsoft.CodeAnalysis.DotnetRuntime.Extensions;
using static Microsoft.CodeAnalysis.CSharp.SyntaxFactory;

[assembly: System.Resources.NeutralResourcesLanguage("en-US")]
Expand Down Expand Up @@ -61,19 +62,13 @@ public static class StepNames
public void Initialize(IncrementalGeneratorInitializationContext context)
{
var attributedMethods = context.SyntaxProvider
.CreateSyntaxProvider(
static (node, ct) => ShouldVisitNode(node),
static (context, ct) =>
{
MethodDeclarationSyntax syntax = (MethodDeclarationSyntax)context.Node;
if (context.SemanticModel.GetDeclaredSymbol(syntax, ct) is IMethodSymbol methodSymbol
&& methodSymbol.GetAttributes().Any(static attribute => attribute.AttributeClass?.ToDisplayString() == TypeNames.LibraryImportAttribute))
{
return new { Syntax = syntax, Symbol = methodSymbol };
}
return null;
})
.ForAttributeWithMetadataName(
context,
TypeNames.LibraryImportAttribute,
static (node, ct) => node is MethodDeclarationSyntax,
static (context, ct) => context.TargetSymbol is IMethodSymbol methodSymbol
? new { Syntax = (MethodDeclarationSyntax)context.TargetNode, Symbol = methodSymbol }
: null)
.Where(
static modelData => modelData is not null);

Expand Down Expand Up @@ -584,19 +579,6 @@ static ExpressionSyntax CreateEnumExpressionSyntax<T>(T value) where T : Enum
}
}

private static bool ShouldVisitNode(SyntaxNode syntaxNode)
{
// We only support C# method declarations.
if (syntaxNode.Language != LanguageNames.CSharp
|| !syntaxNode.IsKind(SyntaxKind.MethodDeclaration))
{
return false;
}

// Filter out methods with no attributes early.
return ((MethodDeclarationSyntax)syntaxNode).AttributeLists.Count > 0;
}

private static Diagnostic? GetDiagnosticIfInvalidMethodForGeneration(MethodDeclarationSyntax methodSyntax, IMethodSymbol method)
{
// Verify the method has no generic types or defined implementation
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Original file line number Diff line number Diff line change
Expand Up @@ -35,4 +35,19 @@
<ProjectReference Include="..\Microsoft.Interop.SourceGeneration\Microsoft.Interop.SourceGeneration.csproj" Pack="true" PackagePath="analyzers/dotnet/cs" />
</ItemGroup>

<ItemGroup>
<Compile Include="$(CommonPath)Roslyn\GetBestTypeByMetadataName.cs" Link="Common\Roslyn\GetBestTypeByMetadataName.cs" />
<Compile Include="$(CommonPath)Roslyn\Hash.cs" Link="Common\Roslyn\Hash.cs" />
<Compile Include="$(CommonPath)Roslyn\ISyntaxHelper.cs" Link="Common\Roslyn\ISyntaxHelper.cs" />
<Compile Include="$(CommonPath)Roslyn\CSharpSyntaxHelper.cs" Link="Common\Roslyn\CSharpSyntaxHelper.cs" />
<Compile Include="$(CommonPath)Roslyn\GlobalAliases.cs" Link="Common\Roslyn\GlobalAliases.cs" />
<Compile Include="$(CommonPath)Roslyn\SyntaxNodeGrouping.cs" Link="Common\Roslyn\SyntaxNodeGrouping.cs" />
<Compile Include="$(CommonPath)Roslyn\SyntaxValueProvider.ImmutableArrayValueComparer.cs" Link="Common\Roslyn\SyntaxValueProvider.ImmutableArrayValueComparer.cs" />
<Compile Include="$(CommonPath)Roslyn\SyntaxValueProvider_ForAttributeWithMetadataName.cs" Link="Common\Roslyn\SyntaxValueProvider_ForAttributeWithMetadataName.cs" />
<Compile Include="$(CommonPath)Roslyn\SyntaxValueProvider_ForAttributeWithSimpleName.cs" Link="Common\Roslyn\SyntaxValueProvider_ForAttributeWithSimpleName.cs" />

<Compile Include="$(CoreLibSharedDir)System\Collections\Generic\ValueListBuilder.cs" Link="Production\ValueListBuilder.cs" />
<Compile Include="$(CoreLibSharedDir)System\Collections\Generic\ValueListBuilder.Pop.cs" Link="Production\ValueListBuilder.Pop.cs" />
</ItemGroup>

</Project>