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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System.Collections.Immutable;
using System.Composition;
using System.Diagnostics.CodeAnalysis;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.CodeActions;
using Microsoft.CodeAnalysis.CodeFixes;
using Microsoft.CodeAnalysis.CodeFixes.GenerateMember;
using Microsoft.CodeAnalysis.CodeGeneration;
using Microsoft.CodeAnalysis.CSharp.Extensions;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using Microsoft.CodeAnalysis.Diagnostics;
using Microsoft.CodeAnalysis.GenerateType;
using Microsoft.CodeAnalysis.Shared.Extensions;
namespace Microsoft.CodeAnalysis.CSharp.CodeFixes.GenerateType;
[ExportCodeFixProvider(LanguageNames.CSharp, Name = PredefinedCodeFixProviderNames.GenerateType), Shared]
[ExtensionOrder(After = PredefinedCodeFixProviderNames.GenerateVariable)]
internal class GenerateTypeCodeFixProvider : AbstractGenerateMemberCodeFixProvider
{
private const string CS0103 = nameof(CS0103); // error CS0103: The name 'Goo' does not exist in the current context
private const string CS0117 = nameof(CS0117); // error CS0117: 'x' does not contain a definition for 'y'
private const string CS0234 = nameof(CS0234); // error CS0234: The type or namespace name 'C' does not exist in the namespace 'N' (are you missing an assembly reference?)
private const string CS0246 = nameof(CS0246); // error CS0246: The type or namespace name 'T' could not be found (are you missing a using directive or an assembly reference?)
private const string CS0305 = nameof(CS0305); // error CS0305: Using the generic type 'C<T1>' requires 1 type arguments
private const string CS0308 = nameof(CS0308); // error CS0308: The non-generic type 'A' cannot be used with type arguments
private const string CS0426 = nameof(CS0426); // error CS0426: The type name 'S' does not exist in the type 'Program'
private const string CS0616 = nameof(CS0616); // error CS0616: 'x' is not an attribute class
[ImportingConstructor]
[SuppressMessage("RoslynDiagnosticsReliability", "RS0033:Importing constructor should be [Obsolete]", Justification = "Used in test code: https://github.com/dotnet/roslyn/issues/42814")]
public GenerateTypeCodeFixProvider()
{
}
public override ImmutableArray<string> FixableDiagnosticIds
{
get { return [CS0103, CS0117, CS0234, CS0246, CS0305, CS0308, CS0426, CS0616, IDEDiagnosticIds.UnboundIdentifierId]; }
}
protected override bool IsCandidate(SyntaxNode node, SyntaxToken token, Diagnostic diagnostic)
{
switch (node)
{
case QualifiedNameSyntax or MemberAccessExpressionSyntax:
return true;
case SimpleNameSyntax simple:
return !simple.IsParentKind(SyntaxKind.QualifiedName);
}
return false;
}
protected override SyntaxNode? GetTargetNode(SyntaxNode node)
=> ((ExpressionSyntax)node).GetRightmostName();
protected override Task<ImmutableArray<CodeAction>> GetCodeActionsAsync(
Document document, SyntaxNode node, CancellationToken cancellationToken)
{
var service = document.GetRequiredLanguageService<IGenerateTypeService>();
return service.GenerateTypeAsync(document, node, cancellationToken);
}
}
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