Question

我最后开始探索Roslyn，现在我想编写一个CodeRefactoringProvider来创建一个新文件，而不是替换当前的代码。我当前的代码简单地重命名了这样一个类：

[ExportCodeRefactoringProvider(LanguageNames.CSharp, Name = nameof(TransportModelCodeRefactoringProvider)), Shared]
internal class TransportModelCodeRefactoringProvider : CodeRefactoringProvider
{
    private const string Title = "Make TransportModel class";

    public override sealed async Task ComputeRefactoringsAsync(CodeRefactoringContext context)
    {
        var root = await context.Document.GetSyntaxRootAsync(context.CancellationToken).ConfigureAwait(false);
        var node = root.FindNode(context.Span);
        var classDeclaration = node as ClassDeclarationSyntax;
        if (classDeclaration == null)
        {
            // current node is not a class declaration
            return;
        }
        var action = CodeAction.Create(Title, token => MakeTransportModelAsync(context.Document, classDeclaration, token), Title);
        context.RegisterRefactoring(action);
    }

    private async Task<Document> MakeTransportModelAsync(Document document, ClassDeclarationSyntax classDeclaration, CancellationToken cancellationToken)
    {            
        var root = await document.GetSyntaxRootAsync(cancellationToken);
        var newRoot = (CompilationUnitSyntax)root;
        var newName = classDeclaration.Identifier + "TransportModel";
        var newId = SyntaxFactory.Identifier(classDeclaration.Identifier.LeadingTrivia, SyntaxKind.IdentifierToken, newName, newName, classDeclaration.Identifier.TrailingTrivia);
        var newClass = classDeclaration.ReplaceToken(classDeclaration.Identifier, newId);
        newRoot = newRoot.ReplaceNode(classDeclaration, newClass).NormalizeWhitespace();
        var result = document.WithSyntaxRoot(newRoot);
        return result;            
    }
}

我发现CodeAction.Create的过载接受Task<Solution>，我觉得这很有趣，但后来我不知道如何获得当前文档的解决方案和/或项目。

Answer 1

拨打CodeAction.Create的{{3}}，其中有一位代表返回Solution。

然后，您可以根据Solution返回context.Document.Project.Solution，并添加新文档。

CodeRefactoringProvider应该生成新文件

1 个答案: