private static async Task <Solution> GetSolutionWithBaseAddedAsync(
Solution solution,
AnnotatedSymbolMapping symbolMapping,
INamedTypeSymbol newType,
ImmutableArray <ExtractClassMemberAnalysisResult> memberAnalysisResults,
CancellationToken cancellationToken
)
{
var unformattedSolution = solution;
var remainingResults = new List <ExtractClassMemberAnalysisResult>(
memberAnalysisResults
);
foreach (var documentId in symbolMapping.DocumentIdsToSymbolMap.Keys)
{
if (remainingResults.IsEmpty())
{
// All results have been taken care of
break;
}
var document = solution.GetRequiredDocument(documentId);
var currentRoot = await document
.GetRequiredSyntaxRootAsync(cancellationToken)
.ConfigureAwait(false);
var typeDeclaration = currentRoot
.GetAnnotatedNodes(symbolMapping.TypeNodeAnnotation)
.SingleOrDefault();
if (typeDeclaration == null)
{
continue;
}
var syntaxGenerator = SyntaxGenerator.GetGenerator(document);
var typeReference = syntaxGenerator.TypeExpression(newType);
currentRoot = currentRoot.ReplaceNode(
typeDeclaration,
syntaxGenerator.AddBaseType(typeDeclaration, typeReference)
);
unformattedSolution = document.WithSyntaxRoot(currentRoot).Project.Solution;
// Only need to update on declaration of the type
break;
}
return(unformattedSolution);
}
protected override async Task <IEnumerable <CodeActionOperation> > ComputeOperationsAsync(object options, CancellationToken cancellationToken)
{
if (options is ExtractClassOptions extractClassOptions)
{
// Map the symbols we're removing to annotations
// so we can find them easily
var codeGenerator = _document.GetRequiredLanguageService <ICodeGenerationService>();
var symbolMapping = await AnnotatedSymbolMapping.CreateAsync(
extractClassOptions.MemberAnalysisResults.Select(m => m.Member),
_document.Project.Solution,
_selectedTypeDeclarationNode,
cancellationToken).ConfigureAwait(false);
var namespaceService = _document.GetRequiredLanguageService <AbstractExtractInterfaceService>();
// Create the symbol for the new type
var newType = CodeGenerationSymbolFactory.CreateNamedTypeSymbol(
_selectedType.GetAttributes(),
_selectedType.DeclaredAccessibility,
_selectedType.GetSymbolModifiers(),
TypeKind.Class,
extractClassOptions.TypeName,
typeParameters: ExtractTypeHelpers.GetRequiredTypeParametersForMembers(_selectedType, extractClassOptions.MemberAnalysisResults.Select(m => m.Member)));
var containingNamespaceDisplay = namespaceService.GetContainingNamespaceDisplay(
_selectedType,
_document.Project.CompilationOptions);
// Add the new type to the solution. It can go in a new file or
// be added to an existing. The returned document is always the document
// containing the new type
var(updatedDocument, typeAnnotation) = extractClassOptions.SameFile
? await ExtractTypeHelpers.AddTypeToExistingFileAsync(
symbolMapping.AnnotatedSolution.GetRequiredDocument(_document.Id),
newType,
symbolMapping,
_fallbackOptions,
cancellationToken).ConfigureAwait(false)
: await ExtractTypeHelpers.AddTypeToNewFileAsync(
symbolMapping.AnnotatedSolution,
containingNamespaceDisplay,
extractClassOptions.FileName,
_document.Project.Id,
_document.Folders,
newType,
_document,
_fallbackOptions,
cancellationToken).ConfigureAwait(false);
// Update the original type to have the new base
var solutionWithUpdatedOriginalType = await GetSolutionWithBaseAddedAsync(
updatedDocument.Project.Solution,
symbolMapping,
newType,
extractClassOptions.MemberAnalysisResults,
cancellationToken).ConfigureAwait(false);
// After all the changes, make sure we're using the most up to date symbol
// as the destination for pulling members into
var documentWithTypeDeclaration = solutionWithUpdatedOriginalType.GetRequiredDocument(updatedDocument.Id);
var newTypeAfterEdits = await GetNewTypeSymbolAsync(documentWithTypeDeclaration, typeAnnotation, cancellationToken).ConfigureAwait(false);
// Use Members Puller to move the members to the new symbol
var finalSolution = await PullMembersUpAsync(
solutionWithUpdatedOriginalType,
newTypeAfterEdits,
symbolMapping,
extractClassOptions.MemberAnalysisResults,
cancellationToken).ConfigureAwait(false);
return(new[] { new ApplyChangesOperation(finalSolution) });
}
else
{
// If user click cancel button, options will be null and hit this branch
return(SpecializedCollections.EmptyEnumerable <CodeActionOperation>());
}
}
private async Task <Solution> PullMembersUpAsync(
Solution solution,
INamedTypeSymbol newType,
AnnotatedSymbolMapping symbolMapping,
ImmutableArray <ExtractClassMemberAnalysisResult> memberAnalysisResults,
CancellationToken cancellationToken)
{
using var _ = ArrayBuilder <(ISymbol member, bool makeAbstract)> .GetInstance(out var pullMembersBuilder);
using var _1 = ArrayBuilder <ExtractClassMemberAnalysisResult> .GetInstance(memberAnalysisResults.Length, out var remainingResults);
remainingResults.AddRange(memberAnalysisResults);
// For each document in the symbol mappings, we want to find the annotated nodes
// of the members and get the current symbol that represents those after
// any changes we made before members get pulled up into the base class.
// We only need to worry about symbols that are actually being moved, so we track
// the symbols from the member analysis.
foreach (var(documentId, symbols) in symbolMapping.DocumentIdsToSymbolMap)
{
if (remainingResults.Count == 0)
{
// All symbols have been taken care of
break;
}
var document = solution.GetRequiredDocument(documentId);
var syntaxFacts = document.GetRequiredLanguageService <ISyntaxFactsService>();
var semanticModel = await document.GetRequiredSemanticModelAsync(cancellationToken).ConfigureAwait(false);
var root = await document.GetRequiredSyntaxRootAsync(cancellationToken).ConfigureAwait(false);
using var _2 = ArrayBuilder <ExtractClassMemberAnalysisResult> .GetInstance(remainingResults.Count, out var resultsToRemove);
// Out of the remaining members that we need to move, does this
// document contain the definition for that symbol? If so, add it to the builder
// and remove it from the symbols we're looking for
var memberAnalysisForDocumentSymbols = remainingResults.Where(analysis => symbols.Contains(analysis.Member));
foreach (var memberAnalysis in memberAnalysisForDocumentSymbols)
{
var annotation = symbolMapping.SymbolToDeclarationAnnotationMap[memberAnalysis.Member];
var nodeOrToken = root.GetAnnotatedNodesAndTokens(annotation).SingleOrDefault();
var node = nodeOrToken.IsNode
? nodeOrToken.AsNode()
: nodeOrToken.AsToken().Parent;
// If the node is null then the symbol mapping was wrong about
// the document containing the symbol.
RoslynDebug.AssertNotNull(node);
var currentSymbol = semanticModel.GetDeclaredSymbol(node, cancellationToken);
// If currentSymbol is null then no symbol is declared at the node and
// symbol mapping state is not right.
RoslynDebug.AssertNotNull(currentSymbol);
pullMembersBuilder.Add((currentSymbol, memberAnalysis.MakeAbstract));
resultsToRemove.Add(memberAnalysis);
}
// Remove the symbols we found in this document from the list
// that we are looking for
foreach (var resultToRemove in resultsToRemove)
{
remainingResults.Remove(resultToRemove);
}
}
// If we didn't find all of the symbols then something went really wrong
Contract.ThrowIfFalse(remainingResults.Count == 0);
var pullMemberUpOptions = PullMembersUpOptionsBuilder.BuildPullMembersUpOptions(newType, pullMembersBuilder.ToImmutable());
var updatedOriginalDocument = solution.GetRequiredDocument(_document.Id);
return(await MembersPuller.PullMembersUpAsync(updatedOriginalDocument, pullMemberUpOptions, _fallbackOptions, cancellationToken).ConfigureAwait(false));
}