// TODO: Missing members
private TypeTransformationResult TransformType(ITypeAnalyzationResult rootTypeResult)
{
var rootTypeNode = rootTypeResult.Node;
var startRootTypeSpan = rootTypeNode.SpanStart;
var typeResultMetadatas = new Dictionary <ITypeAnalyzationResult, TypeTransformationMetadata>();
var rootMetadata = new TypeTransformationMetadata
{
ReservedFieldNames = new HashSet <string>(rootTypeResult.Symbol.MemberNames)
};
// We do this here because we want that the root node has span start equal to 0
rootTypeNode = rootTypeNode.WithAdditionalAnnotations(new SyntaxAnnotation(rootMetadata.Annotation));
startRootTypeSpan -= rootTypeNode.SpanStart;
// Before any modification we need to annotate nodes that will be transformed in order to find them later on.
// We cannot rely on spans as they changes each time the node is modified.
foreach (var typeResult in rootTypeResult.GetSelfAndDescendantsTypes(o => o.Conversion != TypeConversion.Ignore))
{
var typeSpanStart = typeResult.Node.SpanStart - startRootTypeSpan;
var typeSpanLength = typeResult.Node.Span.Length;
var typeNode = rootTypeNode.DescendantNodesAndSelf().OfType <TypeDeclarationSyntax>()
.First(o => o.SpanStart == typeSpanStart && o.Span.Length == typeSpanLength);
TypeTransformationMetadata metadata;
if (typeNode == rootTypeNode)
{
metadata = rootMetadata;
}
else
{
metadata = new TypeTransformationMetadata
{
ReservedFieldNames = new HashSet <string>(typeResult.Symbol.MemberNames)
};
rootTypeNode = rootTypeNode.ReplaceNode(typeNode, typeNode.WithAdditionalAnnotations(new SyntaxAnnotation(metadata.Annotation)));
}
// TypeReferences can be changes only if we create a new type
if (rootTypeResult.Conversion == TypeConversion.NewType)
{
foreach (var typeReference in typeResult.TypeReferences)
{
var reference = typeReference.ReferenceLocation;
var refSpanStart = reference.Location.SourceSpan.Start - startRootTypeSpan;
var refSpanLength = reference.Location.SourceSpan.Length;
if (refSpanStart < 0)
{
// TODO: cref
//var startSpan = reference.Location.SourceSpan.Start - rootTypeInfo.Node.GetLeadingTrivia().Span.Start;
//var crefNode = leadingTrivia.First(o => o.SpanStart == startSpan && o.Span.Length == refSpanLength);
continue;
}
var nameNode = rootTypeNode.GetSimpleName(refSpanStart, refSpanLength);
var transformedNode = new TransformationResult(nameNode)
{
TransformedNode = nameNode.WithIdentifier(Identifier(nameNode.Identifier.ValueText + "Async"))
};
metadata.TransformedNodes.Add(transformedNode);
rootTypeNode = rootTypeNode.ReplaceNode(nameNode, nameNode.WithAdditionalAnnotations(new SyntaxAnnotation(transformedNode.Annotation)));
}
}
// Annotate and save the transformed methods
foreach (var methodResult in typeResult.Methods)
{
var methodSpanStart = methodResult.Node.SpanStart - startRootTypeSpan;
var methodSpanLength = methodResult.Node.Span.Length;
var methodNode = rootTypeNode.DescendantNodes()
.OfType <MethodDeclarationSyntax>()
.First(o => o.SpanStart == methodSpanStart && o.Span.Length == methodSpanLength);
var transformedNode = TransformMethod(metadata, methodResult);
metadata.TransformedMethods.Add(transformedNode);
rootTypeNode = rootTypeNode.ReplaceNode(methodNode, methodNode.WithAdditionalAnnotations(new SyntaxAnnotation(transformedNode.Annotation)));
}
typeResultMetadatas.Add(typeResult, metadata);
}
// Save the orignal node that was only annotated
var result = new TypeTransformationResult(rootTypeNode);
// Now we can start transforming the type. Start from the bottom in order to preserve replaced nested types
foreach (var typeResult in rootTypeResult.GetSelfAndDescendantsTypes(o => o.Conversion != TypeConversion.Ignore)
.OrderByDescending(o => o.Node.SpanStart))
{
var metadata = typeResultMetadatas[typeResult];
// Add partial keyword on the original node if not present
if (typeResult.Conversion == TypeConversion.Partial && !typeResult.IsPartial)
{
var typeNode = rootTypeNode.GetAnnotatedNodes(metadata.Annotation).OfType <TypeDeclarationSyntax>().First();
result.OriginalModifiedNode = result.Node.ReplaceNode(typeNode, typeNode.AddPartial());
}
// If the root type has to be a new type then all nested types have to be new types
if (typeResult.Conversion == TypeConversion.NewType)
{
// Replace all rewritten nodes
foreach (var rewNode in metadata.TransformedNodes)
{
var node = rootTypeNode.GetAnnotatedNodes(rewNode.Annotation).First();
if (rewNode.TransformedNode == null)
{
//TODO: fix regions
rootTypeNode = rootTypeNode.RemoveNode(node, SyntaxRemoveOptions.KeepNoTrivia);
}
else
{
rootTypeNode = rootTypeNode.ReplaceNode(node, rewNode.TransformedNode);
}
}
}
else if (typeResult.Conversion == TypeConversion.Partial)
{
var typeNode = rootTypeNode.GetAnnotatedNodes(metadata.Annotation).OfType <TypeDeclarationSyntax>().First();
var newNodes = metadata.TransformedNodes
.Union(metadata.TransformedMethods)
.Where(o => o.TransformedNode != null)
.OrderBy(o => o.Node.SpanStart)
.Select(o => o.TransformedNode)
.Union(typeNode.DescendantNodes().OfType <TypeDeclarationSyntax>())
.ToList();
if (!newNodes.Any())
{
//TODO: fix regions
rootTypeNode = rootTypeNode.RemoveNode(typeNode, SyntaxRemoveOptions.KeepNoTrivia);
}
else
{
// We need to remove the attributes as they cannot be defined in both partial classes
var newTypeNode = typeNode.AddPartial().WithoutAttributes();
// Add fields for async lock if any. We need a lock field for each synchronized method
foreach (var methodTransform in metadata.TransformedMethods.Where(o => o.AsyncLockField != null).OrderBy(o => o.Node.SpanStart))
{
newNodes.Insert(0, methodTransform.AsyncLockField);
}
newTypeNode = newTypeNode.WithMembers(List(newNodes));
//TODO: fix regions
rootTypeNode = rootTypeNode.ReplaceNode(typeNode, newTypeNode /*.RemoveLeadingDirectives()*/);
}
}
}
result.TransformedNode = rootTypeNode;
return(result);
}
private DocumentTransformationResult TransformDocument(IDocumentAnalyzationResult documentResult)
{
var rootNode = documentResult.Node;
var result = new DocumentTransformationResult(rootNode);
var rewrittenNodes = new List <TransformationResult>();
var namespaceNodes = new List <MemberDeclarationSyntax>();
var hasTaskUsing = rootNode.Usings.Any(o => o.Name.ToString() == "System.Threading.Tasks");
foreach (var namespaceResult in documentResult.Namespaces.OrderBy(o => o.Node.SpanStart))
{
var namespaceNode = namespaceResult.Node;
var typeNodes = new List <MemberDeclarationSyntax>();
foreach (var typeResult in namespaceResult.Types.Where(o => o.Conversion != TypeConversion.Ignore).OrderBy(o => o.Node.SpanStart))
{
var transformResult = TransformType(typeResult);
if (transformResult.TransformedNode == null)
{
continue;
}
typeNodes.Add(transformResult.TransformedNode);
// We need to update the original file if it was modified
if (transformResult.OriginalModifiedNode != null)
{
var typeSpanStart = typeResult.Node.SpanStart;
var typeSpanLength = typeResult.Node.Span.Length;
var typeNode = rootNode.DescendantNodesAndSelf().OfType <TypeDeclarationSyntax>()
.First(o => o.SpanStart == typeSpanStart && o.Span.Length == typeSpanLength);
var rewritenNode = new TransformationResult(typeNode)
{
TransformedNode = transformResult.OriginalModifiedNode
};
rootNode = rootNode.ReplaceNode(typeNode, typeNode.WithAdditionalAnnotations(new SyntaxAnnotation(rewritenNode.Annotation)));
rewrittenNodes.Add(rewritenNode);
}
// TODO: missing members
//if (typeInfo.TypeTransformation == TypeTransformation.NewType && typeInfo.HasMissingMembers)
//{
// transformResult = TransformType(typeInfo, true);
// if (transformResult.Node == null)
// {
// continue;
// }
// typeNodes.Add(transformResult.Node);
//}
}
if (typeNodes.Any())
{
var leadingTrivia = namespaceResult.Types.First().Node.GetFirstToken().LeadingTrivia.First(o => o.IsKind(SyntaxKind.WhitespaceTrivia));
//TODO: check if Task is conflicted inside namespace
if (!hasTaskUsing && namespaceNode.Usings.All(o => o.Name.ToString() != "System.Threading.Tasks"))
{
namespaceNode = namespaceNode.AddUsing("System.Threading.Tasks", TriviaList(leadingTrivia));
}
// TODO: add locking namespaces
namespaceNodes.Add(namespaceNode
.WithMembers(List(typeNodes)));
}
}
if (!namespaceNodes.Any())
{
return(result);
}
// Update the original node
var origRootNode = rootNode;
foreach (var rewrittenNode in rewrittenNodes)
{
origRootNode = rootNode.ReplaceNode(rootNode.GetAnnotatedNodes(rewrittenNode.Annotation).First(), rewrittenNode.TransformedNode);
}
if (rootNode != origRootNode)
{
result.OriginalModifiedNode = origRootNode;
}
// Create the new node
rootNode = rootNode
.WithMembers(List(namespaceNodes));
// Add auto-generated comment
var token = rootNode.DescendantTokens().First();
rootNode = rootNode.ReplaceToken(token, token.AddAutoGeneratedTrivia());
result.TransformedNode = rootNode;
return(result);
}
