private TypeDeclarationSyntax TransformField(FieldTransformationResult fieldTransform, TypeDeclarationSyntax newTypeNode, TypeTransformationResult transformResult,
INamespaceTransformationMetadata namespaceMetadata, SyntaxTrivia memberWhitespace, bool onlyMissingMembers)
{
var fieldNode = newTypeNode.GetAnnotatedNodes(fieldTransform.Annotation)
.OfType <BaseFieldDeclarationSyntax>()
.First();
var transformedNode = TransformField(fieldNode, !onlyMissingMembers, fieldTransform, transformResult, namespaceMetadata);
newTypeNode = transformedNode.Transformed != null
? newTypeNode.ReplaceNode(fieldNode, transformedNode.Transformed)
: newTypeNode.RemoveNodeKeepDirectives(transformedNode.Annotation, memberWhitespace, transformResult.EndOfLineTrivia);
return(newTypeNode);
}
private RootTypeTransformationResult TransformType(ITypeAnalyzationResult rootTypeResult, INamespaceTransformationMetadata namespaceMetadata, bool onlyMissingMembers)
{
var rootTypeNode = rootTypeResult.Node;
var startRootTypeSpan = rootTypeNode.SpanStart;
var rootTransformResult = new RootTypeTransformationResult(rootTypeResult)
{
MemberNames = rootTypeResult.Symbol.MemberNames.ToImmutableHashSet()
};
// We do this here because we want that the root node has span start equal to 0
rootTypeNode = rootTypeNode.WithAdditionalAnnotations(new SyntaxAnnotation(rootTransformResult.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.
// We need to annotate also the ignored types to be later removed
foreach (var typeResult in rootTypeResult.GetSelfAndDescendantsTypes())
{
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);
var leadingWhitespace = typeNode.GetLeadingWhitespace();
TypeTransformationResult transformResult;
if (typeNode == rootTypeNode)
{
transformResult = rootTransformResult;
transformResult.IndentTrivia = typeNode.GetIndent(leadingWhitespace, namespaceMetadata.LeadingWhitespaceTrivia);
}
else
{
transformResult = new TypeTransformationResult(typeResult)
{
MemberNames = typeResult.Symbol.MemberNames.ToImmutableHashSet(),
IndentTrivia = typeNode.GetIndent(leadingWhitespace)
};
rootTypeNode = rootTypeNode.ReplaceNode(typeNode, typeNode.WithAdditionalAnnotations(new SyntaxAnnotation(transformResult.Annotation)));
rootTransformResult.DescendantTransformedTypes.Add(transformResult);
}
transformResult.LeadingWhitespaceTrivia = leadingWhitespace;
transformResult.EndOfLineTrivia = typeNode.GetEndOfLine();
if (typeResult.Conversion == TypeConversion.Ignore)
{
continue; // The ignored type shall be only annotated
}
// TypeReferences can be changes only if we create a new type
if (typeResult.Conversion == TypeConversion.NewType || typeResult.Conversion == TypeConversion.Copy)
{
foreach (var typeReference in typeResult.TypeReferences.Where(o => o.TypeAnalyzationResult.Conversion == TypeConversion.NewType))
{
var reference = typeReference.ReferenceLocation;
var refSpanStart = reference.Location.SourceSpan.Start - startRootTypeSpan;
var refSpanLength = reference.Location.SourceSpan.Length;
var nameNode = rootTypeNode.GetSimpleName(refSpanStart, refSpanLength, typeReference.IsCref);
var transformedNode = new TransformationResult(nameNode)
{
Transformed = nameNode.WithIdentifier(Identifier(nameNode.Identifier.ValueText + "Async").WithTriviaFrom(nameNode.Identifier))
};
transformResult.TransformedNodes.Add(transformedNode);
rootTypeNode = rootTypeNode.ReplaceNode(nameNode, nameNode.WithAdditionalAnnotations(new SyntaxAnnotation(transformedNode.Annotation)));
}
}
foreach (var fieldResult in typeResult.Fields)
{
var fieldSpanStart = fieldResult.Node.SpanStart - startRootTypeSpan;
var fieldSpanLength = fieldResult.Node.Span.Length;
var fieldNode = rootTypeNode.DescendantNodes()
.OfType <BaseFieldDeclarationSyntax>()
.First(o => o.SpanStart == fieldSpanStart && o.Span.Length == fieldSpanLength);
var transformedNode = new FieldTransformationResult(fieldResult);
transformResult.TransformedFields.Add(transformedNode);
rootTypeNode = rootTypeNode.ReplaceNode(fieldNode, fieldNode.WithAdditionalAnnotations(new SyntaxAnnotation(transformedNode.Annotation)));
}
// Annotate and save an empty method transformation result
foreach (var methodResult in typeResult.Methods /*.Where(o => o.Conversion != MethodConversion.Ignore)*/)
{
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);
// Only create the transformation result for the method and transform the method later as the method may change
// (a directive may be added to the method when removing type members)
var transformedNode = new MethodTransformationResult(methodResult);
transformResult.TransformedMethods.Add(transformedNode);
rootTypeNode = rootTypeNode.ReplaceNode(methodNode, methodNode.WithAdditionalAnnotations(new SyntaxAnnotation(transformedNode.Annotation)));
// Annotate all locks inside the method before the transformations begins as will be easier to transform them if needed
foreach (var lockData in methodResult.Locks)
{
var lockSpanStart = lockData.Node.SpanStart - startRootTypeSpan;
var lockSpanLength = lockData.Node.Span.Length;
var lockNode = rootTypeNode.DescendantNodes()
.OfType <LockStatementSyntax>()
.First(o => o.SpanStart == lockSpanStart && o.Span.Length == lockSpanLength);
var lockTransformedNode = new LockTransformationResult(lockData);
transformedNode.TransformedLocks.Add(lockTransformedNode);
rootTypeNode = rootTypeNode.ReplaceNode(lockNode,
lockNode.WithAdditionalAnnotations(new SyntaxAnnotation(lockTransformedNode.Annotation)));
}
}
foreach (var methodResult in typeResult.SpecialMethods)
{
var methodSpanStart = methodResult.GetNode().SpanStart - startRootTypeSpan;
var methodSpanLength = methodResult.GetNode().Span.Length;
var methodNode = rootTypeNode.DescendantNodes()
.OfType <BaseMethodDeclarationSyntax>()
.First(o => o.SpanStart == methodSpanStart && o.Span.Length == methodSpanLength);
var transformedNode = new FunctionTransformationResult(methodResult);
transformResult.TransformedSpecialMethods.Add(transformedNode);
rootTypeNode = rootTypeNode.ReplaceNode(methodNode, methodNode.WithAdditionalAnnotations(new SyntaxAnnotation(transformedNode.Annotation)));
}
foreach (var propertyResult in typeResult.Properties)
{
var spanStart = propertyResult.Node.SpanStart - startRootTypeSpan;
var spanLength = propertyResult.Node.Span.Length;
var node = rootTypeNode.DescendantNodes()
.OfType <PropertyDeclarationSyntax>()
.First(o => o.SpanStart == spanStart && o.Span.Length == spanLength);
var transformedNode = new PropertyTransformationResult(propertyResult);
transformResult.TransformedProperties.Add(transformedNode);
rootTypeNode = rootTypeNode.ReplaceNode(node, node.WithAdditionalAnnotations(new SyntaxAnnotation(transformedNode.Annotation)));
}
}
// Save the orignal node that was only annotated
var originalAnnotatedNode = rootTypeNode;
// Now we can start transforming the type. Start from the bottom in order to preserve replaced nested types
foreach (var transformResult in rootTransformResult.GetSelfAndDescendantTransformedTypes().OrderByDescending(o => o.OriginalNode.SpanStart))
{
var typeResult = transformResult.AnalyzationResult;
// Add partial keyword on the original node if not present
if ((typeResult.Conversion == TypeConversion.Partial || onlyMissingMembers) && !typeResult.IsPartial)
{
if (rootTransformResult.OriginalModified == null)
{
rootTransformResult.OriginalModified = originalAnnotatedNode;
}
var typeNode = rootTransformResult.OriginalModified.GetAnnotatedNodes(transformResult.Annotation).OfType <TypeDeclarationSyntax>().First();
rootTransformResult.OriginalModified = rootTransformResult.OriginalModified.ReplaceNode(typeNode, typeNode.AddPartial());
}
if (typeResult.Conversion == TypeConversion.Ignore ||
(
onlyMissingMembers &&
!typeResult.GetSelfAndDescendantsTypes().SelectMany(o => o.MethodsAndAccessors).Any(o => o.Missing)
))
{
rootTypeNode = rootTypeNode.RemoveNodeKeepDirectives(transformResult.Annotation, transformResult.LeadingWhitespaceTrivia,
transformResult.EndOfLineTrivia);
continue;
}
var memberWhitespace = Whitespace(transformResult.LeadingWhitespaceTrivia.ToFullString() + transformResult.IndentTrivia.ToFullString());
if (typeResult.Conversion == TypeConversion.Partial || onlyMissingMembers)
{
// First we need to remove ignored method
var typeNode = rootTypeNode.GetAnnotatedNodes(transformResult.Annotation).OfType <TypeDeclarationSyntax>().First();
// We need to remove the attributes as they cannot be defined in both partial classes
var newTypeNode = typeNode.AddPartial().WithoutAttributes();
// We need to remove all other members that are not methods, properties or types
newTypeNode = newTypeNode.RemoveMembersKeepDirectives(o =>
!(o is BaseMethodDeclarationSyntax ||
o is TypeDeclarationSyntax ||
o is PropertyDeclarationSyntax ||
o is BaseFieldDeclarationSyntax), memberWhitespace,
transformResult.EndOfLineTrivia);
rootTypeNode = TransformTypeMembers(namespaceMetadata, onlyMissingMembers, transformResult, newTypeNode,
memberWhitespace, rootTypeNode, typeNode);
}
// If the root type has to be a new type then all nested types have to be new types
else if (typeResult.Conversion == TypeConversion.NewType || typeResult.Conversion == TypeConversion.Copy)
{
var typeNode = rootTypeNode.GetAnnotatedNodes(transformResult.Annotation).OfType <TypeDeclarationSyntax>().First();
var identifierToken = typeNode.ChildTokens().First(o => o.IsKind(SyntaxKind.IdentifierToken));
var newTypeNode = typeResult.Conversion == TypeConversion.NewType
? typeNode.ReplaceToken(identifierToken, Identifier(identifierToken.ValueText + "Async").WithTriviaFrom(identifierToken))
: typeNode;
rootTypeNode = TransformTypeMembers(namespaceMetadata, onlyMissingMembers, transformResult, newTypeNode,
memberWhitespace, rootTypeNode, typeNode);
}
}
rootTransformResult.Transformed = rootTypeNode;
return(rootTransformResult);
}
internal FieldTransformationResult TransformField(
BaseFieldDeclarationSyntax fieldNode,
bool canCopy,
FieldTransformationResult result,
ITypeTransformationMetadata typeMetadata,
INamespaceTransformationMetadata namespaceMetadata)
{
var analyzeResult = result.AnalyzationResult;
var startRootSpan = analyzeResult.Node.SpanStart;
// Calculate whitespace method trivias
result.EndOfLineTrivia = fieldNode.GetEndOfLine();
result.LeadingWhitespaceTrivia = fieldNode.GetLeadingWhitespace();
result.IndentTrivia = fieldNode.GetIndent(result.LeadingWhitespaceTrivia, typeMetadata.LeadingWhitespaceTrivia);
if (analyzeResult.Variables.All(o => o.Conversion == FieldVariableConversion.Ignore || o.Conversion == FieldVariableConversion.Copy && !canCopy))
{
return(result);
}
fieldNode = fieldNode.WithAdditionalAnnotations(new SyntaxAnnotation(result.Annotation));
startRootSpan -= fieldNode.SpanStart;
// First we need to annotate nodes that will be modified in order to find them later on.
// We cannot rely on spans after the first modification as they will change
var typeReferencesAnnotations = new List <string>();
foreach (var typeReference in analyzeResult.TypeReferences.Where(o => o.TypeAnalyzationResult.Conversion == TypeConversion.NewType))
{
var reference = typeReference.ReferenceLocation;
var refSpanStart = reference.Location.SourceSpan.Start - startRootSpan;
var nameNode = fieldNode.GetSimpleName(refSpanStart, reference.Location.SourceSpan.Length, typeReference.IsCref);
var annotation = Guid.NewGuid().ToString();
fieldNode = fieldNode.ReplaceNode(nameNode, nameNode.WithAdditionalAnnotations(new SyntaxAnnotation(annotation)));
typeReferencesAnnotations.Add(annotation);
}
foreach (var variableResult in analyzeResult.Variables)
{
var spanStart = variableResult.Node.SpanStart - startRootSpan;
var spanLength = variableResult.Node.Span.Length;
var accessorNode = fieldNode.DescendantNodes()
.First(o => o.SpanStart == spanStart && o.Span.Length == spanLength);
var transformedNode = new FieldVariableTransformationResult(variableResult);
result.TransformedVariables.Add(transformedNode);
fieldNode = fieldNode.ReplaceNode(accessorNode, accessorNode.WithAdditionalAnnotations(new SyntaxAnnotation(transformedNode.Annotation)));
}
// Modify references
foreach (var refAnnotation in typeReferencesAnnotations)
{
var nameNode = fieldNode.GetAnnotatedNodes(refAnnotation).OfType <SimpleNameSyntax>().First();
fieldNode = fieldNode
.ReplaceNode(nameNode, nameNode.WithIdentifier(Identifier(nameNode.Identifier.Value + "Async").WithTriviaFrom(nameNode.Identifier)));
}
foreach (var fieldVariableResult in result.TransformedVariables.OrderByDescending(o => o.OriginalStartSpan))
{
var variableNode = (VariableDeclaratorSyntax)fieldNode.GetAnnotatedNodes(fieldVariableResult.Annotation)
.First();
var variableTransformResult = TransformFieldVariable(variableNode, fieldVariableResult, canCopy);
fieldNode = variableTransformResult.Transformed == null
? fieldNode.RemoveNode(variableNode, SyntaxRemoveOptions.KeepUnbalancedDirectives)
: fieldNode.ReplaceNode(variableNode, variableTransformResult.Transformed);
}
result.Transformed = fieldNode;
return(result);
}