internal static CompilationUnitSyntax ImplementINotifyPropertyChanged(CompilationUnitSyntax root, SemanticModel model, IEnumerable<ExpandablePropertyInfo> properties, Workspace workspace)
{
var typeDeclaration = properties.First().PropertyDeclaration.FirstAncestorOrSelf<TypeDeclarationSyntax>();
var backingFieldLookup = Enumerable.ToDictionary(properties, info => info.PropertyDeclaration, info => info.BackingFieldName);
root = root.ReplaceNodes(properties.Select(p => p.PropertyDeclaration as SyntaxNode).Concat(new[] { typeDeclaration }),
(original, updated) => original.IsKind(SyntaxKind.PropertyDeclaration)
? ExpandProperty((PropertyDeclarationSyntax)original, backingFieldLookup[(PropertyDeclarationSyntax)original]) as SyntaxNode
: ExpandType((TypeDeclarationSyntax)original, (TypeDeclarationSyntax)updated, properties.Where(p => p.NeedsBackingField), model, workspace));
return root
.WithUsing("System.Collections.Generic")
.WithUsing("System.ComponentModel");
}
