private static TypeDeclarationSyntax AddBackingField(this DocumentEditor editor, TypeDeclarationSyntax type, FieldDeclarationSyntax backingField, string propertyName)
{
if (type.TryFindProperty(propertyName, out var property))
{
if (editor.SemanticModel.BackingFieldsAdjacent(out var newLine) == CodeStyleResult.Yes)
{
if (newLine ||
!property.GetLeadingTrivia().Any(SyntaxKind.EndOfLineTrivia))
{
return(type.InsertNodesBefore(property, new[] { backingField }));
}
return(type.InsertNodesBefore(property, new[] { backingField.WithTrailingTrivia(null) }));
}
var index = type.Members.IndexOf(property);
for (var i = index + 1; i < type.Members.Count; i++)
{
if (type.Members[i] is PropertyDeclarationSyntax other)
{
if (other.TryGetBackingField(out var otherField))
{
return(type.InsertNodesBefore(otherField, new[] { backingField }));
}
}
else
{
break;
}
}
for (var i = index - 1; i >= 0; i--)
{
if (type.Members[i] is PropertyDeclarationSyntax other)
{
if (other.TryGetBackingField(out var otherField))
{
return(type.InsertNodesAfter(otherField, new[] { backingField }));
}
}
else
{
break;
}
}
}
return(type.AddField(backingField));
}
