JetBrains.ReSharper.Psi.Secret.Formatter.SecretFormatterHelper.MakeIndent C# (CSharp) Method

        public static void MakeIndent(this ITreeNode indentNode, string indent)
        {
            var lastSpace = indentNode.PrevSibling as IWhitespaceNode;
            if (lastSpace != null && lastSpace.GetTokenType() != NTriplesTokenType.NEW_LINE)
            {
                ITreeNode firstSpace =
                    lastSpace.LeftWhitespaces().TakeWhile(ws => ws.GetTokenType() != NTriplesTokenType.NEW_LINE).LastOrDefault() ??
                    lastSpace;
                Debug.Assert(firstSpace != null, "firstSpace != null");
                if (firstSpace != lastSpace)
                {
                    while ((firstSpace != null) && (firstSpace.GetTokenType() != NTriplesTokenType.NEW_LINE) &&
                           (firstSpace.GetNextToken() != lastSpace))
                    {
                        firstSpace = firstSpace.GetNextToken();
                    }
                    firstSpace = firstSpace.GetNextToken();
                }
                if (firstSpace != null)
                {
                    if ((firstSpace != lastSpace || lastSpace.GetText() != indent) && (firstSpace.Parent == lastSpace.Parent))
                    {
                        if (indent.IsEmpty())
                        {
                            LowLevelModificationUtil.DeleteChildRange(firstSpace, lastSpace);
                        }
                        else
                        {
                            LowLevelModificationUtil.ReplaceChildRange(firstSpace, lastSpace, CreateSpace(indent));
                        }
                    }
                }
            }
            else if (!indent.IsEmpty())
            {
                LowLevelModificationUtil.AddChildBefore(indentNode, CreateSpace(indent));
            }
        }