Microsoft.R.Editor.Tree.TextChangeAnalyzer.CheckWhiteSpaceChange C# (CSharp) Method

        private static TextChangeType CheckWhiteSpaceChange(TextChangeContext context, IAstNode node, PositionType positionType) {
            context.ChangedNode = node;

            if (string.IsNullOrWhiteSpace(context.OldText) && string.IsNullOrWhiteSpace(context.NewText)) {
                // In R there is no line continuation so expression may change when user adds or deletes line breaks.
                bool lineBreakSensitive = node is If;
                if (lineBreakSensitive) {
                    string oldLineText = context.OldTextProvider.GetText(new TextRange(context.OldStart, context.OldLength));
                    string newLineText = context.NewTextProvider.GetText(new TextRange(context.NewStart, context.NewLength));

                    if (oldLineText.IndexOfAny(CharExtensions.LineBreakChars) >= 0 || newLineText.IndexOfAny(CharExtensions.LineBreakChars) >= 0) {
                        return TextChangeType.Structure;
                    }
                }

                // Change inside token node is destructive: consider adding space inside an indentifier
                if (!IsChangeDestructiveForChildNodes(node, context.OldRange)) {
                    return TextChangeType.Trivial;
                }
            }

            return TextChangeType.Structure;
        }