/// <summary>
/// Translate a fornula due to a sheet change, e.g. insertion of rows.
/// </summary>
/// <param name="formula">Formula, e.g. SUM(A1,Sheet2!B2)</param>
/// <param name="sheetChange">Details of change</param>
/// <param name="currentSheetName">The sheet where the range is, to determine if this range is affected. If sheetChange.SheetName is null and currentSheetName is null, translation is always applied.</param>
/// <param name="currentSheetName">The sheet where the range is, to determine if this range is affected. If sheetChange.SheetName is null and currentSheetName is null, translation is always applied.</param>
/// <returns></returns>
public static string TranslateForSheetChange(string formula, SheetChange sheetChange, string currentSheetName)
{
if (formula == null)
{
return(null);
}
ParseTree tree = ExcelFormula.Parse(formula);
StringBuilder rebuilt = new StringBuilder();
if (tree.Errors.Count > 0)
{
throw new ArgumentException("Error in parsing formula");
}
BuildTranslated(rebuilt, tree,
n => TranslateRangeParseNodeForSheetChange(n, sheetChange, currentSheetName));
return(rebuilt.ToString());
}
/// <summary>
/// Translate a formula.
/// </summary>
/// <param name="formula">Formula, e.g. SUM(A1,Sheet2!B2)</param>
/// <param name="rowDelta">Number of rows to move up(+) or down(-)</param>
/// <param name="colDelta">Number of columns to move right(+) or left(-)</param>
/// <returns></returns>
public static string Translate(string formula, int rowDelta, int colDelta)
{
if (formula == null)
{
return(null);
}
ParseTree tree = ExcelFormula.Parse(formula);
StringBuilder rebuilt = new StringBuilder();
if (tree.Errors.Count > 0)
{
throw new ArgumentException("Error in parsing formula");
}
BuildTranslated(rebuilt, tree,
n => TranslateRangeParseNodeWithOffset(n, rowDelta, colDelta));
return(rebuilt.ToString());
}