Clean shared formula cell cache on remove formula and simplify adjust formula reference code

Author: xuri

adjust.go

@@ -416,48 +416,30 @@ func (f *File) adjustFormulaOperand(sheet, sheetN string, keepRelative bool, tok
 // adjustFormulaRef returns adjusted formula by giving adjusting direction and
 // the base number of column or row, and offset.
 func (f *File) adjustFormulaRef(sheet, sheetN, formula string, keepRelative bool, dir adjustDirection, num, offset int) (string, error) {
-	var (
-		val          string
-		definedNames []string
-		ps           = efp.ExcelParser()
-	)
+	var definedNames []string
 	for _, definedName := range f.GetDefinedName() {
 		if definedName.Scope == "Workbook" || definedName.Scope == sheet {
 			definedNames = append(definedNames, definedName.Name)
 		}
 	}
-	for _, token := range ps.Parse(formula) {
+	ps := efp.ExcelParser()
+	tokens := ps.Parse(formula)
+	for i, token := range tokens {
 		if token.TType == efp.TokenTypeUnknown {
-			val = formula
-			break
+			return formula, nil
 		}
 		if token.TType == efp.TokenTypeOperand && token.TSubType == efp.TokenSubTypeRange {
-			if inStrSlice(definedNames, token.TValue, true) != -1 {
-				val += token.TValue
-				continue
-			}
-			if strings.ContainsAny(token.TValue, "[]") {
-				val += token.TValue
+			if inStrSlice(definedNames, token.TValue, true) != -1 || strings.ContainsAny(token.TValue, "[]") {
 				continue
 			}
 			operand, err := f.adjustFormulaOperand(sheet, sheetN, keepRelative, token, dir, num, offset)
 			if err != nil {
-				return val, err
+				return ps.Render(), err
 			}
-			val += operand
-			continue
+			tokens[i].TValue = operand
 		}
-		if paren := transformParenthesesToken(token); paren != "" {
-			val += transformParenthesesToken(token)
-			continue
-		}
-		if token.TType == efp.TokenTypeOperand && token.TSubType == efp.TokenSubTypeText {
-			val += string(efp.QuoteDouble) + strings.ReplaceAll(token.TValue, "\"", "\"\"") + string(efp.QuoteDouble)
-			continue
-		}
-		val += token.TValue
 	}
-	return val, nil
+	return ps.Render(), nil
 }
 
 // transformParenthesesToken returns formula part with parentheses by given

cell.go

@@ -189,6 +189,7 @@ func (f *File) removeFormula(c *xlsxC, ws *xlsxWorksheet, sheet string) error {
 		}
 		if c.F.T == STCellFormulaTypeShared && c.F.Ref != "" {
 			si := c.F.Si
+			ws.deleteSharedFormula(c)
 			for r, row := range ws.SheetData.Row {
 				for col, cell := range row.C {
 					if cell.F != nil && cell.F.Si != nil && *cell.F.Si == *si {