Using the specialized name in a variable and making comments clear

- Add JSON tags for `AppProperties`, `PivotTableOption` and `PivotTableField` structure

adjust.go

@@ -248,8 +248,8 @@ func (f *File) adjustAutoFilter(ws *xlsxWorksheet, dir adjustDirection, num, off
 }
 
 // adjustAutoFilterHelper provides a function for adjusting auto filter to
-// compare and calculate cell axis by the given adjust direction, operation
-// axis and offset.
+// compare and calculate cell reference by the given adjust direction, operation
+// reference and offset.
 func (f *File) adjustAutoFilterHelper(dir adjustDirection, coordinates []int, num, offset int) []int {
 	if dir == rows {
 		if coordinates[1] >= num {
@@ -314,7 +314,7 @@ func (f *File) adjustMergeCells(ws *xlsxWorksheet, dir adjustDirection, num, off
 }
 
 // adjustMergeCellsHelper provides a function for adjusting merge cells to
-// compare and calculate cell axis by the given pivot, operation axis and
+// compare and calculate cell reference by the given pivot, operation reference and
 // offset.
 func (f *File) adjustMergeCellsHelper(p1, p2, num, offset int) (int, int) {
 	if p2 < p1 {

adjust_test.go

@@ -10,7 +10,7 @@ import (
 
 func TestAdjustMergeCells(t *testing.T) {
 	f := NewFile()
-	// testing adjustAutoFilter with illegal cell coordinates.
+	// testing adjustAutoFilter with illegal cell reference.
 	assert.EqualError(t, f.adjustMergeCells(&xlsxWorksheet{
 		MergeCells: &xlsxMergeCells{
 			Cells: []*xlsxMergeCell{
@@ -283,7 +283,7 @@ func TestAdjustAutoFilter(t *testing.T) {
 			Ref: "A1:A3",
 		},
 	}, rows, 1, -1))
-	// Test adjustAutoFilter with illegal cell coordinates.
+	// Test adjustAutoFilter with illegal cell reference.
 	assert.EqualError(t, f.adjustAutoFilter(&xlsxWorksheet{
 		AutoFilter: &xlsxAutoFilter{
 			Ref: "A:B1",
@@ -335,7 +335,7 @@ func TestAdjustHelper(t *testing.T) {
 	f.Sheet.Store("xl/worksheets/sheet2.xml", &xlsxWorksheet{
 		AutoFilter: &xlsxAutoFilter{Ref: "A1:B"},
 	})
-	// Test adjustHelper with illegal cell coordinates.
+	// Test adjustHelper with illegal cell reference.
 	assert.EqualError(t, f.adjustHelper("Sheet1", rows, 0, 0), newCellNameToCoordinatesError("A", newInvalidCellNameError("A")).Error())
 	assert.EqualError(t, f.adjustHelper("Sheet2", rows, 0, 0), newCellNameToCoordinatesError("B", newInvalidCellNameError("B")).Error())
 	// Test adjustHelper on not exists worksheet.

calc.go

@@ -1408,7 +1408,7 @@ func (f *File) parseReference(ctx *calcContext, sheet, reference string) (arg fo
 		cr := cellRef{}
 		if len(tokens) == 2 { // have a worksheet name
 			cr.Sheet = tokens[0]
-			// cast to cell coordinates
+			// cast to cell reference
 			if cr.Col, cr.Row, err = CellNameToCoordinates(tokens[1]); err != nil {
 				// cast to column
 				if cr.Col, err = ColumnNameToNumber(tokens[1]); err != nil {
@@ -1428,7 +1428,7 @@ func (f *File) parseReference(ctx *calcContext, sheet, reference string) (arg fo
 			refs.PushBack(cr)
 			continue
 		}
-		// cast to cell coordinates
+		// cast to cell reference
 		if cr.Col, cr.Row, err = CellNameToCoordinates(tokens[0]); err != nil {
 			// cast to column
 			if cr.Col, err = ColumnNameToNumber(tokens[0]); err != nil {

calcchain.go

@@ -45,11 +45,11 @@ func (f *File) calcChainWriter() {
 
 // deleteCalcChain provides a function to remove cell reference on the
 // calculation chain.
-func (f *File) deleteCalcChain(index int, axis string) {
+func (f *File) deleteCalcChain(index int, cell string) {
 	calc := f.calcChainReader()
 	if calc != nil {
 		calc.C = xlsxCalcChainCollection(calc.C).Filter(func(c xlsxCalcChainC) bool {
-			return !((c.I == index && c.R == axis) || (c.I == index && axis == "") || (c.I == 0 && c.R == axis))
+			return !((c.I == index && c.R == cell) || (c.I == index && cell == "") || (c.I == 0 && c.R == cell))
 		})
 	}
 	if len(calc.C) == 0 {