public static SheetCtx New(Metadata meta, Dictionary <string, object> headerValues, AsyncExprCtx parent)
{
var sc = meta.ctxHdr;
var values = new object[sc.values.Count];
sc.values.CopyTo(values, 0);
var k2n = sc.name2ndx;
values[k2n[HdrCellsRef.name]] = headerValues;
{
var prevRowVals = new OPs.ListOfConst();
for (int i = meta.ctxRow.values.Count; i > 0; i--)
{
prevRowVals.Add(null);
}
// imitate empty zero row
prevRowVals[iRowVals] = new Dictionary <string, object>();
values[k2n[PrevValsRef.name]] = prevRowVals;
}
// template metadata info context
var aec = new AsyncExprCtx(sc.parent, sc.parent.values, parent);
//
var ctx = new SheetCtx(meta, values, aec);
return(ctx.Condition ? ctx : null);
}
public SheetCtx TryGetSheetCtx(AsyncExprCtx parent, Dictionary <string, object> headerValues, int nHeaderRows)
{
if (nHeaderRows == iHdrMaxUsedRow)
{
return(SheetCtx.New(this, headerValues, parent));
}
if (nHeaderRows > iHdrMaxUsedRow)
{
return(SheetCtx.Empty);
}
else
{
return(null);
}
}
