public static object LookupHelperFuncs(CallExpr ce, Generator.Ctx ctx)
{
var dbConn = ce.args[0];
var dbConnName = OPs.TryAsName(dbConn, ctx);
if (dbConnName == null)
{
throw new Generator.Exception($"Can't get DB connection name: {dbConn}");
}
var pairs = ctx.GetConstant(ce.args[1]) as IList;
if (pairs == null)
{
throw new Generator.Exception($"Can't interpet as array of constants: {ce.args[1]}");
}
if (pairs.Count % 2 != 0)
{
throw new Generator.Exception($"Items count must be even (cause it must be array of pairs): {ce.args[1]}");
}
var location = Convert.ToString(ctx.GetConstant(ce.args[2]));
var defs = new List <FuncDef>(pairs.Count / 2);
for (int i = 0; i < pairs.Count; i += 2)
{
var dbTableName = pairs[i].ToString();
var substance = pairs[i + 1].ToString();
// Dictionary loader func
defs.Add(FuncDefs_Core.macroFuncImpl(ctx,
// name
new ConstExpr($"{dbConnName}:{dbTableName}_LoadDict"),
// inputs
new ArrayExpr(),
// outputs
new ArrayExpr(new ConstExpr($"{substance}_DICT_{location}")),
// body
new CallExpr(LoadCodeLookupDictRows, dbConn, new ConstExpr(dbTableName)),
//
null, false
));
}
return(defs);
}
public static object COLUMN(CallExpr ce, Generator.Ctx ctx)
{
var cellName = OPs.TryAsName(ce.args[0], ctx);
if (cellName == null)
{
throw new Generator.Exception($"COLUMN(cellName): can't get cell name from expession // {ce.args[0]}");
}
int i = 0;
if (CellRange.ParseCellName(cellName, ref i, cellName.Length, out int row, out int col))
{
return(col);
}
throw new Generator.Exception($"COLUMN(cellName): can't parse given cell name // {cellName}");
}
Expr SpecFuncs(CallExpr ce)
{
Expr src, ndx;
bool forPrev = false, forCell = false;
int nMinArgs = 1;
switch (ce.funcName)
{
case "PREVCELL":
forCell = true; forPrev = true; break;
case "PREV":
nMinArgs = 0; forPrev = true; break;
case "INDIRECT":
forCell = true; break;
case nameof(FuncDefs_Xlsx.COLUMN):
// avoid COLUMN(args) fixing
return(new CallExpr(nameof(FuncDefs_Xlsx.COLUMN), ce.args));
default:
return(ce);
}
if (ce.args.Count < nMinArgs)
{
return(ce);
}
Expr arg;
string name;
if (ce.args.Count == 0)
{
arg = null;
name = FCurrName;
}
else
{
arg = ce.args[0];
if (arg.nodeType == ExprType.Reference)
{
name = ((ReferenceExpr)arg).name;
if (IsColumnName(name) || !forPrev && IsFullRelativeCell(CellRange.FromName(name)))
{
forCell = true;
}
else
{
name = OPs.TryAsString(arg, ctxRow) ?? name;
}
}
else
{
arg = FixRowExpr(arg);
name = OPs.TryAsName(arg, ctxRow);
}
}
if (name == null)
{
var undefs = string.Join(", ", ctxHdr.NamesOfUndefinedValues().Concat(ctxRow.NamesOfUndefinedValues()));
throw new Source.Exception($"Constant expected as value of {ce.args[0]}={arg} // ??? {undefs}");
}
if (forCell || IsColumnName(name) || !forPrev && IsFullRelativeCell(CellRange.FromName(name)))
{
if (forPrev)
{
src = new IndexExpr(PrevValsRef, new ConstExpr(ctxRow.IndexOf(CellValsRef.name)));
}
else
{
var re1 = new ReferenceExpr(name);
var re2 = FixHdrCellRef(re1);
if (re2 != re1)
{
// ref to header cell
return(re2);
}
else
{
// ref to row cell
src = CellValsRef;
}
}
ndx = new ConstExpr(name);
}
else
{
int i = ctxRow.IndexOf(name);
if (i < 0 || Generator.Ctx.ctxDepthStep <= i)
{
throw new Source.Exception($"Value named '{name}' not found in row context");
}
src = PrevValsRef;
ndx = new ConstExpr(i);
}
return(new IndexExpr(src, ndx));
}
