public override Query VisitFieldExpression(CalcParser.FieldExpressionContext context)
{
Query fieldQuery = Visit(context.expression());
string fieldName = fieldQuery.Text;
FieldInfo fieldInfo = this._metadataResolver.GetField(fieldName);
ResultType type = ResultType.Number;
string queryText;
if (fieldInfo.Type != DFM_FIELD_TYPE.DFM_FT_STRING && fieldInfo.Type != DFM_FIELD_TYPE.DFM_FT_MEMO)
{
if (fieldInfo.Type == DFM_FIELD_TYPE.DFM_FT_DATE)
{
type = ResultType.Date;
}
queryText = "X" + fieldInfo.Name;
}
else
{
queryText = this._dbTranslator.FieldToInt(fieldInfo);
}
return(new Query(queryText, type));
}
public override Argument VisitFieldExpression(CalcParser.FieldExpressionContext context)
{
Argument arg = Visit(context.expression());
if (arg.IsNull)
{
return(Argument.Null);
}
if (arg.IsDouble || arg.IsDate)
{
throw new ArgumentCastException("Argument of $FIELD macro should not be a number or a date");
}
string fieldName = arg.ToString();
return(this._resolver.ResolveFieldValue(fieldName));
}