// AtIndex gets the value at the given index
func (r *CSVRecord) AtIndex(index int) (*ch.Const, error) {
if index < 0 || index > len(r.record) {
return nil, fmt.Errorf("index out of bounds %d", index)
}
// FIXME should we accept NULL values?
value := r.record[index]
if value == "NULL" {
return ch.NullConst(), nil
}
return ch.ConstFromString(value), nil
}
func jsonToConst(partial *json.RawMessage) (*ch.Const, error) {
var value string
if partial == nil {
return ch.NullConst(), nil
}
asString := string(*partial)
if asString == "null" {
return ch.NullConst(), nil
}
if err := json.Unmarshal(*partial, &value); err != nil {
if err, ok := err.(*json.UnmarshalTypeError); ok {
// we failed to unmarshal into a string, let's try the other types
switch err.Value {
case "number":
var n json.Number
if err := json.Unmarshal(*partial, &n); err != nil {
return nil, err
}
value = n.String()
case "bool":
value = asString
default:
return nil, err
}
}
}
return ch.ConstFromString(value), nil
}