Function asn_codecs::aper::decode::decode_choice_idx

pub fn decode_choice_idx(
    data: &mut AperCodecData, 
    lb: i128, 
    ub: i128, 
    is_extensible: bool
) -> Result<(i128, bool), AperCodecError>

Decode a Choice Index.

For an ASN.1 CHOICE Type, a CHOICE Index is first decoded. This function is used to decode the choice index. Returns the Index in the ‘root’ or ‘additions’ and a flag indicated whether the value is from the ‘root_extensions’ or ‘addtions’. The caller would then decide the appropriate decode function for the CHOICE variant is called.