Function decode_default_with_codec_and_limits 

pub fn decode_default_with_codec_and_limits(
    cx: &mut Cx,
    symbol: &Symbol,
    input: Input,
    read_policy: ReadPolicy,
    position: DecodePosition,
    limits: DecodeLimits,
) -> Result<DecodedForm>

Position-aware decode under explicit DecodeLimits; see decode_default_with_codec.