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use crate::*;
use crate::serialization::utils::is_break_tag;

impl cbor_event::se::Serialize for Costmdls {
    fn serialize<'se, W: Write>(
        &self,
        serializer: &'se mut Serializer<W>,
    ) -> cbor_event::Result<&'se mut Serializer<W>> {
        serializer.write_map(cbor_event::Len::Len(self.0.len() as u64))?;
        for (key, value) in &self.0 {
            key.serialize(serializer)?;
            value.serialize(serializer)?;
        }
        Ok(serializer)
    }
}

impl Deserialize for Costmdls {
    fn deserialize<R: BufRead + Seek>(raw: &mut Deserializer<R>) -> Result<Self, DeserializeError> {
        let mut table = std::collections::BTreeMap::new();
        (|| -> Result<_, DeserializeError> {
            let len = raw.map()?;
            while match len {
                cbor_event::Len::Len(n) => table.len() < n as usize,
                cbor_event::Len::Indefinite => true,
            } {
                if is_break_tag(raw, "Costmdls")? {
                    break;
                }
                let key = Language::deserialize(raw)?;
                let value = CostModel::deserialize(raw)?;
                if table.insert(key.clone(), value).is_some() {
                    return Err(DeserializeFailure::DuplicateKey(Key::Str(String::from(
                        "some complicated/unsupported type",
                    )))
                        .into());
                }
            }
            Ok(())
        })()
            .map_err(|e| e.annotate("Costmdls"))?;
        Ok(Self(table))
    }
}