pub mod codec;
pub mod constants;
pub mod de;
pub mod decoder;
pub mod encoder;
pub mod error;
pub mod ser;
pub mod value;

pub use codec::Codec;
pub use de::Deserializer;
pub use de::from_value;
pub use decoder::DecodePlaceholderMap;
pub use decoder::Decoder;
pub use encoder::EncodePlaceholderMap;
pub use encoder::Encoder;
pub use ser::Serializer;
pub use ser::to_value;
pub use value::AValue;
pub use value::Dictionary;
pub use value::Set;
pub use value::Value;

pub fn invert_map<A, B>(m: &std::collections::BTreeMap<A, B>) -> std::collections::BTreeMap<B, A>
    where A: Clone, B: Clone + Ord
{
    use std::iter::FromIterator;
    std::collections::BTreeMap::from_iter(m.iter().map(|(a, b)| (b.clone(), a.clone())))
}