cassandra-protocol 4.0.0

Cassandra protocol implementation
Documentation 
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use std::collections::HashMap;
use std::net::IpAddr;
use std::num::{NonZeroI16, NonZeroI32, NonZeroI64, NonZeroI8};

use chrono::prelude::*;
use time::PrimitiveDateTime;
use uuid::Uuid;

use crate::error::{column_is_empty_err, Error, Result};
use crate::frame::message_result::{CUdt, ColType, ColTypeOption, ColTypeOptionValue};
use crate::frame::Version;
use crate::types::blob::Blob;
use crate::types::data_serialization_types::*;
use crate::types::decimal::Decimal;
use crate::types::list::List;
use crate::types::map::Map;
use crate::types::tuple::Tuple;
use crate::types::{ByName, CBytes, IntoRustByName};
use num_bigint::BigInt;

#[derive(Clone, Debug)]
pub struct Udt {
    data: HashMap<String, (ColTypeOption, CBytes)>,
    protocol_version: Version,
}

impl Udt {
    pub fn new(fields: Vec<CBytes>, metadata: &CUdt, protocol_version: Version) -> Udt {
        let mut data: HashMap<String, (ColTypeOption, CBytes)> =
            HashMap::with_capacity(metadata.descriptions.len());

        for ((name, val_type), val_b) in metadata.descriptions.iter().zip(fields.into_iter()) {
            data.insert(name.clone(), (val_type.clone(), val_b));
        }
        Udt {
            data,
            protocol_version,
        }
    }
}

impl ByName for Udt {}

into_rust_by_name!(Udt, Blob);
into_rust_by_name!(Udt, String);
into_rust_by_name!(Udt, bool);
into_rust_by_name!(Udt, i64);
into_rust_by_name!(Udt, i32);
into_rust_by_name!(Udt, i16);
into_rust_by_name!(Udt, i8);
into_rust_by_name!(Udt, f64);
into_rust_by_name!(Udt, f32);
into_rust_by_name!(Udt, IpAddr);
into_rust_by_name!(Udt, Uuid);
into_rust_by_name!(Udt, List);
into_rust_by_name!(Udt, Map);
into_rust_by_name!(Udt, Udt);
into_rust_by_name!(Udt, Tuple);
into_rust_by_name!(Udt, PrimitiveDateTime);
into_rust_by_name!(Udt, Decimal);
into_rust_by_name!(Udt, NonZeroI8);
into_rust_by_name!(Udt, NonZeroI16);
into_rust_by_name!(Udt, NonZeroI32);
into_rust_by_name!(Udt, NonZeroI64);
into_rust_by_name!(Udt, NaiveDateTime);
into_rust_by_name!(Udt, DateTime<Utc>);
into_rust_by_name!(Udt, BigInt);

udt_as_cassandra_type!();