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use crate::de::KeyDeserialize;
use crate::keys::Key;
#[cfg(feature = "iterator")]
use crate::{Bound, Bounder};
use crate::{Endian, Prefixer, PrimaryKey};
use std::marker::PhantomData;
#[derive(Clone, Debug, PartialEq, Eq)]
pub struct IntKeyOld<T: Endian> {
pub wrapped: Vec<u8>,
pub data: PhantomData<T>,
}
impl<T: Endian> IntKeyOld<T> {
pub fn new(val: T) -> Self {
IntKeyOld {
wrapped: val.to_be_bytes().into(),
data: PhantomData,
}
}
}
impl<T: Endian> From<T> for IntKeyOld<T> {
fn from(val: T) -> Self {
IntKeyOld::new(val)
}
}
impl<T: Endian> From<Vec<u8>> for IntKeyOld<T> {
fn from(wrap: Vec<u8>) -> Self {
IntKeyOld {
wrapped: wrap,
data: PhantomData,
}
}
}
impl<T: Endian> From<IntKeyOld<T>> for Vec<u8> {
fn from(k: IntKeyOld<T>) -> Vec<u8> {
k.wrapped
}
}
impl<'a, T: Endian + Clone> PrimaryKey<'a> for IntKeyOld<T>
where
IntKeyOld<T>: KeyDeserialize,
{
type Prefix = ();
type SubPrefix = ();
type Suffix = Self;
type SuperSuffix = Self;
fn key(&self) -> Vec<Key> {
self.wrapped.key()
}
}
impl<'a, T: Endian> Prefixer<'a> for IntKeyOld<T> {
fn prefix(&self) -> Vec<Key> {
self.wrapped.prefix()
}
}
#[cfg(feature = "iterator")]
impl<'a, T: Endian> Bounder<'a> for IntKeyOld<T>
where
IntKeyOld<T>: KeyDeserialize,
{
fn inclusive_bound(self) -> Option<Bound<'a, Self>> {
Some(Bound::inclusive(self))
}
fn exclusive_bound(self) -> Option<Bound<'a, Self>> {
Some(Bound::exclusive(self))
}
}
#[cfg(test)]
mod test {
use super::*;
#[test]
fn u64key_old_works() {
let k: IntKeyOld<u64> = 134u64.into();
let path = k.key();
assert_eq!(1, path.len());
assert_eq!(134u64.to_be_bytes(), path[0].as_ref());
}
#[test]
fn i32key_old_works() {
let k: IntKeyOld<i32> = 4242i32.into();
let path = k.key();
assert_eq!(1, path.len());
assert_eq!(4242i32.to_be_bytes(), path[0].as_ref());
let k: IntKeyOld<i32> = IntKeyOld::<i32>::from(-4242i32);
let path = k.key();
assert_eq!(1, path.len());
assert_eq!((-4242i32).to_be_bytes(), path[0].as_ref());
}
}