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use std::convert::TryFrom;
use serde::{Deserialize, Serialize};
use crate::error::{Error, ErrorKind};
#[derive(Copy, Clone, Debug, Deserialize, Serialize)]
#[serde(rename_all = "lowercase")]
pub enum MemoryUnit {
Byte,
Kilobyte,
Megabyte,
Gigabyte,
}
impl MemoryUnit {
pub fn as_bytes(self, value: u64) -> u64 {
use MemoryUnit::*;
match self {
Byte => value,
Kilobyte => value << 10,
Megabyte => value << 20,
Gigabyte => value << 30,
}
}
}
impl TryFrom<i32> for MemoryUnit {
type Error = Error;
fn try_from(value: i32) -> Result<MemoryUnit, Self::Error> {
match value {
0 => Ok(MemoryUnit::Byte),
1 => Ok(MemoryUnit::Kilobyte),
2 => Ok(MemoryUnit::Megabyte),
3 => Ok(MemoryUnit::Gigabyte),
e => Err(ErrorKind::MemoryUnit(e).into()),
}
}
}