ewe_mem 0.0.1

Low-level memory management utilities that implement a poor man allocator wrappers
Documentation 
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use std::borrow::Cow;
use std::{rc, str};

pub trait Encoder {
    fn encode<'a>(&self, text: &'a str) -> Cow<'a, [u8]>;
}

pub trait Decoder {
    fn decode<'a>(&self, text: &'a [u8]) -> &'a str;
}

pub type SharedEncoding = rc::Rc<dyn Encoding>;

pub trait Encoding: Encoder + Decoder {}

pub struct UTF8Encoding;

impl UTF8Encoding {
    pub fn shared() -> SharedEncoding {
        rc::Rc::new(Self)
    }

    pub fn new() -> Self {
        Self {}
    }
}

impl Encoding for UTF8Encoding {}

impl Default for UTF8Encoding {
    fn default() -> Self {
        Self {}
    }
}

impl Encoder for UTF8Encoding {
    fn encode<'a>(&self, text: &'a str) -> Cow<'a, [u8]> {
        Cow::from(text.as_bytes())
    }
}

impl Decoder for UTF8Encoding {
    fn decode<'a>(&self, text: &'a [u8]) -> &'a str {
        str::from_utf8(text).expect("should be utf8 string")
    }
}