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//! # AsBytes trait definition
//!
//! This module hosts the `AsBytes` traits, which is used by the AVL Tree to convert value to raw
//! bytes. This is helpful for making the AVL Tree generic over a wide range of data types for its
//! keys (the values still need to implement `Borrow<[u8]>), as long as they can be interpreted as
//! a slice of bytes.
//!
//! To add support for a new type in the AVL Tree, simply implement the `AsByte` trait for that type.

/// A trait for objects that can be interpreted as a slice of bytes.
pub trait AsBytes {
    fn as_bytes(&self) -> &[u8];
}

impl AsBytes for Vec<u8> {
    fn as_bytes(&self) -> &[u8] {
        self.as_slice()
    }
}

impl AsBytes for [u8] {
    fn as_bytes(&self) -> &[u8] {
        self
    }
}

impl AsBytes for str {
    fn as_bytes(&self) -> &[u8] {
        self.as_bytes()
    }
}

impl AsBytes for &str {
    fn as_bytes(&self) -> &[u8] {
        (*self).as_bytes()
    }
}

impl AsBytes for String {
    fn as_bytes(&self) -> &[u8] {
        self.as_bytes()
    }
}

impl AsBytes for [u8; 1] {
    fn as_bytes(&self) -> &[u8] {
        self
    }
}