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use encodings::hex::{FromHex, FromHexError, ToHex};
use extended_primitives::{Buffer, BufferError};
use std::fmt;
#[derive(Debug)]
pub enum DecodingError {
InvalidData(String),
Buffer(BufferError),
Hex(FromHexError),
UnknownInventory,
}
impl From<FromHexError> for DecodingError {
fn from(e: FromHexError) -> DecodingError {
DecodingError::Hex(e)
}
}
impl From<BufferError> for DecodingError {
fn from(e: BufferError) -> DecodingError {
DecodingError::Buffer(e)
}
}
impl fmt::Display for DecodingError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
DecodingError::InvalidData(ref e) => write!(f, "Invalid Data: {}", e),
DecodingError::Buffer(ref e) => write!(f, "Buffer Error: {}", e),
DecodingError::Hex(ref e) => write!(f, "Hex Error: {}", e),
DecodingError::UnknownInventory => write!(f, "Unknown Inventory Type"),
}
}
}
pub trait Encodable {
fn size(&self) -> usize;
fn encode(&self) -> Buffer;
}
pub trait Decodable
where
Self: Sized,
{
type Err;
fn decode(buffer: &mut Buffer) -> Result<Self, Self::Err>;
}