refactor: split into more logical files

src/protocols.rs

@@ -0,0 +1,29 @@
+mod binary_protocol;
+mod text_protocol;
+
+use std::io;
+
+pub use binary_protocol::BinaryParser;
+pub use text_protocol::TextParser;
+use tokio::io::AsyncWriteExt;
+
+use crate::{Canvas, Command, Response};
+
+pub trait Parser<R>
+where
+    R: std::marker::Unpin + tokio::io::AsyncBufRead,
+{
+    async fn parse(&self, reader: &mut R) -> io::Result<Command>;
+}
+
+pub trait IOProtocol {
+    fn change_canvas(&mut self, canvas: Canvas) -> io::Result<()>;
+}
+
+pub trait Responder<W>
+where
+    W: AsyncWriteExt + std::marker::Unpin,
+{
+    async fn unparse(&self, response: Response, writer: &mut W) -> io::Result<()>;
+}
+