in midst of refactor

orchid-api-traits/src/helpers.rs

@@ -0,0 +1,18 @@
+use std::io::{Read, Write};
+
+use crate::Encode;
+
+pub fn encode_enum<W: Write>(write: &mut W, id: u8, f: impl FnOnce(&mut W)) {
+  id.encode(write);
+  f(write)
+}
+
+pub fn write_exact(write: &mut impl Write, bytes: &'static [u8]) {
+  write.write_all(bytes).expect("Failed to write exact bytes")
+}
+
+pub fn read_exact(read: &mut impl Read, bytes: &'static [u8]) {
+  let mut data = vec![0u8; bytes.len()];
+  read.read_exact(&mut data).expect("Failed to read bytes");
+  assert_eq!(&data, bytes, "Wrong bytes")
+}