start with write

amqp_transport/src/classes/mod.rs

@@ -4,6 +4,7 @@ use std::collections::HashMap;
 
 mod generated;
 mod parse_helper;
+mod write_helper;
 
 pub type Table = HashMap<String, FieldValue>;
 

amqp_transport/src/classes/write_helper.rs

@@ -0,0 +1,47 @@
+use crate::classes::generated::{
+    Bit, Long, Longlong, Longstr, Octet, Short, Shortstr, Table, Timestamp,
+};
+use crate::error::TransError;
+use std::io;
+use std::io::Write;
+
+fn error(e: io::Error) -> TransError {
+    TransError::Other(e.into())
+}
+
+pub fn octet<W: Write>(value: Octet, writer: &mut W) -> Result<(), TransError> {
+    writer.write_all(&[value])?;
+    Ok(())
+}
+
+pub fn short<W: Write>(value: Short, writer: &mut W) -> Result<(), TransError> {
+    todo!()
+}
+
+pub fn long<W: Write>(value: Long, writer: &mut W) -> Result<(), TransError> {
+    todo!()
+}
+
+pub fn longlong<W: Write>(value: Longlong, writer: &mut W) -> Result<(), TransError> {
+    todo!()
+}
+
+pub fn bit<W: Write>(value: Vec<Bit>, writer: &mut W) -> Result<(), TransError> {
+    todo!()
+}
+
+pub fn shortstr<W: Write>(value: Shortstr, writer: &mut W) -> Result<(), TransError> {
+    todo!()
+}
+
+pub fn longstr<W: Write>(value: Longstr, writer: &mut W) -> Result<(), TransError> {
+    todo!()
+}
+
+pub fn timestamp<W: Write>(value: Timestamp, writer: &mut W) -> Result<(), TransError> {
+    todo!()
+}
+
+pub fn table<W: Write>(value: Table, writer: &mut W) -> Result<(), TransError> {
+    todo!()
+}