Split devtools implementation into sensible modules.

components/devtools/protocol.rs

@@ -0,0 +1,22 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/// Low-level wire protocol implementation. Currently only supports [JSON packets](https://wiki.mozilla.org/Remote_Debugging_Protocol_Stream_Transport#JSON_Packets).
+
+use serialize::{json, Encodable};
+use std::io::{IoError, TcpStream};
+
+pub trait JsonPacketSender {
+    fn write_json_packet<'a, T: Encodable<json::Encoder<'a>,IoError>>(&mut self, obj: &T);
+}
+
+impl JsonPacketSender for TcpStream {
+    fn write_json_packet<'a, T: Encodable<json::Encoder<'a>,IoError>>(&mut self, obj: &T) {
+        let s = json::encode(obj).replace("__type__", "type");
+        println!("<- {:s}", s);
+        self.write_str(s.len().to_string().as_slice()).unwrap();
+        self.write_u8(':' as u8).unwrap();
+        self.write_str(s.as_slice()).unwrap();
+    }
+}