io: derive DynStream from RootObj (not Stream)

This way they are no longer compatible, but we no longer need them to
be compatible anyway.

(This also forces us to throw out the old serialize module, and use
packet writers everywhere.)

1 files changed, 2 insertions, 8 deletions

diff --git a/src/io/bufwriter.nim b/src/io/bufwriter.nim
index cbee8b5b..75da4190 100644
--- a/src/io/bufwriter.nim
+++ b/src/io/bufwriter.nim
@@ -1,4 +1,5 @@
-# Write data to streams.
+# Write data to streams in packets.
+# Each packet is prefixed with its length as a pointer-sized integer.
 
 import std/options
 import std/sets
@@ -53,13 +54,6 @@ proc deinit*(writer: var BufferedWriter) =
   writer.bufSize = 0
   writer.bufLen = 0
 
-template withWriter*(stream: DynStream; w, body: untyped) =
-  block:
-    var w = stream.initWriter()
-    body
-    w.flush()
-    w.deinit()
-
 template withPacketWriter*(stream: DynStream; w, body: untyped) =
   block:
     var w = stream.initWriter(writeLen = true)