refactor(nix-compat/wire): drop primitive functions r/8042

These may as well be inlined, and hardly need tests, since they just
alias AsyncReadExt::read_u64_le / AsyncWriteExt::write_u64_le.

Boolean reading is worth making explicit, since callers may differ on
how they want to handle values other than 0 and 1.

Boolean writing simplifies to `.write_u64_le(x as u64)`, which is also
fine to inline.

Change-Id: Ief9722fe886688693feb924ff0306b5bc68dd7a2
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11549
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI

2 files changed, 5 insertions, 9 deletions

diff --git a/tvix/nix-compat/src/wire/bytes/mod.rs b/tvix/nix-compat/src/wire/bytes/mod.rs
index 031d969e287f..fc777bafe20f 100644
--- a/tvix/nix-compat/src/wire/bytes/mod.rs
+++ b/tvix/nix-compat/src/wire/bytes/mod.rs
@@ -9,8 +9,6 @@ pub use reader::BytesReader;
 mod writer;
 pub use writer::BytesWriter;
 
-use super::primitive;
-
 /// 8 null bytes, used to write out padding.
 const EMPTY_BYTES: &[u8; 8] = &[0u8; 8];
 
@@ -41,7 +39,7 @@ where
     S: RangeBounds<u64>,
 {
     // read the length field
-    let len = primitive::read_u64(r).await?;
+    let len = r.read_u64_le().await?;
 
     if !allowed_size.contains(&len) {
         return Err(std::io::Error::new(
@@ -52,7 +50,7 @@ where
 
     // calculate the total length, including padding.
     // byte packets are padded to 8 byte blocks each.
-    let padded_len = padding_len(len) as u64 + (len as u64);
+    let padded_len = padding_len(len) as u64 + len;
     let mut limited_reader = r.take(padded_len);
 
     let mut buf = Vec::new();
@@ -105,7 +103,7 @@ pub async fn write_bytes<W: AsyncWriteExt + Unpin, B: AsRef<[u8]>>(
     b: B,
 ) -> std::io::Result<()> {
     // write the size packet.
-    primitive::write_u64(w, b.as_ref().len() as u64).await?;
+    w.write_u64_le(b.as_ref().len() as u64).await?;
 
     // write the payload
     w.write_all(b.as_ref()).await?;
diff --git a/tvix/nix-compat/src/wire/bytes/reader/mod.rs b/tvix/nix-compat/src/wire/bytes/reader/mod.rs
index ef59e9c160e4..50398d9b9e40 100644
--- a/tvix/nix-compat/src/wire/bytes/reader/mod.rs
+++ b/tvix/nix-compat/src/wire/bytes/reader/mod.rs
@@ -5,9 +5,7 @@ use std::{
     pin::Pin,
     task::{self, ready, Poll},
 };
-use tokio::io::{AsyncRead, ReadBuf};
-
-use crate::wire::read_u64;
+use tokio::io::{AsyncRead, AsyncReadExt, ReadBuf};
 
 use trailer::{read_trailer, ReadTrailer, Trailer};
 mod trailer;
@@ -52,7 +50,7 @@ where
 {
     /// Constructs a new BytesReader, using the underlying passed reader.
     pub async fn new<S: RangeBounds<u64>>(mut reader: R, allowed_size: S) -> io::Result<Self> {
-        let size = read_u64(&mut reader).await?;
+        let size = reader.read_u64_le().await?;
 
         if !allowed_size.contains(&size) {
             return Err(io::Error::new(io::ErrorKind::InvalidData, "invalid size"));