From 60bdf619a38f05f8a8815feffc562b0e5c40143f Mon Sep 17 00:00:00 2001
From: Jürgen Hahn <mail.jhahn@gmail.com>
Date: Fri, 30 Dec 2022 16:40:58 +0100
Subject: feat(tvix/store): refactor digest conversion

This refactors how the original digest type (Vec<u8>) is converted
to [u8; PATH_HASH_SIZE].

Change-Id: I9441470a3a199620fcf328f2b7c890ca6ae93bde
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7710
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
---
 tvix/store/src/nixpath.rs | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

(limited to 'tvix/store/src')

diff --git a/tvix/store/src/nixpath.rs b/tvix/store/src/nixpath.rs
index 8232e3241e11..44350803eafa 100644
--- a/tvix/store/src/nixpath.rs
+++ b/tvix/store/src/nixpath.rs
@@ -49,13 +49,9 @@ impl NixPath {
 
         NixPath::validate_characters(&s[name_offset..])?;
 
-        // copy the digest:Vec<u8> to a [u8; PATH_HASH_SIZE]
-        let mut buffer: [u8; PATH_HASH_SIZE] = [0; PATH_HASH_SIZE];
-        buffer[..PATH_HASH_SIZE].copy_from_slice(&digest[..PATH_HASH_SIZE]);
-
         Ok(NixPath {
             name: s[name_offset..].to_string(),
-            digest: buffer,
+            digest: digest.try_into().expect("size is known"),
         })
     }
 
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