From: YenForYang <YenForYang@users.noreply.github.com>
Date: Sat, 18 Sep 2021 01:35:21 +0000 (-0500)
Subject: metainfo: Remove reflection dependency for `Piece.Hash()` (#661)
X-Git-Tag: v1.32.0~45
X-Git-Url: http://www.git.stargrave.org/?a=commitdiff_plain;h=c740cde71bfb9d5b570c42dc2659c00b121b7bc8;p=btrtrc.git

metainfo: Remove reflection dependency for `Piece.Hash()` (#661)

`copy`  will copy exactly `HashSize` bytes here.
---

diff --git a/metainfo/piece.go b/metainfo/piece.go
index b204faae..d8895384 100644
--- a/metainfo/piece.go
+++ b/metainfo/piece.go
@@ -1,9 +1,5 @@
 package metainfo
 
-import (
-	"github.com/anacrolix/missinggo/v2"
-)
-
 type Piece struct {
 	Info *Info // Can we embed the fields here instead, or is it something to do with saving memory?
 	i    pieceIndex
@@ -23,7 +19,7 @@ func (p Piece) Offset() int64 {
 }
 
 func (p Piece) Hash() (ret Hash) {
-	missinggo.CopyExact(&ret, p.Info.Pieces[p.i*HashSize:(p.i+1)*HashSize])
+	copy(ret[:], p.Info.Pieces[p.i*HashSize:(p.i+1)*HashSize])
 	return
 }