From 30375615b3560f8cd51acdd027e7d908c13a2057 Mon Sep 17 00:00:00 2001
From: Matt Joiner <anacrolix@gmail.com>
Date: Sat, 11 Dec 2021 14:14:24 +1100
Subject: [PATCH] Remove unused request strategy code

---
 request-strategy/order.go      | 26 ------------
 request-strategy/order_test.go | 72 ----------------------------------
 request-strategy/peer.go       | 27 -------------
 3 files changed, 125 deletions(-)
 delete mode 100644 request-strategy/order_test.go

diff --git a/request-strategy/order.go b/request-strategy/order.go
index 4068ed4d..0fa51698 100644
--- a/request-strategy/order.go
+++ b/request-strategy/order.go
@@ -43,32 +43,6 @@ func pieceOrderLess(i, j pieceOrderInput) multiless.Computation {
 	})
 }
 
-type requestsPeer struct {
-	Peer
-	nextState                  PeerNextRequestState
-	requestablePiecesRemaining int
-}
-
-func (rp *requestsPeer) canFitRequest() bool {
-	return int(rp.nextState.Requests.GetCardinality()) < rp.MaxRequests
-}
-
-func (rp *requestsPeer) addNextRequest(r RequestIndex) {
-	if !rp.nextState.Requests.CheckedAdd(r) {
-		panic("should only add once")
-	}
-}
-
-type peersForPieceRequests struct {
-	requestsInPiece int
-	*requestsPeer
-}
-
-func (me *peersForPieceRequests) addNextRequest(r RequestIndex) {
-	me.requestsPeer.addNextRequest(r)
-	me.requestsInPiece++
-}
-
 var packageExpvarMap = expvar.NewMap("request-strategy")
 
 // Calls f with requestable pieces in order.
diff --git a/request-strategy/order_test.go b/request-strategy/order_test.go
deleted file mode 100644
index bcac41d1..00000000
--- a/request-strategy/order_test.go
+++ /dev/null
@@ -1,72 +0,0 @@
-package request_strategy
-
-import (
-	"encoding/gob"
-	"testing"
-
-	"github.com/RoaringBitmap/roaring"
-	qt "github.com/frankban/quicktest"
-	"github.com/google/go-cmp/cmp"
-)
-
-func init() {
-	gob.Register(chunkIterRange(0))
-	gob.Register(sliceChunksIter{})
-}
-
-type chunkIterRange ChunkIndex
-
-func (me chunkIterRange) Iter(f func(ChunkIndex)) {
-	for offset := ChunkIndex(0); offset < ChunkIndex(me); offset += 1 {
-		f(offset)
-	}
-}
-
-type sliceChunksIter []ChunkIndex
-
-func chunkIter(offsets ...ChunkIndex) ChunksIter {
-	return sliceChunksIter(offsets)
-}
-
-func (offsets sliceChunksIter) Iter(f func(ChunkIndex)) {
-	for _, offset := range offsets {
-		f(offset)
-	}
-}
-
-func requestSetFromSlice(rs ...RequestIndex) (ret roaring.Bitmap) {
-	ret.AddMany(rs)
-	return
-}
-
-func init() {
-	gob.Register(intPeerId(0))
-}
-
-type intPeerId int
-
-func (i intPeerId) Uintptr() uintptr {
-	return uintptr(i)
-}
-
-var hasAllRequests = func() (all roaring.Bitmap) {
-	all.AddRange(0, roaring.MaxRange)
-	return
-}()
-
-func checkNumRequestsAndInterest(c *qt.C, next PeerNextRequestState, num uint64, interest bool) {
-	addressableBm := next.Requests
-	c.Check(addressableBm.GetCardinality(), qt.ContentEquals, num)
-	c.Check(next.Interested, qt.Equals, interest)
-}
-
-func checkResultsRequestsLen(t *testing.T, reqs roaring.Bitmap, l uint64) {
-	qt.Check(t, reqs.GetCardinality(), qt.Equals, l)
-}
-
-var peerNextRequestStateChecker = qt.CmpEquals(
-	cmp.Transformer(
-		"bitmap",
-		func(bm roaring.Bitmap) []uint32 {
-			return bm.ToArray()
-		}))
diff --git a/request-strategy/peer.go b/request-strategy/peer.go
index b031d28e..be870636 100644
--- a/request-strategy/peer.go
+++ b/request-strategy/peer.go
@@ -1,8 +1,6 @@
 package request_strategy
 
 import (
-	"time"
-
 	"github.com/RoaringBitmap/roaring"
 )
 
@@ -10,28 +8,3 @@ type PeerNextRequestState struct {
 	Interested bool
 	Requests   roaring.Bitmap
 }
-
-type PeerId interface {
-	Uintptr() uintptr
-}
-
-type Peer struct {
-	Pieces           roaring.Bitmap
-	MaxRequests      int
-	ExistingRequests roaring.Bitmap
-	Choking          bool
-	PieceAllowedFast roaring.Bitmap
-	DownloadRate     float64
-	Age              time.Duration
-	// This is passed back out at the end, so must support equality. Could be a type-param later.
-	Id PeerId
-}
-
-// TODO: This might be used in more places I think.
-func (p *Peer) canRequestPiece(i pieceIndex) bool {
-	return (!p.Choking || p.PieceAllowedFast.Contains(uint32(i))) && p.HasPiece(i)
-}
-
-func (p *Peer) HasPiece(i pieceIndex) bool {
-	return p.Pieces.Contains(uint32(i))
-}
-- 
2.48.1