.

wcfs/internal/xbtree/δbtail.go

@@ -118,19 +118,19 @@ type _ΔTtail struct {
 // It describes which trees were changed, but does not provide δkv details for changed trees.
 type _ΔBroots struct {
 	Rev   zodb.Tid
-	ΔRoots setOid   // which roots changed in this revision
+	Roots setOid   // which roots changed in this revision
 }
 
 // ΔB represents a change in BTrees space.
 type ΔB struct {
 	Rev    zodb.Tid
-	ΔByRoot map[zodb.Oid]map[Key]ΔValue // {} root -> {}(key, δvalue)
+	ByRoot map[zodb.Oid]map[Key]ΔValue // {} root -> {}(key, δvalue)
 }
 
 // ΔTree describes changes to one BTree in one revision.
 type ΔTree struct {
 	Rev  zodb.Tid
-	ΔKV  map[Key]ΔValue
+	ΔKV  map[Key]ΔValue	// XXX -> KV ?
 }
 
 
@@ -175,7 +175,7 @@ func (orig *ΔBtail) Clone() *ΔBtail {
 	for _, origδBroots := range orig.vδBroots {
 		klonδBroots := _ΔBroots{
 			Rev:   origδBroots.Rev,
-			ΔRoots: origδBroots.ΔRoots.Clone(),
+			Roots: origδBroots.Roots.Clone(),
 		}
 		klon.vδBroots = append(klon.vδBroots, klonδBroots)
 	}
@@ -566,7 +566,7 @@ func (δBtail *ΔBtail) Update(δZ *zodb.EventCommit) (_ ΔB, err error) {
 
 	δB1, err := δBtail._Update1(δZ)
 
-	δB := ΔB{Rev: δZ.Tid, ΔByRoot: make(map[zodb.Oid]map[Key]ΔValue)}
+	δB := ΔB{Rev: δZ.Tid, ByRoot: make(map[zodb.Oid]map[Key]ΔValue)}
 	for root, δT1 := range δB1.ByRoot {
 		δTtail := δBtail.vδTbyRoot[root] // must succeed
 
@@ -597,7 +597,7 @@ func (δBtail *ΔBtail) Update(δZ *zodb.EventCommit) (_ ΔB, err error) {
 		if l > 0 {
 			δT := δTtail.vδT[l-1] // δT head
 			if δT.Rev == δZ.Tid {
-				δB.ΔByRoot[root] = δT.ΔKV
+				δB.ByRoot[root] = δT.ΔKV
 			}
 		}
 
@@ -605,7 +605,7 @@ func (δBtail *ΔBtail) Update(δZ *zodb.EventCommit) (_ ΔB, err error) {
 	}
 
 	// vδBroots += δB  (δB.Rev could be already there added by ^^^ rebuild)
-	for root := range δB.ΔByRoot {
+	for root := range δB.ByRoot {
 		δBtail.vδBroots_Update1(root, δB.Rev)
 	}
 
@@ -704,14 +704,14 @@ func (δBtail *ΔBtail) vδBroots_Update1(root zodb.Oid, rev zodb.Tid) {
 		return rev <= δBtail.vδBroots[k].Rev
 	})
 	if j == l || rev != δBtail.vδBroots[j].Rev {
-		δBroots := _ΔBroots{Rev: rev, ΔRoots: setOid{}}
+		δBroots := _ΔBroots{Rev: rev, Roots: setOid{}}
 		// insert(@j, δBroots)
 		δBtail.vδBroots = append(δBtail.vδBroots[:j],
 					 append([]_ΔBroots{δBroots},
 					 δBtail.vδBroots[j:]...)...)
 	}
 	δBroots := δBtail.vδBroots[j]
-	δBroots.ΔRoots.Add(root)
+	δBroots.Roots.Add(root)
 }
 
 // ForgetPast forgets history entries with revision ≤ revCut.
@@ -729,7 +729,7 @@ func (δBtail *ΔBtail) ForgetPast(revCut zodb.Tid) {
 		if δBroots.Rev > revCut {
 			break
 		}
-		totrim.Update(δBroots.ΔRoots)
+		totrim.Update(δBroots.Roots)
 	}
 
 	// vδBroots[:icut] should be forgotten

wcfs/internal/xbtree/δbtail_test.go

@@ -757,20 +757,20 @@ func xverifyΔBTail_Update1(t *testing.T, subj string, db *zodb.DB, treeRoot zod
 		rootsOK.Add(treeRoot)
 	}
 	roots := setOid{}
-	for root := range δB.ΔByRoot {
+	for root := range δB.ByRoot {
 		roots.Add(root)
 	}
 	if !reflect.DeepEqual(roots, rootsOK) {
 		badf("δB: roots != rootsOK  ; roots=%v  rootsOK=%v", roots, rootsOK)
 	}
-	_, inδB := δB.ΔByRoot[treeRoot]
+	_, inδB := δB.ByRoot[treeRoot]
 	if !inδB {
 		return
 	}
 
 
 	// δT <- δB
-	δToid := δB.ΔByRoot[treeRoot]  // {} k -> δoid
+	δToid := δB.ByRoot[treeRoot]   // {} k -> δoid
 	δT     = xgetδKV(t1,t2, δToid) // {} k -> δ(ZBlk(oid).data)
 
 	// δT must be subset of d12.
@@ -1020,15 +1020,15 @@ func xverifyΔBTail_rebuild_U(t *testing.T, δbtail *ΔBtail, treeRoot zodb.Oid,
 	for root := range δbtail.vδTbyRoot {
 		δroots.Add(root)
 	}
-	δToid, ok := δB.ΔByRoot[treeRoot]
+	δToid, ok := δB.ByRoot[treeRoot]
 	if ok {
 		δT = xgetδKV(ti, tj, δToid)
 	}
 	if δB.Rev != tj.At {
 		t.Errorf("%s: δB.Rev: have %s  ; want %s", subj, δB.Rev, tj.At)
 	}
-	if len(δB.ΔByRoot) != δrootsOK {
-		t.Errorf("%s: len(δB.ΔByRoot) != %d  ; δroots=%v", subj, δrootsOK, δroots)
+	if len(δB.ByRoot) != δrootsOK {
+		t.Errorf("%s: len(δB.ByRoot) != %d  ; δroots=%v", subj, δrootsOK, δroots)
 	}
 	if !δTEqual(δT, δTok) {
 		t.Errorf("%s: δB.ΔBByRoot[%s]:\nhave: %v\nwant: %v", subj, treeRoot, δT, δTok)
@@ -1554,7 +1554,7 @@ func assertΔTtail(t *testing.T, subj string, δbtail *ΔBtail, tj *xbtreetest.C
 
 	var vatδB []zodb.Tid // δbtail.vδBroots/treeRoot
 	for _, δBroots := range δbtail.vδBroots {
-		if δBroots.ΔRoots.Has(treeRoot) {
+		if δBroots.Roots.Has(treeRoot) {
 			vatδB = append(vatδB, δBroots.Rev)
 		}
 	}

wcfs/internal/zdata/δftail.go

@@ -305,13 +305,13 @@ func (δFtail *ΔFtail) rebuildIfNeeded(foid zodb.Oid) (_ *_ΔFileTail, err erro
 	return δftail, err
 }
 
-// rebuild rebuilds vδE.
+// rebuild1 rebuilds vδE.
 func (δftail *_ΔFileTail) rebuild1(foid zodb.Oid, δZtail *zodb.ΔTail, db *zodb.DB) (err error) {
 	defer xerr.Contextf(&err, "file<%s>: rebuild", foid)
 
 	// XXX locking
 	if δftail.vδE != nil {
-		panic("rebuild: vδE != nil")
+		panic("rebuild1: vδE != nil")
 	}
 
 	vδE := []_ΔFileEpoch{}
@@ -372,7 +372,6 @@ func (δFtail *ΔFtail) Update(δZ *zodb.EventCommit) (_ ΔF, err error) {
 	}
 
 	headOld := δFtail.Head()
-
 	δB, err := δFtail.δBtail.Update(δZ)
 	if err != nil {
 		return ΔF{}, err
@@ -418,8 +417,8 @@ func (δFtail *ΔFtail) Update(δZ *zodb.EventCommit) (_ ΔF, err error) {
 	}
 
 	// take btree changes into account
-	//fmt.Printf("δB.ΔByRoot: %v\n", δB.ΔByRoot)
-	for root, δt := range δB.ΔByRoot {
+	//fmt.Printf("δB.ByRoot: %v\n", δB.ByRoot)
+	for root, δt := range δB.ByRoot {
 		//fmt.Printf("root: %v   δt: %v\n", root, δt)
 		files := δFtail.filesByRoot[root]
 		// NOTE files might be empty e.g. if a zfile was tracked, then