Reconcile retained history accounting

internal/engine/history.go

@@ -40,50 +40,6 @@ func (c *retainedNodeCounter) add(root *document.Node) bool {
 	return true
 }
 
-func (c *retainedNodeCounter) canAddClones(roots []*document.Node, copies int) bool {
-	if c == nil || c.limit < 0 {
-		return true
-	}
-	remaining := c.limit - c.count
-	if remaining < 0 {
-		return false
-	}
-	for copyIndex := 0; copyIndex < copies; copyIndex++ {
-		for _, root := range roots {
-			count, within := documentCloneNodeCount(root, remaining)
-			if !within {
-				return false
-			}
-			remaining -= count
-		}
-	}
-	return true
-}
-
-func documentCloneNodeCount(root *document.Node, limit int) (int, bool) {
-	if root == nil {
-		return 0, true
-	}
-	count := 0
-	stack := []*document.Node{root}
-	for len(stack) != 0 {
-		node := stack[len(stack)-1]
-		stack = stack[:len(stack)-1]
-		if node == nil {
-			continue
-		}
-		count++
-		if count > limit {
-			return 0, false
-		}
-		for _, entry := range node.Mapping {
-			stack = append(stack, entry.Value)
-		}
-		stack = append(stack, node.Sequence...)
-	}
-	return count, true
-}
-
 func addInspectionHistory(counter *retainedNodeCounter, inspection *Inspection) bool {
 	if inspection == nil || inspection.history == nil {
 		return false
@@ -93,7 +49,7 @@ func addInspectionHistory(counter *retainedNodeCounter, inspection *Inspection)
 			return false
 		}
 	}
-	return true
+	return counter.add(inspection.final)
 }
 
 // History applications borrow immutable policy-validated input trees. Metadata