Adding upstream version 2.5.1.

Signed-off-by: Daniel Baumann <daniel@debian.org>

search/searcher/ordered_searchers_list.go

@@ -0,0 +1,55 @@
+//  Copyright (c) 2014 Couchbase, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 		http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package searcher
+
+import (
+	"github.com/blevesearch/bleve/v2/search"
+)
+
+type OrderedSearcherList []search.Searcher
+
+// sort.Interface
+
+func (otrl OrderedSearcherList) Len() int {
+	return len(otrl)
+}
+
+func (otrl OrderedSearcherList) Less(i, j int) bool {
+	return otrl[i].Count() < otrl[j].Count()
+}
+
+func (otrl OrderedSearcherList) Swap(i, j int) {
+	otrl[i], otrl[j] = otrl[j], otrl[i]
+}
+
+type OrderedPositionalSearcherList struct {
+	searchers []search.Searcher
+	index     []int
+}
+
+// sort.Interface
+
+func (otrl OrderedPositionalSearcherList) Len() int {
+	return len(otrl.searchers)
+}
+
+func (otrl OrderedPositionalSearcherList) Less(i, j int) bool {
+	return otrl.searchers[i].Count() < otrl.searchers[j].Count()
+}
+
+func (otrl OrderedPositionalSearcherList) Swap(i, j int) {
+	otrl.searchers[i], otrl.searchers[j] = otrl.searchers[j], otrl.searchers[i]
+	otrl.index[i], otrl.index[j] = otrl.index[j], otrl.index[i]
+}