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gitea/vendor/github.com/blevesearch/bleve/search/collector/slice.go
Lunny Xiao a380cfd8e0 Update bleve dependency to latest master revision (#6100)
* update bleve to master b17287a86f6cac923a5d886e10618df994eeb54b6724eac2e3b8dde89cfbe3a2

* remove unused pkg from dep file

* change bleve from master to recent revision
2019-02-17 19:50:26 -05:00

78 lines
2.0 KiB
Go

// 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 collector
import "github.com/blevesearch/bleve/search"
type collectStoreSlice struct {
slice search.DocumentMatchCollection
compare collectorCompare
}
func newStoreSlice(capacity int, compare collectorCompare) *collectStoreSlice {
rv := &collectStoreSlice{
slice: make(search.DocumentMatchCollection, 0, capacity),
compare: compare,
}
return rv
}
func (c *collectStoreSlice) AddNotExceedingSize(doc *search.DocumentMatch,
size int) *search.DocumentMatch {
c.add(doc)
if c.len() > size {
return c.removeLast()
}
return nil
}
func (c *collectStoreSlice) add(doc *search.DocumentMatch) {
// find where to insert, starting at end (lowest)
i := len(c.slice)
for ; i > 0; i-- {
cmp := c.compare(doc, c.slice[i-1])
if cmp >= 0 {
break
}
}
// insert at i
c.slice = append(c.slice, nil)
copy(c.slice[i+1:], c.slice[i:])
c.slice[i] = doc
}
func (c *collectStoreSlice) removeLast() *search.DocumentMatch {
var rv *search.DocumentMatch
rv, c.slice = c.slice[len(c.slice)-1], c.slice[:len(c.slice)-1]
return rv
}
func (c *collectStoreSlice) Final(skip int, fixup collectorFixup) (search.DocumentMatchCollection, error) {
for i := skip; i < len(c.slice); i++ {
err := fixup(c.slice[i])
if err != nil {
return nil, err
}
}
if skip <= len(c.slice) {
return c.slice[skip:], nil
}
return search.DocumentMatchCollection{}, nil
}
func (c *collectStoreSlice) len() int {
return len(c.slice)
}