forked from Shiloh/githaven
70 lines
2.0 KiB
Go
Vendored
70 lines
2.0 KiB
Go
Vendored
// Copyright (c) 2014 Couchbase, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package search
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func MergeLocations(locations []FieldTermLocationMap) FieldTermLocationMap {
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rv := locations[0]
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for i := 1; i < len(locations); i++ {
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nextLocations := locations[i]
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for field, termLocationMap := range nextLocations {
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rvTermLocationMap, rvHasField := rv[field]
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if rvHasField {
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rv[field] = MergeTermLocationMaps(rvTermLocationMap, termLocationMap)
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} else {
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rv[field] = termLocationMap
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}
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}
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}
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return rv
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}
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func MergeTermLocationMaps(rv, other TermLocationMap) TermLocationMap {
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for term, locationMap := range other {
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// for a given term/document there cannot be different locations
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// if they came back from different clauses, overwrite is ok
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rv[term] = locationMap
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}
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return rv
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}
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func MergeFieldTermLocations(dest []FieldTermLocation, matches []*DocumentMatch) []FieldTermLocation {
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n := len(dest)
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for _, dm := range matches {
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n += len(dm.FieldTermLocations)
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}
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if cap(dest) < n {
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dest = append(make([]FieldTermLocation, 0, n), dest...)
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}
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for _, dm := range matches {
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for _, ftl := range dm.FieldTermLocations {
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dest = append(dest, FieldTermLocation{
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Field: ftl.Field,
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Term: ftl.Term,
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Location: Location{
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Pos: ftl.Location.Pos,
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Start: ftl.Location.Start,
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End: ftl.Location.End,
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ArrayPositions: append(ArrayPositions(nil), ftl.Location.ArrayPositions...),
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},
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})
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}
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}
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return dest
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}
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