Upgrade blevesearch dependency to v2.0.1 (#14346)

* Upgrade blevesearch dependency to v2.0.1 * Update rupture to v1.0.0 * Fix test
2021-01-18 03:21:14 +02:00 · 2021-01-18 03:21:14 +02:00 · f5abe2f563
commit f5abe2f563
parent 3aa53dc6bc
459 changed files with 7518 additions and 4211 deletions
--- a/vendor/github.com/blevesearch/bleve_index_api/.golangci.yml
+++ b/vendor/github.com/blevesearch/bleve_index_api/.golangci.yml
@ -0,0 +1,37 @@
+linters:
+  # please, do not use `enable-all`: it's deprecated and will be removed soon.
+  # inverted configuration with `enable-all` and `disable` is not scalable during updates of golangci-lint
+  disable-all: true
+  enable:
+    - bodyclose
+    - deadcode
+    - depguard
+    - dogsled
+    - dupl
+    - errcheck
+    - goconst
+    - gocritic
+    - gocyclo
+    - gofmt
+    - goimports
+    - gomnd
+    - goprintffuncname
+    - gosimple
+    - govet
+    - ineffassign
+    - interfacer
+    - lll
+    - misspell
+    - nakedret
+    - nolintlint
+    - rowserrcheck
+    - scopelint
+    - staticcheck
+    - structcheck
+    - stylecheck
+    - typecheck
+    - unconvert
+    - unparam
+    - unused
+    - varcheck
+    - whitespace
--- a/vendor/github.com/blevesearch/bleve_index_api/LICENSE
+++ b/vendor/github.com/blevesearch/bleve_index_api/LICENSE
@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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--- a/vendor/github.com/blevesearch/bleve_index_api/README.md
+++ b/vendor/github.com/blevesearch/bleve_index_api/README.md
@ -0,0 +1,11 @@
+# Bleve Index API
+
+[![PkgGoDev](https://pkg.go.dev/badge/github.com/blevesearch/bleve_index_api)](https://pkg.go.dev/github.com/blevesearch/bleve_index_api)
+[![Tests](https://github.com/blevesearch/bleve_index_api/workflows/Tests/badge.svg?branch=master&event=push)](https://github.com/blevesearch/bleve_index_api/actions?query=workflow%3ATests+event%3Apush+branch%3Amaster)
+[![Lint](https://github.com/blevesearch/bleve_index_api/workflows/Lint/badge.svg?branch=master&event=push)](https://github.com/blevesearch/bleve_index_api/actions?query=workflow%3ALint+event%3Apush+branch%3Amaster)
+
+Bleve supports a pluggable Index interface.
+
+By placing these interfaces in their own, *hopefully* slowly evolving module, it frees up Bleve and the underlying index to each introduce new major versions without interfering with one another.
+
+With that in mind, we anticipate introducing non-breaking changes only to this module, and keeping the major version at 1.x for some time.
--- a/vendor/github.com/blevesearch/bleve_index_api/analysis.go
+++ b/vendor/github.com/blevesearch/bleve_index_api/analysis.go
@ -0,0 +1,53 @@
+//  Copyright (c) 2015 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 index
+
+type AnalysisWork func()
+
+type AnalysisQueue struct {
+	queue chan AnalysisWork
+	done  chan struct{}
+}
+
+func (q *AnalysisQueue) Queue(work AnalysisWork) {
+	q.queue <- work
+}
+
+func (q *AnalysisQueue) Close() {
+	close(q.done)
+}
+
+func NewAnalysisQueue(numWorkers int) *AnalysisQueue {
+	rv := AnalysisQueue{
+		queue: make(chan AnalysisWork),
+		done:  make(chan struct{}),
+	}
+	for i := 0; i < numWorkers; i++ {
+		go AnalysisWorker(rv)
+	}
+	return &rv
+}
+
+func AnalysisWorker(q AnalysisQueue) {
+	// read work off the queue
+	for {
+		select {
+		case <-q.done:
+			return
+		case w := <-q.queue:
+			w()
+		}
+	}
+}
--- a/vendor/github.com/blevesearch/bleve_index_api/batch.go
+++ b/vendor/github.com/blevesearch/bleve_index_api/batch.go
@ -0,0 +1,101 @@
+//  Copyright (c) 2020 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 index
+
+import "fmt"
+
+type BatchCallback func(error)
+
+type Batch struct {
+	IndexOps          map[string]Document
+	InternalOps       map[string][]byte
+	persistedCallback BatchCallback
+}
+
+func NewBatch() *Batch {
+	return &Batch{
+		IndexOps:    make(map[string]Document),
+		InternalOps: make(map[string][]byte),
+	}
+}
+
+func (b *Batch) Update(doc Document) {
+	b.IndexOps[doc.ID()] = doc
+}
+
+func (b *Batch) Delete(id string) {
+	b.IndexOps[id] = nil
+}
+
+func (b *Batch) SetInternal(key, val []byte) {
+	b.InternalOps[string(key)] = val
+}
+
+func (b *Batch) DeleteInternal(key []byte) {
+	b.InternalOps[string(key)] = nil
+}
+
+func (b *Batch) SetPersistedCallback(f BatchCallback) {
+	b.persistedCallback = f
+}
+
+func (b *Batch) PersistedCallback() BatchCallback {
+	return b.persistedCallback
+}
+
+func (b *Batch) String() string {
+	rv := fmt.Sprintf("Batch (%d ops, %d internal ops)\n", len(b.IndexOps), len(b.InternalOps))
+	for k, v := range b.IndexOps {
+		if v != nil {
+			rv += fmt.Sprintf("\tINDEX - '%s'\n", k)
+		} else {
+			rv += fmt.Sprintf("\tDELETE - '%s'\n", k)
+		}
+	}
+	for k, v := range b.InternalOps {
+		if v != nil {
+			rv += fmt.Sprintf("\tSET INTERNAL - '%s'\n", k)
+		} else {
+			rv += fmt.Sprintf("\tDELETE INTERNAL - '%s'\n", k)
+		}
+	}
+	return rv
+}
+
+func (b *Batch) Reset() {
+	b.IndexOps = make(map[string]Document)
+	b.InternalOps = make(map[string][]byte)
+	b.persistedCallback = nil
+}
+
+func (b *Batch) Merge(o *Batch) {
+	for k, v := range o.IndexOps {
+		b.IndexOps[k] = v
+	}
+	for k, v := range o.InternalOps {
+		b.InternalOps[k] = v
+	}
+}
+
+func (b *Batch) TotalDocSize() int {
+	var s int
+	for k, v := range b.IndexOps {
+		if v != nil {
+			s += v.Size() + sizeOfString
+		}
+		s += len(k)
+	}
+	return s
+}
--- a/vendor/github.com/blevesearch/bleve_index_api/document.go
+++ b/vendor/github.com/blevesearch/bleve_index_api/document.go
@ -0,0 +1,78 @@
+//  Copyright (c) 2015 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 index
+
+import "time"
+
+type Document interface {
+	ID() string
+	Size() int
+
+	VisitFields(visitor FieldVisitor)
+	VisitComposite(visitor CompositeFieldVisitor)
+	HasComposite() bool
+
+	NumPlainTextBytes() uint64
+
+	AddIDField()
+}
+
+type FieldVisitor func(Field)
+
+type Field interface {
+	Name() string
+	Value() []byte
+	ArrayPositions() []uint64
+
+	EncodedFieldType() byte
+
+	Analyze()
+
+	Options() FieldIndexingOptions
+
+	AnalyzedLength() int
+	AnalyzedTokenFrequencies() TokenFrequencies
+
+	NumPlainTextBytes() uint64
+}
+
+type CompositeFieldVisitor func(field CompositeField)
+
+type CompositeField interface {
+	Field
+
+	Compose(field string, length int, freq TokenFrequencies)
+}
+
+type TextField interface {
+	Text() string
+}
+
+type NumericField interface {
+	Number() (float64, error)
+}
+
+type DateTimeField interface {
+	DateTime() (time.Time, error)
+}
+
+type BooleanField interface {
+	Boolean() (bool, error)
+}
+
+type GeoPointField interface {
+	Lon() (float64, error)
+	Lat() (float64, error)
+}
--- a/vendor/github.com/blevesearch/bleve_index_api/freq.go
+++ b/vendor/github.com/blevesearch/bleve_index_api/freq.go
@ -0,0 +1,106 @@
+//  Copyright (c) 2020 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 index
+
+import "reflect"
+
+var reflectStaticSizeTokenLocation int
+var reflectStaticSizeTokenFreq int
+
+func init() {
+	var tl TokenLocation
+	reflectStaticSizeTokenLocation = int(reflect.TypeOf(tl).Size())
+	var tf TokenFreq
+	reflectStaticSizeTokenFreq = int(reflect.TypeOf(tf).Size())
+}
+
+// TokenLocation represents one occurrence of a term at a particular location in
+// a field. Start, End and Position have the same meaning as in analysis.Token.
+// Field and ArrayPositions identify the field value in the source document.
+// See document.Field for details.
+type TokenLocation struct {
+	Field          string
+	ArrayPositions []uint64
+	Start          int
+	End            int
+	Position       int
+}
+
+func (tl *TokenLocation) Size() int {
+	rv := reflectStaticSizeTokenLocation
+	rv += len(tl.ArrayPositions) * sizeOfUint64
+	return rv
+}
+
+// TokenFreq represents all the occurrences of a term in all fields of a
+// document.
+type TokenFreq struct {
+	Term      []byte
+	Locations []*TokenLocation
+	frequency int
+}
+
+func (tf *TokenFreq) Size() int {
+	rv := reflectStaticSizeTokenFreq
+	rv += len(tf.Term)
+	for _, loc := range tf.Locations {
+		rv += loc.Size()
+	}
+	return rv
+}
+
+func (tf *TokenFreq) Frequency() int {
+	return tf.frequency
+}
+
+func (tf *TokenFreq) SetFrequency(frequency int) {
+	tf.frequency = frequency
+}
+
+// TokenFrequencies maps document terms to their combined frequencies from all
+// fields.
+type TokenFrequencies map[string]*TokenFreq
+
+func (tfs TokenFrequencies) Size() int {
+	rv := sizeOfMap
+	rv += len(tfs) * (sizeOfString + sizeOfPtr)
+	for k, v := range tfs {
+		rv += len(k)
+		rv += v.Size()
+	}
+	return rv
+}
+
+func (tfs TokenFrequencies) MergeAll(remoteField string, other TokenFrequencies) {
+	// walk the new token frequencies
+	for tfk, tf := range other {
+		// set the remoteField value in incoming token freqs
+		for _, l := range tf.Locations {
+			l.Field = remoteField
+		}
+		existingTf, exists := tfs[tfk]
+		if exists {
+			existingTf.Locations = append(existingTf.Locations, tf.Locations...)
+			existingTf.frequency += tf.frequency
+		} else {
+			tfs[tfk] = &TokenFreq{
+				Term:      tf.Term,
+				frequency: tf.frequency,
+				Locations: make([]*TokenLocation, len(tf.Locations)),
+			}
+			copy(tfs[tfk].Locations, tf.Locations)
+		}
+	}
+}
--- a/vendor/github.com/blevesearch/bleve_index_api/go.mod
+++ b/vendor/github.com/blevesearch/bleve_index_api/go.mod
@ -0,0 +1,3 @@
+module github.com/blevesearch/bleve_index_api
+
+go 1.13
--- a/vendor/github.com/blevesearch/bleve_index_api/go.sum
+++ b/vendor/github.com/blevesearch/bleve_index_api/go.sum
--- a/vendor/github.com/blevesearch/bleve_index_api/index.go
+++ b/vendor/github.com/blevesearch/bleve_index_api/index.go
@ -0,0 +1,212 @@
+//  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 index
+
+import (
+	"bytes"
+	"reflect"
+)
+
+var reflectStaticSizeTermFieldDoc int
+var reflectStaticSizeTermFieldVector int
+
+func init() {
+	var tfd TermFieldDoc
+	reflectStaticSizeTermFieldDoc = int(reflect.TypeOf(tfd).Size())
+	var tfv TermFieldVector
+	reflectStaticSizeTermFieldVector = int(reflect.TypeOf(tfv).Size())
+}
+
+type Index interface {
+	Open() error
+	Close() error
+
+	Update(doc Document) error
+	Delete(id string) error
+	Batch(batch *Batch) error
+
+	SetInternal(key, val []byte) error
+	DeleteInternal(key []byte) error
+
+	// Reader returns a low-level accessor on the index data. Close it to
+	// release associated resources.
+	Reader() (IndexReader, error)
+
+	StatsMap() map[string]interface{}
+}
+
+type IndexReader interface {
+	TermFieldReader(term []byte, field string, includeFreq, includeNorm, includeTermVectors bool) (TermFieldReader, error)
+
+	// DocIDReader returns an iterator over all doc ids
+	// The caller must close returned instance to release associated resources.
+	DocIDReaderAll() (DocIDReader, error)
+
+	DocIDReaderOnly(ids []string) (DocIDReader, error)
+
+	FieldDict(field string) (FieldDict, error)
+
+	// FieldDictRange is currently defined to include the start and end terms
+	FieldDictRange(field string, startTerm []byte, endTerm []byte) (FieldDict, error)
+	FieldDictPrefix(field string, termPrefix []byte) (FieldDict, error)
+
+	Document(id string) (Document, error)
+
+	DocValueReader(fields []string) (DocValueReader, error)
+
+	Fields() ([]string, error)
+
+	GetInternal(key []byte) ([]byte, error)
+
+	DocCount() (uint64, error)
+
+	ExternalID(id IndexInternalID) (string, error)
+	InternalID(id string) (IndexInternalID, error)
+
+	Close() error
+}
+
+type IndexReaderRegexp interface {
+	FieldDictRegexp(field string, regex string) (FieldDict, error)
+}
+
+type IndexReaderFuzzy interface {
+	FieldDictFuzzy(field string, term string, fuzziness int, prefix string) (FieldDict, error)
+}
+
+type IndexReaderContains interface {
+	FieldDictContains(field string) (FieldDictContains, error)
+}
+
+type TermFieldVector struct {
+	Field          string
+	ArrayPositions []uint64
+	Pos            uint64
+	Start          uint64
+	End            uint64
+}
+
+func (tfv *TermFieldVector) Size() int {
+	return reflectStaticSizeTermFieldVector + sizeOfPtr +
+		len(tfv.Field) + len(tfv.ArrayPositions)*sizeOfUint64
+}
+
+// IndexInternalID is an opaque document identifier interal to the index impl
+type IndexInternalID []byte
+
+func (id IndexInternalID) Equals(other IndexInternalID) bool {
+	return id.Compare(other) == 0
+}
+
+func (id IndexInternalID) Compare(other IndexInternalID) int {
+	return bytes.Compare(id, other)
+}
+
+type TermFieldDoc struct {
+	Term    string
+	ID      IndexInternalID
+	Freq    uint64
+	Norm    float64
+	Vectors []*TermFieldVector
+}
+
+func (tfd *TermFieldDoc) Size() int {
+	sizeInBytes := reflectStaticSizeTermFieldDoc + sizeOfPtr +
+		len(tfd.Term) + len(tfd.ID)
+
+	for _, entry := range tfd.Vectors {
+		sizeInBytes += entry.Size()
+	}
+
+	return sizeInBytes
+}
+
+// Reset allows an already allocated TermFieldDoc to be reused
+func (tfd *TermFieldDoc) Reset() *TermFieldDoc {
+	// remember the []byte used for the ID
+	id := tfd.ID
+	vectors := tfd.Vectors
+	// idiom to copy over from empty TermFieldDoc (0 allocations)
+	*tfd = TermFieldDoc{}
+	// reuse the []byte already allocated (and reset len to 0)
+	tfd.ID = id[:0]
+	tfd.Vectors = vectors[:0]
+	return tfd
+}
+
+// TermFieldReader is the interface exposing the enumeration of documents
+// containing a given term in a given field. Documents are returned in byte
+// lexicographic order over their identifiers.
+type TermFieldReader interface {
+	// Next returns the next document containing the term in this field, or nil
+	// when it reaches the end of the enumeration.  The preAlloced TermFieldDoc
+	// is optional, and when non-nil, will be used instead of allocating memory.
+	Next(preAlloced *TermFieldDoc) (*TermFieldDoc, error)
+
+	// Advance resets the enumeration at specified document or its immediate
+	// follower.
+	Advance(ID IndexInternalID, preAlloced *TermFieldDoc) (*TermFieldDoc, error)
+
+	// Count returns the number of documents contains the term in this field.
+	Count() uint64
+	Close() error
+
+	Size() int
+}
+
+type DictEntry struct {
+	Term  string
+	Count uint64
+}
+
+type FieldDict interface {
+	Next() (*DictEntry, error)
+	Close() error
+}
+
+type FieldDictContains interface {
+	Contains(key []byte) (bool, error)
+}
+
+// DocIDReader is the interface exposing enumeration of documents identifiers.
+// Close the reader to release associated resources.
+type DocIDReader interface {
+	// Next returns the next document internal identifier in the natural
+	// index order, nil when the end of the sequence is reached.
+	Next() (IndexInternalID, error)
+
+	// Advance resets the iteration to the first internal identifier greater than
+	// or equal to ID. If ID is smaller than the start of the range, the iteration
+	// will start there instead. If ID is greater than or equal to the end of
+	// the range, Next() call will return io.EOF.
+	Advance(ID IndexInternalID) (IndexInternalID, error)
+
+	Size() int
+
+	Close() error
+}
+
+type DocValueVisitor func(field string, term []byte)
+
+type DocValueReader interface {
+	VisitDocValues(id IndexInternalID, visitor DocValueVisitor) error
+}
+
+// IndexBuilder is an interface supported by some index schemes
+// to allow direct write-only index building
+type IndexBuilder interface {
+	Index(doc Document) error
+	Close() error
+}
--- a/vendor/github.com/blevesearch/bleve_index_api/indexing_options.go
+++ b/vendor/github.com/blevesearch/bleve_index_api/indexing_options.go
@ -0,0 +1,77 @@
+//  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 index
+
+type FieldIndexingOptions int
+
+const (
+	IndexField FieldIndexingOptions = 1 << iota
+	StoreField
+	IncludeTermVectors
+	DocValues
+	SkipFreqNorm
+)
+
+func (o FieldIndexingOptions) IsIndexed() bool {
+	return o&IndexField != 0
+}
+
+func (o FieldIndexingOptions) IsStored() bool {
+	return o&StoreField != 0
+}
+
+func (o FieldIndexingOptions) IncludeTermVectors() bool {
+	return o&IncludeTermVectors != 0
+}
+
+func (o FieldIndexingOptions) IncludeDocValues() bool {
+	return o&DocValues != 0
+}
+
+func (o FieldIndexingOptions) SkipFreqNorm() bool {
+	return o&SkipFreqNorm != 0
+}
+
+func (o FieldIndexingOptions) String() string {
+	rv := ""
+	if o.IsIndexed() {
+		rv += "INDEXED"
+	}
+	if o.IsStored() {
+		if rv != "" {
+			rv += ", "
+		}
+		rv += "STORE"
+	}
+	if o.IncludeTermVectors() {
+		if rv != "" {
+			rv += ", "
+		}
+		rv += "TV"
+	}
+	if o.IncludeDocValues() {
+		if rv != "" {
+			rv += ", "
+		}
+		rv += "DV"
+	}
+	if !o.SkipFreqNorm() {
+		if rv != "" {
+			rv += ", "
+		}
+		rv += "FN"
+	}
+	return rv
+}
--- a/vendor/github.com/blevesearch/bleve_index_api/optimize.go
+++ b/vendor/github.com/blevesearch/bleve_index_api/optimize.go
@ -0,0 +1,39 @@
+//  Copyright (c) 2020 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 index
+
+// Optimizable represents an optional interface that implementable by
+// optimizable resources (e.g., TermFieldReaders, Searchers).  These
+// optimizable resources are provided the same OptimizableContext
+// instance, so that they can coordinate via dynamic interface
+// casting.
+type Optimizable interface {
+	Optimize(kind string, octx OptimizableContext) (OptimizableContext, error)
+}
+
+// Represents a result of optimization -- see the Finish() method.
+type Optimized interface{}
+
+type OptimizableContext interface {
+	// Once all the optimzable resources have been provided the same
+	// OptimizableContext instance, the optimization preparations are
+	// finished or completed via the Finish() method.
+	//
+	// Depending on the optimization being performed, the Finish()
+	// method might return a non-nil Optimized instance.  For example,
+	// the Optimized instance might represent an optimized
+	// TermFieldReader instance.
+	Finish() (Optimized, error)
+}
--- a/vendor/github.com/blevesearch/bleve_index_api/sizes.go
+++ b/vendor/github.com/blevesearch/bleve_index_api/sizes.go
@ -0,0 +1,35 @@
+//  Copyright (c) 2020 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 index
+
+import (
+	"reflect"
+)
+
+func init() {
+	var m map[int]int
+	sizeOfMap = int(reflect.TypeOf(m).Size())
+	var ptr *int
+	sizeOfPtr = int(reflect.TypeOf(ptr).Size())
+	var str string
+	sizeOfString = int(reflect.TypeOf(str).Size())
+	var u64 uint64
+	sizeOfUint64 = int(reflect.TypeOf(u64).Size())
+}
+
+var sizeOfMap int
+var sizeOfPtr int
+var sizeOfString int
+var sizeOfUint64 int