seba-365 - implemented dep
Change-Id: Ia6226d50e7615935a0c8876809a687427ff88c22
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/extjson_reader.go b/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/extjson_reader.go
new file mode 100644
index 0000000..eebd56e
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/extjson_reader.go
@@ -0,0 +1,659 @@
+// Copyright (C) MongoDB, Inc. 2017-present.
+//
+// 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
+
+package bsonrw
+
+import (
+ "fmt"
+ "io"
+ "sync"
+
+ "github.com/mongodb/mongo-go-driver/bson/bsontype"
+ "github.com/mongodb/mongo-go-driver/bson/primitive"
+)
+
+// ExtJSONValueReaderPool is a pool for ValueReaders that read ExtJSON.
+type ExtJSONValueReaderPool struct {
+ pool sync.Pool
+}
+
+// NewExtJSONValueReaderPool instantiates a new ExtJSONValueReaderPool.
+func NewExtJSONValueReaderPool() *ExtJSONValueReaderPool {
+ return &ExtJSONValueReaderPool{
+ pool: sync.Pool{
+ New: func() interface{} {
+ return new(extJSONValueReader)
+ },
+ },
+ }
+}
+
+// Get retrieves a ValueReader from the pool and uses src as the underlying ExtJSON.
+func (bvrp *ExtJSONValueReaderPool) Get(r io.Reader, canonical bool) (ValueReader, error) {
+ vr := bvrp.pool.Get().(*extJSONValueReader)
+ return vr.reset(r, canonical)
+}
+
+// Put inserts a ValueReader into the pool. If the ValueReader is not a ExtJSON ValueReader nothing
+// is inserted into the pool and ok will be false.
+func (bvrp *ExtJSONValueReaderPool) Put(vr ValueReader) (ok bool) {
+ bvr, ok := vr.(*extJSONValueReader)
+ if !ok {
+ return false
+ }
+
+ bvr, _ = bvr.reset(nil, false)
+ bvrp.pool.Put(bvr)
+ return true
+}
+
+type ejvrState struct {
+ mode mode
+ vType bsontype.Type
+ depth int
+}
+
+// extJSONValueReader is for reading extended JSON.
+type extJSONValueReader struct {
+ p *extJSONParser
+
+ stack []ejvrState
+ frame int
+}
+
+// NewExtJSONValueReader creates a new ValueReader from a given io.Reader
+// It will interpret the JSON of r as canonical or relaxed according to the
+// given canonical flag
+func NewExtJSONValueReader(r io.Reader, canonical bool) (ValueReader, error) {
+ return newExtJSONValueReader(r, canonical)
+}
+
+func newExtJSONValueReader(r io.Reader, canonical bool) (*extJSONValueReader, error) {
+ ejvr := new(extJSONValueReader)
+ return ejvr.reset(r, canonical)
+}
+
+func (ejvr *extJSONValueReader) reset(r io.Reader, canonical bool) (*extJSONValueReader, error) {
+ p := newExtJSONParser(r, canonical)
+ typ, err := p.peekType()
+
+ if err != nil {
+ return nil, ErrInvalidJSON
+ }
+
+ var m mode
+ switch typ {
+ case bsontype.EmbeddedDocument:
+ m = mTopLevel
+ case bsontype.Array:
+ m = mArray
+ default:
+ m = mValue
+ }
+
+ stack := make([]ejvrState, 1, 5)
+ stack[0] = ejvrState{
+ mode: m,
+ vType: typ,
+ }
+ return &extJSONValueReader{
+ p: p,
+ stack: stack,
+ }, nil
+}
+
+func (ejvr *extJSONValueReader) advanceFrame() {
+ if ejvr.frame+1 >= len(ejvr.stack) { // We need to grow the stack
+ length := len(ejvr.stack)
+ if length+1 >= cap(ejvr.stack) {
+ // double it
+ buf := make([]ejvrState, 2*cap(ejvr.stack)+1)
+ copy(buf, ejvr.stack)
+ ejvr.stack = buf
+ }
+ ejvr.stack = ejvr.stack[:length+1]
+ }
+ ejvr.frame++
+
+ // Clean the stack
+ ejvr.stack[ejvr.frame].mode = 0
+ ejvr.stack[ejvr.frame].vType = 0
+ ejvr.stack[ejvr.frame].depth = 0
+}
+
+func (ejvr *extJSONValueReader) pushDocument() {
+ ejvr.advanceFrame()
+
+ ejvr.stack[ejvr.frame].mode = mDocument
+ ejvr.stack[ejvr.frame].depth = ejvr.p.depth
+}
+
+func (ejvr *extJSONValueReader) pushCodeWithScope() {
+ ejvr.advanceFrame()
+
+ ejvr.stack[ejvr.frame].mode = mCodeWithScope
+}
+
+func (ejvr *extJSONValueReader) pushArray() {
+ ejvr.advanceFrame()
+
+ ejvr.stack[ejvr.frame].mode = mArray
+}
+
+func (ejvr *extJSONValueReader) push(m mode, t bsontype.Type) {
+ ejvr.advanceFrame()
+
+ ejvr.stack[ejvr.frame].mode = m
+ ejvr.stack[ejvr.frame].vType = t
+}
+
+func (ejvr *extJSONValueReader) pop() {
+ switch ejvr.stack[ejvr.frame].mode {
+ case mElement, mValue:
+ ejvr.frame--
+ case mDocument, mArray, mCodeWithScope:
+ ejvr.frame -= 2 // we pop twice to jump over the vrElement: vrDocument -> vrElement -> vrDocument/TopLevel/etc...
+ }
+}
+
+func (ejvr *extJSONValueReader) skipDocument() error {
+ // read entire document until ErrEOD (using readKey and readValue)
+ _, typ, err := ejvr.p.readKey()
+ for err == nil {
+ _, err = ejvr.p.readValue(typ)
+ if err != nil {
+ break
+ }
+
+ _, typ, err = ejvr.p.readKey()
+ }
+
+ return err
+}
+
+func (ejvr *extJSONValueReader) skipArray() error {
+ // read entire array until ErrEOA (using peekType)
+ _, err := ejvr.p.peekType()
+ for err == nil {
+ _, err = ejvr.p.peekType()
+ }
+
+ return err
+}
+
+func (ejvr *extJSONValueReader) invalidTransitionErr(destination mode, name string, modes []mode) error {
+ te := TransitionError{
+ name: name,
+ current: ejvr.stack[ejvr.frame].mode,
+ destination: destination,
+ modes: modes,
+ action: "read",
+ }
+ if ejvr.frame != 0 {
+ te.parent = ejvr.stack[ejvr.frame-1].mode
+ }
+ return te
+}
+
+func (ejvr *extJSONValueReader) typeError(t bsontype.Type) error {
+ return fmt.Errorf("positioned on %s, but attempted to read %s", ejvr.stack[ejvr.frame].vType, t)
+}
+
+func (ejvr *extJSONValueReader) ensureElementValue(t bsontype.Type, destination mode, callerName string, addModes ...mode) error {
+ switch ejvr.stack[ejvr.frame].mode {
+ case mElement, mValue:
+ if ejvr.stack[ejvr.frame].vType != t {
+ return ejvr.typeError(t)
+ }
+ default:
+ modes := []mode{mElement, mValue}
+ if addModes != nil {
+ modes = append(modes, addModes...)
+ }
+ return ejvr.invalidTransitionErr(destination, callerName, modes)
+ }
+
+ return nil
+}
+
+func (ejvr *extJSONValueReader) Type() bsontype.Type {
+ return ejvr.stack[ejvr.frame].vType
+}
+
+func (ejvr *extJSONValueReader) Skip() error {
+ switch ejvr.stack[ejvr.frame].mode {
+ case mElement, mValue:
+ default:
+ return ejvr.invalidTransitionErr(0, "Skip", []mode{mElement, mValue})
+ }
+
+ defer ejvr.pop()
+
+ t := ejvr.stack[ejvr.frame].vType
+ switch t {
+ case bsontype.Array:
+ // read entire array until ErrEOA
+ err := ejvr.skipArray()
+ if err != ErrEOA {
+ return err
+ }
+ case bsontype.EmbeddedDocument:
+ // read entire doc until ErrEOD
+ err := ejvr.skipDocument()
+ if err != ErrEOD {
+ return err
+ }
+ case bsontype.CodeWithScope:
+ // read the code portion and set up parser in document mode
+ _, err := ejvr.p.readValue(t)
+ if err != nil {
+ return err
+ }
+
+ // read until ErrEOD
+ err = ejvr.skipDocument()
+ if err != ErrEOD {
+ return err
+ }
+ default:
+ _, err := ejvr.p.readValue(t)
+ if err != nil {
+ return err
+ }
+ }
+
+ return nil
+}
+
+func (ejvr *extJSONValueReader) ReadArray() (ArrayReader, error) {
+ switch ejvr.stack[ejvr.frame].mode {
+ case mTopLevel: // allow reading array from top level
+ case mArray:
+ return ejvr, nil
+ default:
+ if err := ejvr.ensureElementValue(bsontype.Array, mArray, "ReadArray", mTopLevel, mArray); err != nil {
+ return nil, err
+ }
+ }
+
+ ejvr.pushArray()
+
+ return ejvr, nil
+}
+
+func (ejvr *extJSONValueReader) ReadBinary() (b []byte, btype byte, err error) {
+ if err := ejvr.ensureElementValue(bsontype.Binary, 0, "ReadBinary"); err != nil {
+ return nil, 0, err
+ }
+
+ v, err := ejvr.p.readValue(bsontype.Binary)
+ if err != nil {
+ return nil, 0, err
+ }
+
+ b, btype, err = v.parseBinary()
+
+ ejvr.pop()
+ return b, btype, err
+}
+
+func (ejvr *extJSONValueReader) ReadBoolean() (bool, error) {
+ if err := ejvr.ensureElementValue(bsontype.Boolean, 0, "ReadBoolean"); err != nil {
+ return false, err
+ }
+
+ v, err := ejvr.p.readValue(bsontype.Boolean)
+ if err != nil {
+ return false, err
+ }
+
+ if v.t != bsontype.Boolean {
+ return false, fmt.Errorf("expected type bool, but got type %s", v.t)
+ }
+
+ ejvr.pop()
+ return v.v.(bool), nil
+}
+
+func (ejvr *extJSONValueReader) ReadDocument() (DocumentReader, error) {
+ switch ejvr.stack[ejvr.frame].mode {
+ case mTopLevel:
+ return ejvr, nil
+ case mElement, mValue:
+ if ejvr.stack[ejvr.frame].vType != bsontype.EmbeddedDocument {
+ return nil, ejvr.typeError(bsontype.EmbeddedDocument)
+ }
+
+ ejvr.pushDocument()
+ return ejvr, nil
+ default:
+ return nil, ejvr.invalidTransitionErr(mDocument, "ReadDocument", []mode{mTopLevel, mElement, mValue})
+ }
+}
+
+func (ejvr *extJSONValueReader) ReadCodeWithScope() (code string, dr DocumentReader, err error) {
+ if err = ejvr.ensureElementValue(bsontype.CodeWithScope, 0, "ReadCodeWithScope"); err != nil {
+ return "", nil, err
+ }
+
+ v, err := ejvr.p.readValue(bsontype.CodeWithScope)
+ if err != nil {
+ return "", nil, err
+ }
+
+ code, err = v.parseJavascript()
+
+ ejvr.pushCodeWithScope()
+ return code, ejvr, err
+}
+
+func (ejvr *extJSONValueReader) ReadDBPointer() (ns string, oid primitive.ObjectID, err error) {
+ if err = ejvr.ensureElementValue(bsontype.DBPointer, 0, "ReadDBPointer"); err != nil {
+ return "", primitive.NilObjectID, err
+ }
+
+ v, err := ejvr.p.readValue(bsontype.DBPointer)
+ if err != nil {
+ return "", primitive.NilObjectID, err
+ }
+
+ ns, oid, err = v.parseDBPointer()
+
+ ejvr.pop()
+ return ns, oid, err
+}
+
+func (ejvr *extJSONValueReader) ReadDateTime() (int64, error) {
+ if err := ejvr.ensureElementValue(bsontype.DateTime, 0, "ReadDateTime"); err != nil {
+ return 0, err
+ }
+
+ v, err := ejvr.p.readValue(bsontype.DateTime)
+ if err != nil {
+ return 0, err
+ }
+
+ d, err := v.parseDateTime()
+
+ ejvr.pop()
+ return d, err
+}
+
+func (ejvr *extJSONValueReader) ReadDecimal128() (primitive.Decimal128, error) {
+ if err := ejvr.ensureElementValue(bsontype.Decimal128, 0, "ReadDecimal128"); err != nil {
+ return primitive.Decimal128{}, err
+ }
+
+ v, err := ejvr.p.readValue(bsontype.Decimal128)
+ if err != nil {
+ return primitive.Decimal128{}, err
+ }
+
+ d, err := v.parseDecimal128()
+
+ ejvr.pop()
+ return d, err
+}
+
+func (ejvr *extJSONValueReader) ReadDouble() (float64, error) {
+ if err := ejvr.ensureElementValue(bsontype.Double, 0, "ReadDouble"); err != nil {
+ return 0, err
+ }
+
+ v, err := ejvr.p.readValue(bsontype.Double)
+ if err != nil {
+ return 0, err
+ }
+
+ d, err := v.parseDouble()
+
+ ejvr.pop()
+ return d, err
+}
+
+func (ejvr *extJSONValueReader) ReadInt32() (int32, error) {
+ if err := ejvr.ensureElementValue(bsontype.Int32, 0, "ReadInt32"); err != nil {
+ return 0, err
+ }
+
+ v, err := ejvr.p.readValue(bsontype.Int32)
+ if err != nil {
+ return 0, err
+ }
+
+ i, err := v.parseInt32()
+
+ ejvr.pop()
+ return i, err
+}
+
+func (ejvr *extJSONValueReader) ReadInt64() (int64, error) {
+ if err := ejvr.ensureElementValue(bsontype.Int64, 0, "ReadInt64"); err != nil {
+ return 0, err
+ }
+
+ v, err := ejvr.p.readValue(bsontype.Int64)
+ if err != nil {
+ return 0, err
+ }
+
+ i, err := v.parseInt64()
+
+ ejvr.pop()
+ return i, err
+}
+
+func (ejvr *extJSONValueReader) ReadJavascript() (code string, err error) {
+ if err = ejvr.ensureElementValue(bsontype.JavaScript, 0, "ReadJavascript"); err != nil {
+ return "", err
+ }
+
+ v, err := ejvr.p.readValue(bsontype.JavaScript)
+ if err != nil {
+ return "", err
+ }
+
+ code, err = v.parseJavascript()
+
+ ejvr.pop()
+ return code, err
+}
+
+func (ejvr *extJSONValueReader) ReadMaxKey() error {
+ if err := ejvr.ensureElementValue(bsontype.MaxKey, 0, "ReadMaxKey"); err != nil {
+ return err
+ }
+
+ v, err := ejvr.p.readValue(bsontype.MaxKey)
+ if err != nil {
+ return err
+ }
+
+ err = v.parseMinMaxKey("max")
+
+ ejvr.pop()
+ return err
+}
+
+func (ejvr *extJSONValueReader) ReadMinKey() error {
+ if err := ejvr.ensureElementValue(bsontype.MinKey, 0, "ReadMinKey"); err != nil {
+ return err
+ }
+
+ v, err := ejvr.p.readValue(bsontype.MinKey)
+ if err != nil {
+ return err
+ }
+
+ err = v.parseMinMaxKey("min")
+
+ ejvr.pop()
+ return err
+}
+
+func (ejvr *extJSONValueReader) ReadNull() error {
+ if err := ejvr.ensureElementValue(bsontype.Null, 0, "ReadNull"); err != nil {
+ return err
+ }
+
+ v, err := ejvr.p.readValue(bsontype.Null)
+ if err != nil {
+ return err
+ }
+
+ if v.t != bsontype.Null {
+ return fmt.Errorf("expected type null but got type %s", v.t)
+ }
+
+ ejvr.pop()
+ return nil
+}
+
+func (ejvr *extJSONValueReader) ReadObjectID() (primitive.ObjectID, error) {
+ if err := ejvr.ensureElementValue(bsontype.ObjectID, 0, "ReadObjectID"); err != nil {
+ return primitive.ObjectID{}, err
+ }
+
+ v, err := ejvr.p.readValue(bsontype.ObjectID)
+ if err != nil {
+ return primitive.ObjectID{}, err
+ }
+
+ oid, err := v.parseObjectID()
+
+ ejvr.pop()
+ return oid, err
+}
+
+func (ejvr *extJSONValueReader) ReadRegex() (pattern string, options string, err error) {
+ if err = ejvr.ensureElementValue(bsontype.Regex, 0, "ReadRegex"); err != nil {
+ return "", "", err
+ }
+
+ v, err := ejvr.p.readValue(bsontype.Regex)
+ if err != nil {
+ return "", "", err
+ }
+
+ pattern, options, err = v.parseRegex()
+
+ ejvr.pop()
+ return pattern, options, err
+}
+
+func (ejvr *extJSONValueReader) ReadString() (string, error) {
+ if err := ejvr.ensureElementValue(bsontype.String, 0, "ReadString"); err != nil {
+ return "", err
+ }
+
+ v, err := ejvr.p.readValue(bsontype.String)
+ if err != nil {
+ return "", err
+ }
+
+ if v.t != bsontype.String {
+ return "", fmt.Errorf("expected type string but got type %s", v.t)
+ }
+
+ ejvr.pop()
+ return v.v.(string), nil
+}
+
+func (ejvr *extJSONValueReader) ReadSymbol() (symbol string, err error) {
+ if err = ejvr.ensureElementValue(bsontype.Symbol, 0, "ReadSymbol"); err != nil {
+ return "", err
+ }
+
+ v, err := ejvr.p.readValue(bsontype.Symbol)
+ if err != nil {
+ return "", err
+ }
+
+ symbol, err = v.parseSymbol()
+
+ ejvr.pop()
+ return symbol, err
+}
+
+func (ejvr *extJSONValueReader) ReadTimestamp() (t uint32, i uint32, err error) {
+ if err = ejvr.ensureElementValue(bsontype.Timestamp, 0, "ReadTimestamp"); err != nil {
+ return 0, 0, err
+ }
+
+ v, err := ejvr.p.readValue(bsontype.Timestamp)
+ if err != nil {
+ return 0, 0, err
+ }
+
+ t, i, err = v.parseTimestamp()
+
+ ejvr.pop()
+ return t, i, err
+}
+
+func (ejvr *extJSONValueReader) ReadUndefined() error {
+ if err := ejvr.ensureElementValue(bsontype.Undefined, 0, "ReadUndefined"); err != nil {
+ return err
+ }
+
+ v, err := ejvr.p.readValue(bsontype.Undefined)
+ if err != nil {
+ return err
+ }
+
+ err = v.parseUndefined()
+
+ ejvr.pop()
+ return err
+}
+
+func (ejvr *extJSONValueReader) ReadElement() (string, ValueReader, error) {
+ switch ejvr.stack[ejvr.frame].mode {
+ case mTopLevel, mDocument, mCodeWithScope:
+ default:
+ return "", nil, ejvr.invalidTransitionErr(mElement, "ReadElement", []mode{mTopLevel, mDocument, mCodeWithScope})
+ }
+
+ name, t, err := ejvr.p.readKey()
+
+ if err != nil {
+ if err == ErrEOD {
+ if ejvr.stack[ejvr.frame].mode == mCodeWithScope {
+ _, err := ejvr.p.peekType()
+ if err != nil {
+ return "", nil, err
+ }
+ }
+
+ ejvr.pop()
+ }
+
+ return "", nil, err
+ }
+
+ ejvr.push(mElement, t)
+ return name, ejvr, nil
+}
+
+func (ejvr *extJSONValueReader) ReadValue() (ValueReader, error) {
+ switch ejvr.stack[ejvr.frame].mode {
+ case mArray:
+ default:
+ return nil, ejvr.invalidTransitionErr(mValue, "ReadValue", []mode{mArray})
+ }
+
+ t, err := ejvr.p.peekType()
+ if err != nil {
+ if err == ErrEOA {
+ ejvr.pop()
+ }
+
+ return nil, err
+ }
+
+ ejvr.push(mValue, t)
+ return ejvr, nil
+}