seba-365 - implemented dep
Change-Id: Ia6226d50e7615935a0c8876809a687427ff88c22
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/bson.go b/vendor/github.com/mongodb/mongo-go-driver/bson/bson.go
new file mode 100644
index 0000000..44cdec8
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/bson.go
@@ -0,0 +1,60 @@
+// 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
+//
+// Based on gopkg.in/mgo.v2/bson by Gustavo Niemeyer
+// See THIRD-PARTY-NOTICES for original license terms.
+
+// +build go1.9
+
+package bson
+
+import (
+ "github.com/mongodb/mongo-go-driver/bson/primitive"
+)
+
+// Zeroer allows custom struct types to implement a report of zero
+// state. All struct types that don't implement Zeroer or where IsZero
+// returns false are considered to be not zero.
+type Zeroer interface {
+ IsZero() bool
+}
+
+// D represents a BSON Document. This type can be used to represent BSON in a concise and readable
+// manner. It should generally be used when serializing to BSON. For deserializing, the Raw or
+// Document types should be used.
+//
+// Example usage:
+//
+// bson.D{{"foo", "bar"}, {"hello", "world"}, {"pi", 3.14159}}
+//
+// This type should be used in situations where order matters, such as MongoDB commands. If the
+// order is not important, a map is more comfortable and concise.
+type D = primitive.D
+
+// E represents a BSON element for a D. It is usually used inside a D.
+type E = primitive.E
+
+// M is an unordered, concise representation of a BSON Document. It should generally be used to
+// serialize BSON when the order of the elements of a BSON document do not matter. If the element
+// order matters, use a D instead.
+//
+// Example usage:
+//
+// bson.M{"foo": "bar", "hello": "world", "pi": 3.14159}
+//
+// This type is handled in the encoders as a regular map[string]interface{}. The elements will be
+// serialized in an undefined, random order, and the order will be different each time.
+type M = primitive.M
+
+// An A represents a BSON array. This type can be used to represent a BSON array in a concise and
+// readable manner. It should generally be used when serializing to BSON. For deserializing, the
+// RawArray or Array types should be used.
+//
+// Example usage:
+//
+// bson.A{"bar", "world", 3.14159, bson.D{{"qux", 12345}}}
+//
+type A = primitive.A
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/bson_1_8.go b/vendor/github.com/mongodb/mongo-go-driver/bson/bson_1_8.go
new file mode 100644
index 0000000..beac40b
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/bson_1_8.go
@@ -0,0 +1,91 @@
+// 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
+
+// +build !go1.9
+
+package bson
+
+import (
+ "math"
+ "strconv"
+ "strings"
+)
+
+// Zeroer allows custom struct types to implement a report of zero
+// state. All struct types that don't implement Zeroer or where IsZero
+// returns false are considered to be not zero.
+type Zeroer interface {
+ IsZero() bool
+}
+
+// D represents a BSON Document. This type can be used to represent BSON in a concise and readable
+// manner. It should generally be used when serializing to BSON. For deserializing, the Raw or
+// Document types should be used.
+//
+// Example usage:
+//
+// primitive.D{{"foo", "bar"}, {"hello", "world"}, {"pi", 3.14159}}
+//
+// This type should be used in situations where order matters, such as MongoDB commands. If the
+// order is not important, a map is more comfortable and concise.
+type D []E
+
+// Map creates a map from the elements of the D.
+func (d D) Map() M {
+ m := make(M, len(d))
+ for _, e := range d {
+ m[e.Key] = e.Value
+ }
+ return m
+}
+
+// E represents a BSON element for a D. It is usually used inside a D.
+type E struct {
+ Key string
+ Value interface{}
+}
+
+// M is an unordered, concise representation of a BSON Document. It should generally be used to
+// serialize BSON when the order of the elements of a BSON document do not matter. If the element
+// order matters, use a D instead.
+//
+// Example usage:
+//
+// primitive.M{"foo": "bar", "hello": "world", "pi": 3.14159}
+//
+// This type is handled in the encoders as a regular map[string]interface{}. The elements will be
+// serialized in an undefined, random order, and the order will be different each time.
+type M map[string]interface{}
+
+// An A represents a BSON array. This type can be used to represent a BSON array in a concise and
+// readable manner. It should generally be used when serializing to BSON. For deserializing, the
+// RawArray or Array types should be used.
+//
+// Example usage:
+//
+// primitive.A{"bar", "world", 3.14159, primitive.D{{"qux", 12345}}}
+//
+type A []interface{}
+
+func formatDouble(f float64) string {
+ var s string
+ if math.IsInf(f, 1) {
+ s = "Infinity"
+ } else if math.IsInf(f, -1) {
+ s = "-Infinity"
+ } else if math.IsNaN(f) {
+ s = "NaN"
+ } else {
+ // Print exactly one decimalType place for integers; otherwise, print as many are necessary to
+ // perfectly represent it.
+ s = strconv.FormatFloat(f, 'G', -1, 64)
+ if !strings.ContainsRune(s, '.') {
+ s += ".0"
+ }
+ }
+
+ return s
+}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/bsoncodec.go b/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/bsoncodec.go
new file mode 100644
index 0000000..4c5530c
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/bsoncodec.go
@@ -0,0 +1,163 @@
+// 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 bsoncodec
+
+import (
+ "fmt"
+ "reflect"
+ "strings"
+
+ "github.com/mongodb/mongo-go-driver/bson/bsonrw"
+ "github.com/mongodb/mongo-go-driver/bson/bsontype"
+)
+
+// Marshaler is an interface implemented by types that can marshal themselves
+// into a BSON document represented as bytes. The bytes returned must be a valid
+// BSON document if the error is nil.
+type Marshaler interface {
+ MarshalBSON() ([]byte, error)
+}
+
+// ValueMarshaler is an interface implemented by types that can marshal
+// themselves into a BSON value as bytes. The type must be the valid type for
+// the bytes returned. The bytes and byte type together must be valid if the
+// error is nil.
+type ValueMarshaler interface {
+ MarshalBSONValue() (bsontype.Type, []byte, error)
+}
+
+// Unmarshaler is an interface implemented by types that can unmarshal a BSON
+// document representation of themselves. The BSON bytes can be assumed to be
+// valid. UnmarshalBSON must copy the BSON bytes if it wishes to retain the data
+// after returning.
+type Unmarshaler interface {
+ UnmarshalBSON([]byte) error
+}
+
+// ValueUnmarshaler is an interface implemented by types that can unmarshal a
+// BSON value representaiton of themselves. The BSON bytes and type can be
+// assumed to be valid. UnmarshalBSONValue must copy the BSON value bytes if it
+// wishes to retain the data after returning.
+type ValueUnmarshaler interface {
+ UnmarshalBSONValue(bsontype.Type, []byte) error
+}
+
+// ValueEncoderError is an error returned from a ValueEncoder when the provided value can't be
+// encoded by the ValueEncoder.
+type ValueEncoderError struct {
+ Name string
+ Types []reflect.Type
+ Kinds []reflect.Kind
+ Received reflect.Value
+}
+
+func (vee ValueEncoderError) Error() string {
+ typeKinds := make([]string, 0, len(vee.Types)+len(vee.Kinds))
+ for _, t := range vee.Types {
+ typeKinds = append(typeKinds, t.String())
+ }
+ for _, k := range vee.Kinds {
+ if k == reflect.Map {
+ typeKinds = append(typeKinds, "map[string]*")
+ continue
+ }
+ typeKinds = append(typeKinds, k.String())
+ }
+ received := vee.Received.Kind().String()
+ if vee.Received.IsValid() {
+ received = vee.Received.Type().String()
+ }
+ return fmt.Sprintf("%s can only encode valid %s, but got %s", vee.Name, strings.Join(typeKinds, ", "), received)
+}
+
+// ValueDecoderError is an error returned from a ValueDecoder when the provided value can't be
+// decoded by the ValueDecoder.
+type ValueDecoderError struct {
+ Name string
+ Types []reflect.Type
+ Kinds []reflect.Kind
+ Received reflect.Value
+}
+
+func (vde ValueDecoderError) Error() string {
+ typeKinds := make([]string, 0, len(vde.Types)+len(vde.Kinds))
+ for _, t := range vde.Types {
+ typeKinds = append(typeKinds, t.String())
+ }
+ for _, k := range vde.Kinds {
+ if k == reflect.Map {
+ typeKinds = append(typeKinds, "map[string]*")
+ continue
+ }
+ typeKinds = append(typeKinds, k.String())
+ }
+ received := vde.Received.Kind().String()
+ if vde.Received.IsValid() {
+ received = vde.Received.Type().String()
+ }
+ return fmt.Sprintf("%s can only decode valid and settable %s, but got %s", vde.Name, strings.Join(typeKinds, ", "), received)
+}
+
+// EncodeContext is the contextual information required for a Codec to encode a
+// value.
+type EncodeContext struct {
+ *Registry
+ MinSize bool
+}
+
+// DecodeContext is the contextual information required for a Codec to decode a
+// value.
+type DecodeContext struct {
+ *Registry
+ Truncate bool
+ // Ancestor is the type of a containing document. This is mainly used to determine what type
+ // should be used when decoding an embedded document into an empty interface. For example, if
+ // Ancestor is a bson.M, BSON embedded document values being decoded into an empty interface
+ // will be decoded into a bson.M.
+ Ancestor reflect.Type
+}
+
+// ValueCodec is the interface that groups the methods to encode and decode
+// values.
+type ValueCodec interface {
+ ValueEncoder
+ ValueDecoder
+}
+
+// ValueEncoder is the interface implemented by types that can handle the encoding of a value.
+type ValueEncoder interface {
+ EncodeValue(EncodeContext, bsonrw.ValueWriter, reflect.Value) error
+}
+
+// ValueEncoderFunc is an adapter function that allows a function with the correct signature to be
+// used as a ValueEncoder.
+type ValueEncoderFunc func(EncodeContext, bsonrw.ValueWriter, reflect.Value) error
+
+// EncodeValue implements the ValueEncoder interface.
+func (fn ValueEncoderFunc) EncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ return fn(ec, vw, val)
+}
+
+// ValueDecoder is the interface implemented by types that can handle the decoding of a value.
+type ValueDecoder interface {
+ DecodeValue(DecodeContext, bsonrw.ValueReader, reflect.Value) error
+}
+
+// ValueDecoderFunc is an adapter function that allows a function with the correct signature to be
+// used as a ValueDecoder.
+type ValueDecoderFunc func(DecodeContext, bsonrw.ValueReader, reflect.Value) error
+
+// DecodeValue implements the ValueDecoder interface.
+func (fn ValueDecoderFunc) DecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ return fn(dc, vr, val)
+}
+
+// CodecZeroer is the interface implemented by Codecs that can also determine if
+// a value of the type that would be encoded is zero.
+type CodecZeroer interface {
+ IsTypeZero(interface{}) bool
+}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/default_value_decoders.go b/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/default_value_decoders.go
new file mode 100644
index 0000000..645f89e
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/default_value_decoders.go
@@ -0,0 +1,1014 @@
+// 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 bsoncodec
+
+import (
+ "encoding/json"
+ "errors"
+ "fmt"
+ "math"
+ "net/url"
+ "reflect"
+ "strconv"
+ "time"
+
+ "github.com/mongodb/mongo-go-driver/bson/bsonrw"
+ "github.com/mongodb/mongo-go-driver/bson/bsontype"
+ "github.com/mongodb/mongo-go-driver/bson/primitive"
+ "github.com/mongodb/mongo-go-driver/x/bsonx/bsoncore"
+)
+
+var defaultValueDecoders DefaultValueDecoders
+
+// DefaultValueDecoders is a namespace type for the default ValueDecoders used
+// when creating a registry.
+type DefaultValueDecoders struct{}
+
+// RegisterDefaultDecoders will register the decoder methods attached to DefaultValueDecoders with
+// the provided RegistryBuilder.
+//
+// There is no support for decoding map[string]interface{} becuase there is no decoder for
+// interface{}, so users must either register this decoder themselves or use the
+// EmptyInterfaceDecoder avaialble in the bson package.
+func (dvd DefaultValueDecoders) RegisterDefaultDecoders(rb *RegistryBuilder) {
+ if rb == nil {
+ panic(errors.New("argument to RegisterDefaultDecoders must not be nil"))
+ }
+
+ rb.
+ RegisterDecoder(tBinary, ValueDecoderFunc(dvd.BinaryDecodeValue)).
+ RegisterDecoder(tUndefined, ValueDecoderFunc(dvd.UndefinedDecodeValue)).
+ RegisterDecoder(tDateTime, ValueDecoderFunc(dvd.DateTimeDecodeValue)).
+ RegisterDecoder(tNull, ValueDecoderFunc(dvd.NullDecodeValue)).
+ RegisterDecoder(tRegex, ValueDecoderFunc(dvd.RegexDecodeValue)).
+ RegisterDecoder(tDBPointer, ValueDecoderFunc(dvd.DBPointerDecodeValue)).
+ RegisterDecoder(tTimestamp, ValueDecoderFunc(dvd.TimestampDecodeValue)).
+ RegisterDecoder(tMinKey, ValueDecoderFunc(dvd.MinKeyDecodeValue)).
+ RegisterDecoder(tMaxKey, ValueDecoderFunc(dvd.MaxKeyDecodeValue)).
+ RegisterDecoder(tJavaScript, ValueDecoderFunc(dvd.JavaScriptDecodeValue)).
+ RegisterDecoder(tSymbol, ValueDecoderFunc(dvd.SymbolDecodeValue)).
+ RegisterDecoder(tByteSlice, ValueDecoderFunc(dvd.ByteSliceDecodeValue)).
+ RegisterDecoder(tTime, ValueDecoderFunc(dvd.TimeDecodeValue)).
+ RegisterDecoder(tEmpty, ValueDecoderFunc(dvd.EmptyInterfaceDecodeValue)).
+ RegisterDecoder(tOID, ValueDecoderFunc(dvd.ObjectIDDecodeValue)).
+ RegisterDecoder(tDecimal, ValueDecoderFunc(dvd.Decimal128DecodeValue)).
+ RegisterDecoder(tJSONNumber, ValueDecoderFunc(dvd.JSONNumberDecodeValue)).
+ RegisterDecoder(tURL, ValueDecoderFunc(dvd.URLDecodeValue)).
+ RegisterDecoder(tValueUnmarshaler, ValueDecoderFunc(dvd.ValueUnmarshalerDecodeValue)).
+ RegisterDecoder(tUnmarshaler, ValueDecoderFunc(dvd.UnmarshalerDecodeValue)).
+ RegisterDecoder(tCoreDocument, ValueDecoderFunc(dvd.CoreDocumentDecodeValue)).
+ RegisterDecoder(tCodeWithScope, ValueDecoderFunc(dvd.CodeWithScopeDecodeValue)).
+ RegisterDefaultDecoder(reflect.Bool, ValueDecoderFunc(dvd.BooleanDecodeValue)).
+ RegisterDefaultDecoder(reflect.Int, ValueDecoderFunc(dvd.IntDecodeValue)).
+ RegisterDefaultDecoder(reflect.Int8, ValueDecoderFunc(dvd.IntDecodeValue)).
+ RegisterDefaultDecoder(reflect.Int16, ValueDecoderFunc(dvd.IntDecodeValue)).
+ RegisterDefaultDecoder(reflect.Int32, ValueDecoderFunc(dvd.IntDecodeValue)).
+ RegisterDefaultDecoder(reflect.Int64, ValueDecoderFunc(dvd.IntDecodeValue)).
+ RegisterDefaultDecoder(reflect.Uint, ValueDecoderFunc(dvd.UintDecodeValue)).
+ RegisterDefaultDecoder(reflect.Uint8, ValueDecoderFunc(dvd.UintDecodeValue)).
+ RegisterDefaultDecoder(reflect.Uint16, ValueDecoderFunc(dvd.UintDecodeValue)).
+ RegisterDefaultDecoder(reflect.Uint32, ValueDecoderFunc(dvd.UintDecodeValue)).
+ RegisterDefaultDecoder(reflect.Uint64, ValueDecoderFunc(dvd.UintDecodeValue)).
+ RegisterDefaultDecoder(reflect.Float32, ValueDecoderFunc(dvd.FloatDecodeValue)).
+ RegisterDefaultDecoder(reflect.Float64, ValueDecoderFunc(dvd.FloatDecodeValue)).
+ RegisterDefaultDecoder(reflect.Array, ValueDecoderFunc(dvd.ArrayDecodeValue)).
+ RegisterDefaultDecoder(reflect.Map, ValueDecoderFunc(dvd.MapDecodeValue)).
+ RegisterDefaultDecoder(reflect.Slice, ValueDecoderFunc(dvd.SliceDecodeValue)).
+ RegisterDefaultDecoder(reflect.String, ValueDecoderFunc(dvd.StringDecodeValue)).
+ RegisterDefaultDecoder(reflect.Struct, &StructCodec{cache: make(map[reflect.Type]*structDescription), parser: DefaultStructTagParser}).
+ RegisterDefaultDecoder(reflect.Ptr, NewPointerCodec()).
+ RegisterTypeMapEntry(bsontype.Double, tFloat64).
+ RegisterTypeMapEntry(bsontype.String, tString).
+ RegisterTypeMapEntry(bsontype.Array, tA).
+ RegisterTypeMapEntry(bsontype.Binary, tBinary).
+ RegisterTypeMapEntry(bsontype.Undefined, tUndefined).
+ RegisterTypeMapEntry(bsontype.ObjectID, tOID).
+ RegisterTypeMapEntry(bsontype.Boolean, tBool).
+ RegisterTypeMapEntry(bsontype.DateTime, tDateTime).
+ RegisterTypeMapEntry(bsontype.Regex, tRegex).
+ RegisterTypeMapEntry(bsontype.DBPointer, tDBPointer).
+ RegisterTypeMapEntry(bsontype.JavaScript, tJavaScript).
+ RegisterTypeMapEntry(bsontype.Symbol, tSymbol).
+ RegisterTypeMapEntry(bsontype.CodeWithScope, tCodeWithScope).
+ RegisterTypeMapEntry(bsontype.Int32, tInt32).
+ RegisterTypeMapEntry(bsontype.Int64, tInt64).
+ RegisterTypeMapEntry(bsontype.Timestamp, tTimestamp).
+ RegisterTypeMapEntry(bsontype.Decimal128, tDecimal).
+ RegisterTypeMapEntry(bsontype.MinKey, tMinKey).
+ RegisterTypeMapEntry(bsontype.MaxKey, tMaxKey).
+ RegisterTypeMapEntry(bsontype.Type(0), tD)
+}
+
+// BooleanDecodeValue is the ValueDecoderFunc for bool types.
+func (dvd DefaultValueDecoders) BooleanDecodeValue(dctx DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ if vr.Type() != bsontype.Boolean {
+ return fmt.Errorf("cannot decode %v into a boolean", vr.Type())
+ }
+ if !val.IsValid() || !val.CanSet() || val.Kind() != reflect.Bool {
+ return ValueDecoderError{Name: "BooleanDecodeValue", Kinds: []reflect.Kind{reflect.Bool}, Received: val}
+ }
+
+ b, err := vr.ReadBoolean()
+ val.SetBool(b)
+ return err
+}
+
+// IntDecodeValue is the ValueDecoderFunc for bool types.
+func (dvd DefaultValueDecoders) IntDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ var i64 int64
+ var err error
+ switch vr.Type() {
+ case bsontype.Int32:
+ i32, err := vr.ReadInt32()
+ if err != nil {
+ return err
+ }
+ i64 = int64(i32)
+ case bsontype.Int64:
+ i64, err = vr.ReadInt64()
+ if err != nil {
+ return err
+ }
+ case bsontype.Double:
+ f64, err := vr.ReadDouble()
+ if err != nil {
+ return err
+ }
+ if !dc.Truncate && math.Floor(f64) != f64 {
+ return errors.New("IntDecodeValue can only truncate float64 to an integer type when truncation is enabled")
+ }
+ if f64 > float64(math.MaxInt64) {
+ return fmt.Errorf("%g overflows int64", f64)
+ }
+ i64 = int64(f64)
+ default:
+ return fmt.Errorf("cannot decode %v into an integer type", vr.Type())
+ }
+
+ if !val.CanSet() {
+ return ValueDecoderError{
+ Name: "IntDecodeValue",
+ Kinds: []reflect.Kind{reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int},
+ Received: val,
+ }
+ }
+
+ switch val.Kind() {
+ case reflect.Int8:
+ if i64 < math.MinInt8 || i64 > math.MaxInt8 {
+ return fmt.Errorf("%d overflows int8", i64)
+ }
+ case reflect.Int16:
+ if i64 < math.MinInt16 || i64 > math.MaxInt16 {
+ return fmt.Errorf("%d overflows int16", i64)
+ }
+ case reflect.Int32:
+ if i64 < math.MinInt32 || i64 > math.MaxInt32 {
+ return fmt.Errorf("%d overflows int32", i64)
+ }
+ case reflect.Int64:
+ case reflect.Int:
+ if int64(int(i64)) != i64 { // Can we fit this inside of an int
+ return fmt.Errorf("%d overflows int", i64)
+ }
+ default:
+ return ValueDecoderError{
+ Name: "IntDecodeValue",
+ Kinds: []reflect.Kind{reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int},
+ Received: val,
+ }
+ }
+
+ val.SetInt(i64)
+ return nil
+}
+
+// UintDecodeValue is the ValueDecoderFunc for uint types.
+func (dvd DefaultValueDecoders) UintDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ var i64 int64
+ var err error
+ switch vr.Type() {
+ case bsontype.Int32:
+ i32, err := vr.ReadInt32()
+ if err != nil {
+ return err
+ }
+ i64 = int64(i32)
+ case bsontype.Int64:
+ i64, err = vr.ReadInt64()
+ if err != nil {
+ return err
+ }
+ case bsontype.Double:
+ f64, err := vr.ReadDouble()
+ if err != nil {
+ return err
+ }
+ if !dc.Truncate && math.Floor(f64) != f64 {
+ return errors.New("UintDecodeValue can only truncate float64 to an integer type when truncation is enabled")
+ }
+ if f64 > float64(math.MaxInt64) {
+ return fmt.Errorf("%g overflows int64", f64)
+ }
+ i64 = int64(f64)
+ default:
+ return fmt.Errorf("cannot decode %v into an integer type", vr.Type())
+ }
+
+ if !val.CanSet() {
+ return ValueDecoderError{
+ Name: "UintDecodeValue",
+ Kinds: []reflect.Kind{reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint},
+ Received: val,
+ }
+ }
+
+ switch val.Kind() {
+ case reflect.Uint8:
+ if i64 < 0 || i64 > math.MaxUint8 {
+ return fmt.Errorf("%d overflows uint8", i64)
+ }
+ case reflect.Uint16:
+ if i64 < 0 || i64 > math.MaxUint16 {
+ return fmt.Errorf("%d overflows uint16", i64)
+ }
+ case reflect.Uint32:
+ if i64 < 0 || i64 > math.MaxUint32 {
+ return fmt.Errorf("%d overflows uint32", i64)
+ }
+ case reflect.Uint64:
+ if i64 < 0 {
+ return fmt.Errorf("%d overflows uint64", i64)
+ }
+ case reflect.Uint:
+ if i64 < 0 || int64(uint(i64)) != i64 { // Can we fit this inside of an uint
+ return fmt.Errorf("%d overflows uint", i64)
+ }
+ default:
+ return ValueDecoderError{
+ Name: "UintDecodeValue",
+ Kinds: []reflect.Kind{reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint},
+ Received: val,
+ }
+ }
+
+ val.SetUint(uint64(i64))
+ return nil
+}
+
+// FloatDecodeValue is the ValueDecoderFunc for float types.
+func (dvd DefaultValueDecoders) FloatDecodeValue(ec DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ var f float64
+ var err error
+ switch vr.Type() {
+ case bsontype.Int32:
+ i32, err := vr.ReadInt32()
+ if err != nil {
+ return err
+ }
+ f = float64(i32)
+ case bsontype.Int64:
+ i64, err := vr.ReadInt64()
+ if err != nil {
+ return err
+ }
+ f = float64(i64)
+ case bsontype.Double:
+ f, err = vr.ReadDouble()
+ if err != nil {
+ return err
+ }
+ default:
+ return fmt.Errorf("cannot decode %v into a float32 or float64 type", vr.Type())
+ }
+
+ if !val.CanSet() {
+ return ValueDecoderError{Name: "FloatDecodeValue", Kinds: []reflect.Kind{reflect.Float32, reflect.Float64}, Received: val}
+ }
+
+ switch val.Kind() {
+ case reflect.Float32:
+ if !ec.Truncate && float64(float32(f)) != f {
+ return errors.New("FloatDecodeValue can only convert float64 to float32 when truncation is allowed")
+ }
+ case reflect.Float64:
+ default:
+ return ValueDecoderError{Name: "FloatDecodeValue", Kinds: []reflect.Kind{reflect.Float32, reflect.Float64}, Received: val}
+ }
+
+ val.SetFloat(f)
+ return nil
+}
+
+// StringDecodeValue is the ValueDecoderFunc for string types.
+func (dvd DefaultValueDecoders) StringDecodeValue(dctx DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ var str string
+ var err error
+ switch vr.Type() {
+ // TODO(GODRIVER-577): Handle JavaScript and Symbol BSON types when allowed.
+ case bsontype.String:
+ str, err = vr.ReadString()
+ if err != nil {
+ return err
+ }
+ default:
+ return fmt.Errorf("cannot decode %v into a string type", vr.Type())
+ }
+ if !val.CanSet() || val.Kind() != reflect.String {
+ return ValueDecoderError{Name: "StringDecodeValue", Kinds: []reflect.Kind{reflect.String}, Received: val}
+ }
+
+ val.SetString(str)
+ return nil
+}
+
+// JavaScriptDecodeValue is the ValueDecoderFunc for the primitive.JavaScript type.
+func (DefaultValueDecoders) JavaScriptDecodeValue(dctx DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ if !val.CanSet() || val.Type() != tJavaScript {
+ return ValueDecoderError{Name: "BinaryDecodeValue", Types: []reflect.Type{tJavaScript}, Received: val}
+ }
+
+ if vr.Type() != bsontype.JavaScript {
+ return fmt.Errorf("cannot decode %v into a primitive.JavaScript", vr.Type())
+ }
+
+ js, err := vr.ReadJavascript()
+ if err != nil {
+ return err
+ }
+
+ val.SetString(js)
+ return nil
+}
+
+// SymbolDecodeValue is the ValueDecoderFunc for the primitive.Symbol type.
+func (DefaultValueDecoders) SymbolDecodeValue(dctx DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ if !val.CanSet() || val.Type() != tSymbol {
+ return ValueDecoderError{Name: "BinaryDecodeValue", Types: []reflect.Type{tSymbol}, Received: val}
+ }
+
+ if vr.Type() != bsontype.Symbol {
+ return fmt.Errorf("cannot decode %v into a primitive.Symbol", vr.Type())
+ }
+
+ symbol, err := vr.ReadSymbol()
+ if err != nil {
+ return err
+ }
+
+ val.SetString(symbol)
+ return nil
+}
+
+// BinaryDecodeValue is the ValueDecoderFunc for Binary.
+func (DefaultValueDecoders) BinaryDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ if !val.CanSet() || val.Type() != tBinary {
+ return ValueDecoderError{Name: "BinaryDecodeValue", Types: []reflect.Type{tBinary}, Received: val}
+ }
+
+ if vr.Type() != bsontype.Binary {
+ return fmt.Errorf("cannot decode %v into a Binary", vr.Type())
+ }
+
+ data, subtype, err := vr.ReadBinary()
+ if err != nil {
+ return err
+ }
+
+ val.Set(reflect.ValueOf(primitive.Binary{Subtype: subtype, Data: data}))
+ return nil
+}
+
+// UndefinedDecodeValue is the ValueDecoderFunc for Undefined.
+func (DefaultValueDecoders) UndefinedDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ if !val.CanSet() || val.Type() != tUndefined {
+ return ValueDecoderError{Name: "UndefinedDecodeValue", Types: []reflect.Type{tUndefined}, Received: val}
+ }
+
+ if vr.Type() != bsontype.Undefined {
+ return fmt.Errorf("cannot decode %v into an Undefined", vr.Type())
+ }
+
+ val.Set(reflect.ValueOf(primitive.Undefined{}))
+ return vr.ReadUndefined()
+}
+
+// ObjectIDDecodeValue is the ValueDecoderFunc for primitive.ObjectID.
+func (dvd DefaultValueDecoders) ObjectIDDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ if !val.CanSet() || val.Type() != tOID {
+ return ValueDecoderError{Name: "ObjectIDDecodeValue", Types: []reflect.Type{tOID}, Received: val}
+ }
+
+ if vr.Type() != bsontype.ObjectID {
+ return fmt.Errorf("cannot decode %v into an ObjectID", vr.Type())
+ }
+ oid, err := vr.ReadObjectID()
+ val.Set(reflect.ValueOf(oid))
+ return err
+}
+
+// DateTimeDecodeValue is the ValueDecoderFunc for DateTime.
+func (DefaultValueDecoders) DateTimeDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ if !val.CanSet() || val.Type() != tDateTime {
+ return ValueDecoderError{Name: "DateTimeDecodeValue", Types: []reflect.Type{tDateTime}, Received: val}
+ }
+
+ if vr.Type() != bsontype.DateTime {
+ return fmt.Errorf("cannot decode %v into a DateTime", vr.Type())
+ }
+
+ dt, err := vr.ReadDateTime()
+ if err != nil {
+ return err
+ }
+
+ val.Set(reflect.ValueOf(primitive.DateTime(dt)))
+ return nil
+}
+
+// NullDecodeValue is the ValueDecoderFunc for Null.
+func (DefaultValueDecoders) NullDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ if !val.CanSet() || val.Type() != tNull {
+ return ValueDecoderError{Name: "NullDecodeValue", Types: []reflect.Type{tNull}, Received: val}
+ }
+
+ if vr.Type() != bsontype.Null {
+ return fmt.Errorf("cannot decode %v into a Null", vr.Type())
+ }
+
+ val.Set(reflect.ValueOf(primitive.Null{}))
+ return vr.ReadNull()
+}
+
+// RegexDecodeValue is the ValueDecoderFunc for Regex.
+func (DefaultValueDecoders) RegexDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ if !val.CanSet() || val.Type() != tRegex {
+ return ValueDecoderError{Name: "RegexDecodeValue", Types: []reflect.Type{tRegex}, Received: val}
+ }
+
+ if vr.Type() != bsontype.Regex {
+ return fmt.Errorf("cannot decode %v into a Regex", vr.Type())
+ }
+
+ pattern, options, err := vr.ReadRegex()
+ if err != nil {
+ return err
+ }
+
+ val.Set(reflect.ValueOf(primitive.Regex{Pattern: pattern, Options: options}))
+ return nil
+}
+
+// DBPointerDecodeValue is the ValueDecoderFunc for DBPointer.
+func (DefaultValueDecoders) DBPointerDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ if !val.CanSet() || val.Type() != tDBPointer {
+ return ValueDecoderError{Name: "DBPointerDecodeValue", Types: []reflect.Type{tDBPointer}, Received: val}
+ }
+
+ if vr.Type() != bsontype.DBPointer {
+ return fmt.Errorf("cannot decode %v into a DBPointer", vr.Type())
+ }
+
+ ns, pointer, err := vr.ReadDBPointer()
+ if err != nil {
+ return err
+ }
+
+ val.Set(reflect.ValueOf(primitive.DBPointer{DB: ns, Pointer: pointer}))
+ return nil
+}
+
+// TimestampDecodeValue is the ValueDecoderFunc for Timestamp.
+func (DefaultValueDecoders) TimestampDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ if !val.CanSet() || val.Type() != tTimestamp {
+ return ValueDecoderError{Name: "TimestampDecodeValue", Types: []reflect.Type{tTimestamp}, Received: val}
+ }
+
+ if vr.Type() != bsontype.Timestamp {
+ return fmt.Errorf("cannot decode %v into a Timestamp", vr.Type())
+ }
+
+ t, incr, err := vr.ReadTimestamp()
+ if err != nil {
+ return err
+ }
+
+ val.Set(reflect.ValueOf(primitive.Timestamp{T: t, I: incr}))
+ return nil
+}
+
+// MinKeyDecodeValue is the ValueDecoderFunc for MinKey.
+func (DefaultValueDecoders) MinKeyDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ if !val.CanSet() || val.Type() != tMinKey {
+ return ValueDecoderError{Name: "MinKeyDecodeValue", Types: []reflect.Type{tMinKey}, Received: val}
+ }
+
+ if vr.Type() != bsontype.MinKey {
+ return fmt.Errorf("cannot decode %v into a MinKey", vr.Type())
+ }
+
+ val.Set(reflect.ValueOf(primitive.MinKey{}))
+ return vr.ReadMinKey()
+}
+
+// MaxKeyDecodeValue is the ValueDecoderFunc for MaxKey.
+func (DefaultValueDecoders) MaxKeyDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ if !val.CanSet() || val.Type() != tMaxKey {
+ return ValueDecoderError{Name: "MaxKeyDecodeValue", Types: []reflect.Type{tMaxKey}, Received: val}
+ }
+
+ if vr.Type() != bsontype.MaxKey {
+ return fmt.Errorf("cannot decode %v into a MaxKey", vr.Type())
+ }
+
+ val.Set(reflect.ValueOf(primitive.MaxKey{}))
+ return vr.ReadMaxKey()
+}
+
+// Decimal128DecodeValue is the ValueDecoderFunc for primitive.Decimal128.
+func (dvd DefaultValueDecoders) Decimal128DecodeValue(dctx DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ if vr.Type() != bsontype.Decimal128 {
+ return fmt.Errorf("cannot decode %v into a primitive.Decimal128", vr.Type())
+ }
+
+ if !val.CanSet() || val.Type() != tDecimal {
+ return ValueDecoderError{Name: "Decimal128DecodeValue", Types: []reflect.Type{tDecimal}, Received: val}
+ }
+ d128, err := vr.ReadDecimal128()
+ val.Set(reflect.ValueOf(d128))
+ return err
+}
+
+// JSONNumberDecodeValue is the ValueDecoderFunc for json.Number.
+func (dvd DefaultValueDecoders) JSONNumberDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ if !val.CanSet() || val.Type() != tJSONNumber {
+ return ValueDecoderError{Name: "JSONNumberDecodeValue", Types: []reflect.Type{tJSONNumber}, Received: val}
+ }
+
+ switch vr.Type() {
+ case bsontype.Double:
+ f64, err := vr.ReadDouble()
+ if err != nil {
+ return err
+ }
+ val.Set(reflect.ValueOf(json.Number(strconv.FormatFloat(f64, 'g', -1, 64))))
+ case bsontype.Int32:
+ i32, err := vr.ReadInt32()
+ if err != nil {
+ return err
+ }
+ val.Set(reflect.ValueOf(json.Number(strconv.FormatInt(int64(i32), 10))))
+ case bsontype.Int64:
+ i64, err := vr.ReadInt64()
+ if err != nil {
+ return err
+ }
+ val.Set(reflect.ValueOf(json.Number(strconv.FormatInt(i64, 10))))
+ default:
+ return fmt.Errorf("cannot decode %v into a json.Number", vr.Type())
+ }
+
+ return nil
+}
+
+// URLDecodeValue is the ValueDecoderFunc for url.URL.
+func (dvd DefaultValueDecoders) URLDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ if vr.Type() != bsontype.String {
+ return fmt.Errorf("cannot decode %v into a *url.URL", vr.Type())
+ }
+
+ str, err := vr.ReadString()
+ if err != nil {
+ return err
+ }
+
+ u, err := url.Parse(str)
+ if err != nil {
+ return err
+ }
+
+ if !val.CanSet() || val.Type() != tURL {
+ return ValueDecoderError{Name: "URLDecodeValue", Types: []reflect.Type{tURL}, Received: val}
+ }
+
+ val.Set(reflect.ValueOf(u).Elem())
+ return nil
+}
+
+// TimeDecodeValue is the ValueDecoderFunc for time.Time.
+func (dvd DefaultValueDecoders) TimeDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ if vr.Type() != bsontype.DateTime {
+ return fmt.Errorf("cannot decode %v into a time.Time", vr.Type())
+ }
+
+ dt, err := vr.ReadDateTime()
+ if err != nil {
+ return err
+ }
+
+ if !val.CanSet() || val.Type() != tTime {
+ return ValueDecoderError{Name: "TimeDecodeValue", Types: []reflect.Type{tTime}, Received: val}
+ }
+
+ val.Set(reflect.ValueOf(time.Unix(dt/1000, dt%1000*1000000)))
+ return nil
+}
+
+// ByteSliceDecodeValue is the ValueDecoderFunc for []byte.
+func (dvd DefaultValueDecoders) ByteSliceDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ if vr.Type() != bsontype.Binary && vr.Type() != bsontype.Null {
+ return fmt.Errorf("cannot decode %v into a []byte", vr.Type())
+ }
+
+ if !val.CanSet() || val.Type() != tByteSlice {
+ return ValueDecoderError{Name: "ByteSliceDecodeValue", Types: []reflect.Type{tByteSlice}, Received: val}
+ }
+
+ if vr.Type() == bsontype.Null {
+ val.Set(reflect.Zero(val.Type()))
+ return vr.ReadNull()
+ }
+
+ data, subtype, err := vr.ReadBinary()
+ if err != nil {
+ return err
+ }
+ if subtype != 0x00 {
+ return fmt.Errorf("ByteSliceDecodeValue can only be used to decode subtype 0x00 for %s, got %v", bsontype.Binary, subtype)
+ }
+
+ val.Set(reflect.ValueOf(data))
+ return nil
+}
+
+// MapDecodeValue is the ValueDecoderFunc for map[string]* types.
+func (dvd DefaultValueDecoders) MapDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ if !val.CanSet() || val.Kind() != reflect.Map || val.Type().Key().Kind() != reflect.String {
+ return ValueDecoderError{Name: "MapDecodeValue", Kinds: []reflect.Kind{reflect.Map}, Received: val}
+ }
+
+ switch vr.Type() {
+ case bsontype.Type(0), bsontype.EmbeddedDocument:
+ case bsontype.Null:
+ val.Set(reflect.Zero(val.Type()))
+ return vr.ReadNull()
+ default:
+ return fmt.Errorf("cannot decode %v into a %s", vr.Type(), val.Type())
+ }
+
+ dr, err := vr.ReadDocument()
+ if err != nil {
+ return err
+ }
+
+ if val.IsNil() {
+ val.Set(reflect.MakeMap(val.Type()))
+ }
+
+ eType := val.Type().Elem()
+ decoder, err := dc.LookupDecoder(eType)
+ if err != nil {
+ return err
+ }
+
+ if eType == tEmpty {
+ dc.Ancestor = val.Type()
+ }
+
+ keyType := val.Type().Key()
+ for {
+ key, vr, err := dr.ReadElement()
+ if err == bsonrw.ErrEOD {
+ break
+ }
+ if err != nil {
+ return err
+ }
+
+ elem := reflect.New(eType).Elem()
+
+ err = decoder.DecodeValue(dc, vr, elem)
+ if err != nil {
+ return err
+ }
+
+ val.SetMapIndex(reflect.ValueOf(key).Convert(keyType), elem)
+ }
+ return nil
+}
+
+// ArrayDecodeValue is the ValueDecoderFunc for array types.
+func (dvd DefaultValueDecoders) ArrayDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ if !val.IsValid() || val.Kind() != reflect.Array {
+ return ValueDecoderError{Name: "ArrayDecodeValue", Kinds: []reflect.Kind{reflect.Array}, Received: val}
+ }
+
+ switch vr.Type() {
+ case bsontype.Array:
+ case bsontype.Type(0), bsontype.EmbeddedDocument:
+ if val.Type().Elem() != tE {
+ return fmt.Errorf("cannot decode document into %s", val.Type())
+ }
+ default:
+ return fmt.Errorf("cannot decode %v into an array", vr.Type())
+ }
+
+ var elemsFunc func(DecodeContext, bsonrw.ValueReader, reflect.Value) ([]reflect.Value, error)
+ switch val.Type().Elem() {
+ case tE:
+ elemsFunc = dvd.decodeD
+ default:
+ elemsFunc = dvd.decodeDefault
+ }
+
+ elems, err := elemsFunc(dc, vr, val)
+ if err != nil {
+ return err
+ }
+
+ if len(elems) > val.Len() {
+ return fmt.Errorf("more elements returned in array than can fit inside %s", val.Type())
+ }
+
+ for idx, elem := range elems {
+ val.Index(idx).Set(elem)
+ }
+
+ return nil
+}
+
+// SliceDecodeValue is the ValueDecoderFunc for slice types.
+func (dvd DefaultValueDecoders) SliceDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ if !val.CanSet() || val.Kind() != reflect.Slice {
+ return ValueDecoderError{Name: "SliceDecodeValue", Kinds: []reflect.Kind{reflect.Slice}, Received: val}
+ }
+
+ switch vr.Type() {
+ case bsontype.Array:
+ case bsontype.Null:
+ val.Set(reflect.Zero(val.Type()))
+ return vr.ReadNull()
+ case bsontype.Type(0), bsontype.EmbeddedDocument:
+ if val.Type().Elem() != tE {
+ return fmt.Errorf("cannot decode document into %s", val.Type())
+ }
+ default:
+ return fmt.Errorf("cannot decode %v into a slice", vr.Type())
+ }
+
+ var elemsFunc func(DecodeContext, bsonrw.ValueReader, reflect.Value) ([]reflect.Value, error)
+ switch val.Type().Elem() {
+ case tE:
+ dc.Ancestor = val.Type()
+ elemsFunc = dvd.decodeD
+ default:
+ elemsFunc = dvd.decodeDefault
+ }
+
+ elems, err := elemsFunc(dc, vr, val)
+ if err != nil {
+ return err
+ }
+
+ if val.IsNil() {
+ val.Set(reflect.MakeSlice(val.Type(), 0, len(elems)))
+ }
+
+ val.SetLen(0)
+ val.Set(reflect.Append(val, elems...))
+
+ return nil
+}
+
+// ValueUnmarshalerDecodeValue is the ValueDecoderFunc for ValueUnmarshaler implementations.
+func (dvd DefaultValueDecoders) ValueUnmarshalerDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ if !val.IsValid() || (!val.Type().Implements(tValueUnmarshaler) && !reflect.PtrTo(val.Type()).Implements(tValueUnmarshaler)) {
+ return ValueDecoderError{Name: "ValueUnmarshalerDecodeValue", Types: []reflect.Type{tValueUnmarshaler}, Received: val}
+ }
+
+ if val.Kind() == reflect.Ptr && val.IsNil() {
+ if !val.CanSet() {
+ return ValueDecoderError{Name: "ValueUnmarshalerDecodeValue", Types: []reflect.Type{tValueUnmarshaler}, Received: val}
+ }
+ val.Set(reflect.New(val.Type().Elem()))
+ }
+
+ if !val.Type().Implements(tValueUnmarshaler) {
+ if !val.CanAddr() {
+ return ValueDecoderError{Name: "ValueUnmarshalerDecodeValue", Types: []reflect.Type{tValueUnmarshaler}, Received: val}
+ }
+ val = val.Addr() // If they type doesn't implement the interface, a pointer to it must.
+ }
+
+ t, src, err := bsonrw.Copier{}.CopyValueToBytes(vr)
+ if err != nil {
+ return err
+ }
+
+ fn := val.Convert(tValueUnmarshaler).MethodByName("UnmarshalBSONValue")
+ errVal := fn.Call([]reflect.Value{reflect.ValueOf(t), reflect.ValueOf(src)})[0]
+ if !errVal.IsNil() {
+ return errVal.Interface().(error)
+ }
+ return nil
+}
+
+// UnmarshalerDecodeValue is the ValueDecoderFunc for Unmarshaler implementations.
+func (dvd DefaultValueDecoders) UnmarshalerDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ if !val.IsValid() || (!val.Type().Implements(tUnmarshaler) && !reflect.PtrTo(val.Type()).Implements(tUnmarshaler)) {
+ return ValueDecoderError{Name: "UnmarshalerDecodeValue", Types: []reflect.Type{tUnmarshaler}, Received: val}
+ }
+
+ if val.Kind() == reflect.Ptr && val.IsNil() {
+ if !val.CanSet() {
+ return ValueDecoderError{Name: "UnmarshalerDecodeValue", Types: []reflect.Type{tUnmarshaler}, Received: val}
+ }
+ val.Set(reflect.New(val.Type().Elem()))
+ }
+
+ if !val.Type().Implements(tUnmarshaler) {
+ if !val.CanAddr() {
+ return ValueDecoderError{Name: "UnmarshalerDecodeValue", Types: []reflect.Type{tUnmarshaler}, Received: val}
+ }
+ val = val.Addr() // If they type doesn't implement the interface, a pointer to it must.
+ }
+
+ _, src, err := bsonrw.Copier{}.CopyValueToBytes(vr)
+ if err != nil {
+ return err
+ }
+
+ fn := val.Convert(tUnmarshaler).MethodByName("UnmarshalBSON")
+ errVal := fn.Call([]reflect.Value{reflect.ValueOf(src)})[0]
+ if !errVal.IsNil() {
+ return errVal.Interface().(error)
+ }
+ return nil
+}
+
+// EmptyInterfaceDecodeValue is the ValueDecoderFunc for interface{}.
+func (dvd DefaultValueDecoders) EmptyInterfaceDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ if !val.CanSet() || val.Type() != tEmpty {
+ return ValueDecoderError{Name: "EmptyInterfaceDecodeValue", Types: []reflect.Type{tEmpty}, Received: val}
+ }
+
+ rtype, err := dc.LookupTypeMapEntry(vr.Type())
+ if err != nil {
+ switch vr.Type() {
+ case bsontype.EmbeddedDocument:
+ if dc.Ancestor != nil {
+ rtype = dc.Ancestor
+ break
+ }
+ rtype = tD
+ case bsontype.Null:
+ val.Set(reflect.Zero(val.Type()))
+ return vr.ReadNull()
+ default:
+ return err
+ }
+ }
+
+ decoder, err := dc.LookupDecoder(rtype)
+ if err != nil {
+ return err
+ }
+
+ elem := reflect.New(rtype).Elem()
+ err = decoder.DecodeValue(dc, vr, elem)
+ if err != nil {
+ return err
+ }
+
+ val.Set(elem)
+ return nil
+}
+
+// CoreDocumentDecodeValue is the ValueDecoderFunc for bsoncore.Document.
+func (DefaultValueDecoders) CoreDocumentDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ if !val.CanSet() || val.Type() != tCoreDocument {
+ return ValueDecoderError{Name: "CoreDocumentDecodeValue", Types: []reflect.Type{tCoreDocument}, Received: val}
+ }
+
+ if val.IsNil() {
+ val.Set(reflect.MakeSlice(val.Type(), 0, 0))
+ }
+
+ val.SetLen(0)
+
+ cdoc, err := bsonrw.Copier{}.AppendDocumentBytes(val.Interface().(bsoncore.Document), vr)
+ val.Set(reflect.ValueOf(cdoc))
+ return err
+}
+
+func (dvd DefaultValueDecoders) decodeDefault(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) ([]reflect.Value, error) {
+ elems := make([]reflect.Value, 0)
+
+ ar, err := vr.ReadArray()
+ if err != nil {
+ return nil, err
+ }
+
+ eType := val.Type().Elem()
+
+ decoder, err := dc.LookupDecoder(eType)
+ if err != nil {
+ return nil, err
+ }
+
+ for {
+ vr, err := ar.ReadValue()
+ if err == bsonrw.ErrEOA {
+ break
+ }
+ if err != nil {
+ return nil, err
+ }
+
+ elem := reflect.New(eType).Elem()
+
+ err = decoder.DecodeValue(dc, vr, elem)
+ if err != nil {
+ return nil, err
+ }
+ elems = append(elems, elem)
+ }
+
+ return elems, nil
+}
+
+// CodeWithScopeDecodeValue is the ValueDecoderFunc for CodeWithScope.
+func (dvd DefaultValueDecoders) CodeWithScopeDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ if !val.CanSet() || val.Type() != tCodeWithScope {
+ return ValueDecoderError{Name: "CodeWithScopeDecodeValue", Types: []reflect.Type{tCodeWithScope}, Received: val}
+ }
+
+ if vr.Type() != bsontype.CodeWithScope {
+ return fmt.Errorf("cannot decode %v into a primitive.CodeWithScope", vr.Type())
+ }
+
+ code, dr, err := vr.ReadCodeWithScope()
+ if err != nil {
+ return err
+ }
+
+ scope := reflect.New(tD).Elem()
+
+ elems, err := dvd.decodeElemsFromDocumentReader(dc, dr)
+ if err != nil {
+ return err
+ }
+
+ scope.Set(reflect.MakeSlice(tD, 0, len(elems)))
+ scope.Set(reflect.Append(scope, elems...))
+
+ val.Set(reflect.ValueOf(primitive.CodeWithScope{Code: primitive.JavaScript(code), Scope: scope.Interface().(primitive.D)}))
+ return nil
+}
+
+func (dvd DefaultValueDecoders) decodeD(dc DecodeContext, vr bsonrw.ValueReader, _ reflect.Value) ([]reflect.Value, error) {
+ switch vr.Type() {
+ case bsontype.Type(0), bsontype.EmbeddedDocument:
+ default:
+ return nil, fmt.Errorf("cannot decode %v into a D", vr.Type())
+ }
+
+ dr, err := vr.ReadDocument()
+ if err != nil {
+ return nil, err
+ }
+
+ return dvd.decodeElemsFromDocumentReader(dc, dr)
+}
+
+func (DefaultValueDecoders) decodeElemsFromDocumentReader(dc DecodeContext, dr bsonrw.DocumentReader) ([]reflect.Value, error) {
+ decoder, err := dc.LookupDecoder(tEmpty)
+ if err != nil {
+ return nil, err
+ }
+
+ elems := make([]reflect.Value, 0)
+ for {
+ key, vr, err := dr.ReadElement()
+ if err == bsonrw.ErrEOD {
+ break
+ }
+ if err != nil {
+ return nil, err
+ }
+
+ val := reflect.New(tEmpty).Elem()
+ err = decoder.DecodeValue(dc, vr, val)
+ if err != nil {
+ return nil, err
+ }
+
+ elems = append(elems, reflect.ValueOf(primitive.E{Key: key, Value: val.Interface()}))
+ }
+
+ return elems, nil
+}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/default_value_encoders.go b/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/default_value_encoders.go
new file mode 100644
index 0000000..61295bd
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/default_value_encoders.go
@@ -0,0 +1,648 @@
+// 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 bsoncodec
+
+import (
+ "encoding/json"
+ "errors"
+ "fmt"
+ "math"
+ "net/url"
+ "reflect"
+ "sync"
+ "time"
+
+ "github.com/mongodb/mongo-go-driver/bson/bsonrw"
+ "github.com/mongodb/mongo-go-driver/bson/bsontype"
+ "github.com/mongodb/mongo-go-driver/bson/primitive"
+ "github.com/mongodb/mongo-go-driver/x/bsonx/bsoncore"
+)
+
+var defaultValueEncoders DefaultValueEncoders
+
+var bvwPool = bsonrw.NewBSONValueWriterPool()
+
+var sliceWriterPool = sync.Pool{
+ New: func() interface{} {
+ sw := make(bsonrw.SliceWriter, 0, 0)
+ return &sw
+ },
+}
+
+func encodeElement(ec EncodeContext, dw bsonrw.DocumentWriter, e primitive.E) error {
+ vw, err := dw.WriteDocumentElement(e.Key)
+ if err != nil {
+ return err
+ }
+
+ if e.Value == nil {
+ return vw.WriteNull()
+ }
+ encoder, err := ec.LookupEncoder(reflect.TypeOf(e.Value))
+ if err != nil {
+ return err
+ }
+
+ err = encoder.EncodeValue(ec, vw, reflect.ValueOf(e.Value))
+ if err != nil {
+ return err
+ }
+ return nil
+}
+
+// DefaultValueEncoders is a namespace type for the default ValueEncoders used
+// when creating a registry.
+type DefaultValueEncoders struct{}
+
+// RegisterDefaultEncoders will register the encoder methods attached to DefaultValueEncoders with
+// the provided RegistryBuilder.
+func (dve DefaultValueEncoders) RegisterDefaultEncoders(rb *RegistryBuilder) {
+ if rb == nil {
+ panic(errors.New("argument to RegisterDefaultEncoders must not be nil"))
+ }
+ rb.
+ RegisterEncoder(tByteSlice, ValueEncoderFunc(dve.ByteSliceEncodeValue)).
+ RegisterEncoder(tTime, ValueEncoderFunc(dve.TimeEncodeValue)).
+ RegisterEncoder(tEmpty, ValueEncoderFunc(dve.EmptyInterfaceEncodeValue)).
+ RegisterEncoder(tOID, ValueEncoderFunc(dve.ObjectIDEncodeValue)).
+ RegisterEncoder(tDecimal, ValueEncoderFunc(dve.Decimal128EncodeValue)).
+ RegisterEncoder(tJSONNumber, ValueEncoderFunc(dve.JSONNumberEncodeValue)).
+ RegisterEncoder(tURL, ValueEncoderFunc(dve.URLEncodeValue)).
+ RegisterEncoder(tValueMarshaler, ValueEncoderFunc(dve.ValueMarshalerEncodeValue)).
+ RegisterEncoder(tMarshaler, ValueEncoderFunc(dve.MarshalerEncodeValue)).
+ RegisterEncoder(tProxy, ValueEncoderFunc(dve.ProxyEncodeValue)).
+ RegisterEncoder(tJavaScript, ValueEncoderFunc(dve.JavaScriptEncodeValue)).
+ RegisterEncoder(tSymbol, ValueEncoderFunc(dve.SymbolEncodeValue)).
+ RegisterEncoder(tBinary, ValueEncoderFunc(dve.BinaryEncodeValue)).
+ RegisterEncoder(tUndefined, ValueEncoderFunc(dve.UndefinedEncodeValue)).
+ RegisterEncoder(tDateTime, ValueEncoderFunc(dve.DateTimeEncodeValue)).
+ RegisterEncoder(tNull, ValueEncoderFunc(dve.NullEncodeValue)).
+ RegisterEncoder(tRegex, ValueEncoderFunc(dve.RegexEncodeValue)).
+ RegisterEncoder(tDBPointer, ValueEncoderFunc(dve.DBPointerEncodeValue)).
+ RegisterEncoder(tTimestamp, ValueEncoderFunc(dve.TimestampEncodeValue)).
+ RegisterEncoder(tMinKey, ValueEncoderFunc(dve.MinKeyEncodeValue)).
+ RegisterEncoder(tMaxKey, ValueEncoderFunc(dve.MaxKeyEncodeValue)).
+ RegisterEncoder(tCoreDocument, ValueEncoderFunc(dve.CoreDocumentEncodeValue)).
+ RegisterEncoder(tCodeWithScope, ValueEncoderFunc(dve.CodeWithScopeEncodeValue)).
+ RegisterDefaultEncoder(reflect.Bool, ValueEncoderFunc(dve.BooleanEncodeValue)).
+ RegisterDefaultEncoder(reflect.Int, ValueEncoderFunc(dve.IntEncodeValue)).
+ RegisterDefaultEncoder(reflect.Int8, ValueEncoderFunc(dve.IntEncodeValue)).
+ RegisterDefaultEncoder(reflect.Int16, ValueEncoderFunc(dve.IntEncodeValue)).
+ RegisterDefaultEncoder(reflect.Int32, ValueEncoderFunc(dve.IntEncodeValue)).
+ RegisterDefaultEncoder(reflect.Int64, ValueEncoderFunc(dve.IntEncodeValue)).
+ RegisterDefaultEncoder(reflect.Uint, ValueEncoderFunc(dve.UintEncodeValue)).
+ RegisterDefaultEncoder(reflect.Uint8, ValueEncoderFunc(dve.UintEncodeValue)).
+ RegisterDefaultEncoder(reflect.Uint16, ValueEncoderFunc(dve.UintEncodeValue)).
+ RegisterDefaultEncoder(reflect.Uint32, ValueEncoderFunc(dve.UintEncodeValue)).
+ RegisterDefaultEncoder(reflect.Uint64, ValueEncoderFunc(dve.UintEncodeValue)).
+ RegisterDefaultEncoder(reflect.Float32, ValueEncoderFunc(dve.FloatEncodeValue)).
+ RegisterDefaultEncoder(reflect.Float64, ValueEncoderFunc(dve.FloatEncodeValue)).
+ RegisterDefaultEncoder(reflect.Array, ValueEncoderFunc(dve.ArrayEncodeValue)).
+ RegisterDefaultEncoder(reflect.Map, ValueEncoderFunc(dve.MapEncodeValue)).
+ RegisterDefaultEncoder(reflect.Slice, ValueEncoderFunc(dve.SliceEncodeValue)).
+ RegisterDefaultEncoder(reflect.String, ValueEncoderFunc(dve.StringEncodeValue)).
+ RegisterDefaultEncoder(reflect.Struct, &StructCodec{cache: make(map[reflect.Type]*structDescription), parser: DefaultStructTagParser}).
+ RegisterDefaultEncoder(reflect.Ptr, NewPointerCodec())
+}
+
+// BooleanEncodeValue is the ValueEncoderFunc for bool types.
+func (dve DefaultValueEncoders) BooleanEncodeValue(ectx EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if !val.IsValid() || val.Kind() != reflect.Bool {
+ return ValueEncoderError{Name: "BooleanEncodeValue", Kinds: []reflect.Kind{reflect.Bool}, Received: val}
+ }
+ return vw.WriteBoolean(val.Bool())
+}
+
+func fitsIn32Bits(i int64) bool {
+ return math.MinInt32 <= i && i <= math.MaxInt32
+}
+
+// IntEncodeValue is the ValueEncoderFunc for int types.
+func (dve DefaultValueEncoders) IntEncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ switch val.Kind() {
+ case reflect.Int8, reflect.Int16, reflect.Int32:
+ return vw.WriteInt32(int32(val.Int()))
+ case reflect.Int:
+ i64 := val.Int()
+ if fitsIn32Bits(i64) {
+ return vw.WriteInt32(int32(i64))
+ }
+ return vw.WriteInt64(i64)
+ case reflect.Int64:
+ i64 := val.Int()
+ if ec.MinSize && fitsIn32Bits(i64) {
+ return vw.WriteInt32(int32(i64))
+ }
+ return vw.WriteInt64(i64)
+ }
+
+ return ValueEncoderError{
+ Name: "IntEncodeValue",
+ Kinds: []reflect.Kind{reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int},
+ Received: val,
+ }
+}
+
+// UintEncodeValue is the ValueEncoderFunc for uint types.
+func (dve DefaultValueEncoders) UintEncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ switch val.Kind() {
+ case reflect.Uint8, reflect.Uint16:
+ return vw.WriteInt32(int32(val.Uint()))
+ case reflect.Uint, reflect.Uint32, reflect.Uint64:
+ u64 := val.Uint()
+ if ec.MinSize && u64 <= math.MaxInt32 {
+ return vw.WriteInt32(int32(u64))
+ }
+ if u64 > math.MaxInt64 {
+ return fmt.Errorf("%d overflows int64", u64)
+ }
+ return vw.WriteInt64(int64(u64))
+ }
+
+ return ValueEncoderError{
+ Name: "UintEncodeValue",
+ Kinds: []reflect.Kind{reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint},
+ Received: val,
+ }
+}
+
+// FloatEncodeValue is the ValueEncoderFunc for float types.
+func (dve DefaultValueEncoders) FloatEncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ switch val.Kind() {
+ case reflect.Float32, reflect.Float64:
+ return vw.WriteDouble(val.Float())
+ }
+
+ return ValueEncoderError{Name: "FloatEncodeValue", Kinds: []reflect.Kind{reflect.Float32, reflect.Float64}, Received: val}
+}
+
+// StringEncodeValue is the ValueEncoderFunc for string types.
+func (dve DefaultValueEncoders) StringEncodeValue(ectx EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if val.Kind() != reflect.String {
+ return ValueEncoderError{
+ Name: "StringEncodeValue",
+ Kinds: []reflect.Kind{reflect.String},
+ Received: val,
+ }
+ }
+
+ return vw.WriteString(val.String())
+}
+
+// ObjectIDEncodeValue is the ValueEncoderFunc for primitive.ObjectID.
+func (dve DefaultValueEncoders) ObjectIDEncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if !val.IsValid() || val.Type() != tOID {
+ return ValueEncoderError{Name: "ObjectIDEncodeValue", Types: []reflect.Type{tOID}, Received: val}
+ }
+ return vw.WriteObjectID(val.Interface().(primitive.ObjectID))
+}
+
+// Decimal128EncodeValue is the ValueEncoderFunc for primitive.Decimal128.
+func (dve DefaultValueEncoders) Decimal128EncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if !val.IsValid() || val.Type() != tDecimal {
+ return ValueEncoderError{Name: "Decimal128EncodeValue", Types: []reflect.Type{tDecimal}, Received: val}
+ }
+ return vw.WriteDecimal128(val.Interface().(primitive.Decimal128))
+}
+
+// JSONNumberEncodeValue is the ValueEncoderFunc for json.Number.
+func (dve DefaultValueEncoders) JSONNumberEncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if !val.IsValid() || val.Type() != tJSONNumber {
+ return ValueEncoderError{Name: "JSONNumberEncodeValue", Types: []reflect.Type{tJSONNumber}, Received: val}
+ }
+ jsnum := val.Interface().(json.Number)
+
+ // Attempt int first, then float64
+ if i64, err := jsnum.Int64(); err == nil {
+ return dve.IntEncodeValue(ec, vw, reflect.ValueOf(i64))
+ }
+
+ f64, err := jsnum.Float64()
+ if err != nil {
+ return err
+ }
+
+ return dve.FloatEncodeValue(ec, vw, reflect.ValueOf(f64))
+}
+
+// URLEncodeValue is the ValueEncoderFunc for url.URL.
+func (dve DefaultValueEncoders) URLEncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if !val.IsValid() || val.Type() != tURL {
+ return ValueEncoderError{Name: "URLEncodeValue", Types: []reflect.Type{tURL}, Received: val}
+ }
+ u := val.Interface().(url.URL)
+ return vw.WriteString(u.String())
+}
+
+// TimeEncodeValue is the ValueEncoderFunc for time.TIme.
+func (dve DefaultValueEncoders) TimeEncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if !val.IsValid() || val.Type() != tTime {
+ return ValueEncoderError{Name: "TimeEncodeValue", Types: []reflect.Type{tTime}, Received: val}
+ }
+ tt := val.Interface().(time.Time)
+ return vw.WriteDateTime(tt.Unix()*1000 + int64(tt.Nanosecond()/1e6))
+}
+
+// ByteSliceEncodeValue is the ValueEncoderFunc for []byte.
+func (dve DefaultValueEncoders) ByteSliceEncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if !val.IsValid() || val.Type() != tByteSlice {
+ return ValueEncoderError{Name: "ByteSliceEncodeValue", Types: []reflect.Type{tByteSlice}, Received: val}
+ }
+ if val.IsNil() {
+ return vw.WriteNull()
+ }
+ return vw.WriteBinary(val.Interface().([]byte))
+}
+
+// MapEncodeValue is the ValueEncoderFunc for map[string]* types.
+func (dve DefaultValueEncoders) MapEncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if !val.IsValid() || val.Kind() != reflect.Map || val.Type().Key().Kind() != reflect.String {
+ return ValueEncoderError{Name: "MapEncodeValue", Kinds: []reflect.Kind{reflect.Map}, Received: val}
+ }
+
+ if val.IsNil() {
+ // If we have a nill map but we can't WriteNull, that means we're probably trying to encode
+ // to a TopLevel document. We can't currently tell if this is what actually happened, but if
+ // there's a deeper underlying problem, the error will also be returned from WriteDocument,
+ // so just continue. The operations on a map reflection value are valid, so we can call
+ // MapKeys within mapEncodeValue without a problem.
+ err := vw.WriteNull()
+ if err == nil {
+ return nil
+ }
+ }
+
+ dw, err := vw.WriteDocument()
+ if err != nil {
+ return err
+ }
+
+ return dve.mapEncodeValue(ec, dw, val, nil)
+}
+
+// mapEncodeValue handles encoding of the values of a map. The collisionFn returns
+// true if the provided key exists, this is mainly used for inline maps in the
+// struct codec.
+func (dve DefaultValueEncoders) mapEncodeValue(ec EncodeContext, dw bsonrw.DocumentWriter, val reflect.Value, collisionFn func(string) bool) error {
+
+ encoder, err := ec.LookupEncoder(val.Type().Elem())
+ if err != nil {
+ return err
+ }
+
+ keys := val.MapKeys()
+ for _, key := range keys {
+ if collisionFn != nil && collisionFn(key.String()) {
+ return fmt.Errorf("Key %s of inlined map conflicts with a struct field name", key)
+ }
+ vw, err := dw.WriteDocumentElement(key.String())
+ if err != nil {
+ return err
+ }
+
+ if enc, ok := encoder.(ValueEncoder); ok {
+ err = enc.EncodeValue(ec, vw, val.MapIndex(key))
+ if err != nil {
+ return err
+ }
+ continue
+ }
+ err = encoder.EncodeValue(ec, vw, val.MapIndex(key))
+ if err != nil {
+ return err
+ }
+ }
+
+ return dw.WriteDocumentEnd()
+}
+
+// ArrayEncodeValue is the ValueEncoderFunc for array types.
+func (dve DefaultValueEncoders) ArrayEncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if !val.IsValid() || val.Kind() != reflect.Array {
+ return ValueEncoderError{Name: "ArrayEncodeValue", Kinds: []reflect.Kind{reflect.Array}, Received: val}
+ }
+
+ // If we have a []primitive.E we want to treat it as a document instead of as an array.
+ if val.Type().Elem() == tE {
+ dw, err := vw.WriteDocument()
+ if err != nil {
+ return err
+ }
+
+ for idx := 0; idx < val.Len(); idx++ {
+ e := val.Index(idx).Interface().(primitive.E)
+ err = encodeElement(ec, dw, e)
+ if err != nil {
+ return err
+ }
+ }
+
+ return dw.WriteDocumentEnd()
+ }
+
+ aw, err := vw.WriteArray()
+ if err != nil {
+ return err
+ }
+
+ encoder, err := ec.LookupEncoder(val.Type().Elem())
+ if err != nil {
+ return err
+ }
+
+ for idx := 0; idx < val.Len(); idx++ {
+ vw, err := aw.WriteArrayElement()
+ if err != nil {
+ return err
+ }
+
+ err = encoder.EncodeValue(ec, vw, val.Index(idx))
+ if err != nil {
+ return err
+ }
+ }
+ return aw.WriteArrayEnd()
+}
+
+// SliceEncodeValue is the ValueEncoderFunc for slice types.
+func (dve DefaultValueEncoders) SliceEncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if !val.IsValid() || val.Kind() != reflect.Slice {
+ return ValueEncoderError{Name: "SliceEncodeValue", Kinds: []reflect.Kind{reflect.Slice}, Received: val}
+ }
+
+ if val.IsNil() {
+ return vw.WriteNull()
+ }
+
+ // If we have a []primitive.E we want to treat it as a document instead of as an array.
+ if val.Type().ConvertibleTo(tD) {
+ d := val.Convert(tD).Interface().(primitive.D)
+
+ dw, err := vw.WriteDocument()
+ if err != nil {
+ return err
+ }
+
+ for _, e := range d {
+ err = encodeElement(ec, dw, e)
+ if err != nil {
+ return err
+ }
+ }
+
+ return dw.WriteDocumentEnd()
+ }
+
+ aw, err := vw.WriteArray()
+ if err != nil {
+ return err
+ }
+
+ encoder, err := ec.LookupEncoder(val.Type().Elem())
+ if err != nil {
+ return err
+ }
+
+ for idx := 0; idx < val.Len(); idx++ {
+ vw, err := aw.WriteArrayElement()
+ if err != nil {
+ return err
+ }
+
+ err = encoder.EncodeValue(ec, vw, val.Index(idx))
+ if err != nil {
+ return err
+ }
+ }
+ return aw.WriteArrayEnd()
+}
+
+// EmptyInterfaceEncodeValue is the ValueEncoderFunc for interface{}.
+func (dve DefaultValueEncoders) EmptyInterfaceEncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if !val.IsValid() || val.Type() != tEmpty {
+ return ValueEncoderError{Name: "EmptyInterfaceEncodeValue", Types: []reflect.Type{tEmpty}, Received: val}
+ }
+
+ if val.IsNil() {
+ return vw.WriteNull()
+ }
+ encoder, err := ec.LookupEncoder(val.Elem().Type())
+ if err != nil {
+ return err
+ }
+
+ return encoder.EncodeValue(ec, vw, val.Elem())
+}
+
+// ValueMarshalerEncodeValue is the ValueEncoderFunc for ValueMarshaler implementations.
+func (dve DefaultValueEncoders) ValueMarshalerEncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if !val.IsValid() || !val.Type().Implements(tValueMarshaler) {
+ return ValueEncoderError{Name: "ValueMarshalerEncodeValue", Types: []reflect.Type{tValueMarshaler}, Received: val}
+ }
+
+ fn := val.Convert(tValueMarshaler).MethodByName("MarshalBSONValue")
+ returns := fn.Call(nil)
+ if !returns[2].IsNil() {
+ return returns[2].Interface().(error)
+ }
+ t, data := returns[0].Interface().(bsontype.Type), returns[1].Interface().([]byte)
+ return bsonrw.Copier{}.CopyValueFromBytes(vw, t, data)
+}
+
+// MarshalerEncodeValue is the ValueEncoderFunc for Marshaler implementations.
+func (dve DefaultValueEncoders) MarshalerEncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if !val.IsValid() || !val.Type().Implements(tMarshaler) {
+ return ValueEncoderError{Name: "MarshalerEncodeValue", Types: []reflect.Type{tMarshaler}, Received: val}
+ }
+
+ fn := val.Convert(tMarshaler).MethodByName("MarshalBSON")
+ returns := fn.Call(nil)
+ if !returns[1].IsNil() {
+ return returns[1].Interface().(error)
+ }
+ data := returns[0].Interface().([]byte)
+ return bsonrw.Copier{}.CopyValueFromBytes(vw, bsontype.EmbeddedDocument, data)
+}
+
+// ProxyEncodeValue is the ValueEncoderFunc for Proxy implementations.
+func (dve DefaultValueEncoders) ProxyEncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if !val.IsValid() || !val.Type().Implements(tProxy) {
+ return ValueEncoderError{Name: "ProxyEncodeValue", Types: []reflect.Type{tProxy}, Received: val}
+ }
+
+ fn := val.Convert(tProxy).MethodByName("ProxyBSON")
+ returns := fn.Call(nil)
+ if !returns[1].IsNil() {
+ return returns[1].Interface().(error)
+ }
+ data := returns[0]
+ var encoder ValueEncoder
+ var err error
+ if data.Elem().IsValid() {
+ encoder, err = ec.LookupEncoder(data.Elem().Type())
+ } else {
+ encoder, err = ec.LookupEncoder(nil)
+ }
+ if err != nil {
+ return err
+ }
+ return encoder.EncodeValue(ec, vw, data.Elem())
+}
+
+// JavaScriptEncodeValue is the ValueEncoderFunc for the primitive.JavaScript type.
+func (DefaultValueEncoders) JavaScriptEncodeValue(ectx EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if !val.IsValid() || val.Type() != tJavaScript {
+ return ValueEncoderError{Name: "JavaScriptEncodeValue", Types: []reflect.Type{tJavaScript}, Received: val}
+ }
+
+ return vw.WriteJavascript(val.String())
+}
+
+// SymbolEncodeValue is the ValueEncoderFunc for the primitive.Symbol type.
+func (DefaultValueEncoders) SymbolEncodeValue(ectx EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if !val.IsValid() || val.Type() != tSymbol {
+ return ValueEncoderError{Name: "SymbolEncodeValue", Types: []reflect.Type{tSymbol}, Received: val}
+ }
+
+ return vw.WriteSymbol(val.String())
+}
+
+// BinaryEncodeValue is the ValueEncoderFunc for Binary.
+func (DefaultValueEncoders) BinaryEncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if !val.IsValid() || val.Type() != tBinary {
+ return ValueEncoderError{Name: "BinaryEncodeValue", Types: []reflect.Type{tBinary}, Received: val}
+ }
+ b := val.Interface().(primitive.Binary)
+
+ return vw.WriteBinaryWithSubtype(b.Data, b.Subtype)
+}
+
+// UndefinedEncodeValue is the ValueEncoderFunc for Undefined.
+func (DefaultValueEncoders) UndefinedEncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if !val.IsValid() || val.Type() != tUndefined {
+ return ValueEncoderError{Name: "UndefinedEncodeValue", Types: []reflect.Type{tUndefined}, Received: val}
+ }
+
+ return vw.WriteUndefined()
+}
+
+// DateTimeEncodeValue is the ValueEncoderFunc for DateTime.
+func (DefaultValueEncoders) DateTimeEncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if !val.IsValid() || val.Type() != tDateTime {
+ return ValueEncoderError{Name: "DateTimeEncodeValue", Types: []reflect.Type{tDateTime}, Received: val}
+ }
+
+ return vw.WriteDateTime(val.Int())
+}
+
+// NullEncodeValue is the ValueEncoderFunc for Null.
+func (DefaultValueEncoders) NullEncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if !val.IsValid() || val.Type() != tNull {
+ return ValueEncoderError{Name: "NullEncodeValue", Types: []reflect.Type{tNull}, Received: val}
+ }
+
+ return vw.WriteNull()
+}
+
+// RegexEncodeValue is the ValueEncoderFunc for Regex.
+func (DefaultValueEncoders) RegexEncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if !val.IsValid() || val.Type() != tRegex {
+ return ValueEncoderError{Name: "RegexEncodeValue", Types: []reflect.Type{tRegex}, Received: val}
+ }
+
+ regex := val.Interface().(primitive.Regex)
+
+ return vw.WriteRegex(regex.Pattern, regex.Options)
+}
+
+// DBPointerEncodeValue is the ValueEncoderFunc for DBPointer.
+func (DefaultValueEncoders) DBPointerEncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if !val.IsValid() || val.Type() != tDBPointer {
+ return ValueEncoderError{Name: "DBPointerEncodeValue", Types: []reflect.Type{tDBPointer}, Received: val}
+ }
+
+ dbp := val.Interface().(primitive.DBPointer)
+
+ return vw.WriteDBPointer(dbp.DB, dbp.Pointer)
+}
+
+// TimestampEncodeValue is the ValueEncoderFunc for Timestamp.
+func (DefaultValueEncoders) TimestampEncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if !val.IsValid() || val.Type() != tTimestamp {
+ return ValueEncoderError{Name: "TimestampEncodeValue", Types: []reflect.Type{tTimestamp}, Received: val}
+ }
+
+ ts := val.Interface().(primitive.Timestamp)
+
+ return vw.WriteTimestamp(ts.T, ts.I)
+}
+
+// MinKeyEncodeValue is the ValueEncoderFunc for MinKey.
+func (DefaultValueEncoders) MinKeyEncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if !val.IsValid() || val.Type() != tMinKey {
+ return ValueEncoderError{Name: "MinKeyEncodeValue", Types: []reflect.Type{tMinKey}, Received: val}
+ }
+
+ return vw.WriteMinKey()
+}
+
+// MaxKeyEncodeValue is the ValueEncoderFunc for MaxKey.
+func (DefaultValueEncoders) MaxKeyEncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if !val.IsValid() || val.Type() != tMaxKey {
+ return ValueEncoderError{Name: "MaxKeyEncodeValue", Types: []reflect.Type{tMaxKey}, Received: val}
+ }
+
+ return vw.WriteMaxKey()
+}
+
+// CoreDocumentEncodeValue is the ValueEncoderFunc for bsoncore.Document.
+func (DefaultValueEncoders) CoreDocumentEncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if !val.IsValid() || val.Type() != tCoreDocument {
+ return ValueEncoderError{Name: "CoreDocumentEncodeValue", Types: []reflect.Type{tCoreDocument}, Received: val}
+ }
+
+ cdoc := val.Interface().(bsoncore.Document)
+
+ return bsonrw.Copier{}.CopyDocumentFromBytes(vw, cdoc)
+}
+
+// CodeWithScopeEncodeValue is the ValueEncoderFunc for CodeWithScope.
+func (dve DefaultValueEncoders) CodeWithScopeEncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if !val.IsValid() || val.Type() != tCodeWithScope {
+ return ValueEncoderError{Name: "CodeWithScopeEncodeValue", Types: []reflect.Type{tCodeWithScope}, Received: val}
+ }
+
+ cws := val.Interface().(primitive.CodeWithScope)
+
+ dw, err := vw.WriteCodeWithScope(string(cws.Code))
+ if err != nil {
+ return err
+ }
+
+ sw := sliceWriterPool.Get().(*bsonrw.SliceWriter)
+ defer sliceWriterPool.Put(sw)
+ *sw = (*sw)[:0]
+
+ scopeVW := bvwPool.Get(sw)
+ defer bvwPool.Put(scopeVW)
+
+ encoder, err := ec.LookupEncoder(reflect.TypeOf(cws.Scope))
+ if err != nil {
+ return err
+ }
+
+ err = encoder.EncodeValue(ec, scopeVW, reflect.ValueOf(cws.Scope))
+ if err != nil {
+ return err
+ }
+
+ err = bsonrw.Copier{}.CopyBytesToDocumentWriter(dw, *sw)
+ if err != nil {
+ return err
+ }
+ return dw.WriteDocumentEnd()
+}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/doc.go b/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/doc.go
new file mode 100644
index 0000000..978511c
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/doc.go
@@ -0,0 +1,61 @@
+// Package bsoncodec provides a system for encoding values to BSON representations and decoding
+// values from BSON representations. This package considers both binary BSON and ExtendedJSON as
+// BSON representations. The types in this package enable a flexible system for handling this
+// encoding and decoding.
+//
+// The codec system is composed of two parts:
+//
+// 1) ValueEncoders and ValueDecoders that handle encoding and decoding Go values to and from BSON
+// representations.
+//
+// 2) A Registry that holds these ValueEncoders and ValueDecoders and provides methods for
+// retrieving them.
+//
+// ValueEncoders and ValueDecoders
+//
+// The ValueEncoder interface is implemented by types that can encode a provided Go type to BSON.
+// The value to encode is provided as a reflect.Value and a bsonrw.ValueWriter is used within the
+// EncodeValue method to actually create the BSON representation. For convenience, ValueEncoderFunc
+// is provided to allow use of a function with the correct signature as a ValueEncoder. An
+// EncodeContext instance is provided to allow implementations to lookup further ValueEncoders and
+// to provide configuration information.
+//
+// The ValueDecoder interface is the inverse of the ValueEncoder. Implementations should ensure that
+// the value they receive is settable. Similar to ValueEncoderFunc, ValueDecoderFunc is provided to
+// allow the use of a function with the correct signature as a ValueDecoder. A DecodeContext
+// instance is provided and serves similar functionality to the EncodeContext.
+//
+// Registry and RegistryBuilder
+//
+// A Registry is an immutable store for ValueEncoders, ValueDecoders, and a type map. For looking up
+// ValueEncoders and Decoders the Registry first attempts to find a ValueEncoder or ValueDecoder for
+// the type provided; if one cannot be found it then checks to see if a registered ValueEncoder or
+// ValueDecoder exists for an interface the type implements. Finally, the reflect.Kind of the type
+// is used to lookup a default ValueEncoder or ValueDecoder for that kind. If no ValueEncoder or
+// ValueDecoder can be found, an error is returned.
+//
+// The Registry also holds a type map. This allows users to retrieve the Go type that should be used
+// when decoding a BSON value into an empty interface. This is primarily only used for the empty
+// interface ValueDecoder.
+//
+// A RegistryBuilder is used to construct a Registry. The Register methods are used to associate
+// either a reflect.Type or a reflect.Kind with a ValueEncoder or ValueDecoder. A RegistryBuilder
+// returned from NewRegistryBuilder contains no registered ValueEncoders nor ValueDecoders and
+// contains an empty type map.
+//
+// The RegisterTypeMapEntry method handles associating a BSON type with a Go type. For example, if
+// you want to decode BSON int64 and int32 values into Go int instances, you would do the following:
+//
+// var regbuilder *RegistryBuilder = ... intType := reflect.TypeOf(int(0))
+// regbuilder.RegisterTypeMapEntry(bsontype.Int64, intType).RegisterTypeMapEntry(bsontype.Int32,
+// intType)
+//
+// DefaultValueEncoders and DefaultValueDecoders
+//
+// The DefaultValueEncoders and DefaultValueDecoders types provide a full set of ValueEncoders and
+// ValueDecoders for handling a wide range of Go types, including all of the types within the
+// primitive package. To make registering these codecs easier, a helper method on each type is
+// provided. For the DefaultValueEncoders type the method is called RegisterDefaultEncoders and for
+// the DefaultValueDecoders type the method is called RegisterDefaultDecoders, this method also
+// handles registering type map entries for each BSON type.
+package bsoncodec
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/mode.go b/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/mode.go
new file mode 100644
index 0000000..fbd9f0a
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/mode.go
@@ -0,0 +1,65 @@
+// 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 bsoncodec
+
+import "fmt"
+
+type mode int
+
+const (
+ _ mode = iota
+ mTopLevel
+ mDocument
+ mArray
+ mValue
+ mElement
+ mCodeWithScope
+ mSpacer
+)
+
+func (m mode) String() string {
+ var str string
+
+ switch m {
+ case mTopLevel:
+ str = "TopLevel"
+ case mDocument:
+ str = "DocumentMode"
+ case mArray:
+ str = "ArrayMode"
+ case mValue:
+ str = "ValueMode"
+ case mElement:
+ str = "ElementMode"
+ case mCodeWithScope:
+ str = "CodeWithScopeMode"
+ case mSpacer:
+ str = "CodeWithScopeSpacerFrame"
+ default:
+ str = "UnknownMode"
+ }
+
+ return str
+}
+
+// TransitionError is an error returned when an invalid progressing a
+// ValueReader or ValueWriter state machine occurs.
+type TransitionError struct {
+ parent mode
+ current mode
+ destination mode
+}
+
+func (te TransitionError) Error() string {
+ if te.destination == mode(0) {
+ return fmt.Sprintf("invalid state transition: cannot read/write value while in %s", te.current)
+ }
+ if te.parent == mode(0) {
+ return fmt.Sprintf("invalid state transition: %s -> %s", te.current, te.destination)
+ }
+ return fmt.Sprintf("invalid state transition: %s -> %s; parent %s", te.current, te.destination, te.parent)
+}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/pointer_codec.go b/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/pointer_codec.go
new file mode 100644
index 0000000..b78ec0a
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/pointer_codec.go
@@ -0,0 +1,110 @@
+// 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 bsoncodec
+
+import (
+ "reflect"
+ "sync"
+
+ "github.com/mongodb/mongo-go-driver/bson/bsonrw"
+ "github.com/mongodb/mongo-go-driver/bson/bsontype"
+)
+
+var defaultPointerCodec = &PointerCodec{
+ ecache: make(map[reflect.Type]ValueEncoder),
+ dcache: make(map[reflect.Type]ValueDecoder),
+}
+
+var _ ValueEncoder = &PointerCodec{}
+var _ ValueDecoder = &PointerCodec{}
+
+// PointerCodec is the Codec used for pointers.
+type PointerCodec struct {
+ ecache map[reflect.Type]ValueEncoder
+ dcache map[reflect.Type]ValueDecoder
+ l sync.RWMutex
+}
+
+// NewPointerCodec returns a PointerCodec that has been initialized.
+func NewPointerCodec() *PointerCodec {
+ return &PointerCodec{
+ ecache: make(map[reflect.Type]ValueEncoder),
+ dcache: make(map[reflect.Type]ValueDecoder),
+ }
+}
+
+// EncodeValue handles encoding a pointer by either encoding it to BSON Null if the pointer is nil
+// or looking up an encoder for the type of value the pointer points to.
+func (pc *PointerCodec) EncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if val.Kind() != reflect.Ptr {
+ if !val.IsValid() {
+ return vw.WriteNull()
+ }
+ return ValueEncoderError{Name: "PointerCodec.EncodeValue", Kinds: []reflect.Kind{reflect.Ptr}, Received: val}
+ }
+
+ if val.IsNil() {
+ return vw.WriteNull()
+ }
+
+ pc.l.RLock()
+ enc, ok := pc.ecache[val.Type()]
+ pc.l.RUnlock()
+ if ok {
+ if enc == nil {
+ return ErrNoEncoder{Type: val.Type()}
+ }
+ return enc.EncodeValue(ec, vw, val.Elem())
+ }
+
+ enc, err := ec.LookupEncoder(val.Type().Elem())
+ pc.l.Lock()
+ pc.ecache[val.Type()] = enc
+ pc.l.Unlock()
+ if err != nil {
+ return err
+ }
+
+ return enc.EncodeValue(ec, vw, val.Elem())
+}
+
+// DecodeValue handles decoding a pointer by looking up a decoder for the type it points to and
+// using that to decode. If the BSON value is Null, this method will set the pointer to nil.
+func (pc *PointerCodec) DecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ if !val.CanSet() || val.Kind() != reflect.Ptr {
+ return ValueDecoderError{Name: "PointerCodec.DecodeValue", Kinds: []reflect.Kind{reflect.Ptr}, Received: val}
+ }
+
+ if vr.Type() == bsontype.Null {
+ val.Set(reflect.Zero(val.Type()))
+ return vr.ReadNull()
+ }
+
+ if val.IsNil() {
+ val.Set(reflect.New(val.Type().Elem()))
+ }
+
+ pc.l.RLock()
+ dec, ok := pc.dcache[val.Type()]
+ pc.l.RUnlock()
+ if ok {
+ if dec == nil {
+ return ErrNoDecoder{Type: val.Type()}
+ }
+ return dec.DecodeValue(dc, vr, val.Elem())
+ }
+
+ dec, err := dc.LookupDecoder(val.Type().Elem())
+ pc.l.Lock()
+ pc.dcache[val.Type()] = dec
+ pc.l.Unlock()
+ if err != nil {
+ return err
+ }
+
+ return dec.DecodeValue(dc, vr, val.Elem())
+}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/proxy.go b/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/proxy.go
new file mode 100644
index 0000000..4cf2b01
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/proxy.go
@@ -0,0 +1,14 @@
+// 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 bsoncodec
+
+// Proxy is an interface implemented by types that cannot themselves be directly encoded. Types
+// that implement this interface with have ProxyBSON called during the encoding process and that
+// value will be encoded in place for the implementer.
+type Proxy interface {
+ ProxyBSON() (interface{}, error)
+}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/registry.go b/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/registry.go
new file mode 100644
index 0000000..741deb8
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/registry.go
@@ -0,0 +1,384 @@
+// 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 bsoncodec
+
+import (
+ "errors"
+ "reflect"
+ "sync"
+
+ "github.com/mongodb/mongo-go-driver/bson/bsontype"
+)
+
+// ErrNilType is returned when nil is passed to either LookupEncoder or LookupDecoder.
+var ErrNilType = errors.New("cannot perform a decoder lookup on <nil>")
+
+// ErrNotPointer is returned when a non-pointer type is provided to LookupDecoder.
+var ErrNotPointer = errors.New("non-pointer provided to LookupDecoder")
+
+// ErrNoEncoder is returned when there wasn't an encoder available for a type.
+type ErrNoEncoder struct {
+ Type reflect.Type
+}
+
+func (ene ErrNoEncoder) Error() string {
+ if ene.Type == nil {
+ return "no encoder found for <nil>"
+ }
+ return "no encoder found for " + ene.Type.String()
+}
+
+// ErrNoDecoder is returned when there wasn't a decoder available for a type.
+type ErrNoDecoder struct {
+ Type reflect.Type
+}
+
+func (end ErrNoDecoder) Error() string {
+ return "no decoder found for " + end.Type.String()
+}
+
+// ErrNoTypeMapEntry is returned when there wasn't a type available for the provided BSON type.
+type ErrNoTypeMapEntry struct {
+ Type bsontype.Type
+}
+
+func (entme ErrNoTypeMapEntry) Error() string {
+ return "no type map entry found for " + entme.Type.String()
+}
+
+// ErrNotInterface is returned when the provided type is not an interface.
+var ErrNotInterface = errors.New("The provided type is not an interface")
+
+var defaultRegistry *Registry
+
+func init() {
+ defaultRegistry = buildDefaultRegistry()
+}
+
+// A RegistryBuilder is used to build a Registry. This type is not goroutine
+// safe.
+type RegistryBuilder struct {
+ typeEncoders map[reflect.Type]ValueEncoder
+ interfaceEncoders []interfaceValueEncoder
+ kindEncoders map[reflect.Kind]ValueEncoder
+
+ typeDecoders map[reflect.Type]ValueDecoder
+ interfaceDecoders []interfaceValueDecoder
+ kindDecoders map[reflect.Kind]ValueDecoder
+
+ typeMap map[bsontype.Type]reflect.Type
+}
+
+// A Registry is used to store and retrieve codecs for types and interfaces. This type is the main
+// typed passed around and Encoders and Decoders are constructed from it.
+type Registry struct {
+ typeEncoders map[reflect.Type]ValueEncoder
+ typeDecoders map[reflect.Type]ValueDecoder
+
+ interfaceEncoders []interfaceValueEncoder
+ interfaceDecoders []interfaceValueDecoder
+
+ kindEncoders map[reflect.Kind]ValueEncoder
+ kindDecoders map[reflect.Kind]ValueDecoder
+
+ typeMap map[bsontype.Type]reflect.Type
+
+ mu sync.RWMutex
+}
+
+// NewRegistryBuilder creates a new empty RegistryBuilder.
+func NewRegistryBuilder() *RegistryBuilder {
+ return &RegistryBuilder{
+ typeEncoders: make(map[reflect.Type]ValueEncoder),
+ typeDecoders: make(map[reflect.Type]ValueDecoder),
+
+ interfaceEncoders: make([]interfaceValueEncoder, 0),
+ interfaceDecoders: make([]interfaceValueDecoder, 0),
+
+ kindEncoders: make(map[reflect.Kind]ValueEncoder),
+ kindDecoders: make(map[reflect.Kind]ValueDecoder),
+
+ typeMap: make(map[bsontype.Type]reflect.Type),
+ }
+}
+
+func buildDefaultRegistry() *Registry {
+ rb := NewRegistryBuilder()
+ defaultValueEncoders.RegisterDefaultEncoders(rb)
+ defaultValueDecoders.RegisterDefaultDecoders(rb)
+ return rb.Build()
+}
+
+// RegisterCodec will register the provided ValueCodec for the provided type.
+func (rb *RegistryBuilder) RegisterCodec(t reflect.Type, codec ValueCodec) *RegistryBuilder {
+ rb.RegisterEncoder(t, codec)
+ rb.RegisterDecoder(t, codec)
+ return rb
+}
+
+// RegisterEncoder will register the provided ValueEncoder to the provided type.
+//
+// The type registered will be used directly, so an encoder can be registered for a type and a
+// different encoder can be registered for a pointer to that type.
+func (rb *RegistryBuilder) RegisterEncoder(t reflect.Type, enc ValueEncoder) *RegistryBuilder {
+ if t == tEmpty {
+ rb.typeEncoders[t] = enc
+ return rb
+ }
+ switch t.Kind() {
+ case reflect.Interface:
+ for idx, ir := range rb.interfaceEncoders {
+ if ir.i == t {
+ rb.interfaceEncoders[idx].ve = enc
+ return rb
+ }
+ }
+
+ rb.interfaceEncoders = append(rb.interfaceEncoders, interfaceValueEncoder{i: t, ve: enc})
+ default:
+ rb.typeEncoders[t] = enc
+ }
+ return rb
+}
+
+// RegisterDecoder will register the provided ValueDecoder to the provided type.
+//
+// The type registered will be used directly, so a decoder can be registered for a type and a
+// different decoder can be registered for a pointer to that type.
+func (rb *RegistryBuilder) RegisterDecoder(t reflect.Type, dec ValueDecoder) *RegistryBuilder {
+ if t == nil {
+ rb.typeDecoders[nil] = dec
+ return rb
+ }
+ if t == tEmpty {
+ rb.typeDecoders[t] = dec
+ return rb
+ }
+ switch t.Kind() {
+ case reflect.Interface:
+ for idx, ir := range rb.interfaceDecoders {
+ if ir.i == t {
+ rb.interfaceDecoders[idx].vd = dec
+ return rb
+ }
+ }
+
+ rb.interfaceDecoders = append(rb.interfaceDecoders, interfaceValueDecoder{i: t, vd: dec})
+ default:
+ rb.typeDecoders[t] = dec
+ }
+ return rb
+}
+
+// RegisterDefaultEncoder will registr the provided ValueEncoder to the provided
+// kind.
+func (rb *RegistryBuilder) RegisterDefaultEncoder(kind reflect.Kind, enc ValueEncoder) *RegistryBuilder {
+ rb.kindEncoders[kind] = enc
+ return rb
+}
+
+// RegisterDefaultDecoder will register the provided ValueDecoder to the
+// provided kind.
+func (rb *RegistryBuilder) RegisterDefaultDecoder(kind reflect.Kind, dec ValueDecoder) *RegistryBuilder {
+ rb.kindDecoders[kind] = dec
+ return rb
+}
+
+// RegisterTypeMapEntry will register the provided type to the BSON type. The primary usage for this
+// mapping is decoding situations where an empty interface is used and a default type needs to be
+// created and decoded into.
+//
+// NOTE: It is unlikely that registering a type for BSON Embedded Document is actually desired. By
+// registering a type map entry for BSON Embedded Document the type registered will be used in any
+// case where a BSON Embedded Document will be decoded into an empty interface. For example, if you
+// register primitive.M, the EmptyInterface decoder will always use primitive.M, even if an ancestor
+// was a primitive.D.
+func (rb *RegistryBuilder) RegisterTypeMapEntry(bt bsontype.Type, rt reflect.Type) *RegistryBuilder {
+ rb.typeMap[bt] = rt
+ return rb
+}
+
+// Build creates a Registry from the current state of this RegistryBuilder.
+func (rb *RegistryBuilder) Build() *Registry {
+ registry := new(Registry)
+
+ registry.typeEncoders = make(map[reflect.Type]ValueEncoder)
+ for t, enc := range rb.typeEncoders {
+ registry.typeEncoders[t] = enc
+ }
+
+ registry.typeDecoders = make(map[reflect.Type]ValueDecoder)
+ for t, dec := range rb.typeDecoders {
+ registry.typeDecoders[t] = dec
+ }
+
+ registry.interfaceEncoders = make([]interfaceValueEncoder, len(rb.interfaceEncoders))
+ copy(registry.interfaceEncoders, rb.interfaceEncoders)
+
+ registry.interfaceDecoders = make([]interfaceValueDecoder, len(rb.interfaceDecoders))
+ copy(registry.interfaceDecoders, rb.interfaceDecoders)
+
+ registry.kindEncoders = make(map[reflect.Kind]ValueEncoder)
+ for kind, enc := range rb.kindEncoders {
+ registry.kindEncoders[kind] = enc
+ }
+
+ registry.kindDecoders = make(map[reflect.Kind]ValueDecoder)
+ for kind, dec := range rb.kindDecoders {
+ registry.kindDecoders[kind] = dec
+ }
+
+ registry.typeMap = make(map[bsontype.Type]reflect.Type)
+ for bt, rt := range rb.typeMap {
+ registry.typeMap[bt] = rt
+ }
+
+ return registry
+}
+
+// LookupEncoder will inspect the registry for an encoder that satisfies the
+// type provided. An encoder registered for a specific type will take
+// precedence over an encoder registered for an interface the type satisfies,
+// which takes precedence over an encoder for the reflect.Kind of the value. If
+// no encoder can be found, an error is returned.
+func (r *Registry) LookupEncoder(t reflect.Type) (ValueEncoder, error) {
+ encodererr := ErrNoEncoder{Type: t}
+ r.mu.RLock()
+ enc, found := r.lookupTypeEncoder(t)
+ r.mu.RUnlock()
+ if found {
+ if enc == nil {
+ return nil, ErrNoEncoder{Type: t}
+ }
+ return enc, nil
+ }
+
+ enc, found = r.lookupInterfaceEncoder(t)
+ if found {
+ r.mu.Lock()
+ r.typeEncoders[t] = enc
+ r.mu.Unlock()
+ return enc, nil
+ }
+
+ if t == nil {
+ r.mu.Lock()
+ r.typeEncoders[t] = nil
+ r.mu.Unlock()
+ return nil, encodererr
+ }
+
+ enc, found = r.kindEncoders[t.Kind()]
+ if !found {
+ r.mu.Lock()
+ r.typeEncoders[t] = nil
+ r.mu.Unlock()
+ return nil, encodererr
+ }
+
+ r.mu.Lock()
+ r.typeEncoders[t] = enc
+ r.mu.Unlock()
+ return enc, nil
+}
+
+func (r *Registry) lookupTypeEncoder(t reflect.Type) (ValueEncoder, bool) {
+ enc, found := r.typeEncoders[t]
+ return enc, found
+}
+
+func (r *Registry) lookupInterfaceEncoder(t reflect.Type) (ValueEncoder, bool) {
+ if t == nil {
+ return nil, false
+ }
+ for _, ienc := range r.interfaceEncoders {
+ if !t.Implements(ienc.i) {
+ continue
+ }
+
+ return ienc.ve, true
+ }
+ return nil, false
+}
+
+// LookupDecoder will inspect the registry for a decoder that satisfies the
+// type provided. A decoder registered for a specific type will take
+// precedence over a decoder registered for an interface the type satisfies,
+// which takes precedence over a decoder for the reflect.Kind of the value. If
+// no decoder can be found, an error is returned.
+func (r *Registry) LookupDecoder(t reflect.Type) (ValueDecoder, error) {
+ if t == nil {
+ return nil, ErrNilType
+ }
+ decodererr := ErrNoDecoder{Type: t}
+ r.mu.RLock()
+ dec, found := r.lookupTypeDecoder(t)
+ r.mu.RUnlock()
+ if found {
+ if dec == nil {
+ return nil, ErrNoDecoder{Type: t}
+ }
+ return dec, nil
+ }
+
+ dec, found = r.lookupInterfaceDecoder(t)
+ if found {
+ r.mu.Lock()
+ r.typeDecoders[t] = dec
+ r.mu.Unlock()
+ return dec, nil
+ }
+
+ dec, found = r.kindDecoders[t.Kind()]
+ if !found {
+ r.mu.Lock()
+ r.typeDecoders[t] = nil
+ r.mu.Unlock()
+ return nil, decodererr
+ }
+
+ r.mu.Lock()
+ r.typeDecoders[t] = dec
+ r.mu.Unlock()
+ return dec, nil
+}
+
+func (r *Registry) lookupTypeDecoder(t reflect.Type) (ValueDecoder, bool) {
+ dec, found := r.typeDecoders[t]
+ return dec, found
+}
+
+func (r *Registry) lookupInterfaceDecoder(t reflect.Type) (ValueDecoder, bool) {
+ for _, idec := range r.interfaceDecoders {
+ if !t.Implements(idec.i) && !reflect.PtrTo(t).Implements(idec.i) {
+ continue
+ }
+
+ return idec.vd, true
+ }
+ return nil, false
+}
+
+// LookupTypeMapEntry inspects the registry's type map for a Go type for the corresponding BSON
+// type. If no type is found, ErrNoTypeMapEntry is returned.
+func (r *Registry) LookupTypeMapEntry(bt bsontype.Type) (reflect.Type, error) {
+ t, ok := r.typeMap[bt]
+ if !ok || t == nil {
+ return nil, ErrNoTypeMapEntry{Type: bt}
+ }
+ return t, nil
+}
+
+type interfaceValueEncoder struct {
+ i reflect.Type
+ ve ValueEncoder
+}
+
+type interfaceValueDecoder struct {
+ i reflect.Type
+ vd ValueDecoder
+}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/struct_codec.go b/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/struct_codec.go
new file mode 100644
index 0000000..34f3b4c
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/struct_codec.go
@@ -0,0 +1,357 @@
+// 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 bsoncodec
+
+import (
+ "errors"
+ "fmt"
+ "reflect"
+ "sync"
+
+ "github.com/mongodb/mongo-go-driver/bson/bsonrw"
+ "github.com/mongodb/mongo-go-driver/bson/bsontype"
+)
+
+var defaultStructCodec = &StructCodec{
+ cache: make(map[reflect.Type]*structDescription),
+ parser: DefaultStructTagParser,
+}
+
+// Zeroer allows custom struct types to implement a report of zero
+// state. All struct types that don't implement Zeroer or where IsZero
+// returns false are considered to be not zero.
+type Zeroer interface {
+ IsZero() bool
+}
+
+// StructCodec is the Codec used for struct values.
+type StructCodec struct {
+ cache map[reflect.Type]*structDescription
+ l sync.RWMutex
+ parser StructTagParser
+}
+
+var _ ValueEncoder = &StructCodec{}
+var _ ValueDecoder = &StructCodec{}
+
+// NewStructCodec returns a StructCodec that uses p for struct tag parsing.
+func NewStructCodec(p StructTagParser) (*StructCodec, error) {
+ if p == nil {
+ return nil, errors.New("a StructTagParser must be provided to NewStructCodec")
+ }
+
+ return &StructCodec{
+ cache: make(map[reflect.Type]*structDescription),
+ parser: p,
+ }, nil
+}
+
+// EncodeValue handles encoding generic struct types.
+func (sc *StructCodec) EncodeValue(r EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if !val.IsValid() || val.Kind() != reflect.Struct {
+ return ValueEncoderError{Name: "StructCodec.EncodeValue", Kinds: []reflect.Kind{reflect.Struct}, Received: val}
+ }
+
+ sd, err := sc.describeStruct(r.Registry, val.Type())
+ if err != nil {
+ return err
+ }
+
+ dw, err := vw.WriteDocument()
+ if err != nil {
+ return err
+ }
+ var rv reflect.Value
+ for _, desc := range sd.fl {
+ if desc.inline == nil {
+ rv = val.Field(desc.idx)
+ } else {
+ rv = val.FieldByIndex(desc.inline)
+ }
+
+ if desc.encoder == nil {
+ return ErrNoEncoder{Type: rv.Type()}
+ }
+
+ encoder := desc.encoder
+
+ iszero := sc.isZero
+ if iz, ok := encoder.(CodecZeroer); ok {
+ iszero = iz.IsTypeZero
+ }
+
+ if desc.omitEmpty && iszero(rv.Interface()) {
+ continue
+ }
+
+ vw2, err := dw.WriteDocumentElement(desc.name)
+ if err != nil {
+ return err
+ }
+
+ ectx := EncodeContext{Registry: r.Registry, MinSize: desc.minSize}
+ err = encoder.EncodeValue(ectx, vw2, rv)
+ if err != nil {
+ return err
+ }
+ }
+
+ if sd.inlineMap >= 0 {
+ rv := val.Field(sd.inlineMap)
+ collisionFn := func(key string) bool {
+ _, exists := sd.fm[key]
+ return exists
+ }
+
+ return defaultValueEncoders.mapEncodeValue(r, dw, rv, collisionFn)
+ }
+
+ return dw.WriteDocumentEnd()
+}
+
+// DecodeValue implements the Codec interface.
+func (sc *StructCodec) DecodeValue(r DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ if !val.CanSet() || val.Kind() != reflect.Struct {
+ return ValueDecoderError{Name: "StructCodec.DecodeValue", Kinds: []reflect.Kind{reflect.Struct}, Received: val}
+ }
+
+ switch vr.Type() {
+ case bsontype.Type(0), bsontype.EmbeddedDocument:
+ default:
+ return fmt.Errorf("cannot decode %v into a %s", vr.Type(), val.Type())
+ }
+
+ sd, err := sc.describeStruct(r.Registry, val.Type())
+ if err != nil {
+ return err
+ }
+
+ var decoder ValueDecoder
+ var inlineMap reflect.Value
+ if sd.inlineMap >= 0 {
+ inlineMap = val.Field(sd.inlineMap)
+ if inlineMap.IsNil() {
+ inlineMap.Set(reflect.MakeMap(inlineMap.Type()))
+ }
+ decoder, err = r.LookupDecoder(inlineMap.Type().Elem())
+ if err != nil {
+ return err
+ }
+ }
+
+ dr, err := vr.ReadDocument()
+ if err != nil {
+ return err
+ }
+
+ for {
+ name, vr, err := dr.ReadElement()
+ if err == bsonrw.ErrEOD {
+ break
+ }
+ if err != nil {
+ return err
+ }
+
+ fd, exists := sd.fm[name]
+ if !exists {
+ if sd.inlineMap < 0 {
+ // The encoding/json package requires a flag to return on error for non-existent fields.
+ // This functionality seems appropriate for the struct codec.
+ err = vr.Skip()
+ if err != nil {
+ return err
+ }
+ continue
+ }
+
+ elem := reflect.New(inlineMap.Type().Elem()).Elem()
+ err = decoder.DecodeValue(r, vr, elem)
+ if err != nil {
+ return err
+ }
+ inlineMap.SetMapIndex(reflect.ValueOf(name), elem)
+ continue
+ }
+
+ var field reflect.Value
+ if fd.inline == nil {
+ field = val.Field(fd.idx)
+ } else {
+ field = val.FieldByIndex(fd.inline)
+ }
+
+ if !field.CanSet() { // Being settable is a super set of being addressable.
+ return fmt.Errorf("cannot decode element '%s' into field %v; it is not settable", name, field)
+ }
+ if field.Kind() == reflect.Ptr && field.IsNil() {
+ field.Set(reflect.New(field.Type().Elem()))
+ }
+ field = field.Addr()
+
+ dctx := DecodeContext{Registry: r.Registry, Truncate: fd.truncate}
+ if fd.decoder == nil {
+ return ErrNoDecoder{Type: field.Elem().Type()}
+ }
+
+ if decoder, ok := fd.decoder.(ValueDecoder); ok {
+ err = decoder.DecodeValue(dctx, vr, field.Elem())
+ if err != nil {
+ return err
+ }
+ continue
+ }
+ err = fd.decoder.DecodeValue(dctx, vr, field)
+ if err != nil {
+ return err
+ }
+ }
+
+ return nil
+}
+
+func (sc *StructCodec) isZero(i interface{}) bool {
+ v := reflect.ValueOf(i)
+
+ // check the value validity
+ if !v.IsValid() {
+ return true
+ }
+
+ if z, ok := v.Interface().(Zeroer); ok && (v.Kind() != reflect.Ptr || !v.IsNil()) {
+ return z.IsZero()
+ }
+
+ switch v.Kind() {
+ case reflect.Array, reflect.Map, reflect.Slice, reflect.String:
+ return v.Len() == 0
+ case reflect.Bool:
+ return !v.Bool()
+ case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+ return v.Int() == 0
+ case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+ return v.Uint() == 0
+ case reflect.Float32, reflect.Float64:
+ return v.Float() == 0
+ case reflect.Interface, reflect.Ptr:
+ return v.IsNil()
+ }
+
+ return false
+}
+
+type structDescription struct {
+ fm map[string]fieldDescription
+ fl []fieldDescription
+ inlineMap int
+}
+
+type fieldDescription struct {
+ name string
+ idx int
+ omitEmpty bool
+ minSize bool
+ truncate bool
+ inline []int
+ encoder ValueEncoder
+ decoder ValueDecoder
+}
+
+func (sc *StructCodec) describeStruct(r *Registry, t reflect.Type) (*structDescription, error) {
+ // We need to analyze the struct, including getting the tags, collecting
+ // information about inlining, and create a map of the field name to the field.
+ sc.l.RLock()
+ ds, exists := sc.cache[t]
+ sc.l.RUnlock()
+ if exists {
+ return ds, nil
+ }
+
+ numFields := t.NumField()
+ sd := &structDescription{
+ fm: make(map[string]fieldDescription, numFields),
+ fl: make([]fieldDescription, 0, numFields),
+ inlineMap: -1,
+ }
+
+ for i := 0; i < numFields; i++ {
+ sf := t.Field(i)
+ if sf.PkgPath != "" {
+ // unexported, ignore
+ continue
+ }
+
+ encoder, err := r.LookupEncoder(sf.Type)
+ if err != nil {
+ encoder = nil
+ }
+ decoder, err := r.LookupDecoder(sf.Type)
+ if err != nil {
+ decoder = nil
+ }
+
+ description := fieldDescription{idx: i, encoder: encoder, decoder: decoder}
+
+ stags, err := sc.parser.ParseStructTags(sf)
+ if err != nil {
+ return nil, err
+ }
+ if stags.Skip {
+ continue
+ }
+ description.name = stags.Name
+ description.omitEmpty = stags.OmitEmpty
+ description.minSize = stags.MinSize
+ description.truncate = stags.Truncate
+
+ if stags.Inline {
+ switch sf.Type.Kind() {
+ case reflect.Map:
+ if sd.inlineMap >= 0 {
+ return nil, errors.New("(struct " + t.String() + ") multiple inline maps")
+ }
+ if sf.Type.Key() != tString {
+ return nil, errors.New("(struct " + t.String() + ") inline map must have a string keys")
+ }
+ sd.inlineMap = description.idx
+ case reflect.Struct:
+ inlinesf, err := sc.describeStruct(r, sf.Type)
+ if err != nil {
+ return nil, err
+ }
+ for _, fd := range inlinesf.fl {
+ if _, exists := sd.fm[fd.name]; exists {
+ return nil, fmt.Errorf("(struct %s) duplicated key %s", t.String(), fd.name)
+ }
+ if fd.inline == nil {
+ fd.inline = []int{i, fd.idx}
+ } else {
+ fd.inline = append([]int{i}, fd.inline...)
+ }
+ sd.fm[fd.name] = fd
+ sd.fl = append(sd.fl, fd)
+ }
+ default:
+ return nil, fmt.Errorf("(struct %s) inline fields must be either a struct or a map", t.String())
+ }
+ continue
+ }
+
+ if _, exists := sd.fm[description.name]; exists {
+ return nil, fmt.Errorf("struct %s) duplicated key %s", t.String(), description.name)
+ }
+
+ sd.fm[description.name] = description
+ sd.fl = append(sd.fl, description)
+ }
+
+ sc.l.Lock()
+ sc.cache[t] = sd
+ sc.l.Unlock()
+
+ return sd, nil
+}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/struct_tag_parser.go b/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/struct_tag_parser.go
new file mode 100644
index 0000000..69d0ae4
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/struct_tag_parser.go
@@ -0,0 +1,119 @@
+// 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 bsoncodec
+
+import (
+ "reflect"
+ "strings"
+)
+
+// StructTagParser returns the struct tags for a given struct field.
+type StructTagParser interface {
+ ParseStructTags(reflect.StructField) (StructTags, error)
+}
+
+// StructTagParserFunc is an adapter that allows a generic function to be used
+// as a StructTagParser.
+type StructTagParserFunc func(reflect.StructField) (StructTags, error)
+
+// ParseStructTags implements the StructTagParser interface.
+func (stpf StructTagParserFunc) ParseStructTags(sf reflect.StructField) (StructTags, error) {
+ return stpf(sf)
+}
+
+// StructTags represents the struct tag fields that the StructCodec uses during
+// the encoding and decoding process.
+//
+// In the case of a struct, the lowercased field name is used as the key for each exported
+// field but this behavior may be changed using a struct tag. The tag may also contain flags to
+// adjust the marshalling behavior for the field.
+//
+// The properties are defined below:
+//
+// OmitEmpty Only include the field if it's not set to the zero value for the type or to
+// empty slices or maps.
+//
+// MinSize Marshal an integer of a type larger than 32 bits value as an int32, if that's
+// feasible while preserving the numeric value.
+//
+// Truncate When unmarshaling a BSON double, it is permitted to lose precision to fit within
+// a float32.
+//
+// Inline Inline the field, which must be a struct or a map, causing all of its fields
+// or keys to be processed as if they were part of the outer struct. For maps,
+// keys must not conflict with the bson keys of other struct fields.
+//
+// Skip This struct field should be skipped. This is usually denoted by parsing a "-"
+// for the name.
+//
+// TODO(skriptble): Add tags for undefined as nil and for null as nil.
+type StructTags struct {
+ Name string
+ OmitEmpty bool
+ MinSize bool
+ Truncate bool
+ Inline bool
+ Skip bool
+}
+
+// DefaultStructTagParser is the StructTagParser used by the StructCodec by default.
+// It will handle the bson struct tag. See the documentation for StructTags to see
+// what each of the returned fields means.
+//
+// If there is no name in the struct tag fields, the struct field name is lowercased.
+// The tag formats accepted are:
+//
+// "[<key>][,<flag1>[,<flag2>]]"
+//
+// `(...) bson:"[<key>][,<flag1>[,<flag2>]]" (...)`
+//
+// An example:
+//
+// type T struct {
+// A bool
+// B int "myb"
+// C string "myc,omitempty"
+// D string `bson:",omitempty" json:"jsonkey"`
+// E int64 ",minsize"
+// F int64 "myf,omitempty,minsize"
+// }
+//
+// A struct tag either consisting entirely of '-' or with a bson key with a
+// value consisting entirely of '-' will return a StructTags with Skip true and
+// the remaining fields will be their default values.
+var DefaultStructTagParser StructTagParserFunc = func(sf reflect.StructField) (StructTags, error) {
+ key := strings.ToLower(sf.Name)
+ tag, ok := sf.Tag.Lookup("bson")
+ if !ok && !strings.Contains(string(sf.Tag), ":") && len(sf.Tag) > 0 {
+ tag = string(sf.Tag)
+ }
+ var st StructTags
+ if tag == "-" {
+ st.Skip = true
+ return st, nil
+ }
+
+ for idx, str := range strings.Split(tag, ",") {
+ if idx == 0 && str != "" {
+ key = str
+ }
+ switch str {
+ case "omitempty":
+ st.OmitEmpty = true
+ case "minsize":
+ st.MinSize = true
+ case "truncate":
+ st.Truncate = true
+ case "inline":
+ st.Inline = true
+ }
+ }
+
+ st.Name = key
+
+ return st, nil
+}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/types.go b/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/types.go
new file mode 100644
index 0000000..c349a94
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/types.go
@@ -0,0 +1,80 @@
+// 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 bsoncodec
+
+import (
+ "encoding/json"
+ "net/url"
+ "reflect"
+ "time"
+
+ "github.com/mongodb/mongo-go-driver/bson/primitive"
+ "github.com/mongodb/mongo-go-driver/x/bsonx/bsoncore"
+)
+
+var ptBool = reflect.TypeOf((*bool)(nil))
+var ptInt8 = reflect.TypeOf((*int8)(nil))
+var ptInt16 = reflect.TypeOf((*int16)(nil))
+var ptInt32 = reflect.TypeOf((*int32)(nil))
+var ptInt64 = reflect.TypeOf((*int64)(nil))
+var ptInt = reflect.TypeOf((*int)(nil))
+var ptUint8 = reflect.TypeOf((*uint8)(nil))
+var ptUint16 = reflect.TypeOf((*uint16)(nil))
+var ptUint32 = reflect.TypeOf((*uint32)(nil))
+var ptUint64 = reflect.TypeOf((*uint64)(nil))
+var ptUint = reflect.TypeOf((*uint)(nil))
+var ptFloat32 = reflect.TypeOf((*float32)(nil))
+var ptFloat64 = reflect.TypeOf((*float64)(nil))
+var ptString = reflect.TypeOf((*string)(nil))
+
+var tBool = reflect.TypeOf(false)
+var tFloat32 = reflect.TypeOf(float32(0))
+var tFloat64 = reflect.TypeOf(float64(0))
+var tInt = reflect.TypeOf(int(0))
+var tInt8 = reflect.TypeOf(int8(0))
+var tInt16 = reflect.TypeOf(int16(0))
+var tInt32 = reflect.TypeOf(int32(0))
+var tInt64 = reflect.TypeOf(int64(0))
+var tString = reflect.TypeOf("")
+var tTime = reflect.TypeOf(time.Time{})
+var tUint = reflect.TypeOf(uint(0))
+var tUint8 = reflect.TypeOf(uint8(0))
+var tUint16 = reflect.TypeOf(uint16(0))
+var tUint32 = reflect.TypeOf(uint32(0))
+var tUint64 = reflect.TypeOf(uint64(0))
+
+var tEmpty = reflect.TypeOf((*interface{})(nil)).Elem()
+var tByteSlice = reflect.TypeOf([]byte(nil))
+var tByte = reflect.TypeOf(byte(0x00))
+var tURL = reflect.TypeOf(url.URL{})
+var tJSONNumber = reflect.TypeOf(json.Number(""))
+
+var tValueMarshaler = reflect.TypeOf((*ValueMarshaler)(nil)).Elem()
+var tValueUnmarshaler = reflect.TypeOf((*ValueUnmarshaler)(nil)).Elem()
+var tMarshaler = reflect.TypeOf((*Marshaler)(nil)).Elem()
+var tUnmarshaler = reflect.TypeOf((*Unmarshaler)(nil)).Elem()
+var tProxy = reflect.TypeOf((*Proxy)(nil)).Elem()
+
+var tBinary = reflect.TypeOf(primitive.Binary{})
+var tUndefined = reflect.TypeOf(primitive.Undefined{})
+var tOID = reflect.TypeOf(primitive.ObjectID{})
+var tDateTime = reflect.TypeOf(primitive.DateTime(0))
+var tNull = reflect.TypeOf(primitive.Null{})
+var tRegex = reflect.TypeOf(primitive.Regex{})
+var tCodeWithScope = reflect.TypeOf(primitive.CodeWithScope{})
+var tDBPointer = reflect.TypeOf(primitive.DBPointer{})
+var tJavaScript = reflect.TypeOf(primitive.JavaScript(""))
+var tSymbol = reflect.TypeOf(primitive.Symbol(""))
+var tTimestamp = reflect.TypeOf(primitive.Timestamp{})
+var tDecimal = reflect.TypeOf(primitive.Decimal128{})
+var tMinKey = reflect.TypeOf(primitive.MinKey{})
+var tMaxKey = reflect.TypeOf(primitive.MaxKey{})
+var tD = reflect.TypeOf(primitive.D{})
+var tA = reflect.TypeOf(primitive.A{})
+var tE = reflect.TypeOf(primitive.E{})
+
+var tCoreDocument = reflect.TypeOf(bsoncore.Document{})
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/copier.go b/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/copier.go
new file mode 100644
index 0000000..e01a650
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/copier.go
@@ -0,0 +1,389 @@
+// 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"
+
+ "github.com/mongodb/mongo-go-driver/bson/bsontype"
+ "github.com/mongodb/mongo-go-driver/bson/primitive"
+ "github.com/mongodb/mongo-go-driver/x/bsonx/bsoncore"
+)
+
+// Copier is a type that allows copying between ValueReaders, ValueWriters, and
+// []byte values.
+type Copier struct{}
+
+// NewCopier creates a new copier with the given registry. If a nil registry is provided
+// a default registry is used.
+func NewCopier() Copier {
+ return Copier{}
+}
+
+// CopyDocument handles copying a document from src to dst.
+func CopyDocument(dst ValueWriter, src ValueReader) error {
+ return Copier{}.CopyDocument(dst, src)
+}
+
+// CopyDocument handles copying one document from the src to the dst.
+func (c Copier) CopyDocument(dst ValueWriter, src ValueReader) error {
+ dr, err := src.ReadDocument()
+ if err != nil {
+ return err
+ }
+
+ dw, err := dst.WriteDocument()
+ if err != nil {
+ return err
+ }
+
+ return c.copyDocumentCore(dw, dr)
+}
+
+// CopyDocumentFromBytes copies the values from a BSON document represented as a
+// []byte to a ValueWriter.
+func (c Copier) CopyDocumentFromBytes(dst ValueWriter, src []byte) error {
+ dw, err := dst.WriteDocument()
+ if err != nil {
+ return err
+ }
+
+ err = c.CopyBytesToDocumentWriter(dw, src)
+ if err != nil {
+ return err
+ }
+
+ return dw.WriteDocumentEnd()
+}
+
+// CopyBytesToDocumentWriter copies the values from a BSON document represented as a []byte to a
+// DocumentWriter.
+func (c Copier) CopyBytesToDocumentWriter(dst DocumentWriter, src []byte) error {
+ // TODO(skriptble): Create errors types here. Anything thats a tag should be a property.
+ length, rem, ok := bsoncore.ReadLength(src)
+ if !ok {
+ return fmt.Errorf("couldn't read length from src, not enough bytes. length=%d", len(src))
+ }
+ if len(src) < int(length) {
+ return fmt.Errorf("length read exceeds number of bytes available. length=%d bytes=%d", len(src), length)
+ }
+ rem = rem[:length-4]
+
+ var t bsontype.Type
+ var key string
+ var val bsoncore.Value
+ for {
+ t, rem, ok = bsoncore.ReadType(rem)
+ if !ok {
+ return io.EOF
+ }
+ if t == bsontype.Type(0) {
+ if len(rem) != 0 {
+ return fmt.Errorf("document end byte found before end of document. remaining bytes=%v", rem)
+ }
+ break
+ }
+
+ key, rem, ok = bsoncore.ReadKey(rem)
+ if !ok {
+ return fmt.Errorf("invalid key found. remaining bytes=%v", rem)
+ }
+ dvw, err := dst.WriteDocumentElement(key)
+ if err != nil {
+ return err
+ }
+ val, rem, ok = bsoncore.ReadValue(rem, t)
+ if !ok {
+ return fmt.Errorf("not enough bytes available to read type. bytes=%d type=%s", len(rem), t)
+ }
+ err = c.CopyValueFromBytes(dvw, t, val.Data)
+ if err != nil {
+ return err
+ }
+ }
+ return nil
+}
+
+// CopyDocumentToBytes copies an entire document from the ValueReader and
+// returns it as bytes.
+func (c Copier) CopyDocumentToBytes(src ValueReader) ([]byte, error) {
+ return c.AppendDocumentBytes(nil, src)
+}
+
+// AppendDocumentBytes functions the same as CopyDocumentToBytes, but will
+// append the result to dst.
+func (c Copier) AppendDocumentBytes(dst []byte, src ValueReader) ([]byte, error) {
+ if br, ok := src.(BytesReader); ok {
+ _, dst, err := br.ReadValueBytes(dst)
+ return dst, err
+ }
+
+ vw := vwPool.Get().(*valueWriter)
+ defer vwPool.Put(vw)
+
+ vw.reset(dst)
+
+ err := c.CopyDocument(vw, src)
+ dst = vw.buf
+ return dst, err
+}
+
+// CopyValueFromBytes will write the value represtend by t and src to dst.
+func (c Copier) CopyValueFromBytes(dst ValueWriter, t bsontype.Type, src []byte) error {
+ if wvb, ok := dst.(BytesWriter); ok {
+ return wvb.WriteValueBytes(t, src)
+ }
+
+ vr := vrPool.Get().(*valueReader)
+ defer vrPool.Put(vr)
+
+ vr.reset(src)
+ vr.pushElement(t)
+
+ return c.CopyValue(dst, vr)
+}
+
+// CopyValueToBytes copies a value from src and returns it as a bsontype.Type and a
+// []byte.
+func (c Copier) CopyValueToBytes(src ValueReader) (bsontype.Type, []byte, error) {
+ return c.AppendValueBytes(nil, src)
+}
+
+// AppendValueBytes functions the same as CopyValueToBytes, but will append the
+// result to dst.
+func (c Copier) AppendValueBytes(dst []byte, src ValueReader) (bsontype.Type, []byte, error) {
+ if br, ok := src.(BytesReader); ok {
+ return br.ReadValueBytes(dst)
+ }
+
+ vw := vwPool.Get().(*valueWriter)
+ defer vwPool.Put(vw)
+
+ start := len(dst)
+
+ vw.reset(dst)
+ vw.push(mElement)
+
+ err := c.CopyValue(vw, src)
+ if err != nil {
+ return 0, dst, err
+ }
+
+ return bsontype.Type(vw.buf[start]), vw.buf[start+2:], nil
+}
+
+// CopyValue will copy a single value from src to dst.
+func (c Copier) CopyValue(dst ValueWriter, src ValueReader) error {
+ var err error
+ switch src.Type() {
+ case bsontype.Double:
+ var f64 float64
+ f64, err = src.ReadDouble()
+ if err != nil {
+ break
+ }
+ err = dst.WriteDouble(f64)
+ case bsontype.String:
+ var str string
+ str, err = src.ReadString()
+ if err != nil {
+ return err
+ }
+ err = dst.WriteString(str)
+ case bsontype.EmbeddedDocument:
+ err = c.CopyDocument(dst, src)
+ case bsontype.Array:
+ err = c.copyArray(dst, src)
+ case bsontype.Binary:
+ var data []byte
+ var subtype byte
+ data, subtype, err = src.ReadBinary()
+ if err != nil {
+ break
+ }
+ err = dst.WriteBinaryWithSubtype(data, subtype)
+ case bsontype.Undefined:
+ err = src.ReadUndefined()
+ if err != nil {
+ break
+ }
+ err = dst.WriteUndefined()
+ case bsontype.ObjectID:
+ var oid primitive.ObjectID
+ oid, err = src.ReadObjectID()
+ if err != nil {
+ break
+ }
+ err = dst.WriteObjectID(oid)
+ case bsontype.Boolean:
+ var b bool
+ b, err = src.ReadBoolean()
+ if err != nil {
+ break
+ }
+ err = dst.WriteBoolean(b)
+ case bsontype.DateTime:
+ var dt int64
+ dt, err = src.ReadDateTime()
+ if err != nil {
+ break
+ }
+ err = dst.WriteDateTime(dt)
+ case bsontype.Null:
+ err = src.ReadNull()
+ if err != nil {
+ break
+ }
+ err = dst.WriteNull()
+ case bsontype.Regex:
+ var pattern, options string
+ pattern, options, err = src.ReadRegex()
+ if err != nil {
+ break
+ }
+ err = dst.WriteRegex(pattern, options)
+ case bsontype.DBPointer:
+ var ns string
+ var pointer primitive.ObjectID
+ ns, pointer, err = src.ReadDBPointer()
+ if err != nil {
+ break
+ }
+ err = dst.WriteDBPointer(ns, pointer)
+ case bsontype.JavaScript:
+ var js string
+ js, err = src.ReadJavascript()
+ if err != nil {
+ break
+ }
+ err = dst.WriteJavascript(js)
+ case bsontype.Symbol:
+ var symbol string
+ symbol, err = src.ReadSymbol()
+ if err != nil {
+ break
+ }
+ err = dst.WriteSymbol(symbol)
+ case bsontype.CodeWithScope:
+ var code string
+ var srcScope DocumentReader
+ code, srcScope, err = src.ReadCodeWithScope()
+ if err != nil {
+ break
+ }
+
+ var dstScope DocumentWriter
+ dstScope, err = dst.WriteCodeWithScope(code)
+ if err != nil {
+ break
+ }
+ err = c.copyDocumentCore(dstScope, srcScope)
+ case bsontype.Int32:
+ var i32 int32
+ i32, err = src.ReadInt32()
+ if err != nil {
+ break
+ }
+ err = dst.WriteInt32(i32)
+ case bsontype.Timestamp:
+ var t, i uint32
+ t, i, err = src.ReadTimestamp()
+ if err != nil {
+ break
+ }
+ err = dst.WriteTimestamp(t, i)
+ case bsontype.Int64:
+ var i64 int64
+ i64, err = src.ReadInt64()
+ if err != nil {
+ break
+ }
+ err = dst.WriteInt64(i64)
+ case bsontype.Decimal128:
+ var d128 primitive.Decimal128
+ d128, err = src.ReadDecimal128()
+ if err != nil {
+ break
+ }
+ err = dst.WriteDecimal128(d128)
+ case bsontype.MinKey:
+ err = src.ReadMinKey()
+ if err != nil {
+ break
+ }
+ err = dst.WriteMinKey()
+ case bsontype.MaxKey:
+ err = src.ReadMaxKey()
+ if err != nil {
+ break
+ }
+ err = dst.WriteMaxKey()
+ default:
+ err = fmt.Errorf("Cannot copy unknown BSON type %s", src.Type())
+ }
+
+ return err
+}
+
+func (c Copier) copyArray(dst ValueWriter, src ValueReader) error {
+ ar, err := src.ReadArray()
+ if err != nil {
+ return err
+ }
+
+ aw, err := dst.WriteArray()
+ if err != nil {
+ return err
+ }
+
+ for {
+ vr, err := ar.ReadValue()
+ if err == ErrEOA {
+ break
+ }
+ if err != nil {
+ return err
+ }
+
+ vw, err := aw.WriteArrayElement()
+ if err != nil {
+ return err
+ }
+
+ err = c.CopyValue(vw, vr)
+ if err != nil {
+ return err
+ }
+ }
+
+ return aw.WriteArrayEnd()
+}
+
+func (c Copier) copyDocumentCore(dw DocumentWriter, dr DocumentReader) error {
+ for {
+ key, vr, err := dr.ReadElement()
+ if err == ErrEOD {
+ break
+ }
+ if err != nil {
+ return err
+ }
+
+ vw, err := dw.WriteDocumentElement(key)
+ if err != nil {
+ return err
+ }
+
+ err = c.CopyValue(vw, vr)
+ if err != nil {
+ return err
+ }
+ }
+
+ return dw.WriteDocumentEnd()
+}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/doc.go b/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/doc.go
new file mode 100644
index 0000000..21f24b0
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/doc.go
@@ -0,0 +1,9 @@
+// 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 contains abstractions for reading and writing
+// BSON and BSON like types from sources.
+package bsonrw
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/extjson_parser.go b/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/extjson_parser.go
new file mode 100644
index 0000000..689982c
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/extjson_parser.go
@@ -0,0 +1,687 @@
+// 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 (
+ "errors"
+ "fmt"
+ "io"
+
+ "github.com/mongodb/mongo-go-driver/bson/bsontype"
+)
+
+const maxNestingDepth = 200
+
+// ErrInvalidJSON indicates the JSON input is invalid
+var ErrInvalidJSON = errors.New("invalid JSON input")
+
+type jsonParseState byte
+
+const (
+ jpsStartState jsonParseState = iota
+ jpsSawBeginObject
+ jpsSawEndObject
+ jpsSawBeginArray
+ jpsSawEndArray
+ jpsSawColon
+ jpsSawComma
+ jpsSawKey
+ jpsSawValue
+ jpsDoneState
+ jpsInvalidState
+)
+
+type jsonParseMode byte
+
+const (
+ jpmInvalidMode jsonParseMode = iota
+ jpmObjectMode
+ jpmArrayMode
+)
+
+type extJSONValue struct {
+ t bsontype.Type
+ v interface{}
+}
+
+type extJSONObject struct {
+ keys []string
+ values []*extJSONValue
+}
+
+type extJSONParser struct {
+ js *jsonScanner
+ s jsonParseState
+ m []jsonParseMode
+ k string
+ v *extJSONValue
+
+ err error
+ canonical bool
+ depth int
+ maxDepth int
+
+ emptyObject bool
+}
+
+// newExtJSONParser returns a new extended JSON parser, ready to to begin
+// parsing from the first character of the argued json input. It will not
+// perform any read-ahead and will therefore not report any errors about
+// malformed JSON at this point.
+func newExtJSONParser(r io.Reader, canonical bool) *extJSONParser {
+ return &extJSONParser{
+ js: &jsonScanner{r: r},
+ s: jpsStartState,
+ m: []jsonParseMode{},
+ canonical: canonical,
+ maxDepth: maxNestingDepth,
+ }
+}
+
+// peekType examines the next value and returns its BSON Type
+func (ejp *extJSONParser) peekType() (bsontype.Type, error) {
+ var t bsontype.Type
+ var err error
+
+ ejp.advanceState()
+ switch ejp.s {
+ case jpsSawValue:
+ t = ejp.v.t
+ case jpsSawBeginArray:
+ t = bsontype.Array
+ case jpsInvalidState:
+ err = ejp.err
+ case jpsSawComma:
+ // in array mode, seeing a comma means we need to progress again to actually observe a type
+ if ejp.peekMode() == jpmArrayMode {
+ return ejp.peekType()
+ }
+ case jpsSawEndArray:
+ // this would only be a valid state if we were in array mode, so return end-of-array error
+ err = ErrEOA
+ case jpsSawBeginObject:
+ // peek key to determine type
+ ejp.advanceState()
+ switch ejp.s {
+ case jpsSawEndObject: // empty embedded document
+ t = bsontype.EmbeddedDocument
+ ejp.emptyObject = true
+ case jpsInvalidState:
+ err = ejp.err
+ case jpsSawKey:
+ t = wrapperKeyBSONType(ejp.k)
+
+ if t == bsontype.JavaScript {
+ // just saw $code, need to check for $scope at same level
+ _, err := ejp.readValue(bsontype.JavaScript)
+
+ if err != nil {
+ break
+ }
+
+ switch ejp.s {
+ case jpsSawEndObject: // type is TypeJavaScript
+ case jpsSawComma:
+ ejp.advanceState()
+ if ejp.s == jpsSawKey && ejp.k == "$scope" {
+ t = bsontype.CodeWithScope
+ } else {
+ err = fmt.Errorf("invalid extended JSON: unexpected key %s in CodeWithScope object", ejp.k)
+ }
+ case jpsInvalidState:
+ err = ejp.err
+ default:
+ err = ErrInvalidJSON
+ }
+ }
+ }
+ }
+
+ return t, err
+}
+
+// readKey parses the next key and its type and returns them
+func (ejp *extJSONParser) readKey() (string, bsontype.Type, error) {
+ if ejp.emptyObject {
+ ejp.emptyObject = false
+ return "", 0, ErrEOD
+ }
+
+ // advance to key (or return with error)
+ switch ejp.s {
+ case jpsStartState:
+ ejp.advanceState()
+ if ejp.s == jpsSawBeginObject {
+ ejp.advanceState()
+ }
+ case jpsSawBeginObject:
+ ejp.advanceState()
+ case jpsSawValue, jpsSawEndObject, jpsSawEndArray:
+ ejp.advanceState()
+ switch ejp.s {
+ case jpsSawBeginObject, jpsSawComma:
+ ejp.advanceState()
+ case jpsSawEndObject:
+ return "", 0, ErrEOD
+ case jpsDoneState:
+ return "", 0, io.EOF
+ case jpsInvalidState:
+ return "", 0, ejp.err
+ default:
+ return "", 0, ErrInvalidJSON
+ }
+ case jpsSawKey: // do nothing (key was peeked before)
+ default:
+ return "", 0, invalidRequestError("key")
+ }
+
+ // read key
+ var key string
+
+ switch ejp.s {
+ case jpsSawKey:
+ key = ejp.k
+ case jpsSawEndObject:
+ return "", 0, ErrEOD
+ case jpsInvalidState:
+ return "", 0, ejp.err
+ default:
+ return "", 0, invalidRequestError("key")
+ }
+
+ // check for colon
+ ejp.advanceState()
+ if err := ensureColon(ejp.s, key); err != nil {
+ return "", 0, err
+ }
+
+ // peek at the value to determine type
+ t, err := ejp.peekType()
+ if err != nil {
+ return "", 0, err
+ }
+
+ return key, t, nil
+}
+
+// readValue returns the value corresponding to the Type returned by peekType
+func (ejp *extJSONParser) readValue(t bsontype.Type) (*extJSONValue, error) {
+ if ejp.s == jpsInvalidState {
+ return nil, ejp.err
+ }
+
+ var v *extJSONValue
+
+ switch t {
+ case bsontype.Null, bsontype.Boolean, bsontype.String:
+ if ejp.s != jpsSawValue {
+ return nil, invalidRequestError(t.String())
+ }
+ v = ejp.v
+ case bsontype.Int32, bsontype.Int64, bsontype.Double:
+ // relaxed version allows these to be literal number values
+ if ejp.s == jpsSawValue {
+ v = ejp.v
+ break
+ }
+ fallthrough
+ case bsontype.Decimal128, bsontype.Symbol, bsontype.ObjectID, bsontype.MinKey, bsontype.MaxKey, bsontype.Undefined:
+ switch ejp.s {
+ case jpsSawKey:
+ // read colon
+ ejp.advanceState()
+ if err := ensureColon(ejp.s, ejp.k); err != nil {
+ return nil, err
+ }
+
+ // read value
+ ejp.advanceState()
+ if ejp.s != jpsSawValue || !ejp.ensureExtValueType(t) {
+ return nil, invalidJSONErrorForType("value", t)
+ }
+
+ v = ejp.v
+
+ // read end object
+ ejp.advanceState()
+ if ejp.s != jpsSawEndObject {
+ return nil, invalidJSONErrorForType("} after value", t)
+ }
+ default:
+ return nil, invalidRequestError(t.String())
+ }
+ case bsontype.Binary, bsontype.Regex, bsontype.Timestamp, bsontype.DBPointer:
+ if ejp.s != jpsSawKey {
+ return nil, invalidRequestError(t.String())
+ }
+ // read colon
+ ejp.advanceState()
+ if err := ensureColon(ejp.s, ejp.k); err != nil {
+ return nil, err
+ }
+
+ // read KV pairs
+ keys, vals, err := ejp.readObject(2, false)
+ if err != nil {
+ return nil, err
+ }
+
+ ejp.advanceState()
+ if ejp.s != jpsSawEndObject {
+ return nil, invalidJSONErrorForType("2 key-value pairs and then }", t)
+ }
+
+ v = &extJSONValue{t: bsontype.EmbeddedDocument, v: &extJSONObject{keys: keys, values: vals}}
+ case bsontype.DateTime:
+ switch ejp.s {
+ case jpsSawValue:
+ v = ejp.v
+ case jpsSawKey:
+ // read colon
+ ejp.advanceState()
+ if err := ensureColon(ejp.s, ejp.k); err != nil {
+ return nil, err
+ }
+
+ ejp.advanceState()
+ switch ejp.s {
+ case jpsSawBeginObject:
+ keys, vals, err := ejp.readObject(1, true)
+ if err != nil {
+ return nil, err
+ }
+ v = &extJSONValue{t: bsontype.EmbeddedDocument, v: &extJSONObject{keys: keys, values: vals}}
+ case jpsSawValue:
+ if ejp.canonical {
+ return nil, invalidJSONError("{")
+ }
+ v = ejp.v
+ default:
+ if ejp.canonical {
+ return nil, invalidJSONErrorForType("object", t)
+ }
+ return nil, invalidJSONErrorForType("ISO-8601 Internet Date/Time Format as decribed in RFC-3339", t)
+ }
+
+ ejp.advanceState()
+ if ejp.s != jpsSawEndObject {
+ return nil, invalidJSONErrorForType("value and then }", t)
+ }
+ default:
+ return nil, invalidRequestError(t.String())
+ }
+ case bsontype.JavaScript:
+ switch ejp.s {
+ case jpsSawKey:
+ // read colon
+ ejp.advanceState()
+ if err := ensureColon(ejp.s, ejp.k); err != nil {
+ return nil, err
+ }
+
+ // read value
+ ejp.advanceState()
+ if ejp.s != jpsSawValue {
+ return nil, invalidJSONErrorForType("value", t)
+ }
+ v = ejp.v
+
+ // read end object or comma and just return
+ ejp.advanceState()
+ case jpsSawEndObject:
+ v = ejp.v
+ default:
+ return nil, invalidRequestError(t.String())
+ }
+ case bsontype.CodeWithScope:
+ if ejp.s == jpsSawKey && ejp.k == "$scope" {
+ v = ejp.v // this is the $code string from earlier
+
+ // read colon
+ ejp.advanceState()
+ if err := ensureColon(ejp.s, ejp.k); err != nil {
+ return nil, err
+ }
+
+ // read {
+ ejp.advanceState()
+ if ejp.s != jpsSawBeginObject {
+ return nil, invalidJSONError("$scope to be embedded document")
+ }
+ } else {
+ return nil, invalidRequestError(t.String())
+ }
+ case bsontype.EmbeddedDocument, bsontype.Array:
+ return nil, invalidRequestError(t.String())
+ }
+
+ return v, nil
+}
+
+// readObject is a utility method for reading full objects of known (or expected) size
+// it is useful for extended JSON types such as binary, datetime, regex, and timestamp
+func (ejp *extJSONParser) readObject(numKeys int, started bool) ([]string, []*extJSONValue, error) {
+ keys := make([]string, numKeys)
+ vals := make([]*extJSONValue, numKeys)
+
+ if !started {
+ ejp.advanceState()
+ if ejp.s != jpsSawBeginObject {
+ return nil, nil, invalidJSONError("{")
+ }
+ }
+
+ for i := 0; i < numKeys; i++ {
+ key, t, err := ejp.readKey()
+ if err != nil {
+ return nil, nil, err
+ }
+
+ switch ejp.s {
+ case jpsSawKey:
+ v, err := ejp.readValue(t)
+ if err != nil {
+ return nil, nil, err
+ }
+
+ keys[i] = key
+ vals[i] = v
+ case jpsSawValue:
+ keys[i] = key
+ vals[i] = ejp.v
+ default:
+ return nil, nil, invalidJSONError("value")
+ }
+ }
+
+ ejp.advanceState()
+ if ejp.s != jpsSawEndObject {
+ return nil, nil, invalidJSONError("}")
+ }
+
+ return keys, vals, nil
+}
+
+// advanceState reads the next JSON token from the scanner and transitions
+// from the current state based on that token's type
+func (ejp *extJSONParser) advanceState() {
+ if ejp.s == jpsDoneState || ejp.s == jpsInvalidState {
+ return
+ }
+
+ jt, err := ejp.js.nextToken()
+
+ if err != nil {
+ ejp.err = err
+ ejp.s = jpsInvalidState
+ return
+ }
+
+ valid := ejp.validateToken(jt.t)
+ if !valid {
+ ejp.err = unexpectedTokenError(jt)
+ ejp.s = jpsInvalidState
+ return
+ }
+
+ switch jt.t {
+ case jttBeginObject:
+ ejp.s = jpsSawBeginObject
+ ejp.pushMode(jpmObjectMode)
+ ejp.depth++
+
+ if ejp.depth > ejp.maxDepth {
+ ejp.err = nestingDepthError(jt.p, ejp.depth)
+ ejp.s = jpsInvalidState
+ }
+ case jttEndObject:
+ ejp.s = jpsSawEndObject
+ ejp.depth--
+
+ if ejp.popMode() != jpmObjectMode {
+ ejp.err = unexpectedTokenError(jt)
+ ejp.s = jpsInvalidState
+ }
+ case jttBeginArray:
+ ejp.s = jpsSawBeginArray
+ ejp.pushMode(jpmArrayMode)
+ case jttEndArray:
+ ejp.s = jpsSawEndArray
+
+ if ejp.popMode() != jpmArrayMode {
+ ejp.err = unexpectedTokenError(jt)
+ ejp.s = jpsInvalidState
+ }
+ case jttColon:
+ ejp.s = jpsSawColon
+ case jttComma:
+ ejp.s = jpsSawComma
+ case jttEOF:
+ ejp.s = jpsDoneState
+ if len(ejp.m) != 0 {
+ ejp.err = unexpectedTokenError(jt)
+ ejp.s = jpsInvalidState
+ }
+ case jttString:
+ switch ejp.s {
+ case jpsSawComma:
+ if ejp.peekMode() == jpmArrayMode {
+ ejp.s = jpsSawValue
+ ejp.v = extendJSONToken(jt)
+ return
+ }
+ fallthrough
+ case jpsSawBeginObject:
+ ejp.s = jpsSawKey
+ ejp.k = jt.v.(string)
+ return
+ }
+ fallthrough
+ default:
+ ejp.s = jpsSawValue
+ ejp.v = extendJSONToken(jt)
+ }
+}
+
+var jpsValidTransitionTokens = map[jsonParseState]map[jsonTokenType]bool{
+ jpsStartState: {
+ jttBeginObject: true,
+ jttBeginArray: true,
+ jttInt32: true,
+ jttInt64: true,
+ jttDouble: true,
+ jttString: true,
+ jttBool: true,
+ jttNull: true,
+ jttEOF: true,
+ },
+ jpsSawBeginObject: {
+ jttEndObject: true,
+ jttString: true,
+ },
+ jpsSawEndObject: {
+ jttEndObject: true,
+ jttEndArray: true,
+ jttComma: true,
+ jttEOF: true,
+ },
+ jpsSawBeginArray: {
+ jttBeginObject: true,
+ jttBeginArray: true,
+ jttEndArray: true,
+ jttInt32: true,
+ jttInt64: true,
+ jttDouble: true,
+ jttString: true,
+ jttBool: true,
+ jttNull: true,
+ },
+ jpsSawEndArray: {
+ jttEndObject: true,
+ jttEndArray: true,
+ jttComma: true,
+ jttEOF: true,
+ },
+ jpsSawColon: {
+ jttBeginObject: true,
+ jttBeginArray: true,
+ jttInt32: true,
+ jttInt64: true,
+ jttDouble: true,
+ jttString: true,
+ jttBool: true,
+ jttNull: true,
+ },
+ jpsSawComma: {
+ jttBeginObject: true,
+ jttBeginArray: true,
+ jttInt32: true,
+ jttInt64: true,
+ jttDouble: true,
+ jttString: true,
+ jttBool: true,
+ jttNull: true,
+ },
+ jpsSawKey: {
+ jttColon: true,
+ },
+ jpsSawValue: {
+ jttEndObject: true,
+ jttEndArray: true,
+ jttComma: true,
+ jttEOF: true,
+ },
+ jpsDoneState: {},
+ jpsInvalidState: {},
+}
+
+func (ejp *extJSONParser) validateToken(jtt jsonTokenType) bool {
+ switch ejp.s {
+ case jpsSawEndObject:
+ // if we are at depth zero and the next token is a '{',
+ // we can consider it valid only if we are not in array mode.
+ if jtt == jttBeginObject && ejp.depth == 0 {
+ return ejp.peekMode() != jpmArrayMode
+ }
+ case jpsSawComma:
+ switch ejp.peekMode() {
+ // the only valid next token after a comma inside a document is a string (a key)
+ case jpmObjectMode:
+ return jtt == jttString
+ case jpmInvalidMode:
+ return false
+ }
+ }
+
+ _, ok := jpsValidTransitionTokens[ejp.s][jtt]
+ return ok
+}
+
+// ensureExtValueType returns true if the current value has the expected
+// value type for single-key extended JSON types. For example,
+// {"$numberInt": v} v must be TypeString
+func (ejp *extJSONParser) ensureExtValueType(t bsontype.Type) bool {
+ switch t {
+ case bsontype.MinKey, bsontype.MaxKey:
+ return ejp.v.t == bsontype.Int32
+ case bsontype.Undefined:
+ return ejp.v.t == bsontype.Boolean
+ case bsontype.Int32, bsontype.Int64, bsontype.Double, bsontype.Decimal128, bsontype.Symbol, bsontype.ObjectID:
+ return ejp.v.t == bsontype.String
+ default:
+ return false
+ }
+}
+
+func (ejp *extJSONParser) pushMode(m jsonParseMode) {
+ ejp.m = append(ejp.m, m)
+}
+
+func (ejp *extJSONParser) popMode() jsonParseMode {
+ l := len(ejp.m)
+ if l == 0 {
+ return jpmInvalidMode
+ }
+
+ m := ejp.m[l-1]
+ ejp.m = ejp.m[:l-1]
+
+ return m
+}
+
+func (ejp *extJSONParser) peekMode() jsonParseMode {
+ l := len(ejp.m)
+ if l == 0 {
+ return jpmInvalidMode
+ }
+
+ return ejp.m[l-1]
+}
+
+func extendJSONToken(jt *jsonToken) *extJSONValue {
+ var t bsontype.Type
+
+ switch jt.t {
+ case jttInt32:
+ t = bsontype.Int32
+ case jttInt64:
+ t = bsontype.Int64
+ case jttDouble:
+ t = bsontype.Double
+ case jttString:
+ t = bsontype.String
+ case jttBool:
+ t = bsontype.Boolean
+ case jttNull:
+ t = bsontype.Null
+ default:
+ return nil
+ }
+
+ return &extJSONValue{t: t, v: jt.v}
+}
+
+func ensureColon(s jsonParseState, key string) error {
+ if s != jpsSawColon {
+ return fmt.Errorf("invalid JSON input: missing colon after key \"%s\"", key)
+ }
+
+ return nil
+}
+
+func invalidRequestError(s string) error {
+ return fmt.Errorf("invalid request to read %s", s)
+}
+
+func invalidJSONError(expected string) error {
+ return fmt.Errorf("invalid JSON input; expected %s", expected)
+}
+
+func invalidJSONErrorForType(expected string, t bsontype.Type) error {
+ return fmt.Errorf("invalid JSON input; expected %s for %s", expected, t)
+}
+
+func unexpectedTokenError(jt *jsonToken) error {
+ switch jt.t {
+ case jttInt32, jttInt64, jttDouble:
+ return fmt.Errorf("invalid JSON input; unexpected number (%v) at position %d", jt.v, jt.p)
+ case jttString:
+ return fmt.Errorf("invalid JSON input; unexpected string (\"%v\") at position %d", jt.v, jt.p)
+ case jttBool:
+ return fmt.Errorf("invalid JSON input; unexpected boolean literal (%v) at position %d", jt.v, jt.p)
+ case jttNull:
+ return fmt.Errorf("invalid JSON input; unexpected null literal at position %d", jt.p)
+ case jttEOF:
+ return fmt.Errorf("invalid JSON input; unexpected end of input at position %d", jt.p)
+ default:
+ return fmt.Errorf("invalid JSON input; unexpected %c at position %d", jt.v.(byte), jt.p)
+ }
+}
+
+func nestingDepthError(p, depth int) error {
+ return fmt.Errorf("invalid JSON input; nesting too deep (%d levels) at position %d", depth, p)
+}
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
+}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/extjson_tables.go b/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/extjson_tables.go
new file mode 100644
index 0000000..ba39c96
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/extjson_tables.go
@@ -0,0 +1,223 @@
+// 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
+//
+// Based on github.com/golang/go by The Go Authors
+// See THIRD-PARTY-NOTICES for original license terms.
+
+package bsonrw
+
+import "unicode/utf8"
+
+// safeSet holds the value true if the ASCII character with the given array
+// position can be represented inside a JSON string without any further
+// escaping.
+//
+// All values are true except for the ASCII control characters (0-31), the
+// double quote ("), and the backslash character ("\").
+var safeSet = [utf8.RuneSelf]bool{
+ ' ': true,
+ '!': true,
+ '"': false,
+ '#': true,
+ '$': true,
+ '%': true,
+ '&': true,
+ '\'': true,
+ '(': true,
+ ')': true,
+ '*': true,
+ '+': true,
+ ',': true,
+ '-': true,
+ '.': true,
+ '/': true,
+ '0': true,
+ '1': true,
+ '2': true,
+ '3': true,
+ '4': true,
+ '5': true,
+ '6': true,
+ '7': true,
+ '8': true,
+ '9': true,
+ ':': true,
+ ';': true,
+ '<': true,
+ '=': true,
+ '>': true,
+ '?': true,
+ '@': true,
+ 'A': true,
+ 'B': true,
+ 'C': true,
+ 'D': true,
+ 'E': true,
+ 'F': true,
+ 'G': true,
+ 'H': true,
+ 'I': true,
+ 'J': true,
+ 'K': true,
+ 'L': true,
+ 'M': true,
+ 'N': true,
+ 'O': true,
+ 'P': true,
+ 'Q': true,
+ 'R': true,
+ 'S': true,
+ 'T': true,
+ 'U': true,
+ 'V': true,
+ 'W': true,
+ 'X': true,
+ 'Y': true,
+ 'Z': true,
+ '[': true,
+ '\\': false,
+ ']': true,
+ '^': true,
+ '_': true,
+ '`': true,
+ 'a': true,
+ 'b': true,
+ 'c': true,
+ 'd': true,
+ 'e': true,
+ 'f': true,
+ 'g': true,
+ 'h': true,
+ 'i': true,
+ 'j': true,
+ 'k': true,
+ 'l': true,
+ 'm': true,
+ 'n': true,
+ 'o': true,
+ 'p': true,
+ 'q': true,
+ 'r': true,
+ 's': true,
+ 't': true,
+ 'u': true,
+ 'v': true,
+ 'w': true,
+ 'x': true,
+ 'y': true,
+ 'z': true,
+ '{': true,
+ '|': true,
+ '}': true,
+ '~': true,
+ '\u007f': true,
+}
+
+// htmlSafeSet holds the value true if the ASCII character with the given
+// array position can be safely represented inside a JSON string, embedded
+// inside of HTML <script> tags, without any additional escaping.
+//
+// All values are true except for the ASCII control characters (0-31), the
+// double quote ("), the backslash character ("\"), HTML opening and closing
+// tags ("<" and ">"), and the ampersand ("&").
+var htmlSafeSet = [utf8.RuneSelf]bool{
+ ' ': true,
+ '!': true,
+ '"': false,
+ '#': true,
+ '$': true,
+ '%': true,
+ '&': false,
+ '\'': true,
+ '(': true,
+ ')': true,
+ '*': true,
+ '+': true,
+ ',': true,
+ '-': true,
+ '.': true,
+ '/': true,
+ '0': true,
+ '1': true,
+ '2': true,
+ '3': true,
+ '4': true,
+ '5': true,
+ '6': true,
+ '7': true,
+ '8': true,
+ '9': true,
+ ':': true,
+ ';': true,
+ '<': false,
+ '=': true,
+ '>': false,
+ '?': true,
+ '@': true,
+ 'A': true,
+ 'B': true,
+ 'C': true,
+ 'D': true,
+ 'E': true,
+ 'F': true,
+ 'G': true,
+ 'H': true,
+ 'I': true,
+ 'J': true,
+ 'K': true,
+ 'L': true,
+ 'M': true,
+ 'N': true,
+ 'O': true,
+ 'P': true,
+ 'Q': true,
+ 'R': true,
+ 'S': true,
+ 'T': true,
+ 'U': true,
+ 'V': true,
+ 'W': true,
+ 'X': true,
+ 'Y': true,
+ 'Z': true,
+ '[': true,
+ '\\': false,
+ ']': true,
+ '^': true,
+ '_': true,
+ '`': true,
+ 'a': true,
+ 'b': true,
+ 'c': true,
+ 'd': true,
+ 'e': true,
+ 'f': true,
+ 'g': true,
+ 'h': true,
+ 'i': true,
+ 'j': true,
+ 'k': true,
+ 'l': true,
+ 'm': true,
+ 'n': true,
+ 'o': true,
+ 'p': true,
+ 'q': true,
+ 'r': true,
+ 's': true,
+ 't': true,
+ 'u': true,
+ 'v': true,
+ 'w': true,
+ 'x': true,
+ 'y': true,
+ 'z': true,
+ '{': true,
+ '|': true,
+ '}': true,
+ '~': true,
+ '\u007f': true,
+}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/extjson_wrappers.go b/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/extjson_wrappers.go
new file mode 100644
index 0000000..196662c
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/extjson_wrappers.go
@@ -0,0 +1,481 @@
+// 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 (
+ "encoding/base64"
+ "errors"
+ "fmt"
+ "math"
+ "strconv"
+ "time"
+
+ "github.com/mongodb/mongo-go-driver/bson/bsontype"
+ "github.com/mongodb/mongo-go-driver/bson/primitive"
+)
+
+func wrapperKeyBSONType(key string) bsontype.Type {
+ switch string(key) {
+ case "$numberInt":
+ return bsontype.Int32
+ case "$numberLong":
+ return bsontype.Int64
+ case "$oid":
+ return bsontype.ObjectID
+ case "$symbol":
+ return bsontype.Symbol
+ case "$numberDouble":
+ return bsontype.Double
+ case "$numberDecimal":
+ return bsontype.Decimal128
+ case "$binary":
+ return bsontype.Binary
+ case "$code":
+ return bsontype.JavaScript
+ case "$scope":
+ return bsontype.CodeWithScope
+ case "$timestamp":
+ return bsontype.Timestamp
+ case "$regularExpression":
+ return bsontype.Regex
+ case "$dbPointer":
+ return bsontype.DBPointer
+ case "$date":
+ return bsontype.DateTime
+ case "$ref":
+ fallthrough
+ case "$id":
+ fallthrough
+ case "$db":
+ return bsontype.EmbeddedDocument // dbrefs aren't bson types
+ case "$minKey":
+ return bsontype.MinKey
+ case "$maxKey":
+ return bsontype.MaxKey
+ case "$undefined":
+ return bsontype.Undefined
+ }
+
+ return bsontype.EmbeddedDocument
+}
+
+func (ejv *extJSONValue) parseBinary() (b []byte, subType byte, err error) {
+ if ejv.t != bsontype.EmbeddedDocument {
+ return nil, 0, fmt.Errorf("$binary value should be object, but instead is %s", ejv.t)
+ }
+
+ binObj := ejv.v.(*extJSONObject)
+ bFound := false
+ stFound := false
+
+ for i, key := range binObj.keys {
+ val := binObj.values[i]
+
+ switch key {
+ case "base64":
+ if bFound {
+ return nil, 0, errors.New("duplicate base64 key in $binary")
+ }
+
+ if val.t != bsontype.String {
+ return nil, 0, fmt.Errorf("$binary base64 value should be string, but instead is %s", val.t)
+ }
+
+ base64Bytes, err := base64.StdEncoding.DecodeString(val.v.(string))
+ if err != nil {
+ return nil, 0, fmt.Errorf("invalid $binary base64 string: %s", val.v.(string))
+ }
+
+ b = base64Bytes
+ bFound = true
+ case "subType":
+ if stFound {
+ return nil, 0, errors.New("duplicate subType key in $binary")
+ }
+
+ if val.t != bsontype.String {
+ return nil, 0, fmt.Errorf("$binary subType value should be string, but instead is %s", val.t)
+ }
+
+ i, err := strconv.ParseInt(val.v.(string), 16, 64)
+ if err != nil {
+ return nil, 0, fmt.Errorf("invalid $binary subType string: %s", val.v.(string))
+ }
+
+ subType = byte(i)
+ stFound = true
+ default:
+ return nil, 0, fmt.Errorf("invalid key in $binary object: %s", key)
+ }
+ }
+
+ if !bFound {
+ return nil, 0, errors.New("missing base64 field in $binary object")
+ }
+
+ if !stFound {
+ return nil, 0, errors.New("missing subType field in $binary object")
+
+ }
+
+ return b, subType, nil
+}
+
+func (ejv *extJSONValue) parseDBPointer() (ns string, oid primitive.ObjectID, err error) {
+ if ejv.t != bsontype.EmbeddedDocument {
+ return "", primitive.NilObjectID, fmt.Errorf("$dbPointer value should be object, but instead is %s", ejv.t)
+ }
+
+ dbpObj := ejv.v.(*extJSONObject)
+ oidFound := false
+ nsFound := false
+
+ for i, key := range dbpObj.keys {
+ val := dbpObj.values[i]
+
+ switch key {
+ case "$ref":
+ if nsFound {
+ return "", primitive.NilObjectID, errors.New("duplicate $ref key in $dbPointer")
+ }
+
+ if val.t != bsontype.String {
+ return "", primitive.NilObjectID, fmt.Errorf("$dbPointer $ref value should be string, but instead is %s", val.t)
+ }
+
+ ns = val.v.(string)
+ nsFound = true
+ case "$id":
+ if oidFound {
+ return "", primitive.NilObjectID, errors.New("duplicate $id key in $dbPointer")
+ }
+
+ if val.t != bsontype.String {
+ return "", primitive.NilObjectID, fmt.Errorf("$dbPointer $id value should be string, but instead is %s", val.t)
+ }
+
+ oid, err = primitive.ObjectIDFromHex(val.v.(string))
+ if err != nil {
+ return "", primitive.NilObjectID, err
+ }
+
+ oidFound = true
+ default:
+ return "", primitive.NilObjectID, fmt.Errorf("invalid key in $dbPointer object: %s", key)
+ }
+ }
+
+ if !nsFound {
+ return "", oid, errors.New("missing $ref field in $dbPointer object")
+ }
+
+ if !oidFound {
+ return "", oid, errors.New("missing $id field in $dbPointer object")
+ }
+
+ return ns, oid, nil
+}
+
+const rfc3339Milli = "2006-01-02T15:04:05.999Z07:00"
+
+func (ejv *extJSONValue) parseDateTime() (int64, error) {
+ switch ejv.t {
+ case bsontype.Int32:
+ return int64(ejv.v.(int32)), nil
+ case bsontype.Int64:
+ return ejv.v.(int64), nil
+ case bsontype.String:
+ return parseDatetimeString(ejv.v.(string))
+ case bsontype.EmbeddedDocument:
+ return parseDatetimeObject(ejv.v.(*extJSONObject))
+ default:
+ return 0, fmt.Errorf("$date value should be string or object, but instead is %s", ejv.t)
+ }
+}
+
+func parseDatetimeString(data string) (int64, error) {
+ t, err := time.Parse(rfc3339Milli, data)
+ if err != nil {
+ return 0, fmt.Errorf("invalid $date value string: %s", data)
+ }
+
+ return t.UnixNano() / 1e6, nil
+}
+
+func parseDatetimeObject(data *extJSONObject) (d int64, err error) {
+ dFound := false
+
+ for i, key := range data.keys {
+ val := data.values[i]
+
+ switch key {
+ case "$numberLong":
+ if dFound {
+ return 0, errors.New("duplicate $numberLong key in $date")
+ }
+
+ if val.t != bsontype.String {
+ return 0, fmt.Errorf("$date $numberLong field should be string, but instead is %s", val.t)
+ }
+
+ d, err = val.parseInt64()
+ if err != nil {
+ return 0, err
+ }
+ dFound = true
+ default:
+ return 0, fmt.Errorf("invalid key in $date object: %s", key)
+ }
+ }
+
+ if !dFound {
+ return 0, errors.New("missing $numberLong field in $date object")
+ }
+
+ return d, nil
+}
+
+func (ejv *extJSONValue) parseDecimal128() (primitive.Decimal128, error) {
+ if ejv.t != bsontype.String {
+ return primitive.Decimal128{}, fmt.Errorf("$numberDecimal value should be string, but instead is %s", ejv.t)
+ }
+
+ d, err := primitive.ParseDecimal128(ejv.v.(string))
+ if err != nil {
+ return primitive.Decimal128{}, fmt.Errorf("$invalid $numberDecimal string: %s", ejv.v.(string))
+ }
+
+ return d, nil
+}
+
+func (ejv *extJSONValue) parseDouble() (float64, error) {
+ if ejv.t == bsontype.Double {
+ return ejv.v.(float64), nil
+ }
+
+ if ejv.t != bsontype.String {
+ return 0, fmt.Errorf("$numberDouble value should be string, but instead is %s", ejv.t)
+ }
+
+ switch string(ejv.v.(string)) {
+ case "Infinity":
+ return math.Inf(1), nil
+ case "-Infinity":
+ return math.Inf(-1), nil
+ case "NaN":
+ return math.NaN(), nil
+ }
+
+ f, err := strconv.ParseFloat(ejv.v.(string), 64)
+ if err != nil {
+ return 0, err
+ }
+
+ return f, nil
+}
+
+func (ejv *extJSONValue) parseInt32() (int32, error) {
+ if ejv.t == bsontype.Int32 {
+ return ejv.v.(int32), nil
+ }
+
+ if ejv.t != bsontype.String {
+ return 0, fmt.Errorf("$numberInt value should be string, but instead is %s", ejv.t)
+ }
+
+ i, err := strconv.ParseInt(ejv.v.(string), 10, 64)
+ if err != nil {
+ return 0, err
+ }
+
+ if i < math.MinInt32 || i > math.MaxInt32 {
+ return 0, fmt.Errorf("$numberInt value should be int32 but instead is int64: %d", i)
+ }
+
+ return int32(i), nil
+}
+
+func (ejv *extJSONValue) parseInt64() (int64, error) {
+ if ejv.t == bsontype.Int64 {
+ return ejv.v.(int64), nil
+ }
+
+ if ejv.t != bsontype.String {
+ return 0, fmt.Errorf("$numberLong value should be string, but instead is %s", ejv.t)
+ }
+
+ i, err := strconv.ParseInt(ejv.v.(string), 10, 64)
+ if err != nil {
+ return 0, err
+ }
+
+ return i, nil
+}
+
+func (ejv *extJSONValue) parseJavascript() (code string, err error) {
+ if ejv.t != bsontype.String {
+ return "", fmt.Errorf("$code value should be string, but instead is %s", ejv.t)
+ }
+
+ return ejv.v.(string), nil
+}
+
+func (ejv *extJSONValue) parseMinMaxKey(minmax string) error {
+ if ejv.t != bsontype.Int32 {
+ return fmt.Errorf("$%sKey value should be int32, but instead is %s", minmax, ejv.t)
+ }
+
+ if ejv.v.(int32) != 1 {
+ return fmt.Errorf("$%sKey value must be 1, but instead is %d", minmax, ejv.v.(int32))
+ }
+
+ return nil
+}
+
+func (ejv *extJSONValue) parseObjectID() (primitive.ObjectID, error) {
+ if ejv.t != bsontype.String {
+ return primitive.NilObjectID, fmt.Errorf("$oid value should be string, but instead is %s", ejv.t)
+ }
+
+ return primitive.ObjectIDFromHex(ejv.v.(string))
+}
+
+func (ejv *extJSONValue) parseRegex() (pattern, options string, err error) {
+ if ejv.t != bsontype.EmbeddedDocument {
+ return "", "", fmt.Errorf("$regularExpression value should be object, but instead is %s", ejv.t)
+ }
+
+ regexObj := ejv.v.(*extJSONObject)
+ patFound := false
+ optFound := false
+
+ for i, key := range regexObj.keys {
+ val := regexObj.values[i]
+
+ switch string(key) {
+ case "pattern":
+ if patFound {
+ return "", "", errors.New("duplicate pattern key in $regularExpression")
+ }
+
+ if val.t != bsontype.String {
+ return "", "", fmt.Errorf("$regularExpression pattern value should be string, but instead is %s", val.t)
+ }
+
+ pattern = val.v.(string)
+ patFound = true
+ case "options":
+ if optFound {
+ return "", "", errors.New("duplicate options key in $regularExpression")
+ }
+
+ if val.t != bsontype.String {
+ return "", "", fmt.Errorf("$regularExpression options value should be string, but instead is %s", val.t)
+ }
+
+ options = val.v.(string)
+ optFound = true
+ default:
+ return "", "", fmt.Errorf("invalid key in $regularExpression object: %s", key)
+ }
+ }
+
+ if !patFound {
+ return "", "", errors.New("missing pattern field in $regularExpression object")
+ }
+
+ if !optFound {
+ return "", "", errors.New("missing options field in $regularExpression object")
+
+ }
+
+ return pattern, options, nil
+}
+
+func (ejv *extJSONValue) parseSymbol() (string, error) {
+ if ejv.t != bsontype.String {
+ return "", fmt.Errorf("$symbol value should be string, but instead is %s", ejv.t)
+ }
+
+ return ejv.v.(string), nil
+}
+
+func (ejv *extJSONValue) parseTimestamp() (t, i uint32, err error) {
+ if ejv.t != bsontype.EmbeddedDocument {
+ return 0, 0, fmt.Errorf("$timestamp value should be object, but instead is %s", ejv.t)
+ }
+
+ handleKey := func(key string, val *extJSONValue, flag bool) (uint32, error) {
+ if flag {
+ return 0, fmt.Errorf("duplicate %s key in $timestamp", key)
+ }
+
+ switch val.t {
+ case bsontype.Int32:
+ if val.v.(int32) < 0 {
+ return 0, fmt.Errorf("$timestamp %s number should be uint32: %s", key, string(val.v.(int32)))
+ }
+
+ return uint32(val.v.(int32)), nil
+ case bsontype.Int64:
+ if val.v.(int64) < 0 || uint32(val.v.(int64)) > math.MaxUint32 {
+ return 0, fmt.Errorf("$timestamp %s number should be uint32: %s", key, string(val.v.(int32)))
+ }
+
+ return uint32(val.v.(int64)), nil
+ default:
+ return 0, fmt.Errorf("$timestamp %s value should be uint32, but instead is %s", key, val.t)
+ }
+ }
+
+ tsObj := ejv.v.(*extJSONObject)
+ tFound := false
+ iFound := false
+
+ for j, key := range tsObj.keys {
+ val := tsObj.values[j]
+
+ switch key {
+ case "t":
+ if t, err = handleKey(key, val, tFound); err != nil {
+ return 0, 0, err
+ }
+
+ tFound = true
+ case "i":
+ if i, err = handleKey(key, val, iFound); err != nil {
+ return 0, 0, err
+ }
+
+ iFound = true
+ default:
+ return 0, 0, fmt.Errorf("invalid key in $timestamp object: %s", key)
+ }
+ }
+
+ if !tFound {
+ return 0, 0, errors.New("missing t field in $timestamp object")
+ }
+
+ if !iFound {
+ return 0, 0, errors.New("missing i field in $timestamp object")
+ }
+
+ return t, i, nil
+}
+
+func (ejv *extJSONValue) parseUndefined() error {
+ if ejv.t != bsontype.Boolean {
+ return fmt.Errorf("undefined value should be boolean, but instead is %s", ejv.t)
+ }
+
+ if !ejv.v.(bool) {
+ return fmt.Errorf("$undefined balue boolean should be true, but instead is %v", ejv.v.(bool))
+ }
+
+ return nil
+}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/extjson_writer.go b/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/extjson_writer.go
new file mode 100644
index 0000000..04fbb56
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/extjson_writer.go
@@ -0,0 +1,734 @@
+// 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 (
+ "bytes"
+ "encoding/base64"
+ "fmt"
+ "github.com/mongodb/mongo-go-driver/bson/primitive"
+ "io"
+ "math"
+ "sort"
+ "strconv"
+ "strings"
+ "sync"
+ "time"
+ "unicode/utf8"
+)
+
+var ejvwPool = sync.Pool{
+ New: func() interface{} {
+ return new(extJSONValueWriter)
+ },
+}
+
+// ExtJSONValueWriterPool is a pool for ExtJSON ValueWriters.
+type ExtJSONValueWriterPool struct {
+ pool sync.Pool
+}
+
+// NewExtJSONValueWriterPool creates a new pool for ValueWriter instances that write to ExtJSON.
+func NewExtJSONValueWriterPool() *ExtJSONValueWriterPool {
+ return &ExtJSONValueWriterPool{
+ pool: sync.Pool{
+ New: func() interface{} {
+ return new(extJSONValueWriter)
+ },
+ },
+ }
+}
+
+// Get retrieves a ExtJSON ValueWriter from the pool and resets it to use w as the destination.
+func (bvwp *ExtJSONValueWriterPool) Get(w io.Writer, canonical, escapeHTML bool) ValueWriter {
+ vw := bvwp.pool.Get().(*extJSONValueWriter)
+ if writer, ok := w.(*SliceWriter); ok {
+ vw.reset(*writer, canonical, escapeHTML)
+ vw.w = writer
+ return vw
+ }
+ vw.buf = vw.buf[:0]
+ vw.w = w
+ return vw
+}
+
+// Put inserts a ValueWriter into the pool. If the ValueWriter is not a ExtJSON ValueWriter, nothing
+// happens and ok will be false.
+func (bvwp *ExtJSONValueWriterPool) Put(vw ValueWriter) (ok bool) {
+ bvw, ok := vw.(*extJSONValueWriter)
+ if !ok {
+ return false
+ }
+
+ if _, ok := bvw.w.(*SliceWriter); ok {
+ bvw.buf = nil
+ }
+ bvw.w = nil
+
+ bvwp.pool.Put(bvw)
+ return true
+}
+
+type ejvwState struct {
+ mode mode
+}
+
+type extJSONValueWriter struct {
+ w io.Writer
+ buf []byte
+
+ stack []ejvwState
+ frame int64
+ canonical bool
+ escapeHTML bool
+}
+
+// NewExtJSONValueWriter creates a ValueWriter that writes Extended JSON to w.
+func NewExtJSONValueWriter(w io.Writer, canonical, escapeHTML bool) (ValueWriter, error) {
+ if w == nil {
+ return nil, errNilWriter
+ }
+
+ return newExtJSONWriter(w, canonical, escapeHTML), nil
+}
+
+func newExtJSONWriter(w io.Writer, canonical, escapeHTML bool) *extJSONValueWriter {
+ stack := make([]ejvwState, 1, 5)
+ stack[0] = ejvwState{mode: mTopLevel}
+
+ return &extJSONValueWriter{
+ w: w,
+ buf: []byte{},
+ stack: stack,
+ canonical: canonical,
+ escapeHTML: escapeHTML,
+ }
+}
+
+func newExtJSONWriterFromSlice(buf []byte, canonical, escapeHTML bool) *extJSONValueWriter {
+ stack := make([]ejvwState, 1, 5)
+ stack[0] = ejvwState{mode: mTopLevel}
+
+ return &extJSONValueWriter{
+ buf: buf,
+ stack: stack,
+ canonical: canonical,
+ escapeHTML: escapeHTML,
+ }
+}
+
+func (ejvw *extJSONValueWriter) reset(buf []byte, canonical, escapeHTML bool) {
+ if ejvw.stack == nil {
+ ejvw.stack = make([]ejvwState, 1, 5)
+ }
+
+ ejvw.stack = ejvw.stack[:1]
+ ejvw.stack[0] = ejvwState{mode: mTopLevel}
+ ejvw.canonical = canonical
+ ejvw.escapeHTML = escapeHTML
+ ejvw.frame = 0
+ ejvw.buf = buf
+ ejvw.w = nil
+}
+
+func (ejvw *extJSONValueWriter) advanceFrame() {
+ if ejvw.frame+1 >= int64(len(ejvw.stack)) { // We need to grow the stack
+ length := len(ejvw.stack)
+ if length+1 >= cap(ejvw.stack) {
+ // double it
+ buf := make([]ejvwState, 2*cap(ejvw.stack)+1)
+ copy(buf, ejvw.stack)
+ ejvw.stack = buf
+ }
+ ejvw.stack = ejvw.stack[:length+1]
+ }
+ ejvw.frame++
+}
+
+func (ejvw *extJSONValueWriter) push(m mode) {
+ ejvw.advanceFrame()
+
+ ejvw.stack[ejvw.frame].mode = m
+}
+
+func (ejvw *extJSONValueWriter) pop() {
+ switch ejvw.stack[ejvw.frame].mode {
+ case mElement, mValue:
+ ejvw.frame--
+ case mDocument, mArray, mCodeWithScope:
+ ejvw.frame -= 2 // we pop twice to jump over the mElement: mDocument -> mElement -> mDocument/mTopLevel/etc...
+ }
+}
+
+func (ejvw *extJSONValueWriter) invalidTransitionErr(destination mode, name string, modes []mode) error {
+ te := TransitionError{
+ name: name,
+ current: ejvw.stack[ejvw.frame].mode,
+ destination: destination,
+ modes: modes,
+ action: "write",
+ }
+ if ejvw.frame != 0 {
+ te.parent = ejvw.stack[ejvw.frame-1].mode
+ }
+ return te
+}
+
+func (ejvw *extJSONValueWriter) ensureElementValue(destination mode, callerName string, addmodes ...mode) error {
+ switch ejvw.stack[ejvw.frame].mode {
+ case mElement, mValue:
+ default:
+ modes := []mode{mElement, mValue}
+ if addmodes != nil {
+ modes = append(modes, addmodes...)
+ }
+ return ejvw.invalidTransitionErr(destination, callerName, modes)
+ }
+
+ return nil
+}
+
+func (ejvw *extJSONValueWriter) writeExtendedSingleValue(key string, value string, quotes bool) {
+ var s string
+ if quotes {
+ s = fmt.Sprintf(`{"$%s":"%s"}`, key, value)
+ } else {
+ s = fmt.Sprintf(`{"$%s":%s}`, key, value)
+ }
+
+ ejvw.buf = append(ejvw.buf, []byte(s)...)
+}
+
+func (ejvw *extJSONValueWriter) WriteArray() (ArrayWriter, error) {
+ if err := ejvw.ensureElementValue(mArray, "WriteArray"); err != nil {
+ return nil, err
+ }
+
+ ejvw.buf = append(ejvw.buf, '[')
+
+ ejvw.push(mArray)
+ return ejvw, nil
+}
+
+func (ejvw *extJSONValueWriter) WriteBinary(b []byte) error {
+ return ejvw.WriteBinaryWithSubtype(b, 0x00)
+}
+
+func (ejvw *extJSONValueWriter) WriteBinaryWithSubtype(b []byte, btype byte) error {
+ if err := ejvw.ensureElementValue(mode(0), "WriteBinaryWithSubtype"); err != nil {
+ return err
+ }
+
+ var buf bytes.Buffer
+ buf.WriteString(`{"$binary":{"base64":"`)
+ buf.WriteString(base64.StdEncoding.EncodeToString(b))
+ buf.WriteString(fmt.Sprintf(`","subType":"%02x"}},`, btype))
+
+ ejvw.buf = append(ejvw.buf, buf.Bytes()...)
+
+ ejvw.pop()
+ return nil
+}
+
+func (ejvw *extJSONValueWriter) WriteBoolean(b bool) error {
+ if err := ejvw.ensureElementValue(mode(0), "WriteBoolean"); err != nil {
+ return err
+ }
+
+ ejvw.buf = append(ejvw.buf, []byte(strconv.FormatBool(b))...)
+ ejvw.buf = append(ejvw.buf, ',')
+
+ ejvw.pop()
+ return nil
+}
+
+func (ejvw *extJSONValueWriter) WriteCodeWithScope(code string) (DocumentWriter, error) {
+ if err := ejvw.ensureElementValue(mCodeWithScope, "WriteCodeWithScope"); err != nil {
+ return nil, err
+ }
+
+ var buf bytes.Buffer
+ buf.WriteString(`{"$code":`)
+ writeStringWithEscapes(code, &buf, ejvw.escapeHTML)
+ buf.WriteString(`,"$scope":{`)
+
+ ejvw.buf = append(ejvw.buf, buf.Bytes()...)
+
+ ejvw.push(mCodeWithScope)
+ return ejvw, nil
+}
+
+func (ejvw *extJSONValueWriter) WriteDBPointer(ns string, oid primitive.ObjectID) error {
+ if err := ejvw.ensureElementValue(mode(0), "WriteDBPointer"); err != nil {
+ return err
+ }
+
+ var buf bytes.Buffer
+ buf.WriteString(`{"$dbPointer":{"$ref":"`)
+ buf.WriteString(ns)
+ buf.WriteString(`","$id":{"$oid":"`)
+ buf.WriteString(oid.Hex())
+ buf.WriteString(`"}}},`)
+
+ ejvw.buf = append(ejvw.buf, buf.Bytes()...)
+
+ ejvw.pop()
+ return nil
+}
+
+func (ejvw *extJSONValueWriter) WriteDateTime(dt int64) error {
+ if err := ejvw.ensureElementValue(mode(0), "WriteDateTime"); err != nil {
+ return err
+ }
+
+ t := time.Unix(dt/1e3, dt%1e3*1e6).UTC()
+
+ if ejvw.canonical || t.Year() < 1970 || t.Year() > 9999 {
+ s := fmt.Sprintf(`{"$numberLong":"%d"}`, dt)
+ ejvw.writeExtendedSingleValue("date", s, false)
+ } else {
+ ejvw.writeExtendedSingleValue("date", t.Format(rfc3339Milli), true)
+ }
+
+ ejvw.buf = append(ejvw.buf, ',')
+
+ ejvw.pop()
+ return nil
+}
+
+func (ejvw *extJSONValueWriter) WriteDecimal128(d primitive.Decimal128) error {
+ if err := ejvw.ensureElementValue(mode(0), "WriteDecimal128"); err != nil {
+ return err
+ }
+
+ ejvw.writeExtendedSingleValue("numberDecimal", d.String(), true)
+ ejvw.buf = append(ejvw.buf, ',')
+
+ ejvw.pop()
+ return nil
+}
+
+func (ejvw *extJSONValueWriter) WriteDocument() (DocumentWriter, error) {
+ if ejvw.stack[ejvw.frame].mode == mTopLevel {
+ ejvw.buf = append(ejvw.buf, '{')
+ return ejvw, nil
+ }
+
+ if err := ejvw.ensureElementValue(mDocument, "WriteDocument", mTopLevel); err != nil {
+ return nil, err
+ }
+
+ ejvw.buf = append(ejvw.buf, '{')
+ ejvw.push(mDocument)
+ return ejvw, nil
+}
+
+func (ejvw *extJSONValueWriter) WriteDouble(f float64) error {
+ if err := ejvw.ensureElementValue(mode(0), "WriteDouble"); err != nil {
+ return err
+ }
+
+ s := formatDouble(f)
+
+ if ejvw.canonical {
+ ejvw.writeExtendedSingleValue("numberDouble", s, true)
+ } else {
+ switch s {
+ case "Infinity":
+ fallthrough
+ case "-Infinity":
+ fallthrough
+ case "NaN":
+ s = fmt.Sprintf(`{"$numberDouble":"%s"}`, s)
+ }
+ ejvw.buf = append(ejvw.buf, []byte(s)...)
+ }
+
+ ejvw.buf = append(ejvw.buf, ',')
+
+ ejvw.pop()
+ return nil
+}
+
+func (ejvw *extJSONValueWriter) WriteInt32(i int32) error {
+ if err := ejvw.ensureElementValue(mode(0), "WriteInt32"); err != nil {
+ return err
+ }
+
+ s := strconv.FormatInt(int64(i), 10)
+
+ if ejvw.canonical {
+ ejvw.writeExtendedSingleValue("numberInt", s, true)
+ } else {
+ ejvw.buf = append(ejvw.buf, []byte(s)...)
+ }
+
+ ejvw.buf = append(ejvw.buf, ',')
+
+ ejvw.pop()
+ return nil
+}
+
+func (ejvw *extJSONValueWriter) WriteInt64(i int64) error {
+ if err := ejvw.ensureElementValue(mode(0), "WriteInt64"); err != nil {
+ return err
+ }
+
+ s := strconv.FormatInt(i, 10)
+
+ if ejvw.canonical {
+ ejvw.writeExtendedSingleValue("numberLong", s, true)
+ } else {
+ ejvw.buf = append(ejvw.buf, []byte(s)...)
+ }
+
+ ejvw.buf = append(ejvw.buf, ',')
+
+ ejvw.pop()
+ return nil
+}
+
+func (ejvw *extJSONValueWriter) WriteJavascript(code string) error {
+ if err := ejvw.ensureElementValue(mode(0), "WriteJavascript"); err != nil {
+ return err
+ }
+
+ var buf bytes.Buffer
+ writeStringWithEscapes(code, &buf, ejvw.escapeHTML)
+
+ ejvw.writeExtendedSingleValue("code", buf.String(), false)
+ ejvw.buf = append(ejvw.buf, ',')
+
+ ejvw.pop()
+ return nil
+}
+
+func (ejvw *extJSONValueWriter) WriteMaxKey() error {
+ if err := ejvw.ensureElementValue(mode(0), "WriteMaxKey"); err != nil {
+ return err
+ }
+
+ ejvw.writeExtendedSingleValue("maxKey", "1", false)
+ ejvw.buf = append(ejvw.buf, ',')
+
+ ejvw.pop()
+ return nil
+}
+
+func (ejvw *extJSONValueWriter) WriteMinKey() error {
+ if err := ejvw.ensureElementValue(mode(0), "WriteMinKey"); err != nil {
+ return err
+ }
+
+ ejvw.writeExtendedSingleValue("minKey", "1", false)
+ ejvw.buf = append(ejvw.buf, ',')
+
+ ejvw.pop()
+ return nil
+}
+
+func (ejvw *extJSONValueWriter) WriteNull() error {
+ if err := ejvw.ensureElementValue(mode(0), "WriteNull"); err != nil {
+ return err
+ }
+
+ ejvw.buf = append(ejvw.buf, []byte("null")...)
+ ejvw.buf = append(ejvw.buf, ',')
+
+ ejvw.pop()
+ return nil
+}
+
+func (ejvw *extJSONValueWriter) WriteObjectID(oid primitive.ObjectID) error {
+ if err := ejvw.ensureElementValue(mode(0), "WriteObjectID"); err != nil {
+ return err
+ }
+
+ ejvw.writeExtendedSingleValue("oid", oid.Hex(), true)
+ ejvw.buf = append(ejvw.buf, ',')
+
+ ejvw.pop()
+ return nil
+}
+
+func (ejvw *extJSONValueWriter) WriteRegex(pattern string, options string) error {
+ if err := ejvw.ensureElementValue(mode(0), "WriteRegex"); err != nil {
+ return err
+ }
+
+ var buf bytes.Buffer
+ buf.WriteString(`{"$regularExpression":{"pattern":`)
+ writeStringWithEscapes(pattern, &buf, ejvw.escapeHTML)
+ buf.WriteString(`,"options":"`)
+ buf.WriteString(sortStringAlphebeticAscending(options))
+ buf.WriteString(`"}},`)
+
+ ejvw.buf = append(ejvw.buf, buf.Bytes()...)
+
+ ejvw.pop()
+ return nil
+}
+
+func (ejvw *extJSONValueWriter) WriteString(s string) error {
+ if err := ejvw.ensureElementValue(mode(0), "WriteString"); err != nil {
+ return err
+ }
+
+ var buf bytes.Buffer
+ writeStringWithEscapes(s, &buf, ejvw.escapeHTML)
+
+ ejvw.buf = append(ejvw.buf, buf.Bytes()...)
+ ejvw.buf = append(ejvw.buf, ',')
+
+ ejvw.pop()
+ return nil
+}
+
+func (ejvw *extJSONValueWriter) WriteSymbol(symbol string) error {
+ if err := ejvw.ensureElementValue(mode(0), "WriteSymbol"); err != nil {
+ return err
+ }
+
+ var buf bytes.Buffer
+ writeStringWithEscapes(symbol, &buf, ejvw.escapeHTML)
+
+ ejvw.writeExtendedSingleValue("symbol", buf.String(), false)
+ ejvw.buf = append(ejvw.buf, ',')
+
+ ejvw.pop()
+ return nil
+}
+
+func (ejvw *extJSONValueWriter) WriteTimestamp(t uint32, i uint32) error {
+ if err := ejvw.ensureElementValue(mode(0), "WriteTimestamp"); err != nil {
+ return err
+ }
+
+ var buf bytes.Buffer
+ buf.WriteString(`{"$timestamp":{"t":`)
+ buf.WriteString(strconv.FormatUint(uint64(t), 10))
+ buf.WriteString(`,"i":`)
+ buf.WriteString(strconv.FormatUint(uint64(i), 10))
+ buf.WriteString(`}},`)
+
+ ejvw.buf = append(ejvw.buf, buf.Bytes()...)
+
+ ejvw.pop()
+ return nil
+}
+
+func (ejvw *extJSONValueWriter) WriteUndefined() error {
+ if err := ejvw.ensureElementValue(mode(0), "WriteUndefined"); err != nil {
+ return err
+ }
+
+ ejvw.writeExtendedSingleValue("undefined", "true", false)
+ ejvw.buf = append(ejvw.buf, ',')
+
+ ejvw.pop()
+ return nil
+}
+
+func (ejvw *extJSONValueWriter) WriteDocumentElement(key string) (ValueWriter, error) {
+ switch ejvw.stack[ejvw.frame].mode {
+ case mDocument, mTopLevel, mCodeWithScope:
+ ejvw.buf = append(ejvw.buf, []byte(fmt.Sprintf(`"%s":`, key))...)
+ ejvw.push(mElement)
+ default:
+ return nil, ejvw.invalidTransitionErr(mElement, "WriteDocumentElement", []mode{mDocument, mTopLevel, mCodeWithScope})
+ }
+
+ return ejvw, nil
+}
+
+func (ejvw *extJSONValueWriter) WriteDocumentEnd() error {
+ switch ejvw.stack[ejvw.frame].mode {
+ case mDocument, mTopLevel, mCodeWithScope:
+ default:
+ return fmt.Errorf("incorrect mode to end document: %s", ejvw.stack[ejvw.frame].mode)
+ }
+
+ // close the document
+ if ejvw.buf[len(ejvw.buf)-1] == ',' {
+ ejvw.buf[len(ejvw.buf)-1] = '}'
+ } else {
+ ejvw.buf = append(ejvw.buf, '}')
+ }
+
+ switch ejvw.stack[ejvw.frame].mode {
+ case mCodeWithScope:
+ ejvw.buf = append(ejvw.buf, '}')
+ fallthrough
+ case mDocument:
+ ejvw.buf = append(ejvw.buf, ',')
+ case mTopLevel:
+ if ejvw.w != nil {
+ if _, err := ejvw.w.Write(ejvw.buf); err != nil {
+ return err
+ }
+ ejvw.buf = ejvw.buf[:0]
+ }
+ }
+
+ ejvw.pop()
+ return nil
+}
+
+func (ejvw *extJSONValueWriter) WriteArrayElement() (ValueWriter, error) {
+ switch ejvw.stack[ejvw.frame].mode {
+ case mArray:
+ ejvw.push(mValue)
+ default:
+ return nil, ejvw.invalidTransitionErr(mValue, "WriteArrayElement", []mode{mArray})
+ }
+
+ return ejvw, nil
+}
+
+func (ejvw *extJSONValueWriter) WriteArrayEnd() error {
+ switch ejvw.stack[ejvw.frame].mode {
+ case mArray:
+ // close the array
+ if ejvw.buf[len(ejvw.buf)-1] == ',' {
+ ejvw.buf[len(ejvw.buf)-1] = ']'
+ } else {
+ ejvw.buf = append(ejvw.buf, ']')
+ }
+
+ ejvw.buf = append(ejvw.buf, ',')
+
+ ejvw.pop()
+ default:
+ return fmt.Errorf("incorrect mode to end array: %s", ejvw.stack[ejvw.frame].mode)
+ }
+
+ return nil
+}
+
+func formatDouble(f float64) string {
+ var s string
+ if math.IsInf(f, 1) {
+ s = "Infinity"
+ } else if math.IsInf(f, -1) {
+ s = "-Infinity"
+ } else if math.IsNaN(f) {
+ s = "NaN"
+ } else {
+ // Print exactly one decimalType place for integers; otherwise, print as many are necessary to
+ // perfectly represent it.
+ s = strconv.FormatFloat(f, 'G', -1, 64)
+ if !strings.ContainsRune(s, 'E') && !strings.ContainsRune(s, '.') {
+ s += ".0"
+ }
+ }
+
+ return s
+}
+
+var hexChars = "0123456789abcdef"
+
+func writeStringWithEscapes(s string, buf *bytes.Buffer, escapeHTML bool) {
+ buf.WriteByte('"')
+ start := 0
+ for i := 0; i < len(s); {
+ if b := s[i]; b < utf8.RuneSelf {
+ if htmlSafeSet[b] || (!escapeHTML && safeSet[b]) {
+ i++
+ continue
+ }
+ if start < i {
+ buf.WriteString(s[start:i])
+ }
+ switch b {
+ case '\\', '"':
+ buf.WriteByte('\\')
+ buf.WriteByte(b)
+ case '\n':
+ buf.WriteByte('\\')
+ buf.WriteByte('n')
+ case '\r':
+ buf.WriteByte('\\')
+ buf.WriteByte('r')
+ case '\t':
+ buf.WriteByte('\\')
+ buf.WriteByte('t')
+ case '\b':
+ buf.WriteByte('\\')
+ buf.WriteByte('b')
+ case '\f':
+ buf.WriteByte('\\')
+ buf.WriteByte('f')
+ default:
+ // This encodes bytes < 0x20 except for \t, \n and \r.
+ // If escapeHTML is set, it also escapes <, >, and &
+ // because they can lead to security holes when
+ // user-controlled strings are rendered into JSON
+ // and served to some browsers.
+ buf.WriteString(`\u00`)
+ buf.WriteByte(hexChars[b>>4])
+ buf.WriteByte(hexChars[b&0xF])
+ }
+ i++
+ start = i
+ continue
+ }
+ c, size := utf8.DecodeRuneInString(s[i:])
+ if c == utf8.RuneError && size == 1 {
+ if start < i {
+ buf.WriteString(s[start:i])
+ }
+ buf.WriteString(`\ufffd`)
+ i += size
+ start = i
+ continue
+ }
+ // U+2028 is LINE SEPARATOR.
+ // U+2029 is PARAGRAPH SEPARATOR.
+ // They are both technically valid characters in JSON strings,
+ // but don't work in JSONP, which has to be evaluated as JavaScript,
+ // and can lead to security holes there. It is valid JSON to
+ // escape them, so we do so unconditionally.
+ // See http://timelessrepo.com/json-isnt-a-javascript-subset for discussion.
+ if c == '\u2028' || c == '\u2029' {
+ if start < i {
+ buf.WriteString(s[start:i])
+ }
+ buf.WriteString(`\u202`)
+ buf.WriteByte(hexChars[c&0xF])
+ i += size
+ start = i
+ continue
+ }
+ i += size
+ }
+ if start < len(s) {
+ buf.WriteString(s[start:])
+ }
+ buf.WriteByte('"')
+}
+
+type sortableString []rune
+
+func (ss sortableString) Len() int {
+ return len(ss)
+}
+
+func (ss sortableString) Less(i, j int) bool {
+ return ss[i] < ss[j]
+}
+
+func (ss sortableString) Swap(i, j int) {
+ oldI := ss[i]
+ ss[i] = ss[j]
+ ss[j] = oldI
+}
+
+func sortStringAlphebeticAscending(s string) string {
+ ss := sortableString([]rune(s))
+ sort.Sort(ss)
+ return string([]rune(ss))
+}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/json_scanner.go b/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/json_scanner.go
new file mode 100644
index 0000000..03aabf5
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/json_scanner.go
@@ -0,0 +1,439 @@
+// 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 (
+ "bytes"
+ "errors"
+ "fmt"
+ "io"
+ "math"
+ "strconv"
+ "strings"
+ "unicode"
+)
+
+type jsonTokenType byte
+
+const (
+ jttBeginObject jsonTokenType = iota
+ jttEndObject
+ jttBeginArray
+ jttEndArray
+ jttColon
+ jttComma
+ jttInt32
+ jttInt64
+ jttDouble
+ jttString
+ jttBool
+ jttNull
+ jttEOF
+)
+
+type jsonToken struct {
+ t jsonTokenType
+ v interface{}
+ p int
+}
+
+type jsonScanner struct {
+ r io.Reader
+ buf []byte
+ pos int
+ lastReadErr error
+}
+
+// nextToken returns the next JSON token if one exists. A token is a character
+// of the JSON grammar, a number, a string, or a literal.
+func (js *jsonScanner) nextToken() (*jsonToken, error) {
+ c, err := js.readNextByte()
+
+ // keep reading until a non-space is encountered (break on read error or EOF)
+ for isWhiteSpace(c) && err == nil {
+ c, err = js.readNextByte()
+ }
+
+ if err == io.EOF {
+ return &jsonToken{t: jttEOF}, nil
+ } else if err != nil {
+ return nil, err
+ }
+
+ // switch on the character
+ switch c {
+ case '{':
+ return &jsonToken{t: jttBeginObject, v: byte('{'), p: js.pos - 1}, nil
+ case '}':
+ return &jsonToken{t: jttEndObject, v: byte('}'), p: js.pos - 1}, nil
+ case '[':
+ return &jsonToken{t: jttBeginArray, v: byte('['), p: js.pos - 1}, nil
+ case ']':
+ return &jsonToken{t: jttEndArray, v: byte(']'), p: js.pos - 1}, nil
+ case ':':
+ return &jsonToken{t: jttColon, v: byte(':'), p: js.pos - 1}, nil
+ case ',':
+ return &jsonToken{t: jttComma, v: byte(','), p: js.pos - 1}, nil
+ case '"': // RFC-8259 only allows for double quotes (") not single (')
+ return js.scanString()
+ default:
+ // check if it's a number
+ if c == '-' || isDigit(c) {
+ return js.scanNumber(c)
+ } else if c == 't' || c == 'f' || c == 'n' {
+ // maybe a literal
+ return js.scanLiteral(c)
+ } else {
+ return nil, fmt.Errorf("invalid JSON input. Position: %d. Character: %c", js.pos-1, c)
+ }
+ }
+}
+
+// readNextByte attempts to read the next byte from the buffer. If the buffer
+// has been exhausted, this function calls readIntoBuf, thus refilling the
+// buffer and resetting the read position to 0
+func (js *jsonScanner) readNextByte() (byte, error) {
+ if js.pos >= len(js.buf) {
+ err := js.readIntoBuf()
+
+ if err != nil {
+ return 0, err
+ }
+ }
+
+ b := js.buf[js.pos]
+ js.pos++
+
+ return b, nil
+}
+
+// readNNextBytes reads n bytes into dst, starting at offset
+func (js *jsonScanner) readNNextBytes(dst []byte, n, offset int) error {
+ var err error
+
+ for i := 0; i < n; i++ {
+ dst[i+offset], err = js.readNextByte()
+ if err != nil {
+ return err
+ }
+ }
+
+ return nil
+}
+
+// readIntoBuf reads up to 512 bytes from the scanner's io.Reader into the buffer
+func (js *jsonScanner) readIntoBuf() error {
+ if js.lastReadErr != nil {
+ js.buf = js.buf[:0]
+ js.pos = 0
+ return js.lastReadErr
+ }
+
+ if cap(js.buf) == 0 {
+ js.buf = make([]byte, 0, 512)
+ }
+
+ n, err := js.r.Read(js.buf[:cap(js.buf)])
+ if err != nil {
+ js.lastReadErr = err
+ if n > 0 {
+ err = nil
+ }
+ }
+ js.buf = js.buf[:n]
+ js.pos = 0
+
+ return err
+}
+
+func isWhiteSpace(c byte) bool {
+ return c == ' ' || c == '\t' || c == '\r' || c == '\n'
+}
+
+func isDigit(c byte) bool {
+ return unicode.IsDigit(rune(c))
+}
+
+func isValueTerminator(c byte) bool {
+ return c == ',' || c == '}' || c == ']' || isWhiteSpace(c)
+}
+
+// scanString reads from an opening '"' to a closing '"' and handles escaped characters
+func (js *jsonScanner) scanString() (*jsonToken, error) {
+ var b bytes.Buffer
+ var c byte
+ var err error
+
+ p := js.pos - 1
+
+ for {
+ c, err = js.readNextByte()
+ if err != nil {
+ if err == io.EOF {
+ return nil, errors.New("end of input in JSON string")
+ }
+ return nil, err
+ }
+
+ switch c {
+ case '\\':
+ c, err = js.readNextByte()
+ switch c {
+ case '"', '\\', '/', '\'':
+ b.WriteByte(c)
+ case 'b':
+ b.WriteByte('\b')
+ case 'f':
+ b.WriteByte('\f')
+ case 'n':
+ b.WriteByte('\n')
+ case 'r':
+ b.WriteByte('\r')
+ case 't':
+ b.WriteByte('\t')
+ case 'u':
+ us := make([]byte, 4)
+ err = js.readNNextBytes(us, 4, 0)
+ if err != nil {
+ return nil, fmt.Errorf("invalid unicode sequence in JSON string: %s", us)
+ }
+
+ s := fmt.Sprintf(`\u%s`, us)
+ s, err = strconv.Unquote(strings.Replace(strconv.Quote(s), `\\u`, `\u`, 1))
+ if err != nil {
+ return nil, err
+ }
+
+ b.WriteString(s)
+ default:
+ return nil, fmt.Errorf("invalid escape sequence in JSON string '\\%c'", c)
+ }
+ case '"':
+ return &jsonToken{t: jttString, v: b.String(), p: p}, nil
+ default:
+ b.WriteByte(c)
+ }
+ }
+}
+
+// scanLiteral reads an unquoted sequence of characters and determines if it is one of
+// three valid JSON literals (true, false, null); if so, it returns the appropriate
+// jsonToken; otherwise, it returns an error
+func (js *jsonScanner) scanLiteral(first byte) (*jsonToken, error) {
+ p := js.pos - 1
+
+ lit := make([]byte, 4)
+ lit[0] = first
+
+ err := js.readNNextBytes(lit, 3, 1)
+ if err != nil {
+ return nil, err
+ }
+
+ c5, err := js.readNextByte()
+
+ if bytes.Equal([]byte("true"), lit) && (isValueTerminator(c5) || err == io.EOF) {
+ js.pos = int(math.Max(0, float64(js.pos-1)))
+ return &jsonToken{t: jttBool, v: true, p: p}, nil
+ } else if bytes.Equal([]byte("null"), lit) && (isValueTerminator(c5) || err == io.EOF) {
+ js.pos = int(math.Max(0, float64(js.pos-1)))
+ return &jsonToken{t: jttNull, v: nil, p: p}, nil
+ } else if bytes.Equal([]byte("fals"), lit) {
+ if c5 == 'e' {
+ c5, err = js.readNextByte()
+
+ if isValueTerminator(c5) || err == io.EOF {
+ js.pos = int(math.Max(0, float64(js.pos-1)))
+ return &jsonToken{t: jttBool, v: false, p: p}, nil
+ }
+ }
+ }
+
+ return nil, fmt.Errorf("invalid JSON literal. Position: %d, literal: %s", p, lit)
+}
+
+type numberScanState byte
+
+const (
+ nssSawLeadingMinus numberScanState = iota
+ nssSawLeadingZero
+ nssSawIntegerDigits
+ nssSawDecimalPoint
+ nssSawFractionDigits
+ nssSawExponentLetter
+ nssSawExponentSign
+ nssSawExponentDigits
+ nssDone
+ nssInvalid
+)
+
+// scanNumber reads a JSON number (according to RFC-8259)
+func (js *jsonScanner) scanNumber(first byte) (*jsonToken, error) {
+ var b bytes.Buffer
+ var s numberScanState
+ var c byte
+ var err error
+
+ t := jttInt64 // assume it's an int64 until the type can be determined
+ start := js.pos - 1
+
+ b.WriteByte(first)
+
+ switch first {
+ case '-':
+ s = nssSawLeadingMinus
+ case '0':
+ s = nssSawLeadingZero
+ default:
+ s = nssSawIntegerDigits
+ }
+
+ for {
+ c, err = js.readNextByte()
+
+ if err != nil && err != io.EOF {
+ return nil, err
+ }
+
+ switch s {
+ case nssSawLeadingMinus:
+ switch c {
+ case '0':
+ s = nssSawLeadingZero
+ b.WriteByte(c)
+ default:
+ if isDigit(c) {
+ s = nssSawIntegerDigits
+ b.WriteByte(c)
+ } else {
+ s = nssInvalid
+ }
+ }
+ case nssSawLeadingZero:
+ switch c {
+ case '.':
+ s = nssSawDecimalPoint
+ b.WriteByte(c)
+ case 'e', 'E':
+ s = nssSawExponentLetter
+ b.WriteByte(c)
+ case '}', ']', ',':
+ s = nssDone
+ default:
+ if isWhiteSpace(c) || err == io.EOF {
+ s = nssDone
+ } else {
+ s = nssInvalid
+ }
+ }
+ case nssSawIntegerDigits:
+ switch c {
+ case '.':
+ s = nssSawDecimalPoint
+ b.WriteByte(c)
+ case 'e', 'E':
+ s = nssSawExponentLetter
+ b.WriteByte(c)
+ case '}', ']', ',':
+ s = nssDone
+ default:
+ if isWhiteSpace(c) || err == io.EOF {
+ s = nssDone
+ } else if isDigit(c) {
+ s = nssSawIntegerDigits
+ b.WriteByte(c)
+ } else {
+ s = nssInvalid
+ }
+ }
+ case nssSawDecimalPoint:
+ t = jttDouble
+ if isDigit(c) {
+ s = nssSawFractionDigits
+ b.WriteByte(c)
+ } else {
+ s = nssInvalid
+ }
+ case nssSawFractionDigits:
+ switch c {
+ case 'e', 'E':
+ s = nssSawExponentLetter
+ b.WriteByte(c)
+ case '}', ']', ',':
+ s = nssDone
+ default:
+ if isWhiteSpace(c) || err == io.EOF {
+ s = nssDone
+ } else if isDigit(c) {
+ s = nssSawFractionDigits
+ b.WriteByte(c)
+ } else {
+ s = nssInvalid
+ }
+ }
+ case nssSawExponentLetter:
+ t = jttDouble
+ switch c {
+ case '+', '-':
+ s = nssSawExponentSign
+ b.WriteByte(c)
+ default:
+ if isDigit(c) {
+ s = nssSawExponentDigits
+ b.WriteByte(c)
+ } else {
+ s = nssInvalid
+ }
+ }
+ case nssSawExponentSign:
+ if isDigit(c) {
+ s = nssSawExponentDigits
+ b.WriteByte(c)
+ } else {
+ s = nssInvalid
+ }
+ case nssSawExponentDigits:
+ switch c {
+ case '}', ']', ',':
+ s = nssDone
+ default:
+ if isWhiteSpace(c) || err == io.EOF {
+ s = nssDone
+ } else if isDigit(c) {
+ s = nssSawExponentDigits
+ b.WriteByte(c)
+ } else {
+ s = nssInvalid
+ }
+ }
+ }
+
+ switch s {
+ case nssInvalid:
+ return nil, fmt.Errorf("invalid JSON number. Position: %d", start)
+ case nssDone:
+ js.pos = int(math.Max(0, float64(js.pos-1)))
+ if t != jttDouble {
+ v, err := strconv.ParseInt(b.String(), 10, 64)
+ if err == nil {
+ if v < math.MinInt32 || v > math.MaxInt32 {
+ return &jsonToken{t: jttInt64, v: v, p: start}, nil
+ }
+
+ return &jsonToken{t: jttInt32, v: int32(v), p: start}, nil
+ }
+ }
+
+ v, err := strconv.ParseFloat(b.String(), 64)
+ if err != nil {
+ return nil, err
+ }
+
+ return &jsonToken{t: jttDouble, v: v, p: start}, nil
+ }
+ }
+}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/mode.go b/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/mode.go
new file mode 100644
index 0000000..617b5e2
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/mode.go
@@ -0,0 +1,108 @@
+// 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"
+)
+
+type mode int
+
+const (
+ _ mode = iota
+ mTopLevel
+ mDocument
+ mArray
+ mValue
+ mElement
+ mCodeWithScope
+ mSpacer
+)
+
+func (m mode) String() string {
+ var str string
+
+ switch m {
+ case mTopLevel:
+ str = "TopLevel"
+ case mDocument:
+ str = "DocumentMode"
+ case mArray:
+ str = "ArrayMode"
+ case mValue:
+ str = "ValueMode"
+ case mElement:
+ str = "ElementMode"
+ case mCodeWithScope:
+ str = "CodeWithScopeMode"
+ case mSpacer:
+ str = "CodeWithScopeSpacerFrame"
+ default:
+ str = "UnknownMode"
+ }
+
+ return str
+}
+
+func (m mode) TypeString() string {
+ var str string
+
+ switch m {
+ case mTopLevel:
+ str = "TopLevel"
+ case mDocument:
+ str = "Document"
+ case mArray:
+ str = "Array"
+ case mValue:
+ str = "Value"
+ case mElement:
+ str = "Element"
+ case mCodeWithScope:
+ str = "CodeWithScope"
+ case mSpacer:
+ str = "CodeWithScopeSpacer"
+ default:
+ str = "Unknown"
+ }
+
+ return str
+}
+
+// TransitionError is an error returned when an invalid progressing a
+// ValueReader or ValueWriter state machine occurs.
+// If read is false, the error is for writing
+type TransitionError struct {
+ name string
+ parent mode
+ current mode
+ destination mode
+ modes []mode
+ action string
+}
+
+func (te TransitionError) Error() string {
+ errString := fmt.Sprintf("%s can only %s", te.name, te.action)
+ if te.destination != mode(0) {
+ errString = fmt.Sprintf("%s a %s", errString, te.destination.TypeString())
+ }
+ errString = fmt.Sprintf("%s while positioned on a", errString)
+ for ind, m := range te.modes {
+ if ind != 0 && len(te.modes) > 2 {
+ errString = fmt.Sprintf("%s,", errString)
+ }
+ if ind == len(te.modes)-1 && len(te.modes) > 1 {
+ errString = fmt.Sprintf("%s or", errString)
+ }
+ errString = fmt.Sprintf("%s %s", errString, m.TypeString())
+ }
+ errString = fmt.Sprintf("%s but is positioned on a %s", errString, te.current.TypeString())
+ if te.parent != mode(0) {
+ errString = fmt.Sprintf("%s with parent %s", errString, te.parent.TypeString())
+ }
+ return errString
+}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/reader.go b/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/reader.go
new file mode 100644
index 0000000..ecae739
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/reader.go
@@ -0,0 +1,63 @@
+// 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 (
+ "github.com/mongodb/mongo-go-driver/bson/bsontype"
+ "github.com/mongodb/mongo-go-driver/bson/primitive"
+)
+
+// ArrayReader is implemented by types that allow reading values from a BSON
+// array.
+type ArrayReader interface {
+ ReadValue() (ValueReader, error)
+}
+
+// DocumentReader is implemented by types that allow reading elements from a
+// BSON document.
+type DocumentReader interface {
+ ReadElement() (string, ValueReader, error)
+}
+
+// ValueReader is a generic interface used to read values from BSON. This type
+// is implemented by several types with different underlying representations of
+// BSON, such as a bson.Document, raw BSON bytes, or extended JSON.
+type ValueReader interface {
+ Type() bsontype.Type
+ Skip() error
+
+ ReadArray() (ArrayReader, error)
+ ReadBinary() (b []byte, btype byte, err error)
+ ReadBoolean() (bool, error)
+ ReadDocument() (DocumentReader, error)
+ ReadCodeWithScope() (code string, dr DocumentReader, err error)
+ ReadDBPointer() (ns string, oid primitive.ObjectID, err error)
+ ReadDateTime() (int64, error)
+ ReadDecimal128() (primitive.Decimal128, error)
+ ReadDouble() (float64, error)
+ ReadInt32() (int32, error)
+ ReadInt64() (int64, error)
+ ReadJavascript() (code string, err error)
+ ReadMaxKey() error
+ ReadMinKey() error
+ ReadNull() error
+ ReadObjectID() (primitive.ObjectID, error)
+ ReadRegex() (pattern, options string, err error)
+ ReadString() (string, error)
+ ReadSymbol() (symbol string, err error)
+ ReadTimestamp() (t, i uint32, err error)
+ ReadUndefined() error
+}
+
+// BytesReader is a generic interface used to read BSON bytes from a
+// ValueReader. This imterface is meant to be a superset of ValueReader, so that
+// types that implement ValueReader may also implement this interface.
+//
+// The bytes of the value will be appended to dst.
+type BytesReader interface {
+ ReadValueBytes(dst []byte) (bsontype.Type, []byte, error)
+}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/value_reader.go b/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/value_reader.go
new file mode 100644
index 0000000..5fc0d8a
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/value_reader.go
@@ -0,0 +1,882 @@
+// 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 (
+ "bytes"
+ "encoding/binary"
+ "errors"
+ "fmt"
+ "io"
+ "math"
+ "sync"
+ "unicode"
+
+ "github.com/mongodb/mongo-go-driver/bson/bsontype"
+ "github.com/mongodb/mongo-go-driver/bson/primitive"
+)
+
+var _ ValueReader = (*valueReader)(nil)
+
+var vrPool = sync.Pool{
+ New: func() interface{} {
+ return new(valueReader)
+ },
+}
+
+// BSONValueReaderPool is a pool for ValueReaders that read BSON.
+type BSONValueReaderPool struct {
+ pool sync.Pool
+}
+
+// NewBSONValueReaderPool instantiates a new BSONValueReaderPool.
+func NewBSONValueReaderPool() *BSONValueReaderPool {
+ return &BSONValueReaderPool{
+ pool: sync.Pool{
+ New: func() interface{} {
+ return new(valueReader)
+ },
+ },
+ }
+}
+
+// Get retrieves a ValueReader from the pool and uses src as the underlying BSON.
+func (bvrp *BSONValueReaderPool) Get(src []byte) ValueReader {
+ vr := bvrp.pool.Get().(*valueReader)
+ vr.reset(src)
+ return vr
+}
+
+// Put inserts a ValueReader into the pool. If the ValueReader is not a BSON ValueReader nothing
+// is inserted into the pool and ok will be false.
+func (bvrp *BSONValueReaderPool) Put(vr ValueReader) (ok bool) {
+ bvr, ok := vr.(*valueReader)
+ if !ok {
+ return false
+ }
+
+ bvr.reset(nil)
+ bvrp.pool.Put(bvr)
+ return true
+}
+
+// ErrEOA is the error returned when the end of a BSON array has been reached.
+var ErrEOA = errors.New("end of array")
+
+// ErrEOD is the error returned when the end of a BSON document has been reached.
+var ErrEOD = errors.New("end of document")
+
+type vrState struct {
+ mode mode
+ vType bsontype.Type
+ end int64
+}
+
+// valueReader is for reading BSON values.
+type valueReader struct {
+ offset int64
+ d []byte
+
+ stack []vrState
+ frame int64
+}
+
+// NewBSONDocumentReader returns a ValueReader using b for the underlying BSON
+// representation. Parameter b must be a BSON Document.
+//
+// TODO(skriptble): There's a lack of symmetry between the reader and writer, since the reader takes
+// a []byte while the writer takes an io.Writer. We should have two versions of each, one that takes
+// a []byte and one that takes an io.Reader or io.Writer. The []byte version will need to return a
+// thing that can return the finished []byte since it might be reallocated when appended to.
+func NewBSONDocumentReader(b []byte) ValueReader {
+ return newValueReader(b)
+}
+
+// NewBSONValueReader returns a ValueReader that starts in the Value mode instead of in top
+// level document mode. This enables the creation of a ValueReader for a single BSON value.
+func NewBSONValueReader(t bsontype.Type, val []byte) ValueReader {
+ stack := make([]vrState, 1, 5)
+ stack[0] = vrState{
+ mode: mValue,
+ vType: t,
+ }
+ return &valueReader{
+ d: val,
+ stack: stack,
+ }
+}
+
+func newValueReader(b []byte) *valueReader {
+ stack := make([]vrState, 1, 5)
+ stack[0] = vrState{
+ mode: mTopLevel,
+ }
+ return &valueReader{
+ d: b,
+ stack: stack,
+ }
+}
+
+func (vr *valueReader) reset(b []byte) {
+ if vr.stack == nil {
+ vr.stack = make([]vrState, 1, 5)
+ }
+ vr.stack = vr.stack[:1]
+ vr.stack[0] = vrState{mode: mTopLevel}
+ vr.d = b
+ vr.offset = 0
+ vr.frame = 0
+}
+
+func (vr *valueReader) advanceFrame() {
+ if vr.frame+1 >= int64(len(vr.stack)) { // We need to grow the stack
+ length := len(vr.stack)
+ if length+1 >= cap(vr.stack) {
+ // double it
+ buf := make([]vrState, 2*cap(vr.stack)+1)
+ copy(buf, vr.stack)
+ vr.stack = buf
+ }
+ vr.stack = vr.stack[:length+1]
+ }
+ vr.frame++
+
+ // Clean the stack
+ vr.stack[vr.frame].mode = 0
+ vr.stack[vr.frame].vType = 0
+ vr.stack[vr.frame].end = 0
+}
+
+func (vr *valueReader) pushDocument() error {
+ vr.advanceFrame()
+
+ vr.stack[vr.frame].mode = mDocument
+
+ size, err := vr.readLength()
+ if err != nil {
+ return err
+ }
+ vr.stack[vr.frame].end = int64(size) + vr.offset - 4
+
+ return nil
+}
+
+func (vr *valueReader) pushArray() error {
+ vr.advanceFrame()
+
+ vr.stack[vr.frame].mode = mArray
+
+ size, err := vr.readLength()
+ if err != nil {
+ return err
+ }
+ vr.stack[vr.frame].end = int64(size) + vr.offset - 4
+
+ return nil
+}
+
+func (vr *valueReader) pushElement(t bsontype.Type) {
+ vr.advanceFrame()
+
+ vr.stack[vr.frame].mode = mElement
+ vr.stack[vr.frame].vType = t
+}
+
+func (vr *valueReader) pushValue(t bsontype.Type) {
+ vr.advanceFrame()
+
+ vr.stack[vr.frame].mode = mValue
+ vr.stack[vr.frame].vType = t
+}
+
+func (vr *valueReader) pushCodeWithScope() (int64, error) {
+ vr.advanceFrame()
+
+ vr.stack[vr.frame].mode = mCodeWithScope
+
+ size, err := vr.readLength()
+ if err != nil {
+ return 0, err
+ }
+ vr.stack[vr.frame].end = int64(size) + vr.offset - 4
+
+ return int64(size), nil
+}
+
+func (vr *valueReader) pop() {
+ switch vr.stack[vr.frame].mode {
+ case mElement, mValue:
+ vr.frame--
+ case mDocument, mArray, mCodeWithScope:
+ vr.frame -= 2 // we pop twice to jump over the vrElement: vrDocument -> vrElement -> vrDocument/TopLevel/etc...
+ }
+}
+
+func (vr *valueReader) invalidTransitionErr(destination mode, name string, modes []mode) error {
+ te := TransitionError{
+ name: name,
+ current: vr.stack[vr.frame].mode,
+ destination: destination,
+ modes: modes,
+ action: "read",
+ }
+ if vr.frame != 0 {
+ te.parent = vr.stack[vr.frame-1].mode
+ }
+ return te
+}
+
+func (vr *valueReader) typeError(t bsontype.Type) error {
+ return fmt.Errorf("positioned on %s, but attempted to read %s", vr.stack[vr.frame].vType, t)
+}
+
+func (vr *valueReader) invalidDocumentLengthError() error {
+ return fmt.Errorf("document is invalid, end byte is at %d, but null byte found at %d", vr.stack[vr.frame].end, vr.offset)
+}
+
+func (vr *valueReader) ensureElementValue(t bsontype.Type, destination mode, callerName string) error {
+ switch vr.stack[vr.frame].mode {
+ case mElement, mValue:
+ if vr.stack[vr.frame].vType != t {
+ return vr.typeError(t)
+ }
+ default:
+ return vr.invalidTransitionErr(destination, callerName, []mode{mElement, mValue})
+ }
+
+ return nil
+}
+
+func (vr *valueReader) Type() bsontype.Type {
+ return vr.stack[vr.frame].vType
+}
+
+func (vr *valueReader) nextElementLength() (int32, error) {
+ var length int32
+ var err error
+ switch vr.stack[vr.frame].vType {
+ case bsontype.Array, bsontype.EmbeddedDocument, bsontype.CodeWithScope:
+ length, err = vr.peekLength()
+ case bsontype.Binary:
+ length, err = vr.peekLength()
+ length += 4 + 1 // binary length + subtype byte
+ case bsontype.Boolean:
+ length = 1
+ case bsontype.DBPointer:
+ length, err = vr.peekLength()
+ length += 4 + 12 // string length + ObjectID length
+ case bsontype.DateTime, bsontype.Double, bsontype.Int64, bsontype.Timestamp:
+ length = 8
+ case bsontype.Decimal128:
+ length = 16
+ case bsontype.Int32:
+ length = 4
+ case bsontype.JavaScript, bsontype.String, bsontype.Symbol:
+ length, err = vr.peekLength()
+ length += 4
+ case bsontype.MaxKey, bsontype.MinKey, bsontype.Null, bsontype.Undefined:
+ length = 0
+ case bsontype.ObjectID:
+ length = 12
+ case bsontype.Regex:
+ regex := bytes.IndexByte(vr.d[vr.offset:], 0x00)
+ if regex < 0 {
+ err = io.EOF
+ break
+ }
+ pattern := bytes.IndexByte(vr.d[regex+1:], 0x00)
+ if pattern < 0 {
+ err = io.EOF
+ break
+ }
+ length = int32(int64(regex) + 1 + int64(pattern) + 1 - vr.offset)
+ default:
+ return 0, fmt.Errorf("attempted to read bytes of unknown BSON type %v", vr.stack[vr.frame].vType)
+ }
+
+ return length, err
+}
+
+func (vr *valueReader) ReadValueBytes(dst []byte) (bsontype.Type, []byte, error) {
+ switch vr.stack[vr.frame].mode {
+ case mTopLevel:
+ length, err := vr.peekLength()
+ if err != nil {
+ return bsontype.Type(0), nil, err
+ }
+ dst, err = vr.appendBytes(dst, length)
+ if err != nil {
+ return bsontype.Type(0), nil, err
+ }
+ return bsontype.Type(0), dst, nil
+ case mElement, mValue:
+ length, err := vr.nextElementLength()
+ if err != nil {
+ return bsontype.Type(0), dst, err
+ }
+
+ dst, err = vr.appendBytes(dst, length)
+ t := vr.stack[vr.frame].vType
+ vr.pop()
+ return t, dst, err
+ default:
+ return bsontype.Type(0), nil, vr.invalidTransitionErr(0, "ReadValueBytes", []mode{mElement, mValue})
+ }
+}
+
+func (vr *valueReader) Skip() error {
+ switch vr.stack[vr.frame].mode {
+ case mElement, mValue:
+ default:
+ return vr.invalidTransitionErr(0, "Skip", []mode{mElement, mValue})
+ }
+
+ length, err := vr.nextElementLength()
+ if err != nil {
+ return err
+ }
+
+ err = vr.skipBytes(length)
+ vr.pop()
+ return err
+}
+
+func (vr *valueReader) ReadArray() (ArrayReader, error) {
+ if err := vr.ensureElementValue(bsontype.Array, mArray, "ReadArray"); err != nil {
+ return nil, err
+ }
+
+ err := vr.pushArray()
+ if err != nil {
+ return nil, err
+ }
+
+ return vr, nil
+}
+
+func (vr *valueReader) ReadBinary() (b []byte, btype byte, err error) {
+ if err := vr.ensureElementValue(bsontype.Binary, 0, "ReadBinary"); err != nil {
+ return nil, 0, err
+ }
+
+ length, err := vr.readLength()
+ if err != nil {
+ return nil, 0, err
+ }
+
+ btype, err = vr.readByte()
+ if err != nil {
+ return nil, 0, err
+ }
+
+ if btype == 0x02 {
+ length, err = vr.readLength()
+ if err != nil {
+ return nil, 0, err
+ }
+ }
+
+ b, err = vr.readBytes(length)
+ if err != nil {
+ return nil, 0, err
+ }
+
+ vr.pop()
+ return b, btype, nil
+}
+
+func (vr *valueReader) ReadBoolean() (bool, error) {
+ if err := vr.ensureElementValue(bsontype.Boolean, 0, "ReadBoolean"); err != nil {
+ return false, err
+ }
+
+ b, err := vr.readByte()
+ if err != nil {
+ return false, err
+ }
+
+ if b > 1 {
+ return false, fmt.Errorf("invalid byte for boolean, %b", b)
+ }
+
+ vr.pop()
+ return b == 1, nil
+}
+
+func (vr *valueReader) ReadDocument() (DocumentReader, error) {
+ switch vr.stack[vr.frame].mode {
+ case mTopLevel:
+ // read size
+ size, err := vr.readLength()
+ if err != nil {
+ return nil, err
+ }
+ if int(size) != len(vr.d) {
+ return nil, fmt.Errorf("invalid document length")
+ }
+ vr.stack[vr.frame].end = int64(size) + vr.offset - 4
+ return vr, nil
+ case mElement, mValue:
+ if vr.stack[vr.frame].vType != bsontype.EmbeddedDocument {
+ return nil, vr.typeError(bsontype.EmbeddedDocument)
+ }
+ default:
+ return nil, vr.invalidTransitionErr(mDocument, "ReadDocument", []mode{mTopLevel, mElement, mValue})
+ }
+
+ err := vr.pushDocument()
+ if err != nil {
+ return nil, err
+ }
+
+ return vr, nil
+}
+
+func (vr *valueReader) ReadCodeWithScope() (code string, dr DocumentReader, err error) {
+ if err := vr.ensureElementValue(bsontype.CodeWithScope, 0, "ReadCodeWithScope"); err != nil {
+ return "", nil, err
+ }
+
+ totalLength, err := vr.readLength()
+ if err != nil {
+ return "", nil, err
+ }
+ strLength, err := vr.readLength()
+ if err != nil {
+ return "", nil, err
+ }
+ strBytes, err := vr.readBytes(strLength)
+ if err != nil {
+ return "", nil, err
+ }
+ code = string(strBytes[:len(strBytes)-1])
+
+ size, err := vr.pushCodeWithScope()
+ if err != nil {
+ return "", nil, err
+ }
+
+ // The total length should equal:
+ // 4 (total length) + strLength + 4 (the length of str itself) + (document length)
+ componentsLength := int64(4+strLength+4) + size
+ if int64(totalLength) != componentsLength {
+ return "", nil, fmt.Errorf(
+ "length of CodeWithScope does not match lengths of components; total: %d; components: %d",
+ totalLength, componentsLength,
+ )
+ }
+ return code, vr, nil
+}
+
+func (vr *valueReader) ReadDBPointer() (ns string, oid primitive.ObjectID, err error) {
+ if err := vr.ensureElementValue(bsontype.DBPointer, 0, "ReadDBPointer"); err != nil {
+ return "", oid, err
+ }
+
+ ns, err = vr.readString()
+ if err != nil {
+ return "", oid, err
+ }
+
+ oidbytes, err := vr.readBytes(12)
+ if err != nil {
+ return "", oid, err
+ }
+
+ copy(oid[:], oidbytes)
+
+ vr.pop()
+ return ns, oid, nil
+}
+
+func (vr *valueReader) ReadDateTime() (int64, error) {
+ if err := vr.ensureElementValue(bsontype.DateTime, 0, "ReadDateTime"); err != nil {
+ return 0, err
+ }
+
+ i, err := vr.readi64()
+ if err != nil {
+ return 0, err
+ }
+
+ vr.pop()
+ return i, nil
+}
+
+func (vr *valueReader) ReadDecimal128() (primitive.Decimal128, error) {
+ if err := vr.ensureElementValue(bsontype.Decimal128, 0, "ReadDecimal128"); err != nil {
+ return primitive.Decimal128{}, err
+ }
+
+ b, err := vr.readBytes(16)
+ if err != nil {
+ return primitive.Decimal128{}, err
+ }
+
+ l := binary.LittleEndian.Uint64(b[0:8])
+ h := binary.LittleEndian.Uint64(b[8:16])
+
+ vr.pop()
+ return primitive.NewDecimal128(h, l), nil
+}
+
+func (vr *valueReader) ReadDouble() (float64, error) {
+ if err := vr.ensureElementValue(bsontype.Double, 0, "ReadDouble"); err != nil {
+ return 0, err
+ }
+
+ u, err := vr.readu64()
+ if err != nil {
+ return 0, err
+ }
+
+ vr.pop()
+ return math.Float64frombits(u), nil
+}
+
+func (vr *valueReader) ReadInt32() (int32, error) {
+ if err := vr.ensureElementValue(bsontype.Int32, 0, "ReadInt32"); err != nil {
+ return 0, err
+ }
+
+ vr.pop()
+ return vr.readi32()
+}
+
+func (vr *valueReader) ReadInt64() (int64, error) {
+ if err := vr.ensureElementValue(bsontype.Int64, 0, "ReadInt64"); err != nil {
+ return 0, err
+ }
+
+ vr.pop()
+ return vr.readi64()
+}
+
+func (vr *valueReader) ReadJavascript() (code string, err error) {
+ if err := vr.ensureElementValue(bsontype.JavaScript, 0, "ReadJavascript"); err != nil {
+ return "", err
+ }
+
+ vr.pop()
+ return vr.readString()
+}
+
+func (vr *valueReader) ReadMaxKey() error {
+ if err := vr.ensureElementValue(bsontype.MaxKey, 0, "ReadMaxKey"); err != nil {
+ return err
+ }
+
+ vr.pop()
+ return nil
+}
+
+func (vr *valueReader) ReadMinKey() error {
+ if err := vr.ensureElementValue(bsontype.MinKey, 0, "ReadMinKey"); err != nil {
+ return err
+ }
+
+ vr.pop()
+ return nil
+}
+
+func (vr *valueReader) ReadNull() error {
+ if err := vr.ensureElementValue(bsontype.Null, 0, "ReadNull"); err != nil {
+ return err
+ }
+
+ vr.pop()
+ return nil
+}
+
+func (vr *valueReader) ReadObjectID() (primitive.ObjectID, error) {
+ if err := vr.ensureElementValue(bsontype.ObjectID, 0, "ReadObjectID"); err != nil {
+ return primitive.ObjectID{}, err
+ }
+
+ oidbytes, err := vr.readBytes(12)
+ if err != nil {
+ return primitive.ObjectID{}, err
+ }
+
+ var oid primitive.ObjectID
+ copy(oid[:], oidbytes)
+
+ vr.pop()
+ return oid, nil
+}
+
+func (vr *valueReader) ReadRegex() (string, string, error) {
+ if err := vr.ensureElementValue(bsontype.Regex, 0, "ReadRegex"); err != nil {
+ return "", "", err
+ }
+
+ pattern, err := vr.readCString()
+ if err != nil {
+ return "", "", err
+ }
+
+ options, err := vr.readCString()
+ if err != nil {
+ return "", "", err
+ }
+
+ vr.pop()
+ return pattern, options, nil
+}
+
+func (vr *valueReader) ReadString() (string, error) {
+ if err := vr.ensureElementValue(bsontype.String, 0, "ReadString"); err != nil {
+ return "", err
+ }
+
+ vr.pop()
+ return vr.readString()
+}
+
+func (vr *valueReader) ReadSymbol() (symbol string, err error) {
+ if err := vr.ensureElementValue(bsontype.Symbol, 0, "ReadSymbol"); err != nil {
+ return "", err
+ }
+
+ vr.pop()
+ return vr.readString()
+}
+
+func (vr *valueReader) ReadTimestamp() (t uint32, i uint32, err error) {
+ if err := vr.ensureElementValue(bsontype.Timestamp, 0, "ReadTimestamp"); err != nil {
+ return 0, 0, err
+ }
+
+ i, err = vr.readu32()
+ if err != nil {
+ return 0, 0, err
+ }
+
+ t, err = vr.readu32()
+ if err != nil {
+ return 0, 0, err
+ }
+
+ vr.pop()
+ return t, i, nil
+}
+
+func (vr *valueReader) ReadUndefined() error {
+ if err := vr.ensureElementValue(bsontype.Undefined, 0, "ReadUndefined"); err != nil {
+ return err
+ }
+
+ vr.pop()
+ return nil
+}
+
+func (vr *valueReader) ReadElement() (string, ValueReader, error) {
+ switch vr.stack[vr.frame].mode {
+ case mTopLevel, mDocument, mCodeWithScope:
+ default:
+ return "", nil, vr.invalidTransitionErr(mElement, "ReadElement", []mode{mTopLevel, mDocument, mCodeWithScope})
+ }
+
+ t, err := vr.readByte()
+ if err != nil {
+ return "", nil, err
+ }
+
+ if t == 0 {
+ if vr.offset != vr.stack[vr.frame].end {
+ return "", nil, vr.invalidDocumentLengthError()
+ }
+
+ vr.pop()
+ return "", nil, ErrEOD
+ }
+
+ name, err := vr.readCString()
+ if err != nil {
+ return "", nil, err
+ }
+
+ vr.pushElement(bsontype.Type(t))
+ return name, vr, nil
+}
+
+func (vr *valueReader) ReadValue() (ValueReader, error) {
+ switch vr.stack[vr.frame].mode {
+ case mArray:
+ default:
+ return nil, vr.invalidTransitionErr(mValue, "ReadValue", []mode{mArray})
+ }
+
+ t, err := vr.readByte()
+ if err != nil {
+ return nil, err
+ }
+
+ if t == 0 {
+ if vr.offset != vr.stack[vr.frame].end {
+ return nil, vr.invalidDocumentLengthError()
+ }
+
+ vr.pop()
+ return nil, ErrEOA
+ }
+
+ _, err = vr.readCString()
+ if err != nil {
+ return nil, err
+ }
+
+ vr.pushValue(bsontype.Type(t))
+ return vr, nil
+}
+
+func (vr *valueReader) readBytes(length int32) ([]byte, error) {
+ if length < 0 {
+ return nil, fmt.Errorf("invalid length: %d", length)
+ }
+
+ if vr.offset+int64(length) > int64(len(vr.d)) {
+ return nil, io.EOF
+ }
+
+ start := vr.offset
+ vr.offset += int64(length)
+ return vr.d[start : start+int64(length)], nil
+}
+
+func (vr *valueReader) appendBytes(dst []byte, length int32) ([]byte, error) {
+ if vr.offset+int64(length) > int64(len(vr.d)) {
+ return nil, io.EOF
+ }
+
+ start := vr.offset
+ vr.offset += int64(length)
+ return append(dst, vr.d[start:start+int64(length)]...), nil
+}
+
+func (vr *valueReader) skipBytes(length int32) error {
+ if vr.offset+int64(length) > int64(len(vr.d)) {
+ return io.EOF
+ }
+
+ vr.offset += int64(length)
+ return nil
+}
+
+func (vr *valueReader) readByte() (byte, error) {
+ if vr.offset+1 > int64(len(vr.d)) {
+ return 0x0, io.EOF
+ }
+
+ vr.offset++
+ return vr.d[vr.offset-1], nil
+}
+
+func (vr *valueReader) readCString() (string, error) {
+ idx := bytes.IndexByte(vr.d[vr.offset:], 0x00)
+ if idx < 0 {
+ return "", io.EOF
+ }
+ start := vr.offset
+ // idx does not include the null byte
+ vr.offset += int64(idx) + 1
+ return string(vr.d[start : start+int64(idx)]), nil
+}
+
+func (vr *valueReader) skipCString() error {
+ idx := bytes.IndexByte(vr.d[vr.offset:], 0x00)
+ if idx < 0 {
+ return io.EOF
+ }
+ // idx does not include the null byte
+ vr.offset += int64(idx) + 1
+ return nil
+}
+
+func (vr *valueReader) readString() (string, error) {
+ length, err := vr.readLength()
+ if err != nil {
+ return "", err
+ }
+
+ if int64(length)+vr.offset > int64(len(vr.d)) {
+ return "", io.EOF
+ }
+
+ if length <= 0 {
+ return "", fmt.Errorf("invalid string length: %d", length)
+ }
+
+ if vr.d[vr.offset+int64(length)-1] != 0x00 {
+ return "", fmt.Errorf("string does not end with null byte, but with %v", vr.d[vr.offset+int64(length)-1])
+ }
+
+ start := vr.offset
+ vr.offset += int64(length)
+
+ if length == 2 {
+ asciiByte := vr.d[start]
+ if asciiByte > unicode.MaxASCII {
+ return "", fmt.Errorf("invalid ascii byte")
+ }
+ }
+
+ return string(vr.d[start : start+int64(length)-1]), nil
+}
+
+func (vr *valueReader) peekLength() (int32, error) {
+ if vr.offset+4 > int64(len(vr.d)) {
+ return 0, io.EOF
+ }
+
+ idx := vr.offset
+ return (int32(vr.d[idx]) | int32(vr.d[idx+1])<<8 | int32(vr.d[idx+2])<<16 | int32(vr.d[idx+3])<<24), nil
+}
+
+func (vr *valueReader) readLength() (int32, error) { return vr.readi32() }
+
+func (vr *valueReader) readi32() (int32, error) {
+ if vr.offset+4 > int64(len(vr.d)) {
+ return 0, io.EOF
+ }
+
+ idx := vr.offset
+ vr.offset += 4
+ return (int32(vr.d[idx]) | int32(vr.d[idx+1])<<8 | int32(vr.d[idx+2])<<16 | int32(vr.d[idx+3])<<24), nil
+}
+
+func (vr *valueReader) readu32() (uint32, error) {
+ if vr.offset+4 > int64(len(vr.d)) {
+ return 0, io.EOF
+ }
+
+ idx := vr.offset
+ vr.offset += 4
+ return (uint32(vr.d[idx]) | uint32(vr.d[idx+1])<<8 | uint32(vr.d[idx+2])<<16 | uint32(vr.d[idx+3])<<24), nil
+}
+
+func (vr *valueReader) readi64() (int64, error) {
+ if vr.offset+8 > int64(len(vr.d)) {
+ return 0, io.EOF
+ }
+
+ idx := vr.offset
+ vr.offset += 8
+ return int64(vr.d[idx]) | int64(vr.d[idx+1])<<8 | int64(vr.d[idx+2])<<16 | int64(vr.d[idx+3])<<24 |
+ int64(vr.d[idx+4])<<32 | int64(vr.d[idx+5])<<40 | int64(vr.d[idx+6])<<48 | int64(vr.d[idx+7])<<56, nil
+}
+
+func (vr *valueReader) readu64() (uint64, error) {
+ if vr.offset+8 > int64(len(vr.d)) {
+ return 0, io.EOF
+ }
+
+ idx := vr.offset
+ vr.offset += 8
+ return uint64(vr.d[idx]) | uint64(vr.d[idx+1])<<8 | uint64(vr.d[idx+2])<<16 | uint64(vr.d[idx+3])<<24 |
+ uint64(vr.d[idx+4])<<32 | uint64(vr.d[idx+5])<<40 | uint64(vr.d[idx+6])<<48 | uint64(vr.d[idx+7])<<56, nil
+}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/value_writer.go b/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/value_writer.go
new file mode 100644
index 0000000..2400bac
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/value_writer.go
@@ -0,0 +1,589 @@
+// 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 (
+ "errors"
+ "fmt"
+ "io"
+ "math"
+ "strconv"
+ "sync"
+
+ "github.com/mongodb/mongo-go-driver/bson/bsontype"
+ "github.com/mongodb/mongo-go-driver/bson/primitive"
+ "github.com/mongodb/mongo-go-driver/x/bsonx/bsoncore"
+)
+
+var _ ValueWriter = (*valueWriter)(nil)
+
+var vwPool = sync.Pool{
+ New: func() interface{} {
+ return new(valueWriter)
+ },
+}
+
+// BSONValueWriterPool is a pool for BSON ValueWriters.
+type BSONValueWriterPool struct {
+ pool sync.Pool
+}
+
+// NewBSONValueWriterPool creates a new pool for ValueWriter instances that write to BSON.
+func NewBSONValueWriterPool() *BSONValueWriterPool {
+ return &BSONValueWriterPool{
+ pool: sync.Pool{
+ New: func() interface{} {
+ return new(valueWriter)
+ },
+ },
+ }
+}
+
+// Get retrieves a BSON ValueWriter from the pool and resets it to use w as the destination.
+func (bvwp *BSONValueWriterPool) Get(w io.Writer) ValueWriter {
+ vw := bvwp.pool.Get().(*valueWriter)
+ if writer, ok := w.(*SliceWriter); ok {
+ vw.reset(*writer)
+ vw.w = writer
+ return vw
+ }
+ vw.buf = vw.buf[:0]
+ vw.w = w
+ return vw
+}
+
+// Put inserts a ValueWriter into the pool. If the ValueWriter is not a BSON ValueWriter, nothing
+// happens and ok will be false.
+func (bvwp *BSONValueWriterPool) Put(vw ValueWriter) (ok bool) {
+ bvw, ok := vw.(*valueWriter)
+ if !ok {
+ return false
+ }
+
+ if _, ok := bvw.w.(*SliceWriter); ok {
+ bvw.buf = nil
+ }
+ bvw.w = nil
+
+ bvwp.pool.Put(bvw)
+ return true
+}
+
+// This is here so that during testing we can change it and not require
+// allocating a 4GB slice.
+var maxSize = math.MaxInt32
+
+var errNilWriter = errors.New("cannot create a ValueWriter from a nil io.Writer")
+
+type errMaxDocumentSizeExceeded struct {
+ size int64
+}
+
+func (mdse errMaxDocumentSizeExceeded) Error() string {
+ return fmt.Sprintf("document size (%d) is larger than the max int32", mdse.size)
+}
+
+type vwMode int
+
+const (
+ _ vwMode = iota
+ vwTopLevel
+ vwDocument
+ vwArray
+ vwValue
+ vwElement
+ vwCodeWithScope
+)
+
+func (vm vwMode) String() string {
+ var str string
+
+ switch vm {
+ case vwTopLevel:
+ str = "TopLevel"
+ case vwDocument:
+ str = "DocumentMode"
+ case vwArray:
+ str = "ArrayMode"
+ case vwValue:
+ str = "ValueMode"
+ case vwElement:
+ str = "ElementMode"
+ case vwCodeWithScope:
+ str = "CodeWithScopeMode"
+ default:
+ str = "UnknownMode"
+ }
+
+ return str
+}
+
+type vwState struct {
+ mode mode
+ key string
+ arrkey int
+ start int32
+}
+
+type valueWriter struct {
+ w io.Writer
+ buf []byte
+
+ stack []vwState
+ frame int64
+}
+
+func (vw *valueWriter) advanceFrame() {
+ if vw.frame+1 >= int64(len(vw.stack)) { // We need to grow the stack
+ length := len(vw.stack)
+ if length+1 >= cap(vw.stack) {
+ // double it
+ buf := make([]vwState, 2*cap(vw.stack)+1)
+ copy(buf, vw.stack)
+ vw.stack = buf
+ }
+ vw.stack = vw.stack[:length+1]
+ }
+ vw.frame++
+}
+
+func (vw *valueWriter) push(m mode) {
+ vw.advanceFrame()
+
+ // Clean the stack
+ vw.stack[vw.frame].mode = m
+ vw.stack[vw.frame].key = ""
+ vw.stack[vw.frame].arrkey = 0
+ vw.stack[vw.frame].start = 0
+
+ vw.stack[vw.frame].mode = m
+ switch m {
+ case mDocument, mArray, mCodeWithScope:
+ vw.reserveLength()
+ }
+}
+
+func (vw *valueWriter) reserveLength() {
+ vw.stack[vw.frame].start = int32(len(vw.buf))
+ vw.buf = append(vw.buf, 0x00, 0x00, 0x00, 0x00)
+}
+
+func (vw *valueWriter) pop() {
+ switch vw.stack[vw.frame].mode {
+ case mElement, mValue:
+ vw.frame--
+ case mDocument, mArray, mCodeWithScope:
+ vw.frame -= 2 // we pop twice to jump over the mElement: mDocument -> mElement -> mDocument/mTopLevel/etc...
+ }
+}
+
+// NewBSONValueWriter creates a ValueWriter that writes BSON to w.
+//
+// This ValueWriter will only write entire documents to the io.Writer and it
+// will buffer the document as it is built.
+func NewBSONValueWriter(w io.Writer) (ValueWriter, error) {
+ if w == nil {
+ return nil, errNilWriter
+ }
+ return newValueWriter(w), nil
+}
+
+func newValueWriter(w io.Writer) *valueWriter {
+ vw := new(valueWriter)
+ stack := make([]vwState, 1, 5)
+ stack[0] = vwState{mode: mTopLevel}
+ vw.w = w
+ vw.stack = stack
+
+ return vw
+}
+
+func newValueWriterFromSlice(buf []byte) *valueWriter {
+ vw := new(valueWriter)
+ stack := make([]vwState, 1, 5)
+ stack[0] = vwState{mode: mTopLevel}
+ vw.stack = stack
+ vw.buf = buf
+
+ return vw
+}
+
+func (vw *valueWriter) reset(buf []byte) {
+ if vw.stack == nil {
+ vw.stack = make([]vwState, 1, 5)
+ }
+ vw.stack = vw.stack[:1]
+ vw.stack[0] = vwState{mode: mTopLevel}
+ vw.buf = buf
+ vw.frame = 0
+ vw.w = nil
+}
+
+func (vw *valueWriter) invalidTransitionError(destination mode, name string, modes []mode) error {
+ te := TransitionError{
+ name: name,
+ current: vw.stack[vw.frame].mode,
+ destination: destination,
+ modes: modes,
+ action: "write",
+ }
+ if vw.frame != 0 {
+ te.parent = vw.stack[vw.frame-1].mode
+ }
+ return te
+}
+
+func (vw *valueWriter) writeElementHeader(t bsontype.Type, destination mode, callerName string, addmodes ...mode) error {
+ switch vw.stack[vw.frame].mode {
+ case mElement:
+ vw.buf = bsoncore.AppendHeader(vw.buf, t, vw.stack[vw.frame].key)
+ case mValue:
+ // TODO: Do this with a cache of the first 1000 or so array keys.
+ vw.buf = bsoncore.AppendHeader(vw.buf, t, strconv.Itoa(vw.stack[vw.frame].arrkey))
+ default:
+ modes := []mode{mElement, mValue}
+ if addmodes != nil {
+ modes = append(modes, addmodes...)
+ }
+ return vw.invalidTransitionError(destination, callerName, modes)
+ }
+
+ return nil
+}
+
+func (vw *valueWriter) WriteValueBytes(t bsontype.Type, b []byte) error {
+ if err := vw.writeElementHeader(t, mode(0), "WriteValueBytes"); err != nil {
+ return err
+ }
+ vw.buf = append(vw.buf, b...)
+ vw.pop()
+ return nil
+}
+
+func (vw *valueWriter) WriteArray() (ArrayWriter, error) {
+ if err := vw.writeElementHeader(bsontype.Array, mArray, "WriteArray"); err != nil {
+ return nil, err
+ }
+
+ vw.push(mArray)
+
+ return vw, nil
+}
+
+func (vw *valueWriter) WriteBinary(b []byte) error {
+ return vw.WriteBinaryWithSubtype(b, 0x00)
+}
+
+func (vw *valueWriter) WriteBinaryWithSubtype(b []byte, btype byte) error {
+ if err := vw.writeElementHeader(bsontype.Binary, mode(0), "WriteBinaryWithSubtype"); err != nil {
+ return err
+ }
+
+ vw.buf = bsoncore.AppendBinary(vw.buf, btype, b)
+ vw.pop()
+ return nil
+}
+
+func (vw *valueWriter) WriteBoolean(b bool) error {
+ if err := vw.writeElementHeader(bsontype.Boolean, mode(0), "WriteBoolean"); err != nil {
+ return err
+ }
+
+ vw.buf = bsoncore.AppendBoolean(vw.buf, b)
+ vw.pop()
+ return nil
+}
+
+func (vw *valueWriter) WriteCodeWithScope(code string) (DocumentWriter, error) {
+ if err := vw.writeElementHeader(bsontype.CodeWithScope, mCodeWithScope, "WriteCodeWithScope"); err != nil {
+ return nil, err
+ }
+
+ // CodeWithScope is a different than other types because we need an extra
+ // frame on the stack. In the EndDocument code, we write the document
+ // length, pop, write the code with scope length, and pop. To simplify the
+ // pop code, we push a spacer frame that we'll always jump over.
+ vw.push(mCodeWithScope)
+ vw.buf = bsoncore.AppendString(vw.buf, code)
+ vw.push(mSpacer)
+ vw.push(mDocument)
+
+ return vw, nil
+}
+
+func (vw *valueWriter) WriteDBPointer(ns string, oid primitive.ObjectID) error {
+ if err := vw.writeElementHeader(bsontype.DBPointer, mode(0), "WriteDBPointer"); err != nil {
+ return err
+ }
+
+ vw.buf = bsoncore.AppendDBPointer(vw.buf, ns, oid)
+ vw.pop()
+ return nil
+}
+
+func (vw *valueWriter) WriteDateTime(dt int64) error {
+ if err := vw.writeElementHeader(bsontype.DateTime, mode(0), "WriteDateTime"); err != nil {
+ return err
+ }
+
+ vw.buf = bsoncore.AppendDateTime(vw.buf, dt)
+ vw.pop()
+ return nil
+}
+
+func (vw *valueWriter) WriteDecimal128(d128 primitive.Decimal128) error {
+ if err := vw.writeElementHeader(bsontype.Decimal128, mode(0), "WriteDecimal128"); err != nil {
+ return err
+ }
+
+ vw.buf = bsoncore.AppendDecimal128(vw.buf, d128)
+ vw.pop()
+ return nil
+}
+
+func (vw *valueWriter) WriteDouble(f float64) error {
+ if err := vw.writeElementHeader(bsontype.Double, mode(0), "WriteDouble"); err != nil {
+ return err
+ }
+
+ vw.buf = bsoncore.AppendDouble(vw.buf, f)
+ vw.pop()
+ return nil
+}
+
+func (vw *valueWriter) WriteInt32(i32 int32) error {
+ if err := vw.writeElementHeader(bsontype.Int32, mode(0), "WriteInt32"); err != nil {
+ return err
+ }
+
+ vw.buf = bsoncore.AppendInt32(vw.buf, i32)
+ vw.pop()
+ return nil
+}
+
+func (vw *valueWriter) WriteInt64(i64 int64) error {
+ if err := vw.writeElementHeader(bsontype.Int64, mode(0), "WriteInt64"); err != nil {
+ return err
+ }
+
+ vw.buf = bsoncore.AppendInt64(vw.buf, i64)
+ vw.pop()
+ return nil
+}
+
+func (vw *valueWriter) WriteJavascript(code string) error {
+ if err := vw.writeElementHeader(bsontype.JavaScript, mode(0), "WriteJavascript"); err != nil {
+ return err
+ }
+
+ vw.buf = bsoncore.AppendJavaScript(vw.buf, code)
+ vw.pop()
+ return nil
+}
+
+func (vw *valueWriter) WriteMaxKey() error {
+ if err := vw.writeElementHeader(bsontype.MaxKey, mode(0), "WriteMaxKey"); err != nil {
+ return err
+ }
+
+ vw.pop()
+ return nil
+}
+
+func (vw *valueWriter) WriteMinKey() error {
+ if err := vw.writeElementHeader(bsontype.MinKey, mode(0), "WriteMinKey"); err != nil {
+ return err
+ }
+
+ vw.pop()
+ return nil
+}
+
+func (vw *valueWriter) WriteNull() error {
+ if err := vw.writeElementHeader(bsontype.Null, mode(0), "WriteNull"); err != nil {
+ return err
+ }
+
+ vw.pop()
+ return nil
+}
+
+func (vw *valueWriter) WriteObjectID(oid primitive.ObjectID) error {
+ if err := vw.writeElementHeader(bsontype.ObjectID, mode(0), "WriteObjectID"); err != nil {
+ return err
+ }
+
+ vw.buf = bsoncore.AppendObjectID(vw.buf, oid)
+ vw.pop()
+ return nil
+}
+
+func (vw *valueWriter) WriteRegex(pattern string, options string) error {
+ if err := vw.writeElementHeader(bsontype.Regex, mode(0), "WriteRegex"); err != nil {
+ return err
+ }
+
+ vw.buf = bsoncore.AppendRegex(vw.buf, pattern, sortStringAlphebeticAscending(options))
+ vw.pop()
+ return nil
+}
+
+func (vw *valueWriter) WriteString(s string) error {
+ if err := vw.writeElementHeader(bsontype.String, mode(0), "WriteString"); err != nil {
+ return err
+ }
+
+ vw.buf = bsoncore.AppendString(vw.buf, s)
+ vw.pop()
+ return nil
+}
+
+func (vw *valueWriter) WriteDocument() (DocumentWriter, error) {
+ if vw.stack[vw.frame].mode == mTopLevel {
+ vw.reserveLength()
+ return vw, nil
+ }
+ if err := vw.writeElementHeader(bsontype.EmbeddedDocument, mDocument, "WriteDocument", mTopLevel); err != nil {
+ return nil, err
+ }
+
+ vw.push(mDocument)
+ return vw, nil
+}
+
+func (vw *valueWriter) WriteSymbol(symbol string) error {
+ if err := vw.writeElementHeader(bsontype.Symbol, mode(0), "WriteSymbol"); err != nil {
+ return err
+ }
+
+ vw.buf = bsoncore.AppendSymbol(vw.buf, symbol)
+ vw.pop()
+ return nil
+}
+
+func (vw *valueWriter) WriteTimestamp(t uint32, i uint32) error {
+ if err := vw.writeElementHeader(bsontype.Timestamp, mode(0), "WriteTimestamp"); err != nil {
+ return err
+ }
+
+ vw.buf = bsoncore.AppendTimestamp(vw.buf, t, i)
+ vw.pop()
+ return nil
+}
+
+func (vw *valueWriter) WriteUndefined() error {
+ if err := vw.writeElementHeader(bsontype.Undefined, mode(0), "WriteUndefined"); err != nil {
+ return err
+ }
+
+ vw.pop()
+ return nil
+}
+
+func (vw *valueWriter) WriteDocumentElement(key string) (ValueWriter, error) {
+ switch vw.stack[vw.frame].mode {
+ case mTopLevel, mDocument:
+ default:
+ return nil, vw.invalidTransitionError(mElement, "WriteDocumentElement", []mode{mTopLevel, mDocument})
+ }
+
+ vw.push(mElement)
+ vw.stack[vw.frame].key = key
+
+ return vw, nil
+}
+
+func (vw *valueWriter) WriteDocumentEnd() error {
+ switch vw.stack[vw.frame].mode {
+ case mTopLevel, mDocument:
+ default:
+ return fmt.Errorf("incorrect mode to end document: %s", vw.stack[vw.frame].mode)
+ }
+
+ vw.buf = append(vw.buf, 0x00)
+
+ err := vw.writeLength()
+ if err != nil {
+ return err
+ }
+
+ if vw.stack[vw.frame].mode == mTopLevel {
+ if vw.w != nil {
+ if sw, ok := vw.w.(*SliceWriter); ok {
+ *sw = vw.buf
+ } else {
+ _, err = vw.w.Write(vw.buf)
+ if err != nil {
+ return err
+ }
+ // reset buffer
+ vw.buf = vw.buf[:0]
+ }
+ }
+ }
+
+ vw.pop()
+
+ if vw.stack[vw.frame].mode == mCodeWithScope {
+ // We ignore the error here because of the gaurantee of writeLength.
+ // See the docs for writeLength for more info.
+ _ = vw.writeLength()
+ vw.pop()
+ }
+ return nil
+}
+
+func (vw *valueWriter) WriteArrayElement() (ValueWriter, error) {
+ if vw.stack[vw.frame].mode != mArray {
+ return nil, vw.invalidTransitionError(mValue, "WriteArrayElement", []mode{mArray})
+ }
+
+ arrkey := vw.stack[vw.frame].arrkey
+ vw.stack[vw.frame].arrkey++
+
+ vw.push(mValue)
+ vw.stack[vw.frame].arrkey = arrkey
+
+ return vw, nil
+}
+
+func (vw *valueWriter) WriteArrayEnd() error {
+ if vw.stack[vw.frame].mode != mArray {
+ return fmt.Errorf("incorrect mode to end array: %s", vw.stack[vw.frame].mode)
+ }
+
+ vw.buf = append(vw.buf, 0x00)
+
+ err := vw.writeLength()
+ if err != nil {
+ return err
+ }
+
+ vw.pop()
+ return nil
+}
+
+// NOTE: We assume that if we call writeLength more than once the same function
+// within the same function without altering the vw.buf that this method will
+// not return an error. If this changes ensure that the following methods are
+// updated:
+//
+// - WriteDocumentEnd
+func (vw *valueWriter) writeLength() error {
+ length := len(vw.buf)
+ if length > maxSize {
+ return errMaxDocumentSizeExceeded{size: int64(len(vw.buf))}
+ }
+ length = length - int(vw.stack[vw.frame].start)
+ start := vw.stack[vw.frame].start
+
+ vw.buf[start+0] = byte(length)
+ vw.buf[start+1] = byte(length >> 8)
+ vw.buf[start+2] = byte(length >> 16)
+ vw.buf[start+3] = byte(length >> 24)
+ return nil
+}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/writer.go b/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/writer.go
new file mode 100644
index 0000000..6ae4322
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/bsonrw/writer.go
@@ -0,0 +1,96 @@
+// 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 (
+ "github.com/mongodb/mongo-go-driver/bson/bsontype"
+ "github.com/mongodb/mongo-go-driver/bson/primitive"
+)
+
+// ArrayWriter is the interface used to create a BSON or BSON adjacent array.
+// Callers must ensure they call WriteArrayEnd when they have finished creating
+// the array.
+type ArrayWriter interface {
+ WriteArrayElement() (ValueWriter, error)
+ WriteArrayEnd() error
+}
+
+// DocumentWriter is the interface used to create a BSON or BSON adjacent
+// document. Callers must ensure they call WriteDocumentEnd when they have
+// finished creating the document.
+type DocumentWriter interface {
+ WriteDocumentElement(string) (ValueWriter, error)
+ WriteDocumentEnd() error
+}
+
+// ValueWriter is the interface used to write BSON values. Implementations of
+// this interface handle creating BSON or BSON adjacent representations of the
+// values.
+type ValueWriter interface {
+ WriteArray() (ArrayWriter, error)
+ WriteBinary(b []byte) error
+ WriteBinaryWithSubtype(b []byte, btype byte) error
+ WriteBoolean(bool) error
+ WriteCodeWithScope(code string) (DocumentWriter, error)
+ WriteDBPointer(ns string, oid primitive.ObjectID) error
+ WriteDateTime(dt int64) error
+ WriteDecimal128(primitive.Decimal128) error
+ WriteDouble(float64) error
+ WriteInt32(int32) error
+ WriteInt64(int64) error
+ WriteJavascript(code string) error
+ WriteMaxKey() error
+ WriteMinKey() error
+ WriteNull() error
+ WriteObjectID(primitive.ObjectID) error
+ WriteRegex(pattern, options string) error
+ WriteString(string) error
+ WriteDocument() (DocumentWriter, error)
+ WriteSymbol(symbol string) error
+ WriteTimestamp(t, i uint32) error
+ WriteUndefined() error
+}
+
+// BytesWriter is the interface used to write BSON bytes to a ValueWriter.
+// This interface is meant to be a superset of ValueWriter, so that types that
+// implement ValueWriter may also implement this interface.
+type BytesWriter interface {
+ WriteValueBytes(t bsontype.Type, b []byte) error
+}
+
+// SliceWriter allows a pointer to a slice of bytes to be used as an io.Writer.
+type SliceWriter []byte
+
+func (sw *SliceWriter) Write(p []byte) (int, error) {
+ written := len(p)
+ *sw = append(*sw, p...)
+ return written, nil
+}
+
+type writer []byte
+
+func (w *writer) Write(p []byte) (int, error) {
+ index := len(*w)
+ return w.WriteAt(p, int64(index))
+}
+
+func (w *writer) WriteAt(p []byte, off int64) (int, error) {
+ newend := off + int64(len(p))
+ if newend < int64(len(*w)) {
+ newend = int64(len(*w))
+ }
+
+ if newend > int64(cap(*w)) {
+ buf := make([]byte, int64(2*cap(*w))+newend)
+ copy(buf, *w)
+ *w = buf
+ }
+
+ *w = []byte(*w)[:newend]
+ copy([]byte(*w)[off:], p)
+ return len(p), nil
+}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/bsontype/bsontype.go b/vendor/github.com/mongodb/mongo-go-driver/bson/bsontype/bsontype.go
new file mode 100644
index 0000000..a17e5f5
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/bsontype/bsontype.go
@@ -0,0 +1,87 @@
+// 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 bsontype is a utility package that contains types for each BSON type and the
+// a stringifier for the Type to enable easier debugging when working with BSON.
+package bsontype
+
+// These constants uniquely refer to each BSON type.
+const (
+ Double Type = 0x01
+ String Type = 0x02
+ EmbeddedDocument Type = 0x03
+ Array Type = 0x04
+ Binary Type = 0x05
+ Undefined Type = 0x06
+ ObjectID Type = 0x07
+ Boolean Type = 0x08
+ DateTime Type = 0x09
+ Null Type = 0x0A
+ Regex Type = 0x0B
+ DBPointer Type = 0x0C
+ JavaScript Type = 0x0D
+ Symbol Type = 0x0E
+ CodeWithScope Type = 0x0F
+ Int32 Type = 0x10
+ Timestamp Type = 0x11
+ Int64 Type = 0x12
+ Decimal128 Type = 0x13
+ MinKey Type = 0xFF
+ MaxKey Type = 0x7F
+)
+
+// Type represents a BSON type.
+type Type byte
+
+// String returns the string representation of the BSON type's name.
+func (bt Type) String() string {
+ switch bt {
+ case '\x01':
+ return "double"
+ case '\x02':
+ return "string"
+ case '\x03':
+ return "embedded document"
+ case '\x04':
+ return "array"
+ case '\x05':
+ return "binary"
+ case '\x06':
+ return "undefined"
+ case '\x07':
+ return "objectID"
+ case '\x08':
+ return "boolean"
+ case '\x09':
+ return "UTC datetime"
+ case '\x0A':
+ return "null"
+ case '\x0B':
+ return "regex"
+ case '\x0C':
+ return "dbPointer"
+ case '\x0D':
+ return "javascript"
+ case '\x0E':
+ return "symbol"
+ case '\x0F':
+ return "code with scope"
+ case '\x10':
+ return "32-bit integer"
+ case '\x11':
+ return "timestamp"
+ case '\x12':
+ return "64-bit integer"
+ case '\x13':
+ return "128-bit decimal"
+ case '\xFF':
+ return "min key"
+ case '\x7F':
+ return "max key"
+ default:
+ return "invalid"
+ }
+}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/decoder.go b/vendor/github.com/mongodb/mongo-go-driver/bson/decoder.go
new file mode 100644
index 0000000..03c86a1
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/decoder.go
@@ -0,0 +1,106 @@
+// 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 bson
+
+import (
+ "errors"
+ "fmt"
+ "reflect"
+ "sync"
+
+ "github.com/mongodb/mongo-go-driver/bson/bsoncodec"
+ "github.com/mongodb/mongo-go-driver/bson/bsonrw"
+)
+
+// This pool is used to keep the allocations of Decoders down. This is only used for the Marshal*
+// methods and is not consumable from outside of this package. The Decoders retrieved from this pool
+// must have both Reset and SetRegistry called on them.
+var decPool = sync.Pool{
+ New: func() interface{} {
+ return new(Decoder)
+ },
+}
+
+// A Decoder reads and decodes BSON documents from a stream. It reads from a bsonrw.ValueReader as
+// the source of BSON data.
+type Decoder struct {
+ dc bsoncodec.DecodeContext
+ vr bsonrw.ValueReader
+}
+
+// NewDecoder returns a new decoder that uses the DefaultRegistry to read from vr.
+func NewDecoder(vr bsonrw.ValueReader) (*Decoder, error) {
+ if vr == nil {
+ return nil, errors.New("cannot create a new Decoder with a nil ValueReader")
+ }
+
+ return &Decoder{
+ dc: bsoncodec.DecodeContext{Registry: DefaultRegistry},
+ vr: vr,
+ }, nil
+}
+
+// NewDecoderWithContext returns a new decoder that uses DecodeContext dc to read from vr.
+func NewDecoderWithContext(dc bsoncodec.DecodeContext, vr bsonrw.ValueReader) (*Decoder, error) {
+ if dc.Registry == nil {
+ dc.Registry = DefaultRegistry
+ }
+ if vr == nil {
+ return nil, errors.New("cannot create a new Decoder with a nil ValueReader")
+ }
+
+ return &Decoder{
+ dc: dc,
+ vr: vr,
+ }, nil
+}
+
+// Decode reads the next BSON document from the stream and decodes it into the
+// value pointed to by val.
+//
+// The documentation for Unmarshal contains details about of BSON into a Go
+// value.
+func (d *Decoder) Decode(val interface{}) error {
+ if unmarshaler, ok := val.(Unmarshaler); ok {
+ // TODO(skriptble): Reuse a []byte here and use the AppendDocumentBytes method.
+ buf, err := bsonrw.Copier{}.CopyDocumentToBytes(d.vr)
+ if err != nil {
+ return err
+ }
+ return unmarshaler.UnmarshalBSON(buf)
+ }
+
+ rval := reflect.ValueOf(val)
+ if rval.Kind() != reflect.Ptr {
+ return fmt.Errorf("argument to Decode must be a pointer to a type, but got %v", rval)
+ }
+ rval = rval.Elem()
+ decoder, err := d.dc.LookupDecoder(rval.Type())
+ if err != nil {
+ return err
+ }
+ return decoder.DecodeValue(d.dc, d.vr, rval)
+}
+
+// Reset will reset the state of the decoder, using the same *DecodeContext used in
+// the original construction but using vr for reading.
+func (d *Decoder) Reset(vr bsonrw.ValueReader) error {
+ d.vr = vr
+ return nil
+}
+
+// SetRegistry replaces the current registry of the decoder with r.
+func (d *Decoder) SetRegistry(r *bsoncodec.Registry) error {
+ d.dc.Registry = r
+ return nil
+}
+
+// SetContext replaces the current registry of the decoder with dc.
+func (d *Decoder) SetContext(dc bsoncodec.DecodeContext) error {
+ d.dc = dc
+ return nil
+}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/doc.go b/vendor/github.com/mongodb/mongo-go-driver/bson/doc.go
new file mode 100644
index 0000000..b3f6c52
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/doc.go
@@ -0,0 +1,42 @@
+// 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 bson is a library for reading, writing, and manipulating BSON. The
+// library has two families of types for representing BSON.
+//
+// The Raw family of types is used to validate and retrieve elements from a slice of bytes. This
+// type is most useful when you want do lookups on BSON bytes without unmarshaling it into another
+// type.
+//
+// Example:
+// var raw bson.Raw = ... // bytes from somewhere
+// err := raw.Validate()
+// if err != nil { return err }
+// val := raw.Lookup("foo")
+// i32, ok := val.Int32OK()
+// // do something with i32...
+//
+// The D family of types is used to build concise representations of BSON using native Go types.
+// These types do not support automatic lookup.
+//
+// Example:
+// bson.D{{"foo", "bar"}, {"hello", "world"}, {"pi", 3.14159}}
+//
+//
+// Marshaling and Unmarshaling are handled with the Marshal and Unmarshal family of functions. If
+// you need to write or read BSON from a non-slice source, an Encoder or Decoder can be used with a
+// bsonrw.ValueWriter or bsonrw.ValueReader.
+//
+// Example:
+// b, err := bson.Marshal(bson.D{{"foo", "bar"}})
+// if err != nil { return err }
+// var fooer struct {
+// Foo string
+// }
+// err = bson.Unmarshal(b, &fooer)
+// if err != nil { return err }
+// // do something with fooer...
+package bson
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/encoder.go b/vendor/github.com/mongodb/mongo-go-driver/bson/encoder.go
new file mode 100644
index 0000000..3c40425
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/encoder.go
@@ -0,0 +1,99 @@
+// 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 bson
+
+import (
+ "errors"
+ "reflect"
+ "sync"
+
+ "github.com/mongodb/mongo-go-driver/bson/bsoncodec"
+ "github.com/mongodb/mongo-go-driver/bson/bsonrw"
+)
+
+// This pool is used to keep the allocations of Encoders down. This is only used for the Marshal*
+// methods and is not consumable from outside of this package. The Encoders retrieved from this pool
+// must have both Reset and SetRegistry called on them.
+var encPool = sync.Pool{
+ New: func() interface{} {
+ return new(Encoder)
+ },
+}
+
+// An Encoder writes a serialization format to an output stream. It writes to a bsonrw.ValueWriter
+// as the destination of BSON data.
+type Encoder struct {
+ ec bsoncodec.EncodeContext
+ vw bsonrw.ValueWriter
+}
+
+// NewEncoder returns a new encoder that uses the DefaultRegistry to write to vw.
+func NewEncoder(vw bsonrw.ValueWriter) (*Encoder, error) {
+ if vw == nil {
+ return nil, errors.New("cannot create a new Encoder with a nil ValueWriter")
+ }
+
+ return &Encoder{
+ ec: bsoncodec.EncodeContext{Registry: DefaultRegistry},
+ vw: vw,
+ }, nil
+}
+
+// NewEncoderWithContext returns a new encoder that uses EncodeContext ec to write to vw.
+func NewEncoderWithContext(ec bsoncodec.EncodeContext, vw bsonrw.ValueWriter) (*Encoder, error) {
+ if ec.Registry == nil {
+ ec = bsoncodec.EncodeContext{Registry: DefaultRegistry}
+ }
+ if vw == nil {
+ return nil, errors.New("cannot create a new Encoder with a nil ValueWriter")
+ }
+
+ return &Encoder{
+ ec: ec,
+ vw: vw,
+ }, nil
+}
+
+// Encode writes the BSON encoding of val to the stream.
+//
+// The documentation for Marshal contains details about the conversion of Go
+// values to BSON.
+func (e *Encoder) Encode(val interface{}) error {
+ if marshaler, ok := val.(Marshaler); ok {
+ // TODO(skriptble): Should we have a MarshalAppender interface so that we can have []byte reuse?
+ buf, err := marshaler.MarshalBSON()
+ if err != nil {
+ return err
+ }
+ return bsonrw.Copier{}.CopyDocumentFromBytes(e.vw, buf)
+ }
+
+ encoder, err := e.ec.LookupEncoder(reflect.TypeOf(val))
+ if err != nil {
+ return err
+ }
+ return encoder.EncodeValue(e.ec, e.vw, reflect.ValueOf(val))
+}
+
+// Reset will reset the state of the encoder, using the same *EncodeContext used in
+// the original construction but using vw.
+func (e *Encoder) Reset(vw bsonrw.ValueWriter) error {
+ e.vw = vw
+ return nil
+}
+
+// SetRegistry replaces the current registry of the encoder with r.
+func (e *Encoder) SetRegistry(r *bsoncodec.Registry) error {
+ e.ec.Registry = r
+ return nil
+}
+
+// SetContext replaces the current EncodeContext of the encoder with er.
+func (e *Encoder) SetContext(ec bsoncodec.EncodeContext) error {
+ e.ec = ec
+ return nil
+}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/marshal.go b/vendor/github.com/mongodb/mongo-go-driver/bson/marshal.go
new file mode 100644
index 0000000..398fb63
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/marshal.go
@@ -0,0 +1,156 @@
+// 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 bson
+
+import (
+ "github.com/mongodb/mongo-go-driver/bson/bsoncodec"
+ "github.com/mongodb/mongo-go-driver/bson/bsonrw"
+ "github.com/mongodb/mongo-go-driver/bson/bsontype"
+)
+
+const defaultDstCap = 256
+
+var bvwPool = bsonrw.NewBSONValueWriterPool()
+var extjPool = bsonrw.NewExtJSONValueWriterPool()
+
+// Marshaler is an interface implemented by types that can marshal themselves
+// into a BSON document represented as bytes. The bytes returned must be a valid
+// BSON document if the error is nil.
+type Marshaler interface {
+ MarshalBSON() ([]byte, error)
+}
+
+// ValueMarshaler is an interface implemented by types that can marshal
+// themselves into a BSON value as bytes. The type must be the valid type for
+// the bytes returned. The bytes and byte type together must be valid if the
+// error is nil.
+type ValueMarshaler interface {
+ MarshalBSONValue() (bsontype.Type, []byte, error)
+}
+
+// Marshal returns the BSON encoding of val.
+//
+// Marshal will use the default registry created by NewRegistry to recursively
+// marshal val into a []byte. Marshal will inspect struct tags and alter the
+// marshaling process accordingly.
+func Marshal(val interface{}) ([]byte, error) {
+ return MarshalWithRegistry(DefaultRegistry, val)
+}
+
+// MarshalAppend will append the BSON encoding of val to dst. If dst is not
+// large enough to hold the BSON encoding of val, dst will be grown.
+func MarshalAppend(dst []byte, val interface{}) ([]byte, error) {
+ return MarshalAppendWithRegistry(DefaultRegistry, dst, val)
+}
+
+// MarshalWithRegistry returns the BSON encoding of val using Registry r.
+func MarshalWithRegistry(r *bsoncodec.Registry, val interface{}) ([]byte, error) {
+ dst := make([]byte, 0, 256) // TODO: make the default cap a constant
+ return MarshalAppendWithRegistry(r, dst, val)
+}
+
+// MarshalWithContext returns the BSON encoding of val using EncodeContext ec.
+func MarshalWithContext(ec bsoncodec.EncodeContext, val interface{}) ([]byte, error) {
+ dst := make([]byte, 0, 256) // TODO: make the default cap a constant
+ return MarshalAppendWithContext(ec, dst, val)
+}
+
+// MarshalAppendWithRegistry will append the BSON encoding of val to dst using
+// Registry r. If dst is not large enough to hold the BSON encoding of val, dst
+// will be grown.
+func MarshalAppendWithRegistry(r *bsoncodec.Registry, dst []byte, val interface{}) ([]byte, error) {
+ return MarshalAppendWithContext(bsoncodec.EncodeContext{Registry: r}, dst, val)
+}
+
+// MarshalAppendWithContext will append the BSON encoding of val to dst using
+// EncodeContext ec. If dst is not large enough to hold the BSON encoding of val, dst
+// will be grown.
+func MarshalAppendWithContext(ec bsoncodec.EncodeContext, dst []byte, val interface{}) ([]byte, error) {
+ sw := new(bsonrw.SliceWriter)
+ *sw = dst
+ vw := bvwPool.Get(sw)
+ defer bvwPool.Put(vw)
+
+ enc := encPool.Get().(*Encoder)
+ defer encPool.Put(enc)
+
+ err := enc.Reset(vw)
+ if err != nil {
+ return nil, err
+ }
+ err = enc.SetContext(ec)
+ if err != nil {
+ return nil, err
+ }
+
+ err = enc.Encode(val)
+ if err != nil {
+ return nil, err
+ }
+
+ return *sw, nil
+}
+
+// MarshalExtJSON returns the extended JSON encoding of val.
+func MarshalExtJSON(val interface{}, canonical, escapeHTML bool) ([]byte, error) {
+ return MarshalExtJSONWithRegistry(DefaultRegistry, val, canonical, escapeHTML)
+}
+
+// MarshalExtJSONAppend will append the extended JSON encoding of val to dst.
+// If dst is not large enough to hold the extended JSON encoding of val, dst
+// will be grown.
+func MarshalExtJSONAppend(dst []byte, val interface{}, canonical, escapeHTML bool) ([]byte, error) {
+ return MarshalExtJSONAppendWithRegistry(DefaultRegistry, dst, val, canonical, escapeHTML)
+}
+
+// MarshalExtJSONWithRegistry returns the extended JSON encoding of val using Registry r.
+func MarshalExtJSONWithRegistry(r *bsoncodec.Registry, val interface{}, canonical, escapeHTML bool) ([]byte, error) {
+ dst := make([]byte, 0, defaultDstCap)
+ return MarshalExtJSONAppendWithContext(bsoncodec.EncodeContext{Registry: r}, dst, val, canonical, escapeHTML)
+}
+
+// MarshalExtJSONWithContext returns the extended JSON encoding of val using Registry r.
+func MarshalExtJSONWithContext(ec bsoncodec.EncodeContext, val interface{}, canonical, escapeHTML bool) ([]byte, error) {
+ dst := make([]byte, 0, defaultDstCap)
+ return MarshalExtJSONAppendWithContext(ec, dst, val, canonical, escapeHTML)
+}
+
+// MarshalExtJSONAppendWithRegistry will append the extended JSON encoding of
+// val to dst using Registry r. If dst is not large enough to hold the BSON
+// encoding of val, dst will be grown.
+func MarshalExtJSONAppendWithRegistry(r *bsoncodec.Registry, dst []byte, val interface{}, canonical, escapeHTML bool) ([]byte, error) {
+ return MarshalExtJSONAppendWithContext(bsoncodec.EncodeContext{Registry: r}, dst, val, canonical, escapeHTML)
+}
+
+// MarshalExtJSONAppendWithContext will append the extended JSON encoding of
+// val to dst using Registry r. If dst is not large enough to hold the BSON
+// encoding of val, dst will be grown.
+func MarshalExtJSONAppendWithContext(ec bsoncodec.EncodeContext, dst []byte, val interface{}, canonical, escapeHTML bool) ([]byte, error) {
+ sw := new(bsonrw.SliceWriter)
+ *sw = dst
+ ejvw := extjPool.Get(sw, canonical, escapeHTML)
+ defer extjPool.Put(ejvw)
+
+ enc := encPool.Get().(*Encoder)
+ defer encPool.Put(enc)
+
+ err := enc.Reset(ejvw)
+ if err != nil {
+ return nil, err
+ }
+ err = enc.SetContext(ec)
+ if err != nil {
+ return nil, err
+ }
+
+ err = enc.Encode(val)
+ if err != nil {
+ return nil, err
+ }
+
+ return *sw, nil
+}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/primitive/decimal.go b/vendor/github.com/mongodb/mongo-go-driver/bson/primitive/decimal.go
new file mode 100644
index 0000000..d7fdb22
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/primitive/decimal.go
@@ -0,0 +1,307 @@
+// 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
+//
+// Based on gopkg.in/mgo.v2/bson by Gustavo Niemeyer
+// See THIRD-PARTY-NOTICES for original license terms.
+
+package primitive
+
+import (
+ "fmt"
+ "strconv"
+ "strings"
+)
+
+// Decimal128 holds decimal128 BSON values.
+type Decimal128 struct {
+ h, l uint64
+}
+
+// NewDecimal128 creates a Decimal128 using the provide high and low uint64s.
+func NewDecimal128(h, l uint64) Decimal128 {
+ return Decimal128{h: h, l: l}
+}
+
+// GetBytes returns the underlying bytes of the BSON decimal value as two uint16 values. The first
+// contains the most first 8 bytes of the value and the second contains the latter.
+func (d Decimal128) GetBytes() (uint64, uint64) {
+ return d.h, d.l
+}
+
+// String returns a string representation of the decimal value.
+func (d Decimal128) String() string {
+ var pos int // positive sign
+ var e int // exponent
+ var h, l uint64 // significand high/low
+
+ if d.h>>63&1 == 0 {
+ pos = 1
+ }
+
+ switch d.h >> 58 & (1<<5 - 1) {
+ case 0x1F:
+ return "NaN"
+ case 0x1E:
+ return "-Infinity"[pos:]
+ }
+
+ l = d.l
+ if d.h>>61&3 == 3 {
+ // Bits: 1*sign 2*ignored 14*exponent 111*significand.
+ // Implicit 0b100 prefix in significand.
+ e = int(d.h>>47&(1<<14-1)) - 6176
+ //h = 4<<47 | d.h&(1<<47-1)
+ // Spec says all of these values are out of range.
+ h, l = 0, 0
+ } else {
+ // Bits: 1*sign 14*exponent 113*significand
+ e = int(d.h>>49&(1<<14-1)) - 6176
+ h = d.h & (1<<49 - 1)
+ }
+
+ // Would be handled by the logic below, but that's trivial and common.
+ if h == 0 && l == 0 && e == 0 {
+ return "-0"[pos:]
+ }
+
+ var repr [48]byte // Loop 5 times over 9 digits plus dot, negative sign, and leading zero.
+ var last = len(repr)
+ var i = len(repr)
+ var dot = len(repr) + e
+ var rem uint32
+Loop:
+ for d9 := 0; d9 < 5; d9++ {
+ h, l, rem = divmod(h, l, 1e9)
+ for d1 := 0; d1 < 9; d1++ {
+ // Handle "-0.0", "0.00123400", "-1.00E-6", "1.050E+3", etc.
+ if i < len(repr) && (dot == i || l == 0 && h == 0 && rem > 0 && rem < 10 && (dot < i-6 || e > 0)) {
+ e += len(repr) - i
+ i--
+ repr[i] = '.'
+ last = i - 1
+ dot = len(repr) // Unmark.
+ }
+ c := '0' + byte(rem%10)
+ rem /= 10
+ i--
+ repr[i] = c
+ // Handle "0E+3", "1E+3", etc.
+ if l == 0 && h == 0 && rem == 0 && i == len(repr)-1 && (dot < i-5 || e > 0) {
+ last = i
+ break Loop
+ }
+ if c != '0' {
+ last = i
+ }
+ // Break early. Works without it, but why.
+ if dot > i && l == 0 && h == 0 && rem == 0 {
+ break Loop
+ }
+ }
+ }
+ repr[last-1] = '-'
+ last--
+
+ if e > 0 {
+ return string(repr[last+pos:]) + "E+" + strconv.Itoa(e)
+ }
+ if e < 0 {
+ return string(repr[last+pos:]) + "E" + strconv.Itoa(e)
+ }
+ return string(repr[last+pos:])
+}
+
+func divmod(h, l uint64, div uint32) (qh, ql uint64, rem uint32) {
+ div64 := uint64(div)
+ a := h >> 32
+ aq := a / div64
+ ar := a % div64
+ b := ar<<32 + h&(1<<32-1)
+ bq := b / div64
+ br := b % div64
+ c := br<<32 + l>>32
+ cq := c / div64
+ cr := c % div64
+ d := cr<<32 + l&(1<<32-1)
+ dq := d / div64
+ dr := d % div64
+ return (aq<<32 | bq), (cq<<32 | dq), uint32(dr)
+}
+
+var dNaN = Decimal128{0x1F << 58, 0}
+var dPosInf = Decimal128{0x1E << 58, 0}
+var dNegInf = Decimal128{0x3E << 58, 0}
+
+func dErr(s string) (Decimal128, error) {
+ return dNaN, fmt.Errorf("cannot parse %q as a decimal128", s)
+}
+
+//ParseDecimal128 takes the given string and attempts to parse it into a valid
+// Decimal128 value.
+func ParseDecimal128(s string) (Decimal128, error) {
+ orig := s
+ if s == "" {
+ return dErr(orig)
+ }
+ neg := s[0] == '-'
+ if neg || s[0] == '+' {
+ s = s[1:]
+ }
+
+ if (len(s) == 3 || len(s) == 8) && (s[0] == 'N' || s[0] == 'n' || s[0] == 'I' || s[0] == 'i') {
+ if s == "NaN" || s == "nan" || strings.EqualFold(s, "nan") {
+ return dNaN, nil
+ }
+ if s == "Inf" || s == "inf" || strings.EqualFold(s, "inf") || strings.EqualFold(s, "infinity") {
+ if neg {
+ return dNegInf, nil
+ }
+ return dPosInf, nil
+ }
+ return dErr(orig)
+ }
+
+ var h, l uint64
+ var e int
+
+ var add, ovr uint32
+ var mul uint32 = 1
+ var dot = -1
+ var digits = 0
+ var i = 0
+ for i < len(s) {
+ c := s[i]
+ if mul == 1e9 {
+ h, l, ovr = muladd(h, l, mul, add)
+ mul, add = 1, 0
+ if ovr > 0 || h&((1<<15-1)<<49) > 0 {
+ return dErr(orig)
+ }
+ }
+ if c >= '0' && c <= '9' {
+ i++
+ if c > '0' || digits > 0 {
+ digits++
+ }
+ if digits > 34 {
+ if c == '0' {
+ // Exact rounding.
+ e++
+ continue
+ }
+ return dErr(orig)
+ }
+ mul *= 10
+ add *= 10
+ add += uint32(c - '0')
+ continue
+ }
+ if c == '.' {
+ i++
+ if dot >= 0 || i == 1 && len(s) == 1 {
+ return dErr(orig)
+ }
+ if i == len(s) {
+ break
+ }
+ if s[i] < '0' || s[i] > '9' || e > 0 {
+ return dErr(orig)
+ }
+ dot = i
+ continue
+ }
+ break
+ }
+ if i == 0 {
+ return dErr(orig)
+ }
+ if mul > 1 {
+ h, l, ovr = muladd(h, l, mul, add)
+ if ovr > 0 || h&((1<<15-1)<<49) > 0 {
+ return dErr(orig)
+ }
+ }
+ if dot >= 0 {
+ e += dot - i
+ }
+ if i+1 < len(s) && (s[i] == 'E' || s[i] == 'e') {
+ i++
+ eneg := s[i] == '-'
+ if eneg || s[i] == '+' {
+ i++
+ if i == len(s) {
+ return dErr(orig)
+ }
+ }
+ n := 0
+ for i < len(s) && n < 1e4 {
+ c := s[i]
+ i++
+ if c < '0' || c > '9' {
+ return dErr(orig)
+ }
+ n *= 10
+ n += int(c - '0')
+ }
+ if eneg {
+ n = -n
+ }
+ e += n
+ for e < -6176 {
+ // Subnormal.
+ var div uint32 = 1
+ for div < 1e9 && e < -6176 {
+ div *= 10
+ e++
+ }
+ var rem uint32
+ h, l, rem = divmod(h, l, div)
+ if rem > 0 {
+ return dErr(orig)
+ }
+ }
+ for e > 6111 {
+ // Clamped.
+ var mul uint32 = 1
+ for mul < 1e9 && e > 6111 {
+ mul *= 10
+ e--
+ }
+ h, l, ovr = muladd(h, l, mul, 0)
+ if ovr > 0 || h&((1<<15-1)<<49) > 0 {
+ return dErr(orig)
+ }
+ }
+ if e < -6176 || e > 6111 {
+ return dErr(orig)
+ }
+ }
+
+ if i < len(s) {
+ return dErr(orig)
+ }
+
+ h |= uint64(e+6176) & uint64(1<<14-1) << 49
+ if neg {
+ h |= 1 << 63
+ }
+ return Decimal128{h, l}, nil
+}
+
+func muladd(h, l uint64, mul uint32, add uint32) (resh, resl uint64, overflow uint32) {
+ mul64 := uint64(mul)
+ a := mul64 * (l & (1<<32 - 1))
+ b := a>>32 + mul64*(l>>32)
+ c := b>>32 + mul64*(h&(1<<32-1))
+ d := c>>32 + mul64*(h>>32)
+
+ a = a&(1<<32-1) + uint64(add)
+ b = b&(1<<32-1) + a>>32
+ c = c&(1<<32-1) + b>>32
+ d = d&(1<<32-1) + c>>32
+
+ return (d<<32 | c&(1<<32-1)), (b<<32 | a&(1<<32-1)), uint32(d >> 32)
+}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/primitive/objectid.go b/vendor/github.com/mongodb/mongo-go-driver/bson/primitive/objectid.go
new file mode 100644
index 0000000..9eaaa06
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/primitive/objectid.go
@@ -0,0 +1,154 @@
+// 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
+//
+// Based on gopkg.in/mgo.v2/bson by Gustavo Niemeyer
+// See THIRD-PARTY-NOTICES for original license terms.
+
+package primitive
+
+import (
+ "bytes"
+ "crypto/rand"
+ "encoding/binary"
+ "encoding/hex"
+ "encoding/json"
+ "errors"
+ "fmt"
+ "io"
+ "sync/atomic"
+ "time"
+)
+
+// ErrInvalidHex indicates that a hex string cannot be converted to an ObjectID.
+var ErrInvalidHex = errors.New("the provided hex string is not a valid ObjectID")
+
+// ObjectID is the BSON ObjectID type.
+type ObjectID [12]byte
+
+// NilObjectID is the zero value for ObjectID.
+var NilObjectID ObjectID
+
+var objectIDCounter = readRandomUint32()
+var processUnique = processUniqueBytes()
+
+// NewObjectID generates a new ObjectID.
+func NewObjectID() ObjectID {
+ var b [12]byte
+
+ binary.BigEndian.PutUint32(b[0:4], uint32(time.Now().Unix()))
+ copy(b[4:9], processUnique[:])
+ putUint24(b[9:12], atomic.AddUint32(&objectIDCounter, 1))
+
+ return b
+}
+
+// Hex returns the hex encoding of the ObjectID as a string.
+func (id ObjectID) Hex() string {
+ return hex.EncodeToString(id[:])
+}
+
+func (id ObjectID) String() string {
+ return fmt.Sprintf("ObjectID(%q)", id.Hex())
+}
+
+// IsZero returns true if id is the empty ObjectID.
+func (id ObjectID) IsZero() bool {
+ return bytes.Equal(id[:], NilObjectID[:])
+}
+
+// ObjectIDFromHex creates a new ObjectID from a hex string. It returns an error if the hex string is not a
+// valid ObjectID.
+func ObjectIDFromHex(s string) (ObjectID, error) {
+ b, err := hex.DecodeString(s)
+ if err != nil {
+ return NilObjectID, err
+ }
+
+ if len(b) != 12 {
+ return NilObjectID, ErrInvalidHex
+ }
+
+ var oid [12]byte
+ copy(oid[:], b[:])
+
+ return oid, nil
+}
+
+// MarshalJSON returns the ObjectID as a string
+func (id ObjectID) MarshalJSON() ([]byte, error) {
+ return json.Marshal(id.Hex())
+}
+
+// UnmarshalJSON populates the byte slice with the ObjectID. If the byte slice is 64 bytes long, it
+// will be populated with the hex representation of the ObjectID. If the byte slice is twelve bytes
+// long, it will be populated with the BSON representation of the ObjectID. Otherwise, it will
+// return an error.
+func (id *ObjectID) UnmarshalJSON(b []byte) error {
+ var err error
+ switch len(b) {
+ case 12:
+ copy(id[:], b)
+ default:
+ // Extended JSON
+ var res interface{}
+ err := json.Unmarshal(b, &res)
+ if err != nil {
+ return err
+ }
+ str, ok := res.(string)
+ if !ok {
+ m, ok := res.(map[string]interface{})
+ if !ok {
+ return errors.New("not an extended JSON ObjectID")
+ }
+ oid, ok := m["$oid"]
+ if !ok {
+ return errors.New("not an extended JSON ObjectID")
+ }
+ str, ok = oid.(string)
+ if !ok {
+ return errors.New("not an extended JSON ObjectID")
+ }
+ }
+
+ if len(str) != 24 {
+ return fmt.Errorf("cannot unmarshal into an ObjectID, the length must be 12 but it is %d", len(str))
+ }
+
+ _, err = hex.Decode(id[:], []byte(str))
+ if err != nil {
+ return err
+ }
+ }
+
+ return err
+}
+
+func processUniqueBytes() [5]byte {
+ var b [5]byte
+ _, err := io.ReadFull(rand.Reader, b[:])
+ if err != nil {
+ panic(fmt.Errorf("cannot initialize objectid package with crypto.rand.Reader: %v", err))
+ }
+
+ return b
+}
+
+func readRandomUint32() uint32 {
+ var b [4]byte
+ _, err := io.ReadFull(rand.Reader, b[:])
+ if err != nil {
+ panic(fmt.Errorf("cannot initialize objectid package with crypto.rand.Reader: %v", err))
+ }
+
+ return (uint32(b[0]) << 0) | (uint32(b[1]) << 8) | (uint32(b[2]) << 16) | (uint32(b[3]) << 24)
+}
+
+func putUint24(b []byte, v uint32) {
+ b[0] = byte(v >> 16)
+ b[1] = byte(v >> 8)
+ b[2] = byte(v)
+}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/primitive/primitive.go b/vendor/github.com/mongodb/mongo-go-driver/bson/primitive/primitive.go
new file mode 100644
index 0000000..b9b43f4
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/primitive/primitive.go
@@ -0,0 +1,149 @@
+// 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 primitive contains types similar to Go primitives for BSON types can do not have direct
+// Go primitive representations.
+package primitive
+
+import (
+ "bytes"
+ "fmt"
+)
+
+// Binary represents a BSON binary value.
+type Binary struct {
+ Subtype byte
+ Data []byte
+}
+
+// Equal compaes bp to bp2 and returns true is the are equal.
+func (bp Binary) Equal(bp2 Binary) bool {
+ if bp.Subtype != bp2.Subtype {
+ return false
+ }
+ return bytes.Equal(bp.Data, bp2.Data)
+}
+
+// Undefined represents the BSON undefined value type.
+type Undefined struct{}
+
+// DateTime represents the BSON datetime value.
+type DateTime int64
+
+// Null repreesnts the BSON null value.
+type Null struct{}
+
+// Regex represents a BSON regex value.
+type Regex struct {
+ Pattern string
+ Options string
+}
+
+func (rp Regex) String() string {
+ return fmt.Sprintf(`{"pattern": "%s", "options": "%s"}`, rp.Pattern, rp.Options)
+}
+
+// Equal compaes rp to rp2 and returns true is the are equal.
+func (rp Regex) Equal(rp2 Regex) bool {
+ return rp.Pattern == rp2.Pattern && rp.Options == rp.Options
+}
+
+// DBPointer represents a BSON dbpointer value.
+type DBPointer struct {
+ DB string
+ Pointer ObjectID
+}
+
+func (d DBPointer) String() string {
+ return fmt.Sprintf(`{"db": "%s", "pointer": "%s"}`, d.DB, d.Pointer)
+}
+
+// Equal compaes d to d2 and returns true is the are equal.
+func (d DBPointer) Equal(d2 DBPointer) bool {
+ return d.DB == d2.DB && bytes.Equal(d.Pointer[:], d2.Pointer[:])
+}
+
+// JavaScript represents a BSON JavaScript code value.
+type JavaScript string
+
+// Symbol represents a BSON symbol value.
+type Symbol string
+
+// CodeWithScope represents a BSON JavaScript code with scope value.
+type CodeWithScope struct {
+ Code JavaScript
+ Scope interface{}
+}
+
+func (cws CodeWithScope) String() string {
+ return fmt.Sprintf(`{"code": "%s", "scope": %v}`, cws.Code, cws.Scope)
+}
+
+// Timestamp represents a BSON timestamp value.
+type Timestamp struct {
+ T uint32
+ I uint32
+}
+
+// Equal compaes tp to tp2 and returns true is the are equal.
+func (tp Timestamp) Equal(tp2 Timestamp) bool {
+ return tp.T == tp2.T && tp.I == tp2.I
+}
+
+// MinKey represents the BSON minkey value.
+type MinKey struct{}
+
+// MaxKey represents the BSON maxkey value.
+type MaxKey struct{}
+
+// D represents a BSON Document. This type can be used to represent BSON in a concise and readable
+// manner. It should generally be used when serializing to BSON. For deserializing, the Raw or
+// Document types should be used.
+//
+// Example usage:
+//
+// primitive.D{{"foo", "bar"}, {"hello", "world"}, {"pi", 3.14159}}
+//
+// This type should be used in situations where order matters, such as MongoDB commands. If the
+// order is not important, a map is more comfortable and concise.
+type D []E
+
+// Map creates a map from the elements of the D.
+func (d D) Map() M {
+ m := make(M, len(d))
+ for _, e := range d {
+ m[e.Key] = e.Value
+ }
+ return m
+}
+
+// E represents a BSON element for a D. It is usually used inside a D.
+type E struct {
+ Key string
+ Value interface{}
+}
+
+// M is an unordered, concise representation of a BSON Document. It should generally be used to
+// serialize BSON when the order of the elements of a BSON document do not matter. If the element
+// order matters, use a D instead.
+//
+// Example usage:
+//
+// primitive.M{"foo": "bar", "hello": "world", "pi": 3.14159}
+//
+// This type is handled in the encoders as a regular map[string]interface{}. The elements will be
+// serialized in an undefined, random order, and the order will be different each time.
+type M map[string]interface{}
+
+// An A represents a BSON array. This type can be used to represent a BSON array in a concise and
+// readable manner. It should generally be used when serializing to BSON. For deserializing, the
+// RawArray or Array types should be used.
+//
+// Example usage:
+//
+// primitive.A{"bar", "world", 3.14159, primitive.D{{"qux", 12345}}}
+//
+type A []interface{}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/primitive_codecs.go b/vendor/github.com/mongodb/mongo-go-driver/bson/primitive_codecs.go
new file mode 100644
index 0000000..6536b2e
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/primitive_codecs.go
@@ -0,0 +1,111 @@
+// 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 bson
+
+import (
+ "errors"
+ "reflect"
+
+ "github.com/mongodb/mongo-go-driver/bson/bsoncodec"
+ "github.com/mongodb/mongo-go-driver/bson/bsonrw"
+)
+
+var primitiveCodecs PrimitiveCodecs
+
+// PrimitiveCodecs is a namespace for all of the default bsoncodec.Codecs for the primitive types
+// defined in this package.
+type PrimitiveCodecs struct{}
+
+// RegisterPrimitiveCodecs will register the encode and decode methods attached to PrimitiveCodecs
+// with the provided RegistryBuilder. if rb is nil, a new empty RegistryBuilder will be created.
+func (pc PrimitiveCodecs) RegisterPrimitiveCodecs(rb *bsoncodec.RegistryBuilder) {
+ if rb == nil {
+ panic(errors.New("argument to RegisterPrimitiveCodecs must not be nil"))
+ }
+
+ rb.
+ RegisterEncoder(tRawValue, bsoncodec.ValueEncoderFunc(pc.RawValueEncodeValue)).
+ RegisterEncoder(tRaw, bsoncodec.ValueEncoderFunc(pc.RawEncodeValue)).
+ RegisterDecoder(tRawValue, bsoncodec.ValueDecoderFunc(pc.RawValueDecodeValue)).
+ RegisterDecoder(tRaw, bsoncodec.ValueDecoderFunc(pc.RawDecodeValue))
+}
+
+// RawValueEncodeValue is the ValueEncoderFunc for RawValue.
+func (PrimitiveCodecs) RawValueEncodeValue(ec bsoncodec.EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if !val.IsValid() || val.Type() != tRawValue {
+ return bsoncodec.ValueEncoderError{Name: "RawValueEncodeValue", Types: []reflect.Type{tRawValue}, Received: val}
+ }
+
+ rawvalue := val.Interface().(RawValue)
+
+ return bsonrw.Copier{}.CopyValueFromBytes(vw, rawvalue.Type, rawvalue.Value)
+}
+
+// RawValueDecodeValue is the ValueDecoderFunc for RawValue.
+func (PrimitiveCodecs) RawValueDecodeValue(dc bsoncodec.DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ if !val.CanSet() || val.Type() != tRawValue {
+ return bsoncodec.ValueDecoderError{Name: "RawValueDecodeValue", Types: []reflect.Type{tRawValue}, Received: val}
+ }
+
+ t, value, err := bsonrw.Copier{}.CopyValueToBytes(vr)
+ if err != nil {
+ return err
+ }
+
+ val.Set(reflect.ValueOf(RawValue{Type: t, Value: value}))
+ return nil
+}
+
+// RawEncodeValue is the ValueEncoderFunc for Reader.
+func (PrimitiveCodecs) RawEncodeValue(ec bsoncodec.EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if !val.IsValid() || val.Type() != tRaw {
+ return bsoncodec.ValueEncoderError{Name: "RawEncodeValue", Types: []reflect.Type{tRaw}, Received: val}
+ }
+
+ rdr := val.Interface().(Raw)
+
+ return bsonrw.Copier{}.CopyDocumentFromBytes(vw, rdr)
+}
+
+// RawDecodeValue is the ValueDecoderFunc for Reader.
+func (PrimitiveCodecs) RawDecodeValue(dc bsoncodec.DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ if !val.CanSet() || val.Type() != tRaw {
+ return bsoncodec.ValueDecoderError{Name: "RawDecodeValue", Types: []reflect.Type{tRaw}, Received: val}
+ }
+
+ if val.IsNil() {
+ val.Set(reflect.MakeSlice(val.Type(), 0, 0))
+ }
+
+ val.SetLen(0)
+
+ rdr, err := bsonrw.Copier{}.AppendDocumentBytes(val.Interface().(Raw), vr)
+ val.Set(reflect.ValueOf(rdr))
+ return err
+}
+
+func (pc PrimitiveCodecs) encodeRaw(ec bsoncodec.EncodeContext, dw bsonrw.DocumentWriter, raw Raw) error {
+ var copier bsonrw.Copier
+ elems, err := raw.Elements()
+ if err != nil {
+ return err
+ }
+ for _, elem := range elems {
+ dvw, err := dw.WriteDocumentElement(elem.Key())
+ if err != nil {
+ return err
+ }
+
+ val := elem.Value()
+ err = copier.CopyValueFromBytes(dvw, val.Type, val.Value)
+ if err != nil {
+ return err
+ }
+ }
+
+ return dw.WriteDocumentEnd()
+}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/raw.go b/vendor/github.com/mongodb/mongo-go-driver/bson/raw.go
new file mode 100644
index 0000000..abd6e38
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/raw.go
@@ -0,0 +1,92 @@
+// 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 bson
+
+import (
+ "errors"
+ "io"
+
+ "github.com/mongodb/mongo-go-driver/x/bsonx/bsoncore"
+)
+
+// ErrNilReader indicates that an operation was attempted on a nil bson.Reader.
+var ErrNilReader = errors.New("nil reader")
+var errValidateDone = errors.New("validation loop complete")
+
+// Raw is a wrapper around a byte slice. It will interpret the slice as a
+// BSON document. This type is a wrapper around a bsoncore.Document. Errors returned from the
+// methods on this type and associated types come from the bsoncore package.
+type Raw []byte
+
+// NewFromIOReader reads in a document from the given io.Reader and constructs a Raw from
+// it.
+func NewFromIOReader(r io.Reader) (Raw, error) {
+ doc, err := bsoncore.NewDocumentFromReader(r)
+ return Raw(doc), err
+}
+
+// Validate validates the document. This method only validates the first document in
+// the slice, to validate other documents, the slice must be resliced.
+func (r Raw) Validate() (err error) { return bsoncore.Document(r).Validate() }
+
+// Lookup search the document, potentially recursively, for the given key. If
+// there are multiple keys provided, this method will recurse down, as long as
+// the top and intermediate nodes are either documents or arrays.If an error
+// occurs or if the value doesn't exist, an empty RawValue is returned.
+func (r Raw) Lookup(key ...string) RawValue {
+ return convertFromCoreValue(bsoncore.Document(r).Lookup(key...))
+}
+
+// LookupErr searches the document and potentially subdocuments or arrays for the
+// provided key. Each key provided to this method represents a layer of depth.
+func (r Raw) LookupErr(key ...string) (RawValue, error) {
+ val, err := bsoncore.Document(r).LookupErr(key...)
+ return convertFromCoreValue(val), err
+}
+
+// Elements returns this document as a slice of elements. The returned slice will contain valid
+// elements. If the document is not valid, the elements up to the invalid point will be returned
+// along with an error.
+func (r Raw) Elements() ([]RawElement, error) {
+ elems, err := bsoncore.Document(r).Elements()
+ relems := make([]RawElement, 0, len(elems))
+ for _, elem := range elems {
+ relems = append(relems, RawElement(elem))
+ }
+ return relems, err
+}
+
+// Values returns this document as a slice of values. The returned slice will contain valid values.
+// If the document is not valid, the values up to the invalid point will be returned along with an
+// error.
+func (r Raw) Values() ([]RawValue, error) {
+ vals, err := bsoncore.Document(r).Values()
+ rvals := make([]RawValue, 0, len(vals))
+ for _, val := range vals {
+ rvals = append(rvals, convertFromCoreValue(val))
+ }
+ return rvals, err
+}
+
+// Index searches for and retrieves the element at the given index. This method will panic if
+// the document is invalid or if the index is out of bounds.
+func (r Raw) Index(index uint) RawElement { return RawElement(bsoncore.Document(r).Index(index)) }
+
+// IndexErr searches for and retrieves the element at the given index.
+func (r Raw) IndexErr(index uint) (RawElement, error) {
+ elem, err := bsoncore.Document(r).IndexErr(index)
+ return RawElement(elem), err
+}
+
+// String implements the fmt.Stringer interface.
+func (r Raw) String() string { return bsoncore.Document(r).String() }
+
+// readi32 is a helper function for reading an int32 from slice of bytes.
+func readi32(b []byte) int32 {
+ _ = b[3] // bounds check hint to compiler; see golang.org/issue/14808
+ return int32(b[0]) | int32(b[1])<<8 | int32(b[2])<<16 | int32(b[3])<<24
+}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/raw_element.go b/vendor/github.com/mongodb/mongo-go-driver/bson/raw_element.go
new file mode 100644
index 0000000..2a01390
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/raw_element.go
@@ -0,0 +1,51 @@
+// 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 bson
+
+import (
+ "github.com/mongodb/mongo-go-driver/x/bsonx/bsoncore"
+)
+
+// RawElement represents a BSON element in byte form. This type provides a simple way to
+// transform a slice of bytes into a BSON element and extract information from it.
+//
+// RawElement is a thin wrapper around a bsoncore.Element.
+type RawElement []byte
+
+// Key returns the key for this element. If the element is not valid, this method returns an empty
+// string. If knowing if the element is valid is important, use KeyErr.
+func (re RawElement) Key() string { return bsoncore.Element(re).Key() }
+
+// KeyErr returns the key for this element, returning an error if the element is not valid.
+func (re RawElement) KeyErr() (string, error) { return bsoncore.Element(re).KeyErr() }
+
+// Value returns the value of this element. If the element is not valid, this method returns an
+// empty Value. If knowing if the element is valid is important, use ValueErr.
+func (re RawElement) Value() RawValue { return convertFromCoreValue(bsoncore.Element(re).Value()) }
+
+// ValueErr returns the value for this element, returning an error if the element is not valid.
+func (re RawElement) ValueErr() (RawValue, error) {
+ val, err := bsoncore.Element(re).ValueErr()
+ return convertFromCoreValue(val), err
+}
+
+// Validate ensures re is a valid BSON element.
+func (re RawElement) Validate() error { return bsoncore.Element(re).Validate() }
+
+// String implements the fmt.Stringer interface. The output will be in extended JSON format.
+func (re RawElement) String() string {
+ doc := bsoncore.BuildDocument(nil, re)
+ j, err := MarshalExtJSON(Raw(doc), true, false)
+ if err != nil {
+ return "<malformed>"
+ }
+ return string(j)
+}
+
+// DebugString outputs a human readable version of RawElement. It will attempt to stringify the
+// valid components of the element even if the entire element is not valid.
+func (re RawElement) DebugString() string { return bsoncore.Element(re).DebugString() }
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/raw_value.go b/vendor/github.com/mongodb/mongo-go-driver/bson/raw_value.go
new file mode 100644
index 0000000..2803b80
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/raw_value.go
@@ -0,0 +1,287 @@
+// 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 bson
+
+import (
+ "bytes"
+ "errors"
+ "fmt"
+ "reflect"
+ "time"
+
+ "github.com/mongodb/mongo-go-driver/bson/bsoncodec"
+ "github.com/mongodb/mongo-go-driver/bson/bsonrw"
+ "github.com/mongodb/mongo-go-driver/bson/bsontype"
+ "github.com/mongodb/mongo-go-driver/bson/primitive"
+ "github.com/mongodb/mongo-go-driver/x/bsonx/bsoncore"
+)
+
+// ErrNilContext is returned when the provided DecodeContext is nil.
+var ErrNilContext = errors.New("DecodeContext cannot be nil")
+
+// ErrNilRegistry is returned when the provided registry is nil.
+var ErrNilRegistry = errors.New("Registry cannot be nil")
+
+// RawValue represents a BSON value in byte form. It can be used to hold unprocessed BSON or to
+// defer processing of BSON. Type is the BSON type of the value and Value are the raw bytes that
+// represent the element.
+//
+// This type wraps bsoncore.Value for most of it's functionality.
+type RawValue struct {
+ Type bsontype.Type
+ Value []byte
+
+ r *bsoncodec.Registry
+}
+
+// Unmarshal deserializes BSON into the provided val. If RawValue cannot be unmarshaled into val, an
+// error is returned. This method will use the registry used to create the RawValue, if the RawValue
+// was created from partial BSON processing, or it will use the default registry. Users wishing to
+// specify the registry to use should use UnmarshalWithRegistry.
+func (rv RawValue) Unmarshal(val interface{}) error {
+ reg := rv.r
+ if reg == nil {
+ reg = DefaultRegistry
+ }
+ return rv.UnmarshalWithRegistry(reg, val)
+}
+
+// Equal compares rv and rv2 and returns true if they are equal.
+func (rv RawValue) Equal(rv2 RawValue) bool {
+ if rv.Type != rv2.Type {
+ return false
+ }
+
+ if !bytes.Equal(rv.Value, rv2.Value) {
+ return false
+ }
+
+ return true
+}
+
+// UnmarshalWithRegistry performs the same unmarshalling as Unmarshal but uses the provided registry
+// instead of the one attached or the default registry.
+func (rv RawValue) UnmarshalWithRegistry(r *bsoncodec.Registry, val interface{}) error {
+ if r == nil {
+ return ErrNilRegistry
+ }
+
+ vr := bsonrw.NewBSONValueReader(rv.Type, rv.Value)
+ rval := reflect.ValueOf(val)
+ if rval.Kind() != reflect.Ptr {
+ return fmt.Errorf("argument to Unmarshal* must be a pointer to a type, but got %v", rval)
+ }
+ rval = rval.Elem()
+ dec, err := r.LookupDecoder(rval.Type())
+ if err != nil {
+ return err
+ }
+ return dec.DecodeValue(bsoncodec.DecodeContext{Registry: r}, vr, rval)
+}
+
+// UnmarshalWithContext performs the same unmarshalling as Unmarshal but uses the provided DecodeContext
+// instead of the one attached or the default registry.
+func (rv RawValue) UnmarshalWithContext(dc *bsoncodec.DecodeContext, val interface{}) error {
+ if dc == nil {
+ return ErrNilContext
+ }
+
+ vr := bsonrw.NewBSONValueReader(rv.Type, rv.Value)
+ rval := reflect.ValueOf(val)
+ if rval.Kind() != reflect.Ptr {
+ return fmt.Errorf("argument to Unmarshal* must be a pointer to a type, but got %v", rval)
+ }
+ rval = rval.Elem()
+ dec, err := dc.LookupDecoder(rval.Type())
+ if err != nil {
+ return err
+ }
+ return dec.DecodeValue(*dc, vr, rval)
+}
+
+func convertFromCoreValue(v bsoncore.Value) RawValue { return RawValue{Type: v.Type, Value: v.Data} }
+func convertToCoreValue(v RawValue) bsoncore.Value { return bsoncore.Value{Type: v.Type, Data: v.Value} }
+
+// Validate ensures the value is a valid BSON value.
+func (rv RawValue) Validate() error { return convertToCoreValue(rv).Validate() }
+
+// IsNumber returns true if the type of v is a numeric BSON type.
+func (rv RawValue) IsNumber() bool { return convertToCoreValue(rv).IsNumber() }
+
+// String implements the fmt.String interface. This method will return values in extended JSON
+// format. If the value is not valid, this returns an empty string
+func (rv RawValue) String() string { return convertToCoreValue(rv).String() }
+
+// DebugString outputs a human readable version of Document. It will attempt to stringify the
+// valid components of the document even if the entire document is not valid.
+func (rv RawValue) DebugString() string { return convertToCoreValue(rv).DebugString() }
+
+// Double returns the float64 value for this element.
+// It panics if e's BSON type is not bsontype.Double.
+func (rv RawValue) Double() float64 { return convertToCoreValue(rv).Double() }
+
+// DoubleOK is the same as Double, but returns a boolean instead of panicking.
+func (rv RawValue) DoubleOK() (float64, bool) { return convertToCoreValue(rv).DoubleOK() }
+
+// StringValue returns the string value for this element.
+// It panics if e's BSON type is not bsontype.String.
+//
+// NOTE: This method is called StringValue to avoid a collision with the String method which
+// implements the fmt.Stringer interface.
+func (rv RawValue) StringValue() string { return convertToCoreValue(rv).StringValue() }
+
+// StringValueOK is the same as StringValue, but returns a boolean instead of
+// panicking.
+func (rv RawValue) StringValueOK() (string, bool) { return convertToCoreValue(rv).StringValueOK() }
+
+// Document returns the BSON document the Value represents as a Document. It panics if the
+// value is a BSON type other than document.
+func (rv RawValue) Document() Raw { return Raw(convertToCoreValue(rv).Document()) }
+
+// DocumentOK is the same as Document, except it returns a boolean
+// instead of panicking.
+func (rv RawValue) DocumentOK() (Raw, bool) {
+ doc, ok := convertToCoreValue(rv).DocumentOK()
+ return Raw(doc), ok
+}
+
+// Array returns the BSON array the Value represents as an Array. It panics if the
+// value is a BSON type other than array.
+func (rv RawValue) Array() Raw { return Raw(convertToCoreValue(rv).Array()) }
+
+// ArrayOK is the same as Array, except it returns a boolean instead
+// of panicking.
+func (rv RawValue) ArrayOK() (Raw, bool) {
+ doc, ok := convertToCoreValue(rv).ArrayOK()
+ return Raw(doc), ok
+}
+
+// Binary returns the BSON binary value the Value represents. It panics if the value is a BSON type
+// other than binary.
+func (rv RawValue) Binary() (subtype byte, data []byte) { return convertToCoreValue(rv).Binary() }
+
+// BinaryOK is the same as Binary, except it returns a boolean instead of
+// panicking.
+func (rv RawValue) BinaryOK() (subtype byte, data []byte, ok bool) {
+ return convertToCoreValue(rv).BinaryOK()
+}
+
+// ObjectID returns the BSON objectid value the Value represents. It panics if the value is a BSON
+// type other than objectid.
+func (rv RawValue) ObjectID() primitive.ObjectID { return convertToCoreValue(rv).ObjectID() }
+
+// ObjectIDOK is the same as ObjectID, except it returns a boolean instead of
+// panicking.
+func (rv RawValue) ObjectIDOK() (primitive.ObjectID, bool) { return convertToCoreValue(rv).ObjectIDOK() }
+
+// Boolean returns the boolean value the Value represents. It panics if the
+// value is a BSON type other than boolean.
+func (rv RawValue) Boolean() bool { return convertToCoreValue(rv).Boolean() }
+
+// BooleanOK is the same as Boolean, except it returns a boolean instead of
+// panicking.
+func (rv RawValue) BooleanOK() (bool, bool) { return convertToCoreValue(rv).BooleanOK() }
+
+// DateTime returns the BSON datetime value the Value represents as a
+// unix timestamp. It panics if the value is a BSON type other than datetime.
+func (rv RawValue) DateTime() int64 { return convertToCoreValue(rv).DateTime() }
+
+// DateTimeOK is the same as DateTime, except it returns a boolean instead of
+// panicking.
+func (rv RawValue) DateTimeOK() (int64, bool) { return convertToCoreValue(rv).DateTimeOK() }
+
+// Time returns the BSON datetime value the Value represents. It panics if the value is a BSON
+// type other than datetime.
+func (rv RawValue) Time() time.Time { return convertToCoreValue(rv).Time() }
+
+// TimeOK is the same as Time, except it returns a boolean instead of
+// panicking.
+func (rv RawValue) TimeOK() (time.Time, bool) { return convertToCoreValue(rv).TimeOK() }
+
+// Regex returns the BSON regex value the Value represents. It panics if the value is a BSON
+// type other than regex.
+func (rv RawValue) Regex() (pattern, options string) { return convertToCoreValue(rv).Regex() }
+
+// RegexOK is the same as Regex, except it returns a boolean instead of
+// panicking.
+func (rv RawValue) RegexOK() (pattern, options string, ok bool) {
+ return convertToCoreValue(rv).RegexOK()
+}
+
+// DBPointer returns the BSON dbpointer value the Value represents. It panics if the value is a BSON
+// type other than DBPointer.
+func (rv RawValue) DBPointer() (string, primitive.ObjectID) { return convertToCoreValue(rv).DBPointer() }
+
+// DBPointerOK is the same as DBPoitner, except that it returns a boolean
+// instead of panicking.
+func (rv RawValue) DBPointerOK() (string, primitive.ObjectID, bool) {
+ return convertToCoreValue(rv).DBPointerOK()
+}
+
+// JavaScript returns the BSON JavaScript code value the Value represents. It panics if the value is
+// a BSON type other than JavaScript code.
+func (rv RawValue) JavaScript() string { return convertToCoreValue(rv).JavaScript() }
+
+// JavaScriptOK is the same as Javascript, excepti that it returns a boolean
+// instead of panicking.
+func (rv RawValue) JavaScriptOK() (string, bool) { return convertToCoreValue(rv).JavaScriptOK() }
+
+// Symbol returns the BSON symbol value the Value represents. It panics if the value is a BSON
+// type other than symbol.
+func (rv RawValue) Symbol() string { return convertToCoreValue(rv).Symbol() }
+
+// SymbolOK is the same as Symbol, excepti that it returns a boolean
+// instead of panicking.
+func (rv RawValue) SymbolOK() (string, bool) { return convertToCoreValue(rv).SymbolOK() }
+
+// CodeWithScope returns the BSON JavaScript code with scope the Value represents.
+// It panics if the value is a BSON type other than JavaScript code with scope.
+func (rv RawValue) CodeWithScope() (string, Raw) {
+ code, scope := convertToCoreValue(rv).CodeWithScope()
+ return code, Raw(scope)
+}
+
+// CodeWithScopeOK is the same as CodeWithScope, except that it returns a boolean instead of
+// panicking.
+func (rv RawValue) CodeWithScopeOK() (string, Raw, bool) {
+ code, scope, ok := convertToCoreValue(rv).CodeWithScopeOK()
+ return code, Raw(scope), ok
+}
+
+// Int32 returns the int32 the Value represents. It panics if the value is a BSON type other than
+// int32.
+func (rv RawValue) Int32() int32 { return convertToCoreValue(rv).Int32() }
+
+// Int32OK is the same as Int32, except that it returns a boolean instead of
+// panicking.
+func (rv RawValue) Int32OK() (int32, bool) { return convertToCoreValue(rv).Int32OK() }
+
+// Timestamp returns the BSON timestamp value the Value represents. It panics if the value is a
+// BSON type other than timestamp.
+func (rv RawValue) Timestamp() (t, i uint32) { return convertToCoreValue(rv).Timestamp() }
+
+// TimestampOK is the same as Timestamp, except that it returns a boolean
+// instead of panicking.
+func (rv RawValue) TimestampOK() (t, i uint32, ok bool) { return convertToCoreValue(rv).TimestampOK() }
+
+// Int64 returns the int64 the Value represents. It panics if the value is a BSON type other than
+// int64.
+func (rv RawValue) Int64() int64 { return convertToCoreValue(rv).Int64() }
+
+// Int64OK is the same as Int64, except that it returns a boolean instead of
+// panicking.
+func (rv RawValue) Int64OK() (int64, bool) { return convertToCoreValue(rv).Int64OK() }
+
+// Decimal128 returns the decimal the Value represents. It panics if the value is a BSON type other than
+// decimal.
+func (rv RawValue) Decimal128() primitive.Decimal128 { return convertToCoreValue(rv).Decimal128() }
+
+// Decimal128OK is the same as Decimal128, except that it returns a boolean
+// instead of panicking.
+func (rv RawValue) Decimal128OK() (primitive.Decimal128, bool) {
+ return convertToCoreValue(rv).Decimal128OK()
+}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/registry.go b/vendor/github.com/mongodb/mongo-go-driver/bson/registry.go
new file mode 100644
index 0000000..c9ef029
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/registry.go
@@ -0,0 +1,24 @@
+// 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 bson
+
+import "github.com/mongodb/mongo-go-driver/bson/bsoncodec"
+
+// DefaultRegistry is the default bsoncodec.Registry. It contains the default codecs and the
+// primitive codecs.
+var DefaultRegistry = NewRegistryBuilder().Build()
+
+// NewRegistryBuilder creates a new RegistryBuilder configured with the default encoders and
+// deocders from the bsoncodec.DefaultValueEncoders and bsoncodec.DefaultValueDecoders types and the
+// PrimitiveCodecs type in this package.
+func NewRegistryBuilder() *bsoncodec.RegistryBuilder {
+ rb := bsoncodec.NewRegistryBuilder()
+ bsoncodec.DefaultValueEncoders{}.RegisterDefaultEncoders(rb)
+ bsoncodec.DefaultValueDecoders{}.RegisterDefaultDecoders(rb)
+ primitiveCodecs.RegisterPrimitiveCodecs(rb)
+ return rb
+}
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/types.go b/vendor/github.com/mongodb/mongo-go-driver/bson/types.go
new file mode 100644
index 0000000..7109254
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/types.go
@@ -0,0 +1,85 @@
+// 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 bson
+
+import (
+ "reflect"
+ "time"
+
+ "github.com/mongodb/mongo-go-driver/bson/bsontype"
+ "github.com/mongodb/mongo-go-driver/bson/primitive"
+)
+
+// These constants uniquely refer to each BSON type.
+const (
+ TypeDouble = bsontype.Double
+ TypeString = bsontype.String
+ TypeEmbeddedDocument = bsontype.EmbeddedDocument
+ TypeArray = bsontype.Array
+ TypeBinary = bsontype.Binary
+ TypeUndefined = bsontype.Undefined
+ TypeObjectID = bsontype.ObjectID
+ TypeBoolean = bsontype.Boolean
+ TypeDateTime = bsontype.DateTime
+ TypeNull = bsontype.Null
+ TypeRegex = bsontype.Regex
+ TypeDBPointer = bsontype.DBPointer
+ TypeJavaScript = bsontype.JavaScript
+ TypeSymbol = bsontype.Symbol
+ TypeCodeWithScope = bsontype.CodeWithScope
+ TypeInt32 = bsontype.Int32
+ TypeTimestamp = bsontype.Timestamp
+ TypeInt64 = bsontype.Int64
+ TypeDecimal128 = bsontype.Decimal128
+ TypeMinKey = bsontype.MinKey
+ TypeMaxKey = bsontype.MaxKey
+)
+
+var tBinary = reflect.TypeOf(primitive.Binary{})
+var tBool = reflect.TypeOf(false)
+var tCodeWithScope = reflect.TypeOf(primitive.CodeWithScope{})
+var tDBPointer = reflect.TypeOf(primitive.DBPointer{})
+var tDecimal = reflect.TypeOf(primitive.Decimal128{})
+var tD = reflect.TypeOf(D{})
+var tA = reflect.TypeOf(A{})
+var tDateTime = reflect.TypeOf(primitive.DateTime(0))
+var tUndefined = reflect.TypeOf(primitive.Undefined{})
+var tNull = reflect.TypeOf(primitive.Null{})
+var tRawValue = reflect.TypeOf(RawValue{})
+var tFloat32 = reflect.TypeOf(float32(0))
+var tFloat64 = reflect.TypeOf(float64(0))
+var tInt = reflect.TypeOf(int(0))
+var tInt8 = reflect.TypeOf(int8(0))
+var tInt16 = reflect.TypeOf(int16(0))
+var tInt32 = reflect.TypeOf(int32(0))
+var tInt64 = reflect.TypeOf(int64(0))
+var tJavaScript = reflect.TypeOf(primitive.JavaScript(""))
+var tOID = reflect.TypeOf(primitive.ObjectID{})
+var tRaw = reflect.TypeOf(Raw(nil))
+var tRegex = reflect.TypeOf(primitive.Regex{})
+var tString = reflect.TypeOf("")
+var tSymbol = reflect.TypeOf(primitive.Symbol(""))
+var tTime = reflect.TypeOf(time.Time{})
+var tTimestamp = reflect.TypeOf(primitive.Timestamp{})
+var tUint = reflect.TypeOf(uint(0))
+var tUint8 = reflect.TypeOf(uint8(0))
+var tUint16 = reflect.TypeOf(uint16(0))
+var tUint32 = reflect.TypeOf(uint32(0))
+var tUint64 = reflect.TypeOf(uint64(0))
+var tMinKey = reflect.TypeOf(primitive.MinKey{})
+var tMaxKey = reflect.TypeOf(primitive.MaxKey{})
+
+var tEmpty = reflect.TypeOf((*interface{})(nil)).Elem()
+var tEmptySlice = reflect.TypeOf([]interface{}(nil))
+
+var zeroVal reflect.Value
+
+// this references the quantity of milliseconds between zero time and
+// the unix epoch. useful for making sure that we convert time.Time
+// objects correctly to match the legacy bson library's handling of
+// time.Time values.
+const zeroEpochMs = int64(62135596800000)
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/unmarshal.go b/vendor/github.com/mongodb/mongo-go-driver/bson/unmarshal.go
new file mode 100644
index 0000000..2b3cca8
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/unmarshal.go
@@ -0,0 +1,101 @@
+// 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 bson
+
+import (
+ "bytes"
+
+ "github.com/mongodb/mongo-go-driver/bson/bsoncodec"
+ "github.com/mongodb/mongo-go-driver/bson/bsonrw"
+ "github.com/mongodb/mongo-go-driver/bson/bsontype"
+)
+
+// Unmarshaler is an interface implemented by types that can unmarshal a BSON
+// document representation of themselves. The BSON bytes can be assumed to be
+// valid. UnmarshalBSON must copy the BSON bytes if it wishes to retain the data
+// after returning.
+type Unmarshaler interface {
+ UnmarshalBSON([]byte) error
+}
+
+// ValueUnmarshaler is an interface implemented by types that can unmarshal a
+// BSON value representaiton of themselves. The BSON bytes and type can be
+// assumed to be valid. UnmarshalBSONValue must copy the BSON value bytes if it
+// wishes to retain the data after returning.
+type ValueUnmarshaler interface {
+ UnmarshalBSONValue(bsontype.Type, []byte) error
+}
+
+// Unmarshal parses the BSON-encoded data and stores the result in the value
+// pointed to by val. If val is nil or not a pointer, Unmarshal returns
+// InvalidUnmarshalError.
+func Unmarshal(data []byte, val interface{}) error {
+ return UnmarshalWithRegistry(DefaultRegistry, data, val)
+}
+
+// UnmarshalWithRegistry parses the BSON-encoded data using Registry r and
+// stores the result in the value pointed to by val. If val is nil or not
+// a pointer, UnmarshalWithRegistry returns InvalidUnmarshalError.
+func UnmarshalWithRegistry(r *bsoncodec.Registry, data []byte, val interface{}) error {
+ vr := bsonrw.NewBSONDocumentReader(data)
+ return unmarshalFromReader(bsoncodec.DecodeContext{Registry: r}, vr, val)
+}
+
+// UnmarshalWithContext parses the BSON-encoded data using DecodeContext dc and
+// stores the result in the value pointed to by val. If val is nil or not
+// a pointer, UnmarshalWithRegistry returns InvalidUnmarshalError.
+func UnmarshalWithContext(dc bsoncodec.DecodeContext, data []byte, val interface{}) error {
+ vr := bsonrw.NewBSONDocumentReader(data)
+ return unmarshalFromReader(dc, vr, val)
+}
+
+// UnmarshalExtJSON parses the extended JSON-encoded data and stores the result
+// in the value pointed to by val. If val is nil or not a pointer, Unmarshal
+// returns InvalidUnmarshalError.
+func UnmarshalExtJSON(data []byte, canonical bool, val interface{}) error {
+ return UnmarshalExtJSONWithRegistry(DefaultRegistry, data, canonical, val)
+}
+
+// UnmarshalExtJSONWithRegistry parses the extended JSON-encoded data using
+// Registry r and stores the result in the value pointed to by val. If val is
+// nil or not a pointer, UnmarshalWithRegistry returns InvalidUnmarshalError.
+func UnmarshalExtJSONWithRegistry(r *bsoncodec.Registry, data []byte, canonical bool, val interface{}) error {
+ ejvr, err := bsonrw.NewExtJSONValueReader(bytes.NewReader(data), canonical)
+ if err != nil {
+ return err
+ }
+
+ return unmarshalFromReader(bsoncodec.DecodeContext{Registry: r}, ejvr, val)
+}
+
+// UnmarshalExtJSONWithContext parses the extended JSON-encoded data using
+// DecodeContext dc and stores the result in the value pointed to by val. If val is
+// nil or not a pointer, UnmarshalWithRegistry returns InvalidUnmarshalError.
+func UnmarshalExtJSONWithContext(dc bsoncodec.DecodeContext, data []byte, canonical bool, val interface{}) error {
+ ejvr, err := bsonrw.NewExtJSONValueReader(bytes.NewReader(data), canonical)
+ if err != nil {
+ return err
+ }
+
+ return unmarshalFromReader(dc, ejvr, val)
+}
+
+func unmarshalFromReader(dc bsoncodec.DecodeContext, vr bsonrw.ValueReader, val interface{}) error {
+ dec := decPool.Get().(*Decoder)
+ defer decPool.Put(dec)
+
+ err := dec.Reset(vr)
+ if err != nil {
+ return err
+ }
+ err = dec.SetContext(dc)
+ if err != nil {
+ return err
+ }
+
+ return dec.Decode(val)
+}