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// 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 "go.mongodb.org/mongo-driver/bson"
import (
"go.mongodb.org/mongo-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 is an ordered representation of a BSON document. This type should be used when the order of the elements matters,
// such as MongoDB command documents. If the order of the elements does not matter, an M should be used instead.
//
// A D should not be constructed with duplicate key names, as that can cause undefined server behavior.
//
// Example usage:
//
// bson.D{{"foo", "bar"}, {"hello", "world"}, {"pi", 3.14159}}
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 representation of a BSON document. This type should be used when the order of the elements does not
// matter. This type is handled as a regular map[string]interface{} when encoding and decoding. Elements will be
// serialized in an undefined, random order. If the order of the elements matters, a D should be used instead.
//
// Example usage:
//
// bson.M{"foo": "bar", "hello": "world", "pi": 3.14159}
type M = primitive.M
// An A is an ordered representation of a BSON array.
//
// Example usage:
//
// bson.A{"bar", "world", 3.14159, bson.D{{"qux", 12345}}}
type A = primitive.A