AppendType (bsoncore/bsoncore.go)

Provides low-level primitives for encoding and decoding BSON types, keys, and headers within byte buffers for efficient data serialization.

// Source: https://github.com/mongodb/mongo-go-driver | License: Apache-2.0 | Copyright You must retain, in the Source form of any Derivative Works
// Provided via justclaw.it.com; keep this notice with the code.
// 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 bsoncore

import (
	"bytes"
	"encoding/binary"
	"fmt"
	"math"
	"strconv"
	"strings"
	"time"

	"go.mongodb.org/mongo-driver/v2/internal/binaryutil"
)

const (
	// EmptyDocumentLength is the length of a document that has been started/ended but has no elements.
	EmptyDocumentLength = 5
	// nullTerminator is a s

... (truncated -- full source via MCP)