enso/app/gui2/shared/binaryProtocol.ts

// automatically generated by the FlatBuffers compiler (flatc version 1.12.0),
// and modified by inlining the `flatbuffers` dependency and switching from manual decoding
// to a `DataView`.
// Helper classes copied from https://github.com/google/flatbuffers,
// which is licensed under the Apache License, Version 2.0:
/*

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   Copyright 2014 Google Inc.

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

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const SIZEOF_SHORT = 2
const SIZEOF_INT = 4
const FILE_IDENTIFIER_LENGTH = 4
const SIZE_PREFIX_LENGTH = 4
const TEXT_ENCODER = new TextEncoder()
const TEXT_DECODER = new TextDecoder()
const NULL_PTR = 0

type Offset = number
type CreateOffset = ((builder: Builder) => Offset) | null | undefined

interface IGeneratedObject {
  pack(builder: Builder): Offset
}

export type Table = {
  bb: ByteBuffer
  bbPos: number
}

export class Builder {
  private bb: ByteBuffer
  private space: number
  private minAlignment = 1
  private vtable: number[] | null = null
  private vtableInUse = 0
  private isNested = false
  private objectStart = 0
  private vtables: number[] = []
  private vectorNumElems = 0
  private _forceDefaults = false
  private stringMaps: Map<string | Uint8Array, Offset> | null = null

  constructor(initialSize?: number) {
    initialSize ??= 1024
    this.bb = new ByteBuffer(new ArrayBuffer(initialSize))
    this.space = initialSize
  }

  clear(): void {
    this.bb.position = 0
    this.space = this.bb.view.byteLength
    this.minAlignment = 1
    this.vtable = null
    this.vtableInUse = 0
    this.isNested = false
    this.objectStart = 0
    this.vtables = []
    this.vectorNumElems = 0
    this._forceDefaults = false
    this.stringMaps = null
  }

  /**
   * In order to save space, fields that are set to their default value
   * don't get serialized into the buffer. Forcing defaults provides a
   * way to manually disable this optimization.
   *
   * @param forceDefaults true always serializes default values
   */
  forceDefaults(forceDefaults: boolean): void {
    this._forceDefaults = forceDefaults
  }

  toArrayBuffer(): ArrayBuffer {
    return this.bb.view.buffer.slice(this.bb.position, this.bb.position + this.offset())
  }

  prep(size: number, additionalBytes: number): void {
    if (size > this.minAlignment) {
      this.minAlignment = size
    }

    const alignSize = (~(this.bb.view.byteLength - this.space + additionalBytes) + 1) & (size - 1)

    while (this.space < alignSize + size + additionalBytes) {
      const oldBufSize = this.bb.view.byteLength
      Builder.growByteBuffer(this.bb)
      this.space += this.bb.view.byteLength - oldBufSize
    }

    this.pad(alignSize)
  }

  pad(byteSize: number): void {
    for (let i = 0; i < byteSize; i++) {
      this.bb.view.setInt8(--this.space, 0)
    }
  }

  writeInt8(value: number): void {
    this.bb.view.setInt8((this.space -= 1), value)
  }

  writeInt16(value: number): void {
    this.bb.view.setInt16((this.space -= 2), value, true)
  }

  writeInt32(value: number): void {
    this.bb.view.setInt32((this.space -= 4), value, true)
  }

  writeInt64(value: bigint): void {
    this.bb.view.setBigInt64((this.space -= 8), value, true)
  }

  writeFloat32(value: number): void {
    this.bb.view.setFloat32((this.space -= 4), value, true)
  }

  writeFloat64(value: number): void {
    this.bb.view.setFloat64((this.space -= 8), value, true)
  }

  addInt8(value: number): void {
    this.prep(1, 0)
    this.writeInt8(value)
  }

  addInt16(value: number): void {
    this.prep(2, 0)
    this.writeInt16(value)
  }

  addInt32(value: number): void {
    this.prep(4, 0)
    this.writeInt32(value)
  }

  addInt64(value: bigint): void {
    this.prep(8, 0)
    this.writeInt64(value)
  }

  addFloat32(value: number): void {
    this.prep(4, 0)
    this.writeFloat32(value)
  }

  addFloat64(value: number): void {
    this.prep(8, 0)
    this.writeFloat64(value)
  }

  addFieldInt8(voffset: number, value: number, defaultValue: number | null): void {
    if (this._forceDefaults || value != defaultValue) {
      this.addInt8(value)
      this.slot(voffset)
    }
  }

  addFieldInt16(voffset: number, value: number, defaultValue: number | null): void {
    if (this._forceDefaults || value != defaultValue) {
      this.addInt16(value)
      this.slot(voffset)
    }
  }

  addFieldInt32(voffset: number, value: number, defaultValue: number | null): void {
    if (this._forceDefaults || value != defaultValue) {
      this.addInt32(value)
      this.slot(voffset)
    }
  }

  addFieldInt64(voffset: number, value: bigint, defaultValue: bigint | null): void {
    if (this._forceDefaults || value !== defaultValue) {
      this.addInt64(value)
      this.slot(voffset)
    }
  }

  addFieldFloat32(voffset: number, value: number, defaultValue: number | null): void {
    if (this._forceDefaults || value != defaultValue) {
      this.addFloat32(value)
      this.slot(voffset)
    }
  }

  addFieldFloat64(voffset: number, value: number, defaultValue: number | null): void {
    if (this._forceDefaults || value != defaultValue) {
      this.addFloat64(value)
      this.slot(voffset)
    }
  }

  addFieldOffset(voffset: number, value: Offset, defaultValue: Offset): void {
    if (this._forceDefaults || value != defaultValue) {
      this.addOffset(value)
      this.slot(voffset)
    }
  }

  addFieldStruct(voffset: number, value: Offset, defaultValue: Offset): void {
    if (value != defaultValue) {
      this.nested(value)
      this.slot(voffset)
    }
  }

  nested(obj: Offset): void {
    if (obj != this.offset()) {
      throw new TypeError('FlatBuffers: struct must be serialized inline.')
    }
  }

  notNested(): void {
    if (this.isNested) {
      throw new TypeError('FlatBuffers: object serialization must not be nested.')
    }
  }

  slot(voffset: number): void {
    if (this.vtable !== null) this.vtable[voffset] = this.offset()
  }

  offset(): Offset {
    return this.bb.view.byteLength - this.space
  }

  static growByteBuffer(bb: ByteBuffer): void {
    const oldBufSize = bb.view.byteLength
    // Ensure we don't grow beyond what fits in an int.
    if (oldBufSize & 0xc0000000) {
      throw new globalThis.Error('FlatBuffers: cannot grow buffer beyond 2 gigabytes.')
    }
    const newBufSize = oldBufSize << 1
    const newBuffer = new ArrayBuffer(newBufSize)
    bb.position = newBufSize - oldBufSize
    new Uint8Array(newBuffer).set(new Uint8Array(bb.view.buffer), bb.position)
    bb.view = new DataView(newBuffer)
  }

  addOffset(offset: Offset): void {
    this.prep(SIZEOF_INT, 0) // Ensure alignment is already done.
    this.writeInt32(this.offset() - offset + SIZEOF_INT)
  }

  startObject(numfields: number): void {
    this.notNested()
    if (this.vtable == null) {
      this.vtable = []
    }
    this.vtableInUse = numfields
    for (let i = 0; i < numfields; i++) {
      this.vtable[i] = 0 // This will push additional elements as needed
    }
    this.isNested = true
    this.objectStart = this.offset()
  }

  endObject(): Offset {
    if (this.vtable == null || !this.isNested) {
      throw new globalThis.Error('FlatBuffers: endObject called without startObject')
    }

    this.addInt32(0)
    const vtableloc = this.offset()

    // Trim trailing zeroes.
    let i = this.vtableInUse - 1
    // eslint-disable-next-line no-empty
    for (; i >= 0 && this.vtable[i] === 0; i -= 1) {}
    const trimmedSize = i + 1

    // Write out the current vtable.
    for (; i >= 0; i -= 1) {
      // Offset relative to the start of the table.
      this.addInt16(this.vtable[i] !== 0 ? vtableloc - this.vtable[i]! : 0)
    }

    const standardFields = 2 // The fields below:
    this.addInt16(vtableloc - this.objectStart)
    const len = (trimmedSize + standardFields) * SIZEOF_SHORT
    this.addInt16(len)

    // Search for an existing vtable that matches the current one.
    let existingVtable = 0
    const vt1 = this.space
    outerLoop: for (i = 0; i < this.vtables.length; i++) {
      const vt2 = this.bb.view.byteLength - this.vtables[i]!
      if (len == this.bb.view.getInt16(vt2, true)) {
        for (let j = SIZEOF_SHORT; j < len; j += SIZEOF_SHORT) {
          if (this.bb.view.getInt16(vt1 + j, true) != this.bb.view.getInt16(vt2 + j, true)) {
            continue outerLoop
          }
        }
        existingVtable = this.vtables[i]!
        break
      }
    }

    if (existingVtable) {
      // Found a match:
      // Remove the current vtable.
      this.space = this.bb.view.byteLength - vtableloc

      // Point table to existing vtable.
      this.bb.view.setInt32(this.space, existingVtable - vtableloc, true)
    } else {
      // No match:
      // Add the location of the current vtable to the list of vtables.
      this.vtables.push(this.offset())

      // Point table to current vtable.
      this.bb.view.setInt32(this.bb.view.byteLength - vtableloc, this.offset() - vtableloc, true)
    }

    this.isNested = false
    return vtableloc
  }

  finish(rootTable: Offset, fileIdentifier?: string, shouldIncludeSizePrefix?: boolean): Builder {
    const sizePrefix = shouldIncludeSizePrefix ? SIZE_PREFIX_LENGTH : 0
    if (fileIdentifier) {
      this.prep(this.minAlignment, SIZEOF_INT + FILE_IDENTIFIER_LENGTH + sizePrefix)
      if (fileIdentifier.length != FILE_IDENTIFIER_LENGTH) {
        throw new TypeError('FlatBuffers: file identifier must be length ' + FILE_IDENTIFIER_LENGTH)
      }
      for (let i = FILE_IDENTIFIER_LENGTH - 1; i >= 0; i -= 1) {
        this.writeInt8(fileIdentifier.charCodeAt(i))
      }
    }
    this.prep(this.minAlignment, SIZEOF_INT + sizePrefix)
    this.addOffset(rootTable)
    if (sizePrefix) {
      this.addInt32(this.bb.view.byteLength - this.space)
    }
    this.bb.position = this.space
    return this
  }

  finishSizePrefixed(rootTable: Offset, fileIdentifier?: string): Builder {
    this.finish(rootTable, fileIdentifier, true)
    return this
  }

  requiredField(table: Offset, field: number): void {
    const tableStart = this.bb.view.byteLength - table
    const vtableStart = tableStart - this.bb.view.getInt32(tableStart, true)
    const ok =
      field < this.bb.view.getInt16(vtableStart, true) &&
      this.bb.view.getInt16(vtableStart + field, true) != 0
    // If this fails, the caller will show what field needs to be set.
    if (!ok) {
      throw new TypeError('FlatBuffers: field ' + field + ' must be set')
    }
  }

  startVector(elemSize: number, numElems: number, alignment: number): void {
    this.notNested()
    this.vectorNumElems = numElems
    this.prep(SIZEOF_INT, elemSize * numElems)
    this.prep(alignment, elemSize * numElems) // Just in case alignment > int.
  }

  endVector(): Offset {
    this.writeInt32(this.vectorNumElems)
    return this.offset()
  }

  createSharedString(s: string | Uint8Array): Offset {
    if (!s) {
      return 0
    }
    if (!this.stringMaps) {
      this.stringMaps = new Map()
    }
    const value = this.stringMaps.get(s)
    if (value != null) {
      return value
    }
    const offset = this.createString(s)
    this.stringMaps.set(s, offset)
    return offset
  }

  createString(s: string | Uint8Array | ArrayBuffer | null | undefined): Offset {
    if (s === null || s === undefined) {
      return 0
    }

    let utf8: string | Uint8Array | number[]
    if (s instanceof Uint8Array) {
      utf8 = s
    } else if (s instanceof ArrayBuffer) {
      utf8 = new Uint8Array(s)
    } else {
      utf8 = TEXT_ENCODER.encode(s)
    }

    this.addInt8(0)
    this.startVector(1, utf8.length, 1)
    this.bb.position = this.space -= utf8.length
    for (let i = 0, offset = this.space, bytes = this.bb.view; i < utf8.length; i++) {
      bytes.setUint8(offset++, utf8[i]!)
    }
    return this.endVector()
  }

  createObjectOffset(obj: string | IGeneratedObject | null): Offset {
    if (obj === null) {
      return 0
    }

    if (typeof obj === 'string') {
      return this.createString(obj)
    } else {
      return obj.pack(this)
    }
  }

  createObjectOffsetList(list: (string | IGeneratedObject)[]): Offset[] {
    const ret: number[] = []

    for (let i = 0; i < list.length; ++i) {
      const val = list[i]

      if (val != null) {
        ret.push(this.createObjectOffset(val))
      } else {
        throw new TypeError('FlatBuffers: Argument for createObjectOffsetList cannot contain null.')
      }
    }

    return ret
  }

  createStructOffsetList(
    list: (string | IGeneratedObject)[],
    startFunc: (builder: Builder, length: number) => void,
  ): Offset {
    startFunc(this, list.length)
    this.createObjectOffsetList(list.slice().reverse())
    return this.endVector()
  }
}

export class ByteBuffer {
  position = 0
  view: DataView

  constructor(buffer: ArrayBufferLike) {
    this.view = new DataView(buffer)
  }

  offset(bbPos: number, vtableOffset: number): Offset {
    const vtable = bbPos - this.view.getInt32(bbPos, true)
    return vtableOffset < this.view.getInt16(vtable, true)
      ? this.view.getInt16(vtable + vtableOffset, true)
      : 0
  }

  union(t: Table, offset: number): Table {
    t.bbPos = offset + this.view.getInt32(offset, true)
    t.bb = this
    return t
  }

  rawMessage(offset: number): ArrayBuffer {
    offset += this.view.getInt32(offset, true)
    const length = this.view.getInt32(offset, true)
    offset += SIZEOF_INT
    return this.view.buffer.slice(offset, offset + length)
  }

  message(offset: number): string {
    return TEXT_DECODER.decode(this.rawMessage(offset))
  }

  indirect(offset: Offset): Offset {
    return offset + this.view.getInt32(offset, true)
  }

  vector(offset: Offset): Offset {
    return offset + this.view.getInt32(offset, true) + SIZEOF_INT // data starts after the length
  }

  vectorLength(offset: Offset): Offset {
    return this.view.getInt32(offset + this.view.getInt32(offset, true), true)
  }
}

export enum InboundPayload {
  NONE = 0,
  INIT_SESSION_CMD = 1,
  WRITE_FILE_CMD = 2,
  READ_FILE_CMD = 3,
  WRITE_BYTES_CMD = 4,
  READ_BYTES_CMD = 5,
  CHECKSUM_BYTES_CMD = 6,
}

export enum OutboundPayload {
  NONE = 0,
  ERROR = 1,
  SUCCESS = 2,
  VISUALIZATION_UPDATE = 3,
  FILE_CONTENTS_REPLY = 4,
  WRITE_BYTES_REPLY = 5,
  READ_BYTES_REPLY = 6,
  CHECKSUM_BYTES_REPLY = 7,
}

export enum ErrorPayload {
  NONE = 0,
  READ_OOB = 1,
}

export class InboundMessage implements Table {
  bb!: ByteBuffer
  bbPos: number = 0
  init(i: number, bb: ByteBuffer): InboundMessage {
    this.bbPos = i
    this.bb = bb
    return this
  }

  static getRootAsInboundMessage(bb: ByteBuffer, obj?: InboundMessage): InboundMessage {
    return (obj ?? new InboundMessage()).init(bb.view.getInt32(bb.position, true) + bb.position, bb)
  }

  static getSizePrefixedRootAsInboundMessage(bb: ByteBuffer, obj?: InboundMessage): InboundMessage {
    bb.position += SIZE_PREFIX_LENGTH
    return (obj ?? new InboundMessage()).init(bb.view.getInt32(bb.position, true) + bb.position, bb)
  }

  messageId(obj?: EnsoUUID): EnsoUUID | null {
    const offset = this.bb.offset(this.bbPos, 4)
    return offset ? (obj ?? new EnsoUUID()).init(this.bbPos + offset, this.bb!) : null
  }

  correlationId(obj?: EnsoUUID): EnsoUUID | null {
    const offset = this.bb.offset(this.bbPos, 6)
    return offset ? (obj ?? new EnsoUUID()).init(this.bbPos + offset, this.bb!) : null
  }

  payloadType(): InboundPayload {
    const offset = this.bb.offset(this.bbPos, 8)
    return offset ? this.bb.view.getUint8(this.bbPos + offset) : InboundPayload.NONE
  }

  payload<T extends Table>(obj: T): T | null {
    const offset = this.bb.offset(this.bbPos, 10)
    // @ts-expect-error
    return offset ? this.bb.union(obj, this.bbPos + offset) : null
  }

  static startInboundMessage(builder: Builder) {
    builder.startObject(4)
  }

  static addMessageId(builder: Builder, messageIdOffset: Offset) {
    builder.addFieldStruct(0, messageIdOffset, 0)
  }

  static addCorrelationId(builder: Builder, correlationIdOffset: Offset) {
    builder.addFieldStruct(1, correlationIdOffset, 0)
  }

  static addPayloadType(builder: Builder, payloadType: InboundPayload) {
    builder.addFieldInt8(2, payloadType, InboundPayload.NONE)
  }

  static addPayload(builder: Builder, payloadOffset: Offset) {
    builder.addFieldOffset(3, payloadOffset, 0)
  }

  static endInboundMessage(builder: Builder): Offset {
    const offset = builder.endObject()
    builder.requiredField(offset, 4) // messageId
    builder.requiredField(offset, 10) // payload
    return offset
  }

  static createInboundMessage(
    builder: Builder,
    createMessageId: CreateOffset,
    createCorrelationId: CreateOffset,
    payloadType: InboundPayload,
    payloadOffset: Offset,
  ): Offset {
    InboundMessage.startInboundMessage(builder)
    InboundMessage.addMessageId(builder, createMessageId?.(builder) ?? NULL_PTR)
    InboundMessage.addCorrelationId(builder, createCorrelationId?.(builder) ?? NULL_PTR)
    InboundMessage.addPayloadType(builder, payloadType)
    InboundMessage.addPayload(builder, payloadOffset)
    return InboundMessage.endInboundMessage(builder)
  }
}

export class OutboundMessage implements Table {
  bb!: ByteBuffer
  bbPos: number = 0
  init(i: number, bb: ByteBuffer): OutboundMessage {
    this.bbPos = i
    this.bb = bb
    return this
  }

  static getRootAsOutboundMessage(bb: ByteBuffer, obj?: OutboundMessage): OutboundMessage {
    return (obj ?? new OutboundMessage()).init(
      bb.view.getInt32(bb.position, true) + bb.position,
      bb,
    )
  }

  static getSizePrefixedRootAsOutboundMessage(
    bb: ByteBuffer,
    obj?: OutboundMessage,
  ): OutboundMessage {
    bb.position += SIZE_PREFIX_LENGTH
    return (obj ?? new OutboundMessage()).init(
      bb.view.getInt32(bb.position, true) + bb.position,
      bb,
    )
  }

  messageId(obj?: EnsoUUID): EnsoUUID | null {
    const offset = this.bb.offset(this.bbPos, 4)
    return offset ? (obj ?? new EnsoUUID()).init(this.bbPos + offset, this.bb!) : null
  }

  correlationId(obj?: EnsoUUID): EnsoUUID | null {
    const offset = this.bb.offset(this.bbPos, 6)
    return offset ? (obj ?? new EnsoUUID()).init(this.bbPos + offset, this.bb!) : null
  }

  payloadType(): OutboundPayload {
    const offset = this.bb.offset(this.bbPos, 8)
    return offset ? this.bb.view.getUint8(this.bbPos + offset) : OutboundPayload.NONE
  }

  payload<T extends Table>(obj: T): T | null {
    const offset = this.bb.offset(this.bbPos, 10)
    // @ts-expect-error
    return offset ? this.bb.union(obj, this.bbPos + offset) : null
  }

  static startOutboundMessage(builder: Builder) {
    builder.startObject(4)
  }

  static addMessageId(builder: Builder, messageIdOffset: Offset) {
    builder.addFieldStruct(0, messageIdOffset, 0)
  }

  static addCorrelationId(builder: Builder, correlationIdOffset: Offset) {
    builder.addFieldStruct(1, correlationIdOffset, 0)
  }

  static addPayloadType(builder: Builder, payloadType: OutboundPayload) {
    builder.addFieldInt8(2, payloadType, OutboundPayload.NONE)
  }

  static addPayload(builder: Builder, payloadOffset: Offset) {
    builder.addFieldOffset(3, payloadOffset, 0)
  }

  static endOutboundMessage(builder: Builder): Offset {
    const offset = builder.endObject()
    builder.requiredField(offset, 4) // messageId
    builder.requiredField(offset, 10) // payload
    return offset
  }

  static createOutboundMessage(
    builder: Builder,
    createMessageId: CreateOffset,
    createCorrelationId: CreateOffset,
    payloadType: OutboundPayload,
    payloadOffset: Offset,
  ): Offset {
    OutboundMessage.startOutboundMessage(builder)
    OutboundMessage.addMessageId(builder, createMessageId?.(builder) ?? NULL_PTR)
    OutboundMessage.addCorrelationId(builder, createCorrelationId?.(builder) ?? NULL_PTR)
    OutboundMessage.addPayloadType(builder, payloadType)
    OutboundMessage.addPayload(builder, payloadOffset)
    return OutboundMessage.endOutboundMessage(builder)
  }
}

export class EnsoUUID implements Table {
  bb!: ByteBuffer
  bbPos: number = 0
  init(i: number, bb: ByteBuffer): EnsoUUID {
    this.bbPos = i
    this.bb = bb
    return this
  }

  leastSigBits(): bigint {
    return this.bb.view.getBigUint64(this.bbPos, true)
  }

  mostSigBits(): bigint {
    return this.bb.view.getBigUint64(this.bbPos + 8, true)
  }

  static createEnsoUUID(builder: Builder, leastSigBits: bigint, mostSigBits: bigint): Offset {
    builder.prep(8, 16)
    builder.writeInt64(mostSigBits)
    builder.writeInt64(leastSigBits)
    return builder.offset()
  }
}

export class Error implements Table {
  bb!: ByteBuffer
  bbPos: number = 0
  init(i: number, bb: ByteBuffer): Error {
    this.bbPos = i
    this.bb = bb
    return this
  }

  static getRootAsError(bb: ByteBuffer, obj?: Error): Error {
    return (obj ?? new Error()).init(bb.view.getInt32(bb.position, true) + bb.position, bb)
  }

  static getSizePrefixedRootAsError(bb: ByteBuffer, obj?: Error): Error {
    bb.position += SIZE_PREFIX_LENGTH
    return (obj ?? new Error()).init(bb.view.getInt32(bb.position, true) + bb.position, bb)
  }

  code(): number {
    const offset = this.bb.offset(this.bbPos, 4)
    return offset ? this.bb.view.getInt32(this.bbPos + offset, true) : 0
  }

  rawMessage(): ArrayBuffer | null {
    const offset = this.bb.offset(this.bbPos, 6)
    return offset ? this.bb.rawMessage(this.bbPos + offset) : null
  }

  message(): string | null {
    const rawMessage = this.rawMessage()
    return rawMessage ? TEXT_DECODER.decode(rawMessage) : null
  }

  dataType(): ErrorPayload {
    const offset = this.bb.offset(this.bbPos, 8)
    return offset ? this.bb.view.getUint8(this.bbPos + offset) : ErrorPayload.NONE
  }

  data<T extends Table>(obj: T): T | null {
    const offset = this.bb.offset(this.bbPos, 10)
    // @ts-expect-error
    return offset ? this.bb.union(obj, this.bbPos + offset) : null
  }

  static startError(builder: Builder) {
    builder.startObject(4)
  }

  static addCode(builder: Builder, code: number) {
    builder.addFieldInt32(0, code, 0)
  }

  static addMessage(builder: Builder, messageOffset: Offset) {
    builder.addFieldOffset(1, messageOffset, 0)
  }

  static addDataType(builder: Builder, dataType: ErrorPayload) {
    builder.addFieldInt8(2, dataType, ErrorPayload.NONE)
  }

  static addData(builder: Builder, dataOffset: Offset) {
    builder.addFieldOffset(3, dataOffset, 0)
  }

  static endError(builder: Builder): Offset {
    const offset = builder.endObject()
    builder.requiredField(offset, 6) // message
    return offset
  }

  static createError(
    builder: Builder,
    code: number,
    messageOffset: Offset,
    dataType: ErrorPayload,
    dataOffset: Offset,
  ): Offset {
    Error.startError(builder)
    Error.addCode(builder, code)
    Error.addMessage(builder, messageOffset)
    Error.addDataType(builder, dataType)
    Error.addData(builder, dataOffset)
    return Error.endError(builder)
  }
}

export class ReadOutOfBoundsError implements Table {
  bb!: ByteBuffer
  bbPos: number = 0
  init(i: number, bb: ByteBuffer): ReadOutOfBoundsError {
    this.bbPos = i
    this.bb = bb
    return this
  }

  static getRootAsReadOutOfBoundsError(
    bb: ByteBuffer,
    obj?: ReadOutOfBoundsError,
  ): ReadOutOfBoundsError {
    return (obj ?? new ReadOutOfBoundsError()).init(
      bb.view.getInt32(bb.position, true) + bb.position,
      bb,
    )
  }

  static getSizePrefixedRootAsReadOutOfBoundsError(
    bb: ByteBuffer,
    obj?: ReadOutOfBoundsError,
  ): ReadOutOfBoundsError {
    bb.position += SIZE_PREFIX_LENGTH
    return (obj ?? new ReadOutOfBoundsError()).init(
      bb.view.getInt32(bb.position, true) + bb.position,
      bb,
    )
  }

  fileLength(): bigint {
    const offset = this.bb.offset(this.bbPos, 4)
    return offset ? this.bb.view.getBigUint64(this.bbPos + offset, true) : 0n
  }

  static startReadOutOfBoundsError(builder: Builder) {
    builder.startObject(1)
  }

  static addFileLength(builder: Builder, fileLength: bigint) {
    builder.addFieldInt64(0, fileLength, 0n)
  }

  static endReadOutOfBoundsError(builder: Builder): Offset {
    const offset = builder.endObject()
    return offset
  }

  static createReadOutOfBoundsError(builder: Builder, fileLength: bigint): Offset {
    ReadOutOfBoundsError.startReadOutOfBoundsError(builder)
    ReadOutOfBoundsError.addFileLength(builder, fileLength)
    return ReadOutOfBoundsError.endReadOutOfBoundsError(builder)
  }
}

export class None implements Table {
  bb!: ByteBuffer
  bbPos: number = 0
  init(i: number, bb: ByteBuffer): None {
    this.bbPos = i
    this.bb = bb
    return this
  }
}

export class Success implements Table {
  bb!: ByteBuffer
  bbPos: number = 0
  init(i: number, bb: ByteBuffer): Success {
    this.bbPos = i
    this.bb = bb
    return this
  }

  static getRootAsSuccess(bb: ByteBuffer, obj?: Success): Success {
    return (obj ?? new Success()).init(bb.view.getInt32(bb.position, true) + bb.position, bb)
  }

  static getSizePrefixedRootAsSuccess(bb: ByteBuffer, obj?: Success): Success {
    bb.position += SIZE_PREFIX_LENGTH
    return (obj ?? new Success()).init(bb.view.getInt32(bb.position, true) + bb.position, bb)
  }

  static startSuccess(builder: Builder) {
    builder.startObject(0)
  }

  static endSuccess(builder: Builder): Offset {
    const offset = builder.endObject()
    return offset
  }

  static createSuccess(builder: Builder): Offset {
    Success.startSuccess(builder)
    return Success.endSuccess(builder)
  }
}

export class InitSessionCommand implements Table {
  bb!: ByteBuffer
  bbPos: number = 0
  init(i: number, bb: ByteBuffer): InitSessionCommand {
    this.bbPos = i
    this.bb = bb
    return this
  }

  static getRootAsInitSessionCommand(bb: ByteBuffer, obj?: InitSessionCommand): InitSessionCommand {
    return (obj ?? new InitSessionCommand()).init(
      bb.view.getInt32(bb.position, true) + bb.position,
      bb,
    )
  }

  static getSizePrefixedRootAsInitSessionCommand(
    bb: ByteBuffer,
    obj?: InitSessionCommand,
  ): InitSessionCommand {
    bb.position += SIZE_PREFIX_LENGTH
    return (obj ?? new InitSessionCommand()).init(
      bb.view.getInt32(bb.position, true) + bb.position,
      bb,
    )
  }

  identifier(obj?: EnsoUUID): EnsoUUID | null {
    const offset = this.bb.offset(this.bbPos, 4)
    return offset ? (obj ?? new EnsoUUID()).init(this.bbPos + offset, this.bb!) : null
  }

  static startInitSessionCommand(builder: Builder) {
    builder.startObject(1)
  }

  static addIdentifier(builder: Builder, identifierOffset: Offset) {
    builder.addFieldStruct(0, identifierOffset, 0)
  }

  static endInitSessionCommand(builder: Builder): Offset {
    const offset = builder.endObject()
    builder.requiredField(offset, 4) // identifier
    return offset
  }

  static createInitSessionCommand(builder: Builder, createIdentifier: CreateOffset): Offset {
    InitSessionCommand.startInitSessionCommand(builder)
    InitSessionCommand.addIdentifier(builder, createIdentifier?.(builder) ?? NULL_PTR)
    return InitSessionCommand.endInitSessionCommand(builder)
  }
}

export class VisualizationContext implements Table {
  bb!: ByteBuffer
  bbPos: number = 0
  init(i: number, bb: ByteBuffer): VisualizationContext {
    this.bbPos = i
    this.bb = bb
    return this
  }

  static getRootAsVisualizationContext(
    bb: ByteBuffer,
    obj?: VisualizationContext,
  ): VisualizationContext {
    return (obj ?? new VisualizationContext()).init(
      bb.view.getInt32(bb.position, true) + bb.position,
      bb,
    )
  }

  static getSizePrefixedRootAsVisualizationContext(
    bb: ByteBuffer,
    obj?: VisualizationContext,
  ): VisualizationContext {
    bb.position += SIZE_PREFIX_LENGTH
    return (obj ?? new VisualizationContext()).init(
      bb.view.getInt32(bb.position, true) + bb.position,
      bb,
    )
  }

  visualizationId(obj?: EnsoUUID): EnsoUUID | null {
    const offset = this.bb.offset(this.bbPos, 4)
    return offset ? (obj ?? new EnsoUUID()).init(this.bbPos + offset, this.bb!) : null
  }

  contextId(obj?: EnsoUUID): EnsoUUID | null {
    const offset = this.bb.offset(this.bbPos, 6)
    return offset ? (obj ?? new EnsoUUID()).init(this.bbPos + offset, this.bb!) : null
  }

  expressionId(obj?: EnsoUUID): EnsoUUID | null {
    const offset = this.bb.offset(this.bbPos, 8)
    return offset ? (obj ?? new EnsoUUID()).init(this.bbPos + offset, this.bb!) : null
  }

  static startVisualizationContext(builder: Builder) {
    builder.startObject(3)
  }

  static addVisualizationId(builder: Builder, visualizationIdOffset: Offset) {
    builder.addFieldStruct(0, visualizationIdOffset, 0)
  }

  static addContextId(builder: Builder, contextIdOffset: Offset) {
    builder.addFieldStruct(1, contextIdOffset, 0)
  }

  static addExpressionId(builder: Builder, expressionIdOffset: Offset) {
    builder.addFieldStruct(2, expressionIdOffset, 0)
  }

  static endVisualizationContext(builder: Builder): Offset {
    const offset = builder.endObject()
    builder.requiredField(offset, 4) // visualizationId
    builder.requiredField(offset, 6) // contextId
    builder.requiredField(offset, 8) // expressionId
    return offset
  }

  static createVisualizationContext(
    builder: Builder,
    createVisualizationId: CreateOffset,
    createContextId: CreateOffset,
    createExpressionId: CreateOffset,
  ): Offset {
    VisualizationContext.startVisualizationContext(builder)
    VisualizationContext.addVisualizationId(builder, createVisualizationId?.(builder) ?? NULL_PTR)
    VisualizationContext.addContextId(builder, createContextId?.(builder) ?? NULL_PTR)
    VisualizationContext.addExpressionId(builder, createExpressionId?.(builder) ?? NULL_PTR)
    return VisualizationContext.endVisualizationContext(builder)
  }
}

export class VisualizationUpdate implements Table {
  bb!: ByteBuffer
  bbPos: number = 0
  init(i: number, bb: ByteBuffer): VisualizationUpdate {
    this.bbPos = i
    this.bb = bb
    return this
  }

  static getRootAsVisualizationUpdate(
    bb: ByteBuffer,
    obj?: VisualizationUpdate,
  ): VisualizationUpdate {
    return (obj ?? new VisualizationUpdate()).init(
      bb.view.getInt32(bb.position, true) + bb.position,
      bb,
    )
  }

  static getSizePrefixedRootAsVisualizationUpdate(
    bb: ByteBuffer,
    obj?: VisualizationUpdate,
  ): VisualizationUpdate {
    bb.position += SIZE_PREFIX_LENGTH
    return (obj ?? new VisualizationUpdate()).init(
      bb.view.getInt32(bb.position, true) + bb.position,
      bb,
    )
  }

  visualizationContext(obj?: VisualizationContext): VisualizationContext | null {
    const offset = this.bb.offset(this.bbPos, 4)
    return offset
      ? (obj ?? new VisualizationContext()).init(this.bb.indirect(this.bbPos + offset), this.bb!)
      : null
  }

  data(index: number): number | null {
    const offset = this.bb.offset(this.bbPos, 6)
    return offset ? this.bb.view.getUint8(this.bb.vector(this.bbPos + offset) + index) : 0
  }

  dataLength(): number {
    const offset = this.bb.offset(this.bbPos, 6)
    return offset ? this.bb.vectorLength(this.bbPos + offset) : 0
  }

  dataArray(): Uint8Array | null {
    const offset = this.bb.offset(this.bbPos, 6)
    return offset
      ? new Uint8Array(
          this.bb.view.buffer,
          this.bb.view.byteOffset + this.bb.vector(this.bbPos + offset),
          this.bb.vectorLength(this.bbPos + offset),
        )
      : null
  }

  dataString(): string | null {
    const buffer = this.dataArray()
    return buffer != null ? TEXT_DECODER.decode(buffer) : null
  }

  static startVisualizationUpdate(builder: Builder) {
    builder.startObject(2)
  }

  static addVisualizationContext(builder: Builder, visualizationContextOffset: Offset) {
    builder.addFieldOffset(0, visualizationContextOffset, 0)
  }

  static addData(builder: Builder, dataOffset: Offset) {
    builder.addFieldOffset(1, dataOffset, 0)
  }

  static createDataVector(builder: Builder, data: number[] | Uint8Array): Offset {
    builder.startVector(1, data.length, 1)
    // An iterator is more type-safe, but less performant.
    for (let i = data.length - 1; i >= 0; i -= 1) {
      builder.addInt8(data[i]!)
    }
    return builder.endVector()
  }

  static startDataVector(builder: Builder, numElems: number) {
    builder.startVector(1, numElems, 1)
  }

  static endVisualizationUpdate(builder: Builder): Offset {
    const offset = builder.endObject()
    builder.requiredField(offset, 4) // visualizationContext
    builder.requiredField(offset, 6) // data
    return offset
  }

  static createVisualizationUpdate(
    builder: Builder,
    visualizationContextOffset: Offset,
    dataOffset: Offset,
  ): Offset {
    VisualizationUpdate.startVisualizationUpdate(builder)
    VisualizationUpdate.addVisualizationContext(builder, visualizationContextOffset)
    VisualizationUpdate.addData(builder, dataOffset)
    return VisualizationUpdate.endVisualizationUpdate(builder)
  }
}

export class Path implements Table {
  bb!: ByteBuffer
  bbPos: number = 0
  init(i: number, bb: ByteBuffer): Path {
    this.bbPos = i
    this.bb = bb
    return this
  }

  static getRootAsPath(bb: ByteBuffer, obj?: Path): Path {
    return (obj ?? new Path()).init(bb.view.getInt32(bb.position, true) + bb.position, bb)
  }

  static getSizePrefixedRootAsPath(bb: ByteBuffer, obj?: Path): Path {
    bb.position += SIZE_PREFIX_LENGTH
    return (obj ?? new Path()).init(bb.view.getInt32(bb.position, true) + bb.position, bb)
  }

  rootId(obj?: EnsoUUID): EnsoUUID | null {
    const offset = this.bb.offset(this.bbPos, 4)
    return offset ? (obj ?? new EnsoUUID()).init(this.bbPos + offset, this.bb) : null
  }

  rawSegments(index: number): ArrayBuffer {
    const offset = this.bb.offset(this.bbPos, 6)
    return offset
      ? this.bb.rawMessage(this.bb.vector(this.bbPos + offset) + index * 4)
      : new Uint8Array()
  }

  segments(index: number): string {
    return TEXT_DECODER.decode(this.rawSegments(index))
  }

  segmentsLength(): number {
    const offset = this.bb.offset(this.bbPos, 6)
    return offset ? this.bb.vectorLength(this.bbPos + offset) : 0
  }

  static startPath(builder: Builder) {
    builder.startObject(2)
  }

  static addRootId(builder: Builder, rootIdOffset: Offset) {
    builder.addFieldStruct(0, rootIdOffset, 0)
  }

  static addSegments(builder: Builder, segmentsOffset: Offset) {
    builder.addFieldOffset(1, segmentsOffset, 0)
  }

  static createSegmentsVector(builder: Builder, data: Offset[]): Offset {
    builder.startVector(4, data.length, 4)
    // An iterator is more type-safe, but less performant.
    for (let i = data.length - 1; i >= 0; i -= 1) {
      builder.addOffset(data[i]!)
    }
    return builder.endVector()
  }

  static startSegmentsVector(builder: Builder, numElems: number) {
    builder.startVector(4, numElems, 4)
  }

  static endPath(builder: Builder): Offset {
    const offset = builder.endObject()
    return offset
  }

  static createPath(builder: Builder, createRootId: CreateOffset, segmentsOffset: Offset): Offset {
    Path.startPath(builder)
    Path.addRootId(builder, createRootId?.(builder) ?? NULL_PTR)
    Path.addSegments(builder, segmentsOffset)
    return Path.endPath(builder)
  }
}

export class WriteFileCommand implements Table {
  bb!: ByteBuffer
  bbPos: number = 0
  init(i: number, bb: ByteBuffer): WriteFileCommand {
    this.bbPos = i
    this.bb = bb
    return this
  }

  static getRootAsWriteFileCommand(bb: ByteBuffer, obj?: WriteFileCommand): WriteFileCommand {
    return (obj ?? new WriteFileCommand()).init(
      bb.view.getInt32(bb.position, true) + bb.position,
      bb,
    )
  }

  static getSizePrefixedRootAsWriteFileCommand(
    bb: ByteBuffer,
    obj?: WriteFileCommand,
  ): WriteFileCommand {
    bb.position += SIZE_PREFIX_LENGTH
    return (obj ?? new WriteFileCommand()).init(
      bb.view.getInt32(bb.position, true) + bb.position,
      bb,
    )
  }

  path(obj?: Path): Path | null {
    const offset = this.bb.offset(this.bbPos, 4)
    return offset ? (obj ?? new Path()).init(this.bb.indirect(this.bbPos + offset), this.bb!) : null
  }

  contents(index: number): number | null {
    const offset = this.bb.offset(this.bbPos, 6)
    return offset ? this.bb.view.getUint8(this.bb.vector(this.bbPos + offset) + index) : 0
  }

  contentsLength(): number {
    const offset = this.bb.offset(this.bbPos, 6)
    return offset ? this.bb.vectorLength(this.bbPos + offset) : 0
  }

  contentsArray(): Uint8Array | null {
    const offset = this.bb.offset(this.bbPos, 6)
    return offset
      ? new Uint8Array(
          this.bb.view.buffer,
          this.bb.view.byteOffset + this.bb.vector(this.bbPos + offset),
          this.bb.vectorLength(this.bbPos + offset),
        )
      : null
  }

  static startWriteFileCommand(builder: Builder) {
    builder.startObject(2)
  }

  static addPath(builder: Builder, pathOffset: Offset) {
    builder.addFieldOffset(0, pathOffset, 0)
  }

  static addContents(builder: Builder, contentsOffset: Offset) {
    builder.addFieldOffset(1, contentsOffset, 0)
  }

  static createContentsVector(builder: Builder, data: number[] | Uint8Array): Offset {
    builder.startVector(1, data.length, 1)
    // An iterator is more type-safe, but less performant.
    for (let i = data.length - 1; i >= 0; i -= 1) {
      builder.addInt8(data[i]!)
    }
    return builder.endVector()
  }

  static startContentsVector(builder: Builder, numElems: number) {
    builder.startVector(1, numElems, 1)
  }

  static endWriteFileCommand(builder: Builder): Offset {
    const offset = builder.endObject()
    return offset
  }

  static createWriteFileCommand(
    builder: Builder,
    pathOffset: Offset,
    contentsOffset: Offset,
  ): Offset {
    WriteFileCommand.startWriteFileCommand(builder)
    WriteFileCommand.addPath(builder, pathOffset)
    WriteFileCommand.addContents(builder, contentsOffset)
    return WriteFileCommand.endWriteFileCommand(builder)
  }
}

export class ReadFileCommand implements Table {
  bb!: ByteBuffer
  bbPos: number = 0
  init(i: number, bb: ByteBuffer): ReadFileCommand {
    this.bbPos = i
    this.bb = bb
    return this
  }

  static getRootAsReadFileCommand(bb: ByteBuffer, obj?: ReadFileCommand): ReadFileCommand {
    return (obj ?? new ReadFileCommand()).init(
      bb.view.getInt32(bb.position, true) + bb.position,
      bb,
    )
  }

  static getSizePrefixedRootAsReadFileCommand(
    bb: ByteBuffer,
    obj?: ReadFileCommand,
  ): ReadFileCommand {
    bb.position += SIZE_PREFIX_LENGTH
    return (obj ?? new ReadFileCommand()).init(
      bb.view.getInt32(bb.position, true) + bb.position,
      bb,
    )
  }

  path(obj?: Path): Path | null {
    const offset = this.bb.offset(this.bbPos, 4)
    return offset ? (obj ?? new Path()).init(this.bb.indirect(this.bbPos + offset), this.bb!) : null
  }

  static startReadFileCommand(builder: Builder) {
    builder.startObject(1)
  }

  static addPath(builder: Builder, pathOffset: Offset) {
    builder.addFieldOffset(0, pathOffset, 0)
  }

  static endReadFileCommand(builder: Builder): Offset {
    const offset = builder.endObject()
    return offset
  }

  static createReadFileCommand(builder: Builder, pathOffset: Offset): Offset {
    ReadFileCommand.startReadFileCommand(builder)
    ReadFileCommand.addPath(builder, pathOffset)
    return ReadFileCommand.endReadFileCommand(builder)
  }
}

export class FileContentsReply implements Table {
  bb!: ByteBuffer
  bbPos: number = 0
  init(i: number, bb: ByteBuffer): FileContentsReply {
    this.bbPos = i
    this.bb = bb
    return this
  }

  static getRootAsFileContentsReply(bb: ByteBuffer, obj?: FileContentsReply): FileContentsReply {
    return (obj ?? new FileContentsReply()).init(
      bb.view.getInt32(bb.position, true) + bb.position,
      bb,
    )
  }

  static getSizePrefixedRootAsFileContentsReply(
    bb: ByteBuffer,
    obj?: FileContentsReply,
  ): FileContentsReply {
    bb.position += SIZE_PREFIX_LENGTH
    return (obj ?? new FileContentsReply()).init(
      bb.view.getInt32(bb.position, true) + bb.position,
      bb,
    )
  }

  contents(index: number): number | null {
    const offset = this.bb.offset(this.bbPos, 4)
    return offset ? this.bb.view.getUint8(this.bb.vector(this.bbPos + offset) + index) : 0
  }

  contentsLength(): number {
    const offset = this.bb.offset(this.bbPos, 4)
    return offset ? this.bb.vectorLength(this.bbPos + offset) : 0
  }

  contentsArray(): Uint8Array | null {
    const offset = this.bb.offset(this.bbPos, 4)
    return offset
      ? new Uint8Array(
          this.bb.view.buffer,
          this.bb.view.byteOffset + this.bb.vector(this.bbPos + offset),
          this.bb.vectorLength(this.bbPos + offset),
        )
      : null
  }

  static startFileContentsReply(builder: Builder) {
    builder.startObject(1)
  }

  static addContents(builder: Builder, contentsOffset: Offset) {
    builder.addFieldOffset(0, contentsOffset, 0)
  }

  static createContentsVector(builder: Builder, data: number[] | Uint8Array): Offset {
    builder.startVector(1, data.length, 1)
    // An iterator is more type-safe, but less performant.
    for (let i = data.length - 1; i >= 0; i -= 1) {
      builder.addInt8(data[i]!)
    }
    return builder.endVector()
  }

  static startContentsVector(builder: Builder, numElems: number) {
    builder.startVector(1, numElems, 1)
  }

  static endFileContentsReply(builder: Builder): Offset {
    const offset = builder.endObject()
    return offset
  }

  static createFileContentsReply(builder: Builder, contentsOffset: Offset): Offset {
    FileContentsReply.startFileContentsReply(builder)
    FileContentsReply.addContents(builder, contentsOffset)
    return FileContentsReply.endFileContentsReply(builder)
  }
}

export class WriteBytesCommand implements Table {
  bb!: ByteBuffer
  bbPos: number = 0
  init(i: number, bb: ByteBuffer): WriteBytesCommand {
    this.bbPos = i
    this.bb = bb
    return this
  }

  static getRootAsWriteBytesCommand(bb: ByteBuffer, obj?: WriteBytesCommand): WriteBytesCommand {
    return (obj ?? new WriteBytesCommand()).init(
      bb.view.getInt32(bb.position, true) + bb.position,
      bb,
    )
  }

  static getSizePrefixedRootAsWriteBytesCommand(
    bb: ByteBuffer,
    obj?: WriteBytesCommand,
  ): WriteBytesCommand {
    bb.position += SIZE_PREFIX_LENGTH
    return (obj ?? new WriteBytesCommand()).init(
      bb.view.getInt32(bb.position, true) + bb.position,
      bb,
    )
  }

  path(obj?: Path): Path | null {
    const offset = this.bb.offset(this.bbPos, 4)
    return offset ? (obj ?? new Path()).init(this.bb.indirect(this.bbPos + offset), this.bb!) : null
  }

  byteOffset(): bigint {
    const offset = this.bb.offset(this.bbPos, 6)
    return offset ? this.bb.view.getBigUint64(this.bbPos + offset, true) : 0n
  }

  overwriteExisting(): boolean {
    const offset = this.bb.offset(this.bbPos, 8)
    return offset ? !!this.bb.view.getInt8(this.bbPos + offset) : false
  }

  bytes(index: number): number | null {
    const offset = this.bb.offset(this.bbPos, 10)
    return offset ? this.bb.view.getUint8(this.bb.vector(this.bbPos + offset) + index) : 0
  }

  bytesLength(): number {
    const offset = this.bb.offset(this.bbPos, 10)
    return offset ? this.bb.vectorLength(this.bbPos + offset) : 0
  }

  bytesArray(): Uint8Array | null {
    const offset = this.bb.offset(this.bbPos, 10)
    return offset
      ? new Uint8Array(
          this.bb.view.buffer,
          this.bb.view.byteOffset + this.bb.vector(this.bbPos + offset),
          this.bb.vectorLength(this.bbPos + offset),
        )
      : null
  }

  static startWriteBytesCommand(builder: Builder) {
    builder.startObject(4)
  }

  static addPath(builder: Builder, pathOffset: Offset) {
    builder.addFieldOffset(0, pathOffset, 0)
  }

  static addByteOffset(builder: Builder, byteOffset: bigint) {
    builder.addFieldInt64(1, byteOffset, 0n)
  }

  static addOverwriteExisting(builder: Builder, overwriteExisting: boolean) {
    builder.addFieldInt8(2, +overwriteExisting, +false)
  }

  static addBytes(builder: Builder, bytesOffset: Offset) {
    builder.addFieldOffset(3, bytesOffset, 0)
  }

  static createBytesVector(builder: Builder, data: number[] | Uint8Array): Offset {
    builder.startVector(1, data.length, 1)
    // An iterator is more type-safe, but less performant.
    for (let i = data.length - 1; i >= 0; i -= 1) {
      builder.addInt8(data[i]!)
    }
    return builder.endVector()
  }

  static startBytesVector(builder: Builder, numElems: number) {
    builder.startVector(1, numElems, 1)
  }

  static endWriteBytesCommand(builder: Builder): Offset {
    const offset = builder.endObject()
    builder.requiredField(offset, 4) // path
    builder.requiredField(offset, 10) // bytes
    return offset
  }

  static createWriteBytesCommand(
    builder: Builder,
    pathOffset: Offset,
    byteOffset: bigint,
    overwriteExisting: boolean,
    bytesOffset: Offset,
  ): Offset {
    WriteBytesCommand.startWriteBytesCommand(builder)
    WriteBytesCommand.addPath(builder, pathOffset)
    WriteBytesCommand.addByteOffset(builder, byteOffset)
    WriteBytesCommand.addOverwriteExisting(builder, overwriteExisting)
    WriteBytesCommand.addBytes(builder, bytesOffset)
    return WriteBytesCommand.endWriteBytesCommand(builder)
  }
}

export class WriteBytesReply implements Table {
  bb!: ByteBuffer
  bbPos: number = 0
  init(i: number, bb: ByteBuffer): WriteBytesReply {
    this.bbPos = i
    this.bb = bb
    return this
  }

  static getRootAsWriteBytesReply(bb: ByteBuffer, obj?: WriteBytesReply): WriteBytesReply {
    return (obj ?? new WriteBytesReply()).init(
      bb.view.getInt32(bb.position, true) + bb.position,
      bb,
    )
  }

  static getSizePrefixedRootAsWriteBytesReply(
    bb: ByteBuffer,
    obj?: WriteBytesReply,
  ): WriteBytesReply {
    bb.position += SIZE_PREFIX_LENGTH
    return (obj ?? new WriteBytesReply()).init(
      bb.view.getInt32(bb.position, true) + bb.position,
      bb,
    )
  }

  checksum(obj?: EnsoDigest): EnsoDigest | null {
    const offset = this.bb.offset(this.bbPos, 4)
    return offset
      ? (obj ?? new EnsoDigest()).init(this.bb.indirect(this.bbPos + offset), this.bb!)
      : null
  }

  static startWriteBytesReply(builder: Builder) {
    builder.startObject(1)
  }

  static addChecksum(builder: Builder, checksumOffset: Offset) {
    builder.addFieldOffset(0, checksumOffset, 0)
  }

  static endWriteBytesReply(builder: Builder): Offset {
    const offset = builder.endObject()
    builder.requiredField(offset, 4) // checksum
    return offset
  }

  static createWriteBytesReply(builder: Builder, checksumOffset: Offset): Offset {
    WriteBytesReply.startWriteBytesReply(builder)
    WriteBytesReply.addChecksum(builder, checksumOffset)
    return WriteBytesReply.endWriteBytesReply(builder)
  }
}

export class ReadBytesCommand implements Table {
  bb!: ByteBuffer
  bbPos: number = 0
  init(i: number, bb: ByteBuffer): ReadBytesCommand {
    this.bbPos = i
    this.bb = bb
    return this
  }

  static getRootAsReadBytesCommand(bb: ByteBuffer, obj?: ReadBytesCommand): ReadBytesCommand {
    return (obj ?? new ReadBytesCommand()).init(
      bb.view.getInt32(bb.position, true) + bb.position,
      bb,
    )
  }

  static getSizePrefixedRootAsReadBytesCommand(
    bb: ByteBuffer,
    obj?: ReadBytesCommand,
  ): ReadBytesCommand {
    bb.position += SIZE_PREFIX_LENGTH
    return (obj ?? new ReadBytesCommand()).init(
      bb.view.getInt32(bb.position, true) + bb.position,
      bb,
    )
  }

  segment(obj?: FileSegment): FileSegment | null {
    const offset = this.bb.offset(this.bbPos, 4)
    return offset
      ? (obj ?? new FileSegment()).init(this.bb.indirect(this.bbPos + offset), this.bb!)
      : null
  }

  static startReadBytesCommand(builder: Builder) {
    builder.startObject(1)
  }

  static addSegment(builder: Builder, segmentOffset: Offset) {
    builder.addFieldOffset(0, segmentOffset, 0)
  }

  static endReadBytesCommand(builder: Builder): Offset {
    const offset = builder.endObject()
    builder.requiredField(offset, 4) // segment
    return offset
  }

  static createReadBytesCommand(builder: Builder, segmentOffset: Offset): Offset {
    ReadBytesCommand.startReadBytesCommand(builder)
    ReadBytesCommand.addSegment(builder, segmentOffset)
    return ReadBytesCommand.endReadBytesCommand(builder)
  }
}

export class ReadBytesReply implements Table {
  bb!: ByteBuffer
  bbPos: number = 0
  init(i: number, bb: ByteBuffer): ReadBytesReply {
    this.bbPos = i
    this.bb = bb
    return this
  }

  static getRootAsReadBytesReply(bb: ByteBuffer, obj?: ReadBytesReply): ReadBytesReply {
    return (obj ?? new ReadBytesReply()).init(bb.view.getInt32(bb.position, true) + bb.position, bb)
  }

  static getSizePrefixedRootAsReadBytesReply(bb: ByteBuffer, obj?: ReadBytesReply): ReadBytesReply {
    bb.position += SIZE_PREFIX_LENGTH
    return (obj ?? new ReadBytesReply()).init(bb.view.getInt32(bb.position, true) + bb.position, bb)
  }

  checksum(obj?: EnsoDigest): EnsoDigest | null {
    const offset = this.bb.offset(this.bbPos, 4)
    return offset
      ? (obj ?? new EnsoDigest()).init(this.bb.indirect(this.bbPos + offset), this.bb!)
      : null
  }

  bytes(index: number): number | null {
    const offset = this.bb.offset(this.bbPos, 6)
    return offset ? this.bb.view.getUint8(this.bb.vector(this.bbPos + offset) + index) : 0
  }

  bytesLength(): number {
    const offset = this.bb.offset(this.bbPos, 6)
    return offset ? this.bb.vectorLength(this.bbPos + offset) : 0
  }

  bytesArray(): Uint8Array | null {
    const offset = this.bb.offset(this.bbPos, 6)
    return offset
      ? new Uint8Array(
          this.bb.view.buffer,
          this.bb.view.byteOffset + this.bb.vector(this.bbPos + offset),
          this.bb.vectorLength(this.bbPos + offset),
        )
      : null
  }

  static startReadBytesReply(builder: Builder) {
    builder.startObject(2)
  }

  static addChecksum(builder: Builder, checksumOffset: Offset) {
    builder.addFieldOffset(0, checksumOffset, 0)
  }

  static addBytes(builder: Builder, bytesOffset: Offset) {
    builder.addFieldOffset(1, bytesOffset, 0)
  }

  static createBytesVector(builder: Builder, data: number[] | Uint8Array): Offset {
    builder.startVector(1, data.length, 1)
    // An iterator is more type-safe, but less performant.
    for (let i = data.length - 1; i >= 0; i -= 1) {
      builder.addInt8(data[i]!)
    }
    return builder.endVector()
  }

  static startBytesVector(builder: Builder, numElems: number) {
    builder.startVector(1, numElems, 1)
  }

  static endReadBytesReply(builder: Builder): Offset {
    const offset = builder.endObject()
    builder.requiredField(offset, 4) // checksum
    builder.requiredField(offset, 6) // bytes
    return offset
  }

  static createReadBytesReply(
    builder: Builder,
    checksumOffset: Offset,
    bytesOffset: Offset,
  ): Offset {
    ReadBytesReply.startReadBytesReply(builder)
    ReadBytesReply.addChecksum(builder, checksumOffset)
    ReadBytesReply.addBytes(builder, bytesOffset)
    return ReadBytesReply.endReadBytesReply(builder)
  }
}

export class ChecksumBytesCommand implements Table {
  bb!: ByteBuffer
  bbPos: number = 0
  init(i: number, bb: ByteBuffer): ChecksumBytesCommand {
    this.bbPos = i
    this.bb = bb
    return this
  }

  static getRootAsChecksumBytesCommand(
    bb: ByteBuffer,
    obj?: ChecksumBytesCommand,
  ): ChecksumBytesCommand {
    return (obj ?? new ChecksumBytesCommand()).init(
      bb.view.getInt32(bb.position, true) + bb.position,
      bb,
    )
  }

  static getSizePrefixedRootAsChecksumBytesCommand(
    bb: ByteBuffer,
    obj?: ChecksumBytesCommand,
  ): ChecksumBytesCommand {
    bb.position += SIZE_PREFIX_LENGTH
    return (obj ?? new ChecksumBytesCommand()).init(
      bb.view.getInt32(bb.position, true) + bb.position,
      bb,
    )
  }

  segment(obj?: FileSegment): FileSegment | null {
    const offset = this.bb.offset(this.bbPos, 4)
    return offset
      ? (obj ?? new FileSegment()).init(this.bb.indirect(this.bbPos + offset), this.bb!)
      : null
  }

  static startChecksumBytesCommand(builder: Builder) {
    builder.startObject(1)
  }

  static addSegment(builder: Builder, segmentOffset: Offset) {
    builder.addFieldOffset(0, segmentOffset, 0)
  }

  static endChecksumBytesCommand(builder: Builder): Offset {
    const offset = builder.endObject()
    builder.requiredField(offset, 4) // segment
    return offset
  }

  static createChecksumBytesCommand(builder: Builder, segmentOffset: Offset): Offset {
    ChecksumBytesCommand.startChecksumBytesCommand(builder)
    ChecksumBytesCommand.addSegment(builder, segmentOffset)
    return ChecksumBytesCommand.endChecksumBytesCommand(builder)
  }
}

export class ChecksumBytesReply implements Table {
  bb!: ByteBuffer
  bbPos: number = 0
  init(i: number, bb: ByteBuffer): ChecksumBytesReply {
    this.bbPos = i
    this.bb = bb
    return this
  }

  static getRootAsChecksumBytesReply(bb: ByteBuffer, obj?: ChecksumBytesReply): ChecksumBytesReply {
    return (obj ?? new ChecksumBytesReply()).init(
      bb.view.getInt32(bb.position, true) + bb.position,
      bb,
    )
  }

  static getSizePrefixedRootAsChecksumBytesReply(
    bb: ByteBuffer,
    obj?: ChecksumBytesReply,
  ): ChecksumBytesReply {
    bb.position += SIZE_PREFIX_LENGTH
    return (obj ?? new ChecksumBytesReply()).init(
      bb.view.getInt32(bb.position, true) + bb.position,
      bb,
    )
  }

  checksum(obj?: EnsoDigest): EnsoDigest | null {
    const offset = this.bb.offset(this.bbPos, 4)
    return offset
      ? (obj ?? new EnsoDigest()).init(this.bb.indirect(this.bbPos + offset), this.bb!)
      : null
  }

  static startChecksumBytesReply(builder: Builder) {
    builder.startObject(1)
  }

  static addChecksum(builder: Builder, checksumOffset: Offset) {
    builder.addFieldOffset(0, checksumOffset, 0)
  }

  static endChecksumBytesReply(builder: Builder): Offset {
    const offset = builder.endObject()
    builder.requiredField(offset, 4) // checksum
    return offset
  }

  static createChecksumBytesReply(builder: Builder, checksumOffset: Offset): Offset {
    ChecksumBytesReply.startChecksumBytesReply(builder)
    ChecksumBytesReply.addChecksum(builder, checksumOffset)
    return ChecksumBytesReply.endChecksumBytesReply(builder)
  }
}

export class EnsoDigest implements Table {
  bb!: ByteBuffer
  bbPos: number = 0
  init(i: number, bb: ByteBuffer): EnsoDigest {
    this.bbPos = i
    this.bb = bb
    return this
  }

  static getRootAsEnsoDigest(bb: ByteBuffer, obj?: EnsoDigest): EnsoDigest {
    return (obj ?? new EnsoDigest()).init(bb.view.getInt32(bb.position, true) + bb.position, bb)
  }

  static getSizePrefixedRootAsEnsoDigest(bb: ByteBuffer, obj?: EnsoDigest): EnsoDigest {
    bb.position += SIZE_PREFIX_LENGTH
    return (obj ?? new EnsoDigest()).init(bb.view.getInt32(bb.position, true) + bb.position, bb)
  }

  bytes(index: number): number | null {
    const offset = this.bb.offset(this.bbPos, 4)
    return offset ? this.bb.view.getUint8(this.bb.vector(this.bbPos + offset) + index) : 0
  }

  bytesLength(): number {
    const offset = this.bb.offset(this.bbPos, 4)
    return offset ? this.bb.vectorLength(this.bbPos + offset) : 0
  }

  bytesArray(): Uint8Array | null {
    const offset = this.bb.offset(this.bbPos, 4)
    return offset
      ? new Uint8Array(
          this.bb.view.buffer,
          this.bb.view.byteOffset + this.bb.vector(this.bbPos + offset),
          this.bb.vectorLength(this.bbPos + offset),
        )
      : null
  }

  static startEnsoDigest(builder: Builder) {
    builder.startObject(1)
  }

  static addBytes(builder: Builder, bytesOffset: Offset) {
    builder.addFieldOffset(0, bytesOffset, 0)
  }

  static createBytesVector(builder: Builder, data: number[] | Uint8Array): Offset {
    builder.startVector(1, data.length, 1)
    // An iterator is more type-safe, but less performant.
    for (let i = data.length - 1; i >= 0; i -= 1) {
      builder.addInt8(data[i]!)
    }
    return builder.endVector()
  }

  static startBytesVector(builder: Builder, numElems: number) {
    builder.startVector(1, numElems, 1)
  }

  static endEnsoDigest(builder: Builder): Offset {
    const offset = builder.endObject()
    builder.requiredField(offset, 4) // bytes
    return offset
  }

  static createEnsoDigest(builder: Builder, bytesOffset: Offset): Offset {
    EnsoDigest.startEnsoDigest(builder)
    EnsoDigest.addBytes(builder, bytesOffset)
    return EnsoDigest.endEnsoDigest(builder)
  }
}

export class FileSegment implements Table {
  bb!: ByteBuffer
  bbPos: number = 0
  init(i: number, bb: ByteBuffer): FileSegment {
    this.bbPos = i
    this.bb = bb
    return this
  }

  static getRootAsFileSegment(bb: ByteBuffer, obj?: FileSegment): FileSegment {
    return (obj ?? new FileSegment()).init(bb.view.getInt32(bb.position, true) + bb.position, bb)
  }

  static getSizePrefixedRootAsFileSegment(bb: ByteBuffer, obj?: FileSegment): FileSegment {
    bb.position += SIZE_PREFIX_LENGTH
    return (obj ?? new FileSegment()).init(bb.view.getInt32(bb.position, true) + bb.position, bb)
  }

  path(obj?: Path): Path | null {
    const offset = this.bb.offset(this.bbPos, 4)
    return offset ? (obj ?? new Path()).init(this.bb.indirect(this.bbPos + offset), this.bb!) : null
  }

  byteOffset(): bigint {
    const offset = this.bb.offset(this.bbPos, 6)
    return offset ? this.bb.view.getBigUint64(this.bbPos + offset, true) : 0n
  }

  length(): bigint {
    const offset = this.bb.offset(this.bbPos, 8)
    return offset ? this.bb.view.getBigUint64(this.bbPos + offset, true) : 0n
  }

  static startFileSegment(builder: Builder) {
    builder.startObject(3)
  }

  static addPath(builder: Builder, pathOffset: Offset) {
    builder.addFieldOffset(0, pathOffset, 0)
  }

  static addByteOffset(builder: Builder, byteOffset: bigint) {
    builder.addFieldInt64(1, byteOffset, 0n)
  }

  static addLength(builder: Builder, length: bigint) {
    builder.addFieldInt64(2, length, 0n)
  }

  static endFileSegment(builder: Builder): Offset {
    const offset = builder.endObject()
    builder.requiredField(offset, 4) // path
    return offset
  }

  static createFileSegment(
    builder: Builder,
    pathOffset: Offset,
    byteOffset: bigint,
    length: bigint,
  ): Offset {
    FileSegment.startFileSegment(builder)
    FileSegment.addPath(builder, pathOffset)
    FileSegment.addByteOffset(builder, byteOffset)
    FileSegment.addLength(builder, length)
    return FileSegment.endFileSegment(builder)
  }
}