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Name	Size	Permission
testing	[ DIR ]	drwxrwxr-x
types	[ DIR ]	drwxrwxr-x
b.ts	562 B	-rw-rw-r--
buffer-reader.ts	1.24 KB	-rw-rw-r--
buffer-writer.ts	2.43 KB	-rw-rw-r--
inbound-parser.test.ts	14.67 KB	-rw-rw-r--
index.ts	459 B	-rw-rw-r--
messages.ts	6.18 KB	-rw-rw-r--
outbound-serializer.test.ts	8.25 KB	-rw-rw-r--
parser.ts	13.11 KB	-rw-rw-r--
serializer.ts	7.02 KB	-rw-rw-r--

Code Editor : messages.ts

export type Mode = 'text' | 'binary'

export interface BackendMessage {
  name: MessageName
  length: number
}

export const parseComplete: BackendMessage = {
  name: 'parseComplete',
  length: 5,
}

export const bindComplete: BackendMessage = {
  name: 'bindComplete',
  length: 5,
}

export const closeComplete: BackendMessage = {
  name: 'closeComplete',
  length: 5,
}

export const noData: BackendMessage = {
  name: 'noData',
  length: 5,
}

export const portalSuspended: BackendMessage = {
  name: 'portalSuspended',
  length: 5,
}

export const replicationStart: BackendMessage = {
  name: 'replicationStart',
  length: 4,
}

export const emptyQuery: BackendMessage = {
  name: 'emptyQuery',
  length: 4,
}

export const copyDone: BackendMessage = {
  name: 'copyDone',
  length: 4,
}

interface NoticeOrError {
  message: string | undefined
  severity: string | undefined
  code: string | undefined
  detail: string | undefined
  hint: string | undefined
  position: string | undefined
  internalPosition: string | undefined
  internalQuery: string | undefined
  where: string | undefined
  schema: string | undefined
  table: string | undefined
  column: string | undefined
  dataType: string | undefined
  constraint: string | undefined
  file: string | undefined
  line: string | undefined
  routine: string | undefined
}

export class DatabaseError extends Error implements NoticeOrError {
  public severity: string | undefined
  public code: string | undefined
  public detail: string | undefined
  public hint: string | undefined
  public position: string | undefined
  public internalPosition: string | undefined
  public internalQuery: string | undefined
  public where: string | undefined
  public schema: string | undefined
  public table: string | undefined
  public column: string | undefined
  public dataType: string | undefined
  public constraint: string | undefined
  public file: string | undefined
  public line: string | undefined
  public routine: string | undefined
  constructor(message: string, public readonly length: number, public readonly name: MessageName) {
    super(message)
  }
}

export class CopyDataMessage {
  public readonly name = 'copyData'
  constructor(public readonly length: number, public readonly chunk: Buffer) {}
}

export class CopyResponse {
  public readonly columnTypes: number[]
  constructor(
    public readonly length: number,
    public readonly name: MessageName,
    public readonly binary: boolean,
    columnCount: number
  ) {
    this.columnTypes = new Array(columnCount)
  }
}

export class Field {
  constructor(
    public readonly name: string,
    public readonly tableID: number,
    public readonly columnID: number,
    public readonly dataTypeID: number,
    public readonly dataTypeSize: number,
    public readonly dataTypeModifier: number,
    public readonly format: Mode
  ) {}
}

export class RowDescriptionMessage {
  public readonly name: MessageName = 'rowDescription'
  public readonly fields: Field[]
  constructor(public readonly length: number, public readonly fieldCount: number) {
    this.fields = new Array(this.fieldCount)
  }
}

export class ParameterDescriptionMessage {
  public readonly name: MessageName = 'parameterDescription'
  public readonly dataTypeIDs: number[]
  constructor(public readonly length: number, public readonly parameterCount: number) {
    this.dataTypeIDs = new Array(this.parameterCount)
  }
}

export class ParameterStatusMessage {
  public readonly name: MessageName = 'parameterStatus'
  constructor(
    public readonly length: number,
    public readonly parameterName: string,
    public readonly parameterValue: string
  ) {}
}

export class AuthenticationMD5Password implements BackendMessage {
  public readonly name: MessageName = 'authenticationMD5Password'
  constructor(public readonly length: number, public readonly salt: Buffer) {}
}

export class BackendKeyDataMessage {
  public readonly name: MessageName = 'backendKeyData'
  constructor(public readonly length: number, public readonly processID: number, public readonly secretKey: number) {}
}

export class NotificationResponseMessage {
  public readonly name: MessageName = 'notification'
  constructor(
    public readonly length: number,
    public readonly processId: number,
    public readonly channel: string,
    public readonly payload: string
  ) {}
}

export class ReadyForQueryMessage {
  public readonly name: MessageName = 'readyForQuery'
  constructor(public readonly length: number, public readonly status: string) {}
}

export class CommandCompleteMessage {
  public readonly name: MessageName = 'commandComplete'
  constructor(public readonly length: number, public readonly text: string) {}
}

export class DataRowMessage {
  public readonly fieldCount: number
  public readonly name: MessageName = 'dataRow'
  constructor(public length: number, public fields: any[]) {
    this.fieldCount = fields.length
  }
}

export class NoticeMessage implements BackendMessage, NoticeOrError {
  constructor(public readonly length: number, public readonly message: string | undefined) {}
  public readonly name = 'notice'
  public severity: string | undefined
  public code: string | undefined
  public detail: string | undefined
  public hint: string | undefined
  public position: string | undefined
  public internalPosition: string | undefined
  public internalQuery: string | undefined
  public where: string | undefined
  public schema: string | undefined
  public table: string | undefined
  public column: string | undefined
  public dataType: string | undefined
  public constraint: string | undefined
  public file: string | undefined
  public line: string | undefined
  public routine: string | undefined
}

Urban Research Lab

The Urban Research Lab (URL) at IIIT-Delhi was established in 2020, during a time when the pandemic brought the complexities of urban life more visible than ever. What started as an initiative by faculty and students has grown into a collaborative space for critically exploring and reimagining the urban questions through research, dialogue, and interdisciplinary engagement.

${this.title}

Code Editor : messages.ts

Urban Research Lab