@brimdata/zealot/src/zed/values/type-value.ts

The Javascript Client for Zed Lakes

import {EncodeStream} from "../encode-stream"
import {TypeType} from "../types/type-type"
import {Type} from "../types/types"
import {isNull} from "../utils/is-null"
import {Value} from "./types"

export class TypeValue implements Value {
  type: typeof TypeType = TypeType

  constructor(public value: Type | null = null) {}

  isUnset() {
    return isNull(this.value)
  }

  toString() {
    if (isNull(this.value)) return "null"
    return this.value.toString()
  }

  serialize(stream: EncodeStream) {
    if (isNull(this.value)) {
      return null
    } else {
      return this.value.serialize(stream)
    }
  }

  toJS() {
    if (isNull(this.value)) return null
    return this.toString()
  }
}