import * as zjson from "../../zjson"
import {DecodeStream} from "../decode-stream"
import {EncodeStream} from "../encode-stream"
import {Error} from "../values/error"
import {Type} from "./types"
export class TypeError implements Type {
  kind = "error"

  constructor(public type: Type) {}

  static stringify(type: Type) {
    return `error<${type.toString()}>`
  }

  create(value: zjson.Value, stream: DecodeStream) {
    if (value === null) {
      return new Error(this, null)
    } else {
      return new Error(this, this.type.create(value, stream))
    }
  }

  serialize(stream: EncodeStream): zjson.NoId<zjson.ErrorType> {
    return {
      kind: "error",
      type: stream.encodeType(this.type),
    }
  }

  toString(): string {
    return TypeError.stringify(this.type)
  }
}