This code is totally electronic trash for solving an issue at V2EX, please don't use it in your production environment.

vson.scala

// 
object Vson extends RegexParsers:
  val string: Parser[String] = """[^,:}]+""".r ^^ { str => str.trim }
  val int: Parser[Int] = """-?\d+""".r ^^ (_.toInt)
  val double: Parser[Double] = """-?\d+\.\d+""".r ^^ (_.toDouble)
  val bool: Parser[Boolean] = "true" ^^^ true | "false" ^^^ false
  def pair: Parser[(String, Json)] = (string <~ ":") ~ value ^^ { case k ~ v => (k, v) }
  def obj: Parser[Json] = "{" ~> repsep(options | pair, ",") <~ "}" ^^ Json.fromFields
  def tuple: Parser[(Int, String, String)] = ((int <~ ":") ~ string <~ ":") ~ string ^^ { case k ~ v1 ~ v2 => (k, v1, v2) }
  def array: Parser[List[(Int, String, String)]] = repsep(tuple, ",")
  def options: Vson.Parser[(String, Json)] = ("options" <~ ":") ~ array ^^ { case k ~ v => (k, v.asJson) }
  def value: Parser[Json] =
    string ^^ Json.fromString
    | int ^^ Json.fromInt
    | double ^^ Json.fromDoubleOrNull
    | bool ^^ Json.fromBoolean

  def run(text: String): Json =
    parseAll(obj, text) match
      case Success(json, _) => json
      case Failure(msg, _) => throw new Exception(msg)
      case Error(msg, _) => throw new Exception(msg)

object VsonTest extends App:
  val res = Vson.run("{label  :用户 id,searchType:1,hide:1,disabled:1,required:1,options:1:yes:tag-info,2:no:tag-danger}")
  println(res)

Result:

/Users/.../.sdkman/candidates/java/22.1.0.r17-grl/bin/java ......
{
  "label" : "用户 id",
  "searchType" : "1",
  "hide" : "1",
  "disabled" : "1",
  "required" : "1",
  "options" : [
    [
      1,
      "yes",
      "tag-info"
    ],
    [
      2,
      "no",
      "tag-danger"
    ]
  ]
}

Process finished with exit code 0