YAML.parse parses key 0: as string instead of Int64

[Blacksmoke16]

Take the following yaml data:

yaml_data = %(
10:
    description:
        de: 'Ein Hauptreihenstern einer Klasse von Himmelskörpern, die sich typischerweise
            durch eine weiße oder weiß-gelbe Färbung auszeichnen. Die Energieerzeugung
            dieser Sterne wird durch Wasserstofffusion angetrieben und sie sind oft
            sehr heiß und hell.'
    graphicID: 21466
    groupID: 6
    mass: 1000000000000000000
    name:
        de: Sun F0 (White)
        en: Sun F0 (White)
        fr: Soleil F0 (blanche)
        ja: 恒星F0（ホワイト）
        ru: Sun F0 (White)
        zh: 恒星F0 (白色)
    portionSize: 1
    published: false
    radius: 10000
    soundID: 20098
    volume: 1
0:
    groupID: 0
    mass: 1.0
    name:
        de: '#System'
        en: '#System'
        fr: '#Système'
        ja: '#システム'
        ru: '#Система'
        zh: '#星系'
    portionSize: 1
    published: false
2:
    groupID: 2
    name:
        de: Corporation
        en: Corporation
        fr: Corporation
        ja: コーポレーション
        ru: Corporation
        zh: 军团
    portionSize: 1
    published: false
3:
    groupID: 3
    name:
        de: Region
        en: Region
        fr: Région
        ja: リージョン
        ru: Region
        zh: 星域
    portionSize: 1
    published: false
    volume: 1.0
)

When doing a YAML.parse on the yaml data, all the keys except for 0 are casted as an Int64, while 0 is casted as a string.

https://play.crystal-lang.org/#/r/47be/edit

require "yaml"  

  yaml = YAML.parse(yaml_data)

  p yaml

{10_i64 =>
  {"description" =>
    {"de" =>
      "Ein Hauptreihenstern einer Klasse von Himmelskörpern, die sich typischerweise durch eine weiße oder weiß-gelbe Färbung auszeichnen. Die Energieerzeugung dieser Sterne wird durch Wasserstofffusion angetrieben und sie sind oft sehr heiß und hell."},
   "graphicID" => 21466_i64,
   "groupID" => 6_i64,
   "mass" => 1000000000000000000_i64,
   "name" =>
    {"de" => "Sun F0 (White)",
     "en" => "Sun F0 (White)",
     "fr" => "Soleil F0 (blanche)",
     "ja" => "恒星F0（ホワイト）",
     "ru" => "Sun F0 (White)",
     "zh" => "恒星F0 (白色)"},
   "portionSize" => 1_i64,
   "published" => false,
   "radius" => 10000_i64,
   "soundID" => 20098_i64,
   "volume" => 1_i64},
 "0" =>
  {"groupID" => "0",
   "mass" => 1.0,
   "name" =>
    {"de" => "#System",
     "en" => "#System",
     "fr" => "#Système",
     "ja" => "#システム",
     "ru" => "#Система",
     "zh" => "#星系"},
   "portionSize" => 1_i64,
   "published" => false},
 2_i64 =>
  {"groupID" => 2_i64,
   "name" =>
    {"de" => "Corporation",
     "en" => "Corporation",
     "fr" => "Corporation",
     "ja" => "コーポレーション",
     "ru" => "Corporation",
     "zh" => "军团"},
   "portionSize" => 1_i64,
   "published" => false},
 3_i64 =>
  {"groupID" => 3_i64,
   "name" =>
    {"de" => "Region",
     "en" => "Region",
     "fr" => "Région",
     "ja" => "リージョン",
     "ru" => "Region",
     "zh" => "星域"},
   "portionSize" => 1_i64,
   "published" => false,
   "volume" => 1.0}}

[bew]

This is resolved in master, and will be available in next release

[straight-shoota]

For reference: #5774