Maybe Swagger::Object accept Crystal Class or Struct?

[icyleaf]

I dig how macro works in Crystal and done a simple Reflect class, but Crystal can not accept Any Class or Struct as args of method. (also thanks @jhass in gitter)

module Swagger
  struct Object(T)
    property object : T
    property default_name : String
    property custom_name : String?

    def initialize(@object : T, @custom_name : String? = nil)
      @default_name = @custom_name ? @custom_name.as(String) : @object.class.name
    end

    def properties
      @object.instance_vars
    end
  end

  struct Mirror(T)
    property object

    def initialize(reflecting @object : T)
    end

    def instance_vars
      {% begin %}
        {{ ikeys = T.instance.instance_vars.map {|var| "#{var.type}.class" }.join('|').id }}
        vars = [] of Child({{ T.instance.instance_vars.map {|var| "#{var.type}.class" }.join('|').id }}, {{ T.instance.instance_vars.map {|var| var.type }.join('|').id }})
        {% for ivar in T.instance.instance_vars %}
          {{ iname = ivar.name.stringify }}
          {{ itype = ivar.type }}
          {{ irequired = !ivar.type.union? }}
          value = {% if T.class? || T.struct? %} @object.{{ ivar.name }} {% else %} {{ ivar.default_value }} {% end %}
          vars << Child.new({{ iname }}, {{ itype }}, value, {{ irequired }})
        {% end %}

        vars
      {% end %}
    end

    struct Child(K, V)
      getter :name, :type, :value, :required

      def initialize(@name : String, @type : K, @value : V, @required : Bool)
      end
    end
  end
end

Next add Object will be simple to add:

struct User
  property id, nickname, username, email, bio

  def initialize(@id : String, @nickname : String, @username : String, @email : String, @bio : String? = nil)
  end
end

user = User.new(
  UUID.random.to_s, "icyleaf wang", "icyleaf", "[email protected]", "Personal bio"
)

builder.add(Swagger::Object.new(user))