lib/king_konf/variable.rb in king_konf-0.1.10 vs lib/king_konf/variable.rb in king_konf-0.2.0

@@ -1,15 +1,16 @@
 require "king_konf/decoder"
 
 module KingKonf
   class Variable
-    attr_reader :name, :type, :default, :description, :options
+    attr_reader :name, :type, :default, :description, :allowed_values, :options
 
-    def initialize(name:, type:, default: nil, description: "", required: false, options: {})
+    def initialize(name:, type:, default: nil, description: "", required: false, allowed_values: nil, options: {})
       @name, @type, @default = name, type, default
       @description = description
       @required = required
+      @allowed_values = allowed_values
       @options = options
     end
 
     def cast(value)
       case @type
@@ -29,9 +30,13 @@
       when :integer then value.is_a?(Integer) || value.nil?
       when :float then value.is_a?(Float) || value.is_a?(Integer) || value.nil?
       when :boolean then value == true || value == false
       else raise "invalid type #{@type}"
       end
+    end
+
+    def allowed?(value)
+      allowed_values.nil? || allowed_values.include?(value)
     end
 
     def decode(value)
       Decoder.public_send(@type, value, **options)
     end