lib/versionaire/version.rb in versionaire-8.6.0 vs lib/versionaire/version.rb in versionaire-8.7.0

@@ -1,14 +1,18 @@
 # frozen_string_literal: true
 
+require "refinements/structs"
+
 module Versionaire
   DELIMITER = "."
 
   # An immutable, semantic version value object.
   Version = Struct.new :major, :minor, :patch, keyword_init: true do
     include Comparable
 
+    using Refinements::Structs
+
     def self.regex
       /
         \A(                  # Start of string and OR.
         \d*                  # Major only.
         |                    # OR pipe.
@@ -28,16 +32,20 @@
       super
       validate
       freeze
     end
 
+    def []= key, value
+      super(key, value).tap { validate }
+    end
+
     def + other
-      self.class.then { |klass| klass.new(**klass.arguments(*reduce(other, :+))) }
+      revalue(other.to_h) { |previous, current| previous + current }
     end
 
     def - other
-      self.class.then { |klass| klass.new(**klass.arguments(*reduce(other, :-))) }
+      revalue(other.to_h) { |previous, current| previous - current }
     end
 
     def == other
       hash == other.hash
     end
@@ -46,27 +54,28 @@
 
     def <=> other
       to_s <=> other.to_s
     end
 
+    def down key, value = 1
+      revalue(key => value) { |previous, current| previous - current }
+    end
+
+    def up key, value = 1
+      revalue(key => value) { |previous, current| previous + current }
+    end
+
     def to_s
       to_a.join DELIMITER
     end
 
     alias_method :to_str, :to_s
+    alias_method :values, :to_a
 
-    def to_a
-      [major, minor, patch]
-    end
-
     private
 
     def validate
       fail Errors::InvalidNumber if to_a.any? { |number| !number.is_a? Integer }
       fail Errors::NegativeNumber if to_a.any?(&:negative?)
-    end
-
-    def reduce other, action
-      to_a.zip(other.to_a).map { |pair| pair.reduce action }
     end
   end
 end