lib/versionaire/version.rb in versionaire-12.0.1 vs lib/versionaire/version.rb in versionaire-12.1.0

@@ -5,10 +5,11 @@
 module Versionaire
   # An immutable, semantic version value object.
   Version = Struct.new :major, :minor, :patch, keyword_init: true do
     include Comparable
 
+    using Refinements::Arrays
     using Refinements::Structs
 
     def initialize major: 0, minor: 0, patch: 0
       super
       validate
@@ -17,24 +18,37 @@
 
     def []= key, value
       super(key, value).tap { validate }
     end
 
-    def +(other) = revalue(other.to_h) { |previous, current| previous + current }
+    def +(other) = (revalue(other.to_h) { |previous, current| previous + current }).freeze
 
-    def -(other) = revalue(other.to_h) { |previous, current| previous - current }
+    def -(other) = (revalue(other.to_h) { |previous, current| previous - current }).freeze
 
     def ==(other) = hash == other.hash
 
     alias_method :eql?, :==
 
     def <=>(other) = to_s <=> other.to_s
 
-    def down(key, value = 1) = revalue(key => value) { |previous, current| previous - current }
+    def down key, value = 1
+      (revalue(key => value) { |previous, current| previous - current }).freeze
+    end
 
-    def up(key, value = 1) = revalue(key => value) { |previous, current| previous + current }
+    def up key, value = 1
+      (revalue(key => value) { |previous, current| previous + current }).freeze
+    end
 
+    def bump key
+      case key
+        when :major then bump_major
+        when :minor then bump_minor
+        when :patch then bump_patch
+        else fail Error, %(Invalid key: #{key.inspect}. Use: #{members.to_sentence "or"}.)
+      end
+    end
+
     def inspect = to_s.inspect
 
     def to_proc = method(:[]).to_proc
 
     def to_s = to_a.join DELIMITER
@@ -48,7 +62,13 @@
                                                                    !number.is_a? Integer
                                                                  end
 
       fail Error, "Major, minor, and patch must be a positive number." if to_a.any?(&:negative?)
     end
+
+    def bump_major = merge(major: major + 1, minor: 0, patch: 0).freeze
+
+    def bump_minor = merge(major:, minor: minor + 1, patch: 0).freeze
+
+    def bump_patch = merge(major:, minor:, patch: patch + 1).freeze
   end
 end