Drop support for Ruby 2.6 and Ruby 2.7

.github/workflows/main.yml

@@ -17,8 +17,6 @@ jobs:
           - '3.2'
           - '3.1'
           - '3.0'
-          - '2.7'
-          - '2.6'
 
     steps:
     - uses: actions/checkout@v3

.rubocop.yml

@@ -1,5 +1,5 @@
 AllCops:
-  TargetRubyVersion: 2.6
+  TargetRubyVersion: 3.0
   SuggestExtensions: false
   NewCops: enable
 Layout/ArgumentAlignment:

CHANGELOG.md

@@ -3,6 +3,9 @@
 ### Added
 - [bkjohnson] Add support for JSON Schema validation keywords (#29)
 
+### Changed
+- Drop support for Ruby 2.6 and Ruby 2.7
+
 ## [1.0.0] - 2023-07-15
 
 ### Added

README.md

@@ -17,7 +17,7 @@ Documentation with interactive examples is available at [Shale website](https://
 
 ## Installation
 
-Shale supports Ruby (MRI) 2.6+
+Shale supports Ruby (MRI) 3.0+
 
 Add this line to your application's Gemfile:
 

lib/shale/schema/xml_compiler.rb

@@ -34,51 +34,51 @@ class XMLCompiler
 
       # XML Schema "schema" element name
       # @api private
-      XS_SCHEMA = "#{XS_NAMESPACE_URI}:schema"
+      XS_SCHEMA = "#{XS_NAMESPACE_URI}:schema".freeze
 
       # XML Schema "element" element name
       # @api private
-      XS_ELEMENT = "#{XS_NAMESPACE_URI}:element"
+      XS_ELEMENT = "#{XS_NAMESPACE_URI}:element".freeze
 
       # XML Schema "attribute" element name
       # @api private
-      XS_ATTRIBUTE = "#{XS_NAMESPACE_URI}:attribute"
+      XS_ATTRIBUTE = "#{XS_NAMESPACE_URI}:attribute".freeze
 
       # XML Schema "attribute" element name
       # @api private
-      XS_SIMPLE_TYPE = "#{XS_NAMESPACE_URI}:simpleType"
+      XS_SIMPLE_TYPE = "#{XS_NAMESPACE_URI}:simpleType".freeze
 
       # XML Schema "simpleContent" element name
       # @api private
-      XS_SIMPLE_CONTENT = "#{XS_NAMESPACE_URI}:simpleContent"
+      XS_SIMPLE_CONTENT = "#{XS_NAMESPACE_URI}:simpleContent".freeze
 
       # XML Schema "restriction" element name
       # @api private
-      XS_RESTRICTION = "#{XS_NAMESPACE_URI}:restriction"
+      XS_RESTRICTION = "#{XS_NAMESPACE_URI}:restriction".freeze
 
       # XML Schema "group" element name
       # @api private
-      XS_GROUP = "#{XS_NAMESPACE_URI}:group"
+      XS_GROUP = "#{XS_NAMESPACE_URI}:group".freeze
 
       # XML Schema "attributeGroup" element name
       # @api private
-      XS_ATTRIBUTE_GROUP = "#{XS_NAMESPACE_URI}:attributeGroup"
+      XS_ATTRIBUTE_GROUP = "#{XS_NAMESPACE_URI}:attributeGroup".freeze
 
       # XML Schema "complexType" element name
       # @api private
-      XS_COMPLEX_TYPE = "#{XS_NAMESPACE_URI}:complexType"
+      XS_COMPLEX_TYPE = "#{XS_NAMESPACE_URI}:complexType".freeze
 
       # XML Schema "complexContent" element name
       # @api private
-      XS_COMPLEX_CONTENT = "#{XS_NAMESPACE_URI}:complexContent"
+      XS_COMPLEX_CONTENT = "#{XS_NAMESPACE_URI}:complexContent".freeze
 
       # XML Schema "extension" element name
       # @api private
-      XS_EXTENSION = "#{XS_NAMESPACE_URI}:extension"
+      XS_EXTENSION = "#{XS_NAMESPACE_URI}:extension".freeze
 
       # XML Schema "anyType" type
       # @api private
-      XS_TYPE_ANY = "#{XS_NAMESPACE_URI}:anyType"
+      XS_TYPE_ANY = "#{XS_NAMESPACE_URI}:anyType".freeze
 
       # XML Schema "date" types
       # @api private

shale.gemspec

@@ -26,5 +26,5 @@ Gem::Specification.new do |spec|
   spec.bindir = 'exe'
   spec.executables = 'shaleb'
 
-  spec.required_ruby_version = '>= 2.6.0'
+  spec.required_ruby_version = '>= 3.0.0'
 end