options.rb in undercover-0.2.0

- old
+ new

@@ -15,11 +15,11 @@
     OUTPUT_FORMATTERS = [
       OUTPUT_STDOUT = :stdout, # outputs warnings to stdout with exit 1
       # OUTPUT_CIRCLEMATOR = :circlemator # posts warnings as review comments
     ].freeze
 
-    attr_accessor :lcov, :path, :git_dir, :compare
+    attr_accessor :lcov, :path, :git_dir, :compare, :syntax_version
 
     def initialize
       # TODO: use run modes
       # TODO: use formatters
       @run_mode = RUN_MODE_DIFF_STRICT
@@ -27,11 +27,11 @@
       # set defaults
       self.path = '.'
       self.git_dir = '.git'
     end
 
-    # rubocop:disable Metrics/MethodLength
+    # rubocop:disable Metrics/MethodLength, Metrics/AbcSize
     def parse(args)
       OptionParser.new do |opts|
         opts.banner = 'Usage: undercover [options]'
 
         opts.on_tail('-h', '--help', 'Prints this help') do
@@ -46,19 +46,19 @@
 
         lcov_path_option(opts)
         project_path_option(opts)
         git_dir_option(opts)
         compare_option(opts)
+        ruby_syntax_option(opts)
         # TODO: parse dem other options and assign to self
         # --quiet (skip progress bar)
         # --exit-status (do not print report, just exit)
-        # --ruby-version (string, like '2.4.4', how to support in parser?)
       end.parse(args)
       guess_lcov_path unless lcov
       self
     end
-    # rubocop:enable Metrics/MethodLength
+    # rubocop:enable Metrics/MethodLength, Metrics/AbcSize
 
     private
 
     def lcov_path_option(parser)
       parser.on('-l', '--lcov path', 'LCOV report file path') do |path|
@@ -81,9 +81,17 @@
 
     def compare_option(parser)
       desc = 'Generate coverage warnings for all changes after `ref`'
       parser.on('-c', '--compare ref', desc) do |ref|
         self.compare = ref
+      end
+    end
+
+    def ruby_syntax_option(parser)
+      versions = Imagen::AVAILABLE_RUBY_VERSIONS.sort.join(', ')
+      desc = "Ruby syntax version, one of: #{versions}"
+      parser.on('-r', '--ruby-synax ver', desc) do |version|
+        self.syntax_version = version.strip
       end
     end
 
     def guess_lcov_path
       cwd = Pathname.new(File.expand_path(path))