Move old annotate code into AnnotateRb namespace (#10)

This PR has a lot of changes and I've tried to make commits as discrete
and clear as possible.

A result of this change is that rake tasks and the executable most
likely won't work.

Author: drwl

exe/annotate

@@ -14,30 +14,21 @@ end
 here = File.expand_path(File.dirname __FILE__)
 $LOAD_PATH << "#{here}/../lib"
 
-require 'annotate'
-require 'annotate/parser'
+require 'annotate_rb'
 
-Annotate.bootstrap_rake
+AnnotateRb::OldAnnotate.bootstrap_rake
 
-# Annotate::Parser.parse takes in ARGV
-# - Parses it and writes stuff to ENV
-# - Returns some in a hash as seen below, this script will exit if `:exit` is defined
-options_result = Annotate::Parser.parse(ARGV)
+options = ::AnnotateRb::Options.from({}, {})
 
-exit if options_result[:exit]
+if options[:models]
+  # Eager load Models when we're annotating models
+  AnnotateRb::OldAnnotate.eager_load(options)
 
-# Not sure what this does yet
-options = Annotate.setup_options(
-  # .setup_options takes in starting options. It looks like :is_rake is used later down the road so we want to capture
-  # if it was done via rake task or not.
-  #
-  # Looks like it's set in lib/tasks/annotate*.rake files
-  is_rake: ENV['is_rake'] && !ENV['is_rake'].empty?
-)
-
-# Eager load Models when we're annotating models
-Annotate.eager_load(options) if Annotate::Helpers.include_models?
+  puts "Annotating models"
+  AnnotateRb::ModelAnnotator::Annotator.send(options[:target_action], options)
+end
 
-# options_result[:target_action] has possible values of: [:do_annotations, :remove_annotations]
-AnnotateModels.send(options_result[:target_action], options) if Annotate::Helpers.include_models?
-AnnotateRoutes.send(options_result[:target_action], options) if Annotate::Helpers.include_routes?
+if options[:routes]
+  puts "Annotating routes"
+  AnnotateRb::RouteAnnotator::Annotator.send(options[:target_action], options)
+end