Refactor project boilerplate

* Use rspec2 instead of test unit
  to_source will be mutated with mutant soon. As mutant does only have
  an rspec2 compatible runner.
* Introuce metrics
* Bring code to 100% yard coverage
* Add multiple assignment support

.rspec

@@ -0,0 +1 @@
+--color

Gemfile

@@ -1,5 +1,36 @@
-source "http://rubygems.org"
+source 'https://rubygems.org'
 
-# Specify your gem's dependencies in to_source.gemspec
 gemspec
-gem 'rake'
+
+gem 'immutable', :git => 'https://github.com/dkubb/immutable.git', :ref => '4a4b7ddd138a32944fa0ddaff8412490cf9dd875'
+gem 'abstract',  :git => 'https://github.com/mbj/abstract.git'
+
+# Remove git version once original to_source is updated
+#gem 'to_source', :git => 'https://github.com/mbj/to_source'
+#gem 'to_source', :git => 'https://github.com/mbj/to_source.git'
+gem 'to_source', :path => '../to_source'
+
+group :development do
+  gem 'rake',    '~> 0.9.2'
+  gem 'yard',    '~> 0.8.1'
+  gem 'rspec',   '~> 2'
+  # Remove this once https://github.com/nex3/rb-inotify/pull/20 is solved.
+  # This patch makes rb-inotify a nice player with listen so it does not poll.
+  gem 'rb-inotify', :git => 'https://github.com/mbj/rb-inotify'
+end
+
+group :guard do
+  gem 'guard',         '~> 1.3.1'
+  gem 'guard-bundler', '~> 1.0.0'
+  gem 'guard-rspec',   '~> 1.2.0'
+end
+
+group :metrics do
+  gem 'flay',            '~> 1.4.2'
+  gem 'flog',            '~> 2.5.1'
+  gem 'reek',            '~> 1.2.8', :git => 'https://github.com/dkubb/reek.git'
+  gem 'roodi',           '~> 2.1.0'
+  gem 'yardstick',       '~> 0.5.0'
+  gem 'yard-spellcheck', '~> 0.1.5'
+  gem 'pelusa',          '~> 0.2.1'
+end

Guardfile

@@ -0,0 +1,18 @@
+# encoding: utf-8
+
+guard :bundler do
+  watch('Gemfile')
+end
+
+guard :rspec, :version => 2 do
+  # run all specs if the spec_helper or supporting files files are modified
+  watch('spec/spec_helper.rb')                      { 'spec' }
+  watch(%r{\Aspec/(?:lib|support|shared)/.+\.rb\z}) { 'spec' }
+
+  # run unit specs if associated lib code is modified
+  watch(%r{\Alib/(.+)\.rb\z})                                         { |m| Dir["spec/unit/#{m[1]}"] }
+  watch("lib/#{File.basename(File.expand_path('../', __FILE__))}.rb") { 'spec'                       }
+
+  # run a spec if it is modified
+  watch(%r{\Aspec/(?:unit|integration)/.+_spec\.rb\z})
+end

Rakefile

@@ -1,10 +1,6 @@
-require "bundler/gem_tasks"
+require 'rake'
 
-require 'rake/testtask'
-Rake::TestTask.new do |t|
-  t.libs << "test"
-  t.test_files = FileList['test/**/*_test.rb']
-  t.verbose = true
-end
+FileList['tasks/**/*.rake'].each { |task| import task }
 
-task :default => :test
+desc 'Default: run all specs'
+task :default => :spec

TODO

@@ -0,0 +1,3 @@
+* Fix parsing errors from ruby parser
+  It breaks on def $keyword.
+* Do a metric driven refactor once flay flog and friends work.

config/flay.yml

@@ -0,0 +1,3 @@
+---
+threshold: 18
+total_score: 296

config/flog.yml

@@ -0,0 +1,2 @@
+---
+threshold: 14.4

config/roodi.yml

@@ -0,0 +1,26 @@
+---
+AbcMetricMethodCheck:
+  score: 12.2
+AssignmentInConditionalCheck:    {}
+CaseMissingElseCheck:            {}
+ClassLineCountCheck:
+  line_count: 324
+ClassNameCheck:                  
+  pattern: !ruby/regexp /\A(?:[A-Z]+|[A-Z][a-z](?:[A-Z]?[a-z])+)\z/
+ClassVariableCheck:              {}
+CyclomaticComplexityBlockCheck:
+  complexity: 2
+CyclomaticComplexityMethodCheck:
+  complexity: 4
+EmptyRescueBodyCheck:            {}
+ForLoopCheck:                    {}
+MethodLineCountCheck:
+  line_count: 9
+MethodNameCheck:
+  pattern: !ruby/regexp /\A(?:[a-z\d](?:_?[a-z\d])+[?!=]?|\[\]=?|==|<=>|<<|[+*&|-])\z/
+ModuleLineCountCheck:
+  line_count: 327
+ModuleNameCheck:
+  pattern: !ruby/regexp /\A(?:[A-Z]+|[A-Z][a-z](?:[A-Z]?[a-z])+)\z/
+ParameterNumberCheck:
+  parameter_count: 3

config/site.reek

@@ -0,0 +1,93 @@
+---
+UncommunicativeParameterName:
+  accept: []
+  exclude: []
+  enabled: true
+  reject:
+  - !ruby/regexp /^.$/
+  - !ruby/regexp /[0-9]$/
+  - !ruby/regexp /[A-Z]/
+LargeClass:
+  max_methods: 10
+  exclude: 
+  - "Mutant::Matcher::Method" # 13 methods
+  enabled: true
+  max_instance_variables: 3
+UncommunicativeMethodName:
+  accept: []
+  exclude: []
+  enabled: true
+  reject:
+  - !ruby/regexp /^[a-z]$/
+  - !ruby/regexp /[0-9]$/
+  - !ruby/regexp /[A-Z]/
+LongParameterList:
+  max_params: 2
+  exclude: 
+  - "Mutant::Context::Constant#initialize" # 3 params
+  enabled: true
+  overrides: {}
+FeatureEnvy:
+  exclude: []
+  enabled: true
+ClassVariable:
+  exclude: []
+  enabled: true
+BooleanParameter:
+  exclude: []
+  enabled: true
+IrresponsibleModule:
+  exclude: []
+  enabled: true
+UncommunicativeModuleName:
+  accept: []
+  exclude: []
+  enabled: true
+  reject:
+  - !ruby/regexp /^.$/
+  - !ruby/regexp /[0-9]$/
+NestedIterators:
+  ignore_iterators: []
+  exclude: []
+  enabled: true
+  max_allowed_nesting: 1
+LongMethod:
+  max_statements: 6
+  exclude: []
+  enabled: true
+Duplication:
+  allow_calls: []
+  exclude: []
+  enabled: true
+  max_calls: 1
+UtilityFunction:
+  max_helper_calls: 0
+  exclude: []
+  enabled: true
+Attribute:
+  exclude: []
+  enabled: false
+UncommunicativeVariableName:
+  accept: []
+  exclude: []
+  enabled: true
+  reject:
+  - !ruby/regexp /^.$/
+  - !ruby/regexp /[0-9]$/
+  - !ruby/regexp /[A-Z]/
+SimulatedPolymorphism:
+  exclude: []
+  enabled: true
+  max_ifs: 1
+DataClump:
+  exclude: []
+  enabled: true
+  max_copies: 2
+  min_clump_size: 2
+ControlCouple:
+  exclude: []
+  enabled: true
+LongYieldList:
+  max_params: 1
+  exclude: []
+  enabled: true

config/yardstick.yml

@@ -0,0 +1,2 @@
+---
+threshold: 100

lib/to_source.rb

@@ -1,13 +1,17 @@
-require "to_source/version"
-require "to_source/visitor"
+require 'to_source/version'
+require 'to_source/visitor'
 
+# Namespace of library
 module ToSource
-  # Public: Converts the node back to its original source code.
+  # Convert node to string
   #
-  # Returns the String output.
-  def to_source
-    Visitor.run(self)
+  # @param [Rubinius::AST::Node] node
+  #
+  # @return [String]
+  #
+  # @api private
+  #
+  def self.to_source(node)
+    Visitor.run(node)
   end
 end
-
-Rubinius::AST::Node.send :include, ToSource

lib/to_source/version.rb

@@ -1,3 +1,3 @@
 module ToSource
-  VERSION = "0.1.3"
+  VERSION = '0.1.3'
 end