Initial commit.

.gitignore

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+*.gem
+*.rbc
+.bundle
+.config
+.yardoc
+Gemfile.lock
+InstalledFiles
+_yardoc
+coverage
+doc/
+lib/bundler/man
+pkg
+rdoc
+spec/reports
+test/tmp
+test/version_tmp
+tmp
+tags

Gemfile

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+source 'https://rubygems.org'
+
+# Specify your gem's dependencies in law_of_demeter_violator.gemspec
+gemspec

LICENSE

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+Copyright (c) 2012 Gabe Berke-Williams
+
+MIT License
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

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+# Law Of Demeter Violator
+
+`user.name` is for sissies who think patterns are cool. You and me, we know that
+the Gang of Four were [communists](http://en.wikipedia.org/wiki/Gang_of_four).
+Let's do `user.name.name` instead.
+
+## Installation
+
+Add this line to your application's Gemfile:
+
+    gem 'law_of_demeter_violator'
+
+And then execute:
+
+    $ bundle
+
+Or install it yourself as:
+
+    $ gem install law_of_demeter_violator
+
+## Usage
+
+You have two options.
+
+One: include the `LawOfDemeterViolator` module in your class, at the end:
+
+    class BadIdea
+      def meth1
+      end
+
+      include LawOfDemeterViolator
+    end
+
+Unfortunately, it has to be at the end of the class definition.
+
+Or option 2: use the global `Violate` method:
+
+    Violate(BadIdea)
+
+## Contributing
+
+1. Fork it
+2. Create your feature branch (`git checkout -b my-new-feature`)
+3. Commit your changes (`git commit -am 'Added some feature'`)
+4. Push to the branch (`git push origin my-new-feature`)
+5. Create new Pull Request

Rakefile

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+#!/usr/bin/env rake
+require "bundler/gem_tasks"
+
+require "rspec/core/rake_task"
+
+RSpec::Core::RakeTask.new
+
+task :default => :spec

law_of_demeter_violator.gemspec

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+# -*- encoding: utf-8 -*-
+require File.expand_path('../lib/law_of_demeter_violator/version', __FILE__)
+
+Gem::Specification.new do |gem|
+  gem.authors       = ["Gabe Berke-Williams"]
+  gem.email         = ["gabe@thoughtbot.com"]
+  gem.description   = %q{Violate the Law of Demeter hardcore with this too-easy-to-use library.}
+  gem.summary       = %q{Violate the Law of Demeter hardcore with this too-easy-to-use library.}
+  gem.homepage      = ""
+
+  gem.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
+  gem.files         = `git ls-files`.split("\n")
+  gem.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")
+  gem.name          = "law_of_demeter_violator"
+  gem.require_paths = ["lib"]
+  gem.version       = LawOfDemeterViolator::VERSION
+
+  gem.add_development_dependency("rspec", "~> 2.0")
+  gem.add_development_dependency("bourne", "~> 1.0")
+end

lib/law_of_demeter_violator.rb

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+require "law_of_demeter_violator/violator"
+require "law_of_demeter_violator/global_method"
+require "law_of_demeter_violator/version"
+
+module LawOfDemeterViolator
+  def self.included(base)
+    violator = Violator.new(base)
+    violator.violate
+  end
+end

lib/law_of_demeter_violator/global_method.rb

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+def Violate(object)
+  violator = LawOfDemeterViolator::Violator.new(object)
+  violator.violate
+end

lib/law_of_demeter_violator/version.rb

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+module LawOfDemeterViolator
+  VERSION = "0.0.1"
+end

lib/law_of_demeter_violator/violator.rb

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+require "ostruct"
+
+module LawOfDemeterViolator
+  class Violator
+    def initialize(class_to_be_violated)
+      @class_to_be_violated = class_to_be_violated
+    end
+
+    def violate
+      methods_to_violate.each do |original_method_name|
+        unviolated_method_name = :"__unviolated_#{original_method_name}"
+        @class_to_be_violated.class_eval do
+          # First, save the unviolated method.
+          alias_method(unviolated_method_name, original_method_name)
+
+          # # Then, remove the unviolated method. It's still saved via the call to
+          # alias_method.
+          remove_method(original_method_name)
+
+          # Now, define a new method with the same name. It returns an OpenStruct with one key,
+          # the original method name. So obj.user is now obj.user.user.
+          # Pretty sure |*args| is 1.9-only
+          define_method(original_method_name) do |*args|
+            original_value = __send__(unviolated_method_name, *args)
+            OpenStruct.new(original_method_name => original_value)
+          end
+        end
+      end
+    end
+
+    def methods_to_violate
+      @class_to_be_violated.instance_methods(false)
+    end
+  end
+end

spec/law_of_demeter_violator/global_method_spec.rb

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+require 'spec_helper'
+
+describe "the global Violate method" do
+  it "violates the given class" do
+    define_class("Greeter") do
+      def hello
+        "hello"
+      end
+    end
+
+    Violate(Greeter)
+    violated_instance = Greeter.new
+
+    violated_instance.hello.hello.should == "hello"
+  end
+end

spec/law_of_demeter_violator/violator_spec.rb

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+require "spec_helper"
+
+describe LawOfDemeterViolator::Violator do
+  it "violates methods that don't take arguments" do
+    define_class("Something") do
+      def hello
+        "hello"
+      end
+    end
+
+    violator = LawOfDemeterViolator::Violator.new(Something)
+    violator.violate
+
+    Something.new.hello.hello.should == "hello"
+  end
+
+  it "violates methods that take arguments" do
+    define_class("ClassWithMethodWithArguments") do
+      def name_plus(extra_argument)
+        "Bob #{extra_argument}"
+      end
+    end
+
+    violator = LawOfDemeterViolator::Violator.new(ClassWithMethodWithArguments)
+    violator.violate
+
+    violated_instance = ClassWithMethodWithArguments.new
+    violated_instance.name_plus("Viola").name_plus.should == "Bob Viola"
+  end
+
+  it "does not violate methods from parent classes" do
+    define_class("Parent") do
+      def parent_method
+        "parent"
+      end
+    end
+
+    define_class("Child", Parent) do
+      def child_method
+      end
+    end
+
+    violator = LawOfDemeterViolator::Violator.new(Child)
+    violator.violate
+
+    Child.new.parent_method.should == "parent"
+  end
+end

spec/law_of_demeter_violator_spec.rb

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+require "spec_helper"
+
+describe LawOfDemeterViolator do
+  it "violates the Law of Demeter hardcore" do
+    define_class("ViolatedGreeter") do
+      def hello
+        "hello"
+      end
+
+      include LawOfDemeterViolator
+    end
+
+    # include_violator_in(Greeter)
+    violated_instance = ViolatedGreeter.new
+
+    violated_instance.hello.hello.should == "hello"
+  end
+
+  def include_violator_in(a_class)
+    a_class.send(:include, LawOfDemeterViolator)
+  end
+end

spec/spec_helper.rb

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+$LOAD_PATH << File.join(File.dirname(__FILE__), "..", "lib")
+
+require "rspec"
+require "law_of_demeter_violator"
+require "bourne"
+
+Dir["spec/support/**/*.rb"].each { |f| require File.expand_path(f) }
+
+RSpec.configure do |config|
+  config.mock_framework = :mocha
+end

spec/support/macros/define_constant.rb

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+module DefineConstantMacros
+  def define_class(path, base = Object, &block)
+    namespace, class_name = *constant_path(path)
+    klass = Class.new(base)
+    namespace.const_set(class_name, klass)
+    klass.class_eval(&block) if block_given?
+    @defined_constants << path
+    klass
+  end
+
+  def constant_path(constant_name)
+    names = constant_name.split('::')
+    class_name = names.pop
+    namespace = names.inject(Object) { |result, name| result.const_get(name) }
+    [namespace, class_name]
+  end
+
+  def default_constants
+    @defined_constants ||= []
+    @created_tables    ||= []
+  end
+
+  def clear_generated_constants
+    @defined_constants.reverse.each do |path|
+      namespace, class_name = *constant_path(path)
+      namespace.send(:remove_const, class_name)
+    end
+
+    @defined_constants.clear
+  end
+end
+
+RSpec.configure do |config|
+  config.include DefineConstantMacros
+
+  config.before do
+    default_constants
+  end
+
+  config.after do
+    clear_generated_constants
+  end
+end