Panda Complete

README.md

@@ -12,7 +12,7 @@ Meta Programming in Ruby
 #
 #class BadTerminator
 #  likes_to_protect []
-#  likes_to_destroy [:john_connor, :sarah_connor]
+###  likes_to_destroy [:john_connor, :sarah_connor]
 #end
 ```
 

compiletime.rb

@@ -0,0 +1,23 @@
+class WidgetFactory
+  def self.create!(klass)
+    klass.class_eval do
+      define_method :way_cool do
+        3.times {puts "My name is..."}
+        puts klass.name
+      end
+    end
+  end
+end
+
+module NamingAwesomeness
+
+  def self.included(klass) #gets called when you include a class
+    WidgetFactory.create!(klass)
+  end
+end
+
+class CompileTime
+ include NamingAwesomeness
+end
+
+CompileTime.new.way_cool

meta.rb

@@ -1,45 +1,50 @@
-# add a method at run time
+ # add a method at run time
 class SuperWo
 
-  def initialize(name)
-    @name = name
-  end
+def initialize(name)
+  @name = name
+end
 
-  def add_method_to_instance
-    instance_eval do
-      def cool!
-        puts "oh hai, I am the cool"
-      end
-    end 
+ def add_method_to_instance
+  instance_eval do
+    def cool!
+      puts "oh hello"
+    end
   end
-
-  def add_method_to_class
-    self.class.class_eval do
-      define_method :cool! do
-        puts "oh hai, I am the cool"
+ end
+
+#this is not being add to the entire class,
+#instance only available to the methd.   
+ def add_method_to_class
+   self.class.class_eval do
+     define_method :cool! do
+       puts "hello, world"  
       end
     end
-  end
+  end 
 
   def add_some_code_to_class(the_name, &block)
-    self.class.class_eval do
-      define_method the_name, block
+    self.class.class_eval do  #powering the meta 
+      define_method the_name, &block
     end
   end
 
 end
 
-wo = SuperWo.new("first")
-wo.add_method_to_instance
-wo.cool!
-
-second_wo = SuperWo.new("second")
-second_wo.add_method_to_instance
-second_wo.cool!
+=begin
+x = SuperWo.new
+x.add_method_to_class
+x.cool!
 
+y = SuperWo.new
+y.cool!
+=end
 
 third_wo = SuperWo.new("blue bell")
 third_wo.add_some_code_to_class :wow_wow do
   puts "#{@name} I am wow"
 end
 third_wo.wow_wow
+
+# able to access intance methods in the class
+

rakefile.rb

@@ -0,0 +1,13 @@
+require "rubygems"
+require "bundler/setup"
+
+require 'rspec/core/rake_task'
+
+desc 'Default: run specs.'
+task :default => :spec
+
+desc "Run specs"
+RSpec::Core::RakeTask.new do |t|
+  t.pattern = "**/*_spec.rb" # don't need this, it's default.
+  # Put spec opts in a file named .rspec in root
+end

spec/terminator_spec.rb

@@ -0,0 +1,64 @@
+
+require 'rspec'
+require 'rake'
+require "./terminator"
+
+
+  describe GoodTerminator do
+    it "should protect_john_connor" do
+        subject.protect_john_connor!
+        subject.current_mission.should eq("protect: john_connor")
+      end
+
+    it "should protect_sarah_connor" do
+        subject.protect_sarah_connor!
+        subject.current_mission.should eq("protect: sarah_connor")
+    end
+
+    it "should know if the Terminator protects a person" do
+        subject.protect_sarah_connor!
+        subject.protect?("sarah_connor").should eq(true)
+    end
+
+    it "should know if the Terminator is good" do
+        subject.protect_sarah_connor!
+        subject.good?.should eq(true)
+    end
+  end
+
+
+  describe BadTerminator do
+    it "should destroy_john_connor" do
+        subject.destroy_john_connor!
+        subject.current_mission.should eq("destroy: john_connor")
+    end 
+
+    it "should destroy_sarah_connor" do
+        subject.destroy_sarah_connor!
+        subject.current_mission.should eq("destroy: sarah_connor")
+    end 
+
+    it "should know if the Terminator destroys a person" do
+        subject.destroy_sarah_connor!
+        subject.protect?("sarah_connor").should eq(false)
+    end 
+
+    it "should know if the Terminator is bad" do
+        subject.destroy_sarah_connor!
+        subject.good?.should eq(false)
+    end
+  end
+
+
+
+
+
+
+
+
+
+
+
+
+
+

terminator.rb

@@ -1,7 +1,25 @@
 require "./terminatorable"
 
 class Terminator
+
   include Terminatorable
-  likes_to_protect [:john_connor, :sarah_connor]
+  good
+
+  def protect?(name)
+    current_mission == "protect: #{name}"
+  end
+
 end
 
+    class GoodTerminator < Terminator
+      likes_to_protect [{protect: [:john_connor, :sarah_connor] , destroy: [:john_connor, :sarah_connor]}]
+      likes_to_destroy [{protect: [:john_connor, :sarah_connor] , destroy: [:john_connor, :sarah_connor]}]
+    end
+
+    class BadTerminator < Terminator
+      likes_to_protect [{protect: [:john_connor, :sarah_connor] , destroy: [:john_connor, :sarah_connor]}]
+      likes_to_destroy [{protect: [:john_connor, :sarah_connor] , destroy: [:john_connor, :sarah_connor]}]
+    end
+
+
+

terminator_spec.rb

@@ -1,23 +1,64 @@
+
 require 'rspec'
+require 'rake'
 require "./terminator"
 
-describe Terminator do
-  it "should destroy_john_connor" do
-    subject.destroy_john_connor!
-    subject.current_mission.should eq("destroy: john_connor")
-  end
 
-  it "should protect_john_connor" do
-    subject.protect_john_connor!
-    subject.current_mission.should eq("protect: john_connor")
-  end
-  it "should destroy_sarah_connor" do
-    subject.destroy_sarah_connor!
-    subject.current_mission.should eq("destroy: sarah_connor")
+  describe GoodTerminator do
+    it "should protect_john_connor" do
+        subject.protect_john_connor!
+        subject.current_mission.should eq("protect: john_connor")
+      end
+
+    it "should protect_sarah_connor" do
+        subject.protect_sarah_connor!
+        subject.current_mission.should eq("protect: sarah_connor")
+    end
+
+    it "should know if the Terminator protects a person" do
+        subject.protect_sarah_connor!
+        subject.protect?("sarah_connor").should eq(true)
+    end
+
+    it "should know if the Terminator is good" do
+        subject.protect_sarah_connor!
+        subject.good?.should eq(true)
+    end
   end
 
-  it "should protect_sarah_connor" do
-    subject.protect_sarah_connor!
-    subject.current_mission.should eq("protect: sarah_connor")
+
+  describe BadTerminator do
+    it "should destroy_john_connor" do
+        subject.destroy_john_connor!
+        subject.current_mission.should eq("destroy: john_connor")
+    end 
+
+    it "should destroy_sarah_connor" do
+        subject.destroy_sarah_connor!
+        subject.current_mission.should eq("destroy: sarah_connor")
+    end 
+
+    it "should know if the Terminator destroys a person" do
+        subject.destroy_sarah_connor!
+        subject.protect?("sarah_connor").should eq(false)
+    end 
+
+    it "should know if the Terminator is bad" do
+        subject.destroy_sarah_connor!
+        subject.good?.should eq(false)
+    end
   end
-end
+
+
+
+
+
+
+
+
+
+
+
+
+
+

terminatorable.rb

@@ -1,19 +1,41 @@
+
+
+# when you include a module into a Ruby class, 
+# the instance methods in that module becomes
+# availabe as instance methods of the class.
+# multiple classes can inherit from a single module
+
 module Terminatorable
 
   module ClassMethods
-    def likes_to_protect(people=[])
-      ["destroy", "protect"].each do |mission_type|
-        people.each do |person|
-          define_method "#{mission_type}_#{person}!" do
-            @current_mission = "#{mission_type}: #{person}"
-          end
-        end
-      end
+
+    def likes_to_protect(people={}) 
+      people.first.fetch(:protect).each do |person|
+      #people.each do |person|
+        define_method "protect_#{person}!" do 
+          @current_mission = "protect: #{person}"
+        end  
+      end    
+    end
+
+    def likes_to_destroy(people=[]) 
+      people.first.fetch(:destroy).each do |person|
+        define_method "destroy_#{person}!" do 
+          @current_mission = "destroy: #{person}"
+        end  
+      end   
+    end
+
+  def good
+    define_method :good? do
+       @current_mission.include?("protect")
+
     end
   end
+end
 
   def self.included(klass)
-    attr_reader :current_mission
-    klass.extend Terminatorable::ClassMethods
+      attr_reader :current_mission
+    klass.extend Terminatorable::ClassMethods 
   end
-end
+end