require 'patternmatching/version'
require 'patternmatching/pattern'

module PatternMatching
  # The module is only for showing example docs.
  #== Using module
  # # If installed from rubygems
  # require "rubygems"
  # gem "patternmatching"
  # 
  # # for use 
  # require "patternmatching"
  #
  #== Structured data example
  # val = 200
  # code = PatternMatching.build {plus(mul(100, 100), val)}
  #
  #== Partial func example
  # class Calc
  #   extend PatternMatching
  # 
  #   func(:calcm).seems as {plus(:a, :b)} do
  #     calcm(a) + calcm(b)
  #   end
  #   func(:calcm).seems as {mul(:a, :b)} do
  #     calcm(a) * calcm(b)
  #   end
  #   func(:calcm).seems as {:value} do
  #     value
  #   end
  # end
  # 
  # p Calc.new.calcm(code)
  #
  #== Another partial style method example
  # class CalcX
  #   extend PatternMatching
  #  
  #   func(:calcx) do
  #     seems as {plus(:a, :b)} do
  #       calcx(a) + calcx(b)
  #     end
  #     seems as {mul(:a, :b)} do
  #       calcx(a) * calcx(b)
  #     end
  #   end
  #   func(:calcx).seems as {:value} do
  #     value
  #   end
  # end
  # 
  # p CalcX.new.calcx(code)
  #
  #== Pattern matching example
  # include PatternMatching
  # 
  # def calc(code)
  #   make(code) {
  #     seems as {plus(:a, :b)} do calc(a) + calc(b) end
  #     seems as {mul(:a, :b)} do  calc(a) * calc(b) end
  #     seems something do code end
  #   }
  # end
  # 
  # p calc(code)
  #
  #== Enumerable matching example
  # is = build { exact([1,2,3,4,5]) }
  # make is do
  #   seems as {exact([:a,:b, _!(:c)])} do
  #     puts a.to_s + ", " + b.to_s  + " and " + c.to_s 
  #   end
  #   seems something do
  #     puts "not matched"
  #   end
  # end
  #
  #== Hash to Hash matching example
  # dict = build { {:name => "Taro", :age => 5} }
  # make dict do
  #   seems as {{:name => :name}} do
  #     puts "He is " + name
  #   end
  #   seems something do
  #     puts "no name"
  #   end
  # end
  #
  #== Hash to non-Hash object matching example
  # class Person
  #   def initialize(name, age)
  #     @name = name
  #     @age = age
  #   end
  #   attr :name
  #   attr :age
  # end
  # 
  # make Person.new("Jiro", 3) do
  #   seems as {{:name => :name}} do
  #     puts "He is " + name
  #   end
  #   seems something do
  #     puts "no name"
  #   end
  # end
  #
  module EXAMPLES
  end
end