Sha256: e03512ef68e472d93894f1cf64198bc38e1d19b05ca2435b6a461d1f5b95b0a2
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Size: 1.53 KB
Versions: 128
Compression:
Stored size: 1.53 KB
Contents
#!/usr/bin/env ruby
require 'tins/xt'
$:.unshift 'examples'
require 'recipe_common'
class Cup < Unit; end
class Teaspoon < Unit; end
class Tablespoon < Unit; end
class Flour < Ingredient; end
class Bakingpowder < Ingredient; end
class Salt < Ingredient; end
class Egg < Ingredient; end
class Milk < Ingredient; end
class Butter < Ingredient; end
class Recipe < Tins::BlankSlate.with(:respond_to?, :instance_exec, :inspect, /^deflect/)
include Tins::Deflect
def initialize(&block)
@ingredients = []
deflector = Deflector.new do |number, id, name|
if unit = Unit.unit(name, number)
unit
else
ingredient = Ingredient.ingredient(name, number)
@ingredients << ingredient
end
end
deflect(Numeric, :method_missing, deflector) do
instance_exec(&block)
end
end
attr_reader :ingredients
def to_a
@ingredients
end
alias to_ary to_a
def to_s
to_a * "\n"
end
alias inspect to_s
def method_missing(name, *args)
name = name.to_s.gsub(/_/, '').capitalize
@ingredients << Object.const_get(name).new(*args)
end
end
class RecipeInterpreter
def recipe(&block)
Recipe.new(&block)
end
end
recipe_source = <<EOT
pancakes = recipe do
flour 2.cups
baking_powder 2.5.teaspoons
salt 0.5.teaspoon
egg 1
milk 1.5.cups
butter 2.tablespoons
end
EOT
pancakes = RecipeInterpreter.new.interpret(recipe_source)
puts pancakes
puts
def recipe(&block)
Recipe.new(&block)
end
pancakes = eval recipe_source
puts pancakes
Version data entries
128 entries across 114 versions & 8 rubygems