Draft some specs and code

.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

Gemfile

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

LICENSE

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+Copyright (c) 2012 JH. Chabran
+
+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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+# Vintner
+
+TODO: Write a gem description
+
+## Installation
+
+Add this line to your application's Gemfile:
+
+    gem 'vintner'
+
+And then execute:
+
+    $ bundle
+
+Or install it yourself as:
+
+    $ gem install vintner
+
+## Usage
+
+TODO: Write usage instructions here
+
+## Contributing
+
+1. Fork it
+2. Create your feature branch (`git checkout -b my-new-feature`)
+3. Commit your changes (`git commit -am 'Add 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(:spec)
+task :default => :spec

lib/vintner.rb

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+require "vintner/version"
+require "vintner/property"
+require "vintner/representer"
+
+module Vintner
+  # Your code goes here...
+end

lib/vintner/property.rb

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+module Vintner
+  class Property
+    attr_reader :name
+
+    def initialize name, &block
+      @name = name
+
+      instance_eval &block if block_given?
+    end
+
+    def import model, value
+      yield mode, value
+    end
+
+    def export model
+      yield model
+    end
+
+    def getter_defined?
+      !!@getter
+    end
+
+    def setter_defined?
+      !!@setter
+    end
+
+    private
+    def get &block
+      @getter = block
+    end
+
+    def set &block
+      @setter = block
+    end
+  end
+end

lib/vintner/representer.rb

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+require 'active_support/concern'
+require 'active_support/core_ext'
+
+module Vintner
+  module Representer
+    extend ::ActiveSupport::Concern
+
+    module ClassMethods
+      mattr_reader :properties, :collections
+
+      def property name, &block
+        @@properties ||= {}
+
+        @@properties[name] = Property.new(name, &block)
+      end
+
+      def collection name, representer
+        @@collections ||= {}
+
+        raise "TODO"
+      end
+
+      def representation &block
+
+      end
+    end
+  end
+end

lib/vintner/version.rb

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+module Vintner
+  VERSION = "0.0.1"
+end

spec/spec_helper.rb

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+require 'vintner'
+
+RSpec.configure do |config|
+end

spec/vintner/representer_spec.rb

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+require 'spec_helper'
+
+module Vintner
+  describe Representer do
+    it "should allow to declare a simple property" do
+      class Dummy
+        include Vintner::Representer
+
+        property :title
+      end
+
+      Dummy.properties.should include(:title)
+    end
+
+    it "should allow to declare a property with a getter" do
+      class Dummy
+        include Vintner::Representer
+
+        property :title do
+          get do |model|
+            model.formatted_title
+          end
+        end
+      end
+
+
+      Dummy.properties[:title].getter_defined?.should be(true)
+    end
+
+    it "should allow to declare a property with a getter" do
+      class Dummy
+        include Vintner::Representer
+
+        property :title do
+          set do |model, value|
+            model.formatted_title = value
+          end
+        end
+      end
+
+      Dummy.properties[:title].setter_defined?.should be(true)
+    end
+  end
+end

vintner.gemspec

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+# -*- encoding: utf-8 -*-
+require File.expand_path('../lib/vintner/version', __FILE__)
+
+Gem::Specification.new do |gem|
+  gem.authors       = ["JH. Chabran"]
+  gem.email         = ["[email protected]"]
+  gem.description   = %q{TODO: Write a gem description}
+  gem.summary       = %q{TODO: Write a gem summary}
+  gem.homepage      = ""
+
+  gem.files         = `git ls-files`.split($\)
+  gem.executables   = gem.files.grep(%r{^bin/}).map{ |f| File.basename(f) }
+  gem.test_files    = gem.files.grep(%r{^(test|spec|features)/})
+  gem.name          = "vintner"
+  gem.require_paths = ["lib"]
+  gem.version       = Vintner::VERSION
+
+  gem.add_dependency 'active_support'
+  gem.add_dependency 'i18n'
+  gem.add_development_dependency 'rspec', '~> 2.6'
+end