Create coffee script filter

hamlit.gemspec

@@ -21,8 +21,10 @@ Gem::Specification.new do |spec|
 
   spec.add_dependency 'haml', '~> 4.0'
   spec.add_dependency 'temple', '~> 0.7.6'
+  spec.add_dependency 'tilt', '~> 2.0'
 
   spec.add_development_dependency 'bundler', '~> 1.10'
+  spec.add_development_dependency 'coffee-script'
   spec.add_development_dependency 'faml', '>= 0.3.3'
   spec.add_development_dependency 'minitest-reporters', '~> 1.1'
   spec.add_development_dependency 'rails', '>= 4.0.0'

lib/hamlit/filters.rb

@@ -1,4 +1,6 @@
 require 'hamlit/filters/base'
+require 'hamlit/filters/tilt_base'
+require 'hamlit/filters/coffee'
 require 'hamlit/filters/css'
 require 'hamlit/filters/escaped'
 require 'hamlit/filters/javascript'
@@ -20,12 +22,14 @@ module Hamlit
       end
     end
 
-    register :css,        Css
-    register :escaped,    Escaped
-    register :javascript, Javascript
-    register :plain,      Plain
-    register :preserve,   Preserve
-    register :ruby,       Ruby
+    register :coffee,       Coffee
+    register :coffeescript, Coffee
+    register :css,          Css
+    register :escaped,      Escaped
+    register :javascript,   Javascript
+    register :plain,        Plain
+    register :preserve,     Preserve
+    register :ruby,         Ruby
 
     def initialize(options = {})
       @options = options

lib/hamlit/filters/coffee.rb

@@ -0,0 +1,15 @@
+require 'tilt'
+
+module Hamlit
+  class Filters
+    class Coffee < TiltBase
+      def compile(node)
+        temple = [:multi]
+        temple << [:static, "<script>\n".freeze]
+        temple << [:static, TiltBase.render('coffee', node.value[:text])]
+        temple << [:static, "</script>".freeze]
+        temple
+      end
+    end
+  end
+end

lib/hamlit/filters/tilt_base.rb

@@ -0,0 +1,12 @@
+module Hamlit
+  class Filters
+    class TiltBase < Base
+      class << self
+        def render(name, source)
+          text = ::Tilt["t.#{name}"].new { source }.render
+          text.gsub!(/^/, '  '.freeze)
+        end
+      end
+    end
+  end
+end

test/hamlit/filters/coffee_test.rb

@@ -3,7 +3,6 @@ describe Hamlit::Filters do
 
   describe '#compile' do
     it 'renders coffee filter' do
-      skip
       assert_render(<<-HAML, <<-HTML)
         :coffee
           foo = ->
@@ -23,9 +22,8 @@ describe Hamlit::Filters do
     end
 
     it 'renders coffeescript filter' do
-      skip
       assert_render(<<-HAML, <<-HTML)
-        :coffee
+        :coffeescript
           foo = ->
             alert('hello')
       HAML