Add coffee filter

hamlit.gemspec

@@ -23,6 +23,7 @@ Gem::Specification.new do |spec|
   spec.add_dependency "tilt"
   spec.add_development_dependency "benchmark-ips"
   spec.add_development_dependency "bundler"
+  spec.add_development_dependency "coffee-script"
   spec.add_development_dependency "erubis"
   spec.add_development_dependency "faml"
   spec.add_development_dependency "haml"

lib/hamlit/compilers/filter.rb

@@ -1,5 +1,6 @@
 require 'hamlit/concerns/included'
 require 'hamlit/concerns/registerable'
+require 'hamlit/filters/coffee'
 require 'hamlit/filters/css'
 require 'hamlit/filters/erb'
 require 'hamlit/filters/escaped'
@@ -22,17 +23,19 @@ module Hamlit
 
         define_options :format
 
-        register :css,        Filters::Css
-        register :erb,        Filters::Erb
-        register :escaped,    Filters::Escaped
-        register :javascript, Filters::Javascript
-        register :less,       Filters::Less
-        register :markdown,   Filters::Markdown
-        register :plain,      Filters::Plain
-        register :preserve,   Filters::Preserve
-        register :ruby,       Filters::Ruby
-        register :sass,       Filters::Sass
-        register :scss,       Filters::Scss
+        register :coffee,       Filters::Coffee
+        register :coffeescript, Filters::Coffee
+        register :css,          Filters::Css
+        register :erb,          Filters::Erb
+        register :escaped,      Filters::Escaped
+        register :javascript,   Filters::Javascript
+        register :less,         Filters::Less
+        register :markdown,     Filters::Markdown
+        register :plain,        Filters::Plain
+        register :preserve,     Filters::Preserve
+        register :ruby,         Filters::Ruby
+        register :sass,         Filters::Sass
+        register :scss,         Filters::Scss
       end
 
       def on_haml_filter(name, lines)

lib/hamlit/filters/coffee.rb

@@ -0,0 +1,12 @@
+require 'hamlit/filters/tilt'
+
+module Hamlit
+  module Filters
+    class Coffee < Filters::Tilt
+      def compile(lines)
+        ast = [:html, :tag, 'script', [:html, :attrs]]
+        compile_with_tilt('coffee', lines.join("\n"), ast)
+      end
+    end
+  end
+end

spec/hamlit/filters/coffee_spec.rb

@@ -0,0 +1,41 @@
+describe Hamlit::Filters::Coffee do
+  describe '#compile' do
+    it 'renders coffee filter' do
+      assert_render(<<-HAML, <<-HTML)
+        :coffee
+          foo = ->
+            alert('hello')
+      HAML
+        <script>
+          (function() {
+            var foo;
+          
+            foo = function() {
+              return alert('hello');
+            };
+          
+          }).call(this);
+        </script>
+      HTML
+    end
+
+    it 'renders coffeescript filter' do
+      assert_render(<<-HAML, <<-HTML)
+        :coffee
+          foo = ->
+            alert('hello')
+      HAML
+        <script>
+          (function() {
+            var foo;
+          
+            foo = function() {
+              return alert('hello');
+            };
+          
+          }).call(this);
+        </script>
+      HTML
+    end
+  end
+end