Add erb filter

lib/hamlit/compilers/filter.rb

@@ -1,6 +1,7 @@
 require 'hamlit/concerns/included'
 require 'hamlit/concerns/registerable'
 require 'hamlit/filters/css'
+require 'hamlit/filters/erb'
 require 'hamlit/filters/escaped'
 require 'hamlit/filters/javascript'
 require 'hamlit/filters/less'
@@ -22,6 +23,7 @@ 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

lib/hamlit/filters/erb.rb

@@ -0,0 +1,11 @@
+require 'hamlit/filters/tilt'
+
+module Hamlit
+  module Filters
+    class Erb < Filters::Tilt
+      def compile(lines)
+        compile_with_tilt('erb', lines.join("\n"), [], indent_width: 0)
+      end
+    end
+  end
+end

lib/hamlit/parser.rb

@@ -22,7 +22,8 @@ module Hamlit
     include Parsers::Text
     include Parsers::Whitespace
 
-    SKIP_NEWLINE_EXPS = %i[newline code multi].freeze
+    SKIP_NEWLINE_EXPS    = %i[newline code multi].freeze
+    SKIP_NEWLINE_FILTERS = %w[ruby markdown erb].freeze
 
     define_options :format
 
@@ -111,9 +112,12 @@ module Hamlit
     def skip_newline?(ast)
       SKIP_NEWLINE_EXPS.include?(ast.first) ||
         (ast[0..1] == [:haml, :doctype]) ||
-        (ast[0..2] == [:haml, :filter, 'ruby']) ||
-        (ast[0..2] == [:haml, :filter, 'markdown']) ||
+        newline_skip_filter?(ast) ||
         @outer_removal.include?(@current_indent)
     end
+
+    def newline_skip_filter?(ast)
+      ast[0..1] == [:haml, :filter] && SKIP_NEWLINE_FILTERS.include?(ast[2])
+    end
   end
 end

spec/hamlit/filters/erb_spec.rb

@@ -0,0 +1,16 @@
+describe Hamlit::Filters::Erb do
+  describe '#compile' do
+    it 'renders erb filter' do
+      assert_render(<<-HAML, <<-HTML)
+        :erb
+          <% if  true %>
+          ok
+          <% else  %>
+          ng
+          <% end  %>
+      HAML
+        ok
+      HTML
+    end
+  end
+end