implement Nibbler#to_hash

lib/nibbler.rb

@@ -42,6 +42,15 @@ def parse
     self
   end
 
+  def to_hash
+    converter = lambda { |obj| obj.respond_to?(:to_hash) ? obj.to_hash : obj }
+    self.class.rules.keys.inject({}) { |hash, name|
+      value = send(name)
+      hash[name.to_sym] = Array === value ? value.map(&converter) : converter[value]
+      hash
+    }
+  end
+
   protected
 
   # `delegate` is optional, but should respond to `call` or `parse`
@@ -180,6 +189,16 @@ def search(selector)
       @blog.navigation_items.should == %w[Home About Help]
     end
 
+    it "should convert to hash" do
+      hash = @blog.to_hash
+      hash[:navigation_items].should == %w[Home About Help]
+      hash[:title].should == "Maximum awesome"
+      article = hash[:articles].first
+      article[:title] == "First article"
+      article.key?(:link).should be_true
+      article[:link].should be_nil
+    end
+
     it "should have title, pubdate for first article" do
       article = @blog.articles[0]
       article.title.should == 'First article'