Add simple handlers

Add a base handler class and a handler that processes `HostClassDefinition`
instances.

lib/puppetx/yardoc/yard/handlers.rb

@@ -0,0 +1,2 @@
+require_relative 'handlers/base'
+require_relative 'handlers/host_class_handler'

lib/puppetx/yardoc/yard/handlers/base.rb

@@ -0,0 +1,14 @@
+require 'puppetx/yardoc'
+require 'yard'
+require 'puppet/pops'
+
+module Puppetx::Yardoc::YARD::Handlers
+  class Base < YARD::Handlers::Base
+    include Puppet::Pops::Model # This allows handlers to match based on model classes.
+
+    def self.handles?(statement)
+      handlers.any? {|h| h == statement.type}
+    end
+
+  end
+end

lib/puppetx/yardoc/yard/handlers/host_class_handler.rb

@@ -0,0 +1,11 @@
+require_relative 'base'
+
+module Puppetx::Yardoc::YARD::Handlers
+  class HostClassHandler < Base
+    handles HostClassDefinition
+
+    process do
+      register YARD::CodeObjects::ClassObject.new(:root, statement.pops_obj.name)
+    end
+  end
+end