Add DSL for defining classes/modules as containers

bin/console

@@ -15,4 +15,11 @@ require_relative "../lib/fun-ruby"
 
 require_relative "../tooling/generators/module"
 
+class Container
+  extend F::Container::DSL
+
+  namespace :math do
+    f(:sum) { ->(x, y) { x + y}}
+  end
+end
 IRB.start(__FILE__)

lib/fun_ruby.rb

@@ -2,6 +2,7 @@
 
 require_relative "fun_ruby/container"
 require_relative "fun_ruby/container/define"
+require_relative "fun_ruby/container/dsl"
 
 # Top-level namespace
 module FunRuby

lib/fun_ruby/container/dsl.rb

@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+require "forwardable"
+
+module FunRuby
+  module Container
+    # Holds DSL for allowing using in classes/modules
+    module DSL
+      def_delegator :_fun_ruby_define_api, :function, :f, :namespace
+
+      def [](key)
+        _fun_ruby_resolve_api.call(key0)
+      end
+
+      private
+
+      def _fun_ruby_container
+        @_fun_ruby_container ||= Container.new(
+          Config.new(override: true)
+        )
+      end
+
+      def _fun_ruby_define_api
+        @_fun_ruby_define_api ||= Define.build(_fun_ruby_container)
+      end
+
+      def _fun_ruby_resolve_api
+        @_fun_ruby_resolve_api ||= Resolve.build(_fun_ruby_container)
+      end
+    end
+  end
+end