Use nested module declaration

src/kemal/base_log_handler.cr

@@ -1,5 +1,6 @@
-# All loggers must inherit from `Kemal::BaseLogHandler`.
-class Kemal::BaseLogHandler < HTTP::Handler
+module Kemal
+  # All loggers must inherit from `Kemal::BaseLogHandler`.
+  class Kemal::BaseLogHandler < HTTP::Handler
     def initialize
     end
 
@@ -9,4 +10,5 @@ class Kemal::BaseLogHandler < HTTP::Handler
 
     def write(message)
     end
+  end
 end

src/kemal/common_log_handler.cr

@@ -1,4 +1,5 @@
-class Kemal::CommonLogHandler < Kemal::BaseLogHandler
+module Kemal
+  class CommonLogHandler < Kemal::BaseLogHandler
     @handler : IO::FileDescriptor
     getter handler
 
@@ -30,4 +31,5 @@ class Kemal::CommonLogHandler < Kemal::BaseLogHandler
 
       "#{(millis * 1000).round(2)}µs"
     end
+  end
 end

src/kemal/middleware/ssl.cr

@@ -1,4 +1,5 @@
 module Kemal::Middleware
+  # This middleware adds SSL / TLS support.
   class SSL
     getter context
 

src/kemal/null_log_handler.cr

@@ -1,3 +1,5 @@
-# This is here to represent the logger corresponding to Null Object Pattern.
-class Kemal::NullLogHandler < Kemal::BaseLogHandler
+module Kemal
+  # This is here to represent the logger corresponding to Null Object Pattern.
+  class NullLogHandler < Kemal::BaseLogHandler
+  end
 end

src/kemal/param_parser.cr

@@ -1,11 +1,12 @@
 require "json"
 
-# ParamParser parses the request contents including query_params and body
-# and converts them into a params hash which you can within the environment
-# context.
-alias AllParamTypes = Nil | String | Int64 | Float64 | Bool | Hash(String, JSON::Type) | Array(JSON::Type)
+module Kemal
+  # ParamParser parses the request contents including query_params and body
+  # and converts them into a params hash which you can within the environment
+  # context.
+  alias AllParamTypes = Nil | String | Int64 | Float64 | Bool | Hash(String, JSON::Type) | Array(JSON::Type)
 
-class Kemal::ParamParser
+  class ParamParser
     URL_ENCODED_FORM = "application/x-www-form-urlencoded"
     APPLICATION_JSON = "application/json"
 
@@ -70,4 +71,5 @@ class Kemal::ParamParser
     def parse_part(part)
       HTTP::Params.parse(part || "")
     end
+  end
 end

src/kemal/route.cr

@@ -1,7 +1,8 @@
-# Route is the main building block of Kemal.
-# It takes 3 parameters: Method, path and a block to specify
-# what action to be done if the route is matched.
-class Kemal::Route
+module Kemal
+  # Route is the main building block of Kemal.
+  # It takes 3 parameters: Method, path and a block to specify
+  # what action to be done if the route is matched.
+  class Route
     getter handler
     @handler : HTTP::Server::Context -> String
     @method : String
@@ -9,4 +10,5 @@ class Kemal::Route
     def initialize(@method, @path : String, &handler : HTTP::Server::Context -> _)
       @handler = ->(context : HTTP::Server::Context) { handler.call(context).to_s }
     end
+  end
 end

src/kemal/route_handler.cr

@@ -1,9 +1,9 @@
-require "http/server"
 require "radix"
 
-# Kemal::RouteHandler is the main handler which handles all the HTTP requests. Routing, parsing, rendering e.g
-# are done in this handler.
-class Kemal::RouteHandler < HTTP::Handler
+module Kemal
+  # Kemal::RouteHandler is the main handler which handles all the HTTP requests. Routing, parsing, rendering e.g
+  # are done in this handler.
+  class RouteHandler < HTTP::Handler
     INSTANCE = new
 
     property tree
@@ -50,4 +50,5 @@ class Kemal::RouteHandler < HTTP::Handler
       node = radix_path method, path
       @tree.add node, route
     end
+  end
 end

src/kemal/static_file_handler.cr

@@ -1,11 +1,13 @@
-# Kemal::StaticFileHandler is used to serve static files(.js/.css/.png e.g).
-# This handler is on by default and you can disable it like.
-#
-#   serve_static false
-#
-class Kemal::StaticFileHandler < HTTP::StaticFileHandler
+module Kemal
+  # Kemal::StaticFileHandler is used to serve static files(.js/.css/.png e.g).
+  # This handler is on by default and you can disable it like.
+  #
+  #   serve_static false
+  #
+  class StaticFileHandler < HTTP::StaticFileHandler
     def call(context)
       return call_next(context) if context.request.path.not_nil! == "/"
       super
     end
+  end
 end

src/kemal/websocket_handler.cr

@@ -1,6 +1,7 @@
-# Kemal::WebSocketHandler is used for building a WebSocket route.
-# For each WebSocket route a new handler is created and registered to global handlers.
-class Kemal::WebSocketHandler < HTTP::WebSocketHandler
+module Kemal
+  # Kemal::WebSocketHandler is used for building a WebSocket route.
+  # For each WebSocket route a new handler is created and registered to global handlers.
+  class WebSocketHandler < HTTP::WebSocketHandler
     def initialize(@path : String, &@proc : HTTP::WebSocket, HTTP::Server::Context -> Void)
       Kemal.config.add_ws_handler self
     end
@@ -9,4 +10,5 @@ class Kemal::WebSocketHandler < HTTP::WebSocketHandler
       return call_next(context) unless context.request.path.not_nil! == @path
       super
     end
+  end
 end