Syncer#on now accepts a proc

spec/spec_helper.cr

@@ -1,7 +1,6 @@
 require "spec"
 require "../src/caridina"
 
-
 SYNC = %(
   {
     "next_batch": "s72595_4483_1934",

spec/syncer_spec.cr

@@ -2,7 +2,23 @@ require "../src/syncer"
 
 require "./spec_helper"
 
+def listener(event)
+  puts event
+end
+
 describe Caridina::Syncer do
+  it "accepts blocks" do
+    syncer = Caridina::Syncer.new
+    syncer.on(Caridina::Events::Message) do |event|
+      puts event
+    end
+  end
+
+  it "accepts proc" do
+    syncer = Caridina::Syncer.new
+    syncer.on(Caridina::Events::Message, ->listener(Caridina::Events::Event))
+  end
+
   it "sends events to listeners without source" do
     received_event = nil
     calls = 0

src/events/base.cr

@@ -61,6 +61,6 @@ module Caridina::Events
     class Content < Event::Content
     end
 
-    getter content : Nil = nil
+    getter content : Content? = nil
   end
 end

src/events/state_events.cr

@@ -116,7 +116,7 @@ module Caridina::Events
     # set it up ourself.
     property room_id : String?
 
-    def content #: Event::Content
+    def content : Event::Content
       json = @json_unmapped["content"].to_json
 
       {% begin %}

src/syncer.cr

@@ -49,12 +49,18 @@ class Caridina::Syncer
     end
   end
 
-  def on(event_type : Events::Event.class, source = Source::All, &block : EventListener) : Nil
-    if !@listeners.has_key?(event_type)
-      @listeners[event_type] = Array(Tuple(EventListener, Source)).new
-    end
+  def on(event_type : Events::Event.class, source = Source::All, &listener : EventListener) : Nil
+    on(event_type, source, listener)
+  end
 
-    @listeners[event_type] << {block, source}
+  def on(event_type : Events::Event.class, source = Source::All, listener : EventListener? = nil) : Nil
+    if !listener.nil?
+      if !@listeners.has_key?(event_type)
+        @listeners[event_type] = Array(Tuple(EventListener, Source)).new
+      end
+
+      @listeners[event_type] << {listener, source}
+    end
   end
 
   private def dispatch(event, event_source) : Nil