base/immutable_queue.rb in maroon-0.6.5 vs base/immutable_queue.rb in maroon-0.7.0

@@ -1,16 +1,17 @@
 context :ImmutableQueue do
   role :front do
   end
   role :back do
   end
-  push do |element|
+
+  def push(element)
     b = back || ImmutableStack::empty
     ImmutableQueue.new(front, b.push(element))
   end
 
-  pop do
+  def pop
     f, b = front, back
     if f == ImmutableStack::empty
       #reverse the back stack to be able to pop from the front in correct order
       until b == ImmutableStack::empty
         e, b = b.pop
@@ -23,15 +24,15 @@
     else
       [head, ImmutableQueue.new(f, b)]
     end
   end
 
-  empty true do
+  def self.empty
     @@empty ||= ImmutableQueue.new(ImmutableStack::empty, ImmutableStack::empty)
   end
 
-  push_array do |arr|
+  def push_array(arr)
     q = self
     if arr
       arr.each do |i|
         q = q.push i
       end
@@ -39,10 +40,10 @@
     q
   end
 
   private
 
-  initialize do |front, back|
+  def initialize(front, back)
     @front = front || ImmutableStack::empty
     @back = back || ImmutableStack::empty
     self.freeze
   end
 
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