Class: Pack::Window

Inherits:
Object
  • Object
show all
Defined in:
lib/pack/window.rb

Defined Under Namespace

Classes: Unpacked

Instance Method Summary collapse

Constructor Details

#initialize(size) ⇒ Window

Returns a new instance of Window.



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# File 'lib/pack/window.rb', line 13

def initialize(size)
  @objects = Array.new(size)
  @offset  = 0
end

Instance Method Details

#add(entry, data) ⇒ Object 



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# File 'lib/pack/window.rb', line 18

def add(entry, data)
  unpacked = Unpacked.new(entry, data)
  @objects[@offset] = unpacked
  @offset = wrap(@offset + 1)

  unpacked
end

#each ⇒ Object 



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# File 'lib/pack/window.rb', line 26

def each
  cursor = wrap(@offset - 2)
  limit  = wrap(@offset - 1)

  loop do
    break if cursor == limit

    unpacked = @objects[cursor]
    yield unpacked if unpacked

    cursor = wrap(cursor - 1)
  end
end