Class: Frill::List

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

Defined Under Namespace

Classes: CycleDetecter, Node

Instance Method Summary collapse

Constructor Details

#initialize ⇒ List

Returns a new instance of List.



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# File 'lib/frill/frill.rb', line 41

def initialize
  @nodes = {}
end

Instance Method Details

#[](label) ⇒ Object 



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# File 'lib/frill/frill.rb', line 58

def [](label)
  nodes[label]
end

#add(label) ⇒ Object 



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# File 'lib/frill/frill.rb', line 45

def add label
  nodes[label] ||= Node.new label
end

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/frill/frill.rb', line 62

def empty?
  nodes.empty?
end

#include?(label) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/frill/frill.rb', line 66

def include? label
  nodes[label]
end

#index(label) ⇒ Object 



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# File 'lib/frill/frill.rb', line 70

def index label
  to_a.index label
end

#move_before(label1, label2) ⇒ Object 



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# File 'lib/frill/frill.rb', line 49

def move_before label1, label2
  node1 = add label1
  node2 = add label2

  node1.move_before node2

  CycleDetecter.detect! nodes
end

#to_a ⇒ Object 



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# File 'lib/frill/frill.rb', line 74

def to_a
  array = []

  nodes.values.each do |node|
    array += construct_array(node) unless array.include? node.label
  end

  array
end