Class: Rulezilla::Tree

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(node) ⇒ Tree 



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# File 'lib/rulezilla/tree.rb', line 7

def initialize(node)
  @root_node      = node
  @root_node.name = :root
  @current_node   = node
end

Instance Attribute Details

#current_node ⇒ Object (readonly)

Returns the value of attribute current_node.



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# File 'lib/rulezilla/tree.rb', line 5

def current_node
  @current_node
end

#root_node ⇒ Object (readonly)

Returns the value of attribute root_node.



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# File 'lib/rulezilla/tree.rb', line 5

def root_node
  @root_node
end

Instance Method Details

#all_results(record, node = @root_node, results = []) ⇒ Object 



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# File 'lib/rulezilla/tree.rb', line 42

def all_results(record, node = @root_node, results = [])
  if node.has_result?
    begin
      results << node.result(record)
    rescue StandardError
      NoMethodError
    end
  end

  node.children.each do |child_node|
    all_results(record, child_node, results)
  end

  results
end

#clone_and_append_children(children, node = @current_node) ⇒ Object 



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# File 'lib/rulezilla/tree.rb', line 66

def clone_and_append_children(children, node = @current_node)
  children.each do |child_node|
    child_node = child_node.dup
    node.add_child(child_node)

    next unless child_node.has_children?

    children_nodes = child_node.children
    child_node.children = []
    clone_and_append_children(children_nodes, child_node)
  end
end

#create_and_move_to_child(name = nil) ⇒ Object 



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# File 'lib/rulezilla/tree.rb', line 58

def create_and_move_to_child(name = nil)
  node = Node.new
  node.name = name
  @current_node.add_child(node)
  @current_node = node
  node
end

#find_all(record, node = @root_node) ⇒ Object

Returns all the result outcomes of all the matching nodes.



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# File 'lib/rulezilla/tree.rb', line 19

def find_all(record, node = @root_node)
  array = []
  if node.applies?(record)
    node.children.each do |child_node|
      array += find_all(record, child_node)
    end

    return node.has_result? ? array + [node] : array
  end
  array
end

#go_up ⇒ Object 



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# File 'lib/rulezilla/tree.rb', line 13

def go_up
  @current_node = is_root? ? @root_node : @current_node.parent
end

#trace(record, node = @root_node) ⇒ Object 



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# File 'lib/rulezilla/tree.rb', line 31

def trace(record, node = @root_node)
  if node.applies?(record)
    node.children.each do |child_node|
      array = trace(record, child_node)
      return [node] + array unless array.empty?
    end
    return node.has_result? ? [node] : []
  end
  []
end