Class: Musa::GenerativeGrammar::Implementation::RepeatNode Private

Inherits:
Node
  • Object
show all
Defined in:
lib/musa-dsl/generative/generative-grammar.rb

Overview

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

Node representing repetition of a node.

Generates options with different repetition counts. Created by Node#repeat.

Instance Method Summary collapse

Constructor Details

#initialize(node, max = nil) ⇒ RepeatNode

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns a new instance of RepeatNode.

Parameters:

  • node (Node) —

    node to repeat

  • max (Integer, nil) (defaults to: nil) —

    maximum repetitions (nil = infinite)



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# File 'lib/musa-dsl/generative/generative-grammar.rb', line 613

def initialize(node, max = nil)
  @node = node
  @max = max

  super()
end

Instance Method Details

#_options(parent: nil, depth: nil, &condition) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/musa-dsl/generative/generative-grammar.rb', line 621

def _options(parent: nil, depth: nil, &condition)
  parent ||= []
  depth ||= 0

  r = []

  if @max.nil? || depth < @max
    node_options = @node._options(parent: parent, &condition)

    node_options.each do |node_option|
      r << node_option

      node_suboptions = _options(parent: parent + node_option, depth: depth + 1, &condition)

      node_suboptions.each do |node_suboption|
        r << node_option + node_suboption
      end
    end
  end

  r
end