Module: DeepCover::Node::Mixin::HasChild::ClassMethods

Defined in:
lib/deep_cover/node/mixin/has_child.rb

Instance Method Summary collapse

Instance Method Details

#check_children_types(nodes) ⇒ Object 



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# File 'lib/deep_cover/node/mixin/has_child.rb', line 54

def check_children_types(nodes)
  types = expected_types(nodes)
  nodes_mismatches(nodes, types)
end

#child_index_to_name(index, nb_children) ⇒ Object

Raises:

  • (IndexError) 


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# File 'lib/deep_cover/node/mixin/has_child.rb', line 46

def child_index_to_name(index, nb_children)
  self::CHILDREN.each do |name, i|
    return name if i == index || (i == index - nb_children) ||
                   (i.is_a?(Range) && i.begin <= index && i.end + nb_children >= index)
  end
  raise IndexError, "index #{index} does not correspond to any child of #{self}"
end

#has_child(rest_: false, refine_: false, **h) ⇒ Object

Raises:

  • (TypeError) 


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# File 'lib/deep_cover/node/mixin/has_child.rb', line 25

def has_child(rest_: false, refine_: false, **h)
  raise "Needs exactly one custom named argument, got #{h.size}" if h.size != 1
  name, types = h.first
  raise TypeError, "Expect a Symbol for name, got a #{name.class} (#{name.inspect})" unless name.is_a?(Symbol)
  update_children_const(name, rest: rest_) unless refine_
  define_accessor(name) unless refine_
  add_runtime_check(name, types)
  self
end

#has_extra_children(**h) ⇒ Object 



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# File 'lib/deep_cover/node/mixin/has_child.rb', line 35

def has_extra_children(**h)
  has_child(**h, rest_: true)
end

#min_children ⇒ Object 



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# File 'lib/deep_cover/node/mixin/has_child.rb', line 59

def min_children
  self::CHILDREN.values.grep(Integer).size
end

#refine_child(child_name = nil, **h) ⇒ Object 



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# File 'lib/deep_cover/node/mixin/has_child.rb', line 39

def refine_child(child_name = nil, **h)
  if child_name
    h = {child_name => self::CHILDREN_TYPES.fetch(child_name), **h}
  end
  has_child(**h, refine_: true)
end