Class: Pelusa::Iterator

Inherits:

Object

• Object
• Pelusa::Iterator

Defined in:

lib/pelusa/iterator.rb

Constant Summary

NodeIterator =

lambda do |node, check|
  check.call(node)

  if node.respond_to?(:each)
    return node.each { |node| NodeIterator.call(node, check) }
  end

  ivars    = node.instance_variables
  children = ivars.map { |ivar| node.instance_variable_get(ivar) }

  return children.each { |node| NodeIterator.call(node, check) }
end

Instance Method Summary

• #call(node) ⇒ Object

  Public: Calls the iterator with the given arguments.

• #initialize(&lint) ⇒ Iterator constructor

  Public: Initializes a new Iterator with a particular lint check.

• #to_proc ⇒ Object

  Public: Returns the iterator.

Constructor Details

#initialize(&lint) ⇒ Iterator

Public: Initializes a new Iterator with a particular lint check.

lint - The lint block that yields a node to assert for particular conditions in that node.

# File 'lib/pelusa/iterator.rb', line 20

def initialize(&lint)
  @iterator = lambda { |node| NodeIterator.call(node, lint) }
end

Instance Method Details

#call(node) ⇒ Object

Public: Calls the iterator with the given arguments.

node - The root node from which to iterate.

# File 'lib/pelusa/iterator.rb', line 27

def call(node)
  @iterator.call(node)
end

#to_proc ⇒ Object

Public: Returns the iterator. Useful when using symbol to proc conversions, such as &iterator.

Returns the Proc iterator.

# File 'lib/pelusa/iterator.rb', line 35

def to_proc
  @iterator
end