Class: MiniRacer::Context::ExternalFunction

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

Instance Method Summary collapse

Constructor Details

#initialize(name, callback, parent) ⇒ ExternalFunction

Returns a new instance of ExternalFunction.



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

def initialize(name, callback, parent)
  unless String === name
    raise ArgumentError, "parent_object must be a String"
  end
  parent_object, _ , @name = name.rpartition(".")
  @callback = callback
  @parent = parent
  @parent_object_eval = nil
  @parent_object = nil

  unless parent_object.empty?
    @parent_object = parent_object

    @parent_object_eval = ""
    prev = ""
    first = true
    parent_object.split(".").each do |obj|
      prev << obj
      if first
        @parent_object_eval << "if (typeof #{prev} === 'undefined') { #{prev} = {} };\n"
      else
        @parent_object_eval << "#{prev} = #{prev} || {};\n"
      end
      prev << "."
      first = false
    end
    @parent_object_eval << "#{parent_object};"
  end
  notify_v8
end