OpenCascade

OpenCascade is subclass of OpenObject. It differs in a few significant ways.

The main reason this class is labeled "cascade", every internal Hash is transformed into an OpenCascade dynamically upon access. This makes it easy to create "cascading" references. 

  h = { :x => { :y => { :z => 1 } } }
  c = OpenCascade[h]
  c.x.y.z  #=> 1

As soon as you access a node it automatically becomes an OpenCascade. 

  c = OpenCascade.new   #=> #<OpenCascade:0x7fac3680ccf0 {}>
  c.r                   #=> #<OpenCascade:0x7fac368084c0 {}>
  c.a.b                 #=> #<OpenCascade:0x7fac3680a4f0 {}>

But if you set a node, then that will be it‘s value. 

  c.a.b = 4             #=> 4

To query a node without causing the auto-creation of an OpenCasade object, use the ?-mark. 

  c.a.z?                #=> nil

Finally, you can set a node and get the reciever back using the !-mark. 

  c = OpenCascade.new   #=> #<OpenCascade:0x7fac3680ccf0 {}>
  c.x!(4).y!(3)         #=> #<OpenCascade:0x7fac3680ccf0 {:x=>4, :y=>3}>
Methods
method_missing
Public Instance methods
method_missing( sym, arg=nil )

[ + ]

# File lib/more/facets/opencascade.rb, line 70
  def method_missing( sym, arg=nil )
    type = sym.to_s[-1,1]
    name = sym.to_s.gsub(/[=!?]$/, '').to_sym
    if type == '='
      self[name] = arg
    elsif type == '!'
      self[name] = arg
      self
    elsif type == '?'
      self[name]
    else
      if val = self[name]
        if Hash === val
          self[name] = self.class.new(val)
        else
          self[name]
        end
      else
        self[name] = self.class.new
      end
    end
  end