Class: BatCave::DSL::IvarBinding

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

Overview

Metaprogramming to provide instance variables from a class as local-variable-like things in a binding. For use with ERB and such.

This is a fun hack.

Instance Method Summary collapse

Constructor Details

#initialize(object) ⇒ IvarBinding

Returns a new instance of IvarBinding.



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# File 'lib/batcave/dsl.rb', line 224

def initialize(object)
  # Make a new Object subclass
  klass = Class.new(Object)

  # Find all instance variables in 'object' and make
  # them methods in our new class. Each method will
  # simply return that named instance variable.
  object.instance_variables.each do |ivar|
    meth = ivar.to_s.gsub("@", "")
    klass.instance_eval do
      define_method(meth) do
        object.instance_variable_get(ivar)
      end
    end
  end

  # Make a method that returns the binding for this class
  klass.instance_eval do
    define_method(:_binding) do
      return binding
    end
  end
  @instance = klass.new
end

Instance Method Details

#binding ⇒ Object

def initialize



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# File 'lib/batcave/dsl.rb', line 249

def binding
  return @instance._binding
end