README for abstract_class
=========================

See the file MIT-LICENSE for licensing and warranty information.  
The latest version of this software is available at the following URL:
http://svn.dagi3d.net/rails/abstract_class/trunk

Description
===========
The abstract_class gem allows to create abstract classes and define abstract 
methods as well.

(It's just a proof of concept)


Usage
=====
* Mark a class as abstract by calling the abstract_class method:

#code
class Foo
	abstract_class
end
#code

* Define an abstract method by calling the abstract_method method:
#code
class Foo
	abstract_class
	abstract_method :foo
end
#code

Now the abstract class can't be instantiated:

#code
foo = Foo.new #raises a Exception
#code


* Define an inherit class: 

#code
class Bar < Foo
	def foo
	end
end

bar = Bar.new
#code

Because the Foo class is an abstract class, some points should be taken in account:
- The abstract methods can't be implemented in the abstract class
- In order to declare abstract methods, the class should be marked as abstract first
- The inherited abstract methods have to be implemented

About the author
================
Borja Martín <borjam@dagi3d.net>