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Contents
# = Prototype
#
# Prototype-base Object-Oriented programming.
#
# == Copying
#
# Copyright (c) 2006, 2007 Thomas Sawyer
# = Prototype
#
class Prototype
# New prototype object.
def initialize(&block)
@traits = []
instance_eval(&block)
h = {}
iv = instance_variables
iv.each { |k| h[k[1..-1].to_sym] = instance_eval{ instance_variable_get(k) } }
meta.class_eval do
h.each do |k,v|
case v
when Proc
#define_method(k){ |*args| v[*args] }
attr_reader k
else
attr_accessor k
end
end
end
end
def fn(&blk)
proc(&blk)
end
def new(o=nil)
return o.clone if o
return clone
end
def meta
(class << self; self; end)
end
def traits
@traits
end
def trait(obj)
traits << obj.new
end
def method_missing(s, *a, &b)
if trait = traits.find{ |t| t.method_defined?(s) }
trait.send(s,*a,&b)
else
super
end
end
end
module Kernel
def prototype(&block)
Prototype.new(&block)
end
#private
# Synonymous with #clone, this is an interesting
# method in that it promotes prototype-based Ruby.
# Now Classes aren't the only things that respond to #new.
#
# "ABC".new => "ABC"
#
def new(o=nil)
return o.clone if o
return clone
end
end
Version data entries
10 entries across 10 versions & 2 rubygems