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Contents
require 'osheet/partial'
module Osheet
class PartialSet < ::Hash
# this class is a Hash that behaves kinda like a set. I want to
# push partials into the set using the '<<' operator, only allow
# Osheet::Partial objs to be pushed, and then be able to reference
# a particular partial using a key
def initialize
super
end
def <<(partial)
if (key = verify(partial))
push(key, partial)
end
end
# return the named partial
def get(name)
lookup(key(name.to_s))
end
private
def lookup(key)
self[key]
end
# push the partial onto the key
def push(key, partial)
self[key] = partial
end
# verify the partial, init and return the key
# otherwise ArgumentError it up
def verify(partial)
unless partial.kind_of?(Partial)
raise ArgumentError, 'you can only push Osheet::Partial objs to the partial set'
end
pkey = partial_key(partial)
self[pkey] ||= nil
pkey
end
def partial_key(partial)
key(partial.name)
end
def key(name)
name.to_s
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems