Sha256: 202af902671d769626605a34c4b693b1c8d36115cbd97dd602a916672568fcd7
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Versions: 6
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Contents
#
# ActiveFacts Runtime API
# RoleProxy class, still somewhat experimental
#
# Copyright (c) 2009 Clifford Heath. Read the LICENSE file.
#
require 'delegate'
module ActiveFacts
module API
#
# When you use the accessor method created by has_one, one_to_one, or maybe, you get a RoleProxy for the actual value.
# This behaves almost exactly as the value, but it knows through which role you fetched it.
# That will allow it to verbalise itself using the correct reading for that role.
#
# Don't use "SomeClass === role_value" to test the type, use "role_value.is_a?(SomeClass)" instead.
#
# In future, retrieving a value by indexing into a RoleValues array will do the same thing.
#
class RoleProxy < SimpleDelegator
def initialize(role, o = nil) #:nodoc:
@role = role # REVISIT: Use this to implement verbalise()
__setobj__(o)
end
def method_missing(m, *a, &b) #:nodoc:
begin
super # Delegate first
rescue NoMethodError => e
__getobj__.method_missing(m, *a, &b)
rescue => e
raise
end
end
def class #:nodoc:
__getobj__.class
end
def is_a? klass #:nodoc:
__getobj__.is_a? klass
end
def to_s #:nodoc:
__getobj__.to_s
end
def object_id #:nodoc:
__getobj__.object_id
end
# REVISIT: Should Proxies hash and eql? the same as their wards?
def hash #:nodoc:
__getobj__.hash ^ self.class.hash
end
def eql?(o) #:nodoc:
self.class == o.class and __getobj__.eql?(o)
end
def ==(o) #:nodoc:
__getobj__.==(o)
end
def inspect #:nodoc:
"Proxy:#{__getobj__.inspect}"
end
end
end
end
Version data entries
6 entries across 6 versions & 1 rubygems