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Contents
# frozen_string_literal: true
class Pry
class Method
# A Disowned Method is one that's been removed from the class on which it was defined.
#
# e.g.
# class C
# def foo
# C.send(:undefine_method, :foo)
# Pry::Method.from_binding(binding)
# end
# end
#
# In this case we assume that the "owner" is the singleton class of the receiver.
#
# This occurs mainly in Sinatra applications.
class Disowned < Method
attr_reader :receiver, :name
# Create a new Disowned method.
#
# @param [Object] receiver
# @param [String] method_name
def initialize(receiver, method_name)
@receiver = receiver
@name = method_name
@method = nil
end
# Is the method undefined? (aka `Disowned`)
# @return [Boolean] true
def undefined?
true
end
# Can we get the source for this method?
# @return [Boolean] false
def source?
false
end
# Get the hypothesized owner of the method.
#
# @return [Object]
def owner
class << receiver; self; end
end
# Raise a more useful error message instead of trying to forward to nil.
# rubocop:disable Style/MethodMissingSuper
def method_missing(method_name, *args, &block)
if method(:name).respond_to?(method_name)
raise "Cannot call '#{method_name}' on an undef'd method."
end
method = Object.instance_method(:method_missing).bind(self)
method.call(method_name, *args, &block)
end
# rubocop:enable Style/MethodMissingSuper
def respond_to_missing?(method_name, include_private = false)
!method(:name).respond_to?(method_name) || super
end
end
end
end
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