class Chef::Decorator
Public Class Methods
Source
# File lib/chef/decorator.rb, line 23 def initialize(obj = NOT_PASSED) @__defined_methods__ = [] super unless obj.equal?(NOT_PASSED) end
Calls superclass method
Public Instance Methods
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# File lib/chef/decorator.rb, line 45 def __setobj__(obj) __reset_methods__ super end
reset our methods on the instance if the object changes under us (this also clears out the closure over the target we create in method_missing
below)
Calls superclass method
Source
# File lib/chef/decorator.rb, line 34 def is_a?(klass) __getobj__.is_a?(klass) || super end
if we wrap a Hash then decorator.is_a?(Hash) should be true
Calls superclass method
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# File lib/chef/decorator.rb, line 39 def kind_of?(klass) __getobj__.is_a?(klass) || super end
if we wrap a Hash then decorator.kind_of?(Hash) should be true
Calls superclass method
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# File lib/chef/decorator.rb, line 52 def method_missing(m, *args, &block) r = true target = __getobj__ { r = false } if r && target.respond_to?(m) # these next 4 lines are the patched code define_singleton_method(m) do |*args, &block| target.__send__(m, *args, &block) end @__defined_methods__.push(m) target.__send__(m, *args, &block) elsif ::Kernel.respond_to?(m, true) ::Kernel.instance_method(m).bind(self).call(*args, &block) else super(m, *args, &block) end end
this is the ruby 2.2/2.3 implementation of Delegator#method_missing() with adding the define_singleton_method call and @defined_methods tracking
Calls superclass method
Source
# File lib/chef/decorator.rb, line 29 def nil? __getobj__.nil? end
if we wrap a nil then decorator.nil? should be true
Private Instance Methods
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# File lib/chef/decorator.rb, line 73 def __reset_methods__ @__defined_methods__.each do |m| singleton_class.send(:undef_method, m) end @__defined_methods__ = [] end
used by __setobj__ to clear the methods we’ve built on the instance.