Class: RR::Injections::MethodMissingInjection
- Includes:
- ClassInstanceMethodDefined
- Defined in:
- lib/rr/injections/method_missing_injection.rb
Constant Summary collapse
- BoundObjects =
{}
Instance Attribute Summary collapse
-
#subject_class ⇒ Object
readonly
Returns the value of attribute subject_class.
Instance Method Summary collapse
- #bind ⇒ Object
-
#initialize(subject_class) ⇒ MethodMissingInjection
constructor
A new instance of MethodMissingInjection.
- #reset ⇒ Object
Methods included from ClassInstanceMethodDefined
#class_instance_method_defined
Methods inherited from Injection
#original_method, #subject_has_method_defined?, #subject_has_original_method?
Methods included from Space::Reader
Constructor Details
#initialize(subject_class) ⇒ MethodMissingInjection
Returns a new instance of MethodMissingInjection.
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# File 'lib/rr/injections/method_missing_injection.rb', line 22 def initialize(subject_class) @subject_class = subject_class @placeholder_method_defined = false end |
Instance Attribute Details
#subject_class ⇒ Object (readonly)
Returns the value of attribute subject_class.
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# File 'lib/rr/injections/method_missing_injection.rb', line 20 def subject_class @subject_class end |
Instance Method Details
#bind ⇒ Object
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# File 'lib/rr/injections/method_missing_injection.rb', line 27 def bind unless class_instance_method_defined(subject_class, original_method_alias_name) unless class_instance_method_defined(subject_class, :method_missing) @placeholder_method_defined = true subject_class.class_eval do def method_missing(method_name, *args, &block) super end end end # Ruby 1.9 will raise a NoMethodError when #method_missing is defined # on the subject, but #to_ary isn't. #method_missing will always be # defined thanks to BasicObject, but #to_ary may not, so in this case # we need to supply our own. Furthermore, Ruby has special logic to # handle the return value of #to_ary; if it is nil, then it tells Ruby # to ignore #to_ary altogether and use a default rule to arrayify the # object in question. unless class_instance_method_defined(subject_class, :to_ary) subject_class.class_eval do def to_ary; nil; end end end subject_class.__send__(:alias_method, original_method_alias_name, :method_missing) bind_method end self end |
#reset ⇒ Object
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# File 'lib/rr/injections/method_missing_injection.rb', line 55 def reset if subject_has_method_defined?(original_method_alias_name) memoized_original_method_alias_name = original_method_alias_name placeholder_method_defined = @placeholder_method_defined subject_class.class_eval do remove_method :method_missing unless placeholder_method_defined alias_method :method_missing, memoized_original_method_alias_name end remove_method memoized_original_method_alias_name end end end |