Module: ActiveSupport::Rescuable
- Defined in:
- lib/jactive_support/rescuable.rb
Defined Under Namespace
Modules: ClassMethods
Instance Method Summary collapse
Instance Method Details
#handler_for_rescue(exception) ⇒ Object
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# File 'lib/jactive_support/rescuable.rb', line 32 def handler_for_rescue(exception) # We go from right to left because pairs are pushed onto rescue_handlers # as rescue_from declarations are found. _, rescuer = self.class.rescue_handlers.reverse.detect do |klass_name, handler| # The purpose of allowing strings in rescue_from is to support the # declaration of handler associations for exception classes whose # definition is yet unknown. # # Since this loop needs the constants it would be inconsistent to # assume they should exist at this point. An early raised exception # could trigger some other handler and the array could include # precisely a string whose corresponding constant has not yet been # seen. This is why we are tolerant to unknown constants. # # Note that this tolerance only matters if the exception was given as # a string, otherwise a NameError will be raised by the interpreter # itself when rescue_from CONSTANT is executed. klass = self.class.const_get(klass_name) rescue nil klass ||= klass_name.constantize rescue nil exception.is_a?(klass) || (exception.is_a?(NativeException) && exception.cause.is_a?(klass)) if klass end case rescuer when Symbol method(rescuer) when Proc rescuer.bind(self) end end |