Class: Rubocop::Cop::Lint::RescueException

Inherits:
Cop
  • Object
show all
Defined in:
lib/rubocop/cop/lint/rescue_exception.rb

Overview

This cop checks for rescue blocks targeting the Exception class.

Constant Summary collapse

MSG = 
'Avoid rescuing the Exception class.'

Instance Attribute Summary

Attributes inherited from Cop

#autocorrect, #corrections, #debug, #disabled_lines, #offences

Instance Method Summary collapse

Methods inherited from Cop

#add_offence, all, #autocorrect_action, cop_name, cop_type, #do_autocorrect, #ignore_node, inherited, #initialize, lint?, #name, rails?, style?

Constructor Details

This class inherits a constructor from Rubocop::Cop::Cop

Instance Method Details

#on_resbody(node) ⇒ Object 



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# File 'lib/rubocop/cop/lint/rescue_exception.rb', line 10

def on_resbody(node)
  return unless node.children.first
  rescue_args = node.children.first.children
  if rescue_args.any? { |a| targets_exception?(a) }
    add_offence(:warning, node.location.expression, MSG)
  end
end

#targets_exception?(rescue_arg_node) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rubocop/cop/lint/rescue_exception.rb', line 18

def targets_exception?(rescue_arg_node)
  return false unless rescue_arg_node.type == :const
  namespace, klass_name = *rescue_arg_node
  return false unless namespace.nil? || namespace.type == :cbase
  klass_name == :Exception
end