Class: Rubocop::Cop::Style::RescueModifier

Inherits:
Cop
  • Object
show all
Includes:
CheckMethods
Defined in:
lib/rubocop/cop/style/rescue_modifier.rb

Overview

This cop checks for uses of rescue in its modifier form.

Constant Summary collapse

MSG = 
'Avoid using rescue in its modifier form.'

Constants inherited from Cop

Cop::OPERATOR_METHODS

Constants included from Util

Util::PROC_NEW_NODE

Instance Attribute Summary

Attributes inherited from Cop

#config, #corrections, #offences, #processed_source

Instance Method Summary collapse

Methods included from CheckMethods

#on_def, #on_defs

Methods inherited from Cop

#add_offence, all, #autocorrect?, #config_to_allow_offences, #config_to_allow_offences=, #cop_config, cop_name, #cop_name, cop_type, #debug?, #exclude_file?, #exclude_paths, #ignore_node, #include_file?, #include_paths, inherited, #initialize, lint?, #message, non_rails, rails?, #relevant_file?, style?, #support_autocorrect?

Methods included from Util

block_length, command?, comment_line?, const_name, first_part_of_call_chain, lambda?, lambda_or_proc?, line_range, on_node, proc?, range_with_surrounding_space, source_range, strip_quotes

Constructor Details

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

Instance Method Details

#check(_node, _method_name, _args, body) ⇒ Object 



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# File 'lib/rubocop/cop/style/rescue_modifier.rb', line 23

def check(_node, _method_name, _args, body)
  return unless body

  case body.type
  when :rescue
    ignore_node(body)
  when :ensure
    first_child = body.children.first
    if first_child && first_child.type == :rescue
      ignore_node(first_child)
    end
  end
end

#on_kwbegin(node) ⇒ Object 



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# File 'lib/rubocop/cop/style/rescue_modifier.rb', line 18

def on_kwbegin(node)
  body, *_ = *node
  check(nil, nil, nil, body)
end

#on_rescue(node) ⇒ Object 



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# File 'lib/rubocop/cop/style/rescue_modifier.rb', line 12

def on_rescue(node)
  return if ignored_node?(node)

  add_offence(node, :expression)
end