Class: RuboCop::Cop::Lint::UselessElseWithoutRescue

Inherits:
Base
  • Object
show all
Defined in:
lib/rubocop/cop/lint/useless_else_without_rescue.rb

Overview

This cop checks for useless `else` in `begin..end` without `rescue`.

NOTE: This syntax is no longer valid on Ruby 2.6 or higher and this cop is going to be removed at some point the future.

Examples:


# bad

begin
  do_something
else
  do_something_else # This will never be run.
end

# good

begin
  do_something
rescue
  handle_errors
else
  do_something_else
end

Constant Summary collapse

MSG =
'`else` without `rescue` is useless.'

Constants inherited from Base

Base::RESTRICT_ON_SEND

Instance Attribute Summary

Attributes inherited from Base

#config, #processed_source

Instance Method Summary collapse

Methods inherited from Base

#add_global_offense, #add_offense, autocorrect_incompatible_with, badge, #callbacks_needed, callbacks_needed, #config_to_allow_offenses, #config_to_allow_offenses=, #cop_config, #cop_name, cop_name, department, documentation_url, exclude_from_registry, #excluded_file?, #external_dependency_checksum, inherited, #initialize, joining_forces, lint?, match?, #message, #offenses, #on_investigation_end, #on_other_file, #ready, #relevant_file?, support_autocorrect?, support_multiple_source?, #target_rails_version, #target_ruby_version

Methods included from AutocorrectLogic

#autocorrect?, #autocorrect_enabled?, #autocorrect_requested?, #correctable?, #disable_uncorrectable?, #safe_autocorrect?

Methods included from IgnoredNode

#ignore_node, #ignored_node?, #part_of_ignored_node?

Methods included from Util

silence_warnings

Constructor Details

This class inherits a constructor from RuboCop::Cop::Base

Instance Method Details

#on_new_investigationObject


35
36
37
38
39
40
41
# File 'lib/rubocop/cop/lint/useless_else_without_rescue.rb', line 35

def on_new_investigation
  processed_source.diagnostics.each do |diagnostic|
    next unless diagnostic.reason == :useless_else

    add_offense(diagnostic.location, severity: diagnostic.level)
  end
end