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

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

Overview

Checks for useless ‘else` in `begin..end` without `rescue`.

NOTE: This syntax is no longer valid on Ruby 2.6 or higher.

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 included from TargetRubyVersion

maximum_target_ruby_version, minimum_target_ruby_version, required_maximum_ruby_version, required_minimum_ruby_version, support_target_ruby_version?

Methods inherited from Base

#active_support_extensions_enabled?, #add_global_offense, #add_offense, #always_autocorrect?, autocorrect_incompatible_with, badge, #begin_investigation, callbacks_needed, #callbacks_needed, #config_to_allow_offenses, #config_to_allow_offenses=, #contextual_autocorrect?, #cop_config, cop_name, #cop_name, department, documentation_url, exclude_from_registry, #excluded_file?, #external_dependency_checksum, inherited, #initialize, #inspect, joining_forces, lint?, match?, #message, #offenses, #on_investigation_end, #on_other_file, #parse, #parser_engine, #ready, #relevant_file?, requires_gem, #string_literals_frozen_by_default?, support_autocorrect?, support_multiple_source?, #target_rails_version, #target_ruby_version

Methods included from ExcludeLimit

#exclude_limit

Methods included from AutocorrectLogic

#autocorrect?, #autocorrect_enabled?, #autocorrect_requested?, #autocorrect_with_disable_uncorrectable?, #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_investigation ⇒ Object 



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# File 'lib/rubocop/cop/lint/useless_else_without_rescue.rb', line 34

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