Class: RuboCop::Cop::Style::IfUnlessModifierOfIfUnless

Inherits:
Base
  • Object
show all
Extended by:
AutoCorrector
Includes:
RuboCop::Cop::StatementModifier
Defined in:
lib/rubocop/cop/style/if_unless_modifier_of_if_unless.rb

Overview

Checks for if and unless statements used as modifiers of other if or unless statements.

Examples:


# bad
tired? ? 'stop' : 'go faster' if running?

# bad
if tired?
  "please stop"
else
  "keep going"
end if running?

# good
if running?
  tired? ? 'stop' : 'go faster'
end

Constant Summary collapse

MSG =
'Avoid modifier `%<keyword>s` after another conditional.'

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 AutoCorrector

support_autocorrect?

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_new_investigation, #on_other_file, #parse, #ready, #relevant_file?, 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?, #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_if(node) ⇒ Object


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# File 'lib/rubocop/cop/style/if_unless_modifier_of_if_unless.rb', line 31

def on_if(node)
  return unless node.modifier_form? && node.body.if_type?

  add_offense(node.loc.keyword, message: format(MSG, keyword: node.keyword)) do |corrector|
    keyword = node.if? ? 'if' : 'unless'

    corrector.replace(node, <<~RUBY.chop)
      #{keyword} #{node.condition.source}
      #{node.if_branch.source}
      end
    RUBY
  end
end