Class: RuboCop::Cop::Lint::EmptyConditionalBody

Inherits:
Base
  • Object
show all
Extended by:
AutoCorrector
Includes:
CommentsHelp, RangeHelp
Defined in:
lib/rubocop/cop/lint/empty_conditional_body.rb

Overview

Checks for the presence of ‘if`, `elsif` and `unless` branches without a body.

NOTE: empty ‘else` branches are handled by `Style/EmptyElse`.

Examples:

# bad
if condition
end

# bad
unless condition
end

# bad
if condition
  do_something
elsif other_condition
end

# good
if condition
  do_something
end

# good
unless condition
  do_something
end

# good
if condition
  do_something
elsif other_condition
  do_something_else
end

AllowComments: true (default)

# good
if condition
  do_something
elsif other_condition
  # noop
end

AllowComments: false

# bad
if condition
  do_something
elsif other_condition
  # noop
end

Constant Summary collapse

MSG = 
'Avoid `%<keyword>s` branches without a body.'

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 included from CommentsHelp

#comments_contain_disables?, #comments_in_range, #contains_comments?, #source_range_with_comment

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_new_investigation, #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_if(node) ⇒ Object

rubocop:disable Metrics/AbcSize



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# File 'lib/rubocop/cop/lint/empty_conditional_body.rb', line 71

def on_if(node)
  return if node.body || same_line?(node.loc.begin, node.loc.end)
  return if cop_config['AllowComments'] && contains_comments?(node)

  range = offense_range(node)

  add_offense(range, message: format(MSG, keyword: node.keyword)) do |corrector|
    next if node.parent&.call_type?

    autocorrect(corrector, node)
  end
end