Class: RuboCop::Cop::Lint::RegexpAsCondition

Inherits:

Base

• Object
• Base
• RuboCop::Cop::Lint::RegexpAsCondition

Extended by:

AutoCorrector

Defined in:

lib/rubocop/cop/lint/regexp_as_condition.rb

Overview

Checks for regexp literals used as ‘match-current-line`. If a regexp literal is in condition, the regexp matches `$_` implicitly.

Examples:

# bad
if /foo/
  do_something
end

# good
if /foo/ =~ $_
  do_something
end

Constant Summary

MSG =

'Do not use regexp literal as a condition. ' \
'The regexp literal matches `$_` implicitly.'

Constants inherited from Base

Base::RESTRICT_ON_SEND

Instance Attribute Summary

Attributes inherited from Base

#config, #processed_source

Instance Method Summary

• #on_match_current_line(node) ⇒ Object

Methods included from AutoCorrector

support_autocorrect?

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_match_current_line(node) ⇒ Object

# File 'lib/rubocop/cop/lint/regexp_as_condition.rb', line 25

def on_match_current_line(node)
  return if node.ancestors.none?(&:conditional?)
  return if part_of_ignored_node?(node)

  add_offense(node) { |corrector| corrector.replace(node, "#{node.source} =~ $_") }

  ignore_node(node)
end