Class: RuboCop::Cop::Style::IfUnlessModifier

Inherits:
Cop
  • Object
show all
Includes:
RuboCop::Cop::StatementModifier
Defined in:
lib/rubocop/cop/style/if_unless_modifier.rb

Overview

Checks for if and unless statements that would fit on one line if written as a modifier if/unless. The maximum line length is configurable.

Constant Summary collapse

MSG =
'Favor modifier `%s` usage when having a single-line body. ' \
'Another good alternative is the usage of control flow ' \
'`&&`/`||`.'.freeze
ASSIGNMENT_TYPES =
%i[lvasgn casgn cvasgn
gvasgn ivasgn masgn].freeze

Constants included from Util

Util::ASGN_NODES, Util::BYTE_ORDER_MARK, Util::CONDITIONAL_NODES, Util::EQUALS_ASGN_NODES, Util::LITERAL_REGEX, Util::LOGICAL_OPERATOR_NODES, Util::MODIFIER_NODES, Util::OPERATOR_METHODS, Util::SHORTHAND_ASGN_NODES

Instance Attribute Summary

Attributes inherited from Cop

#config, #corrections, #offenses, #processed_source

Instance Method Summary collapse

Methods included from RuboCop::Cop::StatementModifier

#body_length, #comment_lines, #commented?, #empty_body?, #length_in_modifier_form, #line_count, #max_line_length, #modifier_fits_on_single_line?, #non_eligible_body?, #non_eligible_condition?, #non_eligible_node?, #single_line_as_modifier?

Methods inherited from Cop

#add_offense, all, badge, #config_to_allow_offenses, #config_to_allow_offenses=, #cop_config, cop_name, #cop_name, #correct, department, #duplicate_location?, #excluded_file?, #find_location, #highlights, inherited, #initialize, #join_force?, lint?, match?, #message, #messages, non_rails, #parse, qualified_cop_name, #relevant_file?, #target_rails_version, #target_ruby_version

Methods included from NodePattern::Macros

#def_node_matcher, #def_node_search, #node_search, #node_search_all, #node_search_body, #node_search_first

Methods included from AST::Sexp

#s

Methods included from AutocorrectLogic

#autocorrect?, #autocorrect_enabled?, #autocorrect_requested?, #support_autocorrect?

Methods included from IgnoredNode

#ignore_node, #ignored_node?, #part_of_ignored_node?

Methods included from Util

begins_its_line?, block_length, comment_line?, compatible_external_encoding_for?, directions, double_quotes_required?, effective_column, ends_its_line?, escape_string, first_part_of_call_chain, interpret_string_escapes, line_distance, line_range, move_pos, needs_escaping?, on_node, operator?, parentheses?, parenthesized_call?, preceed?, range_between, range_by_whole_lines, range_with_surrounding_comma, range_with_surrounding_space, same_line?, source_range, strip_quotes, stripped_source_upto, symbol_without_quote?, to_string_literal, to_supported_styles, to_symbol_literal, within_node?

Methods included from PathUtil

absolute?, match_path?, relative_path, smart_path

Constructor Details

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

Instance Method Details

#on_if(node) ⇒ Object



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# File 'lib/rubocop/cop/style/if_unless_modifier.rb', line 19

def on_if(node)
  return unless eligible_node?(node)

  add_offense(node, :keyword, format(MSG, node.keyword))
end