Class: RuboCop::Cop::Style::ReturnNil
- Includes:
- ConfigurableEnforcedStyle
- Defined in:
- lib/rubocop/cop/style/return_nil.rb
Overview
This cop enforces consistency between ‘return nil’ and ‘return’.
Supported styles are: return, return_nil.
Constant Summary collapse
- RETURN_MSG =
'Use `return` instead of `return nil`.'
- RETURN_NIL_MSG =
'Use `return nil` instead of `return`.'
Constants included from Util
Instance Attribute Summary
Attributes inherited from Cop
#config, #corrections, #offenses, #processed_source
Instance Method Summary collapse
Methods included from ConfigurableEnforcedStyle
#alternative_style, #alternative_styles, #ambiguous_style_detected, #correct_style_detected, #detected_style, #detected_style=, #no_acceptable_style!, #no_acceptable_style?, #opposite_style_detected, #style, #style_detected, #style_parameter_name, #supported_styles, #unexpected_style_detected
Methods inherited from Cop
#add_offense, all, autocorrect_incompatible_with, 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?, #messages, non_rails, #parse, qualified_cop_name, #relevant_file?, #target_rails_version, #target_ruby_version
Methods included from AST::Sexp
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 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?, comment_line?, double_quotes_required?, escape_string, first_part_of_call_chain, interpret_string_escapes, line_range, needs_escaping?, on_node, parentheses?, same_line?, to_string_literal, to_supported_styles, tokens, trim_string_interporation_escape_character
Methods included from PathUtil
absolute?, chdir, hidden_dir?, hidden_file_in_not_hidden_dir?, match_path?, pwd, relative_path, reset_pwd, smart_path
Constructor Details
This class inherits a constructor from RuboCop::Cop::Cop
Instance Method Details
#autocorrect(node) ⇒ Object
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# File 'lib/rubocop/cop/style/return_nil.rb', line 60 def autocorrect(node) lambda do |corrector| corrected = style == :return ? 'return' : 'return nil' corrector.replace(node.source_range, corrected) end end |
#on_return(node) ⇒ Object
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# File 'lib/rubocop/cop/style/return_nil.rb', line 40 def on_return(node) # Check Lint/NonLocalExitFromIterator first before this cop node.each_ancestor(:block, :def, :defs) do |n| break if scoped_node?(n) send_node, args_node, _body_node = *n # if a proc is passed to `Module#define_method` or # `Object#define_singleton_method`, `return` will not cause a # non-local exit error break if define_method?(send_node) next if args_node.children.empty? return nil if chained_send?(send_node) end add_offense(node) unless correct_style?(node) end |