Class: RuboCop::Cop::Lint::Void
Overview
This cop checks for operators, variables, literals, and nonmutating methods used in void context.
Constant Summary collapse
- OP_MSG =
'Operator `%<op>s` used in void context.'
- VAR_MSG =
'Variable `%<var>s` used in void context.'
- LIT_MSG =
'Literal `%<lit>s` used in void context.'
- SELF_MSG =
'`self` used in void context.'
- DEFINED_MSG =
'`%<defined>s` used in void context.'
- NONMUTATING_MSG =
'Method `#%<method>s` used in void context. ' \ 'Did you mean `#%<method>s!`?'
- BINARY_OPERATORS =
%i[* / % + - == === != < > <= >= <=>].freeze
- UNARY_OPERATORS =
%i[+@ -@ ~ !].freeze
- OPERATORS =
(BINARY_OPERATORS + UNARY_OPERATORS).freeze
- VOID_CONTEXT_TYPES =
%i[def for block].freeze
- NONMUTATING_METHODS =
%i[capitalize chomp chop collect compact delete_prefix delete_suffix downcase encode flatten gsub lstrip map next reject reverse rotate rstrip scrub select shuffle slice sort sort_by squeeze strip sub succ swapcase tr tr_s transform_values unicode_normalize uniq upcase].freeze
Constants included from Util
Instance Attribute Summary
Attributes inherited from Cop
#config, #corrections, #offenses, #processed_source
Instance Method Summary collapse
- #on_begin(node) ⇒ Object (also: #on_kwbegin)
- #on_block(node) ⇒ Object
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?, #message, #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
#on_begin(node) ⇒ Object Also known as: on_kwbegin
90 91 92 |
# File 'lib/rubocop/cop/lint/void.rb', line 90 def on_begin(node) check_begin(node) end |
#on_block(node) ⇒ Object
83 84 85 86 87 88 |
# File 'lib/rubocop/cop/lint/void.rb', line 83 def on_block(node) return unless node.body && !node.body.begin_type? return unless in_void_context?(node.body) check_expression(node.body) end |