Class: RuboCop::Cop::Performance::StringReplacement
- Defined in:
- lib/rubocop/cop/performance/string_replacement.rb
Overview
This cop identifies places where ‘gsub` can be replaced by `tr` or `delete`.
Constant Summary collapse
- MSG =
'Use `%s` instead of `%s`.'.freeze
- DETERMINISTIC_REGEX =
/\A(?:#{LITERAL_REGEX})+\Z/
- REGEXP_CONSTRUCTOR_METHODS =
[:new, :compile].freeze
- GSUB_METHODS =
[:gsub, :gsub!].freeze
- DETERMINISTIC_TYPES =
[:regexp, :str, :send].freeze
- DELETE =
'delete'.freeze
- TR =
'tr'.freeze
- BANG =
'!'.freeze
- SINGLE_QUOTE =
"'".freeze
Constants included from Util
Util::ASGN_NODES, Util::BYTE_ORDER_MARK, Util::EQUALS_ASGN_NODES, Util::LITERAL_REGEX, Util::OPERATOR_METHODS, Util::SHORTHAND_ASGN_NODES, Util::STRING_ESCAPES, Util::STRING_ESCAPE_REGEX
Instance Attribute Summary
Attributes inherited from Cop
#config, #corrections, #offenses, #processed_source
Instance Method Summary collapse
Methods inherited from Cop
#add_offense, all, #config_to_allow_offenses, #config_to_allow_offenses=, #cop_config, #cop_name, cop_name, cop_type, #correct, #debug?, #details, #display_cop_names?, #display_style_guide?, #excluded_file?, #extra_details?, inherited, #initialize, #join_force?, lint?, match?, non_rails, #parse, qualified_cop_name, #reference_url, #relevant_file?, #style_guide_url, #target_ruby_version
Methods included from Sexp
Methods included from NodePattern::Macros
#def_node_matcher, #def_node_search, #node_search_body
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?, directions, double_quotes_acceptable?, double_quotes_required?, effective_column, ends_its_line?, first_part_of_call_chain, interpret_string_escapes, line_range, move_pos, numeric_range_size, on_node, operator?, parentheses?, parenthesized_call?, range_with_surrounding_comma, range_with_surrounding_space, source_range, strip_quotes, ternary_op?, to_string_literal, to_symbol_literal, within_node?
Methods included from PathUtil
absolute?, hidden?, issue_deprecation_warning, match_path?, relative_path
Constructor Details
This class inherits a constructor from RuboCop::Cop::Cop
Instance Method Details
#autocorrect(node) ⇒ Object
59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 |
# File 'lib/rubocop/cop/performance/string_replacement.rb', line 59 def autocorrect(node) _string, method, first_param, second_param = *node first_source, = first_source(first_param) second_source, = *second_param if regex?(first_param) first_source = interpret_string_escapes(first_source) end replacement_method = replacement_method(method, first_source, second_source) lambda do |corrector| corrector.replace(node.loc.selector, replacement_method) unless first_param.str_type? corrector.replace(first_param.source_range, to_string_literal(first_source)) end if second_source.empty? && first_source.length == 1 remove_second_param(corrector, node, first_param) end end end |
#on_send(node) ⇒ Object
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 |
# File 'lib/rubocop/cop/performance/string_replacement.rb', line 33 def on_send(node) _string, method, first_param, second_param = *node return unless GSUB_METHODS.include?(method) return unless string?(second_param) return unless DETERMINISTIC_TYPES.include?(first_param.type) first_source, = first_source(first_param) second_source, = *second_param return if first_source.nil? if regex?(first_param) return unless first_source =~ DETERMINISTIC_REGEX return if # This must be done after checking DETERMINISTIC_REGEX # Otherwise things like \s will trip us up first_source = interpret_string_escapes(first_source) end return if first_source.length != 1 return unless second_source.length <= 1 = (method, first_source, second_source) add_offense(node, range(node), ) end |