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`.'
- DETERMINISTIC_REGEX =
/^[\w\s\-,"']+$/.freeze
- 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::BASIC_LITERALS, Util::EQUALS_ASGN_NODES, Util::LITERALS, Util::OPERATOR_METHODS, Util::PROC_NEW_NODE, Util::SHORTHAND_ASGN_NODES
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, qualified_cop_name, rails?, #reference_url, #relevant_file?, #style_guide_url
Methods included from NodePattern::Macros
#def_node_matcher, #def_node_search
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, command?, comment_line?, const_name, directions, first_part_of_call_chain, lambda?, lambda_or_proc?, line_range, move_pos, numeric_range_size, on_node, operator?, parentheses?, proc?, range_with_surrounding_comma, range_with_surrounding_space, source_range, strip_quotes, within_node?
Methods included from PathUtil
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
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# File 'lib/rubocop/cop/performance/string_replacement.rb', line 55 def autocorrect(node) _string, method, first_param, second_param = *node first_source, = first_source(first_param) second_source, = *second_param 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.loc.expression, escape(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
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# File 'lib/rubocop/cop/performance/string_replacement.rb', line 32 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 end return if first_source.length != 1 return unless second_source.length <= 1 = (method, first_source, second_source) add_offense(node, range(node), ) end |