Class: RuboCop::Cop::Lint::PercentStringArray

Inherits:
Cop
  • Object
show all
Includes:
PercentLiteral
Defined in:
lib/rubocop/cop/lint/percent_string_array.rb

Overview

This cop checks for quotes and commas in %w, e.g. ‘%w(’foo’, “bar”)‘

It is more likely that the additional characters are unintended (for example, mistranslating an array of literals to percent string notation) rather than meant to be part of the resulting strings.

Examples:


# bad

%w('foo', "bar")

# good

%w(foo bar)

Constant Summary collapse

QUOTES_AND_COMMAS = 
[/,$/, /^'.*'$/, /^".*"$/].freeze
LEADING_QUOTE = 
/^['"]/
TRAILING_QUOTE = 
/['"]?,?$/
MSG = 
"Within `%w`/`%W`, quotes and ',' are unnecessary and may be " \
'unwanted in the resulting strings.'.freeze

Constants included from PercentLiteral

PercentLiteral::PERCENT_LITERAL_TYPES

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 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

#s

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?, effective_column, ends_its_line?, escape_string, first_part_of_call_chain, interpret_string_escapes, line_range, needs_escaping?, on_node, operator?, parentheses?, parenthesized_call?, precede?, 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?, find_file_upwards, 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

rubocop:disable Performance/HashEachMethods



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# File 'lib/rubocop/cop/lint/percent_string_array.rb', line 44

def autocorrect(node)
  lambda do |corrector|
    node.values.each do |value|
      range = value.loc.expression

      match = range.source.match(TRAILING_QUOTE)
      corrector.remove_trailing(range, match[0].length) if match

      if range.source =~ LEADING_QUOTE
        corrector.remove_leading(range, 1)
      end
    end
  end
end

#on_array(node) ⇒ Object 



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# File 'lib/rubocop/cop/lint/percent_string_array.rb', line 33

def on_array(node)
  process(node, '%w', '%W')
end

#on_percent_literal(node) ⇒ Object 



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# File 'lib/rubocop/cop/lint/percent_string_array.rb', line 37

def on_percent_literal(node)
  return unless contains_quotes_or_commas?(node)

  add_offense(node)
end