Class: RuboCop::Cop::Style::CharacterLiteral

Inherits:
Cop
  • Object
show all
Includes:
RuboCop::Cop::StringHelp
Defined in:
lib/rubocop/cop/style/character_literal.rb

Overview

Checks for uses of the character literal ?x.

Constant Summary collapse

MSG = 
'Do not use the character literal - use string literal instead.'

Constants included from RuboCop::Cop::StringHelp

RuboCop::Cop::StringHelp::ESCAPED_CHAR_REGEXP

Constants included from Util

Util::ASGN_NODES, Util::EQUALS_ASGN_NODES, 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 included from RuboCop::Cop::StringHelp

#on_regexp, #on_str

Methods inherited from Cop

#add_offense, all, #autocorrect?, #config_to_allow_offenses, #config_to_allow_offenses=, #cop_config, #cop_name, cop_name, cop_name_with_namespace, cop_type, #debug?, #display_cop_names?, inherited, #initialize, #join_force?, lint?, #message, non_rails, qualified_cop_name, rails?, #relevant_file?, #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, first_part_of_call_chain, lambda?, lambda_or_proc?, line_range, numeric_range_size, on_node, operator?, parentheses?, proc?, range_with_surrounding_space, source_range, strip_quotes, within_node?

Methods included from PathUtil

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/style/character_literal.rb', line 18

def autocorrect(node)
  @corrections << lambda do |corrector|
    string = node.loc.expression.source[1..-1]

    if string.length == 1 # normal character
      corrector.replace(node.loc.expression, "'#{string}'")
    elsif string.length == 2 # special character like \n
      corrector.replace(node.loc.expression, %("#{string}"))
    end
  end
end

#correct_style_detected ⇒ Object

Dummy implementation of method in ConfigurableEnforcedStyle that is called from StringHelp.



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# File 'lib/rubocop/cop/style/character_literal.rb', line 37

def correct_style_detected
end

#offense?(node) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rubocop/cop/style/character_literal.rb', line 12

def offense?(node)
  # we don't register an offense for things like ?\C-\M-d
  node.loc.begin.is?('?') &&
    node.loc.expression.source.size.between?(2, 3)
end

#opposite_style_detected ⇒ Object

Dummy implementation of method in ConfigurableEnforcedStyle that is called from StringHelp.



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# File 'lib/rubocop/cop/style/character_literal.rb', line 32

def opposite_style_detected
end