Class: RuboCop::Cop::Style::UnneededInterpolation

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

Overview

This cop checks for strings that are just an interpolated expression.

Examples:


# bad
"#{@var}"

# good
@var.to_s

# good if @var is already a String
@var

Constant Summary collapse

MSG = 
'Prefer `to_s` over string interpolation.'.freeze

Constants included from Util

Util::LITERAL_REGEX

Instance Attribute Summary

Attributes inherited from Cop

#config, #corrections, #offenses, #processed_source

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Cop

#add_offense, all, 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?, 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

Class Method Details

.autocorrect_incompatible_with ⇒ Object 



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# File 'lib/rubocop/cop/style/unneeded_interpolation.rb', line 23

def self.autocorrect_incompatible_with
  [Style::LineEndConcatenation]
end

Instance Method Details

#autocorrect(node) ⇒ Object 



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# File 'lib/rubocop/cop/style/unneeded_interpolation.rb', line 31

def autocorrect(node)
  embedded_node = node.children.first

  if variable_interpolation?(embedded_node)
    autocorrect_variable_interpolation(embedded_node, node)
  elsif single_variable_interpolation?(embedded_node)
    autocorrect_single_variable_interpolation(embedded_node, node)
  else
    autocorrect_other(embedded_node, node)
  end
end

#on_dstr(node) ⇒ Object 



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# File 'lib/rubocop/cop/style/unneeded_interpolation.rb', line 27

def on_dstr(node)
  add_offense(node) if single_interpolation?(node)
end