Class: RuboCop::Cop::Lint::LiteralInInterpolation

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

Overview

This cop checks for interpolated literals.

Examples:


"result is #{10}"

Constant Summary collapse

LITERALS = 
[:str, :dstr, :int, :float, :array,
:hash, :regexp, :nil, :true, :false]
MSG = 
'Literal interpolation detected.'

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 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_comma, 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

#on_dstr(node) ⇒ Object 



17
18
19
20
21
22
23
24
25
26
27
 
# File 'lib/rubocop/cop/lint/literal_in_interpolation.rb', line 17

def on_dstr(node)
  node.children.select { |n| n.type == :begin }.each do |begin_node|
    final_node = begin_node.children.last
    next unless final_node
    # handle strings like __FILE__
    return if special_string?(final_node)
    next unless LITERALS.include?(final_node.type)

    add_offense(final_node, :expression)
  end
end