Class: Rubocop::Cop::Style::VariableInterpolation

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

Overview

This cop checks for variable interpolation (like "#@ivar").

Constant Summary collapse

MSG = 
'Replace interpolated var %s with expression #{%s}.'

Constants inherited from Cop

Cop::OPERATOR_METHODS

Constants included from Util

Util::PROC_NEW_NODE

Instance Attribute Summary

Attributes inherited from Cop

#config, #corrections, #offences, #processed_source

Instance Method Summary collapse

Methods inherited from Cop

#add_offence, all, #autocorrect?, #config_to_allow_offences, #config_to_allow_offences=, #cop_config, cop_name, #cop_name, cop_type, #debug?, #exclude_file?, #exclude_paths, #ignore_node, #include_file?, #include_paths, inherited, #initialize, lint?, #message, non_rails, rails?, #relevant_file?, style?, #support_autocorrect?

Methods included from Util

block_length, command?, comment_line?, const_name, first_part_of_call_chain, lambda?, lambda_or_proc?, line_range, on_node, proc?, range_with_surrounding_space, source_range, strip_quotes

Constructor Details

This class inherits a constructor from Rubocop::Cop::Cop

Instance Method Details

#on_dstr(node) ⇒ Object 



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# File 'lib/rubocop/cop/style/variable_interpolation.rb', line 10

def on_dstr(node)
  var_nodes(node.children).each do |v|
    var = (v.type == :nth_ref ? '$' : '') + v.to_a[0].to_s

    if node.loc.expression.source.include?("##{var}")
      add_offence(v, :expression, sprintf(MSG, var, var))
    end
  end
end