Class: Rubocop::Cop::Style::SymbolArray

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

Overview

This cop checks for array literals made up of symbols that are not using the %i() syntax.

This check makes sense only on Ruby 2.0+.

Constant Summary collapse

MSG = 
'Use %i or %I for array of symbols.'

Instance Attribute Summary

Attributes inherited from Cop

#autocorrect, #corrections, #debug, #disabled_lines, #offences

Instance Method Summary collapse

Methods inherited from Cop

#add_offence, all, #autocorrect_action, cop_name, cop_type, #do_autocorrect, #ignore_node, inherited, #initialize, lint?, #name, rails?, style?

Constructor Details

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

Instance Method Details

#on_array(node) ⇒ Object 



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# File 'lib/rubocop/cop/style/symbol_array.rb', line 13

def on_array(node)
  # %i and %I were introduced in Ruby 2.0
  unless RUBY_VERSION < '2.0.0'
    return unless node.loc.begin && node.loc.begin.is?('[')

    array_elems = node.children

    # no need to check empty arrays
    return unless array_elems && array_elems.size > 1

    symbol_array = array_elems.all? { |e| e.type == :sym }

    add_offence(:convention, node.loc.expression, MSG) if symbol_array
  end
end