class RuboCop::Cop::Style::Attr
Checks for uses of Module#attr.
@example
# bad - creates a single attribute accessor (deprecated in Ruby 1.9) attr :something, true attr :one, :two, :three # behaves as attr_reader # good attr_accessor :something attr_reader :one, :two, :three
Constants
- MSG
- RESTRICT_ON_SEND
Public Instance Methods
on_send(node)
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# File lib/rubocop/cop/style/attr.rb, line 24 def on_send(node) return unless node.command?(:attr) && node.arguments? # check only for method definitions in class/module body return if node.parent && !node.parent.class_type? && !class_eval?(node.parent) message = message(node) add_offense(node.loc.selector, message: message) do |corrector| autocorrect(corrector, node) end end
Private Instance Methods
autocorrect(corrector, node)
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# File lib/rubocop/cop/style/attr.rb, line 37 def autocorrect(corrector, node) attr_name, setter = *node.arguments node_expr = node.source_range attr_expr = attr_name.source_range remove = range_between(attr_expr.end_pos, node_expr.end_pos) if setter&.boolean_type? corrector.replace(node.loc.selector, replacement_method(node)) corrector.remove(remove) if remove end
message(node)
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# File lib/rubocop/cop/style/attr.rb, line 49 def message(node) format(MSG, replacement: replacement_method(node)) end
replacement_method(node)
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# File lib/rubocop/cop/style/attr.rb, line 53 def replacement_method(node) setter = node.last_argument if setter&.boolean_type? setter.true_type? ? 'attr_accessor' : 'attr_reader' else 'attr_reader' end end