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Contents
# frozen_string_literal: true
module RuboCop
module Cop
module Rails
# This cop looks for duplicate values in enum declarations.
#
# @example
# # bad
# enum status: { active: 0, archived: 0 }
#
# # good
# enum status: { active: 0, archived: 1 }
#
# # bad
# enum status: [:active, :archived, :active]
#
# # good
# enum status: [:active, :archived]
class EnumUniqueness < Base
include Duplication
MSG = 'Duplicate value `%<value>s` found in `%<enum>s` ' \
'enum declaration.'
RESTRICT_ON_SEND = %i[enum].freeze
def_node_matcher :enum?, <<~PATTERN
(send nil? :enum (hash $...))
PATTERN
def_node_matcher :enum_values, <<~PATTERN
(pair $_ ${array hash})
PATTERN
def on_send(node)
enum?(node) do |pairs|
pairs.each do |pair|
enum_values(pair) do |key, args|
items = args.values
next unless duplicates?(items)
consecutive_duplicates(items).each do |item|
add_offense(item, message: format(
MSG, value: item.source, enum: enum_name(key)
))
end
end
end
end
end
private
def enum_name(key)
case key.type
when :sym, :str
key.value
else
key.source
end
end
end
end
end
end
Version data entries
21 entries across 21 versions & 2 rubygems