Sha256: 9ee56f32f6a5f06cf7484765e1f5716766265f1a3cc4055f3bfae32d57afc654
Contents?: true
Size: 835 Bytes
Versions: 5
Compression:
Stored size: 835 Bytes
Contents
# encoding: utf-8
module RuboCop
module Cop
module Style
# This cop checks whether some constant value isn't a
# mutable literal (e.g. array or hash).
#
# @example
# # bad
# CONST = [1, 2, 3]
#
# # good
# CONST = [1, 2, 3].freeze
class MutableConstant < Cop
MSG = 'Freeze mutable objects assigned to constants.'
MUTABLE_TYPES = [:array, :hash, :str, :dstr].freeze
def on_casgn(node)
_scope, _const_name, value = *node
return if value && !MUTABLE_TYPES.include?(value.type)
add_offense(value, :expression)
end
def autocorrect(node)
expr = node.loc.expression
->(corrector) { corrector.replace(expr, "#{expr.source}.freeze") }
end
end
end
end
end
Version data entries
5 entries across 5 versions & 1 rubygems