Sha256: 0066f07061124f95b3f93c05b91618ad3f858a5c687e7a91a8a4ffd68e69928d
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Size: 1.06 KB
Versions: 9
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Stored size: 1.06 KB
Contents
# encoding: utf-8
module RuboCop
module Cop
module Style
# This cop checks for uses of "*" as a substitute for *join*.
#
# Not all cases can reliably checked, due to Ruby's dynamic
# types, so we consider only cases when the first argument is an
# array literal or the second is a string literal.
class ArrayJoin < Cop
MSG = 'Favor `Array#join` over `Array#*`.'
def on_send(node)
receiver_node, method_name, *arg_nodes = *node
return unless receiver_node && receiver_node.type == :array &&
method_name == :* && arg_nodes[0].type == :str
add_offense(node, :selector)
end
def autocorrect(node)
receiver_node, _method_name, *arg_nodes = *node
expr = node.loc.expression
array = receiver_node.loc.expression.source
join_arg = arg_nodes[0].loc.expression.source
lambda do |corrector|
corrector.replace(expr, "#{array}.join(#{join_arg})")
end
end
end
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems