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Contents?: true
Size: 1.16 KB
Versions: 13
Compression:
Stored size: 1.16 KB
Contents
# frozen_string_literal: true
module RuboCop
module Cop
module Style
# This cop checks for cases when you could use a block
# accepting version of a method that does automatic
# resource cleanup.
#
# @example
#
# # bad
# f = File.open('file')
#
# # good
# f = File.open('file') do
# ...
# end
class AutoResourceCleanup < Cop
MSG = 'Use the block version of `%s.%s`.'.freeze
TARGET_METHODS = [
[:File, :open]
].freeze
def on_send(node)
receiver_node, method_name, *arg_nodes = *node
TARGET_METHODS.each do |(target_class, target_method)|
target_receiver = s(:const, nil, target_class)
next if receiver_node != target_receiver
next if method_name != target_method
next if node.parent && node.parent.block_type?
next if !arg_nodes.empty? && arg_nodes.last.block_pass_type?
add_offense(node,
:expression,
format(MSG, target_class, target_method))
end
end
end
end
end
end
Version data entries
13 entries across 13 versions & 2 rubygems