48 lines
1.6 KiB
Ruby
48 lines
1.6 KiB
Ruby
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# frozen_string_literal: true
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module RuboCop
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module Cop
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# Cop that blacklists the injecting of EE specific modules anywhere but on
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# the last line of a file. Injecting a module in the middle of a file will
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# cause merge conflicts, while placing it on the last line will not.
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class InjectEnterpriseEditionModule < RuboCop::Cop::Cop
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MSG = 'Injecting EE modules must be done on the last line of this file' \
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', outside of any class or module definitions'
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METHODS = Set.new(%i[include extend prepend]).freeze
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def_node_matcher :ee_const?, <<~PATTERN
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(const (const _ :EE) _)
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PATTERN
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def on_send(node)
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return unless METHODS.include?(node.children[1])
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return unless ee_const?(node.children[2])
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line = node.location.line
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buffer = node.location.expression.source_buffer
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last_line = buffer.last_line
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# Parser treats the final newline (if present) as a separate line,
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# meaning that a simple `line < last_line` would yield true even though
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# the expression is the last line _of code_.
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last_line -= 1 if buffer.source.end_with?("\n")
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add_offense(node) if line < last_line
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end
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# Automatically correcting these offenses is not always possible, as
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# sometimes code needs to be refactored to make this work. As such, we
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# only allow developers to easily blacklist existing offenses.
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def autocorrect(node)
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lambda do |corrector|
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corrector.insert_after(
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node.source_range,
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" # rubocop: disable #{cop_name}"
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)
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end
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end
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end
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end
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end
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