Sha256: 830be34a34efc3912ca45b37f940d8801b3db59d97bfe99cfacf67e2d81e8771
Contents?: true
Size: 1.89 KB
Versions: 11
Compression:
Stored size: 1.89 KB
Contents
# frozen_string_literal: true
module RuboCop
module Cop
module Lint
# This cop checks for interpolated literals.
#
# @example
#
# "result is #{10}"
class LiteralInInterpolation < Cop
MSG = 'Literal interpolation detected.'.freeze
COMPOSITE = [:array, :hash, :pair, :irange, :erange].freeze
def on_dstr(node)
node.each_child_node(:begin) do |begin_node|
final_node = begin_node.children.last
next unless final_node
next if special_keyword?(final_node)
next unless prints_as_self?(final_node)
add_offense(final_node, :expression)
end
end
def autocorrect(node)
return if node.dstr_type? # nested, fixed in next iteration
value = autocorrected_value(node)
->(corrector) { corrector.replace(node.parent.source_range, value) }
end
private
def special_keyword?(node)
# handle strings like __FILE__
(node.str_type? && !node.loc.respond_to?(:begin)) ||
node.source_range.is?('__LINE__')
end
def autocorrected_value(node)
case node.type
when :str
node.children.last
when :sym
autocorrected_value_for_symbol(node)
else
node.source.gsub('"', '\"')
end
end
def autocorrected_value_for_symbol(node)
end_pos =
node.loc.end ? node.loc.end.begin_pos : node.loc.expression.end_pos
range_between(node.loc.begin.end_pos, end_pos).source
end
# Does node print its own source when converted to a string?
def prints_as_self?(node)
node.basic_literal? ||
(COMPOSITE.include?(node.type) &&
node.children.all? { |child| prints_as_self?(child) })
end
end
end
end
end
Version data entries
11 entries across 11 versions & 2 rubygems