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Contents
# encoding: utf-8
module RuboCop
module Cop
module Style
# This cop checks for variable interpolation (like "#@ivar").
class VariableInterpolation < Cop
MSG = 'Replace interpolated variable `%s` with expression `#{%s}`.'
def on_dstr(node)
check_for_interpolation(node)
end
def on_regexp(node)
check_for_interpolation(node)
end
def on_xstr(node)
check_for_interpolation(node)
end
private
def check_for_interpolation(node)
var_nodes(node.children).each do |v|
var = v.loc.expression.source
add_offense(v, :expression, format(MSG, var, var))
end
end
def autocorrect(node)
@corrections << lambda do |corrector|
expr = node.loc.expression
corrector.replace(expr, "{#{expr.source}}")
end
end
def var_nodes(nodes)
nodes.select { |n| [:ivar, :cvar, :gvar, :nth_ref].include?(n.type) }
end
end
end
end
end
Version data entries
12 entries across 12 versions & 2 rubygems