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Contents
# encoding: utf-8
module RuboCop
module Cop
module Lint
# This cop checks for underscore-prefixed variables that are actually
# used.
class UnderscorePrefixedVariableName < Cop
MSG = 'Do not use prefix `_` for a variable that is used.'
def join_force?(force_class)
force_class == VariableForce
end
def after_leaving_scope(scope, _variable_table)
scope.variables.each_value do |variable|
check_variable(variable)
end
end
def check_variable(variable)
return unless variable.should_be_unused?
return if variable.references.empty?
return if variable.references.none?(&:explicit?)
node = variable.declaration_node
location = if node.type == :match_with_lvasgn
node.children.first.loc.expression
else
node.loc.name
end
add_offense(nil, location)
end
end
end
end
end
Version data entries
23 entries across 23 versions & 2 rubygems