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Contents
# frozen_string_literal: true
module RuboCop
module Cop
class VariableForce
# This class represents each reference of a variable.
class Reference
include Branchable
VARIABLE_REFERENCE_TYPES = (
[VARIABLE_REFERENCE_TYPE] +
OPERATOR_ASSIGNMENT_TYPES +
[ZERO_ARITY_SUPER_TYPE, SEND_TYPE]
).freeze
attr_reader :node, :scope
def initialize(node, scope)
unless VARIABLE_REFERENCE_TYPES.include?(node.type)
raise ArgumentError,
"Node type must be any of #{VARIABLE_REFERENCE_TYPES}, " \
"passed #{node.type}"
end
@node = node
@scope = scope
end
# There's an implicit variable reference by the zero-arity `super`:
#
# def some_method(foo)
# super
# end
#
# Another case is `binding`:
#
# def some_method(foo)
# do_something(binding)
# end
#
# In these cases, the variable `foo` is not explicitly referenced,
# but it can be considered used implicitly by the `super` or `binding`.
def explicit?
![ZERO_ARITY_SUPER_TYPE, SEND_TYPE].include?(@node.type)
end
end
end
end
end
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