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Contents
# encoding: utf-8
module RuboCop
module Cop
module Lint
# This cop checks for assignments in the conditions of
# if/while/until.
class AssignmentInCondition < Cop
include SafeAssignment
MSG = 'Assignment in condition - you probably meant to use `==`.'
def on_if(node)
check(node)
end
def on_while(node)
check(node)
end
def on_until(node)
check(node)
end
private
def check(node)
condition, = *node
# assignments inside blocks are not what we're looking for
return if condition.type == :block
condition.each_node(:begin, *EQUALS_ASGN_NODES) do |asgn_node|
# skip safe assignment nodes if safe assignment is allowed
return if safe_assignment_allowed? && safe_assignment?(asgn_node)
# assignment nodes from shorthand ops like ||= don't have operator
if asgn_node.type != :begin && asgn_node.loc.operator
add_offense(asgn_node, :operator)
end
end
end
end
end
end
end
Version data entries
7 entries across 7 versions & 2 rubygems