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# frozen_string_literal: true
module Nokogiri
module CSS
module SelectorCache # :nodoc:
@cache = {}
@mutex = Mutex.new
class << self
# Retrieve the cached XPath expressions for the key
def [](key)
@mutex.synchronize { @cache[key] }
end
# Insert the XPath expressions `value` at the cache key
def []=(key, value)
@mutex.synchronize { @cache[key] = value }
end
# Clear the cache
def clear_cache(create_new_object = false)
@mutex.synchronize do
if create_new_object # used in tests to avoid 'method redefined' warnings when injecting spies
@cache = {}
else
@cache.clear
end
end
end
# Construct a unique key cache key
def key(selector:, visitor:)
[selector, visitor.config]
end
end
end
end
end
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