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Contents
# frozen_string_literal: true
require 'active_support/core_ext/object/duplicable'
module FrozenRecord
module Deduplication
extend self
# We deduplicate data in place because it is assumed it directly
# comes from the parser, and won't be held by anyone.
#
# Frozen Hashes and Arrays are ignored because they are likely
# the result of the use of YAML anchor. Meaning we already deduplicated
# them.
if RUBY_VERSION >= '2.7'
def deep_deduplicate!(data)
case data
when Hash
return data if data.frozen?
data.transform_keys! { |k| deep_deduplicate!(k) }
data.transform_values! { |v| deep_deduplicate!(v) }
data.freeze
when Array
return data if data.frozen?
data.map! { |d| deep_deduplicate!(d) }.freeze
when String
-data
else
data.duplicable? ? data.freeze : data
end
end
else
def deep_deduplicate!(data)
case data
when Hash
return data if data.frozen?
data.transform_keys! { |k| deep_deduplicate!(k) }
data.transform_values! { |v| deep_deduplicate!(v) }
data.freeze
when Array
return data if data.frozen?
data.map! { |d| deep_deduplicate!(d) }.freeze
when String
# String#-@ doesn't deduplicate the string if it's tainted.
# So in such case we need to untaint it first.
if data.tainted?
-(+data).untaint
else
-data
end
else
data.duplicable? ? data.freeze : data
end
end
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems