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Contents
# frozen_string_literal: true
class ReeObject::DeepFreeze
include Ree::FnDSL
fn :deep_freeze
doc(<<~DOC)
Deeply freezes object.
Examples of usage:
deep_freeze(Object.new)
DOC
contract(Any => Any)
def call(obj)
recursively_freeze(obj, {})
end
private
def recursively_freeze(obj, cache)
if obj.class == Array
freeze_array(obj, cache)
elsif obj.class == Hash
freeze_hash(obj, cache)
else
freeze_obj(obj, cache)
end
end
def freeze_array(array, cache)
array.each { recursively_freeze(_1, cache) }
array.freeze
end
def freeze_hash(hash, cache)
hash.default.freeze
hash.each do |k, v|
recursively_freeze(k, cache)
recursively_freeze(v, cache)
end
hash.freeze
end
def freeze_obj(obj, cache)
return obj if obj.is_a?(Class) || obj.is_a?(Module)
return cache[obj.object_id] if cache.key?(obj.object_id)
cache[obj.object_id] = obj
obj.instance_variables.each do |var|
recursively_freeze(obj.instance_variable_get(var), cache)
end
obj.freeze
end
end
Version data entries
124 entries across 124 versions & 1 rubygems