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Contents
module NxtSupport
module HashTranslator
class HashTranslationService
class InvalidTranslationArgument < StandardError; end
require 'nxt_init'
include NxtInit
attr_init :hash, :tuples
def call
tuples.inject(hash.with_indifferent_access) do |acc, (old_key, new_key)|
if new_key.is_a?(Hash)
raise InvalidTranslationArgument.new("#{new_key} hash must contain only 1 key-value pair!") if new_key.size > 1
key, value = new_key.shift
raise InvalidTranslationArgument.new("#{value} must be a callable block!") unless value.respond_to?(:call)
acc[key] = value.call(acc.delete(old_key))
elsif new_key.is_a?(Array)
value = acc.delete(old_key)
new_key.each { |key| acc[key] = value }
else
acc[new_key] = acc.delete(old_key)
end
acc
end
end
end
def translate_hash(hash, **tuples)
HashTranslationService.new(hash: hash, tuples: tuples).call
end
end
end
Version data entries
17 entries across 17 versions & 1 rubygems