Module: CountryCodes::Internal::Helpers
- Included in:
- Country, LookupTable
- Defined in:
- lib/country_codes/internal/helpers.rb
Overview
Note:
This code is not supposed to be used externally!
Class Method Summary collapse
-
.included(obj) ⇒ Object
rubocop:disable Metrics/CyclomaticComplexity.
Instance Method Summary collapse
-
#pack_seq(enumerable) ⇒ JavaLangObject
Converts a given enumerable to a ‘scala.collection.Seq` Java object.
-
#unpack_seq(seq) ⇒ JavaLangObject
Converts a ‘scala.collection.Seq` Java object to a Ruby array.
-
#unpack_some(some) ⇒ Object
Unpacks a scala.Some Java object to a value or ‘nil` (if an object is empty).
Class Method Details
.included(obj) ⇒ Object
rubocop:disable Metrics/CyclomaticComplexity
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# File 'lib/country_codes/internal/helpers.rb', line 15 def self.included(obj) obj.class_eval do # Defines a method(s) that redirect calls to an underlying object (receiver). # Allows passing a list of interceptors that will be applied sequentially # with the result of redirected call as the first (and only) argument. # An interceptor can be either a Proc (the proc itself will be `#call`-ed), # or a Symbol as a name of an instance method to be used. # # @param [Array<Symbol>] methods Name of methods to be defined # @param [Object] to Name of an instance method used to retrieve the receiver # @param [Array<Proc, Symbol>] interceptors A list of interceptors. def self.delegate(*methods, to:, interceptors: []) unless methods.reject { |m| m.is_a? Symbol }.empty? raise ArgumentError, 'expected method reference to be a Symbol!' end interceptors = [interceptors] unless interceptors.is_a?(Array) methods.each do |method| define_method(method) do |*args| result = send(to).send(method, *args) interceptors.reduce(result) do |memo, interceptor| case interceptor when Proc interceptor.call(memo) when Symbol send(interceptor, memo) else memo end end end end end end end |
Instance Method Details
#pack_seq(enumerable) ⇒ JavaLangObject
Converts a given enumerable to a ‘scala.collection.Seq` Java object
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# File 'lib/country_codes/internal/helpers.rb', line 78 def pack_seq(enumerable) list_iter = ArrayList.new(enumerable.to_a).iterator JavaConverters.as_scala_iterator_converter(list_iter).as_scala.to_seq end |
#unpack_seq(seq) ⇒ JavaLangObject
Converts a ‘scala.collection.Seq` Java object to a Ruby array
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# File 'lib/country_codes/internal/helpers.rb', line 70 def unpack_seq(seq) JavaConverters.seq_as_java_list(seq).to_a end |
#unpack_some(some) ⇒ Object
Unpacks a scala.Some Java object to a value or ‘nil` (if an object is empty).
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# File 'lib/country_codes/internal/helpers.rb', line 58 def unpack_some(some) if some.empty? nil else some.get end end |