Contents

# frozen_string_literal: true

module Dry
  module Transformer
    # Transformation functions for Procs
    #
    # @example
    #   require 'ostruct'
    #   require 'dry/transformer/proc'
    #
    #   include Dry::Transformer::Helper
    #
    #   fn = t(
    #     :map_value,
    #     'foo_bar',
    #     t(:bind, OpenStruct.new(prefix: 'foo'), -> s { [prefix, s].join('_') })
    #   )
    #
    #   fn["foo_bar" => "bar"]
    #   # => {"foo_bar" => "foo_bar"}
    #
    # @api public
    module ProcTransformations
      extend Registry

      # Change the binding for the given function
      #
      # @example
      #   Dry::Transformer(
      #     :bind,
      #     OpenStruct.new(prefix: 'foo'),
      #     -> s { [prefix, s].join('_') }
      #   )['bar']
      #   # => "foo_bar"
      #
      # @param [Proc]
      #
      # @return [Proc]
      #
      # @api public
      def self.bind(value, binding, fn)
        binding.instance_exec(value, &fn)
      end
    end
  end
end

Version data entries

4 entries across 4 versions & 1 rubygems

Version	Path
dry-transformer-1.0.1	lib/dry/transformer/proc_transformations.rb
dry-transformer-1.0.0	lib/dry/transformer/proc_transformations.rb
dry-transformer-0.1.1	lib/dry/transformer/proc.rb
dry-transformer-0.1.0	lib/dry/transformer/proc.rb