module Beryl::Utils

Public Instance Methods

constantize(camel_cased_word) click to toggle source
# File lib/beryl/utils.rb, line 5
def constantize(camel_cased_word)
  names = camel_cased_word.split('::'.freeze)

  # Trigger a built-in NameError exception including the ill-formed constant in the message.
  Object.const_get(camel_cased_word) if names.empty?

  # Remove the first blank element in case of '::ClassName' notation.
  names.shift if names.size > 1 && names.first.empty?

  names.inject(Object) do |constant, name|
    if constant == Object
      constant.const_get(name)
    else
      candidate = constant.const_get(name)
      next candidate if constant.const_defined?(name, false)
      next candidate unless Object.const_defined?(name)

      # Go down the ancestors to check if it is owned directly. The check
      # stops when we reach Object or the end of ancestors tree.
      constant = constant.ancestors.inject(constant) do |const, ancestor|
        break const    if ancestor == Object
        break ancestor if ancestor.const_defined?(name, false)
        const
      end

      # owner is in Object, so raise
      constant.const_get(name, false)
    end
  end
end
deep_symbolize_keys(hash) click to toggle source
# File lib/beryl/utils.rb, line 36
def deep_symbolize_keys(hash)
  deep_transform_keys_in_object(hash) { |key| key.to_sym rescue key }
end

Private Instance Methods

deep_transform_keys_in_object(object) { |key| ... } click to toggle source
# File lib/beryl/utils.rb, line 42
def deep_transform_keys_in_object(object, &block)
  case object
  when Hash
    object.each_with_object({}) do |(key, value), result|
      result[yield(key)] = deep_transform_keys_in_object(value, &block)
    end
  when Array
    object.map {|e| deep_transform_keys_in_object(e, &block) }
  else
    object
  end
end