Module: SmartInit

Included in:
Base
Defined in:
lib/smart_init.rb,
lib/smart_init/main.rb,
lib/smart_init/version.rb

Defined Under Namespace

Classes: Base

Constant Summary collapse

VERSION = 
"5.1.0"

Instance Method Summary collapse

Instance Method Details

#initialize_with_hash(*required_attrs, **default_values_and_opts) ⇒ Object Also known as: initialize_with 



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# File 'lib/smart_init/main.rb', line 16

def initialize_with_hash(*required_attrs, **default_values_and_opts)
  public_readers = default_values_and_opts.delete(:public_readers) || []
  public_accessors = default_values_and_opts.delete(:public_accessors) || []
  if public_readers == true || public_accessors == true
    public_readers = required_attrs + default_values_and_opts.keys
    public_accessors = required_attrs + default_values_and_opts.keys if public_accessors == true
  else
    public_readers += public_accessors
  end

  define_method :initialize do |**parameters|
    required_attrs.each do |required_attr|
      unless parameters.has_key?(required_attr)
        raise ArgumentError, "missing required attribute #{required_attr}"
      end
    end

    parameters.keys.each do |param|
      if !(required_attrs + [:public_readers, :public_accessors]).include?(param) && !default_values_and_opts.keys.include?(param)
        raise ArgumentError, "invalid attribute '#{param}'"
      end
    end

    (required_attrs + default_values_and_opts.keys).each do |attribute|
      value = if parameters.has_key?(attribute)
          parameters.fetch(attribute)
        else
          default_values_and_opts[attribute]
        end

      instance_variable_set("@#{attribute}", value)
    end
  end

  instance_eval do
    all_readers = (required_attrs + default_values_and_opts.keys)
    attr_reader(*all_readers)
    (all_readers - public_readers).each do |reader|
      private reader
    end
    attr_writer(*public_accessors)
  end
end

#is_callable(opts = {}) ⇒ Object 



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# File 'lib/smart_init/main.rb', line 4

def is_callable(opts = {})
  method_name = if name_from_opts = opts[:method_name]
      name_from_opts.to_sym
    else
      :call
    end

  define_singleton_method method_name do |**parameters|
    new(**parameters).public_send(method_name)
  end
end