Class: AttrExtras::AttrInitialize::ParamsBuilder

Inherits:
Object
  • Object
show all
Defined in:
lib/attr_extras/params_builder.rb

Constant Summary collapse

REQUIRED_SIGN = 
"!".freeze

Instance Method Summary collapse

Constructor Details

#initialize(names) ⇒ ParamsBuilder

Returns a new instance of ParamsBuilder.



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# File 'lib/attr_extras/params_builder.rb', line 6

def initialize(names)
  @names = names
end

Instance Method Details

#default_values ⇒ Object 



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# File 'lib/attr_extras/params_builder.rb', line 32

def default_values
  @default_values ||= begin
    default_values_hash = names.flatten.select { |name| name.is_a?(Hash) }.inject(:merge) || {}

    default_values_hash.map { |name, value|
      [ remove_required_sign(name), value ]
    }.to_h
  end
end

#hash_args ⇒ Object 



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# File 'lib/attr_extras/params_builder.rb', line 17

def hash_args
  @hash_args ||= (names - positional_args).flatten.flat_map { |name|
    name.is_a?(Hash) ? name.keys : name
  }
end

#hash_args_names ⇒ Object 



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# File 'lib/attr_extras/params_builder.rb', line 23

def hash_args_names
  @hash_args_names ||= hash_args.map { |name| remove_required_sign(name) }
end

#hash_args_required ⇒ Object 



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# File 'lib/attr_extras/params_builder.rb', line 27

def hash_args_required
  @hash_args_required ||= hash_args.select { |name| name.to_s.end_with?(REQUIRED_SIGN) }.
    map { |name| remove_required_sign(name) }
end

#positional_args ⇒ Object 



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# File 'lib/attr_extras/params_builder.rb', line 13

def positional_args
  @positional_args ||= names.take_while { |name| !name.is_a?(Array) }
end