Class: TwirpRails::Configuration

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

Class Method Summary collapse

Class Method Details

.config_param(symbol, default_value = nil, &block) ⇒ Object 



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# File 'lib/twirp_rails.rb', line 14

def self.config_param(symbol, default_value = nil, &block)
  raise 'wrong args' if !default_value.nil? && block_given?

  if block_given?
    class_variable_set("@@#{symbol}_default", block)
    class_eval(<<~RUBY, __FILE__, __LINE__ + 1)
      def #{symbol}_default
        instance_eval &@@#{symbol}_default
      end
    RUBY
  else
    class_variable_set("@@#{symbol}_default", default_value)
    class_eval(<<~RUBY, __FILE__, __LINE__ + 1)
      def #{symbol}_default
        @@#{symbol}_default
      end
    RUBY
  end

  class_eval(<<~RUBY, __FILE__, __LINE__ + 1)
    def #{symbol}
      @#{symbol} ||= #{symbol}_default
    end
  RUBY

  class_eval(<<~RUBY, __FILE__, __LINE__ + 1)
    def #{symbol}?
      #{symbol}
    end

    def #{symbol}=(value)
      @#{symbol} = value
    end
  RUBY
end