Class: KeyValueName::Builder

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

Overview

Yield-based Domain-Specific Language (DSL) to build a ‘KeyValueName`.

Defined Under Namespace

Modules: ClassMethods, InstanceMethods

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Builder

Returns a new instance of Builder.



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# File 'lib/key_value_name/builder.rb', line 41

def initialize
  @marshalers = {}
  @extension = nil
end

Instance Method Details

#build ⇒ Object

rubocop:disable Metrics/MethodLength



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# File 'lib/key_value_name/builder.rb', line 65

def build # rubocop:disable Metrics/MethodLength
  raise 'no keys defined' if @marshalers.none?

  klass = Struct.new(*@marshalers.keys) do
    def initialize(**kwargs)
      super(*kwargs.keys)
      kwargs.each { |k, v| self[k] = v }
    end

    include InstanceMethods

    class <<self
      include ClassMethods
      attr_accessor :key_value_name_spec
    end
  end
  klass.key_value_name_spec = Spec.new(@marshalers, @extension)
  klass
end

#extension(ext) ⇒ Object

rubocop:disable Style/TrivialAccessors



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# File 'lib/key_value_name/builder.rb', line 61

def extension(ext) # rubocop:disable Style/TrivialAccessors
  @extension = ext
end

#include_keys(key_value_name_klass) ⇒ Object 



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# File 'lib/key_value_name/builder.rb', line 46

def include_keys(key_value_name_klass)
  spec = key_value_name_klass.key_value_name_spec
  spec.marshalers.each do |name, marshaler|
    check_no_existing_marshaler(name)
    @marshalers[name] = marshaler
  end
end

#key(name, type:, **kwargs) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/key_value_name/builder.rb', line 54

def key(name, type:, **kwargs)
  KeyValueName.check_symbol(name)
  raise ArgumentError, "bad type: #{type}" unless MARSHALERS.key?(type)
  check_no_existing_marshaler(name)
  @marshalers[name] = MARSHALERS[type].new(**kwargs)
end