Class: Datacaster::Caster

Inherits:
Base
  • Object
show all
Defined in:
lib/datacaster/caster.rb

Instance Method Summary collapse

Methods included from Mixin

#&, #*, #call, #call_with_runtime, #cast_errors, #i18n_key, #i18n_map_keys, #i18n_scope, #i18n_vars, #then, #with_context, #with_object_context, #with_runtime, #|

Constructor Details

#initialize(&block) ⇒ Caster

Returns a new instance of Caster.



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# File 'lib/datacaster/caster.rb', line 3

def initialize(&block)
  raise "Expected block" unless block_given?

  @cast = block
end

Instance Method Details

#cast(object, runtime:) ⇒ Object

Raises:

  • (TypeError) 


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# File 'lib/datacaster/caster.rb', line 9

def cast(object, runtime:)
  result = Runtimes::Base.(runtime, @cast, object)

  if defined?(Dry::Monads::Result) && result.is_a?(Dry::Monads::Result)
    result = result.success? ? Datacaster.ValidResult(result.value!) : Datacaster.ErrorResult(result.failure)
  end

  raise TypeError.new("Either Datacaster::Result or Dry::Monads::Result " \
    "should be returned from cast block, instead got #{result.inspect}") unless result.is_a?(Datacaster::Result)

  result
end

#inspect ⇒ Object 



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# File 'lib/datacaster/caster.rb', line 22

def inspect
  "#<Datacaster::Caster>"
end