activerecord/lib/active_record/connection_adapters/type/hash_lookup_type_map.rb


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module ActiveRecord
  module ConnectionAdapters
    module Type
      class HashLookupTypeMap < TypeMap # :nodoc:
        delegate :key?, to: :@mapping

        def lookup(type, *args)
          @mapping.fetch(type, proc { default_value }).call(type, *args)
        end

        def fetch(type, *args, &block)
          @mapping.fetch(type, block).call(type, *args)
        end

        def alias_type(type, alias_type)
          register_type(type) { |_, *args| lookup(alias_type, *args) }
        end
      end
    end
  end
end