Class: Dry::Monads::Extensions::PrettyPrint::LazyPrintValue Private

Inherits:
Module
  • Object
show all
Defined in:
lib/dry/monads/extensions/pretty_print.rb

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

Instance Method Summary collapse

Constructor Details

#initialize(constructor, success_prefix: "value=", error_prefix: "error=") ⇒ LazyPrintValue

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns a new instance of LazyPrintValue.



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# File 'lib/dry/monads/extensions/pretty_print.rb', line 28

def initialize(constructor, success_prefix: "value=", error_prefix: "error=")
  super()

  define_method(:pretty_print) do |pp|
    if promise.fulfilled?
      value = promise.value
      if Unit.equal?(value)
        if success_prefix.empty?
          pp.text "#{constructor}()"
        else
          pp.text "#{constructor}(#{success_prefix}())"
        end
      else
        pp.text "#{constructor}(#{success_prefix}"
        pp.group(1) do
          pp.breakable("")
          pp.pp(value)
        end
        pp.text ")"
      end
    elsif promise.rejected?
      pp.text "#{constructor}(#{error_prefix}#{promise.reason.inspect})"
    else
      pp.text "#{constructor}(?)"
    end
  end
end