class Remap::Mapper::Xor

Represents two mappers that are combined with the ^ operator

@example Combine two mappers

class Mapper1 < Remap::Base
  contract do
    required(:a1)
  end
end

class Mapper2 < Remap::Base
  contract do
    required(:a2)
  end
end

state = Remap::State.call({ a2: 2 })
output = (Mapper1 ^ Mapper2).call!(state)
output.fetch(:value) # => { a2: 2 }

Public Instance Methods

call!(state, &error) click to toggle source

Succeeds if left or right succeeds, but not both

@param state [State]

@yieldparam [Failure] if mapper fails @yieldreturn [Failure]

@return [Result]

# File lib/remap/mapper/xor.rb, line 34
def call!(state, &error)
  state1 = left.call!(state) do |failure1|
    return right.call!(state) do |failure2|
      return error[failure1.merge(failure2)]
    end
  end

  state2 = right.call!(state) do
    return state1
  end

  state1.combine(state2).failure("Both left and right passed xor operation").then(&error)
end
inspect() click to toggle source

@return [String]

# File lib/remap/mapper/xor.rb, line 49
def inspect
  "%s ^ %s" % [left, right]
end
Also aliased as: to_s
to_s()
Alias for: inspect