Class: Xipai::Arrangement::Pair

Inherits:
Base
  • Object
show all
Defined in:
lib/xipai/arrangement/pair.rb

Instance Attribute Summary

Attributes inherited from Base

#params

Instance Method Summary collapse

Methods inherited from Base

#__attributes__, #__require_attributes__, attributes, #dump_replay_yaml, #initialize, #method_missing, #method_missing_hook, require_attributes, #to_replay_data, #valid!

Constructor Details

This class inherits a constructor from Xipai::Arrangement::Base

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class Xipai::Arrangement::Base

Instance Method Details

#apply ⇒ Object 



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# File 'lib/xipai/arrangement/pair.rb', line 15

def apply
  _hashcode, _shuffled_keys = Xipai::Core.scrumble!(
    key_words, hashcode, key_items, params
  ).tap {|me| break *[me[:hashcode], me[:shuffled]]}

  _hashcode, _shuffled_values = Xipai::Core.scrumble!(
    key_words, _hashcode, value_items, {}
  ).tap {|me| break *[me[:hashcode], me[:shuffled]]}

  result_set = pair(_shuffled_keys, _shuffled_values)

  return Xipai::Result.new(mode, _hashcode, result_set, params)
end

#pair(_keys, _values) ⇒ Object 



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# File 'lib/xipai/arrangement/pair.rb', line 29

def pair(_keys, _values)
  return Hash[Some[{a: _keys.size, b: _values.size}].match { |m|
    m.some(->(x){x[:a] > x[:b]}) {
      result = [].tap {|me|
        _keys.each.with_index do |key, index|
          Some[_values[index]].match do |mat|
            mat.some(->(x){!x.nil?}) { me.push([key, _values[index]]) }
            mat.some(->(x){ x.nil?}) { me.push([key, :null]) }
          end
        end
      }
    }
    m.some(->(x){x[:a] < x[:b]}) {
      result = [].tap {|me|
        _values.each.with_index do |value, index|
          Some[_keys[index]].match do |mat|
            mat.some(->(x){!x.nil?}) { me.push([key[index], value]) }
            mat.some(->(x){ x.nil?}) { me.push([index.to_s, value]) }
          end
        end
      }
    }
    m.some(->(x){x[:a] == x[:b]}) { |x|
      result = [].tap {|me|
        [*0..(x[:a].to_i-1)].each do |index|
          me.push([_keys[index], _values[index]])
        end
      }
    }
  }]
end