Class: MeasureScaler::Measure

Inherits:
Object
  • Object
show all
Defined in:
lib/measure_scaler/measure.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(qty, unit, precision = nil) ⇒ Measure

Measure.new(12500.34, “MWh”)

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# File 'lib/measure_scaler/measure.rb', line 6

def initialize(qty, unit, precision=nil)
  @qty, @precision = qty, precision
  @unit            = unit.is_a?(Unit) ? unit : Unit.new(unit)
end

Instance Attribute Details

#precision ⇒ Object (readonly)

Returns the value of attribute precision.


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# File 'lib/measure_scaler/measure.rb', line 3

def precision
  @precision
end

#qty ⇒ Object (readonly)

Returns the value of attribute qty.


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# File 'lib/measure_scaler/measure.rb', line 3

def qty
  @qty
end

#unit ⇒ Object (readonly)

Returns the value of attribute unit.


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# File 'lib/measure_scaler/measure.rb', line 3

def unit
  @unit
end

Instance Method Details

#scale ⇒ Object

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# File 'lib/measure_scaler/measure.rb', line 11

def scale
  # TODO: gestisci unità non riconosciute (non valide)


  if @unit.pattern_found?
    ord = @qty.scaling_proposal # multipli di 3
    ord, new_unit = @unit.scale(ord)
    qty = @qty.scale(ord)
    qty = precisize(qty) if @precision
    Measure.new(qty, new_unit, @precision)
  else
    @qty = precisize(@qty) if @precision
    self
  end
end

#to_s ⇒ Object

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# File 'lib/measure_scaler/measure.rb', line 27

def to_s
  "#{@qty} #{@unit}"
end