Class: MTG::Card::ManaCost

Inherits:
Object
  • Object
show all
Defined in:
lib/mtg/card/mana_cost.rb

Constant Summary collapse

NON_ZERO_PATTERN = 
/^(X*)([1-9]\d*)?([BGRUW]*)$/

Instance Method Summary collapse

Constructor Details

#initialize(str) ⇒ ManaCost

Returns a new instance of ManaCost.



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# File 'lib/mtg/card/mana_cost.rb', line 7

def initialize(str)
  str = str.to_s.strip.upcase
  if (str != '') && str != '0' && !(str =~ NON_ZERO_PATTERN)
    raise ArgumentError, "invalid mana cost"
  end
  @str = str
end

Instance Method Details

#converted ⇒ Object 



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# File 'lib/mtg/card/mana_cost.rb', line 19

def converted
  if ['', '0'].include?(@str)
    0
  else
    @str =~ NON_ZERO_PATTERN
    $2.to_i + $3.length
  end
end

#to_s ⇒ Object 



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# File 'lib/mtg/card/mana_cost.rb', line 15

def to_s
  @str
end