Class: PfrpgCore::NullObject

Inherits:
Numeric
  • Object
show all
Defined in:
lib/pfrpg_core/null_object.rb

Class Method Summary collapse

Instance Method Summary collapse

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(*args, &block) ⇒ Object 



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# File 'lib/pfrpg_core/null_object.rb', line 17

def method_missing(*args, &block)
  self
end

Class Method Details

.maybe(value) ⇒ Object 



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# File 'lib/pfrpg_core/null_object.rb', line 21

def self.maybe(value)
  case value
    when nil then NullObject.new
    else value
  end
end

Instance Method Details

#+(other) ⇒ Object 



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# File 'lib/pfrpg_core/null_object.rb', line 28

def +(other)
  case other
    when String
      to_s + other
    when Fixnum
      to_i + other
    when Float
      to_f + other
  end
end

#as_json(options = {}) ⇒ Object 



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# File 'lib/pfrpg_core/null_object.rb', line 13

def as_json(options={})
  ""
end

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/pfrpg_core/null_object.rb', line 9

def empty?
  true
end

#to_a ⇒ Object 



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# File 'lib/pfrpg_core/null_object.rb', line 3

def to_a; []; end

#to_f ⇒ Object 



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# File 'lib/pfrpg_core/null_object.rb', line 6

def to_f; 0.0; end

#to_i ⇒ Object 



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# File 'lib/pfrpg_core/null_object.rb', line 7

def to_i; 0; end

#to_s ⇒ Object 



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# File 'lib/pfrpg_core/null_object.rb', line 4

def to_s; ""; end

#to_str ⇒ Object 



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# File 'lib/pfrpg_core/null_object.rb', line 5

def to_str; ""; end