Class: Opt::Constant

Inherits:
Expression show all
Defined in:
lib/opt/constant.rb

Instance Attribute Summary collapse

Attributes inherited from Expression

#parts

Instance Method Summary collapse

Methods inherited from Expression

#*, #-, #<, #<=, #==, #>, #>=, #coerce, to_expression

Constructor Details

#initialize(value) ⇒ Constant 



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# File 'lib/opt/constant.rb', line 5

def initialize(value)
  @value = value
end

Instance Attribute Details

#value ⇒ Object (readonly)

Returns the value of attribute value.



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# File 'lib/opt/constant.rb', line 3

def value
  @value
end

Instance Method Details

#+(other) ⇒ Object

simplify Ruby sum



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# File 'lib/opt/constant.rb', line 10

def +(other)
  @value == 0 ? other : super
end

#-@ ⇒ Object 



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# File 'lib/opt/constant.rb', line 18

def -@
  Constant.new(-value)
end

#inspect ⇒ Object 



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# File 'lib/opt/constant.rb', line 14

def inspect
  @value.to_s
end

#vars ⇒ Object 



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# File 'lib/opt/constant.rb', line 22

def vars
  @vars ||= []
end