Class: Kalc::Ast::Negative

Inherits:
Object
  • Object
show all
Defined in:
lib/kalc/ast.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(value) ⇒ Negative

Returns a new instance of Negative.



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# File 'lib/kalc/ast.rb', line 39

def initialize(value)
  @value = value
end

Instance Attribute Details

#value ⇒ Object (readonly)

Returns the value of attribute value.



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# File 'lib/kalc/ast.rb', line 37

def value
  @value
end

Instance Method Details

#eval(context) ⇒ Object 



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# File 'lib/kalc/ast.rb', line 43

def eval(context)
  begin
    -(@value.eval(context))
  rescue
    @value.eval(context)
  end
end