class IDL::Expression::Operation

def initialize(*_operands)
  n = self.class::NUMBER_OF_OPERANDS
  if _operands.size != n
    raise format("%s must receive %d operand%s.",
      self.typename, n, if (n>1) then "s" else "" end)
  end
  unless _operands.any? { |o| o.is_template? }
    @idltype = self.class.suite_type(*(_operands.collect{|o| o.idltype.resolved_type}))
    @value = calculate(*(_operands.collect{|o| o.value}))
  else
    @idltype = nil
    @value = nil
  end
  @operands = _operands
  self.set_type
end

def instantiate(_context)
  self.is_template? ? self.class.new(*@operands.collect { |o| o.instantiate(_context) }) : self
end

def is_template?
  @operands.any? { |o| o.is_template? }
end

def set_type
end