Boo.Lang.Compiler.Steps.EmitAssembly.CanBeNegative C# (CSharp) Метод

        bool CanBeNegative(Expression expression, ref bool isNegative)
        {
            var integer = expression as IntegerLiteralExpression;
            if (integer != null)
            {
                if (integer.Value >= 0)
                    return false;
                isNegative = true;
            }
            return true;
        }