public void ToStringTest()
{
ElementAttributeExpression attributeExpression = new ElementAttributeExpression(
ElementAttributeType.Name);
StringExpression stringExpression = new StringExpression("Test");
BinaryOperatorExpression equalsExpression = new BinaryOperatorExpression(
BinaryExpressionOperator.Equal,
attributeExpression,
stringExpression);
UnaryOperatorExpression operatorExpression = new UnaryOperatorExpression(
UnaryExpressionOperator.Negate,
equalsExpression);
Assert.AreEqual("!(($(Element.Name) == 'Test'))", operatorExpression.ToString());
}
private string GetExpression(UnaryOperatorExpression expression, ref List <OleDbParameter> parameters)
{
if (expression is NotExpression)
{
return(GetExpression(expression as NotExpression, ref parameters));
}
if (expression is ParenthesesExpression)
{
return(GetExpression(expression as ParenthesesExpression, ref parameters));
}
else
{
return(expression.ToString());
}
}
private string GetExpression(UnaryOperatorExpression expression, ref List<OleDbParameter> parameters)
{
if (expression is NotExpression)
{
return GetExpression(expression as NotExpression, ref parameters);
}
if (expression is ParenthesesExpression)
{
return GetExpression(expression as ParenthesesExpression, ref parameters);
}
else
return expression.ToString();
}
public override object Visit(UnaryOperatorExpression unaryOperatorExpression, object data)
{
Console.WriteLine(unaryOperatorExpression.ToString());
return unaryOperatorExpression.AcceptChildren(this, data);
}
public void ToStringInvalidOperatorTest()
{
ElementAttributeExpression attributeExpression = new ElementAttributeExpression(
ElementAttributeType.Name);
StringExpression stringExpression = new StringExpression("Test");
BinaryOperatorExpression equalsExpression = new BinaryOperatorExpression(
BinaryExpressionOperator.Equal,
attributeExpression,
stringExpression);
UnaryOperatorExpression operatorExpression = new UnaryOperatorExpression(
(UnaryExpressionOperator)int.MinValue,
equalsExpression);
Assert.AreEqual(string.Format("{0}(($(Element.Name) == 'Test'))", int.MinValue), operatorExpression.ToString());
}
