public void EvaluateAndTest()
{
IConditionExpression nameExpression = new BinaryOperatorExpression(
BinaryExpressionOperator.Equal,
new ElementAttributeExpression(ElementAttributeType.Name),
new StringExpression("Test"));
IConditionExpression attributeExpression = new BinaryOperatorExpression(
BinaryExpressionOperator.Equal,
new ElementAttributeExpression(ElementAttributeType.Access),
new StringExpression("Protected"));
IConditionExpression expression = new BinaryOperatorExpression(
BinaryExpressionOperator.And, nameExpression, attributeExpression);
FieldElement element = new FieldElement();
element.Name = "Test";
element.Access = CodeAccess.Protected;
bool result = ConditionExpressionEvaluator.Instance.Evaluate(
expression, element);
Assert.IsTrue(result, "Unexpected expression evaluation result.");
element.Name = "Foo";
result = ConditionExpressionEvaluator.Instance.Evaluate(
expression, element);
Assert.IsFalse(result, "Unexpected expression evaluation result.");
element.Name = "Test";
element.Access = CodeAccess.Private;
result = ConditionExpressionEvaluator.Instance.Evaluate(
expression, element);
Assert.IsFalse(result, "Unexpected expression evaluation result.");
}
public void ToStringInvalidOperatorTest()
{
ElementAttributeExpression attributeExpression = new ElementAttributeExpression(ElementAttributeType.Name);
StringExpression stringExpression = new StringExpression("Test");
BinaryOperatorExpression operatorExpression = new BinaryOperatorExpression(
(BinaryExpressionOperator) int.MinValue,
attributeExpression,
stringExpression);
Assert.AreEqual(string.Format("($(Element.Name) {0} 'Test')", int.MinValue), operatorExpression.ToString());
}
public void ToStringTest()
{
ElementAttributeExpression attributeExpression = new ElementAttributeExpression(
ElementAttributeType.Name);
StringExpression stringExpression = new StringExpression("Test");
BinaryOperatorExpression operatorExpression = new BinaryOperatorExpression(
BinaryExpressionOperator.Equal,
attributeExpression,
stringExpression);
Assert.AreEqual("($(Element.Name) == 'Test')", operatorExpression.ToString());
}
public void EvaluateElementNameContainsTest()
{
IConditionExpression expression = new BinaryOperatorExpression(
BinaryExpressionOperator.Contains,
new ElementAttributeExpression(ElementAttributeType.Name),
new StringExpression("Test"));
FieldElement element = new FieldElement();
element.Name = "Test";
bool result = ConditionExpressionEvaluator.Instance.Evaluate(
expression, element);
Assert.IsTrue(result, "Unexpected expression evaluation result.");
element.Name = "OnTest1";
result = ConditionExpressionEvaluator.Instance.Evaluate(
expression, element);
Assert.IsTrue(result, "Unexpected expression evaluation result.");
element.Name = "Foo";
result = ConditionExpressionEvaluator.Instance.Evaluate(
expression, element);
Assert.IsFalse(result, "Unexpected expression evaluation result.");
}
/// <summary>
/// Takes in a list of expressions and operator expression placeholders and
/// builds an expression tree node.
/// </summary>
/// <param name="originalNodes">Original nodes.</param>
/// <param name="originalExpression">Original expression.</param>
/// <returns>A condition expression.</returns>
private static IConditionExpression AssembleExpressionTree(
ReadOnlyCollection<IConditionExpression> originalNodes, string originalExpression)
{
IConditionExpression conditionExpression = null;
List<IConditionExpression> nodes = new List<IConditionExpression>(originalNodes);
//
// Build a queue that represents the binary operator precedence
//
Queue<BinaryExpressionOperator> operatorPrecedence = new Queue<BinaryExpressionOperator>();
operatorPrecedence.Enqueue(BinaryExpressionOperator.Equal);
operatorPrecedence.Enqueue(BinaryExpressionOperator.NotEqual);
operatorPrecedence.Enqueue(BinaryExpressionOperator.Contains);
operatorPrecedence.Enqueue(BinaryExpressionOperator.Matches);
operatorPrecedence.Enqueue(BinaryExpressionOperator.And);
operatorPrecedence.Enqueue(BinaryExpressionOperator.Or);
//
// Loop through the nodes and merge them by operator precedence
//
BinaryExpressionOperator currentOperator = operatorPrecedence.Dequeue();
while (nodes.Count > 1)
{
for (int nodeIndex = 1; nodeIndex < nodes.Count - 1; nodeIndex++)
{
OperatorExpressionPlaceholder operatorExpressionPlaceHolder =
nodes[nodeIndex] as OperatorExpressionPlaceholder;
if (operatorExpressionPlaceHolder != null &&
operatorExpressionPlaceHolder.Operator == currentOperator)
{
IConditionExpression left = nodes[nodeIndex - 1];
IConditionExpression right = nodes[nodeIndex + 1];
if ((operatorExpressionPlaceHolder.Operator == BinaryExpressionOperator.Equal ||
operatorExpressionPlaceHolder.Operator == BinaryExpressionOperator.Contains) &&
!(left is LeafExpression && right is LeafExpression))
{
OnInvalidExpression(originalExpression);
}
BinaryOperatorExpression operatorExpression = new BinaryOperatorExpression(
operatorExpressionPlaceHolder.Operator, left, right);
nodes[nodeIndex] = operatorExpression;
nodes.Remove(left);
nodes.Remove(right);
//
// Restart processing of this level
//
nodeIndex = 0;
}
}
if (operatorPrecedence.Count > 0)
{
currentOperator = operatorPrecedence.Dequeue();
}
else
{
break;
}
}
//
// At the end of everything, we should have a single binary or unary
// condition expression. Anything else is invalid and a format exception
// will be thrown.
//
if (nodes.Count == 1)
{
conditionExpression = nodes[0] as BinaryOperatorExpression;
if (conditionExpression == null)
{
conditionExpression = nodes[0] as UnaryOperatorExpression;
}
}
if (conditionExpression == null)
{
OnInvalidExpression(originalExpression);
}
return conditionExpression;
}
public void EvaluateInvalidOperatorTest()
{
IConditionExpression expression = new BinaryOperatorExpression(
(BinaryExpressionOperator) int.MinValue,
new ElementAttributeExpression(ElementAttributeType.Name),
new StringExpression("Test"));
FieldElement element = new FieldElement();
element.Name = "Test";
bool result = ConditionExpressionEvaluator.Instance.Evaluate(
expression, element);
}
public void EvaluateFilePathContainsTest()
{
string testFile1 = Path.GetTempFileName();
string testFile2 = Path.GetTempFileName();
try
{
IConditionExpression expression = new BinaryOperatorExpression(
BinaryExpressionOperator.Contains,
new FileAttributeExpression(FileAttributeType.Path),
new StringExpression(Path.Combine(Path.GetTempPath(), Path.GetFileNameWithoutExtension(testFile1))));
FileInfo file = new FileInfo(testFile1);
bool result = ConditionExpressionEvaluator.Instance.Evaluate(
expression, file);
Assert.IsTrue(result, "Unexpected expression evaluation result.");
file = new FileInfo(testFile2);
result = ConditionExpressionEvaluator.Instance.Evaluate(
expression, file);
Assert.IsFalse(result, "Unexpected expression evaluation result.");
}
finally
{
try
{
File.Delete(testFile1);
File.Delete(testFile2);
}
catch
{
}
}
}
public void EvaluateFileNullTest()
{
IConditionExpression expression = new BinaryOperatorExpression(
BinaryExpressionOperator.Equal,
new FileAttributeExpression(FileAttributeType.Name),
new StringExpression("Test"));
bool result = ConditionExpressionEvaluator.Instance.Evaluate(
expression, null as FileInfo);
}
public void EvaluateFileNameContainsTest()
{
IConditionExpression expression = new BinaryOperatorExpression(
BinaryExpressionOperator.Contains,
new FileAttributeExpression(FileAttributeType.Name),
new StringExpression("Test"));
FileInfo file = new FileInfo("Test");
bool result = ConditionExpressionEvaluator.Instance.Evaluate(
expression, file);
Assert.IsTrue(result, "Unexpected expression evaluation result.");
file = new FileInfo("Blah");
result = ConditionExpressionEvaluator.Instance.Evaluate(
expression, file);
Assert.IsFalse(result, "Unexpected expression evaluation result.");
}
public void EvaluateFileAttributesContainsTest()
{
string testFile = Path.GetTempFileName();
try
{
IConditionExpression expression = new BinaryOperatorExpression(
BinaryExpressionOperator.Contains,
new FileAttributeExpression(FileAttributeType.Attributes),
new StringExpression("ReadOnly"));
FileInfo file = new FileInfo(testFile);
file.Attributes = FileAttributes.ReadOnly | FileAttributes.Hidden;
bool result = ConditionExpressionEvaluator.Instance.Evaluate(
expression, file);
Assert.IsTrue(result, "Unexpected expression evaluation result.");
file.Attributes = FileAttributes.Normal;
file = new FileInfo(testFile);
result = ConditionExpressionEvaluator.Instance.Evaluate(
expression, file);
Assert.IsFalse(result, "Unexpected expression evaluation result.");
}
finally
{
try
{
File.Delete(testFile);
}
catch
{
}
}
}
public void EvaluateElementParentAttributesContainsTest()
{
IConditionExpression expression = new BinaryOperatorExpression(
BinaryExpressionOperator.Contains,
new ElementAttributeExpression(ElementAttributeType.Attributes, ElementAttributeScope.Parent),
new StringExpression("Attribute2"));
FieldElement element = new FieldElement();
element.Name = "Test";
TypeElement typeElement = new TypeElement();
typeElement.Type = TypeElementType.Structure;
typeElement.Name = "TestType";
typeElement.AddChild(element);
typeElement.AddAttribute(new AttributeElement("Attribute1"));
typeElement.AddAttribute(new AttributeElement("Attribute24"));
bool result = ConditionExpressionEvaluator.Instance.Evaluate(
expression, element);
Assert.IsTrue(result, "Unexpected expression evaluation result.");
typeElement.ClearAttributes();
result = ConditionExpressionEvaluator.Instance.Evaluate(
expression, element);
Assert.IsFalse(result, "Unexpected expression evaluation result.");
}
public void EvaluateElementNullTest()
{
IConditionExpression expression = new BinaryOperatorExpression(
BinaryExpressionOperator.Equal,
new ElementAttributeExpression(ElementAttributeType.Name),
new StringExpression("Test"));
bool result = ConditionExpressionEvaluator.Instance.Evaluate(
expression, null as ICodeElement);
}
public void EvaluateElementNameMatchesTest()
{
IConditionExpression expression = new BinaryOperatorExpression(
BinaryExpressionOperator.Matches,
new ElementAttributeExpression(ElementAttributeType.Name),
new StringExpression("IDisposable\\..*"));
MethodElement element = new MethodElement();
element.Name = "IDisposable.Dispose";
bool result = ConditionExpressionEvaluator.Instance.Evaluate(
expression, element);
Assert.IsTrue(result, "Unexpected expression evaluation result.");
element.Name = "IDisposable.Test";
result = ConditionExpressionEvaluator.Instance.Evaluate(
expression, element);
Assert.IsTrue(result, "Unexpected expression evaluation result.");
element.Name = "IDisposable";
result = ConditionExpressionEvaluator.Instance.Evaluate(
expression, element);
Assert.IsFalse(result, "Unexpected expression evaluation result.");
}
/// <summary>
/// Takes in a list of expressions and operator expression placeholders and
/// builds an expression tree node.
/// </summary>
/// <param name="originalNodes">Original nodes.</param>
/// <param name="originalExpression">Original expression.</param>
/// <returns>A condition expression.</returns>
private static IConditionExpression AssembleExpressionTree(
ReadOnlyCollection <IConditionExpression> originalNodes, string originalExpression)
{
IConditionExpression conditionExpression = null;
List <IConditionExpression> nodes = new List <IConditionExpression>(originalNodes);
//
// Build a queue that represents the binary operator precedence
//
Queue <BinaryExpressionOperator> operatorPrecedence = new Queue <BinaryExpressionOperator>();
operatorPrecedence.Enqueue(BinaryExpressionOperator.Equal);
operatorPrecedence.Enqueue(BinaryExpressionOperator.NotEqual);
operatorPrecedence.Enqueue(BinaryExpressionOperator.Contains);
operatorPrecedence.Enqueue(BinaryExpressionOperator.Matches);
operatorPrecedence.Enqueue(BinaryExpressionOperator.And);
operatorPrecedence.Enqueue(BinaryExpressionOperator.Or);
//
// Loop through the nodes and merge them by operator precedence
//
BinaryExpressionOperator currentOperator = operatorPrecedence.Dequeue();
while (nodes.Count > 1)
{
for (int nodeIndex = 1; nodeIndex < nodes.Count - 1; nodeIndex++)
{
OperatorExpressionPlaceholder operatorExpressionPlaceHolder =
nodes[nodeIndex] as OperatorExpressionPlaceholder;
if (operatorExpressionPlaceHolder != null &&
operatorExpressionPlaceHolder.Operator == currentOperator)
{
IConditionExpression left = nodes[nodeIndex - 1];
IConditionExpression right = nodes[nodeIndex + 1];
if ((operatorExpressionPlaceHolder.Operator == BinaryExpressionOperator.Equal ||
operatorExpressionPlaceHolder.Operator == BinaryExpressionOperator.Contains) &&
!(left is LeafExpression && right is LeafExpression))
{
OnInvalidExpression(originalExpression);
}
BinaryOperatorExpression operatorExpression = new BinaryOperatorExpression(
operatorExpressionPlaceHolder.Operator, left, right);
nodes[nodeIndex] = operatorExpression;
nodes.Remove(left);
nodes.Remove(right);
//
// Restart processing of this level
//
nodeIndex = 0;
}
}
if (operatorPrecedence.Count > 0)
{
currentOperator = operatorPrecedence.Dequeue();
}
else
{
break;
}
}
//
// At the end of everything, we should have a single binary or unary
// condition expression. Anything else is invalid and a format exception
// will be thrown.
//
if (nodes.Count == 1)
{
conditionExpression = nodes[0] as BinaryOperatorExpression;
if (conditionExpression == null)
{
conditionExpression = nodes[0] as UnaryOperatorExpression;
}
}
if (conditionExpression == null)
{
OnInvalidExpression(originalExpression);
}
return(conditionExpression);
}
