public void ReturnFragmentType_NonAnnotatedMethod_ReturnsEmptyFragment()
{
Method sample = TestHelper.GetSample <FragmentUtilitySample> ("NoReturnFragment");
var returnFragment = FragmentUtility.ReturnFragmentType(sample);
Assert.That(returnFragment, Is.EqualTo(Fragment.CreateEmpty()));
}
private bool AnalysisRequired(IMethodGraph methodGraph)
{
return(methodGraph.Blocks.Any(
block =>
block.PreConditions.Any(
preCondition => preCondition.Fragment != Fragment.CreateEmpty() && preCondition.Fragment != Fragment.CreateLiteral())));
}
public static Fragment GetFragmentType(AttributeNodeCollection attributes)
{
var fragmentType = Fragment.CreateEmpty();
if (attributes != null && ContainsFragment(attributes))
{
string fragmentFullName = typeof(FragmentAttribute).FullName;
foreach (AttributeNode attributeNode in attributes)
{
if (IsFragment(attributeNode))
{
if (attributeNode.Type.FullName == fragmentFullName)
{
foreach (Literal literal in attributeNode.Expressions)
{
string value = literal.Value as string;
if (value != null)
{
fragmentType = Fragment.CreateNamed(value);
}
}
}
else
{
fragmentType = Fragment.CreateNamed(attributeNode.Type.Name.Name.Replace("Attribute", ""));
}
}
}
}
return(fragmentType);
}
public void SetUp()
{
_problemMetadata = new ProblemMetadata(0, new SourceContext(), Fragment.CreateEmpty(), Fragment.CreateEmpty());
MockRepository mocks = new MockRepository();
_blacklistManager = mocks.Stub <IBlacklistManager>();
}
public void GetFragmentType_ContainsNonFragmentParameter_ThrowsException()
{
TypeNode stringTypeNode = IntrospectionUtility.TypeNodeFactory <string>();
Method sample = TestHelper.GetSample <FragmentUtilitySample>("ContainsNonFragmentParameter", stringTypeNode);
var returnedFragment = FragmentUtility.GetFragmentType(sample.Parameters[0].Attributes);
Assert.That(returnedFragment, Is.EqualTo(Fragment.CreateEmpty()));
}
public void IsViolated_EmptyExpectedSymbolUnknown_ReturnsFalse()
{
var expectedFragment = Fragment.CreateEmpty();
IPreCondition preCondition = new CustomInferencePreCondition(c_symbol, expectedFragment, _problemMetadata);
var context = new SymbolTable(_blacklistManager);
Assert.That(preCondition.IsViolated(context), Is.False);
}
public static bool FragmentTypesAssignable(Fragment givenFragmentType, Fragment targetFragmentType)
{
ArgumentUtility.CheckNotNull("givenFragmentType", givenFragmentType);
ArgumentUtility.CheckNotNull("targetFragmentType", targetFragmentType);
return(targetFragmentType == givenFragmentType ||
targetFragmentType == Fragment.CreateEmpty() ||
givenFragmentType == Fragment.CreateLiteral());
}
public void InferFragmentType_AssignmentWithNonFragmentField_ReturnsEmptyFragmentType()
{
Method sample = TestHelper.GetSample <InferFragmentSample>("AssignmentWithNonFragmentField");
Block assignmentBlock = (Block)sample.Body.Statements[0];
AssignmentStatement assignment = (AssignmentStatement)assignmentBlock.Statements[1];
Expression sampleExpression = assignment.Source;
var fragmentType = _symbolTable.InferFragmentType(sampleExpression);
Assert.That(fragmentType, Is.EqualTo(Fragment.CreateEmpty()));
}
public void Parse_ValidReturnWithParameterAssignmentInsideIf_ReturnsCorrectPostCondition()
{
TypeNode stringTypeNode = IntrospectionUtility.TypeNodeFactory <string>();
Method sampleMethod = TestHelper.GetSample <BlockParserSample> ("ValidReturnWithParameterAssignmentInsideIf", stringTypeNode);
Block ifBlock = sampleMethod.Body.Statements[1] as Block;
BasicBlock ifBasicBlock = _blockParser.Parse(ifBlock);
var postConditionFragmentType = ifBasicBlock.PostConditionSymbolTable.GetFragmentType("local$0");
Assert.That(postConditionFragmentType, Is.EqualTo(Fragment.CreateEmpty()));
}
public void InferFragmentType_UnsupportetCall_ReturnsFragment()
{
Method sampleMethod = IntrospectionUtility.MethodFactory <CustomInferenceControllerSample> ("UnsupportetCall");
Block sampleBlock = (Block)sampleMethod.Body.Statements[0];
ExpressionStatement sampleExpression = (ExpressionStatement)sampleBlock.Statements[1];
MethodCall sampleMethodCall = (MethodCall)sampleExpression.Expression;
Fragment returnedFragment = _customInferenceController.InferFragmentType(sampleMethodCall, _symbolTable);
Assert.That(returnedFragment, Is.EqualTo(Fragment.CreateEmpty()));
}
public Fragment InferFragmentType(MethodCall methodCall, ISymbolTable context)
{
Fragment returnFragment = Fragment.CreateEmpty();
Method calleeMethod = IntrospectionUtility.ExtractMethod(methodCall);
if (_coveredMethods.Contains(calleeMethod.FullName))
{
returnFragment = ParameterFragmentUtility.ParameterFragmentIntersection(methodCall, context);
}
return(returnFragment);
}
public static Fragment GetMemberBindingFragmentType(MemberBinding memberBinding)
{
var fragmentType = Fragment.CreateEmpty();
if (memberBinding.BoundMember is Field)
{
Field field = (Field)memberBinding.BoundMember;
fragmentType = FragmentUtility.GetFragmentType(field.Attributes);
}
return(fragmentType);
}
public Fragment InferFragmentType(MethodCall methodCall, ISymbolTable context)
{
Fragment fragmentType = Fragment.CreateEmpty();
Method calleeMethod = IntrospectionUtility.ExtractMethod(methodCall);
ICustomInference matchingRule = MatchingInferRule(calleeMethod);
if (matchingRule != null)
{
fragmentType = matchingRule.InferFragmentType(methodCall, context);
}
return(fragmentType);
}
private Fragment FirstOperandsFragmentType(AssignmentStatement assignment, HandleContext context)
{
Fragment fragmentType = Fragment.CreateEmpty();
Expression firstOperand = FirstOperand(assignment.Source);
if (firstOperand != null)
{
ISymbolTable symbolTable = context.SymbolTable;
fragmentType = symbolTable.InferFragmentType(firstOperand);
}
return(fragmentType);
}
public void IsViolated_NamedExpectedEmptyGiven_ReturnsTrue()
{
var expectedFragment = Fragment.CreateNamed(c_expectedType);
var givenFragment = Fragment.CreateEmpty();
IPreCondition preCondition = new CustomInferencePreCondition(c_symbol, expectedFragment, _problemMetadata);
var context = new SymbolTable(_blacklistManager);
context.MakeSafe(c_symbol, givenFragment);
Assert.That(preCondition.IsViolated(context), Is.True);
}
private Fragment GetDelegateTypesReturnFragment(DelegateNode sourceDelegateType)
{
var returnFragment = Fragment.CreateEmpty();
foreach (Member member in sourceDelegateType.Members)
{
if (member.Name.Name == "Invoke")
{
Method invoke = (Method)member;
returnFragment = FragmentUtility.ReturnFragmentType(invoke);
}
}
return(returnFragment);
}
public Fragment InferFragmentType(MethodCall methodCall, ISymbolTable context)
{
Fragment returnFragment = Fragment.CreateEmpty();
Method method = IntrospectionUtility.ExtractMethod(methodCall);
if (Infers(method) && methodCall.Callee is MemberBinding)
{
MemberBinding memberBinding = (MemberBinding)methodCall.Callee;
string variableName;
if (IntrospectionUtility.IsVariable(memberBinding.TargetObject, out variableName))
{
returnFragment = context.GetFragmentType(variableName);
}
}
return(returnFragment);
}
public static Fragment InferReturnFragmentType(Method method)
{
Fragment fragmentType;
AttributeNodeCollection definingAttributes = GetDefiningAttributes(method);
if (definingAttributes != null)
{
fragmentType = FragmentUtility.GetFragmentType(definingAttributes);
}
else
{
fragmentType = Fragment.CreateEmpty();
}
return(fragmentType);
}
public void HandleViolation_ViolationProvoked_SetsSymbolUnsafe()
{
var expectedFragment = Fragment.CreateNamed(c_expectedType);
var givenFragment = Fragment.CreateNamed("unexpected");
IPreCondition preCondition = new CustomInferencePreCondition(c_symbol, expectedFragment, _problemMetadata);
var context = new SymbolTable(_blacklistManager);
context.MakeSafe(c_symbol, givenFragment);
IProblemPipe problemPipe = MockRepository.GenerateMock <IProblemPipe>();
preCondition.HandleViolation(context, problemPipe);
bool symbolSetUnafe = context.GetFragmentType(c_symbol) == Fragment.CreateEmpty();
Assert.That(symbolSetUnafe, Is.True);
}
protected void MatchFragments(Method baseMethod, Method overridingMethod)
{
foreach (var parameter in baseMethod.Parameters)
{
var fragmentType = FragmentUtility.GetFragmentType(parameter.Attributes);
if (fragmentType != Fragment.CreateEmpty())
{
var overriddenParameter = overridingMethod.Parameters[parameter.ParameterListIndex];
var overriddenFragmentType = FragmentUtility.GetFragmentType(overriddenParameter.Attributes);
if (overriddenFragmentType != fragmentType && overriddenFragmentType != Fragment.CreateEmpty())
{
AddProblem(new ProblemMetadata(overridingMethod.UniqueKey, overridingMethod.SourceContext, fragmentType, overriddenFragmentType));
}
}
}
}
public void Analyze(MethodCall methodCall, ISymbolTable context, List <IPreCondition> preConditions)
{
Method method = IntrospectionUtility.ExtractMethod(methodCall);
if (Analyzes(method) && methodCall.Callee is MemberBinding)
{
MemberBinding memberBinding = (MemberBinding)methodCall.Callee;
if (IsFragmentParameterInferenceMethod(method))
{
string variableName;
if (IntrospectionUtility.IsVariable(memberBinding.TargetObject, out variableName))
{
Fragment parameterFragment = ParameterFragmentUtility.ParameterFragmentIntersection(methodCall, context);
Fragment targetObjectFragment = context.GetFragmentType(variableName);
if (targetObjectFragment == Fragment.CreateLiteral() || targetObjectFragment.Undefined)
{
context.MakeSafe(variableName, parameterFragment);
}
else
{
if (targetObjectFragment == Fragment.CreateEmpty() && parameterFragment != Fragment.CreateLiteral()) // && parameterFragment != Fragment.CreateEmpty()
{
ProblemMetadata problemMetadata = new ProblemMetadata(methodCall.UniqueKey, methodCall.SourceContext, parameterFragment, targetObjectFragment);
IPreCondition precondition = new CustomInferencePreCondition(variableName, parameterFragment, problemMetadata);
preConditions.Add(precondition);
}
else if (!FragmentUtility.FragmentTypesAssignable(parameterFragment, targetObjectFragment))
{
context.MakeUnsafe(variableName);
}
}
}
}
else if (!IsSafeMethod(method))
{
string variableName;
if (IntrospectionUtility.IsVariable(memberBinding.TargetObject, out variableName))
{
context.MakeUnsafe(variableName);
}
}
}
}
public void MethodGraph_ValidReturnWithIf_ReturnsCorrectPostConditions()
{
TypeNode stringTypeNode = IntrospectionUtility.TypeNodeFactory <string>();
Method sampleMethod = TestHelper.GetSample <MethodGraph_ClassSample> ("ValidReturnWithIf", stringTypeNode);
Block preReturnBlock = sampleMethod.Body.Statements[2] as Block;
if (preReturnBlock != null)
{
IMethodGraph methodGraph = BuildMethodGraph(sampleMethod);
BasicBlock preReturnBasicBlock = methodGraph.GetBasicBlockById(preReturnBlock.UniqueKey);
var postConditionFragmentType = preReturnBasicBlock.PostConditionSymbolTable.GetFragmentType("local$1");
Assert.That(postConditionFragmentType, Is.EqualTo(Fragment.CreateEmpty()));
}
else
{
Assert.Ignore("Bad Sample");
}
}
private void AddAssignmentPreCondition(AssignmentStatement assignmentStatement, HandleContext context)
{
Field targetField = IntrospectionUtility.GetField(assignmentStatement.Target);
Fragment targetFragmentType = FragmentUtility.GetFragmentType(targetField.Attributes);
if (targetFragmentType != Fragment.CreateEmpty())
{
ProblemMetadata problemMetadata = new ProblemMetadata(
assignmentStatement.UniqueKey,
assignmentStatement.SourceContext,
targetFragmentType,
Fragment.CreateNamed("??"));
string sourceSymbol = IntrospectionUtility.GetVariableName(assignmentStatement.Source);
if (sourceSymbol != null)
{
AssignabilityPreCondition preCondition = new AssignabilityPreCondition(sourceSymbol, targetFragmentType, problemMetadata);
context.PreConditions.Add(preCondition);
}
}
}
public static Fragment ReturnFragmentType(Method method)
{
ArgumentUtility.CheckNotNull("method", method);
var returnFragment = Fragment.CreateEmpty();
Method determiningMethod;
Method[] interfaceDeclarations = IntrospectionUtility.InterfaceDeclarations(method);
if (interfaceDeclarations.Any())
{
determiningMethod = interfaceDeclarations.First();
}
else
{
determiningMethod = method;
}
if (determiningMethod.ReturnAttributes != null && ContainsFragment(determiningMethod.ReturnAttributes))
{
returnFragment = GetFragmentType(determiningMethod.ReturnAttributes);
}
return(returnFragment);
}
private static Fragment FragmentIntersection(Fragment fragmentA, Fragment fragmentB)
{
bool fragmentAIsSuperior = fragmentA != fragmentB && fragmentA == Fragment.CreateLiteral();
bool fragmentBIsSuperior = fragmentA != fragmentB && fragmentB == Fragment.CreateLiteral();
if (fragmentA == fragmentB)
{
return(fragmentA);
}
else if (fragmentAIsSuperior)
{
return(fragmentB);
}
else if (fragmentBIsSuperior)
{
return(fragmentA);
}
else
{
return(Fragment.CreateEmpty());
}
}
public void GetResult_ParameterizedMethodSymbolTableBuiltWithOverlappingEnvironment_FragmentFieldIsEmptyFragment()
{
Method sampleMethod = TestHelper.GetSample <SymbolTableBuilderSample>("ParameterizedMethod", _floatType, _objectType);
EmbeddedInitialSymbolTableBuilder embeddedInitialSymbolTableBuilder = new EmbeddedInitialSymbolTableBuilder(sampleMethod, _blacklistManager, _environment);
_environment.MakeSafe("_fragmentField", Fragment.CreateNamed("ThisShouldBeIgnored"));
ISymbolTable resultSymbolTable = embeddedInitialSymbolTableBuilder.GetResult();
Assert.That(resultSymbolTable.GetFragmentType("_fragmentField"), Is.EqualTo(Fragment.CreateEmpty()));
}
public void GetResult_ParameterizedMethodSymbolTableBuiltWithEmptyEnvironment_NonFragmentFieldIsEmptyFragment()
{
Method sampleMethod = TestHelper.GetSample <SymbolTableBuilderSample>("ParameterizedMethod", _floatType, _objectType);
EmbeddedInitialSymbolTableBuilder embeddedInitialSymbolTableBuilder = new EmbeddedInitialSymbolTableBuilder(sampleMethod, _blacklistManager, _environment);
ISymbolTable resultSymbolTable = embeddedInitialSymbolTableBuilder.GetResult();
Assert.That(resultSymbolTable.GetFragmentType("_nonFragmentField"), Is.EqualTo(Fragment.CreateEmpty()));
}
public void UndefinedFragmentBehavesLikeEmptyFragment()
{
Assert.That(Fragment.CreateUndefined() == Fragment.CreateEmpty(), Is.True);
}
public void GetResult_ParameterizedMethodSymbolTable_NonFragmentParameterIsEmptyFragment()
{
Method sampleMethod = TestHelper.GetSample <SymbolTableBuilderSample>("ParameterizedMethod", _floatType, _objectType);
InitialSymbolTableBuilder initialSymbolTableBuilder = new InitialSymbolTableBuilder(sampleMethod, _blacklistManager);
ISymbolTable resultSymbolTable = initialSymbolTableBuilder.GetResult();
Assert.That(resultSymbolTable.GetFragmentType("nonFragmentParameter"), Is.EqualTo(Fragment.CreateEmpty()));
}
public void HandleStatement_InitializationWithEmptyFragment_VariableFragmentTypeIsEmptyFragment()
{
Method sampleMethod = IntrospectionUtility.MethodFactory <StringBuilderConstructStatementHandlerSample> ("InitializationWithEmptyFragment");
Block sampleBlock = (Block)sampleMethod.Body.Statements[0];
Statement sample = sampleBlock.Statements[1];
HandleContext context = new HandleContext(
sample,
_symbolTable,
new List <IPreCondition>(),
new List <string>(),
new List <BlockAssignment>(),
new List <int>(),
new Dictionary <string, bool>(),
_stringBuilderFragmentTypesDefined);
_handler.Handle(context);
bool symbolTableEntryCorrect = _symbolTable.GetFragmentType("local$0") == Fragment.CreateEmpty();
Assert.That(symbolTableEntryCorrect, Is.True);
}