public override CSharpSyntaxNode VisitClassBlock(VbSyntax.ClassBlockSyntax node)
{
return(WithPortedTrivia <VbSyntax.TypeBlockSyntax, CsSyntax.BaseTypeDeclarationSyntax>(node, WithTypeBlockTrivia));
}
// TODO: Drink a lot of coffee and make this generic.
// Problem #1: So many language specific sytax nodes (why o why are they implemented like this).
// Problem #2: Literal strings are different.
// Perhaps there could be a way to swap the VB/C# syntax types about.
// Maybe make a wrapper around each of the diffferent common syntax types. :@
private void VisitMethodsVisualBasic(SyntaxNodeAnalysisContext ctx)
{
VBSyntax.ClassBlockSyntax node = ctx.Node as VBSyntax.ClassBlockSyntax;
if (node == null)
{
return;
}
// Ensures that the analyzed class has a dependency to Controller
if (node
.DescendantNodesAndSelf()
.OfType <VBSyntax.InheritsOrImplementsStatementSyntax>()
.Count(childrenNode => childrenNode.ToString().Contains("Controller"))
.Equals(0))
{
return;
}
IEnumerable <VBSyntax.MethodBlockSyntax> methodsWithParameters = node.DescendantNodesAndSelf()
.OfType <VBSyntax.MethodBlockSyntax>()
.Where(method => !method.SubOrFunctionStatement.ParameterList.Parameters.Count.Equals(0))
.Where(method => method.SubOrFunctionStatement.Modifiers.ToString().Equals("Public"))
.Where(method => method.SubOrFunctionStatement.AsClause?.Type.ToString().Equals("String") ?? false);
foreach (VBSyntax.MethodBlockSyntax method in methodsWithParameters)
{
SyntaxList <VBSyntax.StatementSyntax> methodStatements = method.Statements;
IEnumerable <VBSyntax.InvocationExpressionSyntax> methodInvocations = method.DescendantNodes().OfType <VBSyntax.InvocationExpressionSyntax>();
if (!methodStatements.Count.Equals(0))
{
DataFlowAnalysis flow = ctx.SemanticModel.AnalyzeDataFlow(methodStatements.First(), methodStatements.Last());
// Returns from the Data Flow Analysis of sensible data
// Sensible data is: Data passed as a parameter that is also returned as is by the method
IEnumerable <ISymbol> sensibleVariables = flow.DataFlowsIn.Union(flow.VariablesDeclared.Except(flow.AlwaysAssigned))
.Union(flow.WrittenInside)
.Intersect(flow.WrittenOutside);
if (!sensibleVariables.Count().Equals(0))
{
foreach (ISymbol sensibleVariable in sensibleVariables)
{
bool sensibleVariableIsEncoded = false;
foreach (VBSyntax.InvocationExpressionSyntax methodInvocation in methodInvocations)
{
SeparatedSyntaxList <VBSyntax.ArgumentSyntax> arguments = methodInvocation.ArgumentList.Arguments;
if (!arguments.Count.Equals(0))
{
if (arguments.First().ToString().Contains(sensibleVariable.Name))
{
sensibleVariableIsEncoded = true;
}
}
}
if (!sensibleVariableIsEncoded)
{
ctx.ReportDiagnostic(Diagnostic.Create(Rule, method.GetLocation()));
}
}
}
}
}
}