public override void VisitInvocationExpression(InvocationExpressionSyntax node)
{
FunctionDepth++;
// Need to grab the symbol, and evaluate the function
var methodDeclNode = CacheAnalysisUtil.GetMethodDeclarationNode(node, _context);
methodDeclNode?.Accept(this);
base.VisitInvocationExpression(node);
FunctionDepth--;
}
public override void VisitParenthesizedLambdaExpression(ParenthesizedLambdaExpressionSyntax node)
{
FunctionDepth++;
if (node.Body.IsKind(SyntaxKind.IdentifierName))
{
var identifier = (IdentifierNameSyntax)node.Body;
foreach (var assignmentNode in CacheAnalysisUtil.GetNullAssignmentNodes(identifier, _context))
{
PossibleNullValues.Add(assignmentNode);
}
}
base.VisitParenthesizedLambdaExpression(node);
FunctionDepth--;
}
public override void VisitIdentifierName(IdentifierNameSyntax node)
{
// Is this a method invocation expression (anonymous delegate)?
var methodDeclNode = CacheAnalysisUtil.GetMethodDeclarationNode(node, _context);
if (methodDeclNode != null)
{
_nullValueWalker.Visit(methodDeclNode);
}
// For visiting a non-literal variable
// perform data-flow analysis
var possibleNullAssignments = CacheAnalysisUtil.GetNullAssignmentNodes(node, _context);
foreach (var assignment in possibleNullAssignments)
{
_hasPossibleNullValue = true;
_possibleNullValues.Add(assignment);
}
base.VisitIdentifierName(node);
}
