private static void ReportStaticOrNonStaticNotDisposedMember(CustomAnalysisContext context, string variableName)
{
var node = context.Node;
var containingClass = node.FindContainingClass();
if (containingClass == null)
{
return;
}
var fieldDeclarationSyntax = containingClass.FindFieldNamed(variableName);
if (fieldDeclarationSyntax != null)
{
if (fieldDeclarationSyntax.IsStatic())
{
context.ReportNotDisposedStaticField(variableName);
}
else
{
context.ReportNotDisposedField(variableName);
}
}
else
{
var prop = containingClass.FindPropertyNamed(variableName);
if (prop == null)
{
return; //this should never happen
}
if (prop.IsStatic())
{
context.ReportNotDisposedStaticProperty(variableName);
}
else
{
context.ReportNotDisposedProperty(variableName);
}
}
}
private static void AnalyzeNodeInFieldDeclaration(CustomAnalysisContext context,
string fieldName)
{
if (context.Node.IsDisposedInDisposingMethod(fieldName, Configuration, context.SemanticModel))
{
return;
}
var containeringClass = context.Node.FindContainingClass();
var fieldDeclaration = containeringClass?.FindFieldNamed(fieldName);
if (fieldDeclaration == null)
{
return;
}
if (fieldDeclaration.IsStatic())
{
context.ReportNotDisposedStaticField(fieldName);
}
else
{
context.ReportNotDisposedField(fieldName);
}
}
private static void AnalyzeNodeInAssignmentExpression(CustomAnalysisContext context)
{
var node = context.Node;
//is local or global variable
var assignmentExpressionSyntax = node.Parent as AssignmentExpressionSyntax;
var variableName = (assignmentExpressionSyntax?.Left as IdentifierNameSyntax)?.Identifier.Text;
if (node.TryFindContainingMethod(out var containingMethod))
{
if (containingMethod.ContainsDisposeCallFor(variableName, context.SemanticModel, Configuration))
{
return;
}
if (containingMethod.HasDecendentVariableDeclaratorFor(variableName))
{
//local declaration in method
if (containingMethod.Returns(variableName))
{
return;
}
if (node.IsDescendantOfUsingHeader())
{
return;
}
if (node.IsArgumentInObjectCreation())
{
AnalyzeNodeInArgumentList(context);
return;
}
if (containingMethod.HasInterlockedExchangeWith(variableName))
{
return;
}
//is part of tracking call
context.ReportNotDisposedLocalVariable();
return;
}
if (node.IsDisposedInDisposingMethod(variableName, Configuration, context.SemanticModel))
{
return;
}
if (node.IsArgumentInObjectCreation())
{
AnalyzeNodeInArgumentList(context);
return;
}
//assignment to field or property
ReportStaticOrNonStaticNotDisposedMember(context, variableName);
return;
}
if (node.TryFindContainingCtor(out var ctor))
{
if (ctor.HasDecendentVariableDeclaratorFor(variableName))
{
//local variable in ctor
if (ctor.HasInterlockedExchangeWith(variableName))
{
return;
}
if (node.IsDescendantOfUsingHeader())
{
return;
}
if (node.IsArgumentInObjectCreation())
{
AnalyzeNodeInArgumentList(context);
return;
}
if (ctor.ContainsDisposeCallFor(variableName, context.SemanticModel, Configuration))
{
return;
}
context.ReportNotDisposedLocalVariable();
}
else //field or property
{
if (node.IsDisposedInDisposingMethod(variableName, Configuration, context.SemanticModel))
{
return;
}
if (node.IsAssignmentToProperty(variableName, out var isStatic))
{
if (isStatic)
{
context.ReportNotDisposedStaticProperty(variableName);
}
else
{
context.ReportNotDisposedProperty(variableName);
}
}
else
{
if (node.IsAssignmentToStaticField(variableName))
{
context.ReportNotDisposedStaticField(variableName);
}
else
{
context.ReportNotDisposedField(variableName);
}
}
}
}
}