private static void HandleMethodParameter(SyntaxNodeAnalysisContext context, ParameterSyntax parameter)
{
var paramSympol = context.SemanticModel.GetDeclaredSymbol(parameter, context.CancellationToken);
if (paramSympol != null)
{
var isRefCounter = RefCounter.IsRefCounterType(paramSympol.Type);
if (isRefCounter)
{
var param = context.SemanticModel.GetDeclaredSymbolSafe(parameter, context.CancellationToken);
if (param != null)
{
var method = parameter.FirstAncestorOrSelf <MethodDeclarationSyntax>();
var block = method?.Body;
if (block == null)
{
return;
}
RefCounterStatus status = new RefCounterStatus();
if (method.Identifier.ToString().Equals(KnownSymbol.ReleaseReference))
{
status.AcquireReference("param of ReleaseReference", method.GetLocation());
}
ProcessLocalOrParamenterVar(context, param, block, status);
}
}
}
}
internal static bool IsAssignedAndDisposedInSetupAndTearDown(ISymbol fieldOrProperty, TypeDeclarationSyntax scope, SemanticModel semanticModel, CancellationToken cancellationToken)
{
if (fieldOrProperty == null)
{
return(false);
}
if (AssignmentWalker.SingleForSymbol(fieldOrProperty, scope, Search.TopLevel, semanticModel, cancellationToken, out var assignment) &&
assignment.FirstAncestor <MethodDeclarationSyntax>() is MethodDeclarationSyntax methodDeclaration)
{
if (Attribute.TryGetAttribute(methodDeclaration, KnownSymbol.NUnitSetUpAttribute, semanticModel, cancellationToken, out _))
{
if (fieldOrProperty.ContainingType.TryFirstMethodRecursive(
x => x.GetAttributes().Any(a => a.AttributeClass == KnownSymbol.NUnitTearDownAttribute),
out var tearDown))
{
return(RefCounter.IsMemberDisposed(fieldOrProperty, tearDown, semanticModel, cancellationToken));
}
}
if (Attribute.TryGetAttribute(methodDeclaration, KnownSymbol.NUnitOneTimeSetUpAttribute, semanticModel, cancellationToken, out _))
{
if (fieldOrProperty.ContainingType.TryFirstMethodRecursive(
x => x.GetAttributes().Any(a => a.AttributeClass == KnownSymbol.NUnitOneTimeTearDownAttribute),
out var tearDown))
{
return(RefCounter.IsMemberDisposed(fieldOrProperty, tearDown, semanticModel, cancellationToken));
}
}
}
return(false);
}
public static bool IsRefCounterType(ISymbol symbolInfo)
{
bool isRefCounter = false;
if (symbolInfo is ITypeSymbol typeInfo)
{
if (RefCounter.IsAssignableTo(typeInfo))
{
isRefCounter = true;
}
}
return(isRefCounter);
}
private static void HandleCreation(SyntaxNodeAnalysisContext context, ObjectCreationExpressionSyntax invocation)
{
var semanticModle = context.SemanticModel;
var canel = context.CancellationToken;
var symbolInfo = semanticModle.GetSymbolInfo(invocation.Type, canel);
if (symbolInfo.Symbol is ITypeSymbol typeSymbol)
{
if (RefCounter.IsAssignableTo(typeSymbol))
{
ProcessCreation(invocation, context);
}
}
}
private static void HandleLocalDeclaration(SyntaxNodeAnalysisContext context,
LocalDeclarationStatementSyntax localDeclaration)
{
// 根据声明语句声明的Type(可能是var)，获得SymbolInfo
var isRefCounter = RefCounter.IsRefCounterType(context.SemanticModel, localDeclaration.Declaration.Type);
if (isRefCounter)
{
foreach (var variable in localDeclaration.Declaration.Variables)
{
HandleLocalVariable(context, variable);
}
}
}
private static void HandleInvocation(SyntaxNodeAnalysisContext context, InvocationExpressionSyntax invocation)
{
var semanticModle = context.SemanticModel;
var canel = context.CancellationToken;
var symbolInfo = semanticModle.GetSymbolInfo(invocation.Expression, canel);
if (symbolInfo.Symbol is IMethodSymbol methodSymbol)
{
if (RefCounter.IsAssignableTo(methodSymbol.ReturnType))
{
if (!AssignmentUtils.IsGetMethod(invocation, context.SemanticModel, context.CancellationToken))
{
ProcessCreation(invocation, context);
}
}
}
}