public async Task GetChildrenReturnsMoreElementWhenMoreThanRangeSizeRequestedAsync()
{
remoteValue.AddChild(RemoteValueFakeUtil.CreateSimpleString("child5", "value5"));
int _countPerRange = 2;
var childAdapter = new RemoteValueChildAdapter.Factory().CreateForTesting(
remoteValue, RemoteValueFormat.Default, varInfoBuilder, noFormatSpecifier,
_countPerRange);
IList <IVariableInformation> children = await childAdapter.GetChildrenAsync(0, 5);
Assert.That(children.Count, Is.EqualTo(3));
Assert.That(children[2].DisplayName, Is.EqualTo("[More]"));
IVariableInformation more = children[2];
CollectionAssert.AreEqual(new[] { "child3", "child4", "[More]" },
await GetAllChildNamesAsync(more.GetChildAdapter()));
IVariableInformation nextMore =
(await more.GetChildAdapter().GetChildrenAsync(2, 1))[0];
CollectionAssert.AreEqual(new[] { "child5" },
await GetAllChildNamesAsync(nextMore.GetChildAdapter()));
}
public void TestEnumChildren()
{
var children = new List <IVariableInformation>()
{
Substitute.For <IVariableInformation>(),
Substitute.For <IVariableInformation>(),
Substitute.For <IVariableInformation>()
};
mockVarInfo.MightHaveChildren().Returns(true);
mockVarInfo.GetChildAdapter().Returns(new ListChildAdapter.Factory().Create(children));
mockVarInfo.GetCachedView().Returns(mockVarInfo);
var property = createPropertyDelegate.Invoke(mockVarInfo);
IEnumDebugPropertyInfo2 propertyEnum;
var guid = new System.Guid();
var result = property.EnumChildren(enum_DEBUGPROP_INFO_FLAGS.DEBUGPROP_INFO_NAME, 10,
ref guid,
enum_DBG_ATTRIB_FLAGS.DBG_ATTRIB_ACCESS_ALL, "", 0,
out propertyEnum);
Assert.That(result, Is.EqualTo(VSConstants.S_OK));
uint count;
propertyEnum.GetCount(out count);
Assert.That(count, Is.EqualTo(children.Count));
}
async Task InitAsync()
{
if (_initialized)
{
return;
}
_initialized = true;
if (string.IsNullOrWhiteSpace(_smartPointerItem?.Value) ||
!NatvisViewsUtil.IsViewVisible(_variable.FormatSpecifier,
_smartPointerItem.IncludeView,
_smartPointerItem.ExcludeView))
{
_adapter = _fallbackAdapter;
return;
}
try
{
IVariableInformation expandInfo = await _evaluator.EvaluateExpressionAsync(
_smartPointerItem.Value, _variable, _natvisScope, null);
_adapter = expandInfo.GetChildAdapter();
}
catch (ExpressionEvaluationFailed ex)
{
NatvisErrorUtils.LogExpandChildrenValidationError(
NatvisLoggingLevel.WARNING, _logger, "<SmartPointer>", _variable.TypeName,
ex.Message);
_adapter = _fallbackAdapter;
}
}
public static async Task <IVariableInformation[]> GetAllChildrenAsync(
this IVariableInformation varInfo)
{
IChildAdapter childAdapter = varInfo.GetChildAdapter();
return((await childAdapter.GetChildrenAsync(0, await childAdapter.CountChildrenAsync()))
.ToArray());
}
static async Task <IVariableInformation> GetChildAsync(
IVariableInformation varInfo, int index)
{
var children = (await varInfo.GetChildAdapter().GetChildrenAsync(index, 1));
return(children.FirstOrDefault() ??
new ErrorVariableInformation(varInfo.DisplayName,
"<out-of-bounds child index in 'expand()' format specifier>"));
}
async Task InitChildAdapterAsync()
{
if (_childAdapter == null)
{
IVariableInformation expandInfo = await _evaluator.EvaluateExpressionAsync(
_expandedItem.Value, _variable, _natvisScope, null);
_childAdapter = expandInfo.GetChildAdapter();
}
}
IChildAdapter CreateNatvisChildAdapter(VisualizerInfo visualizer,
IVariableInformation variable)
{
ExpandType expandType = visualizer.GetExpandType();
if (expandType != null)
{
return(_natvisCollectionFactory.Create(variable, expandType,
visualizer.NatvisScope));
}
SmartPointerType smartPointerType = visualizer.GetSmartPointerType();
if (smartPointerType != null)
{
return(_smartPointerFactory.Create(
variable, smartPointerType, visualizer.NatvisScope, variable.GetChildAdapter()));
}
return(variable.GetChildAdapter());
}
public int GetChildPropertyProvider(uint dwFields, uint dwRadix, uint dwTimeout,
out IAsyncDebugPropertyInfoProvider
ppPropertiesProvider)
{
ppPropertiesProvider = _taskExecutor.Run(() =>
{
IVariableInformation cachedVarInfo = _varInfo.GetCachedView();
IChildrenProvider childrenProvider =
_childrenProviderFactory.Create(cachedVarInfo.GetChildAdapter(),
(enum_DEBUGPROP_INFO_FLAGS)dwFields, dwRadix);
return(new AsyncDebugPropertyInfoProvider(childrenProvider, _taskExecutor));
});
return(VSConstants.S_OK);
}
public int EnumChildrenImpl(enum_DEBUGPROP_INFO_FLAGS fields, uint radix, Guid guidFilter,
enum_DBG_ATTRIB_FLAGS attributeFilter, string nameFilter,
uint timeout, out IEnumDebugPropertyInfo2 propertyEnum)
{
propertyEnum = _taskExecutor.Run(() =>
{
_varInfo.FallbackValueFormat = GetFallbackValueFormat(radix);
IVariableInformation cachedVarInfo = _varInfo.GetCachedView();
IChildrenProvider childrenProvider =
_childrenProviderFactory.Create(cachedVarInfo.GetChildAdapter(), fields, radix);
return(_varInfoEnumFactory.Create(childrenProvider));
});
return(VSConstants.S_OK);
}
internal IChildAdapter GetChildAdapter(IVariableInformation variable)
{
VisualizerInfo visualizer = VisualizerScanner.FindType(variable);
if (visualizer?.Visualizer.Items == null)
{
return(variable.GetChildAdapter());
}
IChildAdapter childAdapter = CreateNatvisChildAdapter(visualizer, variable);
// Special case for SSE registers. VS calls VariableInformationEnum.Count, even if
// the SSE registers are not visible. Without this, we would have to expand all
// children just to get the count, which slows down the register window a lot.
if (variable.CustomVisualizer == CustomVisualizer.SSE ||
variable.CustomVisualizer == CustomVisualizer.SSE2)
{
return(new SseAdapter(visualizer.GetExpandType().Items.Length, childAdapter));
}
return(childAdapter);
}
public void GetPropertyInfoNone()
{
var unexpectedCall = new Exception("Unexpected call");
mockVarInfo.DisplayName.Throws(unexpectedCall);
mockVarInfo.TypeName.Throws(unexpectedCall);
mockVarInfo.AssignmentValue.Throws(unexpectedCall);
mockVarInfo.ValueAsync().Throws(unexpectedCall);
mockVarInfo.Error.Throws(unexpectedCall);
mockVarInfo.MightHaveChildren().Throws(unexpectedCall);
mockVarInfo.GetChildAdapter().Throws(unexpectedCall);
mockVarInfo.FindChildByName(Arg.Any <string>()).ThrowsForAnyArgs(unexpectedCall);
mockVarInfo.IsReadOnly.Throws(unexpectedCall);
string error;
mockVarInfo.Assign(Arg.Any <string>(), out error).ThrowsForAnyArgs(unexpectedCall);
DEBUG_PROPERTY_INFO propertyInfo;
int result = GetPropertyInfo(enum_DEBUGPROP_INFO_FLAGS.DEBUGPROP_INFO_NONE,
out propertyInfo);
// Also verifies exceptions are not raised.
Assert.That(result, Is.EqualTo(VSConstants.S_OK));
Assert.That(propertyInfo.dwFields,
Is.EqualTo(enum_DEBUGPROP_INFO_FLAGS.DEBUGPROP_INFO_NONE));
}
static async Task <string> FormatChildrenListAsync(IVariableInformation varInfo,
int charactersLeft,
string noChildrenMarker = "")
{
IChildAdapter children = varInfo.GetChildAdapter();
if (children is INatvisEntity)
{
return("");
}
int childrenCount = await children.CountChildrenAsync();
const int maxChildren = 3;
StringBuilder sb = new StringBuilder();
sb.Append("{");
for (int i = 0; i < childrenCount; i++)
{
try
{
IVariableInformation currentChild =
(await children.GetChildrenAsync(i, 1)).ElementAt(0).GetCachedView();
// For array elements or pointers, we do not display the child name.
// Also array elements are separated by commas. We detect the array elements
// using a somewhat hacky way - we check if their name is the index in
// square brackets.
bool isArrayElementOrPointee =
currentChild.DisplayName == $"[{i}]" || currentChild.DisplayName == "";
if (i != 0)
{
sb.Append(isArrayElementOrPointee ? ", " : " ");
}
// If we are over the limit, let us just display the dots and exit.
if (!isArrayElementOrPointee && i >= maxChildren)
{
sb.Append("...");
break;
}
string childValue =
await BuildAsync(currentChild, charactersLeft - sb.Length - 1);
if (string.IsNullOrEmpty(childValue) && currentChild.GetChildAdapter()
is INatvisEntity)
{
childValue = "{...}";
}
else if (childValue == "..." || string.IsNullOrEmpty(childValue))
{
sb.Append(childValue);
break;
}
if (!isArrayElementOrPointee)
{
sb.Append($"{currentChild.DisplayName}=");
}
sb.Append(childValue);
}
catch (ArgumentOutOfRangeException)
{
break;
}
}
if (childrenCount == 0)
{
sb.Append(noChildrenMarker);
}
sb.Append("}");
return(sb.ToString());
}