static SearchBoxProperties()
{
_suggestionRequestedEventHandlers = new ConditionalWeakTable<SearchBox, TypedEventHandler<SearchBox, SearchBoxSuggestionsRequestedEventArgs>>();
_resultSuggestionChosenEventHandlers = new ConditionalWeakTable<SearchBox, TypedEventHandler<SearchBox, SearchBoxResultSuggestionChosenEventArgs>>();
_dataContextChangedEventHandlers = new ConditionalWeakTable<SearchBox, TypedEventHandler<FrameworkElement, DataContextChangedEventArgs>>();
_querySubmittedCommandEventHandlers = new ConditionalWeakTable<SearchBox, TypedEventHandler<SearchBox, SearchBoxQuerySubmittedEventArgs>>();
}
/// <inheritdoc/>
public void Clear()
{
lock (objectGuids)
{
objectGuids = new ConditionalWeakTable<object, object>();
}
}
protected async Task<bool> SaveAsync(
Document document,
ConditionalWeakTable<BranchId, ConditionalWeakTable<DocumentId, AbstractSyntaxTreeInfo>> cache,
string persistenceName,
string serializationFormat,
CancellationToken cancellationToken)
{
var workspace = document.Project.Solution.Workspace;
var infoTable = GetInfoTable(document.Project.Solution.BranchId, workspace, cache);
// if it is forked document
if (await document.IsForkedDocumentWithSyntaxChangesAsync(cancellationToken).ConfigureAwait(false))
{
infoTable.Remove(document.Id);
infoTable.GetValue(document.Id, _ => this);
return false;
}
// okay, cache this info if it is from opened document or persistence failed.
var persisted = await SaveAsync(document, persistenceName, serializationFormat, this, cancellationToken).ConfigureAwait(false);
if (!persisted || document.IsOpen())
{
var primaryInfoTable = GetInfoTable(workspace.PrimaryBranchId, workspace, cache);
primaryInfoTable.Remove(document.Id);
primaryInfoTable.GetValue(document.Id, _ => this);
}
return persisted;
}
private static async Task<SyntaxTreeIndex> GetIndexAsync(
Document document,
ConditionalWeakTable<Document, SyntaxTreeIndex> cache,
Func<Document, CancellationToken, Task<SyntaxTreeIndex>> generator,
CancellationToken cancellationToken)
{
if (cache.TryGetValue(document, out var info))
{
return info;
}
info = await generator(document, cancellationToken).ConfigureAwait(false);
if (info != null)
{
return cache.GetValue(document, _ => info);
}
// alright, we don't have cached information, re-calculate them here.
var data = await CreateInfoAsync(document, cancellationToken).ConfigureAwait(false);
// okay, persist this info
await data.SaveAsync(document, cancellationToken).ConfigureAwait(false);
return cache.GetValue(document, _ => data);
}
public Task<XmlNodeSyntax> GetSyntaxTree(ITextSnapshot textSnapshot)
{
var textBuffer = textSnapshot.TextBuffer;
lock (textBuffer)
{
ConditionalWeakTable<ITextSnapshot, Task<XmlNodeSyntax>> textSnapshotToSyntaxRootMap;
Task<XmlNodeSyntax> syntaxRootTask;
if (!textBuffer.Properties.TryGetProperty(typeof(ParserService), out textSnapshotToSyntaxRootMap))
{
textSnapshotToSyntaxRootMap = new ConditionalWeakTable<ITextSnapshot, Task<XmlNodeSyntax>>();
textBuffer.Properties.AddProperty(typeof(ParserService), textSnapshotToSyntaxRootMap);
}
else if (textSnapshotToSyntaxRootMap.TryGetValue(textSnapshot, out syntaxRootTask))
{
return syntaxRootTask;
}
syntaxRootTask = Task.Run(() => Parse(textSnapshot));
textSnapshotToSyntaxRootMap.Add(textSnapshot, syntaxRootTask);
return syntaxRootTask;
}
}
public void GetValue()
{
var cwt = new ConditionalWeakTable<object, object>();
try
{
cwt.GetValue(null, k => null);
Assert.Fail("#0");
}
catch (ArgumentNullException) { }
try
{
cwt.GetValue(20, null);
Assert.Fail("#1");
}
catch (ArgumentNullException) { }
object key = "foo";
object val = cwt.GetValue(key, k => new Link(k));
Assert.IsTrue(val != null, "#2");
Assert.AreEqual(typeof(Link), val.GetType(), "#3");
Assert.AreEqual(val, cwt.GetValue(key, k => new object()), "#4");
}
public static void AddMany_ThenRemoveAll(int numObjects)
{
object[] keys = Enumerable.Range(0, numObjects).Select(_ => new object()).ToArray();
object[] values = Enumerable.Range(0, numObjects).Select(_ => new object()).ToArray();
var cwt = new ConditionalWeakTable<object, object>();
for (int i = 0; i < numObjects; i++)
{
cwt.Add(keys[i], values[i]);
}
for (int i = 0; i < numObjects; i++)
{
Assert.Same(values[i], cwt.GetValue(keys[i], _ => new object()));
}
for (int i = 0; i < numObjects; i++)
{
Assert.True(cwt.Remove(keys[i]));
Assert.False(cwt.Remove(keys[i]));
}
for (int i = 0; i < numObjects; i++)
{
object ignored;
Assert.False(cwt.TryGetValue(keys[i], out ignored));
}
}
internal void OnNewAnalyzer(PythonAnalyzer analyzer) {
if (analyzer == null) {
throw new ArgumentNullException("analyzer");
}
_tags.Clear();
_filters.Clear();
foreach (var entry in _hookedEntries) {
entry.OnNewParseTree -= OnNewParseTree;
}
_hookedEntries.Clear();
_templateAnalysis.Clear();
_templateFiles.Clear();
_contextTable = new ConditionalWeakTable<Node, ContextMarker>();
_decoratorTable = new ConditionalWeakTable<Node, DeferredDecorator>();
foreach (var keyValue in _knownTags) {
_tags[keyValue.Key] = new TagInfo(keyValue.Value, null);
}
foreach (var keyValue in _knownFilters) {
_filters[keyValue.Key] = new TagInfo(keyValue.Value, null);
}
HookAnalysis(analyzer);
_analyzer = analyzer;
}
/// <summary>
/// Executes an action.
/// </summary>
public ObservableCommand(Func<object, bool> canExecuteFunc = null, bool enabled = true)
{
this.enabled = enabled;
this.canExecuteFunc = canExecuteFunc;
this.proxies = new List<WeakReference<ObservableCommandProxy>>();
this.proxyHandlers = new ConditionalWeakTable<ObservableCommandProxy, EventHandler>();
}
public void Should_release_value_when_there_are_no_more_references()
{
var table = new ConditionalWeakTable<TypeWithStrongReferenceThroughTable, TypeWithWeakReference>();
var strong = new TypeWithStrongReferenceThroughTable();
var weak = new TypeWithWeakReference()
{
WeakReference = new WeakReference(strong)
};
table.Add(strong, weak);
GC.Collect();
TypeWithWeakReference result = null;
Assert.That(table.TryGetValue(strong, out result), Is.True);
Assert.That(result, Is.SameAs(weak));
var weakHandleToStrong = new WeakReference(strong);
strong = null;
GC.Collect();
Assert.That(weakHandleToStrong.IsAlive, Is.False);
}
private static void WeakKey()
{
var people = new[]
{
new Person {Id = 1, Name = "Jurian Naul" },
new Person {Id = 2, Name = "Thomas Bent" },
new Person {Id = 3, Name = "Ellen Carson" },
new Person {Id = 4, Name = "Katrina Lauran" },
new Person {Id = 5, Name = "Monica Ausbach" },
};
var locations = new ConditionalWeakTable<Person, string>();
locations.Add(people[0], "Shinon");
locations.Add(people[1], "Lance");
locations.Add(people[2], "Pidona");
locations.Add(people[3], "Loanne");
locations.Add(people[4], "Loanne");
foreach (var p in people)
{
string location;
if (locations.TryGetValue(p, out location))
Console.WriteLine(p.Name + " at " + location);
}
}
/// <summary>Static constructor.</summary>
static QueryFutureManager()
{
#if EF5 || EF6
CacheWeakFutureBatch = new ConditionalWeakTable<ObjectContext, QueryFutureBatch>();
#elif EFCORE
CacheWeakFutureBatch = new ConditionalWeakTable<DbContext, QueryFutureBatch>();
#endif
}
public AnalysisState(ImmutableArray<DiagnosticAnalyzer> analyzers)
{
_gate = new object();
_analyzerStateMap = CreateAnalyzerStateMap(analyzers);
_pendingSourceEvents = new Dictionary<SyntaxTree, HashSet<CompilationEvent>>();
_pendingNonSourceEvents = new HashSet<CompilationEvent>();
_lazyAnalyzerActionCountsMap = null;
_semanticModelsMap = new ConditionalWeakTable<SyntaxTree, SemanticModel>();
_compilationEventsPool = new ObjectPool<HashSet<CompilationEvent>>(() => new HashSet<CompilationEvent>());
}
public AnalyzerManager(ImmutableArray<AnalyzerReference> hostAnalyzerReferences)
{
_hostAnalyzerReferencesMap = hostAnalyzerReferences.IsDefault ? ImmutableDictionary<string, AnalyzerReference>.Empty : CreateAnalyzerReferencesMap(hostAnalyzerReferences);
_hostDiagnosticAnalyzersPerReferenceMap = CreateDiagnosticAnalyzersPerReferenceMap(_hostAnalyzerReferencesMap);
_hostDiagnosticAnalyzersPerLanguageMap = new ConcurrentDictionary<string, ImmutableDictionary<string, ImmutableArray<DiagnosticAnalyzer>>>(concurrencyLevel: 2, capacity: 2);
_descriptorCache = new ConditionalWeakTable<DiagnosticAnalyzer, IReadOnlyList<DiagnosticDescriptor>>();
DiagnosticAnalyzerLogger.LogWorkspaceAnalyzers(hostAnalyzerReferences);
}
private bool TryGetInitialVersions(ConditionalWeakTable<ProjectId, Versions> initialVersionMap, Project project, string keyName, out Versions versions)
{
// if we already loaded this, return it.
if (initialVersionMap.TryGetValue(project.Id, out versions))
{
return true;
}
// otherwise, load it
return TryLoadInitialVersions(initialVersionMap, project, keyName, out versions);
}
public AnalysisState(ImmutableArray<DiagnosticAnalyzer> analyzers)
{
_gate = new SemaphoreSlim(initialCount: 1);
_analyzerStateMap = CreateAnalyzerStateMap(analyzers, out _analyzerStates);
_pendingSourceEvents = new Dictionary<SyntaxTree, HashSet<CompilationEvent>>();
_pendingNonSourceEvents = new HashSet<CompilationEvent>();
_lazyAnalyzerActionCountsMap = null;
_semanticModelsMap = new ConditionalWeakTable<SyntaxTree, SemanticModel>();
_compilationEventsPool = new ObjectPool<HashSet<CompilationEvent>>(() => new HashSet<CompilationEvent>());
_pooledEventsWithAnyActionsSet = new HashSet<CompilationEvent>();
_compilationEndAnalyzed = false;
}
private static void InitializeEnableXamlSourceInfo(string value)
{
// Initialize source info support. Source info is disabled if value
// is empty, 0 or false (case insensitive). Otherwise true.
value = (value ?? string.Empty).Trim().ToLowerInvariant();
if (value == string.Empty || value == "0" || value == "false" || !InitializeXamlObjectEventArgs())
{
s_sourceInfoTable = null;
}
else
{
s_sourceInfoTable = new ConditionalWeakTable<object, XamlSourceInfo>();
}
}
public static void InvalidArgs_Throws()
{
var cwt = new ConditionalWeakTable<object, object>();
object ignored;
Assert.Throws<ArgumentNullException>("key", () => cwt.Add(null, new object())); // null key
Assert.Throws<ArgumentNullException>("key", () => cwt.TryGetValue(null, out ignored)); // null key
Assert.Throws<ArgumentNullException>("key", () => cwt.Remove(null)); // null key
Assert.Throws<ArgumentNullException>("createValueCallback", () => cwt.GetValue(new object(), null)); // null delegate
object key = new object();
cwt.Add(key, key);
Assert.Throws<ArgumentException>(null, () => cwt.Add(key, key)); // duplicate key
}
private ConditionalWeakTable<Compilation, Task<HostCompilationStartAnalysisScope>> GetOrCreateCompilationActionsCache(AnalyzerAndOptions analyzerAndOptions)
{
lock (_compilationScopeMap)
{
ConditionalWeakTable<Compilation, Task<HostCompilationStartAnalysisScope>> value;
if (_compilationScopeMap.TryGetValue(analyzerAndOptions, out value))
{
return value;
}
value = new ConditionalWeakTable<Compilation, Task<HostCompilationStartAnalysisScope>>();
_compilationScopeMap.Add(analyzerAndOptions, value);
return value;
}
}
public AnalysisState(ImmutableArray<DiagnosticAnalyzer> analyzers, CompilationData compilationData)
{
_gate = new object();
_analyzerStateMap = CreateAnalyzerStateMap(analyzers, out _analyzerStates);
_compilationData = compilationData;
_pendingSourceEvents = new Dictionary<SyntaxTree, HashSet<CompilationEvent>>();
_pendingNonSourceEvents = new HashSet<CompilationEvent>();
_lazyAnalyzerActionCountsMap = null;
_semanticModelsMap = new ConditionalWeakTable<SyntaxTree, SemanticModel>();
_treesWithGeneratedSourceEvents = new HashSet<SyntaxTree>();
_partialSymbolsWithGeneratedSourceEvents = new HashSet<ISymbol>();
_compilationStartGenerated = false;
_compilationEndGenerated = false;
_compilationEventsPool = new ObjectPool<HashSet<CompilationEvent>>(() => new HashSet<CompilationEvent>());
_pooledEventsWithAnyActionsSet = new HashSet<CompilationEvent>();
}
public Task<HostCompilationStartAnalysisScope> GetCompilationAnalysisScopeAsync(
HostSessionStartAnalysisScope sessionScope,
AnalyzerExecutor analyzerExecutor)
{
Func<Compilation, Task<HostCompilationStartAnalysisScope>> getTask = comp =>
{
return Task.Run(() =>
{
var compilationAnalysisScope = new HostCompilationStartAnalysisScope(sessionScope);
analyzerExecutor.ExecuteCompilationStartActions(sessionScope.CompilationStartActions, compilationAnalysisScope);
return compilationAnalysisScope;
}, analyzerExecutor.CancellationToken);
};
var callback = new ConditionalWeakTable<Compilation, Task<HostCompilationStartAnalysisScope>>.CreateValueCallback(getTask);
var compilationActionsCache = GetOrCreateCompilationActionsCache(analyzerExecutor.AnalyzerOptions);
return compilationActionsCache.GetValue(analyzerExecutor.Compilation, callback);
}
/*
* Ensure that a key that has no managed references to it gets automatically removed from the
* dictionary after GC happens. Also make sure the value gets gc’d as well.
*/
public static void TestKeyWithNoReferences_Pass1(int length)
{
tbl = new ConditionalWeakTable<string, string>();
weakRefKeyArr = new WeakReference[length];
weakRefValArr = new WeakReference[length];
for (int i = 0; i < length; i++)
{
String key = "KeyTestString" + i.ToString();
String value = "ValueTestString" + i.ToString();
tbl.Add(key, value);
// create a weak reference for the key
weakRefKeyArr[i] = new WeakReference(key, true);
weakRefValArr[i] = new WeakReference(value, true);
}
}
private Task<HostCompilationStartAnalysisScope> GetCompilationAnalysisScopeCoreAsync(
AnalyzerAndOptions analyzerAndOptions,
HostSessionStartAnalysisScope sessionScope,
AnalyzerExecutor analyzerExecutor)
{
Func<Compilation, Task<HostCompilationStartAnalysisScope>> getTask = comp =>
{
return Task.Run(() =>
{
var compilationAnalysisScope = new HostCompilationStartAnalysisScope(sessionScope);
analyzerExecutor.ExecuteCompilationStartActions(sessionScope.CompilationStartActions, compilationAnalysisScope);
return compilationAnalysisScope;
}, analyzerExecutor.CancellationToken);
};
var callback = new ConditionalWeakTable<Compilation, Task<HostCompilationStartAnalysisScope>>.CreateValueCallback(getTask);
var compilationActionsMap = _compilationScopeMap.GetOrAdd(analyzerAndOptions, new ConditionalWeakTable<Compilation, Task<HostCompilationStartAnalysisScope>>());
return compilationActionsMap.GetValue(analyzerExecutor.Compilation, callback);
}
protected static async Task<AbstractSyntaxTreeInfo> LoadAsync(
Document document,
Func<ObjectReader, VersionStamp, AbstractSyntaxTreeInfo> reader,
ConditionalWeakTable<BranchId, ConditionalWeakTable<DocumentId, AbstractSyntaxTreeInfo>> cache,
string persistenceName,
string serializationFormat,
CancellationToken cancellationToken)
{
var infoTable = cache.GetValue(document.Project.Solution.BranchId, _ => new ConditionalWeakTable<DocumentId, AbstractSyntaxTreeInfo>());
var version = await document.GetSyntaxVersionAsync(cancellationToken).ConfigureAwait(false);
// first look to see if we already have the info in the cache
AbstractSyntaxTreeInfo info;
if (infoTable.TryGetValue(document.Id, out info) && info.Version == version)
{
return info;
}
// cache is invalid. remove it
infoTable.Remove(document.Id);
// check primary cache to see whether we have valid info there
var primaryInfoTable = cache.GetValue(document.Project.Solution.Workspace.PrimaryBranchId, _ => new ConditionalWeakTable<DocumentId, AbstractSyntaxTreeInfo>());
if (primaryInfoTable.TryGetValue(document.Id, out info) && info.Version == version)
{
return info;
}
// check whether we can get it from persistence service
info = await LoadAsync(document, persistenceName, serializationFormat, reader, cancellationToken).ConfigureAwait(false);
if (info != null)
{
// save it in the cache. persisted info is always from primary branch. no reason to save it to the branched document cache.
primaryInfoTable.Remove(document.Id);
primaryInfoTable.GetValue(document.Id, _ => info);
return info;
}
// well, we don't have this information.
return null;
}
// this test ensures that while manipulating keys (through add/remove/lookup
// in the dictionary the overriden GetHashCode(), Equals(), and ==operator do not get invoked.
// Earlier implementation was using these functions virtually so overriding them would result in
// the overridden functions being invoked. But later on Ati changed implementation to use
// Runtime.GetHashCode and Object.ReferenceEquals so this test makes sure that overridden functions never get invoked.
public static void TestOverrides()
{
string[] stringArr = new string[50];
for (int i = 0; i < 50; i++)
{
stringArr[i] = "SomeTestString" + i.ToString();
}
ConditionalWeakTable<string, string> tbl = new ConditionalWeakTable<string, string>();
string str;
for (int i = 0; i < stringArr.Length; i++)
{
tbl.Add(stringArr[i], stringArr[i]);
tbl.TryGetValue(stringArr[i], out str);
tbl.Remove(stringArr[i]);
}
}
public static void GetValueTest()
{
ConditionalWeakTable<object, object> cwt = new ConditionalWeakTable<object, object>();
object key = new object();
object obj = null;
object value = cwt.GetValue(key, k => new object());
Assert.True(cwt.TryGetValue(key, out value));
Assert.Equal(value, cwt.GetOrCreateValue(key));
WeakReference<object> wrValue = new WeakReference<object>(value, false);
WeakReference<object> wrkey = new WeakReference<object>(key, false);
key = null;
value = null;
GC.Collect();
// key and value must be collected
Assert.False(wrValue.TryGetTarget(out obj));
Assert.False(wrkey.TryGetTarget(out obj));
}
public CodeFixService(
IDiagnosticAnalyzerService service,
[ImportMany]IEnumerable<Lazy<CodeFixProvider, CodeChangeProviderMetadata>> fixers,
[ImportMany]IEnumerable<Lazy<ISuppressionFixProvider, CodeChangeProviderMetadata>> suppressionProviders)
{
_diagnosticService = service;
var fixersPerLanguageMap = fixers.ToPerLanguageMapWithMultipleLanguages();
var suppressionProvidersPerLanguageMap = suppressionProviders.ToPerLanguageMapWithMultipleLanguages();
_workspaceFixersMap = GetFixerPerLanguageMap(fixersPerLanguageMap);
_suppressionProvidersMap = GetSupressionProvidersPerLanguageMap(suppressionProvidersPerLanguageMap);
// REVIEW: currently, fixer's priority is statically defined by the fixer itself. might considering making it more dynamic or configurable.
_fixerPriorityMap = GetFixerPriorityPerLanguageMap(fixersPerLanguageMap);
// Per-project fixers
_projectFixersMap = new ConditionalWeakTable<IReadOnlyList<AnalyzerReference>, ImmutableDictionary<string, List<CodeFixProvider>>>();
_analyzerReferenceToFixersMap = new ConditionalWeakTable<AnalyzerReference, ProjectCodeFixProvider>();
_createProjectCodeFixProvider = new ConditionalWeakTable<AnalyzerReference, ProjectCodeFixProvider>.CreateValueCallback(r => new ProjectCodeFixProvider(r));
_fixAllProviderMap = ImmutableDictionary<CodeFixProvider, FixAllProviderInfo>.Empty;
}
public void GetOrCreateValue () {
var cwt = new ConditionalWeakTable <object,object> ();
try {
cwt.GetOrCreateValue (null);
Assert.Fail ("#0");
} catch (ArgumentNullException) {}
object key = "foo";
object val = cwt.GetOrCreateValue (key);
Assert.IsTrue (val != null, "#2");
Assert.AreEqual (typeof (object), val.GetType () , "#3");
Assert.AreEqual (val, cwt.GetOrCreateValue (key), "#4");
var cwt2 = new ConditionalWeakTable <object, string> ();
try {
cwt2.GetOrCreateValue (key);
Assert.Fail ("#5");
} catch (MissingMethodException) {}
}
public static void Add(int numObjects)
{
// Isolated to ensure we drop all references even in debug builds where lifetime is extended by the JIT to the end of the method
Func<int, Tuple<ConditionalWeakTable<object, object>, WeakReference[], WeakReference[]>> body = count =>
{
object[] keys = Enumerable.Range(0, count).Select(_ => new object()).ToArray();
object[] values = Enumerable.Range(0, count).Select(_ => new object()).ToArray();
var cwt = new ConditionalWeakTable<object, object>();
for (int i = 0; i < count; i++)
{
cwt.Add(keys[i], values[i]);
}
for (int i = 0; i < count; i++)
{
object value;
Assert.True(cwt.TryGetValue(keys[i], out value));
Assert.Same(values[i], value);
Assert.Same(value, cwt.GetOrCreateValue(keys[i]));
Assert.Same(value, cwt.GetValue(keys[i], _ => new object()));
}
return Tuple.Create(cwt, keys.Select(k => new WeakReference(k)).ToArray(), values.Select(v => new WeakReference(v)).ToArray());
};
Tuple<ConditionalWeakTable<object, object>, WeakReference[], WeakReference[]> result = body(numObjects);
GC.Collect();
Assert.NotNull(result.Item1);
for (int i = 0; i < numObjects; i++)
{
Assert.False(result.Item2[i].IsAlive, $"Expected not to find key #{i}");
Assert.False(result.Item3[i].IsAlive, $"Expected not to find value #{i}");
}
}
private void SubscribeNotifyChangedEvent(object value, EventChangeType eventChangeType, bool isCollectionItem)
{
if (value == null)
{
return;
}
lock (_lockObject)
{
ConditionalWeakTable <object, IWeakEventListener> eventsTable;
List <IWeakEventListener> eventsList;
switch (eventChangeType)
{
case EventChangeType.Property:
if (_weakPropertyChangedListenersTable == null)
{
_weakPropertyChangedListenersTable = new ConditionalWeakTable <object, IWeakEventListener>();
}
if (_weakPropertyChangedListeners == null)
{
_weakPropertyChangedListeners = new List <IWeakEventListener>();
}
eventsTable = _weakPropertyChangedListenersTable;
eventsList = _weakPropertyChangedListeners;
break;
case EventChangeType.Collection:
if (_weakCollectionChangedListenersTable == null)
{
_weakCollectionChangedListenersTable = new ConditionalWeakTable <object, IWeakEventListener>();
}
if (_weakCollectionChangedListeners == null)
{
_weakCollectionChangedListeners = new List <IWeakEventListener>();
}
if (_collectionItems == null)
{
_collectionItems = new ConditionalWeakTable <object, List <WeakReference> >();
}
eventsTable = _weakCollectionChangedListenersTable;
eventsList = _weakCollectionChangedListeners;
break;
default:
throw new ArgumentOutOfRangeException("eventChangeType");
}
IWeakEventListener oldSubscription;
if (eventsTable.TryGetValue(value, out oldSubscription))
{
oldSubscription.Detach();
eventsList.Remove(oldSubscription);
eventsTable.Remove(value);
}
IWeakEventListener weakListener;
switch (eventChangeType)
{
case EventChangeType.Property:
if (isCollectionItem)
{
weakListener = this.SubscribeToWeakPropertyChangedEvent(value, OnObjectCollectionItemPropertyChanged);
}
else
{
weakListener = this.SubscribeToWeakPropertyChangedEvent(value, OnObjectPropertyChanged);
}
break;
case EventChangeType.Collection:
weakListener = this.SubscribeToWeakCollectionChangedEvent(value, OnObjectCollectionChanged);
var collection = value as ICollection;
if (collection != null)
{
var collectionItems = new List <WeakReference>();
foreach (var item in collection)
{
collectionItems.Add(new WeakReference(item));
}
_collectionItems.Add(value, collectionItems);
}
break;
default:
throw new ArgumentOutOfRangeException("eventChangeType");
}
eventsTable.Add(value, weakListener);
eventsList.Add(weakListener);
}
}
protected override SchedulerWrapper Clone(IScheduler scheduler, ConditionalWeakTable <IScheduler, IScheduler> cache)
{
return(new DisableOptimizationsScheduler(scheduler, _optimizationInterfaces, cache));
}
public static T GetOrCreate <T>(object value, ConditionalWeakTable <object, object> .CreateValueCallback checksumCreator) where T : IChecksummedObject
{
// same key should always return same checksum
return((T)s_cache.GetValue(value, checksumCreator));
}
public static IReadOnlyList <T> GetOrCreate <T>(IReadOnlyList <T> unorderedList, ConditionalWeakTable <object, object> .CreateValueCallback orderedListGetter)
{
return((IReadOnlyList <T>)s_cache.GetValue(unorderedList, orderedListGetter));
}
/// <inheritdoc />
protected ReferenceCacheBase(ConditionalWeakTable <TKey, TValue> cache)
{
_cache = cache;
_callback = Create;
}
internal SessionStateKeeper()
{
_stateMap = new ConditionalWeakTable <Runspace, SessionStateInternal>();
}
static HttpClientHander()
{
_httpClientsPool = new ConditionalWeakTable <Uri, HttpClientHander>();
_uris = new HashSet <Uri>();
SetupGlobalPoolFinalizer();
}
internal ReadyToRunCodegenCompilation(
DependencyAnalyzerBase <NodeFactory> dependencyGraph,
NodeFactory nodeFactory,
IEnumerable <ICompilationRootProvider> roots,
ILProvider ilProvider,
Logger logger,
DevirtualizationManager devirtualizationManager,
IEnumerable <string> inputFiles,
string compositeRootPath,
InstructionSetSupport instructionSetSupport,
bool resilient,
bool generateMapFile,
bool generateMapCsvFile,
bool generatePdbFile,
Func <MethodDesc, string> printReproInstructions,
string pdbPath,
bool generatePerfMapFile,
string perfMapPath,
int parallelism,
ProfileDataManager profileData,
ReadyToRunMethodLayoutAlgorithm methodLayoutAlgorithm,
ReadyToRunFileLayoutAlgorithm fileLayoutAlgorithm,
int customPESectionAlignment,
bool verifyTypeAndFieldLayout)
: base(
dependencyGraph,
nodeFactory,
roots,
ilProvider,
devirtualizationManager,
modulesBeingInstrumented: nodeFactory.CompilationModuleGroup.CompilationModuleSet,
logger,
instructionSetSupport)
{
_resilient = resilient;
_parallelism = parallelism;
_generateMapFile = generateMapFile;
_generateMapCsvFile = generateMapCsvFile;
_generatePdbFile = generatePdbFile;
_pdbPath = pdbPath;
_generatePerfMapFile = generatePerfMapFile;
_perfMapPath = perfMapPath;
_customPESectionAlignment = customPESectionAlignment;
SymbolNodeFactory = new ReadyToRunSymbolNodeFactory(nodeFactory, verifyTypeAndFieldLayout);
_corInfoImpls = new ConditionalWeakTable <Thread, CorInfoImpl>();
_inputFiles = inputFiles;
_compositeRootPath = compositeRootPath;
_printReproInstructions = printReproInstructions;
CompilationModuleGroup = (ReadyToRunCompilationModuleGroupBase)nodeFactory.CompilationModuleGroup;
// Generate baseline support specification for InstructionSetSupport. This will prevent usage of the generated
// code if the runtime environment doesn't support the specified instruction set
string instructionSetSupportString = ReadyToRunInstructionSetSupportSignature.ToInstructionSetSupportString(instructionSetSupport);
ReadyToRunInstructionSetSupportSignature instructionSetSupportSig = new ReadyToRunInstructionSetSupportSignature(instructionSetSupportString);
_dependencyGraph.AddRoot(new Import(NodeFactory.EagerImports, instructionSetSupportSig), "Baseline instruction set support");
_profileData = profileData;
_fileLayoutOptimizer = new ReadyToRunFileLayoutOptimizer(methodLayoutAlgorithm, fileLayoutAlgorithm, profileData, _nodeFactory);
}
public DisableOptimizationsScheduler(IScheduler scheduler, Type[] optimizationInterfaces, ConditionalWeakTable <IScheduler, IScheduler> cache)
: base(scheduler, cache)
{
_optimizationInterfaces = optimizationInterfaces;
}
/// <summary>
/// Releases unmanaged and - optionally - managed resources
/// </summary>
/// <param name="disposing"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
if (!this._isDisposed)
{
bool disposeLock = false;
INotifyComposablePartCatalogChanged catalogToUnsubscribeFrom = null;
HashSet <IDisposable> partsToDispose = null;
ExportProvider sourceProviderToUnsubscribeFrom = null;
ImportEngine importEngineToDispose = null;
try
{
using (this._lock.LockStateForWrite())
{
if (!this._isDisposed)
{
catalogToUnsubscribeFrom = this._catalog as INotifyComposablePartCatalogChanged;
this._catalog = null;
sourceProviderToUnsubscribeFrom = this._sourceProvider;
this._sourceProvider = null;
importEngineToDispose = this._importEngine;
this._importEngine = null;
partsToDispose = this._partsToDispose;
this._partsToDispose = new HashSet <IDisposable>();
this._activatedParts.Clear();
this._conditionalReferencesForRecomposableParts = null;
disposeLock = true;
this._isDisposed = true;
}
}
}
finally
{
if (catalogToUnsubscribeFrom != null)
{
catalogToUnsubscribeFrom.Changing -= this.OnCatalogChanging;
}
if (sourceProviderToUnsubscribeFrom != null)
{
sourceProviderToUnsubscribeFrom.ExportsChanging -= this.OnExportsChangingInternal;
}
if (importEngineToDispose != null)
{
importEngineToDispose.Dispose();
}
if (partsToDispose != null)
{
foreach (var part in partsToDispose)
{
part.Dispose();
}
}
if (disposeLock)
{
this._lock.Dispose();
}
}
}
}
}
public SharpeMaximizer(IOptimizerConfiguration config, IFitnessFilter filter) : base(config, filter)
{
_resultIndex = new ConditionalWeakTable <OptimizerResult, string>();
}
private static void DebugPrintTo(Type type, object obj, Action <string> log, string indent, ConditionalWeakTable <object, Ref <bool> > table, int maxDepth)
{
if (maxDepth == 0)
{
log(indent + "<Max depth reached>");
return;
}
if (obj == null)
{
log(indent + "null");
return;
}
table.Add(obj, true);
if (type.IsPrimitive)
{
log(indent + obj.ToString());
return;
}
if (type.IsEnum)
{
log(indent + obj.ToString());
return;
}
if (type == typeof(string))
{
log(indent + $"\"{obj.ToString()}\"");
return;
}
if (type.IsArray)
{
log(indent + $"{type.GetElementType()} [");
foreach (var o in obj as Array)
{
if (type.GetElementType().IsPrimitive)
{
log(indent + "- " + o?.ToString() ?? "null");
}
else if (type.GetElementType().IsEnum)
{
log(indent + "- " + o?.ToString() ?? "null");
}
else if (type.GetElementType() == typeof(string))
{
log(indent + "- " + $"\"{o?.ToString()}\"");
}
else
{
log(indent + $"- {o?.GetType()?.ToString() ?? "null"}");
if (o != null)
{
if (!table.TryGetValue(o, out _))
{
DebugPrintTo(o.GetType(), o, log, indent + " ", table, maxDepth - 1);
}
else
{
log(indent + " <Already printed>");
}
}
}
}
log(indent + "]");
return;
}
var fields = type.GetFields(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
foreach (var field in fields)
{
var value = field.GetValue(obj);
if (field.FieldType.IsPrimitive)
{
log(indent + field.Name + ": " + value?.ToString() ?? "null");
}
else if (field.FieldType.IsEnum)
{
log(indent + field.Name + ": " + value?.ToString() ?? "null");
}
else if (field.FieldType == typeof(string))
{
log(indent + field.Name + ": " + $"\"{value?.ToString()}\"");
}
else
{
log(indent + field.Name + ": " + value?.GetType()?.ToString() ?? "null");
if (value != null)
{
if (!table.TryGetValue(value, out _))
{
DebugPrintTo(value?.GetType() ?? field.FieldType, value, log, indent + " ", table, maxDepth - 1);
}
else
{
log(indent + " <Already printed>");
}
}
}
}
}
//only used for unit testing internal static void ClearCache() => s_instances = new ConditionalWeakTable <Type, ResourceDictionary>();
internal CompilationWithAnalyzers GetOrCreateCompilationWithAnalyzers(Project project, ConditionalWeakTable <Project, CompilationWithAnalyzers> .CreateValueCallback createCompilationWithAnalyzers)
{
Contract.ThrowIfFalse(project.SupportsCompilation);
return(_compilationWithAnalyzersMap.GetValue(project, createCompilationWithAnalyzers));
}
public async Task When_Add_Remove(object controlTypeRaw, int count)
{
#if TRACK_REFS
var initialInactiveStats = Uno.UI.DataBinding.BinderReferenceHolder.GetInactiveViewReferencesStats();
var initialActiveStats = Uno.UI.DataBinding.BinderReferenceHolder.GetReferenceStats();
#endif
Type GetType(string s)
=> AppDomain.CurrentDomain.GetAssemblies().Select(a => a.GetType(s)).Where(t => t != null).First() !;
var controlType = controlTypeRaw switch
{
Type ct => ct,
string s => GetType(s),
_ => throw new InvalidOperationException()
};
var _holders = new ConditionalWeakTable <DependencyObject, Holder>();
void TrackDependencyObject(DependencyObject target) => _holders.Add(target, new Holder(HolderUpdate));
var maxCounter = 0;
var activeControls = 0;
var maxActiveControls = 0;
var rootContainer = new ContentControl();
TestServices.WindowHelper.WindowContent = rootContainer;
await TestServices.WindowHelper.WaitForIdle();
for (int i = 0; i < count; i++)
{
await MaterializeControl(controlType, _holders, maxCounter, rootContainer);
}
TestServices.WindowHelper.WindowContent = null;
void HolderUpdate(int value)
{
_ = rootContainer.Dispatcher.RunAsync(CoreDispatcherPriority.High,
() =>
{
maxCounter = Math.Max(value, maxCounter);
activeControls = value;
maxActiveControls = maxCounter;
}
);
}
var sw = Stopwatch.StartNew();
var endTime = TimeSpan.FromSeconds(30);
var maxTime = TimeSpan.FromMinutes(1);
var lastActiveControls = activeControls;
while (sw.Elapsed < endTime && sw.Elapsed < maxTime && activeControls != 0)
{
GC.Collect();
GC.WaitForPendingFinalizers();
// Waiting for idle is required for collection of
// DispatcherConditionalDisposable to be executed
await TestServices.WindowHelper.WaitForIdle();
if (lastActiveControls != activeControls)
{
// Expand the timeout if the count has changed, as the
// GC may still be processing levels of the hierarcy on iOS
endTime += TimeSpan.FromMilliseconds(500);
}
lastActiveControls = activeControls;
}
#if TRACK_REFS
Uno.UI.DataBinding.BinderReferenceHolder.LogInactiveViewReferencesStatsDiff(initialInactiveStats);
Uno.UI.DataBinding.BinderReferenceHolder.LogActiveViewReferencesStatsDiff(initialActiveStats);
#endif
var retainedMessage = "";
#if NET5_0 || __IOS__ || __ANDROID__
if (activeControls != 0)
{
var retainedTypes = _holders.AsEnumerable().Select(ExtractTargetName).JoinBy(";");
Console.WriteLine($"Retained types: {retainedTypes}");
retainedMessage = $"Retained types: {retainedTypes}";
}
#endif
#if __IOS__
// On iOS, the collection of objects does not seem to be reliable enough
// to always go to zero during runtime tests. If the count of active objects
// is arbitrarily below the half of the number of top-level objects.
// created, we can assume that enough objects were collected entirely.
Assert.IsTrue(activeControls < count, retainedMessage);
#else
Assert.AreEqual(0, activeControls, retainedMessage);
internal DiagnosticAnalyzerInfoCache()
{
_descriptorsInfo = new ConditionalWeakTable <DiagnosticAnalyzer, DiagnosticDescriptorsInfo>();
}
async Task MaterializeControl(Type controlType, ConditionalWeakTable <DependencyObject, Holder> _holders, int maxCounter, ContentControl rootContainer)
{
var item = (FrameworkElement)Activator.CreateInstance(controlType);
TrackDependencyObject(item);
rootContainer.Content = item;
await TestServices.WindowHelper.WaitForIdle();
// Add all children to the tracking
foreach (var child in item.EnumerateAllChildren(maxDepth: 200).OfType <UIElement>())
{
TrackDependencyObject(child);
if (child is FrameworkElement fe)
{
// Don't use VisualStateManager.GetVisualStateManager to avoid creating an instance
if (child.GetValue(VisualStateManager.VisualStateManagerProperty) is VisualStateManager vsm)
{
TrackDependencyObject(vsm);
if (VisualStateManager.GetVisualStateGroups(fe) is { } groups)
{
foreach (var group in groups)
{
TrackDependencyObject(group);
foreach (var transition in group.Transitions)
{
TrackDependencyObject(transition);
foreach (var timeline in transition.Storyboard.Children)
{
TrackDependencyObject(timeline);
}
}
foreach (var state in group.States)
{
TrackDependencyObject(state);
foreach (var setter in state.Setters)
{
TrackDependencyObject(setter);
}
foreach (var trigger in state.StateTriggers)
{
TrackDependencyObject(trigger);
}
}
}
}
}
}
}
rootContainer.Content = null;
GC.Collect();
GC.WaitForPendingFinalizers();
// Waiting for idle is required for collection of
// DispatcherConditionalDisposable to be executed
await TestServices.WindowHelper.WaitForIdle();
}
/// <summary>
/// Create an instance of this class.
/// </summary>
public StackTraceSymbols()
{
_metadataCache = new ConditionalWeakTable <Assembly, MetadataReaderProvider?>();
}
/// <summary>
/// Releases unmanaged and - optionally - managed resources
/// </summary>
/// <param name="disposing"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
if (!_isDisposed)
{
//Note: We do not dispose _lock on dispose because DisposePart needs it to check isDisposed state
// to eliminate race conditions between it and Dispose
INotifyComposablePartCatalogChanged catalogToUnsubscribeFrom = null;
HashSet <IDisposable> partsToDispose = null;
ImportEngine importEngine = null;
ExportProvider sourceProvider = null;
AggregateExportProvider aggregateExportProvider = null;
try
{
using (_lock.LockStateForWrite())
{
if (!_isDisposed)
{
catalogToUnsubscribeFrom = _catalog as INotifyComposablePartCatalogChanged;
_catalog = null;
aggregateExportProvider = _innerExportProvider as AggregateExportProvider;
_innerExportProvider = null;
sourceProvider = _sourceProvider;
_sourceProvider = null;
importEngine = _importEngine;
_importEngine = null;
partsToDispose = _partsToDispose;
_gcRoots = null;
_isDisposed = true;
}
}
}
finally
{
if (catalogToUnsubscribeFrom != null)
{
catalogToUnsubscribeFrom.Changing -= OnCatalogChanging;
}
if (aggregateExportProvider != null)
{
aggregateExportProvider.Dispose();
}
if (sourceProvider != null)
{
sourceProvider.ExportsChanging -= OnExportsChangingInternal;
}
if (importEngine != null)
{
importEngine.Dispose();
}
if (partsToDispose != null)
{
foreach (var part in partsToDispose)
{
part.Dispose();
}
}
}
}
}
}
private ProjectId?GetProjectIdDirectly(
ISymbol symbol, ConditionalWeakTable <ISymbol, ProjectId?> unrootedSymbolToProjectId)
{
if (symbol.IsKind(SymbolKind.Namespace, out INamespaceSymbol? ns))
{
if (ns.ContainingCompilation != null)
{
// A namespace that spans a compilation. These don't belong to an assembly/module directly.
// However, as we're looking for the project this corresponds to, we can look for the
// source-module component (the first in the constituent namespaces) and then search using that.
return(GetOriginatingProjectId(ns.ConstituentNamespaces[0]));
}
}
else if (symbol.IsKind(SymbolKind.Assembly) ||
symbol.IsKind(SymbolKind.NetModule) ||
symbol.IsKind(SymbolKind.DynamicType))
{
if (!unrootedSymbolToProjectId.TryGetValue(symbol, out var projectId))
{
// First, look through all the projects, and see if this symbol came from the primary assembly for
// that project. (i.e. was a source symbol from that project, or was retargetted into that
// project). If so, that's the originating project.
//
// If we don't find any primary results, then look through all the secondary assemblies (i.e.
// references) for that project. This is the case for metadata symbols. A metadata symbol might be
// found in many projects, so we just return the first result as that's just as good for finding the
// metadata symbol as any other project.
projectId = TryGetProjectId(symbol, primary: true) ??
TryGetProjectId(symbol, primary: false);
// Have to lock as there's no atomic AddOrUpdate in netstandard2.0 and we could throw if two
// threads tried to add the same item.
#if !NETCOREAPP
lock (unrootedSymbolToProjectId)
{
unrootedSymbolToProjectId.Remove(symbol);
unrootedSymbolToProjectId.Add(symbol, projectId);
}
#else
unrootedSymbolToProjectId.AddOrUpdate(symbol, projectId);
#endif
}
return(projectId);
}
else if (symbol.IsKind(SymbolKind.TypeParameter, out ITypeParameterSymbol? typeParameter) &&
typeParameter.TypeParameterKind == TypeParameterKind.Cref)
{
// Cref type parameters don't belong to any containing symbol. But we can map them to a doc/project
// using the declaring syntax of the type parameter itself.
var tree = typeParameter.Locations[0].SourceTree;
var doc = this.GetDocumentState(tree, projectId: null);
return(doc?.Id.ProjectId);
}
return(null);
ProjectId?TryGetProjectId(ISymbol symbol, bool primary)
{
foreach (var(id, tracker) in _projectIdToTrackerMap)
{
if (tracker.ContainsAssemblyOrModuleOrDynamic(symbol, primary))
{
return(id);
}
}
return(null);
}
}
public static ITable <TIn, TOut> ToTable <TIn, TOut>(this ConditionalWeakTable <TIn, Tuple <TOut> > @this)
where TIn : class where TOut : struct
=> StructureValueTables <TIn, TOut> .Default.Get(@this);
/// <summary>
/// Releases unmanaged and - optionally - managed resources
/// </summary>
/// <param name="disposing"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
if (!this._isDisposed)
{
bool disposeLock = false;
INotifyComposablePartCatalogChanged catalogToUnsubscribeFrom = null;
HashSet <IDisposable> partsToDispose = null;
ImportEngine importEngine = null;
ExportProvider sourceProvider = null;
AggregateExportProvider aggregateExportProvider = null;
try
{
using (this._lock.LockStateForWrite())
{
if (!this._isDisposed)
{
catalogToUnsubscribeFrom = this._catalog as INotifyComposablePartCatalogChanged;
this._catalog = null;
aggregateExportProvider = this._innerExportProvider as AggregateExportProvider;
this._innerExportProvider = null;
sourceProvider = this._sourceProvider;
this._sourceProvider = null;
importEngine = this._importEngine;
this._importEngine = null;
partsToDispose = this._partsToDispose;
this._gcRoots = null;
disposeLock = true;
this._isDisposed = true;
}
}
}
finally
{
if (catalogToUnsubscribeFrom != null)
{
catalogToUnsubscribeFrom.Changing -= this.OnCatalogChanging;
}
if (aggregateExportProvider != null)
{
aggregateExportProvider.Dispose();
}
if (sourceProvider != null)
{
sourceProvider.ExportsChanging -= this.OnExportsChangingInternal;
}
if (importEngine != null)
{
importEngine.Dispose();
}
if (partsToDispose != null)
{
foreach (var part in partsToDispose)
{
part.Dispose();
}
}
if (disposeLock)
{
this._lock.Dispose();
}
}
}
}
}
public static ITable <TIn, TOut> ToTable <TIn, TOut>(this ConditionalWeakTable <TIn, TOut> @this)
where TOut : class where TIn : class
=> ReferenceValueTables <TIn, TOut> .Default.Get(@this);
public static Checksum GetOrCreate(object value, ConditionalWeakTable <object, object> .CreateValueCallback checksumCreator)
{
// same key should always return same checksum
return((Checksum)s_cache.GetValue(value, checksumCreator));
}
/// <summary>
/// Initializes a new instance of the <see cref="PropertyObserver"/> class.
/// </summary>
public PropertyObserver()
{
table = new ConditionalWeakTable <INotifyPropertyChanged, Subscriber>();
}
public FinalizableLink(int id, object obj, ConditionalWeakTable <object, object> cwt)
{
this.id = id;
this.obj = obj;
this.cwt = cwt;
}
private static SemanticModel?GetCachedSemanticModel(ConditionalWeakTable <SyntaxNode, WeakReference <SemanticModel> > nodeMap, SyntaxNode newMember) => nodeMap.TryGetValue(newMember, out var cached) && cached.TryGetTarget(out var model) ? model : null;
internal TokenCache(byte[] data)
{
_data = data;
_lastUpdated = DateTimeOffset.UtcNow;
_cacheAccessMap = new ConditionalWeakTable <object, CacheTimestamp>();
}
private static async Task GetDependentTypesInProjectAsync(
INamedTypeSymbol type, Project project, Solution solution, Func <INamedTypeSymbol, INamedTypeSymbol, bool> predicate, ConditionalWeakTable <Compilation, ConcurrentDictionary <SymbolKey, List <SymbolKey> > > cache, bool locationsInMetadata, ConcurrentSet <ISymbol> results, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
var compilation = await project.GetCompilationAsync(cancellationToken).ConfigureAwait(false);
var typeId = type.GetSymbolKey();
List <SymbolKey> dependentTypeIds;
if (!TryGetDependentTypes(cache, compilation, typeId, out dependentTypeIds))
{
List <INamedTypeSymbol> allTypes;
if (locationsInMetadata)
{
// From metadata, have to check other (non private) metadata types, as well as
// source types.
allTypes = GetAllSourceAndAccessibleTypesInCompilation(compilation, cancellationToken);
}
else
{
// It's from source, so only other source types could derive from it.
allTypes = GetAllSourceTypesInCompilation(compilation, cancellationToken);
}
dependentTypeIds = new List <SymbolKey>();
foreach (var t in allTypes)
{
cancellationToken.ThrowIfCancellationRequested();
if (predicate(t, type))
{
dependentTypeIds.Add(t.GetSymbolKey());
}
}
dependentTypeIds = GetOrAddDependentTypes(cache, compilation, typeId, dependentTypeIds);
}
foreach (var id in dependentTypeIds)
{
cancellationToken.ThrowIfCancellationRequested();
var resolvedSymbols = id.Resolve(compilation, cancellationToken: cancellationToken).GetAllSymbols();
foreach (var resolvedSymbol in resolvedSymbols)
{
var mappedSymbol = await SymbolFinder.FindSourceDefinitionAsync(resolvedSymbol, solution, cancellationToken).ConfigureAwait(false) ?? resolvedSymbol;
results.Add(mappedSymbol);
}
}
}
/// <summary>
/// Creates a new JavaScript engine.
/// </summary>
public JavaScriptEngine()
{
_contexts = new ConditionalWeakTable<IWindow, EngineInstance>();
_external = new Dictionary<String, Object>();
}
private DiagnosticAnalyzerService()
{
_map = new ConditionalWeakTable <Workspace, BaseDiagnosticIncrementalAnalyzer>();
_createIncrementalAnalyzer = CreateIncrementalAnalyzerCallback;
}