protected override void LookupSymbolsInSingleBinder(
LookupResult result, string name, int arity, ConsList<Symbol> basesBeingResolved, LookupOptions options, Binder originalBinder, bool diagnose, ref HashSet<DiagnosticInfo> useSiteDiagnostics)
{
if ((options & (LookupOptions.NamespaceAliasesOnly | LookupOptions.MustBeInvocableIfMember)) != 0)
{
return;
}
Debug.Assert(result.IsClear);
var count = parameterMap.GetCountForKey(name);
if (count == 1)
{
ParameterSymbol p;
parameterMap.TryGetSingleValue(name, out p);
result.MergeEqual(originalBinder.CheckViability(p, arity, options, null, diagnose, ref useSiteDiagnostics));
}
else if (count > 1)
{
var parameters = parameterMap[name];
foreach (var sym in parameters)
{
result.MergeEqual(originalBinder.CheckViability(sym, arity, options, null, diagnose, ref useSiteDiagnostics));
}
}
}
internal sealed override void LookupSymbolsInSingleBinder(
LookupResult result,
string name,
int arity,
ConsList<Symbol> basesBeingResolved,
LookupOptions options,
Binder originalBinder,
bool diagnose,
ref HashSet<DiagnosticInfo> useSiteDiagnostics)
{
if ((options & (LookupOptions.NamespaceAliasesOnly | LookupOptions.NamespacesOrTypesOnly | LookupOptions.LabelsOnly)) != 0)
{
return;
}
var local = this.LookupPlaceholder(name);
if ((object)local == null)
{
base.LookupSymbolsInSingleBinder(result, name, arity, basesBeingResolved, options, originalBinder, diagnose, ref useSiteDiagnostics);
}
else
{
result.MergeEqual(this.CheckViability(local, arity, options, null, diagnose, ref useSiteDiagnostics, basesBeingResolved));
}
}
public LookupService(String databaseFile, LookupOptions options)
{
_dbReader = options == LookupOptions.GEOIP_MEMORY_CACHE
? new StreamDbReader(databaseFile)
: new CachedDbReader(databaseFile);
Init();
}
public LookupService(Stream stream, LookupOptions options)
{
_dbReader = options == LookupOptions.GEOIP_MEMORY_CACHE
? new StreamDbReader(stream)
: new CachedDbReader(stream);
Init();
}
protected override void AddLookupSymbolsInfoInSingleBinder(LookupSymbolsInfo result, LookupOptions options, Binder originalBinder)
{
var hostObjectType = GetHostObjectType();
if (hostObjectType.Kind != SymbolKind.ErrorType)
{
AddMemberLookupSymbolsInfo(result, hostObjectType, options, originalBinder);
}
}
protected override void AddLookupSymbolsInfoInSingleBinder(
LookupSymbolsInfo result, LookupOptions options, Binder originalBinder)
{
// Add types within namespaces imported through usings, but don't add nested namespaces.
LookupOptions usingOptions = (options & ~(LookupOptions.NamespaceAliasesOnly | LookupOptions.NamespacesOrTypesOnly)) | LookupOptions.MustNotBeNamespace;
Imports.AddLookupSymbolsInfoInUsings(ConsolidatedUsings, this, result, usingOptions);
}
protected override void AddLookupSymbolsInfoInSingleBinder(LookupSymbolsInfo result, LookupOptions options, Binder originalBinder)
{
if (options.CanConsiderLocals())
{
foreach (var parameter in primaryCtor.Parameters)
{
if (originalBinder.CanAddLookupSymbolInfo(parameter, options, null))
{
result.AddSymbol(parameter, parameter.Name, 0);
}
}
}
}
protected override void AddLookupSymbolsInfoInSingleBinder(LookupSymbolsInfo result, LookupOptions options, Binder originalBinder)
{
if (CanConsiderTypeParameters(options))
{
foreach (var parameter in _namedType.TypeParameters)
{
if (originalBinder.CanAddLookupSymbolInfo(parameter, options, null))
{
result.AddSymbol(parameter, parameter.Name, 0);
}
}
}
}
public DicResult Lookup(LangPair lang, string text, string ui = null, LookupOptions flags = 0)
{
RestRequest request = new RestRequest("lookup");
request.AddParameter("key", _key);
request.AddParameter("lang", lang.ToString().ToLowerInvariant());
request.AddParameter("text", text);
if (!string.IsNullOrEmpty(ui))
request.AddParameter("ui", ui);
if (flags != 0)
request.AddParameter("flags", (int)flags);
return SendRequest<DicResult>(request);
}
internal override void LookupSymbolsInSingleBinder(LookupResult result, string name, int arity, ConsList<Symbol> basesBeingResolved, LookupOptions options, Binder originalBinder, bool diagnose, ref HashSet<DiagnosticInfo> useSiteDiagnostics)
{
_sourceBinder.LookupSymbolsInSingleBinder(result, name, arity, basesBeingResolved, options, this, diagnose, ref useSiteDiagnostics);
var symbols = result.Symbols;
for (int i = 0; i < symbols.Count; i++)
{
// Type parameters requiring mapping to the target type and
// should be found by WithMethodTypeParametersBinder instead.
var parameter = (ParameterSymbol)symbols[i];
Debug.Assert(parameter.ContainingSymbol == _sourceBinder.ContainingMemberOrLambda);
symbols[i] = _targetParameters[parameter.Ordinal + _parameterOffset];
}
}
internal override void LookupSymbolsInSingleBinder(
LookupResult result, string name, int arity, ConsList<Symbol> basesBeingResolved, LookupOptions options, Binder originalBinder, bool diagnose, ref HashSet<DiagnosticInfo> useSiteDiagnostics)
{
Debug.Assert(result.IsClear);
if ((options & LookupOptions.NamespaceAliasesOnly) != 0)
{
return;
}
foreach (var parameterSymbol in parameterMap[name])
{
result.MergeEqual(originalBinder.CheckViability(parameterSymbol, arity, options, null, diagnose, ref useSiteDiagnostics));
}
}
protected override void LookupSymbolsInSingleBinder(
LookupResult result, string name, int arity, ConsList<Symbol> basesBeingResolved, LookupOptions options, Binder originalBinder, bool diagnose, ref HashSet<DiagnosticInfo> useSiteDiagnostics)
{
if ((options & (LookupOptions.NamespaceAliasesOnly | LookupOptions.MustBeInvocableIfMember)) != 0)
{
return;
}
Debug.Assert(result.IsClear);
foreach (ParameterSymbol parameter in parameters)
{
if (parameter.Name == name)
{
result.MergeEqual(originalBinder.CheckViability(parameter, arity, options, null, diagnose, ref useSiteDiagnostics));
}
}
}
internal override void GetCandidateExtensionMethods(
bool searchUsingsNotNamespace,
ArrayBuilder<MethodSymbol> methods,
string name,
int arity,
LookupOptions options,
bool isCallerSemanticModel)
{
if (searchUsingsNotNamespace)
{
foreach (var nsOrType in ConsolidatedUsings)
{
if (nsOrType.NamespaceOrType.Kind == SymbolKind.Namespace)
{
((NamespaceSymbol)nsOrType.NamespaceOrType).GetExtensionMethods(methods, name, arity, options);
}
}
}
}
internal override void LookupSymbolsInSingleBinder(
LookupResult result, string name, int arity, ConsList<Symbol> basesBeingResolved, LookupOptions options, Binder originalBinder, bool diagnose, ref HashSet<DiagnosticInfo> useSiteDiagnostics)
{
var hostObjectType = GetHostObjectType();
if (hostObjectType.Kind == SymbolKind.ErrorType)
{
// The name '{0}' does not exist in the current context (are you missing a reference to assembly '{1}'?)
result.SetFrom(new CSDiagnosticInfo(
ErrorCode.ERR_NameNotInContextPossibleMissingReference,
new object[] { name, ((MissingMetadataTypeSymbol)hostObjectType).ContainingAssembly.Identity },
ImmutableArray<Symbol>.Empty,
ImmutableArray<Location>.Empty
));
}
else
{
LookupMembersInternal(result, hostObjectType, name, arity, basesBeingResolved, options, originalBinder, diagnose, ref useSiteDiagnostics);
}
}
internal override void LookupSymbolsInSingleBinder(
LookupResult result, string name, int arity, ConsList<Symbol> basesBeingResolved, LookupOptions options, Binder originalBinder, bool diagnose, ref HashSet<DiagnosticInfo> useSiteDiagnostics)
{
if (!ShouldLookInUsings(options))
{
return;
}
LookupResult tmp = LookupResult.GetInstance();
// usings:
Imports.Empty.LookupSymbolInUsings(ConsolidatedUsings, originalBinder, tmp, name, arity, basesBeingResolved, options, diagnose, ref useSiteDiagnostics);
// if we found a viable result in imported namespaces, use it instead of unviable symbols found in source:
if (tmp.IsMultiViable)
{
result.MergeEqual(tmp);
}
tmp.Free();
}
internal sealed override void LookupSymbolsInSingleBinder(
LookupResult result,
string name,
int arity,
ConsList<Symbol> basesBeingResolved,
LookupOptions options,
Binder originalBinder,
bool diagnose,
ref HashSet<DiagnosticInfo> useSiteDiagnostics)
{
if ((options & (LookupOptions.NamespaceAliasesOnly | LookupOptions.NamespacesOrTypesOnly | LookupOptions.LabelsOnly)) != 0)
{
return;
}
if (name.StartsWith("0x", StringComparison.OrdinalIgnoreCase))
{
var valueText = name.Substring(2);
ulong address;
if (!ulong.TryParse(valueText, NumberStyles.AllowHexSpecifier, CultureInfo.InvariantCulture, out address))
{
// Invalid value should have been caught by Lexer.
throw ExceptionUtilities.UnexpectedValue(valueText);
}
var local = new ObjectAddressLocalSymbol(_containingMethod, name, this.Compilation.GetSpecialType(SpecialType.System_Object), address);
result.MergeEqual(this.CheckViability(local, arity, options, null, diagnose, ref useSiteDiagnostics, basesBeingResolved));
}
else
{
LocalSymbol lowercaseReturnValueAlias;
if (_lowercaseReturnValueAliases.TryGetValue(name, out lowercaseReturnValueAlias))
{
result.MergeEqual(this.CheckViability(lowercaseReturnValueAlias, arity, options, null, diagnose, ref useSiteDiagnostics, basesBeingResolved));
}
else
{
base.LookupSymbolsInSingleBinder(result, name, arity, basesBeingResolved, options, originalBinder, diagnose, ref useSiteDiagnostics);
}
}
}
public TaxonSelectorContentProvider(User user, TaxonExplorer explorer, LookupOptions options)
{
this.User = user;
_explorer = explorer;
_options = options;
}
/// <summary>
/// Looks up the key value and returns the corresponding mapping.
/// </summary>
/// <typeparam name="TMapping">Mapping type.</typeparam>
/// <typeparam name="TKey">Key type.</typeparam>
/// <param name="key">Input key value.</param>
/// <param name="lookupOptions">Whether to use cache and/or storage for lookups.</param>
/// <param name="constructMapping">Delegate to construct a mapping object.</param>
/// <param name="errorCategory">Category under which errors must be thrown.</param>
/// <returns>Mapping that contains the key value.</returns>
protected TMapping Lookup <TMapping, TKey>(
TKey key,
LookupOptions lookupOptions,
Func <ShardMapManager, ShardMap, IStoreMapping, TMapping> constructMapping,
ShardManagementErrorCategory errorCategory)
where TMapping : class, IShardProvider
{
ShardKey sk = new ShardKey(ShardKey.ShardKeyTypeFromType(typeof(TKey)), key);
// Try to lookup in cache. Note the interation with cache removal later in this method.
bool tryLookupInCache = lookupOptions.HasFlag(LookupOptions.LookupInCache);
if (tryLookupInCache)
{
ICacheStoreMapping cachedMapping = this.Manager.Cache.LookupMappingByKey(this.ShardMap.StoreShardMap, sk);
if (cachedMapping != null)
{
return(constructMapping(this.Manager, this.ShardMap, cachedMapping.Mapping));
}
}
// Cache-miss (or didn't use cache), find mapping for given key in GSM.
if (lookupOptions.HasFlag(LookupOptions.LookupInStore))
{
IStoreResults gsmResult;
Stopwatch stopwatch = Stopwatch.StartNew();
using (IStoreOperationGlobal op = this.Manager.StoreOperationFactory.CreateFindMappingByKeyGlobalOperation(
this.Manager,
"Lookup",
this.ShardMap.StoreShardMap,
sk,
CacheStoreMappingUpdatePolicy.OverwriteExisting,
errorCategory,
true,
false))
{
gsmResult = op.Do();
}
stopwatch.Stop();
Tracer.TraceVerbose(
TraceSourceConstants.ComponentNames.BaseShardMapper,
"Lookup",
"Lookup key from GSM complete; Key type : {0}; Result: {1}; Duration: {2}",
typeof(TKey),
gsmResult.Result,
stopwatch.Elapsed);
// If mapping was found, return it.
if (gsmResult.Result != StoreResult.MappingNotFoundForKey)
{
return(gsmResult.StoreMappings.Select(sm => constructMapping(this.Manager, this.ShardMap, sm)).Single());
}
// If we could not locate the mapping, then we might need to update the cache to remove it.
//
// Only do this if we didn't already try to return the mapping from the cache (since, if it was found,
// we would have already returned it earlier).
if (!tryLookupInCache)
{
ICacheStoreMapping cachedMapping =
this.Manager.Cache.LookupMappingByKey(this.ShardMap.StoreShardMap, sk);
if (cachedMapping != null)
{
this.Manager.Cache.DeleteMapping(cachedMapping.Mapping);
}
}
}
// Mapping not found - return null
return(null);
}
internal override void LookupSymbolsInSingleBinder(
LookupResult result, string name, int arity, ConsList <Symbol> basesBeingResolved, LookupOptions options, Binder originalBinder, bool diagnose, ref HashSet <DiagnosticInfo> useSiteDiagnostics)
{
Debug.Assert(result.IsClear);
if ((options & LookupOptions.NamespaceAliasesOnly) != 0)
{
return;
}
foreach (var parameterSymbol in parameterMap[name])
{
result.MergeEqual(originalBinder.CheckViability(parameterSymbol, arity, options, null, diagnose, ref useSiteDiagnostics));
}
}
public TypeAnnotationConverter(ExpressionEval eval,
LookupOptions options = LookupOptions.Global | LookupOptions.Builtins)
{
_eval = eval ?? throw new ArgumentNullException(nameof(eval));
_options = options;
}
public static IMember LookupNameInScopes(this IExpressionEvaluator eval, string name, LookupOptions options = LookupOptions.Normal) => eval.LookupNameInScopes(name, out _, out _, options);
// Note: we do not mark nodes when looking up arities or names. This is because these two
// types of lookup are only around to make the public
// SemanticModel.LookupNames/LookupSymbols work and do not count as usages of the directives
// when the actual code is bound.
internal void AddLookupSymbolsInfoInAliases(Binder binder, LookupSymbolsInfo result, LookupOptions options)
{
if (this.UsingAliases != null)
{
foreach (var usingAlias in this.UsingAliases.Values)
{
var usingAliasSymbol = usingAlias.Alias.GetAliasTarget(basesBeingResolved: null);
if (binder.CanAddLookupSymbolInfo(usingAliasSymbol, options, null))
{
result.AddSymbol(usingAlias.Alias, usingAlias.Alias.Name, 0);
}
}
}
// TODO (tomat): extern aliases?
}
internal override void LookupSymbolsInSingleBinder(
LookupResult result,
string name,
int arity,
ConsList <TypeSymbol> basesBeingResolved,
LookupOptions options,
Binder originalBinder,
bool diagnose,
ref CompoundUseSiteInfo <AssemblySymbol> useSiteInfo
)
{
Debug.Assert(result.IsClear);
if (IsSubmissionClass)
{
this.LookupMembersInternal(
result,
_container,
name,
arity,
basesBeingResolved,
options,
originalBinder,
diagnose,
ref useSiteInfo
);
return;
}
var imports = GetImports(basesBeingResolved);
// first lookup members of the namespace
if ((options & LookupOptions.NamespaceAliasesOnly) == 0 && _container != null)
{
this.LookupMembersInternal(
result,
_container,
name,
arity,
basesBeingResolved,
options,
originalBinder,
diagnose,
ref useSiteInfo
);
if (result.IsMultiViable)
{
// symbols cannot conflict with using alias names
if (
arity == 0 &&
imports.IsUsingAlias(name, originalBinder.IsSemanticModelBinder)
)
{
CSDiagnosticInfo diagInfo = new CSDiagnosticInfo(
ErrorCode.ERR_ConflictAliasAndMember,
name,
_container
);
var error = new ExtendedErrorTypeSymbol(
(NamespaceOrTypeSymbol)null,
name,
arity,
diagInfo,
unreported: true
);
result.SetFrom(LookupResult.Good(error)); // force lookup to be done w/ error symbol as result
}
return;
}
}
// next try using aliases or symbols in imported namespaces
imports.LookupSymbol(
originalBinder,
result,
name,
arity,
basesBeingResolved,
options,
diagnose,
ref useSiteInfo
);
}
internal static ContentRoot?GetContentRootForElement(DependencyObject?dependencyObject, LookupOptions options = LookupOptions.WarningIfNotFound)
{
if (GetForElement(dependencyObject, options) is { } visualTree)
{
return(visualTree.ContentRoot);
}
if (dependencyObject?.GetContext().ContentRootCoordinator.CoreWindowContentRoot is ContentRoot contentRoot)
{
return(contentRoot);
}
return(null);
}
internal static VisualTree?GetVisualTreeViaTreeWalk(DependencyObject element, LookupOptions options)
{
DependencyObject?currentAncestor = element;
const bool isDebugMode =
#if VISUALTREEWALK_DEBUG
true;
#else
false;
#endif
VisualTree?result = null;
// We cap the tree walk because we've found at least one case (Skype app -- 19h1) where there's a cycle in the tree.
int iterationsLeft = 1000;
// Walk up the tree to find either the XamlIslandRoot or RootVisual
while (currentAncestor != null && iterationsLeft != 0)
{
--iterationsLeft;
if (currentAncestor.GetVisualTree() is VisualTree visualTree)
{
if (isDebugMode)
{
// In debug mode, let's keep walking up the tree, even though
// we found the answer, just to make sure the tree is consistent.
#pragma warning disable CS0162 // Unreachable code detected
if (result != null)
{
MUX_ASSERT(visualTree == result);
}
else
{
result = visualTree;
}
#pragma warning restore CS0162 // Unreachable code detected
}
else
{
return(visualTree);
}
}
if (currentAncestor is XamlIslandRoot xamlIslandRoot)
{
return(xamlIslandRoot.ContentRoot.VisualTree);
}
else if (currentAncestor is RootVisual rootVisual)
{
return(rootVisual.AssociatedVisualTree);
}
DependencyObject?nextAncestor = null;
//TODO Uno: Uncomment and implement
if (false) //currentAncestor.DoesAllowMultipleAssociation() && currentAncestor.GetParentCount() > 1)
{
// We cannot travese up a tree through a multiply associated element. Our goal is to support DOs being
// shared between XAML trees. We've seen cases where we traverse up the tree through CSetter objects,
// so for now we allow the traversal if there's one unique parent. TODO: This could be fragile? Allowing
// the traversal to happen when the parent count is 1 means that if this element gets another parent later,
// we're now in an inconsistent state.
// Bug 19548424: Investigate places where an element entering the tree doesn't have a unique VisualTree ptr
}
else
{
nextAncestor = currentAncestor.GetParentInternal(false /* public parent only */);
}
//TODO Uno: Uncomment and implement
////
//// We have a few tricks to figure out which VisualTree an element may be associated with.
//// There is now a cached weak VisualTree pointer on each DO that we update when we do a live
//// enter, so we may be able to remove some of these lookups. Let's investigate this with bug 19548424.
////
//if (Popup popup = do_pointer_cast<CPopup>(currentAncestor))
//{
// if (CDependencyObject * owner = popup->GetToolTipOwner())
// {
// nextAncestor = owner;
// }
// if (CFlyoutBase * flyout = popup->GetAssociatedFlyoutNoRef())
// {
// if (VisualTree * visualTree = VisualTree::GetForElementNoRef(flyout))
// {
// return visualTree;
// }
// }
// if (nextAncestor == null && popup->IsOpen())
// {
// // If the popup is open, its child will be parented to a PopupRoot. We
// // can quickly fine the root from there.
// CUIElement* popupChild = popup->GetChildNoRef();
// if (popupChild)
// {
// nextAncestor = popupChild->GetParentInternal(false /* public parent only */);
// }
// }
//}
//if (nextAncestor == null)
//{
// if (CCollection * collection = do_pointer_cast<CCollection>(currentAncestor))
// {
// nextAncestor = collection->GetOwner();
// }
//}
//// If the next visual parent is null, check the logical parent. Popups are connected to their child with
//// a logical link. Only allow the walk up if the logical parent is a popup.
//if (nextAncestor == null)
//{
// if (CUIElement * currentUIE = do_pointer_cast<CUIElement>(currentAncestor))
// {
// CPopup* nextAncestorPopup = do_pointer_cast<CPopup>(currentUIE->GetLogicalParentNoRef());
// nextAncestor = nextAncestorPopup;
// }
//}
currentAncestor = nextAncestor;
}
if (result == null)
{
if (options == LookupOptions.WarningIfNotFound)
{
// We didn't find anything
VisualTreeNotFoundWarning();
}
}
return(result);
}
internal static FocusManager?GetFocusManagerForElement(DependencyObject?dependencyObject, LookupOptions options = LookupOptions.WarningIfNotFound)
{
if (GetContentRootForElement(dependencyObject, options) is { } contentRoot)
{
return(contentRoot.FocusManager);
}
if (dependencyObject?.GetContext().ContentRootCoordinator.CoreWindowContentRoot is ContentRoot coreWindowContentRoot)
{
return(coreWindowContentRoot.FocusManager);
}
return(null);
}
internal void LookupSymbolInAliases(
Binder originalBinder,
LookupResult result,
string name,
int arity,
ConsList <TypeSymbol> basesBeingResolved,
LookupOptions options,
bool diagnose,
ref CompoundUseSiteInfo <AssemblySymbol> useSiteInfo
)
{
bool callerIsSemanticModel = originalBinder.IsSemanticModelBinder;
AliasAndUsingDirective alias;
if (this.UsingAliases.TryGetValue(name, out alias))
{
// Found a match in our list of normal aliases. Mark the alias as being seen so that
// it won't be reported to the user as something that can be removed.
var res = originalBinder.CheckViability(
alias.Alias,
arity,
options,
null,
diagnose,
ref useSiteInfo,
basesBeingResolved
);
if (res.Kind == LookupResultKind.Viable)
{
MarkImportDirective(alias.UsingDirective, callerIsSemanticModel);
}
result.MergeEqual(res);
}
foreach (var a in this.ExternAliases)
{
if (a.Alias.Name == name)
{
// Found a match in our list of extern aliases. Mark the extern alias as being
// seen so that it won't be reported to the user as something that can be
// removed.
var res = originalBinder.CheckViability(
a.Alias,
arity,
options,
null,
diagnose,
ref useSiteInfo,
basesBeingResolved
);
if (res.Kind == LookupResultKind.Viable)
{
MarkImportDirective(a.ExternAliasDirective, callerIsSemanticModel);
}
result.MergeEqual(res);
}
}
}
internal void LookupExtensionMethodsInUsings(
ArrayBuilder <MethodSymbol> methods,
string name,
int arity,
LookupOptions options,
Binder originalBinder
)
{
var binderFlags = originalBinder.Flags;
if (binderFlags.Includes(BinderFlags.InScriptUsing))
{
return;
}
Debug.Assert(methods.Count == 0);
bool callerIsSemanticModel = binderFlags.Includes(BinderFlags.SemanticModel);
// We need to avoid collecting multiple candidates for an extension method imported both through a namespace and a static class
// We will look for duplicates only if both of the following flags are set to true
bool seenNamespaceWithExtensionMethods = false;
bool seenStaticClassWithExtensionMethods = false;
foreach (var nsOrType in this.Usings)
{
switch (nsOrType.NamespaceOrType.Kind)
{
case SymbolKind.Namespace:
{
var count = methods.Count;
((NamespaceSymbol)nsOrType.NamespaceOrType).GetExtensionMethods(
methods,
name,
arity,
options
);
// If we found any extension methods, then consider this using as used.
if (methods.Count != count)
{
MarkImportDirective(nsOrType.UsingDirective, callerIsSemanticModel);
seenNamespaceWithExtensionMethods = true;
}
break;
}
case SymbolKind.NamedType:
{
var count = methods.Count;
((NamedTypeSymbol)nsOrType.NamespaceOrType).GetExtensionMethods(
methods,
name,
arity,
options
);
// If we found any extension methods, then consider this using as used.
if (methods.Count != count)
{
MarkImportDirective(nsOrType.UsingDirective, callerIsSemanticModel);
seenStaticClassWithExtensionMethods = true;
}
break;
}
}
}
if (seenNamespaceWithExtensionMethods && seenStaticClassWithExtensionMethods)
{
methods.RemoveDuplicates();
}
}
protected override void AddLookupSymbolsInfoInSingleBinder(LookupSymbolsInfo result, LookupOptions options, Binder originalBinder)
{
if (CanConsiderTypeParameters(options))
{
foreach (var parameter in _typeArguments)
{
if (originalBinder.CanAddLookupSymbolInfo(parameter.TypeSymbol, options, result, null))
{
result.AddSymbol(parameter.TypeSymbol, parameter.Name, 0);
}
}
}
}
protected override void AddLookupSymbolsInfoInSingleBinder(LookupSymbolsInfo result, LookupOptions options, Binder originalBinder)
{
if (options.CanConsiderLocals())
{
foreach (var parameter in _parameters)
{
if (originalBinder.CanAddLookupSymbolInfo(parameter, options, result, null))
{
result.AddSymbol(parameter, parameter.Name, 0);
}
}
}
}
private void AppendSymbolsWithNameAndArity(
ArrayBuilder<Symbol> results,
string name,
int arity,
Binder binder,
NamespaceOrTypeSymbol container,
LookupOptions options)
{
Debug.Assert(results != null);
// Don't need to de-dup since AllMethodsOnArityZero can't be set at this point (not exposed in CommonLookupOptions).
Debug.Assert((options & LookupOptions.AllMethodsOnArityZero) == 0);
var lookupResult = LookupResult.GetInstance();
HashSet<DiagnosticInfo> useSiteDiagnostics = null;
binder.LookupSymbolsSimpleName(
lookupResult,
container,
name,
arity,
basesBeingResolved: null,
options: options & ~LookupOptions.IncludeExtensionMethods,
diagnose: false,
useSiteDiagnostics: ref useSiteDiagnostics);
if (lookupResult.IsMultiViable)
{
if (lookupResult.Symbols.Any(t => t.Kind == SymbolKind.NamedType || t.Kind == SymbolKind.Namespace || t.Kind == SymbolKind.ErrorType))
{
// binder.ResultSymbol is defined only for type/namespace lookups
bool wasError;
var diagnostics = DiagnosticBag.GetInstance(); // client code never expects a null diagnostic bag.
Symbol singleSymbol = binder.ResultSymbol(lookupResult, name, arity, this.Root, diagnostics, true, out wasError, container, options);
diagnostics.Free();
if (!wasError)
{
results.Add(singleSymbol);
}
else
{
results.AddRange(lookupResult.Symbols);
}
}
else
{
results.AddRange(lookupResult.Symbols);
}
}
lookupResult.Free();
}
private static void AddAliasSymbolToResult(LookupSymbolsInfo result, AliasSymbol aliasSymbol, LookupOptions options, Binder originalBinder)
{
var targetSymbol = aliasSymbol.GetAliasTarget(basesBeingResolved: null);
if (originalBinder.CanAddLookupSymbolInfo(targetSymbol, options, result, accessThroughType: null, aliasSymbol: aliasSymbol))
{
result.AddSymbol(aliasSymbol, aliasSymbol.Name, 0);
}
}
internal static void AddLookupSymbolsInfoInUsings(
ImmutableArray <NamespaceOrTypeAndUsingDirective> usings, Binder binder, LookupSymbolsInfo result, LookupOptions options)
{
Debug.Assert(!options.CanConsiderNamespaces());
// look in all using namespaces
foreach (var namespaceSymbol in usings)
{
foreach (var member in namespaceSymbol.NamespaceOrType.GetMembersUnordered())
{
if (binder.CanAddLookupSymbolInfo(member, options, null))
{
result.AddSymbol(member, member.Name, member.GetArity());
}
}
}
}
internal override void LookupSymbolsInSingleBinder(LookupResult result, string symbolId, LookupOptions options, Binder originalBinder, bool diagnose)
{
if (options.CanConsiderCatalogues())
{
originalBinder.CheckViability(result, NamespaceSymbol.Catalogues, symbolId, options, diagnose);
}
}
private Binder XSLookupSymbolsInternal(
LookupResult result, string name, int arity, ConsList <Symbol> basesBeingResolved, LookupOptions options, bool diagnose, ref HashSet <DiagnosticInfo> useSiteDiagnostics)
{
Debug.Assert(result.IsClear);
Debug.Assert(options.AreValid());
// X# looks for functions first
//if (Compilation.Options.HasRuntime)
{
// check for function calls method calls outside the current class
bool check = (options.HasFlag(LookupOptions.MustNotBeInstance) && !options.HasFlag(LookupOptions.MustNotBeMethod));
if (check)
{
var funcOptions = options;
funcOptions |= LookupOptions.MustBeInvocableIfMember;
Binder scope = this;
while (scope != null)
{
if (scope is InContainerBinder && scope.ContainingType == null) // at the namespace level, so outside of all types
{
scope.LookupSymbolsInSingleBinder(result, name, arity, basesBeingResolved, funcOptions, this, diagnose, ref useSiteDiagnostics);
FilterResults(result, options);
if (!result.IsClear)
{
break;
}
}
scope = scope.Next;
}
}
}
LookupResult functionResults = LookupResult.GetInstance();
if (!result.IsClear)
{
foreach (var symbol in result.Symbols)
{
if (symbol is MethodSymbol)
{
var ms = symbol as MethodSymbol;
if (ms.IsStatic && ms.ContainingType.Name.EndsWith("Functions", XSharpString.Comparison))
{
SingleLookupResult single = new SingleLookupResult(LookupResultKind.Viable, ms, null);
functionResults.MergeEqual(single);
}
}
}
result.Clear();
}
Binder binder = null;
for (var scope = this; scope != null && !result.IsMultiViable; scope = scope.Next)
{
if (binder != null)
{
var tmp = LookupResult.GetInstance();
scope.LookupSymbolsInSingleBinder(tmp, name, arity, basesBeingResolved, options, this, diagnose, ref useSiteDiagnostics);
FilterResults(tmp, options);
result.MergeEqual(tmp);
tmp.Free();
}
else
{
scope.LookupSymbolsInSingleBinder(result, name, arity, basesBeingResolved, options, this, diagnose, ref useSiteDiagnostics);
FilterResults(result, options);
if (!result.IsClear)
{
binder = scope;
}
}
}
if (!functionResults.IsClear)
{
// compare the function results with the overall results found
// create a list of functions and methods
// function first and then the methods
LookupResult mergedResults = LookupResult.GetInstance();
mergedResults.MergeEqual(functionResults);
// now add the symbols from result that do not exist
for (int j = 0; j < result.Symbols.Count; j++)
{
var sym = result.Symbols[j];
var found = false;
for (int i = 0; i < mergedResults.Symbols.Count; i++)
{
if (sym == mergedResults.Symbols[i])
{
found = true;
break;
}
}
if (!found)
{
SingleLookupResult single = new SingleLookupResult(LookupResultKind.Viable, sym, null);
mergedResults.MergeEqual(single);
}
}
result.Clear();
result.MergeEqual(mergedResults);
}
// C563 Make sure the error is generated for Inaccessible types.
if (!result.IsClear && result.Kind == LookupResultKind.Inaccessible && result.Error != null)
{
// we only want to add this for internal fields (globals)
if (result.Symbols[0].Kind == SymbolKind.Field)
{
if (useSiteDiagnostics == null)
{
useSiteDiagnostics = new HashSet <DiagnosticInfo>();
}
useSiteDiagnostics.Add(result.Error);
}
}
return(binder);
}
internal override void GetExtensionMethods(ArrayBuilder <MethodSymbol> methods, string name, int arity, LookupOptions options)
{
foreach (NamespaceSymbol namespaceSymbol in _namespacesToMerge)
{
namespaceSymbol.GetExtensionMethods(methods, name, arity, options);
}
}
private static bool OnlyOneBitSet(LookupOptions o)
{
return (o & (o - 1)) == 0;
}
internal override void AddLookupSymbolsInfoInSingleBinder(LookupSymbolsInfo result, LookupOptions options, Binder originalBinder)
{
if (CanConsiderTypeParameters(options))
{
foreach (var kvp in TypeParameterMap)
{
foreach (TypeParameterSymbol typeParameter in kvp.Value)
{
// In any context where this binder applies, the type parameters are always viable/speakable.
Debug.Assert(!result.CanBeAdded(typeParameter.Name) || originalBinder.CanAddLookupSymbolInfo(typeParameter, options, result, null));
result.AddSymbol(typeParameter, kvp.Key, 0);
}
}
}
}
internal override void GetCandidateExtensionMethods(
bool searchUsingsNotNamespace,
ArrayBuilder<MethodSymbol> methods,
string name,
int arity,
LookupOptions options,
bool isCallerSemanticModel)
{
if (searchUsingsNotNamespace)
{
this.GetImports().LookupExtensionMethodsInUsings(methods, name, arity, options, isCallerSemanticModel);
}
else
{
if (_container.Kind == SymbolKind.Namespace)
{
((NamespaceSymbol)_container).GetExtensionMethods(methods, name, arity, options);
}
else if (((NamedTypeSymbol)_container).IsScriptClass)
{
for (var submission = this.Compilation; submission != null; submission = submission.PreviousSubmission)
{
var scriptClass = submission.ScriptClass;
if ((object)scriptClass != null)
{
scriptClass.GetExtensionMethods(methods, name, arity, options);
}
}
}
}
}
private static bool OnlyOneBitSet(LookupOptions o)
{
return((o & (o - 1)) == 0);
}
/// <summary>
/// Look for any symbols in scope with the given name and arity.
/// </summary>
/// <remarks>
/// Makes a second attempt if the results are not viable, in order to produce more detailed failure information (symbols and diagnostics).
/// </remarks>
private Binder XSLookupSymbolsWithFallback(LookupResult result, string name, int arity, ref HashSet <DiagnosticInfo> useSiteDiagnostics, ConsList <Symbol> basesBeingResolved = null, LookupOptions options = LookupOptions.Default)
{
Debug.Assert(options.AreValid());
// don't create diagnosis instances unless lookup fails
var binder = this.LookupSymbolsInternal(result, name, arity, basesBeingResolved, options, diagnose: false, useSiteDiagnostics: ref useSiteDiagnostics);
FilterResults(result, options);
if (result.Kind != LookupResultKind.Viable && result.Kind != LookupResultKind.Empty)
{
result.Clear();
// retry to get diagnosis
var otherBinder = this.LookupSymbolsInternal(result, name, arity, basesBeingResolved, options, diagnose: true, useSiteDiagnostics: ref useSiteDiagnostics);
Debug.Assert(binder == otherBinder);
}
Debug.Assert(result.IsMultiViable || result.IsClear || result.Error != null);
return(binder);
}
internal static bool CanConsiderLocals(this LookupOptions options)
{
return((options & (LookupOptions.NamespaceAliasesOnly | LookupOptions.NamespacesOrTypesOnly | LookupOptions.LabelsOnly)) == 0);
}
protected override void AddLookupSymbolsInfoInSingleBinder(LookupSymbolsInfo result, LookupOptions options, Binder originalBinder)
{
if (options.CanConsiderMembers())
{
foreach (var kvp in _parameterMap)
{
result.AddSymbol(null, kvp.Key, 0);
}
}
}
internal override void GetCandidateExtensionMethods(
bool searchUsingsNotNamespace,
ArrayBuilder<MethodSymbol> methods,
string name,
int arity,
LookupOptions options,
Binder originalBinder)
{
if (searchUsingsNotNamespace)
{
this.GetImports(basesBeingResolved: null).LookupExtensionMethodsInUsings(methods, name, arity, options, originalBinder);
}
else if (_container?.Kind == SymbolKind.Namespace)
{
((NamespaceSymbol)_container).GetExtensionMethods(methods, name, arity, options);
}
else if (IsSubmissionClass)
{
for (var submission = this.Compilation; submission != null; submission = submission.PreviousSubmission)
{
submission.ScriptClass?.GetExtensionMethods(methods, name, arity, options);
}
}
}
protected override void AddLookupSymbolsInfoInSingleBinder(LookupSymbolsInfo result, LookupOptions options, Binder originalBinder)
{
if (options.CanConsiderMembers())
{
foreach (var kvp in _parameterMap)
{
result.AddSymbol(null, kvp.Key, 0);
}
}
}
/// <summary>
/// Gets the available named symbols in the context of the specified location and optional
/// container. Only symbols that are accessible and visible from the given location are
/// returned.
/// </summary>
/// <param name="position">The character position for determining the enclosing declaration
/// scope and accessibility.</param>
/// <param name="container">The container to search for symbols within. If null then the
/// enclosing declaration scope around position is used.</param>
/// <param name="name">The name of the symbol to find. If null is specified then symbols
/// with any names are returned.</param>
/// <param name="options">Additional options that affect the lookup process.</param>
/// <param name="useBaseReferenceAccessibility">Ignore 'throughType' in accessibility checking.
/// Used in checking accessibility of symbols accessed via 'MyBase' or 'base'.</param>
/// <remarks>
/// The "position" is used to determine what variables are visible and accessible. Even if
/// "container" is specified, the "position" location is significant for determining which
/// members of "containing" are accessible.
/// </remarks>
/// <exception cref="ArgumentException">Throws an argument exception if the passed lookup options are invalid.</exception>
private ImmutableArray<Symbol> LookupSymbolsInternal(
int position,
NamespaceOrTypeSymbol container,
string name,
LookupOptions options,
bool useBaseReferenceAccessibility)
{
Debug.Assert((options & LookupOptions.UseBaseReferenceAccessibility) == 0, "Use the useBaseReferenceAccessibility parameter.");
if (useBaseReferenceAccessibility)
{
options |= LookupOptions.UseBaseReferenceAccessibility;
}
Debug.Assert(!options.IsAttributeTypeLookup()); // Not exposed publicly.
options.ThrowIfInvalid();
SyntaxToken token;
position = CheckAndAdjustPosition(position, out token);
if ((object)container == null || container.Kind == SymbolKind.Namespace)
{
options &= ~LookupOptions.IncludeExtensionMethods;
}
var binder = GetEnclosingBinder(position);
if (binder == null)
{
return ImmutableArray<Symbol>.Empty;
}
if (useBaseReferenceAccessibility)
{
Debug.Assert((object)container == null);
TypeSymbol containingType = binder.ContainingType;
TypeSymbol baseType = null;
// For a script class or a submission class base should have no members.
if ((object)containingType != null && containingType.Kind == SymbolKind.NamedType && ((NamedTypeSymbol)containingType).IsScriptClass)
{
return ImmutableArray<Symbol>.Empty;
}
if ((object)containingType == null || (object)(baseType = containingType.BaseTypeNoUseSiteDiagnostics) == null)
{
throw new ArgumentException(
"Not a valid position for a call to LookupBaseMembers (must be in a type with a base type)",
nameof(position));
}
container = baseType;
}
if (!binder.IsInMethodBody &&
(options & (LookupOptions.NamespaceAliasesOnly | LookupOptions.NamespacesOrTypesOnly | LookupOptions.LabelsOnly)) == 0)
{
// Method type parameters are not in scope outside a method
// body unless the position is either:
// a) in a type-only context inside an expression, or
// b) inside of an XML name attribute in an XML doc comment.
var parentExpr = token.Parent as ExpressionSyntax;
if (parentExpr != null && !(parentExpr.Parent is XmlNameAttributeSyntax) && !SyntaxFacts.IsInTypeOnlyContext(parentExpr))
{
options |= LookupOptions.MustNotBeMethodTypeParameter;
}
}
var info = LookupSymbolsInfo.GetInstance();
if ((object)container == null)
{
binder.AddLookupSymbolsInfo(info, options);
}
else
{
binder.AddMemberLookupSymbolsInfo(info, container, options, binder);
}
var results = ArrayBuilder<Symbol>.GetInstance(info.Count);
if (name == null)
{
// If they didn't provide a name, then look up all names and associated arities
// and find all the corresponding symbols.
foreach (string foundName in info.Names)
{
AppendSymbolsWithName(results, foundName, binder, container, options, info);
}
}
else
{
// They provided a name. Find all the arities for that name, and then look all of those up.
AppendSymbolsWithName(results, name, binder, container, options, info);
}
info.Free();
if ((options & LookupOptions.IncludeExtensionMethods) != 0)
{
var lookupResult = LookupResult.GetInstance();
options |= LookupOptions.AllMethodsOnArityZero;
options &= ~LookupOptions.MustBeInstance;
HashSet<DiagnosticInfo> useSiteDiagnostics = null;
binder.LookupExtensionMethods(lookupResult, name, 0, options, ref useSiteDiagnostics);
if (lookupResult.IsMultiViable)
{
TypeSymbol containingType = (TypeSymbol)container;
foreach (MethodSymbol extensionMethod in lookupResult.Symbols)
{
var reduced = extensionMethod.ReduceExtensionMethod(containingType);
if ((object)reduced != null)
{
results.Add(reduced);
}
}
}
lookupResult.Free();
}
ImmutableArray<Symbol> sealedResults = results.ToImmutableAndFree();
return name == null
? FilterNotReferencable(sealedResults)
: sealedResults;
}
internal override void GetCandidateExtensionMethods(
bool searchUsingsNotNamespace,
ArrayBuilder<MethodSymbol> methods,
string name,
int arity,
LookupOptions options,
bool isCallerSemanticModel)
{
if (searchUsingsNotNamespace)
{
this.GetImports().LookupExtensionMethodsInUsings(methods, name, arity, options, isCallerSemanticModel);
}
else
{
if (_container.Kind == SymbolKind.Namespace)
{
((NamespaceSymbol)_container).GetExtensionMethods(methods, name, arity, options);
}
}
}
private static void AddLookupSymbolsInfoInUsings(
ImmutableArray <NamespaceOrTypeAndUsingDirective> usings, LookupSymbolsInfo result, LookupOptions options, Binder originalBinder)
{
if (originalBinder.Flags.Includes(BinderFlags.InScriptUsing))
{
return;
}
Debug.Assert(!options.CanConsiderNamespaces());
// look in all using namespaces
foreach (var namespaceSymbol in usings)
{
foreach (var member in namespaceSymbol.NamespaceOrType.GetMembersUnordered())
{
if (IsValidLookupCandidateInUsings(member) && originalBinder.CanAddLookupSymbolInfo(member, options, result, null))
{
result.AddSymbol(member, member.Name, member.GetArity());
}
}
}
}
protected sealed override void AddLookupSymbolsInfoInSingleBinder(LookupSymbolsInfo info, LookupOptions options, Binder originalBinder)
{
throw new NotImplementedException();
}
protected override void AddLookupSymbolsInfoInSingleBinder(LookupSymbolsInfo result, LookupOptions options, Binder originalBinder)
{
this.AddMemberLookupSymbolsInfo(result, _container, options, originalBinder);
// if we are looking only for labels we do not need to search through the imports
if (!_container.IsSubmissionClass && ((options & LookupOptions.LabelsOnly) == 0))
{
var imports = GetImports(basesBeingResolved: null);
imports.AddLookupSymbolsInfoInAliases(this, result, options);
// Add types within namespaces imported through usings, but don't add nested namespaces.
LookupOptions usingOptions = (options & ~(LookupOptions.NamespaceAliasesOnly | LookupOptions.NamespacesOrTypesOnly)) | LookupOptions.MustNotBeNamespace;
Imports.AddLookupSymbolsInfoInUsings(imports.Usings, this, result, usingOptions);
}
}
protected override void AddLookupSymbolsInfoInSingleBinder(LookupSymbolsInfo result, LookupOptions options, Binder originalBinder)
{
if (_container != null)
{
this.AddMemberLookupSymbolsInfo(result, _container, options, originalBinder);
}
// If we are looking only for labels we do not need to search through the imports.
// Submission imports are handled by AddMemberLookupSymbolsInfo (above).
if (!IsSubmissionClass && ((options & LookupOptions.LabelsOnly) == 0))
{
var imports = GetImports(basesBeingResolved: null);
imports.AddLookupSymbolsInfo(result, options, originalBinder);
}
}
protected override void AddLookupSymbolsInfoInSingleBinder(LookupSymbolsInfo result, LookupOptions options, Binder originalBinder)
{
if (_container != null)
{
this.AddMemberLookupSymbolsInfo(result, _container, options, originalBinder);
}
// If we are looking only for labels we do not need to search through the imports.
// Submission imports are handled by AddMemberLookupSymbolsInfo (above).
if (!IsSubmissionClass && ((options & LookupOptions.LabelsOnly) == 0))
{
var imports = GetImports(basesBeingResolved: null);
imports.AddLookupSymbolsInfo(result, options, originalBinder);
}
}
private void AppendSymbolsWithName(ArrayBuilder<Symbol> results, string name, Binder binder, NamespaceOrTypeSymbol container, LookupOptions options, LookupSymbolsInfo info)
{
LookupSymbolsInfo.IArityEnumerable arities;
Symbol uniqueSymbol;
if (info.TryGetAritiesAndUniqueSymbol(name, out arities, out uniqueSymbol))
{
if ((object)uniqueSymbol != null)
{
// This name mapped to something unique. We don't need to proceed
// with a costly lookup. Just add it straight to the results.
results.Add(uniqueSymbol);
}
else
{
// The name maps to multiple symbols. Actually do a real lookup so
// that we will properly figure out hiding and whatnot.
if (arities != null)
{
foreach (var arity in arities)
{
this.AppendSymbolsWithNameAndArity(results, name, arity, binder, container, options);
}
}
else
{
//non-unique symbol with non-zero arity doesn't seem possible.
this.AppendSymbolsWithNameAndArity(results, name, 0, binder, container, options);
}
}
}
}
internal override void LookupSymbolsInSingleBinder(
LookupResult result, string name, int arity, ConsList <TypeSymbol> basesBeingResolved, LookupOptions options, Binder originalBinder, bool diagnose, ref HashSet <DiagnosticInfo> useSiteDiagnostics)
{
if ((options & (LookupOptions.NamespaceAliasesOnly | LookupOptions.MustBeInvocableIfMember)) != 0)
{
return;
}
Debug.Assert(result.IsClear);
foreach (ParameterSymbol parameter in _parameters)
{
if (parameter.Name == name)
{
result.MergeEqual(originalBinder.CheckViability(parameter, arity, options, null, diagnose, ref useSiteDiagnostics));
}
}
}
internal static bool CanConsiderNamespaces(this LookupOptions options)
{
return((options & (LookupOptions.MustNotBeNamespace | LookupOptions.MustBeInvocableIfMember | LookupOptions.MustBeInstance | LookupOptions.LabelsOnly)) == 0);
}
public IMember LookupNameInScopes(string name, out IScope scope, out IVariable v, LookupOptions options)
{
scope = null;
var classMembers = (options & LookupOptions.ClassMembers) == LookupOptions.ClassMembers;
switch (options)
{
case LookupOptions.All:
case LookupOptions.Normal:
// Regular lookup: all scopes and builtins.
for (var s = CurrentScope; s != null; s = (Scope)s.OuterScope)
{
if (s.Variables.TryGetVariable(name, out var v1) && (!v1.IsClassMember || classMembers))
{
scope = s;
break;
}
}
break;
case LookupOptions.Global:
case LookupOptions.Global | LookupOptions.Builtins:
// Global scope only.
if (GlobalScope.Variables.Contains(name))
{
scope = GlobalScope;
}
break;
case LookupOptions.Nonlocal:
case LookupOptions.Nonlocal | LookupOptions.Builtins:
// All scopes but current and global ones.
for (var s = CurrentScope.OuterScope as Scope; s != null && s != GlobalScope; s = (Scope)s.OuterScope)
{
if (s.Variables.Contains(name))
{
scope = s;
break;
}
}
break;
case LookupOptions.Local:
case LookupOptions.Local | LookupOptions.Builtins:
// Just the current scope
if (CurrentScope.Variables.Contains(name))
{
scope = CurrentScope;
}
break;
default:
Debug.Fail("Unsupported name lookup combination");
break;
}
v = scope?.Variables[name];
var value = v?.Value;
if (value == null && options.HasFlag(LookupOptions.Builtins))
{
var builtins = Interpreter.ModuleResolution.BuiltinsModule;
value = Interpreter.ModuleResolution.BuiltinsModule.GetMember(name);
if (Module != builtins && options.HasFlag(LookupOptions.Builtins))
{
value = builtins.GetMember(name);
scope = builtins.GlobalScope;
}
}
return(value);
}
internal override void LookupSymbolsInSingleBinder(
LookupResult result, string name, int arity, ConsList<Symbol> basesBeingResolved, LookupOptions options, Binder originalBinder, bool diagnose, ref HashSet<DiagnosticInfo> useSiteDiagnostics)
{
Debug.Assert(result.IsClear);
if (_container.IsSubmissionClass)
{
this.LookupMembersInternal(result, _container, name, arity, basesBeingResolved, options, originalBinder, diagnose, ref useSiteDiagnostics);
return;
}
var imports = GetImports(basesBeingResolved);
// first lookup members of the namespace
if ((options & LookupOptions.NamespaceAliasesOnly) == 0)
{
this.LookupMembersInternal(result, _container, name, arity, basesBeingResolved, options, originalBinder, diagnose, ref useSiteDiagnostics);
if (result.IsMultiViable)
{
// symbols cannot conflict with using alias names
if (arity == 0 && imports.IsUsingAlias(name, originalBinder.IsSemanticModelBinder))
{
CSDiagnosticInfo diagInfo = new CSDiagnosticInfo(ErrorCode.ERR_ConflictAliasAndMember, name, _container);
var error = new ExtendedErrorTypeSymbol((NamespaceOrTypeSymbol)null, name, arity, diagInfo, unreported: true);
result.SetFrom(LookupResult.Good(error)); // force lookup to be done w/ error symbol as result
}
return;
}
}
// next try using aliases or symbols in imported namespaces
imports.LookupSymbol(originalBinder, result, name, arity, basesBeingResolved, options, diagnose, ref useSiteDiagnostics);
}
internal static bool IsAttributeTypeLookup(this LookupOptions options)
{
return((options & LookupOptions.AttributeTypeOnly) == LookupOptions.AttributeTypeOnly);
}
internal override void GetExtensionMethods(ArrayBuilder<MethodSymbol> methods, string name, int arity, LookupOptions options)
{
foreach (NamespaceSymbol namespaceSymbol in namespacesToMerge)
{
namespaceSymbol.GetExtensionMethods(methods, name, arity, options);
}
}
protected override void LookupSymbolsInSingleBinder(
LookupResult result, string name, int arity, ConsList <Symbol> basesBeingResolved, LookupOptions options, Binder originalBinder, bool diagnose, ref HashSet <DiagnosticInfo> useSiteDiagnostics)
{
if ((options & (LookupOptions.NamespaceAliasesOnly | LookupOptions.MustBeInvocableIfMember)) != 0)
{
return;
}
Debug.Assert(result.IsClear);
var count = parameterMap.GetCountForKey(name);
if (count == 1)
{
ParameterSymbol p;
parameterMap.TryGetSingleValue(name, out p);
result.MergeEqual(originalBinder.CheckViability(p, arity, options, null, diagnose, ref useSiteDiagnostics));
}
else if (count > 1)
{
var parameters = parameterMap[name];
foreach (var sym in parameters)
{
result.MergeEqual(originalBinder.CheckViability(sym, arity, options, null, diagnose, ref useSiteDiagnostics));
}
}
}
