private static TokenSemanticInfo GetSemanticInfo(
SemanticModel semanticModel,
ISemanticFactsService semanticFacts,
ISyntaxFactsService syntaxFacts,
SyntaxToken token,
CancellationToken cancellationToken)
{
var aliasSymbol = semanticModel.GetAliasInfo(token.Parent, cancellationToken);
var bindableParent = syntaxFacts.GetBindableParent(token);
var type = semanticModel.GetTypeInfo(bindableParent, cancellationToken).Type;
var declaredSymbol = MapSymbol(semanticFacts.GetDeclaredSymbol(semanticModel, token, cancellationToken), type);
var allSymbols = semanticModel.GetSymbolInfo(bindableParent, cancellationToken)
.GetBestOrAllSymbols()
.WhereAsArray(s => !s.Equals(declaredSymbol))
.SelectAsArray(s => MapSymbol(s, type));
// NOTE(cyrusn): This is a workaround to how the semantic model binds and returns
// information for VB event handlers. Namely, if you have:
//
// Event X]()
// Sub Foo()
// Dim y = New $$XEventHandler(AddressOf bar)
// End Sub
//
// Only GetTypeInfo will return any information for XEventHandler. So, in this
// case, we upgrade the type to be the symbol we return.
if (type != null && allSymbols.Length == 0)
{
if (type.Kind == SymbolKind.NamedType)
{
var namedType = (INamedTypeSymbol)type;
if (namedType.TypeKind == TypeKind.Delegate ||
namedType.AssociatedSymbol != null)
{
allSymbols = ImmutableArray.Create <ISymbol>(type);
type = null;
}
}
}
return(new TokenSemanticInfo(declaredSymbol, aliasSymbol, allSymbols, type));
}
private static TokenSemanticInfo GetSemanticInfo(
SemanticModelBase semanticModel,
ISemanticFactsService semanticFacts,
ISyntaxFactsService syntaxFacts,
ISyntaxToken token,
CancellationToken cancellationToken)
{
//var aliasSymbol = semanticModel.GetAliasInfo(token.Parent, cancellationToken);
IAliasSymbol aliasSymbol = null;
var bindableParent = syntaxFacts.GetBindableParent(token);
var type = semanticModel.GetTypeInfo(bindableParent).Type;
var declaredSymbol = semanticFacts.GetDeclaredSymbol(semanticModel, token, cancellationToken);
var allSymbols = semanticModel.GetSymbolInfo(bindableParent)
.GetBestOrAllSymbols()
.WhereAsArray(s => !s.Equals(declaredSymbol))
.SelectAsArray(s => s);
return(new TokenSemanticInfo(declaredSymbol, aliasSymbol, allSymbols, type));
}
private static Func <SyntaxToken, SyntaxNode> GetFindParentNodeFunction(ISyntaxFactsService syntaxFacts)
{
return(t => syntaxFacts.GetBindableParent(t));
}
private static IEnumerable <ISymbol> GetSymbolsEnumerable(
SemanticModel semanticModel,
ISemanticFactsService semanticFacts,
ISyntaxFactsService syntaxFacts,
SyntaxToken token,
bool bindLiteralsToUnderlyingType,
CancellationToken cancellationToken)
{
var declaredSymbol = semanticFacts.GetDeclaredSymbol(semanticModel, token, cancellationToken);
if (declaredSymbol != null)
{
yield return(declaredSymbol);
yield break;
}
var aliasInfo = semanticModel.GetAliasInfo(token.Parent, cancellationToken);
if (aliasInfo != null)
{
yield return(aliasInfo);
}
var bindableParent = syntaxFacts.GetBindableParent(token);
var allSymbols = semanticModel.GetSymbolInfo(bindableParent, cancellationToken).GetBestOrAllSymbols().ToList();
var type = semanticModel.GetTypeInfo(bindableParent, cancellationToken).Type;
if (type != null && allSymbols.Count == 0)
{
if ((bindLiteralsToUnderlyingType && syntaxFacts.IsLiteral(token)) ||
syntaxFacts.IsAwaitKeyword(token))
{
yield return(type);
}
if (type.Kind == SymbolKind.NamedType)
{
var namedType = (INamedTypeSymbol)type;
if (namedType.TypeKind == TypeKind.Delegate ||
namedType.AssociatedSymbol != null)
{
yield return(type);
}
}
}
foreach (var symbol in allSymbols)
{
if (symbol.IsThisParameter() && type != null)
{
yield return(type);
}
else if (symbol.IsFunctionValue())
{
var method = symbol.ContainingSymbol as IMethodSymbol;
if (method != null)
{
if (method.AssociatedSymbol != null)
{
yield return(method.AssociatedSymbol);
}
else
{
yield return(method);
}
}
else
{
yield return(symbol);
}
}
else
{
yield return(symbol);
}
}
}