internal static TokenRenameInfo GetTokenRenameInfo(
ISemanticFactsService semanticFacts,
SemanticModel semanticModel,
SyntaxToken token,
CancellationToken cancellationToken)
{
var symbol = semanticFacts.GetDeclaredSymbol(semanticModel, token, cancellationToken);
if (symbol != null)
{
return(TokenRenameInfo.CreateSingleSymbolTokenInfo(symbol));
}
var symbolInfo = semanticModel.GetSymbolInfo(token, cancellationToken);
if (symbolInfo.Symbol != null)
{
if (symbolInfo.Symbol.IsTupleType())
{
return(TokenRenameInfo.NoSymbolsTokenInfo);
}
return(TokenRenameInfo.CreateSingleSymbolTokenInfo(symbolInfo.Symbol));
}
if (symbolInfo.CandidateReason == CandidateReason.MemberGroup && symbolInfo.CandidateSymbols.Any())
{
// This is a reference from a nameof expression. Allow the rename but set the RenameOverloads option
return(TokenRenameInfo.CreateMemberGroupTokenInfo(symbolInfo.CandidateSymbols));
}
return(TokenRenameInfo.NoSymbolsTokenInfo);
}
internal static TokenRenameInfo GetTokenRenameInfo(
ISemanticFactsService semanticFacts,
SemanticModel semanticModel,
SyntaxToken token,
CancellationToken cancellationToken
)
{
var symbol = semanticFacts.GetDeclaredSymbol(semanticModel, token, cancellationToken);
if (symbol != null)
{
return(TokenRenameInfo.CreateSingleSymbolTokenInfo(symbol));
}
var symbolInfo = semanticModel.GetSymbolInfo(token, cancellationToken);
if (symbolInfo.Symbol != null)
{
if (symbolInfo.Symbol.IsTupleType())
{
return(TokenRenameInfo.NoSymbolsTokenInfo);
}
return(TokenRenameInfo.CreateSingleSymbolTokenInfo(symbolInfo.Symbol));
}
if (
symbolInfo.CandidateReason == CandidateReason.MemberGroup &&
symbolInfo.CandidateSymbols.Any()
)
{
// This is a reference from a nameof expression. Allow the rename but set the RenameOverloads option
return(TokenRenameInfo.CreateMemberGroupTokenInfo(symbolInfo.CandidateSymbols));
}
if (
RenameLocation.ShouldRename(symbolInfo.CandidateReason) &&
symbolInfo.CandidateSymbols.Length == 1
)
{
// TODO(cyrusn): We're allowing rename here, but we likely should let the user
// know that there is an error in the code and that rename results might be
// inaccurate.
return(TokenRenameInfo.CreateSingleSymbolTokenInfo(symbolInfo.CandidateSymbols[0]));
}
return(TokenRenameInfo.NoSymbolsTokenInfo);
}
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));
}
internal static TokenRenameInfo GetTokenRenameInfo(
ISemanticFactsService semanticFacts,
SemanticModel semanticModel,
SyntaxToken token,
CancellationToken cancellationToken)
{
var symbol = semanticFacts.GetDeclaredSymbol(semanticModel, token, cancellationToken);
if (symbol != null)
{
return TokenRenameInfo.CreateSingleSymbolTokenInfo(symbol);
}
var symbolInfo = semanticModel.GetSymbolInfo(token, cancellationToken);
if (symbolInfo.Symbol != null)
{
return TokenRenameInfo.CreateSingleSymbolTokenInfo(symbolInfo.Symbol);
}
if (symbolInfo.CandidateReason == CandidateReason.MemberGroup && symbolInfo.CandidateSymbols.Any())
{
// This is a reference from a nameof expression. Allow the rename but set the RenameOverloads option
return TokenRenameInfo.CreateMemberGroupTokenInfo(symbolInfo.CandidateSymbols);
}
return TokenRenameInfo.NoSymbolsTokenInfo;
}
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);
}
}
}
internal static TokenRenameInfo GetTokenRenameInfo(
ISemanticFactsService semanticFacts,
SemanticModel semanticModel,
SyntaxToken token,
CancellationToken cancellationToken)
{
var symbol = semanticFacts.GetDeclaredSymbol(semanticModel, token, cancellationToken);
if (symbol != null)
{
return TokenRenameInfo.CreateSingleSymbolTokenInfo(symbol);
}
var symbolInfo = semanticModel.GetSymbolInfo(token, cancellationToken);
if (symbolInfo.Symbol != null)
{
if (symbolInfo.Symbol.IsTupleType())
{
return TokenRenameInfo.NoSymbolsTokenInfo;
}
return TokenRenameInfo.CreateSingleSymbolTokenInfo(symbolInfo.Symbol);
}
if (symbolInfo.CandidateReason == CandidateReason.MemberGroup && symbolInfo.CandidateSymbols.Any())
{
// This is a reference from a nameof expression. Allow the rename but set the RenameOverloads option
return TokenRenameInfo.CreateMemberGroupTokenInfo(symbolInfo.CandidateSymbols);
}
if (RenameLocation.ShouldRename(symbolInfo.CandidateReason) &&
symbolInfo.CandidateSymbols.Length == 1)
{
// TODO(cyrusn): We're allowing rename here, but we likely should let the user
// know that there is an error in the code and that rename results might be
// inaccurate.
return TokenRenameInfo.CreateSingleSymbolTokenInfo(symbolInfo.CandidateSymbols[0]);
}
return TokenRenameInfo.NoSymbolsTokenInfo;
}