879Debug.Assert(methodGroup.ResultKind != LookupResultKind.Viable); 910var resultKind = (valueKind == BindValueKind.RValue || valueKind == BindValueKind.RValueOrMethodGroup) ? 911LookupResultKind.NotAValue : 912LookupResultKind.NotAVariable;

87LookupResultKind.Empty,

169LookupResultKind resultKind = LookupResultKind.Viable; 229LookupResultKind.Inaccessible : 230LookupResultKind.OverloadResolutionFailure); 281hasErrors: resultKind != LookupResultKind.Viable); 523var badLHS = BadExpression(nameSyntax, lookupResultKind: LookupResultKind.Empty); 529LookupResultKind resultKind; 549Debug.Assert(resultKind == LookupResultKind.Viable || wasError); 594private Symbol BindNamedAttributeArgumentName(AttributeArgumentSyntax namedArgument, NamedTypeSymbol attributeType, BindingDiagnosticBag diagnostics, out bool wasError, out LookupResultKind resultKind) 663LookupResultKind.NotAVariable, 676LookupResultKind.NotAVariable,

394resultKind: LookupResultKind.Viable, 535resultKind: LookupResultKind.Viable,

1327resultKind: LookupResultKind.Viable).MakeCompilerGenerated(); 1911if (resolution.ResultKind != LookupResultKind.Viable) 2245? new BoundBadExpression(node.WithElement!.Syntax, LookupResultKind.Empty, symbols: [], naturalWithArguments, CreateErrorType())

342if (result.Kind == LookupResultKind.Viable)

958resultKind: LookupResultKind.Viable,

120return BadExpression(syntax, LookupResultKind.Empty, ImmutableArray<Symbol>.Empty); 128return BadExpression(syntax, LookupResultKind.Empty, ImmutableArray<Symbol>.Empty, childNode); 136return BadExpression(syntax, LookupResultKind.Empty, ImmutableArray<Symbol>.Empty, childNodes); 142protected BoundBadExpression BadExpression(SyntaxNode syntax, LookupResultKind lookupResultKind) 150protected BoundBadExpression BadExpression(SyntaxNode syntax, LookupResultKind lookupResultKind, BoundExpression childNode) 158private BoundBadExpression BadExpression(SyntaxNode syntax, LookupResultKind resultKind, ImmutableArray<Symbol> symbols) 171private BoundBadExpression BadExpression(SyntaxNode syntax, LookupResultKind resultKind, ImmutableArray<Symbol> symbols, BoundExpression childNode) 196private BoundBadExpression BadExpression(SyntaxNode syntax, LookupResultKind resultKind, ImmutableArray<Symbol> symbols, ImmutableArray<BoundExpression> childNodes, bool wasCompilerGenerated = false) 218private BoundExpression ToBadExpression(BoundExpression expr, LookupResultKind resultKind = LookupResultKind.Empty) 221Debug.Assert(resultKind != LookupResultKind.Viable); 615return BadExpression(node, LookupResultKind.NotAValue); 622return BadExpression(node, LookupResultKind.NotAValue); 893node, LookupResultKind.Empty, ImmutableArray<Symbol>.Empty, ImmutableArray.Create<BoundExpression>(BindToTypeForErrorRecovery(BindValue(node.Expression, BindingDiagnosticBag.Discarded, BindValueKind.RefersToLocation))), 1080argumentSyntax, LookupResultKind.Empty, ImmutableArray<Symbol>.Empty, 1529bool result = lookupResult.Kind != LookupResultKind.Empty; 1587if (type is ErrorTypeSymbol { ResultKind: LookupResultKind.Empty }) 1696if (lookupResult.Kind != LookupResultKind.Empty) 1740resultKind: LookupResultKind.WrongArity, 2055private BoundExpression BindNonMethod(SimpleNameSyntax node, Symbol symbol, BindingDiagnosticBag diagnostics, LookupResultKind resultKind, bool indexed, bool isError) 2515return BadExpression(node, LookupResultKind.NotLabel); 2874if (conversion.ResultKind == LookupResultKind.OverloadResolutionFailure) 3358LookupResultKind.Viable, 4323LookupResultKind.Empty, 4592LookupResultKind.NotCreatable, //in this context, anyway 4631LookupResultKind.Empty, 4963resultKind: LookupResultKind.Empty, 4974resultKind: LookupResultKind.Empty, 5017resultKind: LookupResultKind.Empty, 5174resultKind: LookupResultKind.Viable, 5186resultKind: LookupResultKind.OverloadResolutionFailure, 5311type = new ExtendedErrorTypeSymbol(type, LookupResultKind.NotCreatable, 5321type = new ExtendedErrorTypeSymbol(type, LookupResultKind.NotCreatable, 5339return new BoundBadExpression(syntax, LookupResultKind.Empty, ImmutableArray<Symbol?>.Empty, ImmutableArray<BoundExpression>.Empty, CreateErrorType()); 5463arg.Syntax, LookupResultKind.Empty, symbols: [], 5628return new BoundBadExpression(node, LookupResultKind.NotInvocable, StaticCast<Symbol>.From(type.InstanceConstructors), ImmutableArray.Create(argument), type); 5639sourceDelegate.DelegateInvokeMethod, null, BoundMethodGroupFlags.None, functionType: null, argument, LookupResultKind.Viable); 5675return new BoundBadExpression(node, LookupResultKind.OverloadResolutionFailure, StaticCast<Symbol>.From(type.InstanceConstructors), childNodes, type); 5772return new BoundBadExpression(node, LookupResultKind.NotCreatable, ImmutableArray.Create<Symbol?>(type), children.ToImmutableAndFree(), type) { WasCompilerGenerated = wasCompilerGenerated }; 5940LookupResultKind.Empty, 5960return BindToTypeForErrorRecovery(ToBadExpression(boundExpression, LookupResultKind.NotAValue)); 5998LookupResultKind resultKind; 6101resultKind = LookupResultKind.NotAValue; 6186resultKind = isRhsNestedInitializer ? LookupResultKind.NotAValue : LookupResultKind.NotAVariable; 6211ref LookupResultKind resultKind) 6223resultKind = LookupResultKind.NotAValue; 6253case LookupResultKind.Empty: 6257case LookupResultKind.Inaccessible: 6268return ToBadExpression(boundMember, (valueKind == BindValueKind.RValue) ? LookupResultKind.NotAValue : LookupResultKind.NotAVariable); 6566return BadExpression(elementInitializer, LookupResultKind.NotInvocable); 6607return BadExpression(elementInitializer, LookupResultKind.NotInvocable, ImmutableArray<Symbol>.Empty, boundElementInitializerExpressions); 7041LookupResultKind resultKind; 7046resultKind = LookupResultKind.NotCreatable; 7050resultKind = LookupResultKind.Inaccessible; 7054resultKind = LookupResultKind.OverloadResolutionFailure; 7239return new BoundBadExpression(node, LookupResultKind.OverloadResolutionFailure, ImmutableArray<Symbol>.Empty, children, interfaceType); 8059return new BoundBadExpression(node, LookupResultKind.Ambiguous, lookupResult.Symbols.AsImmutable(), ImmutableArray.Create(AdjustBadExpressionChild(boundLeft)), CreateErrorType(rightName), hasErrors: true); 8080else if (lookupResult.Kind == LookupResultKind.WrongArity) 8090else if (lookupResult.Kind == LookupResultKind.Empty) 8133return BadExpression(node, LookupResultKind.NotAValue, boundLeft); 8277return BindPropertyAccess(syntax, receiver, propertySymbol, diagnostics, LookupResultKind.Viable, hasErrors: false); 8281return new BoundBadExpression(syntax, LookupResultKind.Viable, errorTypeSymbol.CandidateSymbols!, [AdjustBadExpressionChild(receiver)], CreateErrorType()); 8512LookupResultKind lookupKind) 8928result = new MethodGroupResolution(bestProperty, LookupResultKind.Viable, diagnostics.ToReadOnly()); 9099ExtendedErrorTypeSymbol resultSymbol = new ExtendedErrorTypeSymbol(containingSymbol: null, symbols, LookupResultKind.OverloadResolutionFailure, errorInfo, arity); 9100Debug.Assert(lookupResult.Kind == LookupResultKind.Viable); 9118LookupResultKind resultKind, 9297LookupResultKind lookupResult, 9378LookupResultKind lookupResult, 9423ref LookupResultKind resultKind, 9443resultKind = LookupResultKind.StaticInstanceMismatch; 9452resultKind = LookupResultKind.StaticInstanceMismatch; 9477Debug.Assert(result.Kind != LookupResultKind.Empty); 9890return new BoundBadExpression(node, LookupResultKind.Empty, ImmutableArray<Symbol>.Empty, childBoundNodes, CreateErrorType(), hasErrors: true); 10742method, lookupError: null, BoundMethodGroupFlags.None, functionType: null, receiver, LookupResultKind.Viable) 10969LookupResultKind methodResultKind = methodResolution.ResultKind; 10970LookupResultKind extensionMethodResultKind = extensionMethodResolution.ResultKind; 11285if (node.ResultKind == LookupResultKind.Viable)

549LookupResultKind.Viable, 733if (outConstructorCall is not BoundObjectCreationExpression { ResultKind: LookupResultKind.Viable }) 746if (nonOutConstructorCall is BoundObjectCreationExpression { ResultKind: LookupResultKind.Viable })

122return BadExpression(node, LookupResultKind.Empty, ImmutableArray.Create(symbol), args.Add(receiver), wasCompilerGenerated: true); 151result = CreateBadCall(node, boundExpression, LookupResultKind.NotInvocable, analyzedArguments); 373return CreateBadCall(node, boundExpression, LookupResultKind.NotInvocable, analyzedArguments); 390result = CreateBadCall(node, boundExpression, LookupResultKind.NotInvocable, analyzedArguments); 743anyApplicableCandidates = resolution.ResultKind == LookupResultKind.Viable && resolution.OverloadResolutionResult.HasAnyApplicableMember; 750LookupResultKind resultKind; 799if (resolution.ResultKind != LookupResultKind.Viable) 1366argsToParamsOpt: argsToParams, defaultArguments, resultKind: LookupResultKind.Viable, type: returnType, hasErrors: gotError); 2043LookupResultKind resultKind, 2323LookupResultKind resultKind, 2571LookupResultKind.OverloadResolutionFailure, 2590LookupResultKind.Viable,

75if (result.Kind != LookupResultKind.Viable && result.Kind != LookupResultKind.Empty) 210if (resultOfThisMember.Kind == LookupResultKind.Empty) 272if (errorType.ResultKind == LookupResultKind.Inaccessible) 462if (res.Kind == LookupResultKind.Viable) 478if (res.Kind == LookupResultKind.Viable) 699if (result == null || result.Kind != LookupResultKind.Viable || (object)symbol == null) 998result.MergeEqual(new SingleLookupResult(LookupResultKind.Viable, sym, null));

62leftPlaceholder: null, leftConversion: null, finalPlaceholder: null, finalConversion: null, LookupResultKind.Empty, CreateErrorType(), hasErrors: true); 95LookupResultKind.Viable, 107leftPlaceholder: null, leftConversion: null, finalPlaceholder: null, finalConversion: null, LookupResultKind.Empty, CreateErrorType(), hasErrors: true); 121leftPlaceholder: null, leftConversion: null, finalPlaceholder: null, finalConversion: null, LookupResultKind.NotAVariable, CreateErrorType(), hasErrors: true); 126return createBadCompoundAssignmentOperator(node, kind, left, right, LookupResultKind.OverloadResolutionFailure, originalUserDefinedOperators: default, ref operatorResolutionForReporting, diagnostics); 155LookupResultKind resultKind; 162Debug.Assert(resultKind is LookupResultKind.Viable or LookupResultKind.Ambiguous or LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 163Debug.Assert(best.HasValue == (resultKind is LookupResultKind.Viable)); 164Debug.Assert(resultKind is not (LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty) || originalUserDefinedOperators.IsEmpty); 166if (!best.HasValue && resultKind != LookupResultKind.Ambiguous) 168Debug.Assert(resultKind is LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 171LookupResultKind staticExtensionResultKind; 184Debug.Assert(instanceExtensionResult.ResultKind is LookupResultKind.Viable || !instanceExtensionResult.OriginalUserDefinedOperatorsOpt.IsDefaultOrEmpty); 330LookupResultKind resultKind, 525resultKind: LookupResultKind.Viable, 546resultKind: LookupResultKind.OverloadResolutionFailure, 586out LookupResultKind staticResultKind, 590staticResultKind = LookupResultKind.Empty; 853resultKind: LookupResultKind.Viable, 951return new BoundBinaryOperator(node, kind, ConstantValue.NotAvailable, methodOpt: null, constrainedToTypeOpt: null, LookupResultKind.Empty, left, right, GetBinaryOperatorErrorType(kind, diagnostics, node), true); 992return new BoundBinaryOperator(node, BinaryOperatorKind.StringConcatenation, BoundBinaryOperator.UncommonData.UnconvertedInterpolatedStringAddition(stringConstant), LookupResultKind.Empty, left, right, right.Type); 1010LookupResultKind resultKind; 1137ref OperatorResolutionForReporting operatorResolutionForReporting, out LookupResultKind resultKind, 1142resultKind = LookupResultKind.OverloadResolutionFailure; 1161ref LookupResultKind resultKind, 1226LookupResultKind extensionResultKind; 1290private void ReportUnaryOperatorError(CSharpSyntaxNode node, BindingDiagnosticBag diagnostics, string operatorName, BoundExpression operand, LookupResultKind resultKind, ref OperatorResolutionForReporting operatorResolutionForReporting) 1303ErrorCode errorCode = resultKind == LookupResultKind.Ambiguous ? 1311LookupResultKind resultKind, ref OperatorResolutionForReporting operatorResolutionForReporting) 1331LookupResultKind resultKind, ref OperatorResolutionForReporting operatorResolutionForReporting) 1369case LookupResultKind.Ambiguous: 1373case LookupResultKind.OverloadResolutionFailure when operatorToken.Kind() is SyntaxKind.PlusToken && isReadOnlySpanOfByte(left.Type) && isReadOnlySpanOfByte(right.Type): 1454resultKind: LookupResultKind.Viable, left, right, type: left.Type, hasErrors: constantValue != null && constantValue.IsBad); 1464resultKind: LookupResultKind.Empty, left, right, type: GetBinaryOperatorErrorType(kind, diagnostics, node), hasErrors: true); 1474LookupResultKind lookupResult; 1480lookupResult = LookupResultKind.OverloadResolutionFailure; 2046out LookupResultKind resultKind, 2064out LookupResultKind resultKind, 2069Debug.Assert(resultKind is LookupResultKind.Viable or LookupResultKind.Ambiguous or LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 2070Debug.Assert(possiblyBest.HasValue == (resultKind is LookupResultKind.Viable)); 2071Debug.Assert(resultKind is not (LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty) || originalUserDefinedOperators.IsEmpty); 2073if (!possiblyBest.HasValue && resultKind != LookupResultKind.Ambiguous) 2075Debug.Assert(resultKind is LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 2078LookupResultKind extensionResultKind; 2105out LookupResultKind resultKind, 2108resultKind = LookupResultKind.Empty; 2165out LookupResultKind resultKind, 2179Debug.Assert(resultKind is LookupResultKind.Viable or LookupResultKind.Ambiguous or LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 2180Debug.Assert(possiblyBest.HasValue == (resultKind is LookupResultKind.Viable)); 2181Debug.Assert(resultKind is not (LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty) || originalUserDefinedOperators.IsEmpty); 2186private static BinaryOperatorAnalysisResult BinaryOperatorAnalyzeOverloadResolutionResult(BinaryOperatorOverloadResolutionResult result, out LookupResultKind resultKind, out ImmutableArray<MethodSymbol> originalUserDefinedOperators) 2205resultKind = LookupResultKind.Viable; 2209resultKind = LookupResultKind.Ambiguous; 2213resultKind = LookupResultKind.OverloadResolutionFailure; 2219resultKind = possiblyBest.HasValue ? LookupResultKind.Viable : LookupResultKind.Empty; 2267out LookupResultKind resultKind, 2275Debug.Assert(resultKind is LookupResultKind.Viable or LookupResultKind.Ambiguous or LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 2276Debug.Assert(best.HasValue == (resultKind is LookupResultKind.Viable)); 2277Debug.Assert(resultKind is not (LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty) || originalUserDefinedOperators.IsEmpty); 2279if (!best.HasValue && resultKind != LookupResultKind.Ambiguous) 2281Debug.Assert(resultKind is LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 2284LookupResultKind extensionResultKind; 2309out LookupResultKind resultKind, 2324Debug.Assert(resultKind is LookupResultKind.Viable or LookupResultKind.Ambiguous or LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 2325Debug.Assert(possiblyBest.HasValue == (resultKind is LookupResultKind.Viable)); 2326Debug.Assert(resultKind is not (LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty) || originalUserDefinedOperators.IsEmpty); 2337out LookupResultKind resultKind, 2357resultKind = LookupResultKind.Viable; 2372resultKind = LookupResultKind.OverloadResolutionFailure; 2376resultKind = LookupResultKind.Ambiguous; 2381resultKind = LookupResultKind.OverloadResolutionFailure; 2387resultKind = possiblyBest.HasValue ? LookupResultKind.Viable : LookupResultKind.Empty; 2416out LookupResultKind resultKind, 2419resultKind = LookupResultKind.Empty; 3277LookupResultKind.Empty, 3298resultKind: LookupResultKind.Viable, 3324LookupResultKind resultKind; 3328Debug.Assert(resultKind is LookupResultKind.Viable or LookupResultKind.Ambiguous or LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 3329Debug.Assert(best.HasValue == (resultKind is LookupResultKind.Viable)); 3330Debug.Assert(resultKind is not (LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty) || originalUserDefinedOperators.IsEmpty); 3332if (!best.HasValue && resultKind != LookupResultKind.Ambiguous) 3334Debug.Assert(resultKind is LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 3338LookupResultKind staticExtensionResultKind; 3351Debug.Assert(instanceExtensionResult.ResultKind is LookupResultKind.Viable || !instanceExtensionResult.OriginalUserDefinedOperatorsOpt.IsDefaultOrEmpty); 3611LookupResultKind.Viable, 3636LookupResultKind.OverloadResolutionFailure, 3675out LookupResultKind staticResultKind, 3681staticResultKind = LookupResultKind.Empty; 4341resultKind: LookupResultKind.Empty, 4362resultKind: LookupResultKind.Viable, 4366LookupResultKind resultKind;

378lengthAccess = new BoundPropertyAccess(node, receiverPlaceholder, initialBindingReceiverIsSubjectToCloning: ThreeState.False, lengthProperty, autoPropertyAccessorKind: AccessorKind.Unknown, LookupResultKind.Viable, lengthProperty.Type) { WasCompilerGenerated = true }; 382lengthAccess = new BoundBadExpression(node, LookupResultKind.Empty, ImmutableArray<Symbol?>.Empty, ImmutableArray<BoundExpression>.Empty, CreateErrorType(), hasErrors: true) { WasCompilerGenerated = true }; 1595case LookupResultKind.Empty: 1599case LookupResultKind.Inaccessible:

302state.selectOrGroup, LookupResultKind.OverloadResolutionFailure, ImmutableArray<Symbol?>.Empty, 741yExpression = new BoundBadExpression(yExpression.Syntax, LookupResultKind.Empty, ImmutableArray<Symbol?>.Empty, ImmutableArray.Create(yExpression), CreateErrorType()); 747yExpression = new BoundBadExpression(yExpression.Syntax, LookupResultKind.Empty, ImmutableArray<Symbol?>.Empty, ImmutableArray.Create(yExpression), yExpression.Type); 808field2Value = new BoundBadExpression(field2Value.Syntax, LookupResultKind.Empty, ImmutableArray<Symbol?>.Empty, ImmutableArray.Create(field2Value), field2Value.Type, true); 964receiver = new BoundBadExpression(receiver.Syntax, LookupResultKind.NotAValue, ImmutableArray<Symbol?>.Empty, ImmutableArray.Create(receiver), CreateErrorType()); 986receiver = new BoundBadExpression(receiver.Syntax, LookupResultKind.NotAValue, ImmutableArray<Symbol?>.Empty, ImmutableArray.Create(receiver), CreateErrorType());

2312else if (conversion.ResultKind == LookupResultKind.OverloadResolutionFailure) 2708LookupResultKind.Viable, 2754var best = this.UnaryOperatorOverloadResolution(UnaryOperatorKind.True, expr, node, diagnostics, ref discardedOperatorResolutionForReporting, out LookupResultKind resultKind, out ImmutableArray<MethodSymbol> originalUserDefinedOperators); 3983LookupResultKind resultKind = LookupResultKind.Viable; 4013resultKind = LookupResultKind.Inaccessible; 4083resultKind: LookupResultKind.Viable, 4221if (call.ResultKind == LookupResultKind.Empty)

224case LookupResultKind.Empty: 230case LookupResultKind.Viable: 343return TypeWithAnnotations.Create(new ExtendedErrorTypeSymbol(GetContainingNamespaceOrNonExtensionType(symbol.Symbol), symbol.Symbol, LookupResultKind.NotATypeOrNamespace, diagnosticInfo)); 594return TypeWithAnnotations.Create(new ExtendedErrorTypeSymbol(left, LookupResultKind.NotATypeOrNamespace, diagnostics.Add(ErrorCode.ERR_ColColWithTypeAlias, node.Alias.Location, node.Alias.Identifier.Text))); 1519receiver = new BoundBadExpression(receiver.Syntax, LookupResultKind.Ambiguous, ImmutableArray<Symbol>.Empty, ImmutableArray.Create(receiver), receiver.Type, hasErrors: true).MakeCompilerGenerated(); 1529receiver = new BoundBadExpression(receiver.Syntax, LookupResultKind.Empty, ImmutableArray<Symbol>.Empty, childBoundNodes: [AdjustBadExpressionChild(receiver)], receiver.Type, hasErrors: true).MakeCompilerGenerated(); 2320LookupResultKind.Ambiguous, 2336singleResult = new ExtendedErrorTypeSymbol(GetContainingNamespaceOrNonExtensionType(singleResult), singleResult, LookupResultKind.NotReferencable, errorInfo); // UNDONE: Review resultkind. 2382if (result.Kind == LookupResultKind.Empty) 2420result.Kind == LookupResultKind.NotATypeOrNamespace || result.Kind == LookupResultKind.NotAnAttributeType)

159LookupResultKind resultKind; 216ReportBinaryOperatorError(node, diagnostics, node.OperatorToken, left, right, LookupResultKind.Ambiguous, ref discardedOperatorResolutionForReporting);

33if (lookupResult.Kind == LookupResultKind.Empty)

744LookupResultKind.Empty, 957if (collectionExpr.ResultKind == LookupResultKind.NotAValue)

65private LookupResultKind _kind; 78_kind = LookupResultKind.Empty; 87return _kind == LookupResultKind.Empty && _error == null && _symbolList.Count == 0; 93_kind = LookupResultKind.Empty; 98internal LookupResultKind Kind 140return Kind == LookupResultKind.Viable; 151return Kind == LookupResultKind.Viable && _symbolList.Count == 1; 157return new SingleLookupResult(LookupResultKind.Viable, symbol, null); 162return new SingleLookupResult(LookupResultKind.WrongArity, symbol, error); 167return new SingleLookupResult(LookupResultKind.Empty, null, null); 172return new SingleLookupResult(LookupResultKind.NotReferencable, symbol, error); 177return new SingleLookupResult(LookupResultKind.StaticInstanceMismatch, symbol, error); 182return new SingleLookupResult(LookupResultKind.Inaccessible, symbol, error); 188return new SingleLookupResult(LookupResultKind.NotInvocable, symbol, diagInfo); 193return new SingleLookupResult(LookupResultKind.NotLabel, symbol, error); 198return new SingleLookupResult(LookupResultKind.NotATypeOrNamespace, symbol, error); 205return new SingleLookupResult(LookupResultKind.NotATypeOrNamespace, symbol, diagInfo); 210return new SingleLookupResult(LookupResultKind.NotAnAttributeType, symbol, error); 266else if (Kind != LookupResultKind.Viable) 294if (Kind == LookupResultKind.WrongArity && result.Kind == LookupResultKind.WrongArity)

74public static CandidateReason ToCandidateReason(this LookupResultKind resultKind) 78case LookupResultKind.Empty: return CandidateReason.None; 79case LookupResultKind.NotATypeOrNamespace: return CandidateReason.NotATypeOrNamespace; 80case LookupResultKind.NotAnAttributeType: return CandidateReason.NotAnAttributeType; 81case LookupResultKind.WrongArity: return CandidateReason.WrongArity; 82case LookupResultKind.Inaccessible: return CandidateReason.Inaccessible; 83case LookupResultKind.NotCreatable: return CandidateReason.NotCreatable; 84case LookupResultKind.NotReferencable: return CandidateReason.NotReferencable; 85case LookupResultKind.NotAValue: return CandidateReason.NotAValue; 86case LookupResultKind.NotAVariable: return CandidateReason.NotAVariable; 87case LookupResultKind.NotInvocable: return CandidateReason.NotInvocable; 88case LookupResultKind.StaticInstanceMismatch: return CandidateReason.StaticInstanceMismatch; 89case LookupResultKind.OverloadResolutionFailure: return CandidateReason.OverloadResolutionFailure; 90case LookupResultKind.Ambiguous: return CandidateReason.Ambiguous; 91case LookupResultKind.MemberGroup: return CandidateReason.MemberGroup; 93case LookupResultKind.Viable: 103public static LookupResultKind WorseResultKind(this LookupResultKind resultKind1, LookupResultKind resultKind2) 105if (resultKind1 == LookupResultKind.Empty) 107if (resultKind2 == LookupResultKind.Empty)

26public readonly LookupResultKind ResultKind; 33public MethodGroupResolution(Symbol otherSymbol, LookupResultKind resultKind, ReadOnlyBindingDiagnostic<AssemblySymbol> diagnostics) 43LookupResultKind resultKind, 51Debug.Assert(resultKind != LookupResultKind.Ambiguous); // HasAnyApplicableMethod is expecting Viable methods. 78(this.ResultKind == LookupResultKind.Viable) && 94bool isExtensionMember = ResultKind == LookupResultKind.Viable && MethodGroup is null;

1044internal LookupResultKind ResultKind 1053return LookupResultKind.Viable; 1057return LookupResultKind.OverloadResolutionFailure; 1061return this.Kind == ConversionKind.NoConversion ? LookupResultKind.Empty : LookupResultKind.Viable; 1068return LookupResultKind.OverloadResolutionFailure;

374resolution.ResultKind == LookupResultKind.Viable)

22internal LookupResultKind ResultKind { get; private set; } 33LookupResultKind resultKind = LookupResultKind.Viable, 44LookupResultKind resultKind = LookupResultKind.Viable, 69LookupResultKind resultKind = LookupResultKind.Viable, 80private void PopulateHelper(BoundExpression receiverOpt, LookupResultKind resultKind, DiagnosticInfo error) 95this.ResultKind = LookupResultKind.Empty; 134Debug.Assert(this.ResultKind == LookupResultKind.Empty);

21internal readonly LookupResultKind Kind; 29internal SingleLookupResult(LookupResultKind kind, Symbol? symbol, DiagnosticInfo? error) 31Debug.Assert(symbol is not null || kind == LookupResultKind.Empty);

461return new BoundBadExpression(node, LookupResultKind.Empty, ImmutableArray<Symbol>.Empty, ImmutableArray.Create(switchGoverningExpression), switchGoverningType ?? CreateErrorType());

138if (res.Kind == LookupResultKind.Viable)

11public bool IsErroneousNode => ResultKind is not LookupResultKind.Viable; 15Debug.Assert(ResultKind is not LookupResultKind.MemberGroup); 16Debug.Assert(ResultKind is not LookupResultKind.StaticInstanceMismatch); 17Debug.Assert(ResultKind is LookupResultKind.Viable || HasErrors);

123public virtual LookupResultKind ResultKind 127return LookupResultKind.Viable; 285public override LookupResultKind ResultKind 293return LookupResultKind.Viable; 355public override LookupResultKind ResultKind 359return !this.OriginalIndexersOpt.IsDefault ? LookupResultKind.OverloadResolutionFailure : base.ResultKind;

20: this(syntax, receiver, fieldSymbol, constantValueOpt, LookupResultKind.Viable, fieldSymbol.Type, hasErrors) 29LookupResultKind resultKind, 41LookupResultKind resultKind, 53LookupResultKind resultKind, 99LookupResultKind resultKind, 117LookupResultKind resultKind, 131LookupResultKind resultKind, 136resultKind = resultKind.WorseResultKind(LookupResultKind.OverloadResolutionFailure); 143Debug.Assert(resultKind is not LookupResultKind.Viable); 230resultKind: LookupResultKind.Viable, 420LookupResultKind resultKind, 441LookupResultKind resultKind, 454LookupResultKind resultKind, 540public BoundBadExpression(SyntaxNode syntax, LookupResultKind resultKind, ImmutableArray<Symbol?> symbols, ImmutableArray<BoundExpression> childBoundNodes, TypeSymbol type) 662LookupResultKind resultKind, 676LookupResultKind resultKind, 690LookupResultKind resultKind, 702LookupResultKind resultKind, 719LookupResultKind resultKind, 726public BoundIncrementOperator Update(UnaryOperatorKind operatorKind, BoundExpression operand, MethodSymbol? methodOpt, TypeSymbol? constrainedToTypeOpt, BoundValuePlaceholder? operandPlaceholder, BoundExpression? operandConversion, BoundValuePlaceholder? resultPlaceholder, BoundExpression? resultConversion, LookupResultKind resultKind, TypeSymbol type)

104LookupResultKind.Viable,

384LookupResultKind resultKind = LookupResultKind.Ambiguous; 392resultKind = LookupResultKind.OverloadResolutionFailure; 1930boundExpr, boundNodeForSyntacticParent, binderOpt, options, out bool isDynamic, out LookupResultKind resultKind, out ImmutableArray<Symbol> unusedMemberGroup); 1935LookupResultKind highestResultKind; 1941if (highestResultKind != LookupResultKind.Empty && highestResultKind < resultKind) 1948resultKind == LookupResultKind.OverloadResolutionFailure && 1951LookupResultKind highestResultKind; 1965if (resultKind == LookupResultKind.Empty) 1969return SymbolInfoFactory.Create(ImmutableArray<Symbol>.Empty, LookupResultKind.Empty, isDynamic); 1989if (resultKind == LookupResultKind.Viable && symbols.Count > 1) 1991resultKind = LookupResultKind.OverloadResolutionFailure; 2291LookupResultKind resultKind; 2337LookupResultKind resultKind = originalErrorSymbol.ResultKind; 2338if (resultKind != LookupResultKind.Empty) 3358out LookupResultKind resultKind, 3363resultKind = LookupResultKind.Viable; 3384if (resultKind == LookupResultKind.NotCreatable) 3390resultKind = LookupResultKind.Empty; 3412((BoundBadExpression)boundNodeForSyntacticParent).ResultKind == LookupResultKind.NotCreatable) 3414resultKind = LookupResultKind.NotCreatable; 3516resultKind = LookupResultKind.Empty; 3525case BoundKind.EventAccess when boundNodeForSyntacticParent is BoundEventAssignmentOperator { ResultKind: LookupResultKind.Viable } parentOperator && 3606Debug.Assert(resultKind != LookupResultKind.Viable); 3685resultKind = resultKind.WorseResultKind(LookupResultKind.OverloadResolutionFailure); 3743private static ParameterSymbol GetThisParameter(TypeSymbol typeOfThis, NamedTypeSymbol containingType, Symbol containingMember, out LookupResultKind resultKind) 3748resultKind = LookupResultKind.NotReferencable; 3761resultKind = LookupResultKind.NotReferencable; 3767resultKind = LookupResultKind.StaticInstanceMismatch; 3776resultKind = LookupResultKind.NotReferencable; 3783resultKind = LookupResultKind.Viable; 3791resultKind = LookupResultKind.NotReferencable; 3804resultKind = LookupResultKind.NotReferencable; 3811private static void GetSymbolsAndResultKind(BoundUnaryOperator unaryOperator, out bool isDynamic, ref LookupResultKind resultKind, ref OneOrMany<Symbol> symbols) 3816if (operandType == 0 || operandType == UnaryOperatorKind.UserDefined || unaryOperator.ResultKind != LookupResultKind.Viable) 3834private static void GetSymbolsAndResultKind(BoundIncrementOperator increment, out bool isDynamic, ref LookupResultKind resultKind, ref OneOrMany<Symbol> symbols) 3839if (operandType == 0 || operandType == UnaryOperatorKind.UserDefined || increment.ResultKind != LookupResultKind.Viable) 3858private static void GetSymbolsAndResultKind(BoundBinaryOperator binaryOperator, out bool isDynamic, ref LookupResultKind resultKind, ref OneOrMany<Symbol> symbols) 3864if (operandType == 0 || operandType == BinaryOperatorKind.UserDefined || binaryOperator.ResultKind != LookupResultKind.Viable || binaryOperator.OperatorKind.IsLogical()) 3931private static void GetSymbolsAndResultKind(BoundCompoundAssignmentOperator compoundAssignment, out bool isDynamic, ref LookupResultKind resultKind, ref OneOrMany<Symbol> symbols) 3937if (operandType == 0 || operandType == BinaryOperatorKind.UserDefined || compoundAssignment.ResultKind != LookupResultKind.Viable) 3957private static void GetSymbolsAndResultKind(BoundExpression node, Symbol symbolOpt, ImmutableArray<MethodSymbol> originalCandidates, out OneOrMany<Symbol> symbols, out LookupResultKind resultKind) 3972resultKind = LookupResultKind.Empty; 3983ref LookupResultKind resultKind, 4005Debug.Assert(resultKind != LookupResultKind.Viable || 4036ref LookupResultKind resultKind, 4066Debug.Assert(resultKind != LookupResultKind.Viable); 4083Debug.Assert(resultKind != LookupResultKind.Viable); 4084resultKind = resultKind.WorseResultKind(LookupResultKind.OverloadResolutionFailure); 4254out LookupResultKind resultKind, 4263if (resultKind == LookupResultKind.Empty) 4265resultKind = LookupResultKind.Viable; 4290resultKind = LookupResultKind.Viable; 4294resultKind = call.ResultKind.WorseResultKind(LookupResultKind.OverloadResolutionFailure); 4361resultKind = resultKind.WorseResultKind(LookupResultKind.MemberGroup); 4368resultKind = resultKind.WorseResultKind(LookupResultKind.OverloadResolutionFailure); 4383resultKind = resultKind.WorseResultKind(LookupResultKind.OverloadResolutionFailure); 4393if (!isDynamic && resultKind > LookupResultKind.OverloadResolutionFailure) 4395resultKind = LookupResultKind.OverloadResolutionFailure; 4407out LookupResultKind resultKind, 4415if (resultKind == LookupResultKind.Empty) 4417resultKind = LookupResultKind.Viable; 4439resultKind = LookupResultKind.Viable; 4443resultKind = indexer.ResultKind.WorseResultKind(LookupResultKind.OverloadResolutionFailure); 4478if (resultKind > LookupResultKind.OverloadResolutionFailure) 4480resultKind = LookupResultKind.OverloadResolutionFailure; 4583var resultKind = LookupResultKind.Empty; 4719ref LookupResultKind resultKind, 4729LookupResultKind singleKind = singleResult.Kind; 4738resultKind = LookupResultKind.Empty; 4750Debug.Assert((members.Count == 0) == (resultKind == LookupResultKind.Empty));

20internal static SymbolInfo Create(ImmutableArray<Symbol> symbols, LookupResultKind resultKind, bool isDynamic) 23internal static SymbolInfo Create(OneOrMany<Symbol> symbols, LookupResultKind resultKind, bool isDynamic) 36else if (resultKind == LookupResultKind.Viable)

267result = SymbolInfoFactory.Create(symbols, LookupResultKind.Viable, isDynamic: false); 270result = SymbolInfoFactory.Create(symbols, LookupResultKind.Ambiguous, isDynamic: false);

56resultKind: LookupResultKind.Viable, 506resultKind: LookupResultKind.Viable,

989public BoundBadExpression(SyntaxNode syntax, LookupResultKind resultKind, ImmutableArray<Symbol?> symbols, ImmutableArray<BoundExpression> childBoundNodes, TypeSymbol? type, bool hasErrors = false) 1005public override LookupResultKind ResultKind { get; } 1012public BoundBadExpression Update(LookupResultKind resultKind, ImmutableArray<Symbol?> symbols, ImmutableArray<BoundExpression> childBoundNodes, TypeSymbol? type) 1207public BoundUnaryOperator(SyntaxNode syntax, UnaryOperatorKind operatorKind, BoundExpression operand, ConstantValue? constantValueOpt, MethodSymbol? methodOpt, TypeSymbol? constrainedToTypeOpt, LookupResultKind resultKind, ImmutableArray<MethodSymbol> originalUserDefinedOperatorsOpt, TypeSymbol type, bool hasErrors = false) 1229public override LookupResultKind ResultKind { get; } 1235public BoundUnaryOperator Update(UnaryOperatorKind operatorKind, BoundExpression operand, ConstantValue? constantValueOpt, MethodSymbol? methodOpt, TypeSymbol? constrainedToTypeOpt, LookupResultKind resultKind, ImmutableArray<MethodSymbol> originalUserDefinedOperatorsOpt, TypeSymbol type) 1249public BoundIncrementOperator(SyntaxNode syntax, UnaryOperatorKind operatorKind, BoundExpression operand, MethodSymbol? methodOpt, TypeSymbol? constrainedToTypeOpt, BoundValuePlaceholder? operandPlaceholder, BoundExpression? operandConversion, BoundValuePlaceholder? resultPlaceholder, BoundExpression? resultConversion, LookupResultKind resultKind, ImmutableArray<MethodSymbol> originalUserDefinedOperatorsOpt, TypeSymbol type, bool hasErrors = false) 1277public override LookupResultKind ResultKind { get; } 1283public BoundIncrementOperator Update(UnaryOperatorKind operatorKind, BoundExpression operand, MethodSymbol? methodOpt, TypeSymbol? constrainedToTypeOpt, BoundValuePlaceholder? operandPlaceholder, BoundExpression? operandConversion, BoundValuePlaceholder? resultPlaceholder, BoundExpression? resultConversion, LookupResultKind resultKind, ImmutableArray<MethodSymbol> originalUserDefinedOperatorsOpt, TypeSymbol type) 1470public BoundFunctionPointerInvocation(SyntaxNode syntax, BoundExpression invokedExpression, ImmutableArray<BoundExpression> arguments, ImmutableArray<RefKind> argumentRefKindsOpt, LookupResultKind resultKind, TypeSymbol type, bool hasErrors = false) 1488public override LookupResultKind ResultKind { get; } 1493public BoundFunctionPointerInvocation Update(BoundExpression invokedExpression, ImmutableArray<BoundExpression> arguments, ImmutableArray<RefKind> argumentRefKindsOpt, LookupResultKind resultKind, TypeSymbol type) 1685public BoundBinaryOperator(SyntaxNode syntax, BinaryOperatorKind operatorKind, BoundBinaryOperator.UncommonData? data, LookupResultKind resultKind, BoundExpression left, BoundExpression right, TypeSymbol type, bool hasErrors = false) 1704public override LookupResultKind ResultKind { get; } 1709public BoundBinaryOperator Update(BinaryOperatorKind operatorKind, BoundBinaryOperator.UncommonData? data, LookupResultKind resultKind, BoundExpression left, BoundExpression right, TypeSymbol type) 1761public BoundUserDefinedConditionalLogicalOperator(SyntaxNode syntax, BinaryOperatorKind operatorKind, MethodSymbol logicalOperator, MethodSymbol trueOperator, MethodSymbol falseOperator, BoundValuePlaceholder? trueFalseOperandPlaceholder, BoundExpression? trueFalseOperandConversion, TypeSymbol? constrainedToTypeOpt, LookupResultKind resultKind, ImmutableArray<MethodSymbol> originalUserDefinedOperatorsOpt, BoundExpression left, BoundExpression right, TypeSymbol type, bool hasErrors = false) 1794public override LookupResultKind ResultKind { get; } 1800public BoundUserDefinedConditionalLogicalOperator Update(BinaryOperatorKind operatorKind, MethodSymbol logicalOperator, MethodSymbol trueOperator, MethodSymbol falseOperator, BoundValuePlaceholder? trueFalseOperandPlaceholder, BoundExpression? trueFalseOperandConversion, TypeSymbol? constrainedToTypeOpt, LookupResultKind resultKind, ImmutableArray<MethodSymbol> originalUserDefinedOperatorsOpt, BoundExpression left, BoundExpression right, TypeSymbol type) 1814public BoundCompoundAssignmentOperator(SyntaxNode syntax, BinaryOperatorSignature @operator, BoundExpression left, BoundExpression right, BoundValuePlaceholder? leftPlaceholder, BoundExpression? leftConversion, BoundValuePlaceholder? finalPlaceholder, BoundExpression? finalConversion, LookupResultKind resultKind, ImmutableArray<MethodSymbol> originalUserDefinedOperatorsOpt, TypeSymbol type, bool hasErrors = false) 1841public override LookupResultKind ResultKind { get; } 1847public BoundCompoundAssignmentOperator Update(BinaryOperatorSignature @operator, BoundExpression left, BoundExpression right, BoundValuePlaceholder? leftPlaceholder, BoundExpression? leftConversion, BoundValuePlaceholder? finalPlaceholder, BoundExpression? finalConversion, LookupResultKind resultKind, ImmutableArray<MethodSymbol> originalUserDefinedOperatorsOpt, TypeSymbol type) 5780protected BoundMethodOrPropertyGroup(BoundKind kind, SyntaxNode syntax, BoundExpression? receiverOpt, LookupResultKind resultKind, bool hasErrors = false) 5789public override LookupResultKind ResultKind { get; } 6131public BoundMethodGroup(SyntaxNode syntax, ImmutableArray<TypeWithAnnotations> typeArgumentsOpt, string name, ImmutableArray<MethodSymbol> methods, Symbol? lookupSymbolOpt, DiagnosticInfo? lookupError, BoundMethodGroupFlags? flags, FunctionTypeSymbol? functionType, BoundExpression? receiverOpt, LookupResultKind resultKind, bool hasErrors = false) 6158public BoundMethodGroup Update(ImmutableArray<TypeWithAnnotations> typeArgumentsOpt, string name, ImmutableArray<MethodSymbol> methods, Symbol? lookupSymbolOpt, DiagnosticInfo? lookupError, BoundMethodGroupFlags? flags, FunctionTypeSymbol? functionType, BoundExpression? receiverOpt, LookupResultKind resultKind) 6172public BoundPropertyGroup(SyntaxNode syntax, ImmutableArray<PropertySymbol> properties, BoundExpression? receiverOpt, LookupResultKind resultKind, bool hasErrors = false) 6186public BoundPropertyGroup Update(ImmutableArray<PropertySymbol> properties, BoundExpression? receiverOpt, LookupResultKind resultKind) 6200public BoundCall(SyntaxNode syntax, BoundExpression? receiverOpt, ThreeState initialBindingReceiverIsSubjectToCloning, MethodSymbol method, ImmutableArray<BoundExpression> arguments, ImmutableArray<string?> argumentNamesOpt, ImmutableArray<RefKind> argumentRefKindsOpt, bool isDelegateCall, bool expanded, bool invokedAsExtensionMethod, ImmutableArray<int> argsToParamsOpt, BitVector defaultArguments, LookupResultKind resultKind, ImmutableArray<MethodSymbol> originalMethodsOpt, TypeSymbol type, bool hasErrors = false) 6239public override LookupResultKind ResultKind { get; } 6245public BoundCall Update(BoundExpression? receiverOpt, ThreeState initialBindingReceiverIsSubjectToCloning, MethodSymbol method, ImmutableArray<BoundExpression> arguments, ImmutableArray<string?> argumentNamesOpt, ImmutableArray<RefKind> argumentRefKindsOpt, bool isDelegateCall, bool expanded, bool invokedAsExtensionMethod, ImmutableArray<int> argsToParamsOpt, BitVector defaultArguments, LookupResultKind resultKind, ImmutableArray<MethodSymbol> originalMethodsOpt, TypeSymbol type) 6298public BoundAttribute(SyntaxNode syntax, MethodSymbol? constructor, ImmutableArray<BoundExpression> constructorArguments, ImmutableArray<string?> constructorArgumentNamesOpt, ImmutableArray<int> constructorArgumentsToParamsOpt, bool constructorExpanded, BitVector constructorDefaultArguments, ImmutableArray<BoundAssignmentOperator> namedArguments, LookupResultKind resultKind, TypeSymbol type, bool hasErrors = false) 6324public override LookupResultKind ResultKind { get; } 6329public BoundAttribute Update(MethodSymbol? constructor, ImmutableArray<BoundExpression> constructorArguments, ImmutableArray<string?> constructorArgumentNamesOpt, ImmutableArray<int> constructorArgumentsToParamsOpt, bool constructorExpanded, BitVector constructorDefaultArguments, ImmutableArray<BoundAssignmentOperator> namedArguments, LookupResultKind resultKind, TypeSymbol type) 6846public BoundObjectInitializerMember(SyntaxNode syntax, Symbol? memberSymbol, ImmutableArray<BoundExpression> arguments, ImmutableArray<string?> argumentNamesOpt, ImmutableArray<RefKind> argumentRefKindsOpt, bool expanded, ImmutableArray<int> argsToParamsOpt, BitVector defaultArguments, LookupResultKind resultKind, AccessorKind accessorKind, TypeSymbol receiverType, TypeSymbol type, bool hasErrors = false) 6874public override LookupResultKind ResultKind { get; } 6881public BoundObjectInitializerMember Update(Symbol? memberSymbol, ImmutableArray<BoundExpression> arguments, ImmutableArray<string?> argumentNamesOpt, ImmutableArray<RefKind> argumentRefKindsOpt, bool expanded, ImmutableArray<int> argsToParamsOpt, BitVector defaultArguments, LookupResultKind resultKind, AccessorKind accessorKind, TypeSymbol receiverType, TypeSymbol type) 6968public BoundCollectionElementInitializer(SyntaxNode syntax, MethodSymbol addMethod, ImmutableArray<BoundExpression> arguments, BoundExpression? implicitReceiverOpt, bool expanded, ImmutableArray<int> argsToParamsOpt, BitVector defaultArguments, bool invokedAsExtensionMethod, LookupResultKind resultKind, TypeSymbol type, bool hasErrors = false) 6994public override LookupResultKind ResultKind { get; } 6999public BoundCollectionElementInitializer Update(MethodSymbol addMethod, ImmutableArray<BoundExpression> arguments, BoundExpression? implicitReceiverOpt, bool expanded, ImmutableArray<int> argsToParamsOpt, BitVector defaultArguments, bool invokedAsExtensionMethod, LookupResultKind resultKind, TypeSymbol type) 7360public BoundFieldAccess(SyntaxNode syntax, BoundExpression? receiverOpt, FieldSymbol fieldSymbol, ConstantValue? constantValueOpt, LookupResultKind resultKind, bool isByValue, bool isDeclaration, TypeSymbol type, bool hasErrors = false) 7379public override LookupResultKind ResultKind { get; } 7386public BoundFieldAccess Update(BoundExpression? receiverOpt, FieldSymbol fieldSymbol, ConstantValue? constantValueOpt, LookupResultKind resultKind, bool isByValue, bool isDeclaration, TypeSymbol type) 7440public BoundPropertyAccess(SyntaxNode syntax, BoundExpression? receiverOpt, ThreeState initialBindingReceiverIsSubjectToCloning, PropertySymbol propertySymbol, AccessorKind autoPropertyAccessorKind, LookupResultKind resultKind, TypeSymbol type, bool hasErrors = false) 7459public override LookupResultKind ResultKind { get; } 7464public BoundPropertyAccess Update(BoundExpression? receiverOpt, ThreeState initialBindingReceiverIsSubjectToCloning, PropertySymbol propertySymbol, AccessorKind autoPropertyAccessorKind, LookupResultKind resultKind, TypeSymbol type) 7478public BoundEventAccess(SyntaxNode syntax, BoundExpression? receiverOpt, EventSymbol eventSymbol, bool isUsableAsField, LookupResultKind resultKind, TypeSymbol type, bool hasErrors = false) 7495public override LookupResultKind ResultKind { get; } 7500public BoundEventAccess Update(BoundExpression? receiverOpt, EventSymbol eventSymbol, bool isUsableAsField, LookupResultKind resultKind, TypeSymbol type)

1735return new BoundBadExpression(F.Syntax, LookupResultKind.Empty, ImmutableArray<Symbol>.Empty, ImmutableArray.Create<BoundExpression>(node), node.Type);

358return new BoundBadExpression(node.Syntax, default(LookupResultKind), ImmutableArray<Symbol>.Empty, ImmutableArray.Create<BoundExpression>(node), ExpressionType); 1141return new BoundBadExpression(node.Syntax, default(LookupResultKind), ImmutableArray<Symbol>.Empty, ImmutableArray.Create<BoundExpression>(node), node.Type); 1148return new BoundBadExpression(node.Syntax, default(LookupResultKind), ImmutableArray<Symbol>.Empty, ImmutableArray.Create<BoundExpression>(node), node.Type); 1180return new BoundBadExpression(node.Syntax, default(LookupResultKind), ImmutableArray<Symbol>.Empty, ImmutableArray.Create<BoundExpression>(node), node.Type);

322var result = new BoundFieldAccess(node.Syntax, new BoundThisReference(node.Syntax, primaryCtor.ContainingType), field, ConstantValue.NotAvailable, LookupResultKind.Viable, node.Type); 602return new BoundBadExpression(syntax, LookupResultKind.NotReferencable, ImmutableArray<Symbol?>.Empty, children, resultType);

145BoundExpression access = _localRewriter.MakeFieldAccess(f.Syntax, input, field, null, LookupResultKind.Viable, field.Type); 157return _factory.AssignmentExpression(output, _localRewriter.MakePropertyAccess(_factory.Syntax, input, property, LookupResultKind.Viable, property.Type, isLeftOfAssignment: false));

542new BoundBinaryOperator(syntax, operatorKind, constantValueOpt: null, methodOpt: null, constrainedToTypeOpt: null, LookupResultKind.Viable, loweredLeft, loweredRight, type); 757return new BoundUnaryOperator(syntax, UnaryOperatorKind.BoolLogicalNegation, converted, ConstantValue.NotAvailable, MethodSymbol.None, constrainedToTypeOpt: null, LookupResultKind.Viable, boolean) 2009new BoundUnaryOperator(syntax, UnaryOperatorKind.BoolLogicalNegation, call, ConstantValue.NotAvailable, null, constrainedToTypeOpt: null, LookupResultKind.Viable, returnType); 2039return new BoundBinaryOperator(syntax, operatorKind, constantValueOpt: null, methodOpt: null, constrainedToTypeOpt: null, LookupResultKind.Empty, loweredLeft, loweredRight, type); 2049? new BoundBinaryOperator(syntax, operatorKind, null, method, constrainedToTypeOpt: null, default(LookupResultKind), loweredLeft, loweredRight, method.ReturnType) 2179LookupResultKind.Viable, 2192LookupResultKind.Viable, 2304LookupResultKind.Viable,

462LookupResultKind resultKind, 549resultKind: LookupResultKind.Viable, 1532resultKind: LookupResultKind.Viable,

128clearCall = new BoundBadExpression(syntax, LookupResultKind.NotInvocable, ImmutableArray<Symbol?>.Empty, ImmutableArray.Create<BoundExpression>(removeDelegate), ErrorTypeSymbol.UnknownResultType); 170marshalCall = new BoundBadExpression(syntax, LookupResultKind.NotInvocable, ImmutableArray<Symbol?>.Empty, marshalArguments, ErrorTypeSymbol.UnknownResultType); 224LookupResultKind resultKind, 265getOrCreateCall = new BoundBadExpression(syntax, LookupResultKind.NotInvocable, ImmutableArray<Symbol?>.Empty, ImmutableArray.Create<BoundExpression>(fieldAccess), ErrorTypeSymbol.UnknownResultType); 287return new BoundBadExpression(syntax, LookupResultKind.NotInvocable, ImmutableArray<Symbol?>.Empty, ImmutableArray.Create(getOrCreateCall), ErrorTypeSymbol.UnknownResultType); 345return new BoundBadExpression(node.Syntax, LookupResultKind.NotCreatable, ImmutableArray.Create<Symbol?>(node.Event),

22LookupResultKind resultKind,

484helperCall = new BoundBadExpression(fixedInitializer.Syntax, LookupResultKind.NotInvocable, ImmutableArray<Symbol?>.Empty, ImmutableArray<BoundExpression>.Empty, ErrorTypeSymbol.UnknownResultType); 545lengthCall = new BoundBadExpression(fixedInitializer.Syntax, LookupResultKind.NotInvocable, ImmutableArray<Symbol?>.Empty, ImmutableArray.Create<BoundExpression>(factory.Local(pinnedTemp)), ErrorTypeSymbol.UnknownResultType);

462resultKind: LookupResultKind.Viable, 665resultKind: LookupResultKind.Viable, 961resultKind: LookupResultKind.Viable, 1165resultKind: LookupResultKind.Viable, 1261resultKind: LookupResultKind.Viable,

117exitCallExpr = new BoundBadExpression(lockSyntax, LookupResultKind.NotInvocable, ImmutableArray<Symbol?>.Empty, ImmutableArray.Create<BoundExpression>(boundLockTemp), ErrorTypeSymbol.UnknownResultType); 212enterCallExpr = new BoundBadExpression(lockSyntax, LookupResultKind.NotInvocable, ImmutableArray<Symbol?>.Empty, ImmutableArray.Create<BoundExpression>(boundLockTemp), ErrorTypeSymbol.UnknownResultType);

363resultKind: LookupResultKind.Viable, 394newGuid = new BoundBadExpression(node.Syntax, LookupResultKind.NotCreatable, ImmutableArray<Symbol?>.Empty, ImmutableArray<BoundExpression>.Empty, ErrorTypeSymbol.UnknownResultType); 412callGetTypeFromCLSID = new BoundBadExpression(node.Syntax, LookupResultKind.OverloadResolutionFailure, ImmutableArray<Symbol?>.Empty, ImmutableArray<BoundExpression>.Empty, ErrorTypeSymbol.UnknownResultType); 428rewrittenObjectCreation = new BoundBadExpression(node.Syntax, LookupResultKind.OverloadResolutionFailure, ImmutableArray<Symbol?>.Empty, ImmutableArray<BoundExpression>.Empty, node.Type);

30LookupResultKind resultKind, 86oldNodeOpt.Update(rewrittenReceiver, initialBindingReceiverIsSubjectToCloning: ThreeState.Unknown, property, autoPropertyAccessorKind: AccessorKind.Unknown, LookupResultKind.Viable, property.Type) : 87new BoundPropertyAccess(syntax, rewrittenReceiver, initialBindingReceiverIsSubjectToCloning: ThreeState.Unknown, property, autoPropertyAccessorKind: AccessorKind.Unknown, LookupResultKind.Viable, property.Type);

69resultKind: LookupResultKind.NotInvocable,

610currentResult = new BoundBinaryOperator(current.Syntax, current.OperatorKind, constantValueOpt: null, method, constrainedToTypeOpt: null, default(LookupResultKind), currentResult, right, current.Type);

228: new BoundBadExpression(syntax, LookupResultKind.Empty, symbols: ImmutableArray<Symbol?>.Empty, childBoundNodes: ImmutableArray<BoundExpression>.Empty, type);

159LookupResultKind.Viable, 176new BoundUnaryOperator(syntax, kind, loweredOperand, null, methodOpt: method, constrainedToTypeOpt: constrainedToTypeOpt, LookupResultKind.Viable, type);

463disposeCall = new BoundBadExpression(resourceSyntax, LookupResultKind.NotInvocable, ImmutableArray<Symbol?>.Empty, ImmutableArray.Create(disposedExpression), ErrorTypeSymbol.UnknownResultType); 534return MakeCall(null, syntax, expression, method, rewrittenArguments, argumentRefKindsOpt, LookupResultKind.Viable, temps.ToImmutableAndFree());

55var bad = new BoundBadExpression(children[0].Syntax, LookupResultKind.Empty, ImmutableArray<Symbol?>.Empty, children, resultType);

241return new BoundBadExpression(Syntax, LookupResultKind.Empty, ImmutableArray<Symbol?>.Empty, ImmutableArray<BoundExpression>.Empty, type, hasErrors: true); 251return new BoundFieldAccess(Syntax, receiver, f, ConstantValue.NotAvailable, LookupResultKind.Viable, f.Type) { WasCompilerGenerated = true }; 645return new BoundBinaryOperator(this.Syntax, kind, ConstantValue.NotAvailable, methodOpt: null, constrainedToTypeOpt: null, LookupResultKind.Viable, left, right, type) { WasCompilerGenerated = true }; 818return new BoundBadExpression(Syntax, default(LookupResultKind), ImmutableArray<Symbol?>.Empty, args.AsImmutable(), receiver); 883invokedAsExtensionMethod: false, argsToParamsOpt: default(ImmutableArray<int>), defaultArguments: default(BitVector), resultKind: LookupResultKind.Viable, 924argsToParamsOpt: ImmutableArray<int>.Empty, defaultArguments: default(BitVector), resultKind: LookupResultKind.Viable, type: method.ReturnType) 1637return new BoundUnaryOperator(expression.Syntax, UnaryOperatorKind.BoolLogicalNegation, expression, null, null, constrainedToTypeOpt: null, LookupResultKind.Viable, expression.Type); 1884new BoundUnaryOperator(syntax, UnaryOperatorKind.BoolLogicalNegation, call, ConstantValue.NotAvailable, methodOpt: null, constrainedToTypeOpt: null, LookupResultKind.Viable, returnType);

485if (boundFunctionPointerInvocation.ResultKind != LookupResultKind.Viable) 638if (!boundIndexerAccess.OriginalIndexersOpt.IsDefault || boundIndexerAccess.ResultKind == LookupResultKind.OverloadResolutionFailure) 709=> boundObjectCreationExpression is { ResultKind: not LookupResultKind.OverloadResolutionFailure, Constructor.OriginalDefinition: not ErrorMethodSymbol }; 902if (accessor == null || boundObjectInitializerMember.ResultKind == LookupResultKind.OverloadResolutionFailure || accessor.OriginalDefinition is ErrorMethodSymbol)

121private bool IsMethodInvalid(LookupResultKind resultKind, MethodSymbol targetMethod) => 122resultKind == LookupResultKind.OverloadResolutionFailure || targetMethod?.OriginalDefinition is ErrorMethodSymbol;

35internal virtual LookupResultKind ResultKind { get { return LookupResultKind.Empty; } } 73Debug.Assert(ResultKind != LookupResultKind.Viable, "Shouldn't have viable result kind on error symbol"); 645internal override LookupResultKind ResultKind

26private readonly LookupResultKind _resultKind; // why the guessSymbols were wrong. 49_resultKind = LookupResultKind.Empty; 52private ExtendedErrorTypeSymbol(NamespaceOrTypeSymbol? containingSymbol, string name, int arity, DiagnosticInfo? errorInfo, bool unreported, bool variableUsedBeforeDeclaration, ImmutableArray<Symbol> candidateSymbols, LookupResultKind resultKind) 64internal ExtendedErrorTypeSymbol(NamespaceOrTypeSymbol guessSymbol, LookupResultKind resultKind, DiagnosticInfo errorInfo, bool unreported = false) 69internal ExtendedErrorTypeSymbol(NamespaceOrTypeSymbol? containingSymbol, Symbol guessSymbol, LookupResultKind resultKind, DiagnosticInfo errorInfo, bool unreported = false) 74internal ExtendedErrorTypeSymbol(NamespaceOrTypeSymbol? containingSymbol, ImmutableArray<Symbol> candidateSymbols, LookupResultKind resultKind, DiagnosticInfo errorInfo, int arity, bool unreported = false) 79Debug.Assert(candidateSymbols.IsEmpty || resultKind != LookupResultKind.Viable, "Shouldn't use LookupResultKind.Viable with candidate symbols"); 107internal override LookupResultKind ResultKind

2154return new ExtendedErrorTypeSymbol(declaredBase, LookupResultKind.NotReferencable, info, true);

309return new ExtendedErrorTypeSymbol(declaredBase, LookupResultKind.NotReferencable, info, true);

342baseType = new ExtendedErrorTypeSymbol(baseType, LookupResultKind.Ambiguous, info); 540localBase = new ExtendedErrorTypeSymbol(localBase, LookupResultKind.NotReferencable, info); 692result.Add(new ExtendedErrorTypeSymbol(t, LookupResultKind.NotReferencable, 780return new ExtendedErrorTypeSymbol(declaredBase, LookupResultKind.NotReferencable,

308resultKind: LookupResultKind.Viable, 374resultKind: LookupResultKind.Viable, 400resultKind: LookupResultKind.Viable,

47Assert.Equal(LookupResultKind.Inaccessible, baseType.GetSymbol<ErrorTypeSymbol>().ResultKind); // Script class members are private.

450Assert.True(lookupResult.IsMultiViable || lookupResult.Kind == LookupResultKind.NotReferencable);

5529Assert.Equal(LookupResultKind.Viable, lookupResult.Kind);

2081Assert.Equal(LookupResultKind.OverloadResolutionFailure, elementConversion.ResultKind);