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; 555Debug.Assert(resultKind == LookupResultKind.Viable || wasError); 600private Symbol BindNamedAttributeArgumentName(AttributeArgumentSyntax namedArgument, NamedTypeSymbol attributeType, BindingDiagnosticBag diagnostics, out bool wasError, out LookupResultKind resultKind) 669LookupResultKind.NotAVariable, 682LookupResultKind.NotAVariable,

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

1377resultKind: LookupResultKind.Viable).MakeCompilerGenerated(); 1963if (resolution.ResultKind != LookupResultKind.Viable) 2298? 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) 2516return BadExpression(node, LookupResultKind.NotLabel); 2875if (conversion.ResultKind == LookupResultKind.OverloadResolutionFailure) 3359LookupResultKind.Viable, 4324LookupResultKind.Empty, 4593LookupResultKind.NotCreatable, //in this context, anyway 4632LookupResultKind.Empty, 4964resultKind: LookupResultKind.Empty, 4975resultKind: LookupResultKind.Empty, 5018resultKind: LookupResultKind.Empty, 5176resultKind: LookupResultKind.Viable, 5188resultKind: LookupResultKind.OverloadResolutionFailure, 5313type = new ExtendedErrorTypeSymbol(type, LookupResultKind.NotCreatable, 5323type = new ExtendedErrorTypeSymbol(type, LookupResultKind.NotCreatable, 5341return new BoundBadExpression(syntax, LookupResultKind.Empty, ImmutableArray<Symbol?>.Empty, ImmutableArray<BoundExpression>.Empty, CreateErrorType()); 5467arg.Syntax, LookupResultKind.Empty, symbols: [], 5632return new BoundBadExpression(node, LookupResultKind.NotInvocable, StaticCast<Symbol>.From(type.InstanceConstructors), ImmutableArray.Create(argument), type); 5643sourceDelegate.DelegateInvokeMethod, null, BoundMethodGroupFlags.None, functionType: null, argument, LookupResultKind.Viable); 5679return new BoundBadExpression(node, LookupResultKind.OverloadResolutionFailure, StaticCast<Symbol>.From(type.InstanceConstructors), childNodes, type); 5776return new BoundBadExpression(node, LookupResultKind.NotCreatable, ImmutableArray.Create<Symbol?>(type), children.ToImmutableAndFree(), type) { WasCompilerGenerated = wasCompilerGenerated }; 5944LookupResultKind.Empty, 5964return BindToTypeForErrorRecovery(ToBadExpression(boundExpression, LookupResultKind.NotAValue)); 6002LookupResultKind resultKind; 6105resultKind = LookupResultKind.NotAValue; 6190resultKind = isRhsNestedInitializer ? LookupResultKind.NotAValue : LookupResultKind.NotAVariable; 6215ref LookupResultKind resultKind) 6227resultKind = LookupResultKind.NotAValue; 6257case LookupResultKind.Empty: 6261case LookupResultKind.Inaccessible: 6272return ToBadExpression(boundMember, (valueKind == BindValueKind.RValue) ? LookupResultKind.NotAValue : LookupResultKind.NotAVariable); 6570return BadExpression(elementInitializer, LookupResultKind.NotInvocable); 6611return BadExpression(elementInitializer, LookupResultKind.NotInvocable, ImmutableArray<Symbol>.Empty, boundElementInitializerExpressions); 7046LookupResultKind resultKind; 7051resultKind = LookupResultKind.NotCreatable; 7055resultKind = LookupResultKind.Inaccessible; 7059resultKind = LookupResultKind.OverloadResolutionFailure; 7244return new BoundBadExpression(node, LookupResultKind.OverloadResolutionFailure, ImmutableArray<Symbol>.Empty, children, interfaceType); 8069return new BoundBadExpression(node, LookupResultKind.Ambiguous, lookupResult.Symbols.AsImmutable(), ImmutableArray.Create(AdjustBadExpressionChild(boundLeft)), CreateErrorType(rightName), hasErrors: true); 8091else if (lookupResult.Kind == LookupResultKind.WrongArity) 8101else if (lookupResult.Kind == LookupResultKind.Empty) 8144return BadExpression(node, LookupResultKind.NotAValue, boundLeft); 8288return BindPropertyAccess(syntax, receiver, propertySymbol, diagnostics, LookupResultKind.Viable, hasErrors: false); 8292return new BoundBadExpression(syntax, LookupResultKind.Viable, errorTypeSymbol.CandidateSymbols!, [AdjustBadExpressionChild(receiver)], CreateErrorType()); 8523LookupResultKind lookupKind) 8940result = new MethodGroupResolution(bestProperty, LookupResultKind.Viable, diagnostics.ToReadOnly()); 9111ExtendedErrorTypeSymbol resultSymbol = new ExtendedErrorTypeSymbol(containingSymbol: null, symbols, LookupResultKind.OverloadResolutionFailure, errorInfo, arity); 9112Debug.Assert(lookupResult.Kind == LookupResultKind.Viable); 9130LookupResultKind resultKind, 9309LookupResultKind lookupResult, 9395LookupResultKind lookupResult, 9445ref LookupResultKind resultKind, 9465resultKind = LookupResultKind.StaticInstanceMismatch; 9474resultKind = LookupResultKind.StaticInstanceMismatch; 9499Debug.Assert(result.Kind != LookupResultKind.Empty); 9921return new BoundBadExpression(node, LookupResultKind.Empty, ImmutableArray<Symbol>.Empty, childBoundNodes, CreateErrorType(), hasErrors: true); 10774method, lookupError: null, BoundMethodGroupFlags.None, functionType: null, receiver, LookupResultKind.Viable) 11001LookupResultKind methodResultKind = methodResolution.ResultKind; 11002LookupResultKind extensionMethodResultKind = extensionMethodResolution.ResultKind; 11317if (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) 1367argsToParamsOpt: argsToParams, defaultArguments, resultKind: LookupResultKind.Viable, type: returnType, hasErrors: gotError); 2044LookupResultKind resultKind, 2324LookupResultKind resultKind, 2572LookupResultKind.OverloadResolutionFailure, 2592LookupResultKind.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); 326LookupResultKind resultKind, 522resultKind: LookupResultKind.Viable, 543resultKind: LookupResultKind.OverloadResolutionFailure, 583out LookupResultKind staticResultKind, 587staticResultKind = LookupResultKind.Empty; 851resultKind: LookupResultKind.Viable, 949return new BoundBinaryOperator(node, kind, ConstantValue.NotAvailable, methodOpt: null, constrainedToTypeOpt: null, LookupResultKind.Empty, left, right, GetBinaryOperatorErrorType(kind, diagnostics, node), true); 990return new BoundBinaryOperator(node, BinaryOperatorKind.StringConcatenation, BoundBinaryOperator.UncommonData.UnconvertedInterpolatedStringAddition(stringConstant), LookupResultKind.Empty, left, right, right.Type); 1008LookupResultKind resultKind; 1135ref OperatorResolutionForReporting operatorResolutionForReporting, out LookupResultKind resultKind, 1140resultKind = LookupResultKind.OverloadResolutionFailure; 1159ref LookupResultKind resultKind, 1220LookupResultKind extensionResultKind; 1284private void ReportUnaryOperatorError(CSharpSyntaxNode node, BindingDiagnosticBag diagnostics, string operatorName, BoundExpression operand, LookupResultKind resultKind, ref OperatorResolutionForReporting operatorResolutionForReporting) 1297ErrorCode errorCode = resultKind == LookupResultKind.Ambiguous ? 1305LookupResultKind resultKind, ref OperatorResolutionForReporting operatorResolutionForReporting) 1325LookupResultKind resultKind, ref OperatorResolutionForReporting operatorResolutionForReporting) 1363case LookupResultKind.Ambiguous: 1367case LookupResultKind.OverloadResolutionFailure when operatorToken.Kind() is SyntaxKind.PlusToken && isReadOnlySpanOfByte(left.Type) && isReadOnlySpanOfByte(right.Type): 1448resultKind: LookupResultKind.Viable, left, right, type: left.Type, hasErrors: constantValue != null && constantValue.IsBad); 1458resultKind: LookupResultKind.Empty, left, right, type: GetBinaryOperatorErrorType(kind, diagnostics, node), hasErrors: true); 1468LookupResultKind lookupResult; 1474lookupResult = LookupResultKind.OverloadResolutionFailure; 2036out LookupResultKind resultKind, 2054out LookupResultKind resultKind, 2059Debug.Assert(resultKind is LookupResultKind.Viable or LookupResultKind.Ambiguous or LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 2060Debug.Assert(possiblyBest.HasValue == (resultKind is LookupResultKind.Viable)); 2061Debug.Assert(resultKind is not (LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty) || originalUserDefinedOperators.IsEmpty); 2063if (!possiblyBest.HasValue && resultKind != LookupResultKind.Ambiguous) 2065Debug.Assert(resultKind is LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 2068LookupResultKind extensionResultKind; 2095out LookupResultKind resultKind, 2098resultKind = LookupResultKind.Empty; 2155out LookupResultKind resultKind, 2169Debug.Assert(resultKind is LookupResultKind.Viable or LookupResultKind.Ambiguous or LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 2170Debug.Assert(possiblyBest.HasValue == (resultKind is LookupResultKind.Viable)); 2171Debug.Assert(resultKind is not (LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty) || originalUserDefinedOperators.IsEmpty); 2176private static BinaryOperatorAnalysisResult BinaryOperatorAnalyzeOverloadResolutionResult(BinaryOperatorOverloadResolutionResult result, out LookupResultKind resultKind, out ImmutableArray<MethodSymbol> originalUserDefinedOperators) 2195resultKind = LookupResultKind.Viable; 2199resultKind = LookupResultKind.Ambiguous; 2203resultKind = LookupResultKind.OverloadResolutionFailure; 2209resultKind = possiblyBest.HasValue ? LookupResultKind.Viable : LookupResultKind.Empty; 2259out LookupResultKind resultKind, 2267Debug.Assert(resultKind is LookupResultKind.Viable or LookupResultKind.Ambiguous or LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 2268Debug.Assert(best.HasValue == (resultKind is LookupResultKind.Viable)); 2269Debug.Assert(resultKind is not (LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty) || originalUserDefinedOperators.IsEmpty); 2271if (!best.HasValue && resultKind != LookupResultKind.Ambiguous) 2273Debug.Assert(resultKind is LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 2276LookupResultKind extensionResultKind; 2301out LookupResultKind resultKind, 2316Debug.Assert(resultKind is LookupResultKind.Viable or LookupResultKind.Ambiguous or LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 2317Debug.Assert(possiblyBest.HasValue == (resultKind is LookupResultKind.Viable)); 2318Debug.Assert(resultKind is not (LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty) || originalUserDefinedOperators.IsEmpty); 2329out LookupResultKind resultKind, 2349resultKind = LookupResultKind.Viable; 2364resultKind = LookupResultKind.OverloadResolutionFailure; 2368resultKind = LookupResultKind.Ambiguous; 2373resultKind = LookupResultKind.OverloadResolutionFailure; 2379resultKind = possiblyBest.HasValue ? LookupResultKind.Viable : LookupResultKind.Empty; 2407out LookupResultKind resultKind, 2410resultKind = LookupResultKind.Empty; 3268LookupResultKind.Empty, 3289resultKind: LookupResultKind.Viable, 3315LookupResultKind resultKind; 3319Debug.Assert(resultKind is LookupResultKind.Viable or LookupResultKind.Ambiguous or LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 3320Debug.Assert(best.HasValue == (resultKind is LookupResultKind.Viable)); 3321Debug.Assert(resultKind is not (LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty) || originalUserDefinedOperators.IsEmpty); 3323if (!best.HasValue && resultKind != LookupResultKind.Ambiguous) 3325Debug.Assert(resultKind is LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 3329LookupResultKind staticExtensionResultKind; 3342Debug.Assert(instanceExtensionResult.ResultKind is LookupResultKind.Viable || !instanceExtensionResult.OriginalUserDefinedOperatorsOpt.IsDefaultOrEmpty); 3603LookupResultKind.Viable, 3628LookupResultKind.OverloadResolutionFailure, 3667out LookupResultKind staticResultKind, 3673staticResultKind = LookupResultKind.Empty; 4340resultKind: LookupResultKind.Empty, 4361resultKind: LookupResultKind.Viable, 4365LookupResultKind resultKind;

587lengthAccess = new BoundPropertyAccess(node, receiverPlaceholder, initialBindingReceiverIsSubjectToCloning: ThreeState.False, lengthProperty, autoPropertyAccessorKind: AccessorKind.Unknown, LookupResultKind.Viable, lengthProperty.Type) { WasCompilerGenerated = true }; 591lengthAccess = new BoundBadExpression(node, LookupResultKind.Empty, ImmutableArray<Symbol?>.Empty, ImmutableArray<BoundExpression>.Empty, CreateErrorType(), hasErrors: true) { WasCompilerGenerated = true }; 2008case LookupResultKind.Empty: 2012case 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); 3995LookupResultKind resultKind = LookupResultKind.Viable; 4025resultKind = LookupResultKind.Inaccessible; 4095resultKind: LookupResultKind.Viable, 4233if (call.ResultKind == LookupResultKind.Empty)

224case LookupResultKind.Empty: 230case LookupResultKind.Viable: 345return TypeWithAnnotations.Create(new ExtendedErrorTypeSymbol(GetContainingNamespaceOrNonExtensionType(symbol.Symbol), symbol.Symbol, LookupResultKind.NotATypeOrNamespace, diagnosticInfo)); 596return TypeWithAnnotations.Create(new ExtendedErrorTypeSymbol(left, LookupResultKind.NotATypeOrNamespace, diagnostics.Add(ErrorCode.ERR_ColColWithTypeAlias, node.Alias.Location, node.Alias.Identifier.Text))); 1522receiver = new BoundBadExpression(receiver.Syntax, LookupResultKind.Ambiguous, ImmutableArray<Symbol>.Empty, ImmutableArray.Create(receiver), receiver.Type, hasErrors: true).MakeCompilerGenerated(); 1532receiver = new BoundBadExpression(receiver.Syntax, LookupResultKind.Empty, ImmutableArray<Symbol>.Empty, childBoundNodes: [AdjustBadExpressionChild(receiver)], receiver.Type, hasErrors: true).MakeCompilerGenerated(); 2324LookupResultKind.Ambiguous, 2340singleResult = new ExtendedErrorTypeSymbol(GetContainingNamespaceOrNonExtensionType(singleResult), singleResult, LookupResultKind.NotReferencable, errorInfo); // UNDONE: Review resultkind. 2386if (result.Kind == LookupResultKind.Empty) 2424result.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)

747LookupResultKind.Empty, 960if (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;

1085internal LookupResultKind ResultKind 1094return LookupResultKind.Viable; 1098return LookupResultKind.OverloadResolutionFailure; 1102return this.Kind == ConversionKind.NoConversion ? LookupResultKind.Empty : LookupResultKind.Viable; 1109return LookupResultKind.OverloadResolutionFailure;

386resolution.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);

468return 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 && 3619Debug.Assert(resultKind != LookupResultKind.Viable); 3698resultKind = resultKind.WorseResultKind(LookupResultKind.OverloadResolutionFailure); 3756private static ParameterSymbol GetThisParameter(TypeSymbol typeOfThis, NamedTypeSymbol containingType, Symbol containingMember, out LookupResultKind resultKind) 3761resultKind = LookupResultKind.NotReferencable; 3774resultKind = LookupResultKind.NotReferencable; 3780resultKind = LookupResultKind.StaticInstanceMismatch; 3789resultKind = LookupResultKind.NotReferencable; 3796resultKind = LookupResultKind.Viable; 3804resultKind = LookupResultKind.NotReferencable; 3817resultKind = LookupResultKind.NotReferencable; 3824private static void GetSymbolsAndResultKind(BoundUnaryOperator unaryOperator, out bool isDynamic, ref LookupResultKind resultKind, ref OneOrMany<Symbol> symbols) 3829if (operandType == 0 || operandType == UnaryOperatorKind.UserDefined || unaryOperator.ResultKind != LookupResultKind.Viable) 3847private static void GetSymbolsAndResultKind(BoundIncrementOperator increment, out bool isDynamic, ref LookupResultKind resultKind, ref OneOrMany<Symbol> symbols) 3852if (operandType == 0 || operandType == UnaryOperatorKind.UserDefined || increment.ResultKind != LookupResultKind.Viable) 3871private static void GetSymbolsAndResultKind(BoundBinaryOperator binaryOperator, out bool isDynamic, ref LookupResultKind resultKind, ref OneOrMany<Symbol> symbols) 3877if (operandType == 0 || operandType == BinaryOperatorKind.UserDefined || binaryOperator.ResultKind != LookupResultKind.Viable || binaryOperator.OperatorKind.IsLogical()) 3944private static void GetSymbolsAndResultKind(BoundCompoundAssignmentOperator compoundAssignment, out bool isDynamic, ref LookupResultKind resultKind, ref OneOrMany<Symbol> symbols) 3950if (operandType == 0 || operandType == BinaryOperatorKind.UserDefined || compoundAssignment.ResultKind != LookupResultKind.Viable) 3970private static void GetSymbolsAndResultKind(BoundExpression node, Symbol symbolOpt, ImmutableArray<MethodSymbol> originalCandidates, out OneOrMany<Symbol> symbols, out LookupResultKind resultKind) 3985resultKind = LookupResultKind.Empty; 3996ref LookupResultKind resultKind, 4018Debug.Assert(resultKind != LookupResultKind.Viable || 4049ref LookupResultKind resultKind, 4079Debug.Assert(resultKind != LookupResultKind.Viable); 4096Debug.Assert(resultKind != LookupResultKind.Viable); 4097resultKind = resultKind.WorseResultKind(LookupResultKind.OverloadResolutionFailure); 4267out LookupResultKind resultKind, 4276if (resultKind == LookupResultKind.Empty) 4278resultKind = LookupResultKind.Viable; 4303resultKind = LookupResultKind.Viable; 4307resultKind = call.ResultKind.WorseResultKind(LookupResultKind.OverloadResolutionFailure); 4374resultKind = resultKind.WorseResultKind(LookupResultKind.MemberGroup); 4381resultKind = resultKind.WorseResultKind(LookupResultKind.OverloadResolutionFailure); 4396resultKind = resultKind.WorseResultKind(LookupResultKind.OverloadResolutionFailure); 4406if (!isDynamic && resultKind > LookupResultKind.OverloadResolutionFailure) 4408resultKind = LookupResultKind.OverloadResolutionFailure; 4420out LookupResultKind resultKind, 4428if (resultKind == LookupResultKind.Empty) 4430resultKind = LookupResultKind.Viable; 4452resultKind = LookupResultKind.Viable; 4456resultKind = indexer.ResultKind.WorseResultKind(LookupResultKind.OverloadResolutionFailure); 4491if (resultKind > LookupResultKind.OverloadResolutionFailure) 4493resultKind = LookupResultKind.OverloadResolutionFailure; 4596var resultKind = LookupResultKind.Empty; 4732ref LookupResultKind resultKind, 4742LookupResultKind singleKind = singleResult.Kind; 4751resultKind = LookupResultKind.Empty; 4763Debug.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,

992public BoundBadExpression(SyntaxNode syntax, LookupResultKind resultKind, ImmutableArray<Symbol?> symbols, ImmutableArray<BoundExpression> childBoundNodes, TypeSymbol? type, bool hasErrors = false) 1008public override LookupResultKind ResultKind { get; } 1015public BoundBadExpression Update(LookupResultKind resultKind, ImmutableArray<Symbol?> symbols, ImmutableArray<BoundExpression> childBoundNodes, TypeSymbol? type) 1210public BoundUnaryOperator(SyntaxNode syntax, UnaryOperatorKind operatorKind, BoundExpression operand, ConstantValue? constantValueOpt, MethodSymbol? methodOpt, TypeSymbol? constrainedToTypeOpt, LookupResultKind resultKind, ImmutableArray<MethodSymbol> originalUserDefinedOperatorsOpt, TypeSymbol type, bool hasErrors = false) 1232public override LookupResultKind ResultKind { get; } 1238public BoundUnaryOperator Update(UnaryOperatorKind operatorKind, BoundExpression operand, ConstantValue? constantValueOpt, MethodSymbol? methodOpt, TypeSymbol? constrainedToTypeOpt, LookupResultKind resultKind, ImmutableArray<MethodSymbol> originalUserDefinedOperatorsOpt, TypeSymbol type) 1252public 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) 1280public override LookupResultKind ResultKind { get; } 1286public 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) 1473public BoundFunctionPointerInvocation(SyntaxNode syntax, BoundExpression invokedExpression, ImmutableArray<BoundExpression> arguments, ImmutableArray<RefKind> argumentRefKindsOpt, LookupResultKind resultKind, TypeSymbol type, bool hasErrors = false) 1491public override LookupResultKind ResultKind { get; } 1496public BoundFunctionPointerInvocation Update(BoundExpression invokedExpression, ImmutableArray<BoundExpression> arguments, ImmutableArray<RefKind> argumentRefKindsOpt, LookupResultKind resultKind, TypeSymbol type) 1688public BoundBinaryOperator(SyntaxNode syntax, BinaryOperatorKind operatorKind, BoundBinaryOperator.UncommonData? data, LookupResultKind resultKind, BoundExpression left, BoundExpression right, TypeSymbol type, bool hasErrors = false) 1707public override LookupResultKind ResultKind { get; } 1712public BoundBinaryOperator Update(BinaryOperatorKind operatorKind, BoundBinaryOperator.UncommonData? data, LookupResultKind resultKind, BoundExpression left, BoundExpression right, TypeSymbol type) 1764public 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) 1797public override LookupResultKind ResultKind { get; } 1803public 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) 1817public 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) 1844public override LookupResultKind ResultKind { get; } 1850public BoundCompoundAssignmentOperator Update(BinaryOperatorSignature @operator, BoundExpression left, BoundExpression right, BoundValuePlaceholder? leftPlaceholder, BoundExpression? leftConversion, BoundValuePlaceholder? finalPlaceholder, BoundExpression? finalConversion, LookupResultKind resultKind, ImmutableArray<MethodSymbol> originalUserDefinedOperatorsOpt, TypeSymbol type) 5813protected BoundMethodOrPropertyGroup(BoundKind kind, SyntaxNode syntax, BoundExpression? receiverOpt, LookupResultKind resultKind, bool hasErrors = false) 5822public override LookupResultKind ResultKind { get; } 6164public 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) 6191public BoundMethodGroup Update(ImmutableArray<TypeWithAnnotations> typeArgumentsOpt, string name, ImmutableArray<MethodSymbol> methods, Symbol? lookupSymbolOpt, DiagnosticInfo? lookupError, BoundMethodGroupFlags? flags, FunctionTypeSymbol? functionType, BoundExpression? receiverOpt, LookupResultKind resultKind) 6205public BoundPropertyGroup(SyntaxNode syntax, ImmutableArray<PropertySymbol> properties, BoundExpression? receiverOpt, LookupResultKind resultKind, bool hasErrors = false) 6219public BoundPropertyGroup Update(ImmutableArray<PropertySymbol> properties, BoundExpression? receiverOpt, LookupResultKind resultKind) 6233public 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) 6272public override LookupResultKind ResultKind { get; } 6278public 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) 6331public 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) 6357public override LookupResultKind ResultKind { get; } 6362public BoundAttribute Update(MethodSymbol? constructor, ImmutableArray<BoundExpression> constructorArguments, ImmutableArray<string?> constructorArgumentNamesOpt, ImmutableArray<int> constructorArgumentsToParamsOpt, bool constructorExpanded, BitVector constructorDefaultArguments, ImmutableArray<BoundAssignmentOperator> namedArguments, LookupResultKind resultKind, TypeSymbol type) 6879public 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) 6907public override LookupResultKind ResultKind { get; } 6914public 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) 7001public 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) 7027public override LookupResultKind ResultKind { get; } 7032public BoundCollectionElementInitializer Update(MethodSymbol addMethod, ImmutableArray<BoundExpression> arguments, BoundExpression? implicitReceiverOpt, bool expanded, ImmutableArray<int> argsToParamsOpt, BitVector defaultArguments, bool invokedAsExtensionMethod, LookupResultKind resultKind, TypeSymbol type) 7393public BoundFieldAccess(SyntaxNode syntax, BoundExpression? receiverOpt, FieldSymbol fieldSymbol, ConstantValue? constantValueOpt, LookupResultKind resultKind, bool isByValue, bool isDeclaration, TypeSymbol type, bool hasErrors = false) 7412public override LookupResultKind ResultKind { get; } 7419public BoundFieldAccess Update(BoundExpression? receiverOpt, FieldSymbol fieldSymbol, ConstantValue? constantValueOpt, LookupResultKind resultKind, bool isByValue, bool isDeclaration, TypeSymbol type) 7473public BoundPropertyAccess(SyntaxNode syntax, BoundExpression? receiverOpt, ThreeState initialBindingReceiverIsSubjectToCloning, PropertySymbol propertySymbol, AccessorKind autoPropertyAccessorKind, LookupResultKind resultKind, TypeSymbol type, bool hasErrors = false) 7492public override LookupResultKind ResultKind { get; } 7497public BoundPropertyAccess Update(BoundExpression? receiverOpt, ThreeState initialBindingReceiverIsSubjectToCloning, PropertySymbol propertySymbol, AccessorKind autoPropertyAccessorKind, LookupResultKind resultKind, TypeSymbol type) 7511public BoundEventAccess(SyntaxNode syntax, BoundExpression? receiverOpt, EventSymbol eventSymbol, bool isUsableAsField, LookupResultKind resultKind, TypeSymbol type, bool hasErrors = false) 7528public override LookupResultKind ResultKind { get; } 7533public 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); 1143return new BoundBadExpression(node.Syntax, default(LookupResultKind), ImmutableArray<Symbol>.Empty, ImmutableArray.Create<BoundExpression>(node), node.Type); 1150return new BoundBadExpression(node.Syntax, default(LookupResultKind), ImmutableArray<Symbol>.Empty, ImmutableArray.Create<BoundExpression>(node), node.Type); 1182return 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, 1533resultKind: 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);

468resultKind: LookupResultKind.Viable, 673resultKind: LookupResultKind.Viable, 969resultKind: LookupResultKind.Viable, 1173resultKind: LookupResultKind.Viable, 1269resultKind: 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"); 647internal 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

2176return new ExtendedErrorTypeSymbol(declaredBase, LookupResultKind.NotReferencable, info, true);

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

342baseType = new ExtendedErrorTypeSymbol(baseType, LookupResultKind.Ambiguous, info); 554localBase = new ExtendedErrorTypeSymbol(localBase, LookupResultKind.NotReferencable, info); 706result.Add(new ExtendedErrorTypeSymbol(t, LookupResultKind.NotReferencable, 794return new ExtendedErrorTypeSymbol(declaredBase, LookupResultKind.NotReferencable,

308resultKind: LookupResultKind.Viable, 376resultKind: LookupResultKind.Viable, 402resultKind: LookupResultKind.Viable,

8561Assert.Equal(LookupResultKind.Viable, conversion.ResultKind); 10725Assert.Equal(LookupResultKind.Viable, conversion.ResultKind); 11368Assert.Equal(LookupResultKind.Viable, conversion.ResultKind); 11439Assert.Equal(LookupResultKind.Viable, conversion.ResultKind); 11510Assert.Equal(LookupResultKind.Viable, conversion.ResultKind);

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);