862Debug.Assert(methodGroup.ResultKind != LookupResultKind.Viable); 892var resultKind = (valueKind == BindValueKind.RValue || valueKind == BindValueKind.RValueOrMethodGroup) ? 893LookupResultKind.NotAValue : 894LookupResultKind.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,

382resultKind: LookupResultKind.Viable, 523resultKind: LookupResultKind.Viable,

1391if (resolution.ResultKind != LookupResultKind.Viable)

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

956resultKind: LookupResultKind.Viable,

114return BadExpression(syntax, LookupResultKind.Empty, ImmutableArray<Symbol>.Empty); 122return BadExpression(syntax, LookupResultKind.Empty, ImmutableArray<Symbol>.Empty, childNode); 130return BadExpression(syntax, LookupResultKind.Empty, ImmutableArray<Symbol>.Empty, childNodes); 136protected BoundBadExpression BadExpression(SyntaxNode syntax, LookupResultKind lookupResultKind) 144protected BoundBadExpression BadExpression(SyntaxNode syntax, LookupResultKind lookupResultKind, BoundExpression childNode) 152private BoundBadExpression BadExpression(SyntaxNode syntax, LookupResultKind resultKind, ImmutableArray<Symbol> symbols) 165private BoundBadExpression BadExpression(SyntaxNode syntax, LookupResultKind resultKind, ImmutableArray<Symbol> symbols, BoundExpression childNode) 178private BoundBadExpression BadExpression(SyntaxNode syntax, LookupResultKind resultKind, ImmutableArray<Symbol> symbols, ImmutableArray<BoundExpression> childNodes, bool wasCompilerGenerated = false) 200private BoundExpression ToBadExpression(BoundExpression expr, LookupResultKind resultKind = LookupResultKind.Empty) 203Debug.Assert(resultKind != LookupResultKind.Viable); 589return BadExpression(node, LookupResultKind.NotAValue); 596return BadExpression(node, LookupResultKind.NotAValue); 867node, LookupResultKind.Empty, ImmutableArray<Symbol>.Empty, ImmutableArray.Create<BoundExpression>(BindToTypeForErrorRecovery(BindValue(node.Expression, BindingDiagnosticBag.Discarded, BindValueKind.RefersToLocation))), 1054argumentSyntax, LookupResultKind.Empty, ImmutableArray<Symbol>.Empty, 1503bool result = lookupResult.Kind != LookupResultKind.Empty; 1665if (lookupResult.Kind != LookupResultKind.Empty) 1709resultKind: LookupResultKind.WrongArity, 1837if (lookupResult.Kind != LookupResultKind.Empty) 2017private BoundExpression BindNonMethod(SimpleNameSyntax node, Symbol symbol, BindingDiagnosticBag diagnostics, LookupResultKind resultKind, bool indexed, bool isError) 2454return BadExpression(node, LookupResultKind.NotLabel); 2813if (conversion.ResultKind == LookupResultKind.OverloadResolutionFailure) 3297LookupResultKind.Viable, 4258LookupResultKind.Empty, 4527LookupResultKind.NotCreatable, //in this context, anyway 4566LookupResultKind.Empty, 4898resultKind: LookupResultKind.Empty, 4909resultKind: LookupResultKind.Empty, 4952resultKind: LookupResultKind.Empty, 5109resultKind: LookupResultKind.Viable, 5121resultKind: LookupResultKind.OverloadResolutionFailure, 5246type = new ExtendedErrorTypeSymbol(type, LookupResultKind.NotCreatable, 5256type = new ExtendedErrorTypeSymbol(type, LookupResultKind.NotCreatable, 5274return new BoundBadExpression(syntax, LookupResultKind.Empty, ImmutableArray<Symbol?>.Empty, ImmutableArray<BoundExpression>.Empty, CreateErrorType()); 5489return new BoundBadExpression(node, LookupResultKind.NotInvocable, StaticCast<Symbol>.From(type.InstanceConstructors), ImmutableArray.Create(argument), type); 5500sourceDelegate.DelegateInvokeMethod, null, BoundMethodGroupFlags.None, functionType: null, argument, LookupResultKind.Viable); 5536return new BoundBadExpression(node, LookupResultKind.OverloadResolutionFailure, StaticCast<Symbol>.From(type.InstanceConstructors), childNodes, type); 5633return new BoundBadExpression(node, LookupResultKind.NotCreatable, ImmutableArray.Create<Symbol?>(type), children.ToImmutableAndFree(), type) { WasCompilerGenerated = wasCompilerGenerated }; 5801LookupResultKind.Empty, 5821return BindToTypeForErrorRecovery(ToBadExpression(boundExpression, LookupResultKind.NotAValue)); 5859LookupResultKind resultKind; 5962resultKind = LookupResultKind.NotAValue; 6048resultKind = isRhsNestedInitializer ? LookupResultKind.NotAValue : LookupResultKind.NotAVariable; 6073ref LookupResultKind resultKind) 6085resultKind = LookupResultKind.NotAValue; 6115case LookupResultKind.Empty: 6119case LookupResultKind.Inaccessible: 6130return ToBadExpression(boundMember, (valueKind == BindValueKind.RValue) ? LookupResultKind.NotAValue : LookupResultKind.NotAVariable); 6428return BadExpression(elementInitializer, LookupResultKind.NotInvocable); 6469return BadExpression(elementInitializer, LookupResultKind.NotInvocable, ImmutableArray<Symbol>.Empty, boundElementInitializerExpressions); 6903LookupResultKind resultKind; 6908resultKind = LookupResultKind.NotCreatable; 6912resultKind = LookupResultKind.Inaccessible; 6916resultKind = LookupResultKind.OverloadResolutionFailure; 7101return new BoundBadExpression(node, LookupResultKind.OverloadResolutionFailure, ImmutableArray<Symbol>.Empty, children, interfaceType); 7858return new BoundBadExpression(node, LookupResultKind.Ambiguous, lookupResult.Symbols.AsImmutable(), ImmutableArray.Create(boundLeft), CreateErrorType(rightName), hasErrors: true); 7879else if (lookupResult.Kind == LookupResultKind.WrongArity) 7889else if (lookupResult.Kind == LookupResultKind.Empty) 7932return BadExpression(node, LookupResultKind.NotAValue, boundLeft); 8076return BindPropertyAccess(syntax, receiver, propertySymbol, diagnostics, LookupResultKind.Viable, hasErrors: false); 8080return new BoundBadExpression(syntax, LookupResultKind.Viable, errorTypeSymbol.CandidateSymbols!, [receiver], CreateErrorType()); 8307LookupResultKind lookupKind) 8723result = new MethodGroupResolution(bestProperty, LookupResultKind.Viable, diagnostics.ToReadOnly()); 8894ExtendedErrorTypeSymbol resultSymbol = new ExtendedErrorTypeSymbol(containingSymbol: null, symbols, LookupResultKind.OverloadResolutionFailure, errorInfo, arity); 8895Debug.Assert(lookupResult.Kind == LookupResultKind.Viable); 8913LookupResultKind resultKind, 9073LookupResultKind lookupResult, 9153LookupResultKind lookupResult, 9198ref LookupResultKind resultKind, 9218resultKind = LookupResultKind.StaticInstanceMismatch; 9227resultKind = LookupResultKind.StaticInstanceMismatch; 9252Debug.Assert(result.Kind != LookupResultKind.Empty); 9665return new BoundBadExpression(node, LookupResultKind.Empty, ImmutableArray<Symbol>.Empty, childBoundNodes, CreateErrorType(), hasErrors: true); 10517method, lookupError: null, BoundMethodGroupFlags.None, functionType: null, receiver, LookupResultKind.Viable) 10744LookupResultKind methodResultKind = methodResolution.ResultKind; 10745LookupResultKind extensionMethodResultKind = extensionMethodResolution.ResultKind; 11060if (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) 1368argsToParamsOpt: argsToParams, defaultArguments, resultKind: LookupResultKind.Viable, type: returnType, hasErrors: gotError); 2036LookupResultKind resultKind, 2316LookupResultKind resultKind, 2552LookupResultKind.OverloadResolutionFailure, 2571LookupResultKind.Viable,

75if (result.Kind != LookupResultKind.Viable && result.Kind != LookupResultKind.Empty) 211if (resultOfThisMember.Kind == LookupResultKind.Empty) 239if (resultOfThisMember.Kind != LookupResultKind.Empty) 300if (errorType.ResultKind == LookupResultKind.Inaccessible) 490if (res.Kind == LookupResultKind.Viable) 506if (res.Kind == LookupResultKind.Viable) 727if (result == null || result.Kind != LookupResultKind.Viable || (object)symbol == null) 1026result.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, 953return new BoundBinaryOperator(node, kind, ConstantValue.NotAvailable, methodOpt: null, constrainedToTypeOpt: null, LookupResultKind.Empty, left, right, GetBinaryOperatorErrorType(kind, diagnostics, node), true); 994return new BoundBinaryOperator(node, BinaryOperatorKind.StringConcatenation, BoundBinaryOperator.UncommonData.UnconvertedInterpolatedStringAddition(stringConstant), LookupResultKind.Empty, left, right, right.Type); 1012LookupResultKind resultKind; 1139ref OperatorResolutionForReporting operatorResolutionForReporting, out LookupResultKind resultKind, 1144resultKind = LookupResultKind.OverloadResolutionFailure; 1163ref LookupResultKind resultKind, 1228LookupResultKind extensionResultKind; 1292private void ReportUnaryOperatorError(CSharpSyntaxNode node, BindingDiagnosticBag diagnostics, string operatorName, BoundExpression operand, LookupResultKind resultKind, ref OperatorResolutionForReporting operatorResolutionForReporting) 1305ErrorCode errorCode = resultKind == LookupResultKind.Ambiguous ? 1313LookupResultKind resultKind, ref OperatorResolutionForReporting operatorResolutionForReporting) 1333LookupResultKind resultKind, ref OperatorResolutionForReporting operatorResolutionForReporting) 1371case LookupResultKind.Ambiguous: 1375case LookupResultKind.OverloadResolutionFailure when operatorToken.Kind() is SyntaxKind.PlusToken && isReadOnlySpanOfByte(left.Type) && isReadOnlySpanOfByte(right.Type): 1456resultKind: LookupResultKind.Viable, left, right, type: left.Type, hasErrors: constantValue != null && constantValue.IsBad); 1466resultKind: LookupResultKind.Empty, left, right, type: GetBinaryOperatorErrorType(kind, diagnostics, node), hasErrors: true); 1476LookupResultKind lookupResult; 1482lookupResult = LookupResultKind.OverloadResolutionFailure; 2069out LookupResultKind resultKind, 2087out LookupResultKind resultKind, 2092Debug.Assert(resultKind is LookupResultKind.Viable or LookupResultKind.Ambiguous or LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 2093Debug.Assert(possiblyBest.HasValue == (resultKind is LookupResultKind.Viable)); 2094Debug.Assert(resultKind is not (LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty) || originalUserDefinedOperators.IsEmpty); 2096if (!possiblyBest.HasValue && resultKind != LookupResultKind.Ambiguous) 2098Debug.Assert(resultKind is LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 2101LookupResultKind extensionResultKind; 2128out LookupResultKind resultKind, 2131resultKind = LookupResultKind.Empty; 2188out LookupResultKind resultKind, 2202Debug.Assert(resultKind is LookupResultKind.Viable or LookupResultKind.Ambiguous or LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 2203Debug.Assert(possiblyBest.HasValue == (resultKind is LookupResultKind.Viable)); 2204Debug.Assert(resultKind is not (LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty) || originalUserDefinedOperators.IsEmpty); 2209private static BinaryOperatorAnalysisResult BinaryOperatorAnalyzeOverloadResolutionResult(BinaryOperatorOverloadResolutionResult result, out LookupResultKind resultKind, out ImmutableArray<MethodSymbol> originalUserDefinedOperators) 2228resultKind = LookupResultKind.Viable; 2232resultKind = LookupResultKind.Ambiguous; 2236resultKind = LookupResultKind.OverloadResolutionFailure; 2242resultKind = possiblyBest.HasValue ? LookupResultKind.Viable : LookupResultKind.Empty; 2290out LookupResultKind resultKind, 2298Debug.Assert(resultKind is LookupResultKind.Viable or LookupResultKind.Ambiguous or LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 2299Debug.Assert(best.HasValue == (resultKind is LookupResultKind.Viable)); 2300Debug.Assert(resultKind is not (LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty) || originalUserDefinedOperators.IsEmpty); 2302if (!best.HasValue && resultKind != LookupResultKind.Ambiguous) 2304Debug.Assert(resultKind is LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 2307LookupResultKind extensionResultKind; 2332out LookupResultKind resultKind, 2347Debug.Assert(resultKind is LookupResultKind.Viable or LookupResultKind.Ambiguous or LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 2348Debug.Assert(possiblyBest.HasValue == (resultKind is LookupResultKind.Viable)); 2349Debug.Assert(resultKind is not (LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty) || originalUserDefinedOperators.IsEmpty); 2360out LookupResultKind resultKind, 2380resultKind = LookupResultKind.Viable; 2395resultKind = LookupResultKind.OverloadResolutionFailure; 2399resultKind = LookupResultKind.Ambiguous; 2404resultKind = LookupResultKind.OverloadResolutionFailure; 2410resultKind = possiblyBest.HasValue ? LookupResultKind.Viable : LookupResultKind.Empty; 2439out LookupResultKind resultKind, 2442resultKind = LookupResultKind.Empty; 3300LookupResultKind.Empty, 3321resultKind: LookupResultKind.Viable, 3347LookupResultKind resultKind; 3351Debug.Assert(resultKind is LookupResultKind.Viable or LookupResultKind.Ambiguous or LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 3352Debug.Assert(best.HasValue == (resultKind is LookupResultKind.Viable)); 3353Debug.Assert(resultKind is not (LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty) || originalUserDefinedOperators.IsEmpty); 3355if (!best.HasValue && resultKind != LookupResultKind.Ambiguous) 3357Debug.Assert(resultKind is LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 3361LookupResultKind staticExtensionResultKind; 3374Debug.Assert(instanceExtensionResult.ResultKind is LookupResultKind.Viable || !instanceExtensionResult.OriginalUserDefinedOperatorsOpt.IsDefaultOrEmpty); 3634LookupResultKind.Viable, 3659LookupResultKind.OverloadResolutionFailure, 3698out LookupResultKind staticResultKind, 3704staticResultKind = LookupResultKind.Empty; 4364resultKind: LookupResultKind.Empty, 4385resultKind: LookupResultKind.Viable, 4389LookupResultKind 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, 747yExpression = new BoundBadExpression(yExpression.Syntax, LookupResultKind.Empty, ImmutableArray<Symbol?>.Empty, ImmutableArray.Create(yExpression), CreateErrorType()); 753yExpression = new BoundBadExpression(yExpression.Syntax, LookupResultKind.Empty, ImmutableArray<Symbol?>.Empty, ImmutableArray.Create(yExpression), yExpression.Type); 814field2Value = new BoundBadExpression(field2Value.Syntax, LookupResultKind.Empty, ImmutableArray<Symbol?>.Empty, ImmutableArray.Create(field2Value), field2Value.Type, true); 970receiver = new BoundBadExpression(receiver.Syntax, LookupResultKind.NotAValue, ImmutableArray<Symbol?>.Empty, ImmutableArray.Create(receiver), CreateErrorType()); 992receiver = new BoundBadExpression(receiver.Syntax, LookupResultKind.NotAValue, ImmutableArray<Symbol?>.Empty, ImmutableArray.Create(receiver), CreateErrorType());

2305else if (conversion.ResultKind == LookupResultKind.OverloadResolutionFailure) 2701LookupResultKind.Viable, 2746var best = this.UnaryOperatorOverloadResolution(UnaryOperatorKind.True, expr, node, diagnostics, ref discardedOperatorResolutionForReporting, out LookupResultKind resultKind, out ImmutableArray<MethodSymbol> originalUserDefinedOperators); 3958LookupResultKind resultKind = LookupResultKind.Viable; 3988resultKind = LookupResultKind.Inaccessible; 4054resultKind: LookupResultKind.Viable, 4192if (call.ResultKind == LookupResultKind.Empty)

223case LookupResultKind.Empty: 229case LookupResultKind.Viable: 342return TypeWithAnnotations.Create(new ExtendedErrorTypeSymbol(GetContainingNamespaceOrNonExtensionType(symbol.Symbol), symbol.Symbol, LookupResultKind.NotATypeOrNamespace, diagnosticInfo)); 593return TypeWithAnnotations.Create(new ExtendedErrorTypeSymbol(left, LookupResultKind.NotATypeOrNamespace, diagnostics.Add(ErrorCode.ERR_ColColWithTypeAlias, node.Alias.Location, node.Alias.Identifier.Text))); 1508receiver = new BoundBadExpression(receiver.Syntax, LookupResultKind.Ambiguous, ImmutableArray<Symbol>.Empty, ImmutableArray.Create(receiver), receiver.Type, hasErrors: true).MakeCompilerGenerated(); 1518receiver = new BoundBadExpression(receiver.Syntax, LookupResultKind.Empty, ImmutableArray<Symbol>.Empty, childBoundNodes: [receiver], receiver.Type, hasErrors: true).MakeCompilerGenerated(); 2307LookupResultKind.Ambiguous, 2323singleResult = new ExtendedErrorTypeSymbol(GetContainingNamespaceOrNonExtensionType(singleResult), singleResult, LookupResultKind.NotReferencable, errorInfo); // UNDONE: Review resultkind. 2369if (result.Kind == LookupResultKind.Empty) 2407result.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)

742LookupResultKind.Empty, 955if (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;

373resolution.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);

446return new BoundBadExpression(node, LookupResultKind.Empty, ImmutableArray<Symbol>.Empty, ImmutableArray.Create(switchGoverningExpression), switchGoverningType ?? CreateErrorType());

196if (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);

118public virtual LookupResultKind ResultKind 122return LookupResultKind.Viable; 275public override LookupResultKind ResultKind 283return LookupResultKind.Viable; 345public override LookupResultKind ResultKind 349return !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, 415LookupResultKind resultKind, 436LookupResultKind resultKind, 449LookupResultKind resultKind, 535public BoundBadExpression(SyntaxNode syntax, LookupResultKind resultKind, ImmutableArray<Symbol?> symbols, ImmutableArray<BoundExpression> childBoundNodes, TypeSymbol type) 657LookupResultKind resultKind, 671LookupResultKind resultKind, 685LookupResultKind resultKind, 697LookupResultKind resultKind, 714LookupResultKind resultKind, 721public BoundIncrementOperator Update(UnaryOperatorKind operatorKind, BoundExpression operand, MethodSymbol? methodOpt, TypeSymbol? constrainedToTypeOpt, BoundValuePlaceholder? operandPlaceholder, BoundExpression? operandConversion, BoundValuePlaceholder? resultPlaceholder, BoundExpression? resultConversion, LookupResultKind resultKind, TypeSymbol type)

104LookupResultKind.Viable,

383LookupResultKind resultKind = LookupResultKind.Ambiguous; 391resultKind = LookupResultKind.OverloadResolutionFailure; 1917boundExpr, boundNodeForSyntacticParent, binderOpt, options, out bool isDynamic, out LookupResultKind resultKind, out ImmutableArray<Symbol> unusedMemberGroup); 1922LookupResultKind highestResultKind; 1928if (highestResultKind != LookupResultKind.Empty && highestResultKind < resultKind) 1935resultKind == LookupResultKind.OverloadResolutionFailure && 1938LookupResultKind highestResultKind; 1952if (resultKind == LookupResultKind.Empty) 1956return SymbolInfoFactory.Create(ImmutableArray<Symbol>.Empty, LookupResultKind.Empty, isDynamic); 1976if (resultKind == LookupResultKind.Viable && symbols.Count > 1) 1978resultKind = LookupResultKind.OverloadResolutionFailure; 2281LookupResultKind resultKind; 2327LookupResultKind resultKind = originalErrorSymbol.ResultKind; 2328if (resultKind != LookupResultKind.Empty) 3348out LookupResultKind resultKind, 3353resultKind = LookupResultKind.Viable; 3374if (resultKind == LookupResultKind.NotCreatable) 3380resultKind = LookupResultKind.Empty; 3402((BoundBadExpression)boundNodeForSyntacticParent).ResultKind == LookupResultKind.NotCreatable) 3404resultKind = LookupResultKind.NotCreatable; 3505resultKind = LookupResultKind.Empty; 3514case BoundKind.EventAccess when boundNodeForSyntacticParent is BoundEventAssignmentOperator { ResultKind: LookupResultKind.Viable } parentOperator && 3595Debug.Assert(resultKind != LookupResultKind.Viable); 3674resultKind = resultKind.WorseResultKind(LookupResultKind.OverloadResolutionFailure); 3732private static ParameterSymbol GetThisParameter(TypeSymbol typeOfThis, NamedTypeSymbol containingType, Symbol containingMember, out LookupResultKind resultKind) 3737resultKind = LookupResultKind.NotReferencable; 3750resultKind = LookupResultKind.NotReferencable; 3756resultKind = LookupResultKind.StaticInstanceMismatch; 3765resultKind = LookupResultKind.NotReferencable; 3772resultKind = LookupResultKind.Viable; 3780resultKind = LookupResultKind.NotReferencable; 3793resultKind = LookupResultKind.NotReferencable; 3800private static void GetSymbolsAndResultKind(BoundUnaryOperator unaryOperator, out bool isDynamic, ref LookupResultKind resultKind, ref OneOrMany<Symbol> symbols) 3805if (operandType == 0 || operandType == UnaryOperatorKind.UserDefined || unaryOperator.ResultKind != LookupResultKind.Viable) 3823private static void GetSymbolsAndResultKind(BoundIncrementOperator increment, out bool isDynamic, ref LookupResultKind resultKind, ref OneOrMany<Symbol> symbols) 3828if (operandType == 0 || operandType == UnaryOperatorKind.UserDefined || increment.ResultKind != LookupResultKind.Viable) 3847private static void GetSymbolsAndResultKind(BoundBinaryOperator binaryOperator, out bool isDynamic, ref LookupResultKind resultKind, ref OneOrMany<Symbol> symbols) 3853if (operandType == 0 || operandType == BinaryOperatorKind.UserDefined || binaryOperator.ResultKind != LookupResultKind.Viable || binaryOperator.OperatorKind.IsLogical()) 3920private static void GetSymbolsAndResultKind(BoundCompoundAssignmentOperator compoundAssignment, out bool isDynamic, ref LookupResultKind resultKind, ref OneOrMany<Symbol> symbols) 3926if (operandType == 0 || operandType == BinaryOperatorKind.UserDefined || compoundAssignment.ResultKind != LookupResultKind.Viable) 3946private static void GetSymbolsAndResultKind(BoundExpression node, Symbol symbolOpt, ImmutableArray<MethodSymbol> originalCandidates, out OneOrMany<Symbol> symbols, out LookupResultKind resultKind) 3961resultKind = LookupResultKind.Empty; 3972ref LookupResultKind resultKind, 3994Debug.Assert(resultKind != LookupResultKind.Viable || 4025ref LookupResultKind resultKind, 4055Debug.Assert(resultKind != LookupResultKind.Viable); 4072Debug.Assert(resultKind != LookupResultKind.Viable); 4073resultKind = resultKind.WorseResultKind(LookupResultKind.OverloadResolutionFailure); 4243out LookupResultKind resultKind, 4252if (resultKind == LookupResultKind.Empty) 4254resultKind = LookupResultKind.Viable; 4279resultKind = LookupResultKind.Viable; 4283resultKind = call.ResultKind.WorseResultKind(LookupResultKind.OverloadResolutionFailure); 4350resultKind = resultKind.WorseResultKind(LookupResultKind.MemberGroup); 4357resultKind = resultKind.WorseResultKind(LookupResultKind.OverloadResolutionFailure); 4372resultKind = resultKind.WorseResultKind(LookupResultKind.OverloadResolutionFailure); 4382if (!isDynamic && resultKind > LookupResultKind.OverloadResolutionFailure) 4384resultKind = LookupResultKind.OverloadResolutionFailure; 4396out LookupResultKind resultKind, 4404if (resultKind == LookupResultKind.Empty) 4406resultKind = LookupResultKind.Viable; 4428resultKind = LookupResultKind.Viable; 4432resultKind = indexer.ResultKind.WorseResultKind(LookupResultKind.OverloadResolutionFailure); 4467if (resultKind > LookupResultKind.OverloadResolutionFailure) 4469resultKind = LookupResultKind.OverloadResolutionFailure; 4572var resultKind = LookupResultKind.Empty; 4708ref LookupResultKind resultKind, 4718LookupResultKind singleKind = singleResult.Kind; 4727resultKind = LookupResultKind.Empty; 4739Debug.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, 504resultKind: LookupResultKind.Viable,

961public BoundBadExpression(SyntaxNode syntax, LookupResultKind resultKind, ImmutableArray<Symbol?> symbols, ImmutableArray<BoundExpression> childBoundNodes, TypeSymbol? type, bool hasErrors = false) 973public override LookupResultKind ResultKind { get; } 980public BoundBadExpression Update(LookupResultKind resultKind, ImmutableArray<Symbol?> symbols, ImmutableArray<BoundExpression> childBoundNodes, TypeSymbol? type) 1164public BoundUnaryOperator(SyntaxNode syntax, UnaryOperatorKind operatorKind, BoundExpression operand, ConstantValue? constantValueOpt, MethodSymbol? methodOpt, TypeSymbol? constrainedToTypeOpt, LookupResultKind resultKind, ImmutableArray<MethodSymbol> originalUserDefinedOperatorsOpt, TypeSymbol type, bool hasErrors = false) 1186public override LookupResultKind ResultKind { get; } 1192public BoundUnaryOperator Update(UnaryOperatorKind operatorKind, BoundExpression operand, ConstantValue? constantValueOpt, MethodSymbol? methodOpt, TypeSymbol? constrainedToTypeOpt, LookupResultKind resultKind, ImmutableArray<MethodSymbol> originalUserDefinedOperatorsOpt, TypeSymbol type) 1206public 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) 1234public override LookupResultKind ResultKind { get; } 1240public 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) 1427public BoundFunctionPointerInvocation(SyntaxNode syntax, BoundExpression invokedExpression, ImmutableArray<BoundExpression> arguments, ImmutableArray<RefKind> argumentRefKindsOpt, LookupResultKind resultKind, TypeSymbol type, bool hasErrors = false) 1445public override LookupResultKind ResultKind { get; } 1450public BoundFunctionPointerInvocation Update(BoundExpression invokedExpression, ImmutableArray<BoundExpression> arguments, ImmutableArray<RefKind> argumentRefKindsOpt, LookupResultKind resultKind, TypeSymbol type) 1642public BoundBinaryOperator(SyntaxNode syntax, BinaryOperatorKind operatorKind, BoundBinaryOperator.UncommonData? data, LookupResultKind resultKind, BoundExpression left, BoundExpression right, TypeSymbol type, bool hasErrors = false) 1661public override LookupResultKind ResultKind { get; } 1666public BoundBinaryOperator Update(BinaryOperatorKind operatorKind, BoundBinaryOperator.UncommonData? data, LookupResultKind resultKind, BoundExpression left, BoundExpression right, TypeSymbol type) 1718public 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) 1751public override LookupResultKind ResultKind { get; } 1757public 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) 1771public 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) 1798public override LookupResultKind ResultKind { get; } 1804public BoundCompoundAssignmentOperator Update(BinaryOperatorSignature @operator, BoundExpression left, BoundExpression right, BoundValuePlaceholder? leftPlaceholder, BoundExpression? leftConversion, BoundValuePlaceholder? finalPlaceholder, BoundExpression? finalConversion, LookupResultKind resultKind, ImmutableArray<MethodSymbol> originalUserDefinedOperatorsOpt, TypeSymbol type) 5729protected BoundMethodOrPropertyGroup(BoundKind kind, SyntaxNode syntax, BoundExpression? receiverOpt, LookupResultKind resultKind, bool hasErrors = false) 5738public override LookupResultKind ResultKind { get; } 6080public 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) 6107public BoundMethodGroup Update(ImmutableArray<TypeWithAnnotations> typeArgumentsOpt, string name, ImmutableArray<MethodSymbol> methods, Symbol? lookupSymbolOpt, DiagnosticInfo? lookupError, BoundMethodGroupFlags? flags, FunctionTypeSymbol? functionType, BoundExpression? receiverOpt, LookupResultKind resultKind) 6121public BoundPropertyGroup(SyntaxNode syntax, ImmutableArray<PropertySymbol> properties, BoundExpression? receiverOpt, LookupResultKind resultKind, bool hasErrors = false) 6135public BoundPropertyGroup Update(ImmutableArray<PropertySymbol> properties, BoundExpression? receiverOpt, LookupResultKind resultKind) 6149public 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) 6188public override LookupResultKind ResultKind { get; } 6194public 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) 6247public 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) 6273public override LookupResultKind ResultKind { get; } 6278public BoundAttribute Update(MethodSymbol? constructor, ImmutableArray<BoundExpression> constructorArguments, ImmutableArray<string?> constructorArgumentNamesOpt, ImmutableArray<int> constructorArgumentsToParamsOpt, bool constructorExpanded, BitVector constructorDefaultArguments, ImmutableArray<BoundAssignmentOperator> namedArguments, LookupResultKind resultKind, TypeSymbol type) 6753public 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) 6781public override LookupResultKind ResultKind { get; } 6788public 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) 6875public 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) 6901public override LookupResultKind ResultKind { get; } 6906public BoundCollectionElementInitializer Update(MethodSymbol addMethod, ImmutableArray<BoundExpression> arguments, BoundExpression? implicitReceiverOpt, bool expanded, ImmutableArray<int> argsToParamsOpt, BitVector defaultArguments, bool invokedAsExtensionMethod, LookupResultKind resultKind, TypeSymbol type) 7267public BoundFieldAccess(SyntaxNode syntax, BoundExpression? receiverOpt, FieldSymbol fieldSymbol, ConstantValue? constantValueOpt, LookupResultKind resultKind, bool isByValue, bool isDeclaration, TypeSymbol type, bool hasErrors = false) 7286public override LookupResultKind ResultKind { get; } 7293public BoundFieldAccess Update(BoundExpression? receiverOpt, FieldSymbol fieldSymbol, ConstantValue? constantValueOpt, LookupResultKind resultKind, bool isByValue, bool isDeclaration, TypeSymbol type) 7347public BoundPropertyAccess(SyntaxNode syntax, BoundExpression? receiverOpt, ThreeState initialBindingReceiverIsSubjectToCloning, PropertySymbol propertySymbol, AccessorKind autoPropertyAccessorKind, LookupResultKind resultKind, TypeSymbol type, bool hasErrors = false) 7366public override LookupResultKind ResultKind { get; } 7371public BoundPropertyAccess Update(BoundExpression? receiverOpt, ThreeState initialBindingReceiverIsSubjectToCloning, PropertySymbol propertySymbol, AccessorKind autoPropertyAccessorKind, LookupResultKind resultKind, TypeSymbol type) 7385public BoundEventAccess(SyntaxNode syntax, BoundExpression? receiverOpt, EventSymbol eventSymbol, bool isUsableAsField, LookupResultKind resultKind, TypeSymbol type, bool hasErrors = false) 7402public override LookupResultKind ResultKind { get; } 7407public BoundEventAccess Update(BoundExpression? receiverOpt, EventSymbol eventSymbol, bool isUsableAsField, LookupResultKind resultKind, TypeSymbol type)

1734return new BoundBadExpression(F.Syntax, LookupResultKind.Empty, ImmutableArray<Symbol>.Empty, ImmutableArray.Create<BoundExpression>(node), node.Type);

352return new BoundBadExpression(node.Syntax, default(LookupResultKind), ImmutableArray<Symbol>.Empty, ImmutableArray.Create<BoundExpression>(node), ExpressionType); 1092return new BoundBadExpression(node.Syntax, default(LookupResultKind), ImmutableArray<Symbol>.Empty, ImmutableArray.Create<BoundExpression>(node), node.Type); 1099return new BoundBadExpression(node.Syntax, default(LookupResultKind), ImmutableArray<Symbol>.Empty, ImmutableArray.Create<BoundExpression>(node), node.Type); 1131return new BoundBadExpression(node.Syntax, default(LookupResultKind), ImmutableArray<Symbol>.Empty, ImmutableArray.Create<BoundExpression>(node), node.Type);

318var result = new BoundFieldAccess(node.Syntax, new BoundThisReference(node.Syntax, primaryCtor.ContainingType), field, ConstantValue.NotAvailable, LookupResultKind.Viable, node.Type); 593return 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,

565resultKind: 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); 333return new BoundBadExpression(node.Syntax, LookupResultKind.NotCreatable, ImmutableArray.Create<Symbol?>(node.Event),

22LookupResultKind resultKind,

485helperCall = new BoundBadExpression(fixedInitializer.Syntax, LookupResultKind.NotInvocable, ImmutableArray<Symbol?>.Empty, ImmutableArray<BoundExpression>.Empty, ErrorTypeSymbol.UnknownResultType); 546lengthCall = 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);

358resultKind: LookupResultKind.Viable, 389newGuid = new BoundBadExpression(node.Syntax, LookupResultKind.NotCreatable, ImmutableArray<Symbol?>.Empty, ImmutableArray<BoundExpression>.Empty, ErrorTypeSymbol.UnknownResultType); 407callGetTypeFromCLSID = new BoundBadExpression(node.Syntax, LookupResultKind.OverloadResolutionFailure, ImmutableArray<Symbol?>.Empty, ImmutableArray<BoundExpression>.Empty, ErrorTypeSymbol.UnknownResultType); 419rewrittenObjectCreation = 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 }; 644return new BoundBinaryOperator(this.Syntax, kind, ConstantValue.NotAvailable, methodOpt: null, constrainedToTypeOpt: null, LookupResultKind.Viable, left, right, type) { WasCompilerGenerated = true }; 802return new BoundBadExpression(Syntax, default(LookupResultKind), ImmutableArray<Symbol?>.Empty, args.AsImmutable(), receiver); 867invokedAsExtensionMethod: false, argsToParamsOpt: default(ImmutableArray<int>), defaultArguments: default(BitVector), resultKind: LookupResultKind.Viable, 908argsToParamsOpt: ImmutableArray<int>.Empty, defaultArguments: default(BitVector), resultKind: LookupResultKind.Viable, type: method.ReturnType) 1641return new BoundUnaryOperator(expression.Syntax, UnaryOperatorKind.BoolLogicalNegation, expression, null, null, constrainedToTypeOpt: null, LookupResultKind.Viable, expression.Type); 1888new BoundUnaryOperator(syntax, UnaryOperatorKind.BoolLogicalNegation, call, ConstantValue.NotAvailable, methodOpt: null, constrainedToTypeOpt: null, LookupResultKind.Viable, returnType);

478if (boundFunctionPointerInvocation.ResultKind != LookupResultKind.Viable) 631if (!boundIndexerAccess.OriginalIndexersOpt.IsDefault || boundIndexerAccess.ResultKind == LookupResultKind.OverloadResolutionFailure) 711if (boundObjectCreationExpression.ResultKind == LookupResultKind.OverloadResolutionFailure || constructor.OriginalDefinition is ErrorMethodSymbol) 887if (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

2129return 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); 686result.Add(new ExtendedErrorTypeSymbol(t, LookupResultKind.NotReferencable, 774return new ExtendedErrorTypeSymbol(declaredBase, LookupResultKind.NotReferencable,

308resultKind: LookupResultKind.Viable, 371resultKind: 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);