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,

394resultKind: LookupResultKind.Viable, 535resultKind: 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); 597return BadExpression(node, LookupResultKind.NotAValue); 604return BadExpression(node, LookupResultKind.NotAValue); 875node, LookupResultKind.Empty, ImmutableArray<Symbol>.Empty, ImmutableArray.Create<BoundExpression>(BindToTypeForErrorRecovery(BindValue(node.Expression, BindingDiagnosticBag.Discarded, BindValueKind.RefersToLocation))), 1062argumentSyntax, LookupResultKind.Empty, ImmutableArray<Symbol>.Empty, 1511bool result = lookupResult.Kind != LookupResultKind.Empty; 1569if (type is ErrorTypeSymbol { ResultKind: LookupResultKind.Empty }) 1678if (lookupResult.Kind != LookupResultKind.Empty) 1722resultKind: LookupResultKind.WrongArity, 1850if (lookupResult.Kind != LookupResultKind.Empty) 2030private BoundExpression BindNonMethod(SimpleNameSyntax node, Symbol symbol, BindingDiagnosticBag diagnostics, LookupResultKind resultKind, bool indexed, bool isError) 2467return BadExpression(node, LookupResultKind.NotLabel); 2826if (conversion.ResultKind == LookupResultKind.OverloadResolutionFailure) 3310LookupResultKind.Viable, 4271LookupResultKind.Empty, 4540LookupResultKind.NotCreatable, //in this context, anyway 4579LookupResultKind.Empty, 4911resultKind: LookupResultKind.Empty, 4922resultKind: LookupResultKind.Empty, 4965resultKind: LookupResultKind.Empty, 5122resultKind: LookupResultKind.Viable, 5134resultKind: LookupResultKind.OverloadResolutionFailure, 5259type = new ExtendedErrorTypeSymbol(type, LookupResultKind.NotCreatable, 5269type = new ExtendedErrorTypeSymbol(type, LookupResultKind.NotCreatable, 5287return new BoundBadExpression(syntax, LookupResultKind.Empty, ImmutableArray<Symbol?>.Empty, ImmutableArray<BoundExpression>.Empty, CreateErrorType()); 5502return new BoundBadExpression(node, LookupResultKind.NotInvocable, StaticCast<Symbol>.From(type.InstanceConstructors), ImmutableArray.Create(argument), type); 5513sourceDelegate.DelegateInvokeMethod, null, BoundMethodGroupFlags.None, functionType: null, argument, LookupResultKind.Viable); 5549return new BoundBadExpression(node, LookupResultKind.OverloadResolutionFailure, StaticCast<Symbol>.From(type.InstanceConstructors), childNodes, type); 5646return new BoundBadExpression(node, LookupResultKind.NotCreatable, ImmutableArray.Create<Symbol?>(type), children.ToImmutableAndFree(), type) { WasCompilerGenerated = wasCompilerGenerated }; 5814LookupResultKind.Empty, 5834return BindToTypeForErrorRecovery(ToBadExpression(boundExpression, LookupResultKind.NotAValue)); 5872LookupResultKind resultKind; 5975resultKind = LookupResultKind.NotAValue; 6061resultKind = isRhsNestedInitializer ? LookupResultKind.NotAValue : LookupResultKind.NotAVariable; 6086ref LookupResultKind resultKind) 6098resultKind = LookupResultKind.NotAValue; 6128case LookupResultKind.Empty: 6132case LookupResultKind.Inaccessible: 6143return ToBadExpression(boundMember, (valueKind == BindValueKind.RValue) ? LookupResultKind.NotAValue : LookupResultKind.NotAVariable); 6441return BadExpression(elementInitializer, LookupResultKind.NotInvocable); 6482return BadExpression(elementInitializer, LookupResultKind.NotInvocable, ImmutableArray<Symbol>.Empty, boundElementInitializerExpressions); 6916LookupResultKind resultKind; 6921resultKind = LookupResultKind.NotCreatable; 6925resultKind = LookupResultKind.Inaccessible; 6929resultKind = LookupResultKind.OverloadResolutionFailure; 7114return new BoundBadExpression(node, LookupResultKind.OverloadResolutionFailure, ImmutableArray<Symbol>.Empty, children, interfaceType); 7871return new BoundBadExpression(node, LookupResultKind.Ambiguous, lookupResult.Symbols.AsImmutable(), ImmutableArray.Create(boundLeft), CreateErrorType(rightName), hasErrors: true); 7892else if (lookupResult.Kind == LookupResultKind.WrongArity) 7902else if (lookupResult.Kind == LookupResultKind.Empty) 7945return BadExpression(node, LookupResultKind.NotAValue, boundLeft); 8089return BindPropertyAccess(syntax, receiver, propertySymbol, diagnostics, LookupResultKind.Viable, hasErrors: false); 8093return new BoundBadExpression(syntax, LookupResultKind.Viable, errorTypeSymbol.CandidateSymbols!, [receiver], CreateErrorType()); 8320LookupResultKind lookupKind) 8736result = new MethodGroupResolution(bestProperty, LookupResultKind.Viable, diagnostics.ToReadOnly()); 8907ExtendedErrorTypeSymbol resultSymbol = new ExtendedErrorTypeSymbol(containingSymbol: null, symbols, LookupResultKind.OverloadResolutionFailure, errorInfo, arity); 8908Debug.Assert(lookupResult.Kind == LookupResultKind.Viable); 8926LookupResultKind resultKind, 9086LookupResultKind lookupResult, 9166LookupResultKind lookupResult, 9211ref LookupResultKind resultKind, 9231resultKind = LookupResultKind.StaticInstanceMismatch; 9240resultKind = LookupResultKind.StaticInstanceMismatch; 9265Debug.Assert(result.Kind != LookupResultKind.Empty); 9678return new BoundBadExpression(node, LookupResultKind.Empty, ImmutableArray<Symbol>.Empty, childBoundNodes, CreateErrorType(), hasErrors: true); 10530method, lookupError: null, BoundMethodGroupFlags.None, functionType: null, receiver, LookupResultKind.Viable) 10757LookupResultKind methodResultKind = methodResolution.ResultKind; 10758LookupResultKind extensionMethodResultKind = extensionMethodResolution.ResultKind; 11073if (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; 2047out LookupResultKind resultKind, 2065out LookupResultKind resultKind, 2070Debug.Assert(resultKind is LookupResultKind.Viable or LookupResultKind.Ambiguous or LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 2071Debug.Assert(possiblyBest.HasValue == (resultKind is LookupResultKind.Viable)); 2072Debug.Assert(resultKind is not (LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty) || originalUserDefinedOperators.IsEmpty); 2074if (!possiblyBest.HasValue && resultKind != LookupResultKind.Ambiguous) 2076Debug.Assert(resultKind is LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 2079LookupResultKind extensionResultKind; 2106out LookupResultKind resultKind, 2109resultKind = LookupResultKind.Empty; 2166out LookupResultKind resultKind, 2180Debug.Assert(resultKind is LookupResultKind.Viable or LookupResultKind.Ambiguous or LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 2181Debug.Assert(possiblyBest.HasValue == (resultKind is LookupResultKind.Viable)); 2182Debug.Assert(resultKind is not (LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty) || originalUserDefinedOperators.IsEmpty); 2187private static BinaryOperatorAnalysisResult BinaryOperatorAnalyzeOverloadResolutionResult(BinaryOperatorOverloadResolutionResult result, out LookupResultKind resultKind, out ImmutableArray<MethodSymbol> originalUserDefinedOperators) 2206resultKind = LookupResultKind.Viable; 2210resultKind = LookupResultKind.Ambiguous; 2214resultKind = LookupResultKind.OverloadResolutionFailure; 2220resultKind = possiblyBest.HasValue ? LookupResultKind.Viable : LookupResultKind.Empty; 2268out LookupResultKind resultKind, 2276Debug.Assert(resultKind is LookupResultKind.Viable or LookupResultKind.Ambiguous or LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 2277Debug.Assert(best.HasValue == (resultKind is LookupResultKind.Viable)); 2278Debug.Assert(resultKind is not (LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty) || originalUserDefinedOperators.IsEmpty); 2280if (!best.HasValue && resultKind != LookupResultKind.Ambiguous) 2282Debug.Assert(resultKind is LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 2285LookupResultKind extensionResultKind; 2310out LookupResultKind resultKind, 2325Debug.Assert(resultKind is LookupResultKind.Viable or LookupResultKind.Ambiguous or LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 2326Debug.Assert(possiblyBest.HasValue == (resultKind is LookupResultKind.Viable)); 2327Debug.Assert(resultKind is not (LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty) || originalUserDefinedOperators.IsEmpty); 2338out LookupResultKind resultKind, 2358resultKind = LookupResultKind.Viable; 2373resultKind = LookupResultKind.OverloadResolutionFailure; 2377resultKind = LookupResultKind.Ambiguous; 2382resultKind = LookupResultKind.OverloadResolutionFailure; 2388resultKind = possiblyBest.HasValue ? LookupResultKind.Viable : LookupResultKind.Empty; 2417out LookupResultKind resultKind, 2420resultKind = LookupResultKind.Empty; 3278LookupResultKind.Empty, 3299resultKind: LookupResultKind.Viable, 3325LookupResultKind resultKind; 3329Debug.Assert(resultKind is LookupResultKind.Viable or LookupResultKind.Ambiguous or LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 3330Debug.Assert(best.HasValue == (resultKind is LookupResultKind.Viable)); 3331Debug.Assert(resultKind is not (LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty) || originalUserDefinedOperators.IsEmpty); 3333if (!best.HasValue && resultKind != LookupResultKind.Ambiguous) 3335Debug.Assert(resultKind is LookupResultKind.OverloadResolutionFailure or LookupResultKind.Empty); 3339LookupResultKind staticExtensionResultKind; 3352Debug.Assert(instanceExtensionResult.ResultKind is LookupResultKind.Viable || !instanceExtensionResult.OriginalUserDefinedOperatorsOpt.IsDefaultOrEmpty); 3612LookupResultKind.Viable, 3637LookupResultKind.OverloadResolutionFailure, 3676out LookupResultKind staticResultKind, 3682staticResultKind = LookupResultKind.Empty; 4342resultKind: LookupResultKind.Empty, 4363resultKind: LookupResultKind.Viable, 4367LookupResultKind 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());

2311else if (conversion.ResultKind == LookupResultKind.OverloadResolutionFailure) 2707LookupResultKind.Viable, 2752var best = this.UnaryOperatorOverloadResolution(UnaryOperatorKind.True, expr, node, diagnostics, ref discardedOperatorResolutionForReporting, out LookupResultKind resultKind, out ImmutableArray<MethodSymbol> originalUserDefinedOperators); 3964LookupResultKind resultKind = LookupResultKind.Viable; 3994resultKind = LookupResultKind.Inaccessible; 4060resultKind: LookupResultKind.Viable, 4198if (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,

959public BoundBadExpression(SyntaxNode syntax, LookupResultKind resultKind, ImmutableArray<Symbol?> symbols, ImmutableArray<BoundExpression> childBoundNodes, TypeSymbol? type, bool hasErrors = false) 971public override LookupResultKind ResultKind { get; } 978public BoundBadExpression Update(LookupResultKind resultKind, ImmutableArray<Symbol?> symbols, ImmutableArray<BoundExpression> childBoundNodes, TypeSymbol? type) 1162public BoundUnaryOperator(SyntaxNode syntax, UnaryOperatorKind operatorKind, BoundExpression operand, ConstantValue? constantValueOpt, MethodSymbol? methodOpt, TypeSymbol? constrainedToTypeOpt, LookupResultKind resultKind, ImmutableArray<MethodSymbol> originalUserDefinedOperatorsOpt, TypeSymbol type, bool hasErrors = false) 1184public override LookupResultKind ResultKind { get; } 1190public BoundUnaryOperator Update(UnaryOperatorKind operatorKind, BoundExpression operand, ConstantValue? constantValueOpt, MethodSymbol? methodOpt, TypeSymbol? constrainedToTypeOpt, LookupResultKind resultKind, ImmutableArray<MethodSymbol> originalUserDefinedOperatorsOpt, TypeSymbol type) 1204public 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) 1232public override LookupResultKind ResultKind { get; } 1238public 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) 1425public BoundFunctionPointerInvocation(SyntaxNode syntax, BoundExpression invokedExpression, ImmutableArray<BoundExpression> arguments, ImmutableArray<RefKind> argumentRefKindsOpt, LookupResultKind resultKind, TypeSymbol type, bool hasErrors = false) 1443public override LookupResultKind ResultKind { get; } 1448public BoundFunctionPointerInvocation Update(BoundExpression invokedExpression, ImmutableArray<BoundExpression> arguments, ImmutableArray<RefKind> argumentRefKindsOpt, LookupResultKind resultKind, TypeSymbol type) 1640public BoundBinaryOperator(SyntaxNode syntax, BinaryOperatorKind operatorKind, BoundBinaryOperator.UncommonData? data, LookupResultKind resultKind, BoundExpression left, BoundExpression right, TypeSymbol type, bool hasErrors = false) 1659public override LookupResultKind ResultKind { get; } 1664public BoundBinaryOperator Update(BinaryOperatorKind operatorKind, BoundBinaryOperator.UncommonData? data, LookupResultKind resultKind, BoundExpression left, BoundExpression right, TypeSymbol type) 1716public 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) 1749public override LookupResultKind ResultKind { get; } 1755public 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) 1769public 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) 1796public override LookupResultKind ResultKind { get; } 1802public BoundCompoundAssignmentOperator Update(BinaryOperatorSignature @operator, BoundExpression left, BoundExpression right, BoundValuePlaceholder? leftPlaceholder, BoundExpression? leftConversion, BoundValuePlaceholder? finalPlaceholder, BoundExpression? finalConversion, LookupResultKind resultKind, ImmutableArray<MethodSymbol> originalUserDefinedOperatorsOpt, TypeSymbol type) 5727protected BoundMethodOrPropertyGroup(BoundKind kind, SyntaxNode syntax, BoundExpression? receiverOpt, LookupResultKind resultKind, bool hasErrors = false) 5736public override LookupResultKind ResultKind { get; } 6078public 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) 6105public BoundMethodGroup Update(ImmutableArray<TypeWithAnnotations> typeArgumentsOpt, string name, ImmutableArray<MethodSymbol> methods, Symbol? lookupSymbolOpt, DiagnosticInfo? lookupError, BoundMethodGroupFlags? flags, FunctionTypeSymbol? functionType, BoundExpression? receiverOpt, LookupResultKind resultKind) 6119public BoundPropertyGroup(SyntaxNode syntax, ImmutableArray<PropertySymbol> properties, BoundExpression? receiverOpt, LookupResultKind resultKind, bool hasErrors = false) 6133public BoundPropertyGroup Update(ImmutableArray<PropertySymbol> properties, BoundExpression? receiverOpt, LookupResultKind resultKind) 6147public 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) 6186public override LookupResultKind ResultKind { get; } 6192public 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) 6245public 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) 6271public override LookupResultKind ResultKind { get; } 6276public BoundAttribute Update(MethodSymbol? constructor, ImmutableArray<BoundExpression> constructorArguments, ImmutableArray<string?> constructorArgumentNamesOpt, ImmutableArray<int> constructorArgumentsToParamsOpt, bool constructorExpanded, BitVector constructorDefaultArguments, ImmutableArray<BoundAssignmentOperator> namedArguments, LookupResultKind resultKind, TypeSymbol type) 6751public 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) 6779public override LookupResultKind ResultKind { get; } 6786public 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) 6873public 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) 6899public override LookupResultKind ResultKind { get; } 6904public BoundCollectionElementInitializer Update(MethodSymbol addMethod, ImmutableArray<BoundExpression> arguments, BoundExpression? implicitReceiverOpt, bool expanded, ImmutableArray<int> argsToParamsOpt, BitVector defaultArguments, bool invokedAsExtensionMethod, LookupResultKind resultKind, TypeSymbol type) 7265public BoundFieldAccess(SyntaxNode syntax, BoundExpression? receiverOpt, FieldSymbol fieldSymbol, ConstantValue? constantValueOpt, LookupResultKind resultKind, bool isByValue, bool isDeclaration, TypeSymbol type, bool hasErrors = false) 7284public override LookupResultKind ResultKind { get; } 7291public BoundFieldAccess Update(BoundExpression? receiverOpt, FieldSymbol fieldSymbol, ConstantValue? constantValueOpt, LookupResultKind resultKind, bool isByValue, bool isDeclaration, TypeSymbol type) 7345public BoundPropertyAccess(SyntaxNode syntax, BoundExpression? receiverOpt, ThreeState initialBindingReceiverIsSubjectToCloning, PropertySymbol propertySymbol, AccessorKind autoPropertyAccessorKind, LookupResultKind resultKind, TypeSymbol type, bool hasErrors = false) 7364public override LookupResultKind ResultKind { get; } 7369public BoundPropertyAccess Update(BoundExpression? receiverOpt, ThreeState initialBindingReceiverIsSubjectToCloning, PropertySymbol propertySymbol, AccessorKind autoPropertyAccessorKind, LookupResultKind resultKind, TypeSymbol type) 7383public BoundEventAccess(SyntaxNode syntax, BoundExpression? receiverOpt, EventSymbol eventSymbol, bool isUsableAsField, LookupResultKind resultKind, TypeSymbol type, bool hasErrors = false) 7400public override LookupResultKind ResultKind { get; } 7405public 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); 692result.Add(new ExtendedErrorTypeSymbol(t, LookupResultKind.NotReferencable, 780return new ExtendedErrorTypeSymbol(declaredBase, LookupResultKind.NotReferencable,

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

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

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

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

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