222CSharpParseOptions options = CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.Preview);

222CSharpParseOptions options = CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.Preview);

38internal static readonly CSharpParseOptions ParseOptions = new CSharpParseOptions(LanguageVersion.Preview).WithFeatures(new[] { new KeyValuePair<string, string>("InterceptorsNamespaces", "Microsoft.AspNetCore.Http.Generated") });

38internal static readonly CSharpParseOptions ParseOptions = new CSharpParseOptions(LanguageVersion.Preview).WithFeatures(new[] { new KeyValuePair<string, string>("InterceptorsNamespaces", "Microsoft.AspNetCore.Http.Generated") });

221parseOptions = parseOptions.WithLanguageVersion(LanguageVersion.CSharp8); 223else if (LanguageVersionFacts.TryParse(dependencyContextOptions.LanguageVersion, out var languageVersion))

125Assert.Equal(LanguageVersion.CSharp8, parseOptions.LanguageVersion); 154Assert.Equal(LanguageVersion.CSharp7_1, compilationOptions.LanguageVersion);

28private static readonly CSharpParseOptions ParseOptions = new CSharpParseOptions(LanguageVersion.Preview)

440Assert.Equal(CSharp.LanguageVersion.CSharp13, CSharp.LanguageVersionFacts.CurrentVersion);

34LanguageVersion = LanguageVersion.CSharp11, 57LanguageVersion = LanguageVersion.CSharp11, 77LanguageVersion = LanguageVersion.CSharp11, 97LanguageVersion = LanguageVersion.CSharp11,

27LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp9, 64LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp9, 105LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp9, 134LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp9,

58/// <see cref="LanguageVersion.CSharp8"/>. 60public LanguageVersion LanguageVersion { get; set; } = LanguageVersion.CSharp8;

58/// <see cref="LanguageVersion.CSharp8"/>. 60public LanguageVersion LanguageVersion { get; set; } = LanguageVersion.CSharp8;

1515var requiredVersion = MessageID.IDS_FeatureFieldKeyword.RequiredVersion(); 4590LanguageVersion requiredVersion = MessageID.IDS_FeatureNestedStackalloc.RequiredVersion(); 10994if (Compilation.LanguageVersion < LanguageVersion.CSharp13)

631var requiredVersion = MessageID.IDS_FeatureRecursivePatterns.RequiredVersion(); 774LanguageVersion requiredVersion = MessageID.IDS_FeatureGenericPatternMatching.RequiredVersion();

619internal static CSDiagnosticInfo? GetNullableUnconstrainedTypeParameterDiagnosticIfNecessary(LanguageVersion languageVersion, in TypeWithAnnotations type) 625var requiredVersion = MessageID.IDS_FeatureDefaultTypeParameterConstraint.RequiredVersion();

1315(binder.Compilation.LanguageVersion > LanguageVersion.CSharp12 || member.ContainingModule == binder.Compilation.SourceModule))) 3036if (Compilation.LanguageVersion < LanguageVersion.CSharp13)

90LanguageVersion languageVersion = LanguageVersion.Default;

285var defaultVersion = LanguageVersion.Default.MapSpecifiedToEffectiveVersion(); 286var latestVersion = LanguageVersion.Latest.MapSpecifiedToEffectiveVersion(); 287foreach (var v in (LanguageVersion[])Enum.GetValues(typeof(LanguageVersion)))

227internal bool IsPeVerifyCompatEnabled => LanguageVersion < LanguageVersion.CSharp7_2 || Feature("peverify-compat") != null; 318public LanguageVersion LanguageVersion 534private static LanguageVersion CommonLanguageVersion(ImmutableArray<SyntaxTree> syntaxTrees) 536LanguageVersion? result = null; 539var version = ((CSharpParseOptions)tree.Options).LanguageVersion; 550return result ?? LanguageVersion.Default.MapSpecifiedToEffectiveVersion();

31public LanguageVersion LanguageVersion { get; private set; } 38public LanguageVersion SpecifiedLanguageVersion { get; private set; } 51LanguageVersion languageVersion = LanguageVersion.Default, 64LanguageVersion languageVersion, 99public CSharpParseOptions WithLanguageVersion(LanguageVersion version) 106var effectiveLanguageVersion = version.MapSpecifiedToEffectiveVersion(); 280LanguageVersion availableVersion = LanguageVersion; 281LanguageVersion requiredVersion = feature.RequiredVersion();

11private readonly LanguageVersion _languageVersion; 14internal LazyUseSiteDiagnosticsInfoForNullableType(LanguageVersion languageVersion, TypeWithAnnotations possiblyNullableTypeSymbol)

463private static CSDiagnosticInfo GetDisabledFeatureDiagnosticInfo(MessageID feature, LanguageVersion availableVersion) 471LanguageVersion requiredVersion = feature.RequiredVersion(); 472return requiredVersion == LanguageVersion.Preview.MapSpecifiedToEffectiveVersion() 477internal static LanguageVersion RequiredVersion(this MessageID feature) 497return LanguageVersion.Preview; 509return LanguageVersion.CSharp13; 520return LanguageVersion.CSharp12; 538return LanguageVersion.CSharp11; 559return LanguageVersion.CSharp10; 587return LanguageVersion.CSharp9; 612return LanguageVersion.CSharp8; 628return LanguageVersion.CSharp7_3; 639return LanguageVersion.CSharp7_2; 646return LanguageVersion.CSharp7_1; 660return LanguageVersion.CSharp7; 675return LanguageVersion.CSharp6; 679return LanguageVersion.CSharp5; 686return LanguageVersion.CSharp4; 699return LanguageVersion.CSharp3; 715return LanguageVersion.CSharp2; 719return LanguageVersion.CSharp1;

2468var requiredVersion = MessageID.IDS_FeatureDefaultTypeParameterConstraint.RequiredVersion();

274internal static bool IsValid(this LanguageVersion value) 278case LanguageVersion.CSharp1: 279case LanguageVersion.CSharp2: 280case LanguageVersion.CSharp3: 281case LanguageVersion.CSharp4: 282case LanguageVersion.CSharp5: 283case LanguageVersion.CSharp6: 284case LanguageVersion.CSharp7: 285case LanguageVersion.CSharp7_1: 286case LanguageVersion.CSharp7_2: 287case LanguageVersion.CSharp7_3: 288case LanguageVersion.CSharp8: 289case LanguageVersion.CSharp9: 290case LanguageVersion.CSharp10: 291case LanguageVersion.CSharp11: 292case LanguageVersion.CSharp12: 293case LanguageVersion.CSharp13: 294case LanguageVersion.Preview: 301internal static ErrorCode GetErrorCode(this LanguageVersion version) 305case LanguageVersion.CSharp1: 307case LanguageVersion.CSharp2: 309case LanguageVersion.CSharp3: 311case LanguageVersion.CSharp4: 313case LanguageVersion.CSharp5: 315case LanguageVersion.CSharp6: 317case LanguageVersion.CSharp7: 319case LanguageVersion.CSharp7_1: 321case LanguageVersion.CSharp7_2: 323case LanguageVersion.CSharp7_3: 325case LanguageVersion.CSharp8: 327case LanguageVersion.CSharp9: 329case LanguageVersion.CSharp10: 331case LanguageVersion.CSharp11: 333case LanguageVersion.CSharp12: 335case LanguageVersion.CSharp13: 345internal LanguageVersion Version { get; } 347internal CSharpRequiredLanguageVersion(LanguageVersion version) 368internal const LanguageVersion CSharpNext = LanguageVersion.Preview; 374public static string ToDisplayString(this LanguageVersion version) 378case LanguageVersion.CSharp1: 380case LanguageVersion.CSharp2: 382case LanguageVersion.CSharp3: 384case LanguageVersion.CSharp4: 386case LanguageVersion.CSharp5: 388case LanguageVersion.CSharp6: 390case LanguageVersion.CSharp7: 392case LanguageVersion.CSharp7_1: 394case LanguageVersion.CSharp7_2: 396case LanguageVersion.CSharp7_3: 398case LanguageVersion.CSharp8: 400case LanguageVersion.CSharp9: 402case LanguageVersion.CSharp10: 404case LanguageVersion.CSharp11: 406case LanguageVersion.CSharp12: 408case LanguageVersion.CSharp13: 410case LanguageVersion.Default: 412case LanguageVersion.Latest: 414case LanguageVersion.LatestMajor: 416case LanguageVersion.Preview: 424/// Try parse a <see cref="LanguageVersion"/> from a string input, returning default if input was null. 426public static bool TryParse(string? version, out LanguageVersion result) 430result = LanguageVersion.Default; 437result = LanguageVersion.Default; 441result = LanguageVersion.Latest; 445result = LanguageVersion.LatestMajor; 449result = LanguageVersion.Preview; 455result = LanguageVersion.CSharp1; 461result = LanguageVersion.CSharp2; 466result = LanguageVersion.CSharp3; 471result = LanguageVersion.CSharp4; 476result = LanguageVersion.CSharp5; 481result = LanguageVersion.CSharp6; 486result = LanguageVersion.CSharp7; 490result = LanguageVersion.CSharp7_1; 494result = LanguageVersion.CSharp7_2; 498result = LanguageVersion.CSharp7_3; 503result = LanguageVersion.CSharp8; 508result = LanguageVersion.CSharp9; 513result = LanguageVersion.CSharp10; 518result = LanguageVersion.CSharp11; 523result = LanguageVersion.CSharp12; 528result = LanguageVersion.CSharp13; 532result = LanguageVersion.Default; 540public static LanguageVersion MapSpecifiedToEffectiveVersion(this LanguageVersion version) 544case LanguageVersion.Latest: 545case LanguageVersion.Default: 546case LanguageVersion.LatestMajor: 547return LanguageVersion.CSharp13; 553internal static LanguageVersion CurrentVersion => LanguageVersion.CSharp13; 556internal static bool DisallowInferredTupleElementNames(this LanguageVersion self) 561internal static bool AllowNonTrailingNamedArguments(this LanguageVersion self) 566internal static bool AllowAttributesOnBackingFields(this LanguageVersion self) 571internal static bool AllowImprovedOverloadCandidates(this LanguageVersion self)

336var specified = this.Options.SpecifiedLanguageVersion; 337var effective = specified.MapSpecifiedToEffectiveVersion(); 347if (this.Options.LanguageVersion != LanguageVersion.Preview && 349LanguageVersionFacts.TryParse(errorText.Substring(versionMarker.Length), out var languageVersion))

155LanguageVersion availableVersion = ((CSharpParseOptions)errorLocation.SourceTree.Options).LanguageVersion; 156LanguageVersion requiredVersion; 196internal static void ReportUnsupportedModifiersForLanguageVersion(DeclarationModifiers modifiers, DeclarationModifiers unsupportedModifiers, Location errorLocation, BindingDiagnosticBag diagnostics, LanguageVersion availableVersion, LanguageVersion requiredVersion) 219LanguageVersion availableVersion = ((CSharpParseOptions)location.SourceTree.Options).LanguageVersion; 220LanguageVersion requiredVersion = MessageID.IDS_FeatureStaticAbstractMembersInInterfaces.RequiredVersion(); 233LanguageVersion availableVersion = ((CSharpParseOptions)location.SourceTree.Options).LanguageVersion; 234LanguageVersion requiredVersion = MessageID.IDS_FeaturePartialEventsAndConstructors.RequiredVersion();

5107var languageVersion = ((CSharpParseOptions)this.GetFirstLocation().SourceTree!.Options).LanguageVersion; 5108var requiredVersion = MessageID.IDS_FeatureSealedToStringInRecord.RequiredVersion();

463LanguageVersion availableVersion = ((CSharpParseOptions)location.SourceTree.Options).LanguageVersion; 464LanguageVersion requiredVersion = MessageID.IDS_FeaturePartialProperties.RequiredVersion();

246LanguageVersion availableVersion = ((CSharpParseOptions)location.SourceTree.Options).LanguageVersion; 247LanguageVersion requiredVersion = MessageID.IDS_FeatureStaticAbstractMembersInInterfaces.RequiredVersion();

697if (parseOptions.LanguageVersion == LanguageVersion.CSharp1)

274var languageVersion = this.DeclaringCompilation.LanguageVersion;

1033LanguageVersion requiredVersion = MessageID.IDS_FeatureImplicitImplementationOfNonPublicMembers.RequiredVersion(); 1034LanguageVersion? availableVersion = implementingType.DeclaringCompilation?.LanguageVersion; 1657LanguageVersion requiredVersion = feature.RequiredVersion(); 1658LanguageVersion? availableVersion = implementingType.DeclaringCompilation?.LanguageVersion; 1758LanguageVersion requiredVersion = MessageID.IDS_FeatureStaticAbstractMembersInInterfaces.RequiredVersion(); 1759LanguageVersion? availableVersion = implementingType.DeclaringCompilation?.LanguageVersion;

48LanguageVersion version) 56if (version < LanguageVersion.CSharp10)

38if (context.Compilation.LanguageVersion() < LanguageVersion.CSharp9 ||

36var analyzer = new Analyzer(supportsOrPatterns: semanticModel.SyntaxTree.Options.LanguageVersion() >= LanguageVersion.CSharp9);

34if (context.Compilation.LanguageVersion() < LanguageVersion.CSharp8)

26if (node.GetLanguageVersion() < LanguageVersion.CSharp6)

67if (csOptions.LanguageVersion < LanguageVersion.CSharp7)

51if (ifStatement.SyntaxTree.Options.LanguageVersion() < LanguageVersion.CSharp6)

32if (context.Compilation.LanguageVersion() < LanguageVersion.CSharp9)

14public static bool IsStaticLocalFunctionSupported(LanguageVersion languageVersion) 15=> languageVersion >= LanguageVersion.CSharp8;

36if (compilation.LanguageVersion() < LanguageVersion.CSharp8)

33if (compilation.LanguageVersion() < LanguageVersion.CSharp7_2)

38if (context.Compilation.LanguageVersion() < LanguageVersion.CSharp9)

36if (compilation.LanguageVersion < LanguageVersion.CSharp8)

30=> tree.Options.LanguageVersion() >= LanguageVersion.CSharp7;

44if (compilationContext.Compilation.LanguageVersion() < LanguageVersion.CSharp10)

39=> compilation.LanguageVersion() >= LanguageVersion.CSharp6; 42=> compilation.LanguageVersion() >= LanguageVersion.CSharp6;

44=> compilation.LanguageVersion() >= LanguageVersion.CSharp3;

23options.LanguageVersion() >= LanguageVersion.CSharp8;

41if (context.Compilation.LanguageVersion() < LanguageVersion.CSharp8)

142var languageVersion = body.SyntaxTree.Options.LanguageVersion(); 196var languageVersion = declaration.GetLanguageVersion(); 197if (languageVersion < LanguageVersion.CSharp7) 218if (languageVersion < LanguageVersion.CSharp6)

56var languageVersion = declaration.SyntaxTree.Options.LanguageVersion(); 58languageVersion < LanguageVersion.CSharp7) 68SemanticModel semanticModel, ExpressionBodyPreference preference, LambdaExpressionSyntax declaration, LanguageVersion languageVersion, CancellationToken cancellationToken) 111LanguageVersion languageVersion,

78var languageVersion = semanticModel.Compilation.LanguageVersion();

40if (syntaxTree.Options.LanguageVersion() < LanguageVersion.CSharp9)

63if (compilation.LanguageVersion < LanguageVersion.CSharp8)

56if (compilation.LanguageVersion() < LanguageVersion.CSharp8)

38if (context.Compilation.LanguageVersion() < LanguageVersion.CSharp7)

22=> compilation.LanguageVersion() >= LanguageVersion.CSharp7; 25=> compilation.LanguageVersion() >= LanguageVersion.CSharp8;

35if (compilation.LanguageVersion() < LanguageVersion.CSharp9)

61if (compilation.LanguageVersion() < LanguageVersion.CSharp7) 128if (options.LanguageVersion() < LanguageVersion.CSharp10)

41if (context.Compilation.LanguageVersion() >= LanguageVersion.CSharp11)

36=> compilation.LanguageVersion() >= LanguageVersion.CSharp6;

36return compilation.LanguageVersion() >= LanguageVersion.CSharp3;

59if (syntaxTree.Options.LanguageVersion() < LanguageVersion.CSharp9)

45if (context.Compilation.LanguageVersion() < LanguageVersion.CSharp8) 66asExpression, out var conditionalAccessExpression, out var binaryExpression, out var isPatternExpression, out var requiredLanguageVersion))

61if (syntaxTree.Options.LanguageVersion() < LanguageVersion.CSharp7)

51if (context.Compilation.LanguageVersion() < LanguageVersion.CSharp7)

42if (context.Compilation.LanguageVersion() < LanguageVersion.CSharp9)

19out LanguageVersion requiredLanguageVersion) 24requiredLanguageVersion = LanguageVersion.CSharp8; 46requiredLanguageVersion = LanguageVersion.CSharp10; 78requiredLanguageVersion = (LanguageVersion)Math.Max((int)requiredLanguageVersion, (int)LanguageVersion.CSharp9);

71if (context.Compilation.LanguageVersion() < LanguageVersion.CSharp8)

25=> compilation.LanguageVersion() >= LanguageVersion.CSharp7;

53if (compilation.LanguageVersion() < LanguageVersion.CSharp7)

22LanguageVersion languageVersion, 116LanguageVersion languageVersion, 125languageVersion >= LanguageVersion.CSharp7 || 126(languageVersion >= LanguageVersion.CSharp6 && IsSupportedInCSharp6(declarationKind)); 181private static bool TryGetExpression(StatementSyntax firstStatement, LanguageVersion languageVersion, [NotNullWhen(true)] out ExpressionSyntax? expression, out SyntaxToken semicolonToken) 204if (languageVersion >= LanguageVersion.CSharp7 && throwStatement.Expression != null)

9public static LanguageVersion LanguageVersion(this Compilation compilation)

25if (parseOptions.LanguageVersion < LanguageVersion.CSharp7_1 ||

9public static bool IsCSharp14OrAbove(this LanguageVersion languageVersion) 10=> languageVersion >= LanguageVersion.Preview; 12public static bool IsCSharp13OrAbove(this LanguageVersion languageVersion) 13=> languageVersion >= LanguageVersion.CSharp13; 15public static bool IsCSharp12OrAbove(this LanguageVersion languageVersion) 16=> languageVersion >= LanguageVersion.CSharp12; 18public static bool IsCSharp11OrAbove(this LanguageVersion languageVersion) 19=> languageVersion >= LanguageVersion.CSharp11; 21public static bool HasConstantInterpolatedStrings(this LanguageVersion languageVersion) 22=> languageVersion >= LanguageVersion.CSharp10; 24public static bool SupportsCollectionExpressions(this LanguageVersion languageVersion) 27public static bool SupportsPrimaryConstructors(this LanguageVersion languageVersion) 30public static bool SupportsExtensions(this LanguageVersion languageVersion) 36internal const LanguageVersion CSharpNext = LanguageVersion.Preview;

9public static LanguageVersion LanguageVersion(this ParseOptions options)

514var languageVersion = semanticModel.SyntaxTree.Options.LanguageVersion(); 517return languageVersion >= LanguageVersion.CSharp11 && semanticModel.Compilation.SupportsRuntimeCapability(RuntimeCapability.NumericIntPtr);

25public static LanguageVersion GetLanguageVersion(this SyntaxNode node)

47=> options.LanguageVersion() >= LanguageVersion.CSharp6; 50=> options.LanguageVersion() >= LanguageVersion.CSharp7; 53=> options.LanguageVersion() >= LanguageVersion.CSharp7; 56=> options.LanguageVersion() >= LanguageVersion.CSharp9; 59=> options.LanguageVersion() >= LanguageVersion.CSharp10; 62=> options.LanguageVersion() >= LanguageVersion.CSharp9; 65=> options.LanguageVersion() >= LanguageVersion.CSharp10; 68=> options.LanguageVersion() >= LanguageVersion.CSharp7; 75=> options.LanguageVersion() >= LanguageVersion.CSharp10; 1417=> options.LanguageVersion() >= LanguageVersion.CSharp9;

19if (parseOptions.LanguageVersion < LanguageVersion.CSharp7_1)

1589if (originalSemanticModel.Compilation.LanguageVersion() < LanguageVersion.CSharp9 &&

839=> originalExpression.GetLanguageVersion() >= LanguageVersion.CSharp9;

314if (!conversion.Exists && expression is LambdaExpressionSyntax && semanticModel.Compilation.LanguageVersion() >= LanguageVersion.CSharp10)

34=> options.LanguageVersion() >= LanguageVersion.CSharp7_3;

40if (root.GetLanguageVersion() < LanguageVersion.CSharp11)

100parent.SyntaxTree.Options.LanguageVersion() >= LanguageVersion.CSharp9)

67private static LanguageVersion RequiredVersion(ImmutableArray<Diagnostic> diagnostics) 69LanguageVersion max = 0; 73LanguageVersionFacts.TryParse(requiredVersion, out var required)) 79max = LanguageVersion.Preview; 91Contract.ThrowIfFalse(LanguageVersionFacts.TryParse(newVersion, out var parsedNewVersion)); 105Contract.ThrowIfFalse(LanguageVersionFacts.TryParse(newVersion, out var parsedNewVersion)); 108var mappedVersion = parsedNewVersion.MapSpecifiedToEffectiveVersion();

48=> compilation.LanguageVersion() >= LanguageVersion.CSharp6;

26=> options.LanguageVersion() >= LanguageVersion.CSharp9;

87var languageVersion = semanticModel.SyntaxTree.Options.LanguageVersion(); 90if (languageVersion >= LanguageVersion.CSharp8)

49var languageVersion = tree.Options.LanguageVersion(); 86LanguageVersion languageVersion, 161LanguageVersion languageVersion, 172if (languageVersion >= LanguageVersion.CSharp9)

12public readonly LanguageVersion LanguageVersion; 14public CSharpCodeGenerationContextInfo(CodeGenerationContext context, CSharpCodeGenerationOptions options, CSharpCodeGenerationService service, LanguageVersion languageVersion)

110info.LanguageVersion >= LanguageVersion.CSharp10)

177BasePropertyDeclarationSyntax baseProperty, LanguageVersion languageVersion, ExpressionBodyPreference preference, CancellationToken cancellationToken, 252SyntaxKind declarationKind, AccessorDeclarationSyntax accessor, LanguageVersion languageVersion, ExpressionBodyPreference preference, CancellationToken cancellationToken,

43var languageVersion = semanticModel.Compilation.LanguageVersion().MapSpecifiedToEffectiveVersion(); 44var isLanguageVersionGreaterOrEqualToCSharp8 = languageVersion >= LanguageVersion.CSharp8;

196=> ((CSharpParseOptions)options).LanguageVersion >= LanguageVersion.CSharp7;

196LanguageVersion = LanguageVersion.CSharp9, 219LanguageVersion = LanguageVersion.CSharp12, 537LanguageVersion = LanguageVersion.CSharp10, 563LanguageVersion = LanguageVersion.CSharp12, 588LanguageVersion = LanguageVersion.CSharp12, 607LanguageVersion = LanguageVersion.CSharp12, 615LanguageVersion = LanguageVersion.CSharp12, 641LanguageVersion = LanguageVersion.CSharp12, 661LanguageVersion = LanguageVersion.CSharp12, 684LanguageVersion = LanguageVersion.CSharp12, 730LanguageVersion = LanguageVersion.CSharp12, 776LanguageVersion = LanguageVersion.CSharp12, 822LanguageVersion = LanguageVersion.CSharp12, 846LanguageVersion = LanguageVersion.CSharp12,

2480""", new(parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9))); 2582""", new(parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9))); 2596""", new(parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp12))); 2620""", new(parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9))); 2634""", new(parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp12)));

45LanguageVersion = LanguageVersion.CSharp9, 64LanguageVersion = LanguageVersion.CSharp9, 78LanguageVersion = LanguageVersion.CSharp10, 98LanguageVersion = LanguageVersion.CSharp10, 123LanguageVersion = LanguageVersion.CSharp10, 148LanguageVersion = LanguageVersion.CSharp10, 175LanguageVersion = LanguageVersion.CSharp10, 200LanguageVersion = LanguageVersion.CSharp10, 227LanguageVersion = LanguageVersion.CSharp10, 252LanguageVersion = LanguageVersion.CSharp10, 284LanguageVersion = LanguageVersion.CSharp10, 315LanguageVersion = LanguageVersion.CSharp10, 338LanguageVersion = LanguageVersion.CSharp10, 360LanguageVersion = LanguageVersion.CSharp10, 383LanguageVersion = LanguageVersion.CSharp10, 405LanguageVersion = LanguageVersion.CSharp10, 431LanguageVersion = LanguageVersion.CSharp10, 459LanguageVersion = LanguageVersion.CSharp10, 485LanguageVersion = LanguageVersion.CSharp10, 512LanguageVersion = LanguageVersion.CSharp10, 540LanguageVersion = LanguageVersion.CSharp10,

30LanguageVersion = LanguageVersion.CSharp9, 46LanguageVersion = LanguageVersion.CSharp10, 65LanguageVersion = LanguageVersion.CSharp10, 84LanguageVersion = LanguageVersion.CSharp10, 104LanguageVersion = LanguageVersion.CSharp10, 123LanguageVersion = LanguageVersion.CSharp10, 141LanguageVersion = LanguageVersion.CSharp10, 159LanguageVersion = LanguageVersion.CSharp10, 189LanguageVersion = LanguageVersion.CSharp10, 211LanguageVersion = LanguageVersion.CSharp10, 237LanguageVersion = LanguageVersion.CSharp10, 265LanguageVersion = LanguageVersion.CSharp10, 292LanguageVersion = LanguageVersion.CSharp10, 318LanguageVersion = LanguageVersion.CSharp10, 346LanguageVersion = LanguageVersion.CSharp10, 374LanguageVersion = LanguageVersion.CSharp10, 413LanguageVersion = LanguageVersion.CSharp10, 445LanguageVersion = LanguageVersion.CSharp10, 477LanguageVersion = LanguageVersion.CSharp10, 523LanguageVersion = LanguageVersion.CSharp10, 569LanguageVersion = LanguageVersion.CSharp10, 617LanguageVersion = LanguageVersion.CSharp10, 669LanguageVersion = LanguageVersion.CSharp12, 722LanguageVersion = LanguageVersion.CSharp12, 775LanguageVersion = LanguageVersion.CSharp12, 793LanguageVersion = LanguageVersion.CSharp10, 812LanguageVersion = LanguageVersion.CSharp10, 838LanguageVersion = LanguageVersion.CSharp10, 857LanguageVersion = LanguageVersion.CSharp10, 883LanguageVersion = LanguageVersion.CSharp10, 902LanguageVersion = LanguageVersion.CSharp10, 930LanguageVersion = LanguageVersion.CSharp10, 960LanguageVersion = LanguageVersion.CSharp10, 987LanguageVersion = LanguageVersion.CSharp10, 1015LanguageVersion = LanguageVersion.CSharp10, 1085LanguageVersion = LanguageVersion.CSharp11, 1153LanguageVersion = LanguageVersion.CSharp11, 1223LanguageVersion = LanguageVersion.CSharp11, 1307LanguageVersion = LanguageVersion.CSharp11, 1377LanguageVersion = LanguageVersion.CSharp11, 1447LanguageVersion = LanguageVersion.CSharp11, 1466LanguageVersion = LanguageVersion.CSharp10, 1485LanguageVersion = LanguageVersion.CSharp10,

27private static readonly LanguageVersion CSharp9 = LanguageVersion.CSharp9; 2032LanguageVersion = LanguageVersion.CSharp9, 2073LanguageVersion = LanguageVersion.CSharp9, 2378LanguageVersion = LanguageVersion.CSharp9, 2433LanguageVersion = LanguageVersion.CSharp9,

146LanguageVersion = LanguageVersion.CSharp10,

21private static readonly LanguageVersion CSharp14 = LanguageVersion.Preview; 229LanguageVersion = LanguageVersion.CSharp13, 267LanguageVersion = LanguageVersion.CSharp13, 349LanguageVersion = LanguageVersion.CSharp13, 399LanguageVersion = LanguageVersion.CSharp13, 474LanguageVersion = LanguageVersion.CSharp10,

206LanguageVersion = LanguageVersion.CSharp10

3489new(parseOptions: TestOptions.Regular.WithLanguageVersion(CodeAnalysis.CSharp.LanguageVersion.CSharp6))); 3517new(parseOptions: TestOptions.Regular.WithLanguageVersion(CodeAnalysis.CSharp.LanguageVersion.CSharp6))); 3545new(parseOptions: TestOptions.Regular.WithLanguageVersion(CodeAnalysis.CSharp.LanguageVersion.CSharp6))); 3573new(parseOptions: TestOptions.Regular.WithLanguageVersion(CodeAnalysis.CSharp.LanguageVersion.CSharp6)));

63LanguageVersion = LanguageVersion.CSharp10, 84LanguageVersion = LanguageVersion.CSharp10, 901LanguageVersion = LanguageVersion.CSharp12,

8306new(parseOptions: TestOptions.Regular.WithLanguageVersion(CodeAnalysis.CSharp.LanguageVersion.CSharp6))); 8336new(parseOptions: TestOptions.Regular.WithLanguageVersion(CodeAnalysis.CSharp.LanguageVersion.CSharp6))); 8366new(parseOptions: TestOptions.Regular.WithLanguageVersion(CodeAnalysis.CSharp.LanguageVersion.CSharp6))); 8396new(parseOptions: TestOptions.Regular.WithLanguageVersion(CodeAnalysis.CSharp.LanguageVersion.CSharp6)));

1740""", new(parseOptions: new CSharpParseOptions(LanguageVersion.CSharp7)));

87LanguageVersion = LanguageVersion.CSharp12, 119LanguageVersion = LanguageVersion.CSharp12, 154LanguageVersion = LanguageVersion.CSharp12, 203LanguageVersion = LanguageVersion.CSharp9, 3870LanguageVersion = LanguageVersion.CSharp7_2, 3907LanguageVersion = LanguageVersion.CSharp8, 7918LanguageVersion = LanguageVersion.CSharp7_1, 9902LanguageVersion = LanguageVersion.CSharp9, 10019LanguageVersion = LanguageVersion.CSharp12, 10049LanguageVersion = LanguageVersion.CSharp12, 10079LanguageVersion = LanguageVersion.CSharp12, 10109LanguageVersion = LanguageVersion.CSharp12, 10144LanguageVersion = LanguageVersion.CSharp12, 10176LanguageVersion = LanguageVersion.CSharp9, 10236LanguageVersion = LanguageVersion.CSharp9, 10271LanguageVersion = LanguageVersion.CSharp9, 10306LanguageVersion = LanguageVersion.CSharp9, 10470LanguageVersion = LanguageVersion.CSharp5, 10515LanguageVersion = LanguageVersion.CSharp12, 10548LanguageVersion = LanguageVersion.CSharp12, 10582LanguageVersion = LanguageVersion.CSharp12, 10616LanguageVersion = LanguageVersion.CSharp12, 10647LanguageVersion = LanguageVersion.CSharp12, 10678LanguageVersion = LanguageVersion.Preview, 10710LanguageVersion = LanguageVersion.Preview, 10742LanguageVersion = LanguageVersion.CSharp12, 10780LanguageVersion = LanguageVersion.CSharp12, 10812LanguageVersion = LanguageVersion.Preview, 10846LanguageVersion = LanguageVersion.Preview, 10879LanguageVersion = LanguageVersion.CSharp12, 10911LanguageVersion = LanguageVersion.CSharp12, 10944LanguageVersion = LanguageVersion.CSharp12, 10977LanguageVersion = LanguageVersion.CSharp12, 11008LanguageVersion = LanguageVersion.CSharp12, 11039LanguageVersion = LanguageVersion.CSharp12, 11072LanguageVersion = LanguageVersion.CSharp12, 11105LanguageVersion = LanguageVersion.CSharp12, 11178LanguageVersion = LanguageVersion.CSharp12, 11250LanguageVersion = LanguageVersion.CSharp12, 11322LanguageVersion = LanguageVersion.CSharp7_3, 11359LanguageVersion = LanguageVersion.CSharp7_2, 11397LanguageVersion = LanguageVersion.CSharp12, 11538LanguageVersion = LanguageVersion.CSharp12, 11726LanguageVersion = LanguageVersion.CSharp9, 11769LanguageVersion = LanguageVersion.CSharp10,

218""", new TestParameters(parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp6)));

163""", new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp5)));

25LanguageVersion = LanguageVersion.CSharp9 50LanguageVersion = LanguageVersion.CSharp8 75LanguageVersion = LanguageVersion.CSharp9,

26private static readonly ParseOptions CSharp72ParseOptions = CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp7_2); 27private static readonly ParseOptions CSharp8ParseOptions = CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp8);

134LanguageVersion = LanguageVersion.CSharp11, 156LanguageVersion = LanguageVersion.CSharp11, 178LanguageVersion = LanguageVersion.CSharp11, 194LanguageVersion = LanguageVersion.CSharp11, 225LanguageVersion = LanguageVersion.CSharp11, 245LanguageVersion = LanguageVersion.CSharp11, 270LanguageVersion = LanguageVersion.CSharp11, 287LanguageVersion = LanguageVersion.CSharp11, 312LanguageVersion = LanguageVersion.CSharp11, 329LanguageVersion = LanguageVersion.CSharp11, 353LanguageVersion = LanguageVersion.CSharp11, 384LanguageVersion = LanguageVersion.CSharp11, 404LanguageVersion = LanguageVersion.CSharp11, 420LanguageVersion = LanguageVersion.CSharp10, 437LanguageVersion = LanguageVersion.CSharp11, 453LanguageVersion = LanguageVersion.CSharp11, 477LanguageVersion = LanguageVersion.CSharp11, 501LanguageVersion = LanguageVersion.CSharp11, 523LanguageVersion = LanguageVersion.CSharp11, 545LanguageVersion = LanguageVersion.CSharp11, 569LanguageVersion = LanguageVersion.CSharp11, 591LanguageVersion = LanguageVersion.CSharp11,

21CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp7_3); 71await TestMissingInRegularAndScriptAsync(text, new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp12)));

403LanguageVersion = LanguageVersion.CSharp7, 895LanguageVersion = LanguageVersion.CSharp10, 1263LanguageVersion = LanguageVersion.CSharp12, 1295LanguageVersion = LanguageVersion.CSharp12, 1327LanguageVersion = LanguageVersion.CSharp12, 1383LanguageVersion = LanguageVersion.CSharp12, 1439LanguageVersion = LanguageVersion.CSharp12, 1495LanguageVersion = LanguageVersion.CSharp12, 1551LanguageVersion = LanguageVersion.CSharp12, 1569LanguageVersion = LanguageVersion.CSharp12, 1587LanguageVersion = LanguageVersion.CSharp12, 1605LanguageVersion = LanguageVersion.CSharp12, 1626LanguageVersion = LanguageVersion.CSharp12, 1647LanguageVersion = LanguageVersion.CSharp12, 1670LanguageVersion = LanguageVersion.CSharp12, 1709LanguageVersion = LanguageVersion.CSharp12, 1734LanguageVersion = LanguageVersion.CSharp12, 1750LanguageVersion = LanguageVersion.CSharp12, 1789LanguageVersion = LanguageVersion.CSharp12, 1828LanguageVersion = LanguageVersion.CSharp12, 1857LanguageVersion = LanguageVersion.CSharp12, 1875LanguageVersion = LanguageVersion.CSharp12, 1893LanguageVersion = LanguageVersion.CSharp12, 1918LanguageVersion = LanguageVersion.CSharp12, 1960LanguageVersion = LanguageVersion.CSharp12, 1985LanguageVersion = LanguageVersion.CSharp12, 2023LanguageVersion = LanguageVersion.CSharp12, 2069LanguageVersion = LanguageVersion.CSharp12, 2117LanguageVersion = LanguageVersion.CSharp12, 2165LanguageVersion = LanguageVersion.CSharp12, 2223LanguageVersion = LanguageVersion.CSharp12, 2257LanguageVersion = LanguageVersion.CSharp12, 2285LanguageVersion = LanguageVersion.CSharp12, 2313LanguageVersion = LanguageVersion.CSharp12, 2345LanguageVersion = LanguageVersion.CSharp12, 2374LanguageVersion = LanguageVersion.CSharp13,

23private static Task TestMissingAsync(string testCode, LanguageVersion version = LanguageVersion.CSharp12) 26private static Task TestAsync(string testCode, string fixedCode, LanguageVersion version = LanguageVersion.CSharp12) 43""", LanguageVersion.CSharp7_1); 60LanguageVersion.CSharp7_2); 389LanguageVersion.CSharp12);

55LanguageVersion = LanguageVersion.CSharp10 85LanguageVersion = LanguageVersion.CSharp10 117LanguageVersion = LanguageVersion.CSharp10 155LanguageVersion = LanguageVersion.CSharp10 190LanguageVersion = LanguageVersion.CSharp10 217LanguageVersion = LanguageVersion.CSharp10 249LanguageVersion = LanguageVersion.CSharp10 289LanguageVersion = LanguageVersion.CSharp10 327LanguageVersion = LanguageVersion.CSharp10, 336LanguageVersion = LanguageVersion.CSharp10, 362LanguageVersion = LanguageVersion.CSharp10

58LanguageVersion = LanguageVersion.CSharp10, 896LanguageVersion = LanguageVersion.CSharp10,

96initialMarkup, expectedMarkup, new(options: options, parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp10)));

202LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 266LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 637LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 678LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8,

457LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 472LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 495LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 519LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 543LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 663LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 683LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 719LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 759LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 803LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8,

24private static readonly TestParameters s_nullableFeature = new TestParameters(parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8));

99LanguageVersion = LanguageVersion.CSharp8 131LanguageVersion = LanguageVersion.CSharp8, 163LanguageVersion = LanguageVersion.CSharp9, 200LanguageVersion = LanguageVersion.CSharp9,

5578LanguageVersion = LanguageVersion.CSharp7_1, 5598LanguageVersion = LanguageVersion.CSharp7_1, 5618LanguageVersion = LanguageVersion.CSharp7_1, 5651LanguageVersion = LanguageVersion.CSharp7_1, 5695LanguageVersion = LanguageVersion.CSharp7_1, 5715LanguageVersion = LanguageVersion.CSharp7_1, 5735LanguageVersion = LanguageVersion.CSharp7_1, 5768LanguageVersion = LanguageVersion.CSharp7_1, 5801LanguageVersion = LanguageVersion.CSharp7_1, 5817LanguageVersion = LanguageVersion.CSharp7_1, 5833LanguageVersion = LanguageVersion.CSharp7_1, 5849LanguageVersion = LanguageVersion.CSharp7_1, 5874LanguageVersion = LanguageVersion.CSharp7_1, 5892LanguageVersion = LanguageVersion.CSharp10, 5910LanguageVersion = LanguageVersion.CSharp10, 7881LanguageVersion = LanguageVersion.CSharp9, 7948LanguageVersion = LanguageVersion.CSharp8 7973LanguageVersion = LanguageVersion.CSharp9, 7989LanguageVersion = LanguageVersion.CSharp8 8014LanguageVersion = LanguageVersion.CSharp9, 8030LanguageVersion = LanguageVersion.CSharp8, 8055LanguageVersion = LanguageVersion.CSharp9, 8122LanguageVersion = LanguageVersion.CSharp8 8147LanguageVersion = LanguageVersion.CSharp9, 8163LanguageVersion = LanguageVersion.CSharp8 8188LanguageVersion = LanguageVersion.CSharp9, 8204LanguageVersion = LanguageVersion.CSharp8 8229LanguageVersion = LanguageVersion.CSharp9, 8368LanguageVersion = LanguageVersion.CSharp9, 9136LanguageVersion = LanguageVersion.CSharp9 9154LanguageVersion = LanguageVersion.CSharp9 9179LanguageVersion = LanguageVersion.CSharp9 9197LanguageVersion = LanguageVersion.CSharp9 9215LanguageVersion = LanguageVersion.CSharp9 9283LanguageVersion = LanguageVersion.CSharp9 9303LanguageVersion = LanguageVersion.CSharp9 9323LanguageVersion = LanguageVersion.CSharp9 9352LanguageVersion = LanguageVersion.CSharp9 9382LanguageVersion = LanguageVersion.CSharp9 9399LanguageVersion = LanguageVersion.CSharp9, 9420LanguageVersion = LanguageVersion.CSharp9, 9451LanguageVersion = LanguageVersion.CSharp9, 9474LanguageVersion = LanguageVersion.CSharp9, 9492LanguageVersion = LanguageVersion.CSharp9, 9509LanguageVersion = LanguageVersion.CSharp9, 10311LanguageVersion = LanguageVersion.CSharp9, 10348LanguageVersion = LanguageVersion.CSharp9, 11030LanguageVersion = LanguageVersion.CSharp10, 11449public Task DoNotRemoveMethodGroupToSpecificDelegateType(LanguageVersion version) 11500LanguageVersion = LanguageVersion.CSharp10, 11530LanguageVersion = LanguageVersion.CSharp10, 11551LanguageVersion = LanguageVersion.CSharp10, 11570LanguageVersion = LanguageVersion.CSharp10, 11588LanguageVersion = LanguageVersion.CSharp10, 11606LanguageVersion = LanguageVersion.CSharp10, 11626LanguageVersion = LanguageVersion.CSharp10, 11645LanguageVersion = LanguageVersion.CSharp10, 11658LanguageVersion = LanguageVersion.CSharp10, 11677LanguageVersion = LanguageVersion.CSharp10, 11698LanguageVersion = LanguageVersion.CSharp10, 11714LanguageVersion = LanguageVersion.CSharp10, 11730LanguageVersion = LanguageVersion.CSharp10, 11751LanguageVersion = LanguageVersion.CSharp10, 11771LanguageVersion = LanguageVersion.CSharp10, 11799LanguageVersion = LanguageVersion.CSharp10, 11846LanguageVersion = LanguageVersion.CSharp10, 11884LanguageVersion = LanguageVersion.CSharp10, 11908LanguageVersion = LanguageVersion.CSharp10, 11952LanguageVersion = LanguageVersion.CSharp10, 11994LanguageVersion = LanguageVersion.CSharp10, 12010LanguageVersion = LanguageVersion.CSharp10, 12039LanguageVersion = LanguageVersion.CSharp10, 12068LanguageVersion = LanguageVersion.CSharp10, 12097LanguageVersion = LanguageVersion.CSharp10, 12126LanguageVersion = LanguageVersion.CSharp10, 12155LanguageVersion = LanguageVersion.CSharp10, 12184LanguageVersion = LanguageVersion.CSharp10, 12200LanguageVersion = LanguageVersion.CSharp10, 12223LanguageVersion = LanguageVersion.CSharp10, 12255LanguageVersion = LanguageVersion.CSharp10, 12286LanguageVersion = LanguageVersion.CSharp10, 12304LanguageVersion = LanguageVersion.CSharp10, 12357LanguageVersion = LanguageVersion.CSharp10, 12830LanguageVersion = LanguageVersion.CSharp12, 12846LanguageVersion = LanguageVersion.CSharp12, 12869LanguageVersion = LanguageVersion.CSharp12, 12894LanguageVersion = LanguageVersion.CSharp12, 12925LanguageVersion = LanguageVersion.CSharp12, 12946LanguageVersion = LanguageVersion.CSharp12, 12974LanguageVersion = LanguageVersion.CSharp12, 13016LanguageVersion = LanguageVersion.CSharp12, 13051LanguageVersion = LanguageVersion.CSharp12, 13127LanguageVersion = LanguageVersion.CSharp12, 13165LanguageVersion = LanguageVersion.CSharp12, 13184LanguageVersion = LanguageVersion.CSharp12, 13203LanguageVersion = LanguageVersion.CSharp12, 13220LanguageVersion = LanguageVersion.CSharp12, 13237LanguageVersion = LanguageVersion.CSharp12, 13254LanguageVersion = LanguageVersion.CSharp12, 13273LanguageVersion = LanguageVersion.CSharp12, 13292LanguageVersion = LanguageVersion.CSharp12, 13311LanguageVersion = LanguageVersion.CSharp12, 13332LanguageVersion = LanguageVersion.CSharp12, 13362LanguageVersion = LanguageVersion.CSharp12, 13392LanguageVersion = LanguageVersion.CSharp12, 13505LanguageVersion = LanguageVersion.CSharp13,

53LanguageVersion = LanguageVersion.CSharp9, 73LanguageVersion = LanguageVersion.CSharp8, 104LanguageVersion = LanguageVersion.CSharp9, 129LanguageVersion = LanguageVersion.CSharp9, 160LanguageVersion = LanguageVersion.CSharp9, 191LanguageVersion = LanguageVersion.CSharp9, 222LanguageVersion = LanguageVersion.CSharp9, 241LanguageVersion = LanguageVersion.CSharp9, 272LanguageVersion = LanguageVersion.CSharp9, 309LanguageVersion = LanguageVersion.CSharp9, 331LanguageVersion = LanguageVersion.CSharp9, 354LanguageVersion = LanguageVersion.CSharp9, 405LanguageVersion = LanguageVersion.CSharp9, 434LanguageVersion = LanguageVersion.CSharp9, 464LanguageVersion = LanguageVersion.CSharp9, 497LanguageVersion = LanguageVersion.CSharp9, 530LanguageVersion = LanguageVersion.CSharp9, 566LanguageVersion = LanguageVersion.CSharp9,

453LanguageVersion = LanguageVersion.CSharp10, 600LanguageVersion = LanguageVersion.CSharp10, 975LanguageVersion = LanguageVersion.CSharp5, 1050LanguageVersion = LanguageVersion.CSharp5, 2013LanguageVersion = LanguageVersion.CSharp10,

28LanguageVersion version = LanguageVersion.CSharp12, 43LanguageVersion version = LanguageVersion.CSharp12, 63""", LanguageVersion.CSharp10); 115LanguageVersion = LanguageVersion.CSharp12,

862LanguageVersion = LanguageVersion.CSharp9, 881LanguageVersion = LanguageVersion.CSharp9, 902LanguageVersion = LanguageVersion.CSharp9, 929LanguageVersion = LanguageVersion.CSharp9, 953LanguageVersion = LanguageVersion.CSharp9, 976LanguageVersion = LanguageVersion.CSharp9, 999LanguageVersion = LanguageVersion.CSharp9,

418LanguageVersion = LanguageVersion.CSharp9, 445LanguageVersion = LanguageVersion.CSharp9, 464LanguageVersion = LanguageVersion.CSharp9, 491LanguageVersion = LanguageVersion.CSharp9, 1127LanguageVersion = LanguageVersion.CSharp9, 3016LanguageVersion = LanguageVersion.CSharp9, 3150LanguageVersion = LanguageVersion.CSharp13, 3242LanguageVersion = LanguageVersion.CSharp13, 3274LanguageVersion = LanguageVersion.CSharp13, 3295LanguageVersion = LanguageVersion.CSharp13, 3317LanguageVersion = LanguageVersion.CSharp13, 3346LanguageVersion = LanguageVersion.CSharp13, 3393LanguageVersion = LanguageVersion.CSharp13, 3420LanguageVersion = LanguageVersion.CSharp13,

54LanguageVersion = LanguageVersion.Preview, 74LanguageVersion = LanguageVersion.Preview,

818LanguageVersion = LanguageVersion.CSharp6, 2448""", new TestParameters(options: PreferDiscard, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8))); 2480""", new TestParameters(options: PreferDiscard, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp9))); 2484[CombinatorialValues(LanguageVersion.CSharp8, LanguageVersion.CSharp9)] LanguageVersion languageVersion) 2556LanguageVersion = LanguageVersion.CSharp9, 2704""", new TestParameters(options: PreferDiscard, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8))); 2709[CombinatorialValues(LanguageVersion.CSharp8, LanguageVersion.CSharp9)] LanguageVersion languageVersion) 2768LanguageVersion = LanguageVersion.CSharp9, 2810""", new TestParameters(options: PreferDiscard, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8))); 2815[CombinatorialValues(LanguageVersion.CSharp8, LanguageVersion.CSharp9)] LanguageVersion languageVersion) 2899LanguageVersion = LanguageVersion.CSharp9, 2941""", optionName: optionName, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 2976""", optionName: optionName, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp9)); 3058LanguageVersion = LanguageVersion.CSharp9, 5011""", optionName, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 7202""", PreferDiscard, new CSharpParseOptions(LanguageVersion.CSharp9)); 7623""", parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 7637""", parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 7659""", optionName: nameof(PreferDiscard), parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 7681""", optionName: nameof(PreferDiscard), parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 7699""", optionName: nameof(PreferDiscard), parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 7842""", new TestParameters(options: PreferDiscard, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8))); 7847[CombinatorialValues(LanguageVersion.CSharp8, LanguageVersion.CSharp9)] LanguageVersion languageVersion) 7924LanguageVersion = LanguageVersion.CSharp9, 8230""", new TestParameters(options: PreferUnusedLocal, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp7_3))); 8266""", new TestParameters(options: PreferUnusedLocal, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8))); 8286parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9)); 8307parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9)); 8450""", new TestParameters(options: PreferDiscard, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8))); 8455[CombinatorialValues(LanguageVersion.CSharp8, LanguageVersion.CSharp9)] LanguageVersion languageVersion) 8484""", new TestParameters(options: PreferDiscard, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8))); 8508""", new TestParameters(options: PreferDiscard, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8))); 8536LanguageVersion = LanguageVersion.CSharp9, 8546[CombinatorialValues(LanguageVersion.CSharp8, LanguageVersion.CSharp9)] LanguageVersion languageVersion) 8572[CombinatorialValues(LanguageVersion.CSharp8, LanguageVersion.CSharp9)] LanguageVersion languageVersion) 8613""", new TestParameters(options: PreferDiscard, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8))); 8645LanguageVersion = LanguageVersion.CSharp9, 8982LanguageVersion = LanguageVersion.CSharp9, 9013LanguageVersion = LanguageVersion.CSharp9, 9048LanguageVersion = LanguageVersion.CSharp9, 9083LanguageVersion = LanguageVersion.CSharp9, 9118LanguageVersion = LanguageVersion.CSharp9, 9153LanguageVersion = LanguageVersion.CSharp9, 9188LanguageVersion = LanguageVersion.CSharp11, 9224LanguageVersion = LanguageVersion.CSharp11, 9260LanguageVersion = LanguageVersion.CSharp11, 9279LanguageVersion = LanguageVersion.CSharp12, 9396LanguageVersion = LanguageVersion.CSharp12,

79parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp6)));

25private static readonly ImmutableArray<LanguageVersion> s_csharp7_1above = 26[LanguageVersion.CSharp7_1, LanguageVersion.Latest]; 28private static readonly ImmutableArray<LanguageVersion> s_csharp7below = 30LanguageVersion.CSharp7, 31LanguageVersion.CSharp6, 32LanguageVersion.CSharp5, 33LanguageVersion.CSharp4, 34LanguageVersion.CSharp3, 35LanguageVersion.CSharp2, 36LanguageVersion.CSharp1, 42ImmutableArray<LanguageVersion> versions) 44foreach (var version in versions) 52[StringSyntax(PredefinedEmbeddedLanguageNames.CSharpTest)] string initialMarkup, ImmutableArray<LanguageVersion> versions) 54foreach (var version in versions) 741""", [LanguageVersion.CSharp7_1, LanguageVersion.CSharp10, LanguageVersion.CSharp11, LanguageVersion.Latest]); 792""", [LanguageVersion.CSharp7_1, LanguageVersion.CSharp10, LanguageVersion.CSharp11, LanguageVersion.Latest]); 872""", [LanguageVersion.CSharp7_1]); 896""", [LanguageVersion.Latest]);

26LanguageVersion = LanguageVersion.CSharp10 35LanguageVersion = LanguageVersion.CSharp10 44LanguageVersion = LanguageVersion.CSharp10 59LanguageVersion = LanguageVersion.CSharp10 74LanguageVersion = LanguageVersion.CSharp10 89LanguageVersion = LanguageVersion.CSharp10 102LanguageVersion = LanguageVersion.CSharp10 121LanguageVersion = LanguageVersion.CSharp10 144LanguageVersion = LanguageVersion.CSharp10 163LanguageVersion = LanguageVersion.CSharp10

29LanguageVersion expected, 72LanguageVersion.CSharp8, 73new CSharpParseOptions(LanguageVersion.CSharp7_2)); 84LanguageVersion.CSharp8, 85new CSharpParseOptions(LanguageVersion.CSharp7)); 99LanguageVersion.CSharp7, 100new CSharpParseOptions(LanguageVersion.CSharp6)); 114LanguageVersion.CSharp6, 115new CSharpParseOptions(LanguageVersion.CSharp5)); 129LanguageVersion.CSharp5, 130new CSharpParseOptions(LanguageVersion.CSharp4)); 138#error version:[|{{LanguageVersion.Latest.MapSpecifiedToEffectiveVersion().ToDisplayString()}}|] 141LanguageVersion.Latest.MapSpecifiedToEffectiveVersion(), 142new CSharpParseOptions(LanguageVersion.CSharp7)); 173LanguageVersion.CSharp7_1, 174new CSharpParseOptions(LanguageVersion.CSharp7)); 182#error version:[|{{LanguageVersion.Latest.MapSpecifiedToEffectiveVersion().ToDisplayString()}}|] 185LanguageVersion.Latest.MapSpecifiedToEffectiveVersion(), 186new CSharpParseOptions(LanguageVersion.CSharp7_1)); 197LanguageVersion.CSharp7_1, 198new CSharpParseOptions(LanguageVersion.CSharp7)); 212LanguageVersion.CSharp7_2, 213new CSharpParseOptions(LanguageVersion.CSharp7_1)); 229LanguageVersion.CSharp7_1, 230new CSharpParseOptions(LanguageVersion.CSharp7)); 239#error version:[|{{LanguageVersion.Latest.MapSpecifiedToEffectiveVersion().ToDisplayString()}}|] 242LanguageVersion.Latest.MapSpecifiedToEffectiveVersion(), 243new CSharpParseOptions(LanguageVersion.CSharp7_2)); 256LanguageVersion.CSharp7_3, 257new CSharpParseOptions(LanguageVersion.CSharp7_2)); 267LanguageVersion.CSharp7_3, 268new CSharpParseOptions(LanguageVersion.CSharp7_2)); 278LanguageVersion.CSharp7_3, 279new CSharpParseOptions(LanguageVersion.CSharp7_2)); 289LanguageVersion.CSharp7_3, 290new CSharpParseOptions(LanguageVersion.CSharp7_2)); 300#error version:[|{{LanguageVersion.Latest.MapSpecifiedToEffectiveVersion().ToDisplayString()}}|] 303LanguageVersion.Latest.MapSpecifiedToEffectiveVersion(), 304new CSharpParseOptions(LanguageVersion.CSharp7_3)); 312#error version:[|{{LanguageVersion.CSharp8.ToDisplayString()}}|] 315LanguageVersion.Latest.MapSpecifiedToEffectiveVersion(), 316new CSharpParseOptions(LanguageVersion.CSharp7_3)); 330expected: LanguageVersion.CSharp8, 331new CSharpParseOptions(LanguageVersion.CSharp7_3)); 358LanguageVersion.CSharp7, 383LanguageVersion.CSharp8, 412LanguageVersion.CSharp8, 436LanguageVersion.CSharp9, 552var defaultVersion = LanguageVersion.Default.MapSpecifiedToEffectiveVersion().ToDisplayString(); 604var defaultEffectiveVersion = LanguageVersion.Default.MapSpecifiedToEffectiveVersion().ToDisplayString(); 641LanguageVersion.CSharp9, 642new CSharpParseOptions(LanguageVersion.CSharp8)); 652LanguageVersion.CSharp7_3, 653new CSharpParseOptions(LanguageVersion.CSharp7)); 681LanguageVersion.CSharp7_3, 682new CSharpParseOptions(LanguageVersion.CSharp7)); 706LanguageVersion.CSharp7_3, 707new CSharpParseOptions(LanguageVersion.CSharp7)); 736LanguageVersion.CSharp7_3, 737new CSharpParseOptions(LanguageVersion.CSharp7)); 769expected: LanguageVersion.CSharp8, 770new CSharpParseOptions(LanguageVersion.CSharp7_3)); 796new CSharpParseOptions(LanguageVersion.CSharp7_3)); 807LanguageVersion.CSharp8, 808new CSharpParseOptions(LanguageVersion.CSharp7_3)); 819LanguageVersion.CSharp8, 820new CSharpParseOptions(LanguageVersion.CSharp7_3)); 831LanguageVersion.CSharp8, 832new CSharpParseOptions(LanguageVersion.CSharp7_3)); 842LanguageVersion.CSharp8, 843new CSharpParseOptions(LanguageVersion.CSharp7_3)); 871LanguageVersion.CSharp8, 872new CSharpParseOptions(LanguageVersion.CSharp7_3)); 896LanguageVersion.CSharp8, 897new CSharpParseOptions(LanguageVersion.CSharp7_3)); 926LanguageVersion.CSharp8, 927new CSharpParseOptions(LanguageVersion.CSharp7_3)); 959expected: LanguageVersion.CSharp9, 960new CSharpParseOptions(LanguageVersion.CSharp8)); 983expected: LanguageVersion.CSharp10, 984new CSharpParseOptions(LanguageVersion.CSharp9)); 992LanguageVersion.CSharp12, 993new CSharpParseOptions(LanguageVersion.CSharp11)); 1001LanguageVersion.CSharp12, 1002new CSharpParseOptions(LanguageVersion.CSharp11)); 1010LanguageVersion.CSharp12, 1011new CSharpParseOptions(LanguageVersion.CSharp11)); 1019LanguageVersion.CSharp12, 1020new CSharpParseOptions(LanguageVersion.CSharp11)); 1028LanguageVersion.CSharp12, 1029new CSharpParseOptions(LanguageVersion.CSharp11)); 1037LanguageVersion.CSharp12, 1038new CSharpParseOptions(LanguageVersion.CSharp11)); 1048LanguageVersion.CSharp9, 1049new CSharpParseOptions(LanguageVersion.CSharp8)); 1056LanguageVersion.CSharp10, 1057new CSharpParseOptions(LanguageVersion.CSharp9)); 1073expected: LanguageVersion.CSharp10, 1074new CSharpParseOptions(LanguageVersion.CSharp9)); 1087expected: LanguageVersion.CSharp9, 1088new CSharpParseOptions(LanguageVersion.CSharp8)); 1103expected: LanguageVersion.CSharp11, 1104new CSharpParseOptions(LanguageVersion.CSharp8)); 1115expected: LanguageVersion.CSharp11, 1116new CSharpParseOptions(LanguageVersion.CSharp10)); 1127expected: LanguageVersion.CSharp11, 1128new CSharpParseOptions(LanguageVersion.CSharp10)); 1139expected: LanguageVersion.CSharp11, 1140new CSharpParseOptions(LanguageVersion.CSharp10)); 1154expected: LanguageVersion.CSharp12, 1155new CSharpParseOptions(LanguageVersion.CSharp11));

25private readonly ParseOptions CSharp12 = CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp12); 473new(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp5))); 491""", new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp5))); 533""", new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp5)));

17private static readonly ParseOptions CSharp13 = CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp13);

172LanguageVersion = LanguageVersion.CSharp9, 230LanguageVersion = LanguageVersion.CSharp9, 395LanguageVersion = LanguageVersion.CSharp9,

33LanguageVersion = LanguageVersion.CSharp11, 52LanguageVersion = LanguageVersion.CSharp12, 71LanguageVersion = LanguageVersion.CSharp12, 90LanguageVersion = LanguageVersion.CSharp12, 113LanguageVersion = LanguageVersion.CSharp12, 136LanguageVersion = LanguageVersion.CSharp12, 155LanguageVersion = LanguageVersion.CSharp12, 174LanguageVersion = LanguageVersion.CSharp12, 187LanguageVersion = LanguageVersion.CSharp12, 210LanguageVersion = LanguageVersion.CSharp12, 229LanguageVersion = LanguageVersion.CSharp12, 254LanguageVersion = LanguageVersion.CSharp12, 273LanguageVersion = LanguageVersion.CSharp12, 292LanguageVersion = LanguageVersion.CSharp12, 311LanguageVersion = LanguageVersion.CSharp12, 324LanguageVersion = LanguageVersion.CSharp12, 337LanguageVersion = LanguageVersion.CSharp12, 350LanguageVersion = LanguageVersion.CSharp12, 369LanguageVersion = LanguageVersion.CSharp12, 382LanguageVersion = LanguageVersion.CSharp12, 405LanguageVersion = LanguageVersion.CSharp12, 430LanguageVersion = LanguageVersion.CSharp12, 443LanguageVersion = LanguageVersion.CSharp12, 462LanguageVersion = LanguageVersion.CSharp12, 479LanguageVersion = LanguageVersion.CSharp12, 496LanguageVersion = LanguageVersion.CSharp12, 513LanguageVersion = LanguageVersion.CSharp12, 530LanguageVersion = LanguageVersion.CSharp12, 548LanguageVersion = LanguageVersion.CSharp12, 568LanguageVersion = LanguageVersion.CSharp12, 587LanguageVersion = LanguageVersion.CSharp12, 612LanguageVersion = LanguageVersion.CSharp12, 628LanguageVersion = LanguageVersion.CSharp12, 644LanguageVersion = LanguageVersion.CSharp12, 660LanguageVersion = LanguageVersion.CSharp12, 678LanguageVersion = LanguageVersion.CSharp12, 703LanguageVersion = LanguageVersion.CSharp12, 728LanguageVersion = LanguageVersion.CSharp12, 753LanguageVersion = LanguageVersion.CSharp12, 769LanguageVersion = LanguageVersion.CSharp12, 794LanguageVersion = LanguageVersion.CSharp12, 819LanguageVersion = LanguageVersion.CSharp12, 844LanguageVersion = LanguageVersion.CSharp12, 860LanguageVersion = LanguageVersion.CSharp12, 876LanguageVersion = LanguageVersion.CSharp12, 901LanguageVersion = LanguageVersion.CSharp12, 926LanguageVersion = LanguageVersion.CSharp12, 942LanguageVersion = LanguageVersion.CSharp12, 977LanguageVersion = LanguageVersion.CSharp12, 1007LanguageVersion = LanguageVersion.CSharp12, 1022LanguageVersion = LanguageVersion.CSharp12, 1042LanguageVersion = LanguageVersion.CSharp12, 1071LanguageVersion = LanguageVersion.CSharp12, 1089LanguageVersion = LanguageVersion.CSharp12, 1107LanguageVersion = LanguageVersion.CSharp12, 1125LanguageVersion = LanguageVersion.CSharp12, 1150LanguageVersion = LanguageVersion.CSharp12, 1175LanguageVersion = LanguageVersion.CSharp12, 1210LanguageVersion = LanguageVersion.CSharp12, 1235LanguageVersion = LanguageVersion.CSharp12, 1256LanguageVersion = LanguageVersion.CSharp12, 1275LanguageVersion = LanguageVersion.CSharp12, 1296LanguageVersion = LanguageVersion.CSharp12, 1319LanguageVersion = LanguageVersion.CSharp12, 1344LanguageVersion = LanguageVersion.CSharp12, 1365LanguageVersion = LanguageVersion.CSharp12, 1388LanguageVersion = LanguageVersion.CSharp12, 1413LanguageVersion = LanguageVersion.CSharp12, 1440LanguageVersion = LanguageVersion.CSharp12, 1459LanguageVersion = LanguageVersion.CSharp12, 1480LanguageVersion = LanguageVersion.CSharp12, 1503LanguageVersion = LanguageVersion.CSharp12, 1528LanguageVersion = LanguageVersion.CSharp12, 1554LanguageVersion = LanguageVersion.CSharp12, 1579LanguageVersion = LanguageVersion.CSharp12, 1605LanguageVersion = LanguageVersion.CSharp12, 1630LanguageVersion = LanguageVersion.CSharp12, 1653LanguageVersion = LanguageVersion.CSharp12, 1681LanguageVersion = LanguageVersion.CSharp12, 1700LanguageVersion = LanguageVersion.CSharp12, 1721LanguageVersion = LanguageVersion.CSharp12, 1744LanguageVersion = LanguageVersion.CSharp12, 1769LanguageVersion = LanguageVersion.CSharp12, 1795LanguageVersion = LanguageVersion.CSharp12, 1820LanguageVersion = LanguageVersion.CSharp12, 1846LanguageVersion = LanguageVersion.CSharp12, 1871LanguageVersion = LanguageVersion.CSharp12, 1894LanguageVersion = LanguageVersion.CSharp12, 1922LanguageVersion = LanguageVersion.CSharp12, 1971LanguageVersion = LanguageVersion.CSharp12, 2006LanguageVersion = LanguageVersion.CSharp12, 2045LanguageVersion = LanguageVersion.CSharp12, 2074LanguageVersion = LanguageVersion.CSharp12, 2092LanguageVersion = LanguageVersion.CSharp12, 2111LanguageVersion = LanguageVersion.CSharp12, 2132LanguageVersion = LanguageVersion.CSharp12, 2151LanguageVersion = LanguageVersion.CSharp12, 2170LanguageVersion = LanguageVersion.CSharp12, 2191LanguageVersion = LanguageVersion.CSharp12, 2212LanguageVersion = LanguageVersion.CSharp12, 2231LanguageVersion = LanguageVersion.CSharp12, 2250LanguageVersion = LanguageVersion.CSharp12, 2270LanguageVersion = LanguageVersion.CSharp12, 2300LanguageVersion = LanguageVersion.CSharp12, 2332LanguageVersion = LanguageVersion.CSharp12, 2363LanguageVersion = LanguageVersion.CSharp12, 2396LanguageVersion = LanguageVersion.CSharp12, 2416LanguageVersion = LanguageVersion.CSharp12, 2437LanguageVersion = LanguageVersion.CSharp12, 2460LanguageVersion = LanguageVersion.CSharp12, 2491LanguageVersion = LanguageVersion.CSharp12, 2522LanguageVersion = LanguageVersion.CSharp12, 2560LanguageVersion = LanguageVersion.CSharp12, 2603LanguageVersion = LanguageVersion.CSharp12, 2616LanguageVersion = LanguageVersion.CSharp12, 2643LanguageVersion = LanguageVersion.CSharp12, 2672LanguageVersion = LanguageVersion.CSharp12, 2715LanguageVersion = LanguageVersion.CSharp12, 2736LanguageVersion = LanguageVersion.CSharp12, 2764LanguageVersion = LanguageVersion.CSharp12, 2792LanguageVersion = LanguageVersion.CSharp12, 2820LanguageVersion = LanguageVersion.CSharp12, 2839LanguageVersion = LanguageVersion.CSharp12, 2867LanguageVersion = LanguageVersion.CSharp12, 2886LanguageVersion = LanguageVersion.CSharp12, 2920LanguageVersion = LanguageVersion.CSharp12, 2958LanguageVersion = LanguageVersion.CSharp12, 2992LanguageVersion = LanguageVersion.CSharp12, 3028LanguageVersion = LanguageVersion.CSharp12, 3070LanguageVersion = LanguageVersion.CSharp12, 3106LanguageVersion = LanguageVersion.CSharp12, 3146LanguageVersion = LanguageVersion.CSharp12, 3186LanguageVersion = LanguageVersion.CSharp12, 3222LanguageVersion = LanguageVersion.CSharp12, 3258LanguageVersion = LanguageVersion.CSharp12, 3298LanguageVersion = LanguageVersion.CSharp12, 3338LanguageVersion = LanguageVersion.CSharp12, 3374LanguageVersion = LanguageVersion.CSharp12, 3410LanguageVersion = LanguageVersion.CSharp12, 3446LanguageVersion = LanguageVersion.CSharp12, 3468LanguageVersion = LanguageVersion.CSharp12, 3489LanguageVersion = LanguageVersion.CSharp12, 3508LanguageVersion = LanguageVersion.CSharp12, 3531LanguageVersion = LanguageVersion.CSharp12, 3552LanguageVersion = LanguageVersion.CSharp12, 3575LanguageVersion = LanguageVersion.CSharp12, 3596LanguageVersion = LanguageVersion.CSharp12, 3618LanguageVersion = LanguageVersion.CSharp12, 3640LanguageVersion = LanguageVersion.CSharp12, 3663LanguageVersion = LanguageVersion.CSharp12, 3686LanguageVersion = LanguageVersion.CSharp12, 3711LanguageVersion = LanguageVersion.CSharp12, 3736LanguageVersion = LanguageVersion.CSharp12, 3761LanguageVersion = LanguageVersion.CSharp12, 3803LanguageVersion = LanguageVersion.CSharp12, 3843LanguageVersion = LanguageVersion.CSharp12, 3885LanguageVersion = LanguageVersion.CSharp12, 3920LanguageVersion = LanguageVersion.CSharp12, 3955LanguageVersion = LanguageVersion.CSharp12, 3975LanguageVersion = LanguageVersion.CSharp12, 4010LanguageVersion = LanguageVersion.CSharp12, 4031LanguageVersion = LanguageVersion.CSharp12, 4052LanguageVersion = LanguageVersion.CSharp12, 4081LanguageVersion = LanguageVersion.CSharp12, 4105LanguageVersion = LanguageVersion.CSharp12, 4125LanguageVersion = LanguageVersion.CSharp12, 4163LanguageVersion = LanguageVersion.CSharp12, 4199LanguageVersion = LanguageVersion.CSharp12, 4234LanguageVersion = LanguageVersion.CSharp12, 4255LanguageVersion = LanguageVersion.CSharp12, 4299LanguageVersion = LanguageVersion.CSharp12, 4331LanguageVersion = LanguageVersion.CSharp12, 4385LanguageVersion = LanguageVersion.CSharp12, 4455LanguageVersion = LanguageVersion.CSharp12, 4492LanguageVersion = LanguageVersion.CSharp12, 4514LanguageVersion = LanguageVersion.CSharp12, 4570LanguageVersion = LanguageVersion.CSharp12, 4592LanguageVersion = LanguageVersion.CSharp12, 4633LanguageVersion = LanguageVersion.CSharp12, 4655LanguageVersion = LanguageVersion.CSharp12, 4696LanguageVersion = LanguageVersion.CSharp12, 4718LanguageVersion = LanguageVersion.CSharp12, 4774LanguageVersion = LanguageVersion.CSharp12, 4826LanguageVersion = LanguageVersion.CSharp12, 4847LanguageVersion = LanguageVersion.CSharp12, 4868LanguageVersion = LanguageVersion.CSharp12, 4889LanguageVersion = LanguageVersion.CSharp12, 4910LanguageVersion = LanguageVersion.CSharp12, 4931LanguageVersion = LanguageVersion.CSharp12, 4952LanguageVersion = LanguageVersion.CSharp12, 4973LanguageVersion = LanguageVersion.CSharp12, 4998LanguageVersion = LanguageVersion.CSharp12, 5023LanguageVersion = LanguageVersion.CSharp12, 5045LanguageVersion = LanguageVersion.CSharp12, 5066LanguageVersion = LanguageVersion.CSharp12, 5105LanguageVersion = LanguageVersion.CSharp12, 5126LanguageVersion = LanguageVersion.CSharp12, 5147LanguageVersion = LanguageVersion.CSharp12, 5168LanguageVersion = LanguageVersion.CSharp12, 5188LanguageVersion = LanguageVersion.CSharp12, 5210LanguageVersion = LanguageVersion.CSharp12, 5231LanguageVersion = LanguageVersion.CSharp12, 5270LanguageVersion = LanguageVersion.CSharp12, 5291LanguageVersion = LanguageVersion.CSharp12, 5312LanguageVersion = LanguageVersion.CSharp12, 5347LanguageVersion = LanguageVersion.CSharp12, 5386LanguageVersion = LanguageVersion.CSharp12, 5426LanguageVersion = LanguageVersion.CSharp13, 5466LanguageVersion = LanguageVersion.CSharp12,

83LanguageVersion = LanguageVersion.CSharp11, 104LanguageVersion = LanguageVersion.CSharp12, 136LanguageVersion = LanguageVersion.CSharp12, 168LanguageVersion = LanguageVersion.CSharp12, 190LanguageVersion = LanguageVersion.CSharp12, 226LanguageVersion = LanguageVersion.CSharp12, 262LanguageVersion = LanguageVersion.CSharp12, 298LanguageVersion = LanguageVersion.CSharp12, 334LanguageVersion = LanguageVersion.CSharp12, 358LanguageVersion = LanguageVersion.CSharp12, 380LanguageVersion = LanguageVersion.CSharp12, 419LanguageVersion = LanguageVersion.CSharp12, 460LanguageVersion = LanguageVersion.CSharp12, 488LanguageVersion = LanguageVersion.CSharp12, 516LanguageVersion = LanguageVersion.CSharp12, 561LanguageVersion = LanguageVersion.CSharp12, 606LanguageVersion = LanguageVersion.CSharp12, 651LanguageVersion = LanguageVersion.CSharp12, 689LanguageVersion = LanguageVersion.CSharp12, 729LanguageVersion = LanguageVersion.CSharp12, 769LanguageVersion = LanguageVersion.CSharp12, 813LanguageVersion = LanguageVersion.CSharp12, 849LanguageVersion = LanguageVersion.CSharp12, 885LanguageVersion = LanguageVersion.CSharp12, 921LanguageVersion = LanguageVersion.CSharp12, 944LanguageVersion = LanguageVersion.CSharp12, 981LanguageVersion = LanguageVersion.CSharp12, 1017LanguageVersion = LanguageVersion.CSharp12, 1053LanguageVersion = LanguageVersion.CSharp12, 1089LanguageVersion = LanguageVersion.CSharp12, 1125LanguageVersion = LanguageVersion.CSharp12, 1149LanguageVersion = LanguageVersion.CSharp12, 1173LanguageVersion = LanguageVersion.CSharp12, 1211LanguageVersion = LanguageVersion.CSharp12, 1248LanguageVersion = LanguageVersion.CSharp12, 1289LanguageVersion = LanguageVersion.CSharp12, 1310LanguageVersion = LanguageVersion.CSharp12, 1330LanguageVersion = LanguageVersion.CSharp12, 1365LanguageVersion = LanguageVersion.CSharp12, 1403LanguageVersion = LanguageVersion.CSharp12, 1440LanguageVersion = LanguageVersion.CSharp12, 1476LanguageVersion = LanguageVersion.CSharp12, 1499LanguageVersion = LanguageVersion.CSharp12, 1538LanguageVersion = LanguageVersion.CSharp12,

75LanguageVersion = LanguageVersion.CSharp11, 95LanguageVersion = LanguageVersion.CSharp12, 115LanguageVersion = LanguageVersion.CSharp12, 141LanguageVersion = LanguageVersion.CSharp12, 160LanguageVersion = LanguageVersion.CSharp12, 180LanguageVersion = LanguageVersion.CSharp12, 200LanguageVersion = LanguageVersion.CSharp12, 220LanguageVersion = LanguageVersion.CSharp12, 240LanguageVersion = LanguageVersion.CSharp12, 260LanguageVersion = LanguageVersion.CSharp12, 274LanguageVersion = LanguageVersion.CSharp12, 294LanguageVersion = LanguageVersion.CSharp12, 314LanguageVersion = LanguageVersion.CSharp12, 334LanguageVersion = LanguageVersion.CSharp12, 348LanguageVersion = LanguageVersion.CSharp12, 362LanguageVersion = LanguageVersion.CSharp12, 382LanguageVersion = LanguageVersion.CSharp12, 402LanguageVersion = LanguageVersion.CSharp12, 422LanguageVersion = LanguageVersion.CSharp12, 436LanguageVersion = LanguageVersion.CSharp12, 466LanguageVersion = LanguageVersion.CSharp12, 486LanguageVersion = LanguageVersion.CSharp12, 506LanguageVersion = LanguageVersion.CSharp12, 526LanguageVersion = LanguageVersion.CSharp12, 546LanguageVersion = LanguageVersion.CSharp12, 562LanguageVersion = LanguageVersion.CSharp12, 578LanguageVersion = LanguageVersion.CSharp12, 602LanguageVersion = LanguageVersion.CSharp12, 626LanguageVersion = LanguageVersion.CSharp12, 650LanguageVersion = LanguageVersion.CSharp12, 674LanguageVersion = LanguageVersion.CSharp12, 698LanguageVersion = LanguageVersion.CSharp12, 722LanguageVersion = LanguageVersion.CSharp12, 739LanguageVersion = LanguageVersion.CSharp12, 759LanguageVersion = LanguageVersion.CSharp12, 781LanguageVersion = LanguageVersion.CSharp12, 810LanguageVersion = LanguageVersion.CSharp12, 830LanguageVersion = LanguageVersion.CSharp12, 862LanguageVersion = LanguageVersion.CSharp12, 882LanguageVersion = LanguageVersion.CSharp12, 914LanguageVersion = LanguageVersion.CSharp12, 928LanguageVersion = LanguageVersion.CSharp12, 954LanguageVersion = LanguageVersion.CSharp12, 990LanguageVersion = LanguageVersion.CSharp12, 1025LanguageVersion = LanguageVersion.CSharp12, 1064LanguageVersion = LanguageVersion.CSharp12, 1087LanguageVersion = LanguageVersion.CSharp12, 1110LanguageVersion = LanguageVersion.CSharp12, 1142LanguageVersion = LanguageVersion.CSharp12, 1166LanguageVersion = LanguageVersion.CSharp12, 1182LanguageVersion = LanguageVersion.CSharp12, 1220LanguageVersion = LanguageVersion.CSharp12,

49LanguageVersion = LanguageVersion.CSharp12, 78LanguageVersion = LanguageVersion.CSharp12, 107LanguageVersion = LanguageVersion.CSharp12, 134LanguageVersion = LanguageVersion.CSharp12, 151LanguageVersion = LanguageVersion.CSharp12, 186LanguageVersion = LanguageVersion.CSharp12, 205LanguageVersion = LanguageVersion.CSharp12, 238LanguageVersion = LanguageVersion.CSharp12, 269LanguageVersion = LanguageVersion.CSharp12, 300LanguageVersion = LanguageVersion.CSharp12, 331LanguageVersion = LanguageVersion.CSharp12, 362LanguageVersion = LanguageVersion.CSharp12, 391LanguageVersion = LanguageVersion.CSharp12, 410LanguageVersion = LanguageVersion.CSharp12, 441LanguageVersion = LanguageVersion.CSharp12, 464LanguageVersion = LanguageVersion.CSharp12, 519LanguageVersion = LanguageVersion.CSharp12, 585LanguageVersion = LanguageVersion.CSharp12, 651LanguageVersion = LanguageVersion.CSharp12, 681LanguageVersion = LanguageVersion.CSharp12, 700LanguageVersion = LanguageVersion.CSharp12, 732LanguageVersion = LanguageVersion.CSharp12, 752LanguageVersion = LanguageVersion.CSharp12, 784LanguageVersion = LanguageVersion.CSharp12, 815LanguageVersion = LanguageVersion.CSharp12, 848LanguageVersion = LanguageVersion.CSharp12, 898LanguageVersion = LanguageVersion.CSharp12, 936LanguageVersion = LanguageVersion.CSharp12, 988LanguageVersion = LanguageVersion.CSharp12, 1041LanguageVersion = LanguageVersion.CSharp12, 1096LanguageVersion = LanguageVersion.CSharp12, 1134LanguageVersion = LanguageVersion.CSharp12, 1191LanguageVersion = LanguageVersion.CSharp12, 1214LanguageVersion = LanguageVersion.CSharp12, 1232LanguageVersion = LanguageVersion.CSharp12, 1257LanguageVersion = LanguageVersion.CSharp12, 1292LanguageVersion = LanguageVersion.CSharp12, 1320LanguageVersion = LanguageVersion.CSharp12, 1348LanguageVersion = LanguageVersion.CSharp12, 1376LanguageVersion = LanguageVersion.CSharp12, 1404LanguageVersion = LanguageVersion.CSharp12, 1438LanguageVersion = LanguageVersion.CSharp12, 1476LanguageVersion = LanguageVersion.CSharp12, 1512LanguageVersion = LanguageVersion.CSharp12, 1533LanguageVersion = LanguageVersion.CSharp12, 1554LanguageVersion = LanguageVersion.CSharp12, 1589LanguageVersion = LanguageVersion.CSharp12, 1612LanguageVersion = LanguageVersion.CSharp12, 1632LanguageVersion = LanguageVersion.CSharp12,

38LanguageVersion = LanguageVersion.CSharp11, 70LanguageVersion = LanguageVersion.CSharp12, 102LanguageVersion = LanguageVersion.CSharp12, 134LanguageVersion = LanguageVersion.CSharp12, 155LanguageVersion = LanguageVersion.CSharp12, 187LanguageVersion = LanguageVersion.CSharp12, 219LanguageVersion = LanguageVersion.CSharp12, 239LanguageVersion = LanguageVersion.CSharp12, 273LanguageVersion = LanguageVersion.CSharp12, 307LanguageVersion = LanguageVersion.CSharp12, 341LanguageVersion = LanguageVersion.CSharp12, 375LanguageVersion = LanguageVersion.CSharp12, 409LanguageVersion = LanguageVersion.CSharp12, 443LanguageVersion = LanguageVersion.CSharp12, 477LanguageVersion = LanguageVersion.CSharp12, 511LanguageVersion = LanguageVersion.CSharp12, 545LanguageVersion = LanguageVersion.CSharp12, 579LanguageVersion = LanguageVersion.CSharp12, 613LanguageVersion = LanguageVersion.CSharp12, 647LanguageVersion = LanguageVersion.CSharp12, 668LanguageVersion = LanguageVersion.CSharp12, 689LanguageVersion = LanguageVersion.CSharp12, 710LanguageVersion = LanguageVersion.CSharp12, 748LanguageVersion = LanguageVersion.CSharp12, 782LanguageVersion = LanguageVersion.CSharp12, 803LanguageVersion = LanguageVersion.CSharp12, 846LanguageVersion = LanguageVersion.CSharp12, 881LanguageVersion = LanguageVersion.CSharp12, 902LanguageVersion = LanguageVersion.CSharp12, 936LanguageVersion = LanguageVersion.CSharp12, 970LanguageVersion = LanguageVersion.CSharp12, 1010LanguageVersion = LanguageVersion.CSharp12, 1055LanguageVersion = LanguageVersion.CSharp12, 1095LanguageVersion = LanguageVersion.CSharp12, 1140LanguageVersion = LanguageVersion.CSharp12, 1164LanguageVersion = LanguageVersion.CSharp12, 1188LanguageVersion = LanguageVersion.CSharp12, 1212LanguageVersion = LanguageVersion.CSharp12, 1235LanguageVersion = LanguageVersion.CSharp12, 1258LanguageVersion = LanguageVersion.CSharp12, 1292LanguageVersion = LanguageVersion.CSharp12, 1326LanguageVersion = LanguageVersion.CSharp12, 1360LanguageVersion = LanguageVersion.CSharp12, 1396LanguageVersion = LanguageVersion.CSharp12, 1432LanguageVersion = LanguageVersion.CSharp12, 1454LanguageVersion = LanguageVersion.CSharp12, 1479LanguageVersion = LanguageVersion.CSharp12, 1515LanguageVersion = LanguageVersion.CSharp12, 1551LanguageVersion = LanguageVersion.CSharp12, 1587LanguageVersion = LanguageVersion.CSharp12, 1629LanguageVersion = LanguageVersion.CSharp12, 1671LanguageVersion = LanguageVersion.CSharp12, 1707LanguageVersion = LanguageVersion.CSharp12, 1743LanguageVersion = LanguageVersion.CSharp12, 1787LanguageVersion = LanguageVersion.CSharp12, 1830LanguageVersion = LanguageVersion.CSharp12, 1862LanguageVersion = LanguageVersion.CSharp12, 1882LanguageVersion = LanguageVersion.CSharp12, 1916LanguageVersion = LanguageVersion.CSharp12, 1962LanguageVersion = LanguageVersion.CSharp12, 1995LanguageVersion = LanguageVersion.CSharp12, 2028LanguageVersion = LanguageVersion.CSharp12, 2060LanguageVersion = LanguageVersion.CSharp12, 2081LanguageVersion = LanguageVersion.CSharp12, 2115LanguageVersion = LanguageVersion.CSharp12, 2136LanguageVersion = LanguageVersion.CSharp12, 2170LanguageVersion = LanguageVersion.CSharp12, 2191LanguageVersion = LanguageVersion.CSharp12, 2225LanguageVersion = LanguageVersion.CSharp12, 2261LanguageVersion = LanguageVersion.CSharp12, 2293LanguageVersion = LanguageVersion.CSharp12, 2325LanguageVersion = LanguageVersion.CSharp12, 2358LanguageVersion = LanguageVersion.CSharp12, 2391LanguageVersion = LanguageVersion.CSharp12, 2426LanguageVersion = LanguageVersion.CSharp12, 2461LanguageVersion = LanguageVersion.CSharp12, 2499LanguageVersion = LanguageVersion.CSharp12, 2521LanguageVersion = LanguageVersion.CSharp12, 2543LanguageVersion = LanguageVersion.CSharp12, 2569LanguageVersion = LanguageVersion.CSharp12, 2618LanguageVersion = LanguageVersion.CSharp12, 2649LanguageVersion = LanguageVersion.CSharp12, 2669LanguageVersion = LanguageVersion.CSharp12, 2707LanguageVersion = LanguageVersion.CSharp12, 2741LanguageVersion = LanguageVersion.CSharp12, 2766LanguageVersion = LanguageVersion.CSharp12, 2807LanguageVersion = LanguageVersion.CSharp12, 2839LanguageVersion = LanguageVersion.CSharp12, 2871LanguageVersion = LanguageVersion.CSharp12, 2903LanguageVersion = LanguageVersion.CSharp12, 2935LanguageVersion = LanguageVersion.CSharp12, 2969LanguageVersion = LanguageVersion.CSharp12,

54LanguageVersion = LanguageVersion.CSharp12, 90LanguageVersion = LanguageVersion.CSharp12, 111LanguageVersion = LanguageVersion.CSharp12, 129LanguageVersion = LanguageVersion.CSharp12,

36LanguageVersion = LanguageVersion.CSharp11, 55LanguageVersion = LanguageVersion.CSharp11, 74LanguageVersion = LanguageVersion.CSharp12, 93LanguageVersion = LanguageVersion.CSharp12, 123LanguageVersion = LanguageVersion.CSharp12, 153LanguageVersion = LanguageVersion.CSharp12, 183LanguageVersion = LanguageVersion.CSharp12, 213LanguageVersion = LanguageVersion.CSharp12, 232LanguageVersion = LanguageVersion.CSharp12, 251LanguageVersion = LanguageVersion.CSharp12, 270LanguageVersion = LanguageVersion.CSharp12, 289LanguageVersion = LanguageVersion.CSharp12, 321LanguageVersion = LanguageVersion.CSharp12, 340LanguageVersion = LanguageVersion.CSharp12, 359LanguageVersion = LanguageVersion.CSharp12, 378LanguageVersion = LanguageVersion.CSharp12, 397LanguageVersion = LanguageVersion.CSharp12, 431LanguageVersion = LanguageVersion.CSharp12, 465LanguageVersion = LanguageVersion.CSharp12, 495LanguageVersion = LanguageVersion.CSharp12, 525LanguageVersion = LanguageVersion.CSharp12, 545LanguageVersion = LanguageVersion.CSharp12, 575LanguageVersion = LanguageVersion.CSharp12, 594LanguageVersion = LanguageVersion.CSharp12, 624LanguageVersion = LanguageVersion.CSharp12, 643LanguageVersion = LanguageVersion.CSharp12, 663LanguageVersion = LanguageVersion.CSharp12, 685LanguageVersion = LanguageVersion.CSharp12, 705LanguageVersion = LanguageVersion.CSharp12, 725LanguageVersion = LanguageVersion.CSharp12, 747LanguageVersion = LanguageVersion.CSharp12, 769LanguageVersion = LanguageVersion.CSharp12, 789LanguageVersion = LanguageVersion.CSharp12, 809LanguageVersion = LanguageVersion.CSharp12, 830LanguageVersion = LanguageVersion.CSharp12, 861LanguageVersion = LanguageVersion.CSharp12, 894LanguageVersion = LanguageVersion.CSharp12, 926LanguageVersion = LanguageVersion.CSharp12, 960LanguageVersion = LanguageVersion.CSharp12, 981LanguageVersion = LanguageVersion.CSharp12, 1003LanguageVersion = LanguageVersion.CSharp12, 1027LanguageVersion = LanguageVersion.CSharp12, 1065LanguageVersion = LanguageVersion.CSharp12, 1103LanguageVersion = LanguageVersion.CSharp12, 1139LanguageVersion = LanguageVersion.CSharp12, 1177LanguageVersion = LanguageVersion.CSharp12, 1211LanguageVersion = LanguageVersion.CSharp12, 1247LanguageVersion = LanguageVersion.CSharp12, 1283LanguageVersion = LanguageVersion.CSharp12, 1321LanguageVersion = LanguageVersion.CSharp12, 1355LanguageVersion = LanguageVersion.CSharp12, 1391LanguageVersion = LanguageVersion.CSharp12, 1427LanguageVersion = LanguageVersion.CSharp12, 1467LanguageVersion = LanguageVersion.CSharp12, 1485LanguageVersion = LanguageVersion.CSharp12, 1519LanguageVersion = LanguageVersion.CSharp12,

27LanguageVersion languageVersion = LanguageVersion.CSharp11) 41private static async Task TestMissingInRegularAndScriptAsync(string testCode, LanguageVersion? languageVersion = null) 325""", LanguageVersion.CSharp5); 571""", LanguageVersion.CSharp2); 1580""", OutputKind.ConsoleApplication, LanguageVersion.CSharp12); 1610""", languageVersion: LanguageVersion.CSharp12); 1642LanguageVersion = LanguageVersion.CSharp12, 1677LanguageVersion = LanguageVersion.CSharp12, 1716LanguageVersion = LanguageVersion.CSharp12, 1751LanguageVersion = LanguageVersion.CSharp13,

30LanguageVersion = LanguageVersion.CSharp12, 348LanguageVersion = LanguageVersion.CSharp12, 747LanguageVersion = LanguageVersion.CSharp12, 770LanguageVersion = LanguageVersion.CSharp12, 1824LanguageVersion = LanguageVersion.CSharp12, 4124LanguageVersion = LanguageVersion.CSharp12, 5023LanguageVersion = LanguageVersion.CSharp12, 5061LanguageVersion = LanguageVersion.CSharp12, 5096LanguageVersion = LanguageVersion.CSharp12, 5128LanguageVersion = LanguageVersion.CSharp12, 5160LanguageVersion = LanguageVersion.CSharp12, 5192LanguageVersion = LanguageVersion.CSharp12, 5234LanguageVersion = LanguageVersion.CSharp12, 5266LanguageVersion = LanguageVersion.CSharp12, 5298LanguageVersion = LanguageVersion.CSharp12, 5340LanguageVersion = LanguageVersion.CSharp12, 5362LanguageVersion = LanguageVersion.CSharp12, 5398LanguageVersion = LanguageVersion.CSharp12, 5430LanguageVersion = LanguageVersion.CSharp12, 5462LanguageVersion = LanguageVersion.CSharp12, 5514LanguageVersion = LanguageVersion.CSharp12, 5534LanguageVersion = LanguageVersion.CSharp13, 5553LanguageVersion = LanguageVersion.CSharp13, 5583LanguageVersion = LanguageVersion.CSharp13, 5604LanguageVersion = LanguageVersion.CSharp12, 5623LanguageVersion = LanguageVersion.CSharp12, 5647LanguageVersion = LanguageVersion.CSharp12, 5708LanguageVersion = LanguageVersion.CSharp12,

245LanguageVersion = LanguageVersion.CSharp8 261LanguageVersion = LanguageVersion.CSharp7_3 278LanguageVersion = LanguageVersion.CSharp8 892LanguageVersion = LanguageVersion.CSharp9, 1500LanguageVersion = LanguageVersion.Preview,

29private static Task TestMissingAsync(string testCode, LanguageVersion languageVersion = LanguageVersion.CSharp8) 64""", LanguageVersion.CSharp7_3); 268""", LanguageVersion.CSharp7_3); 869""", LanguageVersion.CSharp12); 887""", LanguageVersion.CSharp12); 908""", LanguageVersion.CSharp12); 947LanguageVersion = LanguageVersion.Preview,

28LanguageVersion languageVersion = LanguageVersion.CSharp8, 44LanguageVersion languageVersion = LanguageVersion.CSharp8, 188""", LanguageVersion.CSharp6); 554""", LanguageVersion.Latest); 926""", LanguageVersion.CSharp8, PreferImplicitTypeAlways); 956""", LanguageVersion.CSharp9, options: PreferImplicitTypeAlways); 1106""", LanguageVersion.CSharp8, PreferImplicitTypeAlways); 1136""", LanguageVersion.CSharp9, options: PreferImplicitTypeAlways); 1788""", LanguageVersion.CSharp9); 1832""", LanguageVersion.CSharp9, equivalenceKey: nameof(AnalyzersResources.Simplify_check)); 2012LanguageVersion = LanguageVersion.CSharp9, 2055""", LanguageVersion.CSharp9); 2089""", LanguageVersion.CSharp13); 2161""", LanguageVersion.CSharp9);

22private static readonly ParseOptions CSharp8 = CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp8); 23private static readonly ParseOptions CSharp9 = CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9); 154""", parameters: new TestParameters(parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp6))); 909[InlineData(LanguageVersion.CSharp8, "(string)null")] 910[InlineData(LanguageVersion.CSharp9, "null")] 911public Task TestConversion2_Throw1(LanguageVersion languageVersion, string expectedFalseExpression) 971[InlineData(LanguageVersion.CSharp8, "(string)null")] 972[InlineData(LanguageVersion.CSharp9, "null")] 973public Task TestConversion3(LanguageVersion languageVersion, string expectedFalseExpression) 1004[InlineData(LanguageVersion.CSharp8, "(string)null")] 1005[InlineData(LanguageVersion.CSharp9, "null")] 1006public Task TestConversion3_Throw1(LanguageVersion languageVersion, string expectedFalseExpression) 1037[InlineData(LanguageVersion.CSharp8, "(string)null")] 1038[InlineData(LanguageVersion.CSharp9, "null")] 1039public Task TestConversion3_Throw2(LanguageVersion languageVersion, string expectedTrue)

514LanguageVersion = LanguageVersion.CSharp7_1 834LanguageVersion = LanguageVersion.CSharp9 867LanguageVersion = LanguageVersion.CSharp9

34LanguageVersion = LanguageVersion.CSharp7 57LanguageVersion = LanguageVersion.CSharp7_1 82LanguageVersion = LanguageVersion.CSharp7_1 107LanguageVersion = LanguageVersion.CSharp7_1 123LanguageVersion = LanguageVersion.CSharp7_1 152LanguageVersion = LanguageVersion.CSharp7_1 170LanguageVersion = LanguageVersion.CSharp7_1 195LanguageVersion = LanguageVersion.CSharp7_1 211LanguageVersion = LanguageVersion.CSharp7_1 227LanguageVersion = LanguageVersion.CSharp7_1 256LanguageVersion = LanguageVersion.CSharp7_1 275LanguageVersion = LanguageVersion.CSharp7_1 300LanguageVersion = LanguageVersion.CSharp7_1, 327LanguageVersion = LanguageVersion.CSharp7_1, 356LanguageVersion = LanguageVersion.CSharp7_1 381LanguageVersion = LanguageVersion.CSharp7_1 408LanguageVersion = LanguageVersion.CSharp7_1 430LanguageVersion = LanguageVersion.CSharp7_1 452LanguageVersion = LanguageVersion.CSharp7_1 483LanguageVersion = LanguageVersion.CSharp7_1 502LanguageVersion = LanguageVersion.CSharp7_1 521LanguageVersion = LanguageVersion.CSharp7_1 552LanguageVersion = LanguageVersion.CSharp7_1 571LanguageVersion = LanguageVersion.CSharp7_1 590LanguageVersion = LanguageVersion.CSharp7_1 621LanguageVersion = LanguageVersion.CSharp7_1 652LanguageVersion = LanguageVersion.CSharp7_1 668LanguageVersion = LanguageVersion.CSharp7_1 684LanguageVersion = LanguageVersion.CSharp7_1 709LanguageVersion = LanguageVersion.CSharp7_1

56LanguageVersion = LanguageVersion.CSharp13, 94LanguageVersion = LanguageVersion.CSharp13, 117LanguageVersion = LanguageVersion.CSharp13, 140LanguageVersion = LanguageVersion.CSharp13, 163LanguageVersion = LanguageVersion.CSharp13, 201LanguageVersion = LanguageVersion.CSharp13, 239LanguageVersion = LanguageVersion.CSharp13, 277LanguageVersion = LanguageVersion.CSharp13, 315LanguageVersion = LanguageVersion.CSharp13, 353LanguageVersion = LanguageVersion.CSharp13, 391LanguageVersion = LanguageVersion.CSharp13, 429LanguageVersion = LanguageVersion.CSharp13, 473LanguageVersion = LanguageVersion.CSharp13, 517LanguageVersion = LanguageVersion.CSharp13, 561LanguageVersion = LanguageVersion.CSharp13, 605LanguageVersion = LanguageVersion.CSharp13,

279LanguageVersion = LanguageVersion.CSharp11

29LanguageVersion version = LanguageVersion.CSharp8) 33ReferenceAssemblies = version == LanguageVersion.CSharp9 ? ReferenceAssemblies.Net.Net50 : ReferenceAssemblies.Default, 51LanguageVersion version = LanguageVersion.CSharp8) 54ReferenceAssemblies = version == LanguageVersion.CSharp9 ? ReferenceAssemblies.Net.Net50 : ReferenceAssemblies.Default, 69LanguageVersion version = LanguageVersion.CSharp8) 72ReferenceAssemblies = version == LanguageVersion.CSharp9 ? ReferenceAssemblies.Net.Net50 : ReferenceAssemblies.Default, 238""", LanguageVersion.CSharp9); 270LanguageVersion = LanguageVersion.CSharp9, 440""", LanguageVersion.CSharp9); 790LanguageVersion = LanguageVersion.CSharp9, 820""", LanguageVersion.CSharp6); 850""", LanguageVersion.CSharp6);

24private static Task TestWithUseExpressionBody(string code, string fixedCode, LanguageVersion version = LanguageVersion.CSharp8) 234""", LanguageVersion.CSharp6); 259""", LanguageVersion.CSharp6);

809LanguageVersion = LanguageVersion.CSharp9, 836LanguageVersion = LanguageVersion.CSharp9,

25private static Task TestWithUseExpressionBody(string code, string fixedCode, LanguageVersion version = LanguageVersion.CSharp8) 767""", LanguageVersion.CSharp5); 779await TestWithUseExpressionBody(code, code, LanguageVersion.CSharp6); 796""", LanguageVersion.CSharp6); 809await TestWithUseExpressionBody(code, code, LanguageVersion.CSharp6); 838""", LanguageVersion.CSharp6);

30LanguageVersion version = LanguageVersion.CSharp8) 477""", LanguageVersion.CSharp6); 508""", LanguageVersion.CSharp6);

22private static readonly LanguageVersion CSharp14 = LanguageVersionExtensions.CSharpNext; 305LanguageVersion = LanguageVersion.CSharp13,

28LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp8, 53LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 72LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 91LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 110LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 123LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 148LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 161LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 174LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 193LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 218LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 238LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 271LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 296LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 315LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 334LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 353LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 372LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 391LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 404LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 423LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 442LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 455LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 469LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 486LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 507LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 528LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 551LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 584LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 605LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 626LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 653LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 660LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 687LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 710LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 733LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 756LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 771LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 786LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 809LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 832LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 847LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 862LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 885LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9,

3165""", new(parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9), options: ImplicitTypeEverywhere()));

37LanguageVersion = LanguageVersion.CSharp7, 438LanguageVersion = LanguageVersion.CSharp8, 474LanguageVersion = LanguageVersion.CSharp8,

37LanguageVersion = LanguageVersion.CSharp7, 91LanguageVersion = LanguageVersion.CSharp8, 127LanguageVersion = LanguageVersion.CSharp8, 342LanguageVersion = LanguageVersion.CSharp7,

30CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.Latest); 82""", count: 0, parameters: new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp6))); 96""", count: 0, parameters: new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp7)));

48""", parameters: TestParameters.Default.WithParseOptions(new CSharpParseOptions(LanguageVersion.CSharp7_3))); 61""", parameters: TestParameters.Default.WithParseOptions(new CSharpParseOptions(LanguageVersion.CSharp7_3))); 83""", parameters: TestParameters.Default.WithParseOptions(new CSharpParseOptions(LanguageVersion.CSharp7_3))); 107""", parameters: TestParameters.Default.WithParseOptions(new CSharpParseOptions(LanguageVersion.CSharp7_3))); 120""", parameters: TestParameters.Default.WithParseOptions(new CSharpParseOptions(LanguageVersion.CSharp7_3))); 133""", parameters: TestParameters.Default.WithParseOptions(new CSharpParseOptions(LanguageVersion.CSharp8)));

90new TestParameters(parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp8))); 108new TestParameters(parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9))); 164""", new(parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp8))); 192""", new(parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9))); 220""", new(parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp8))); 248""", new(parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9))); 264""", parameters: new TestParameters(parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp6)));

26private static readonly ParseOptions CSharp7 = CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp7); 27private static readonly ParseOptions CSharp8 = CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp8); 28private static readonly ParseOptions CSharp9 = CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9); 94new TestParameters(parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp8))); 112new TestParameters(parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9))); 268""", parameters: new TestParameters(parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp6)));

20private static Task VerifyAsync(string source, string fixedSource, LanguageVersion languageVersion) 29=> await VerifyAsync(source, fixedSource, LanguageVersion.CSharp9); 32=> await VerifyAsync(source, fixedSource, LanguageVersion.CSharp8);

29private static readonly ParseOptions CSharp72ParseOptions = CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp7_2); 52""", parameters: new TestParameters(parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp6))); 3922new(parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp10))); 3936new TestParameters(parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9)));

29LanguageVersion languageVersion = LanguageVersion.CSharp9) 47LanguageVersion languageVersion = LanguageVersion.CSharp9) 283""", LanguageVersion.CSharp5); 299""", LanguageVersion.CSharp5);

25LanguageVersion? languageVersion = null) 73LanguageVersion = LanguageVersion.CSharp12, 165LanguageVersion = LanguageVersion.CSharp12, 223LanguageVersion = LanguageVersion.CSharp12, 280LanguageVersion = LanguageVersion.CSharp12, 320LanguageVersion = LanguageVersion.CSharp12, 362LanguageVersion = LanguageVersion.CSharp12, 404LanguageVersion = LanguageVersion.CSharp12, 445LanguageVersion = LanguageVersion.CSharp12, 489LanguageVersion = LanguageVersion.CSharp12, 535LanguageVersion = LanguageVersion.CSharp12, 553""", LanguageVersion.CSharp2); 609LanguageVersion = LanguageVersion.CSharp12, 660LanguageVersion = LanguageVersion.CSharp12, 712LanguageVersion = LanguageVersion.CSharp12, 752LanguageVersion = LanguageVersion.CSharp12, 799LanguageVersion = LanguageVersion.CSharp12, 889LanguageVersion = LanguageVersion.CSharp12, 937LanguageVersion = LanguageVersion.CSharp12, 1040LanguageVersion = LanguageVersion.CSharp12, 1098LanguageVersion = LanguageVersion.CSharp12, 1130LanguageVersion = LanguageVersion.CSharp12, 1211LanguageVersion = LanguageVersion.CSharp12, 1280LanguageVersion = LanguageVersion.CSharp12, 1322LanguageVersion = LanguageVersion.CSharp12, 1367LanguageVersion = LanguageVersion.CSharp12, 1408LanguageVersion = LanguageVersion.CSharp12, 1453LanguageVersion = LanguageVersion.CSharp12,

65LanguageVersion = LanguageVersion.CSharp7, 83LanguageVersion = LanguageVersion.CSharp7, 99LanguageVersion = LanguageVersion.CSharp7, 120LanguageVersion = LanguageVersion.CSharp7, 138LanguageVersion = LanguageVersion.CSharp8, 156LanguageVersion = LanguageVersion.CSharp9, 174LanguageVersion = LanguageVersion.CSharp8, 192LanguageVersion = LanguageVersion.CSharp9, 213LanguageVersion = LanguageVersion.CSharp9, 233LanguageVersion = LanguageVersion.CSharp8, 266LanguageVersion = LanguageVersion.CSharp9, 301LanguageVersion = LanguageVersion.CSharp10, 321LanguageVersion = LanguageVersion.CSharp8, 341LanguageVersion = LanguageVersion.CSharp8, 376LanguageVersion = LanguageVersion.CSharp10, 405LanguageVersion = LanguageVersion.CSharp9, 434LanguageVersion = LanguageVersion.CSharp9, 467LanguageVersion = LanguageVersion.CSharp9, 496LanguageVersion = LanguageVersion.CSharp9, 542LanguageVersion = LanguageVersion.CSharp9, 560LanguageVersion = LanguageVersion.CSharp9, 578LanguageVersion = LanguageVersion.CSharp9, 599LanguageVersion = LanguageVersion.CSharp9, 632LanguageVersion = LanguageVersion.CSharp9, 667LanguageVersion = LanguageVersion.CSharp10, 700LanguageVersion = LanguageVersion.CSharp9, 735LanguageVersion = LanguageVersion.CSharp10, 756LanguageVersion = LanguageVersion.CSharp9, 791LanguageVersion = LanguageVersion.CSharp10, 896LanguageVersion = LanguageVersion.CSharp9, 945LanguageVersion = LanguageVersion.CSharp9, 1036LanguageVersion = LanguageVersion.CSharp9, 1055LanguageVersion = LanguageVersion.CSharp9, 1126LanguageVersion = LanguageVersion.CSharp9,

42[InlineData("x == null", "o is not string x", LanguageVersion.CSharp9)] 43public async Task InlineTypeCheck1(string input, string output, LanguageVersion version = LanguageVersion.CSharp8) 59private Task TestStatement(string input, string output, LanguageVersion version = LanguageVersion.CSharp8) 95""", new TestParameters(parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp6))); 1083""", parameters: new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp8))); 1120""", parameters: new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp8))); 1366""", parameters: new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp8))); 1395""", parameters: new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp8))); 1446""", parameters: new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp8))); 1476""", parameters: new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp8))); 1533""", parameters: new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp8))); 1571""", parameters: new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp8)));

71""", new(parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp8))); 126""", new(parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9)));

74""", new TestParameters(parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp6)));

48LanguageVersion = LanguageVersion.CSharp9, 77LanguageVersion = LanguageVersion.CSharp9, 106LanguageVersion = LanguageVersion.CSharp9, 135LanguageVersion = LanguageVersion.CSharp9, 164LanguageVersion = LanguageVersion.CSharp9, 193LanguageVersion = LanguageVersion.CSharp9, 234LanguageVersion = LanguageVersion.CSharp9, 269LanguageVersion = LanguageVersion.CSharp9, 287LanguageVersion = LanguageVersion.CSharp8, 316LanguageVersion = LanguageVersion.CSharp9, 345LanguageVersion = LanguageVersion.CSharp9, 378LanguageVersion = LanguageVersion.CSharp9, 396LanguageVersion = LanguageVersion.CSharp9, 417LanguageVersion = LanguageVersion.CSharp9, 438LanguageVersion = LanguageVersion.CSharp9, 475LanguageVersion = LanguageVersion.CSharp9,

39LanguageVersion = LanguageVersion.CSharp12, 54LanguageVersion = LanguageVersion.CSharp11, 69LanguageVersion = LanguageVersion.CSharp12, 89LanguageVersion = LanguageVersion.CSharp12, 108LanguageVersion = LanguageVersion.CSharp12, 135LanguageVersion = LanguageVersion.CSharp12, 170LanguageVersion = LanguageVersion.CSharp12, 205LanguageVersion = LanguageVersion.CSharp12, 242LanguageVersion = LanguageVersion.CSharp12, 279LanguageVersion = LanguageVersion.CSharp12, 318LanguageVersion = LanguageVersion.CSharp12, 332LanguageVersion = LanguageVersion.CSharp12, 348LanguageVersion = LanguageVersion.CSharp12, 370LanguageVersion = LanguageVersion.CSharp12, 392LanguageVersion = LanguageVersion.CSharp12, 414LanguageVersion = LanguageVersion.CSharp12, 436LanguageVersion = LanguageVersion.CSharp12, 455LanguageVersion = LanguageVersion.CSharp12, 474LanguageVersion = LanguageVersion.CSharp12, 490LanguageVersion = LanguageVersion.CSharp12, 509LanguageVersion = LanguageVersion.CSharp12, 531LanguageVersion = LanguageVersion.CSharp12, 558LanguageVersion = LanguageVersion.CSharp12, 583LanguageVersion = LanguageVersion.CSharp12, 609LanguageVersion = LanguageVersion.CSharp12, 635LanguageVersion = LanguageVersion.CSharp12, 662LanguageVersion = LanguageVersion.CSharp12, 683LanguageVersion = LanguageVersion.CSharp12, 736LanguageVersion = LanguageVersion.CSharp12, 773LanguageVersion = LanguageVersion.CSharp12, 810LanguageVersion = LanguageVersion.CSharp12, 847LanguageVersion = LanguageVersion.CSharp12, 886LanguageVersion = LanguageVersion.CSharp12, 927LanguageVersion = LanguageVersion.CSharp12, 968LanguageVersion = LanguageVersion.CSharp12, 988LanguageVersion = LanguageVersion.CSharp12, 1008LanguageVersion = LanguageVersion.CSharp12, 1036LanguageVersion = LanguageVersion.CSharp12, 1070LanguageVersion = LanguageVersion.CSharp12, 1108LanguageVersion = LanguageVersion.CSharp12, 1136LanguageVersion = LanguageVersion.CSharp12, 1182LanguageVersion = LanguageVersion.CSharp12, 1224LanguageVersion = LanguageVersion.CSharp12, 1262LanguageVersion = LanguageVersion.CSharp12, 1309LanguageVersion = LanguageVersion.CSharp12, 1354LanguageVersion = LanguageVersion.CSharp12, 1394LanguageVersion = LanguageVersion.CSharp12, 1434LanguageVersion = LanguageVersion.CSharp12, 1480LanguageVersion = LanguageVersion.CSharp12, 1526LanguageVersion = LanguageVersion.CSharp12, 1571LanguageVersion = LanguageVersion.CSharp12, 1618LanguageVersion = LanguageVersion.CSharp12, 1649LanguageVersion = LanguageVersion.CSharp12, 1679LanguageVersion = LanguageVersion.CSharp12, 1718LanguageVersion = LanguageVersion.CSharp12, 1775LanguageVersion = LanguageVersion.CSharp12, 1801LanguageVersion = LanguageVersion.CSharp12, 1827LanguageVersion = LanguageVersion.CSharp12, 1859LanguageVersion = LanguageVersion.CSharp12, 1893LanguageVersion = LanguageVersion.CSharp12, 1928LanguageVersion = LanguageVersion.CSharp12, 1965LanguageVersion = LanguageVersion.CSharp12, 1995LanguageVersion = LanguageVersion.CSharp12, 2028LanguageVersion = LanguageVersion.CSharp12, 2054LanguageVersion = LanguageVersion.CSharp12, 2086LanguageVersion = LanguageVersion.CSharp12, 2114LanguageVersion = LanguageVersion.CSharp12, 2148LanguageVersion = LanguageVersion.CSharp12, 2174LanguageVersion = LanguageVersion.CSharp12, 2206LanguageVersion = LanguageVersion.CSharp12, 2234LanguageVersion = LanguageVersion.CSharp12, 2268LanguageVersion = LanguageVersion.CSharp12, 2295LanguageVersion = LanguageVersion.CSharp12, 2326LanguageVersion = LanguageVersion.CSharp12, 2353LanguageVersion = LanguageVersion.CSharp12, 2384LanguageVersion = LanguageVersion.CSharp12, 2412LanguageVersion = LanguageVersion.CSharp12, 2431LanguageVersion = LanguageVersion.CSharp12, 2455LanguageVersion = LanguageVersion.CSharp12, 2479LanguageVersion = LanguageVersion.CSharp12, 2499LanguageVersion = LanguageVersion.CSharp12, 2519LanguageVersion = LanguageVersion.CSharp12, 2541LanguageVersion = LanguageVersion.CSharp12, 2563LanguageVersion = LanguageVersion.CSharp12, 2585LanguageVersion = LanguageVersion.CSharp12, 2607LanguageVersion = LanguageVersion.CSharp12, 2631LanguageVersion = LanguageVersion.CSharp12, 2655LanguageVersion = LanguageVersion.CSharp12, 2686LanguageVersion = LanguageVersion.CSharp12, 2725LanguageVersion = LanguageVersion.CSharp12, 2755LanguageVersion = LanguageVersion.CSharp12, 2785LanguageVersion = LanguageVersion.CSharp12, 2811LanguageVersion = LanguageVersion.CSharp12, 2837LanguageVersion = LanguageVersion.CSharp12, 2863LanguageVersion = LanguageVersion.CSharp12, 2938LanguageVersion = LanguageVersion.CSharp12, 2974LanguageVersion = LanguageVersion.CSharp12, 3017LanguageVersion = LanguageVersion.CSharp12, 3053LanguageVersion = LanguageVersion.CSharp12, 3093LanguageVersion = LanguageVersion.CSharp12, 3120LanguageVersion = LanguageVersion.CSharp12, 3140LanguageVersion = LanguageVersion.CSharp12, 3165LanguageVersion = LanguageVersion.CSharp12, 3184LanguageVersion = LanguageVersion.CSharp12, 3211LanguageVersion = LanguageVersion.CSharp12, 3231LanguageVersion = LanguageVersion.CSharp12, 3255LanguageVersion = LanguageVersion.CSharp12, 3282LanguageVersion = LanguageVersion.CSharp12, 3309LanguageVersion = LanguageVersion.CSharp12, 3336LanguageVersion = LanguageVersion.CSharp12, 3363LanguageVersion = LanguageVersion.CSharp12, 3383LanguageVersion = LanguageVersion.CSharp12, 3403LanguageVersion = LanguageVersion.CSharp12, 3418LanguageVersion = LanguageVersion.CSharp12, 3463LanguageVersion = LanguageVersion.CSharp12, 3497LanguageVersion = LanguageVersion.CSharp12, 3532LanguageVersion = LanguageVersion.CSharp12, 3556LanguageVersion = LanguageVersion.CSharp12, 3576LanguageVersion = LanguageVersion.CSharp12, 3600LanguageVersion = LanguageVersion.CSharp12, 3628LanguageVersion = LanguageVersion.CSharp12, 3669LanguageVersion = LanguageVersion.CSharp12, 3710LanguageVersion = LanguageVersion.CSharp12, 3751LanguageVersion = LanguageVersion.CSharp12, 3778LanguageVersion = LanguageVersion.CSharp12, 3819LanguageVersion = LanguageVersion.CSharp12, 3846LanguageVersion = LanguageVersion.CSharp12, 3870LanguageVersion = LanguageVersion.CSharp12, 3901LanguageVersion = LanguageVersion.CSharp12, 3928LanguageVersion = LanguageVersion.CSharp12, 3958LanguageVersion = LanguageVersion.CSharp12, 3985LanguageVersion = LanguageVersion.CSharp12, 4014LanguageVersion = LanguageVersion.CSharp12, 4040LanguageVersion = LanguageVersion.CSharp12, 4071LanguageVersion = LanguageVersion.CSharp12, 4099LanguageVersion = LanguageVersion.CSharp12, 4131LanguageVersion = LanguageVersion.CSharp12, 4160LanguageVersion = LanguageVersion.CSharp12, 4190LanguageVersion = LanguageVersion.CSharp12, 4223LanguageVersion = LanguageVersion.CSharp12,

133LanguageVersion = LanguageVersion.CSharp7_2 1826LanguageVersion = LanguageVersion.CSharp9, 1859LanguageVersion = LanguageVersion.CSharp9, 1883LanguageVersion = LanguageVersion.CSharp9, 1920LanguageVersion = LanguageVersion.CSharp9, 1953LanguageVersion = LanguageVersion.CSharp9, 1988LanguageVersion = LanguageVersion.CSharp9,

63LanguageVersion = LanguageVersion.CSharp13, 84LanguageVersion = LanguageVersion.CSharp12, 105LanguageVersion = LanguageVersion.CSharp12, 126LanguageVersion = LanguageVersion.CSharp12, 162LanguageVersion = LanguageVersion.CSharp13, 198LanguageVersion = LanguageVersion.CSharp13, 219LanguageVersion = LanguageVersion.CSharp13, 240LanguageVersion = LanguageVersion.CSharp13, 263LanguageVersion = LanguageVersion.CSharp13, 284LanguageVersion = LanguageVersion.CSharp13, 322LanguageVersion = LanguageVersion.CSharp13, 358LanguageVersion = LanguageVersion.CSharp13, 397LanguageVersion = LanguageVersion.CSharp13, 433LanguageVersion = LanguageVersion.CSharp13, 457LanguageVersion = LanguageVersion.CSharp13, 500LanguageVersion = LanguageVersion.CSharp13, 551LanguageVersion = LanguageVersion.CSharp13, 569LanguageVersion = LanguageVersion.CSharp13, 594LanguageVersion = LanguageVersion.CSharp13, 617LanguageVersion = LanguageVersion.CSharp13, 638LanguageVersion = LanguageVersion.CSharp13, 659LanguageVersion = LanguageVersion.CSharp13, 680LanguageVersion = LanguageVersion.CSharp13, 706LanguageVersion = LanguageVersion.CSharp13, 732LanguageVersion = LanguageVersion.CSharp13, 753LanguageVersion = LanguageVersion.CSharp13, 774LanguageVersion = LanguageVersion.CSharp13, 818LanguageVersion = LanguageVersion.CSharp13, 864LanguageVersion = LanguageVersion.CSharp13, 900LanguageVersion = LanguageVersion.CSharp13, 936LanguageVersion = LanguageVersion.CSharp13, 972LanguageVersion = LanguageVersion.CSharp13, 1008LanguageVersion = LanguageVersion.CSharp13, 1054LanguageVersion = LanguageVersion.CSharp13, 1100LanguageVersion = LanguageVersion.CSharp13, 1146LanguageVersion = LanguageVersion.CSharp13, 1192LanguageVersion = LanguageVersion.CSharp13, 1246LanguageVersion = LanguageVersion.CSharp13, 1300LanguageVersion = LanguageVersion.CSharp13, 1338LanguageVersion = LanguageVersion.CSharp13, 1357LanguageVersion = LanguageVersion.CSharp13, 1395LanguageVersion = LanguageVersion.CSharp13, 1439LanguageVersion = LanguageVersion.CSharp13, 1481LanguageVersion = LanguageVersion.CSharp13, 1523LanguageVersion = LanguageVersion.CSharp13,

139""", new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp6))); 570""", new(TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9))); 604""", new(TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9))); 639""", new(TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9)));

39LanguageVersion = LanguageVersion.CSharp6, 387LanguageVersion = LanguageVersion.CSharp9,

85LanguageVersion = LanguageVersion.CSharp13,

44LanguageVersion = LanguageVersion.CSharp12 61LanguageVersion = LanguageVersion.CSharp10 79LanguageVersion = LanguageVersion.CSharp12 97LanguageVersion = LanguageVersion.CSharp12 122LanguageVersion = LanguageVersion.CSharp12 140LanguageVersion = LanguageVersion.CSharp12 162LanguageVersion = LanguageVersion.CSharp12 182LanguageVersion = LanguageVersion.CSharp12 200LanguageVersion = LanguageVersion.CSharp12 229LanguageVersion = LanguageVersion.CSharp12 260LanguageVersion = LanguageVersion.CSharp12 289LanguageVersion = LanguageVersion.CSharp12 318LanguageVersion = LanguageVersion.CSharp12 347LanguageVersion = LanguageVersion.CSharp12 376LanguageVersion = LanguageVersion.CSharp12 404LanguageVersion = LanguageVersion.CSharp12 433LanguageVersion = LanguageVersion.CSharp12 462LanguageVersion = LanguageVersion.CSharp12 495LanguageVersion = LanguageVersion.CSharp12 524LanguageVersion = LanguageVersion.CSharp12 553LanguageVersion = LanguageVersion.CSharp12 572LanguageVersion = LanguageVersion.CSharp12 591LanguageVersion = LanguageVersion.CSharp12 610LanguageVersion = LanguageVersion.CSharp12 639LanguageVersion = LanguageVersion.CSharp12 718LanguageVersion = LanguageVersion.CSharp12 742LanguageVersion = LanguageVersion.CSharp12 773LanguageVersion = LanguageVersion.CSharp12 823LanguageVersion = LanguageVersion.CSharp12 852LanguageVersion = LanguageVersion.CSharp12 881LanguageVersion = LanguageVersion.CSharp12 910LanguageVersion = LanguageVersion.CSharp12 939LanguageVersion = LanguageVersion.CSharp12 968LanguageVersion = LanguageVersion.CSharp12 997LanguageVersion = LanguageVersion.CSharp12 1015LanguageVersion = LanguageVersion.CSharp12 1044LanguageVersion = LanguageVersion.CSharp12 1073LanguageVersion = LanguageVersion.CSharp12 1102LanguageVersion = LanguageVersion.CSharp12 1131LanguageVersion = LanguageVersion.CSharp12 1160LanguageVersion = LanguageVersion.CSharp12 1199LanguageVersion = LanguageVersion.CSharp12 1252LanguageVersion = LanguageVersion.CSharp12 1339LanguageVersion = LanguageVersion.CSharp12 1368LanguageVersion = LanguageVersion.CSharp12 1397LanguageVersion = LanguageVersion.CSharp12 1426LanguageVersion = LanguageVersion.CSharp12 1459LanguageVersion = LanguageVersion.CSharp12 1492LanguageVersion = LanguageVersion.CSharp12

1572[InlineData("iso-1", LanguageVersion.CSharp1)] 1573[InlineData("iso-2", LanguageVersion.CSharp2)] 1574[InlineData("1", LanguageVersion.CSharp1)] 1575[InlineData("1.0", LanguageVersion.CSharp1)] 1576[InlineData("2", LanguageVersion.CSharp2)] 1577[InlineData("2.0", LanguageVersion.CSharp2)] 1578[InlineData("3", LanguageVersion.CSharp3)] 1579[InlineData("3.0", LanguageVersion.CSharp3)] 1580[InlineData("4", LanguageVersion.CSharp4)] 1581[InlineData("4.0", LanguageVersion.CSharp4)] 1582[InlineData("5", LanguageVersion.CSharp5)] 1583[InlineData("5.0", LanguageVersion.CSharp5)] 1584[InlineData("6", LanguageVersion.CSharp6)] 1585[InlineData("6.0", LanguageVersion.CSharp6)] 1586[InlineData("7", LanguageVersion.CSharp7)] 1587[InlineData("7.0", LanguageVersion.CSharp7)] 1588[InlineData("7.1", LanguageVersion.CSharp7_1)] 1589[InlineData("7.2", LanguageVersion.CSharp7_2)] 1590[InlineData("7.3", LanguageVersion.CSharp7_3)] 1591[InlineData("8", LanguageVersion.CSharp8)] 1592[InlineData("8.0", LanguageVersion.CSharp8)] 1593[InlineData("9", LanguageVersion.CSharp9)] 1594[InlineData("9.0", LanguageVersion.CSharp9)] 1595[InlineData("preview", LanguageVersion.Preview)] 1596public void LangVersion_CanParseCorrectVersions(string value, LanguageVersion expectedVersion) 1610[InlineData("6", "7", LanguageVersion.CSharp7)] 1611[InlineData("7", "6", LanguageVersion.CSharp6)] 1612[InlineData("7", "1", LanguageVersion.CSharp1)] 1613[InlineData("6", "iso-1", LanguageVersion.CSharp1)] 1614[InlineData("6", "iso-2", LanguageVersion.CSharp2)] 1615[InlineData("6", "default", LanguageVersion.Default)] 1616[InlineData("7", "default", LanguageVersion.Default)] 1617[InlineData("iso-2", "6", LanguageVersion.CSharp6)] 1618public void LangVersion_LatterVersionOverridesFormerOne(string formerValue, string latterValue, LanguageVersion expectedVersion) 1628LanguageVersion defaultEffectiveVersion = LanguageVersion.Default.MapSpecifiedToEffectiveVersion(); 1629Assert.NotEqual(LanguageVersion.Default, defaultEffectiveVersion); 1634Assert.Equal(LanguageVersion.Default, parsedArgs.ParseOptions.SpecifiedLanguageVersion); 1641LanguageVersion latestEffectiveVersion = LanguageVersion.Latest.MapSpecifiedToEffectiveVersion(); 1642Assert.NotEqual(LanguageVersion.Latest, latestEffectiveVersion); 1647Assert.Equal(LanguageVersion.Latest, parsedArgs.ParseOptions.SpecifiedLanguageVersion); 1656Assert.Equal(LanguageVersion.Default, parsedArgs.ParseOptions.SpecifiedLanguageVersion); 1723Enum.GetValues(typeof(LanguageVersion)).Cast<LanguageVersion>().Select(v => v.ToDisplayString())); 1730var versions = Enum.GetValues(typeof(LanguageVersion)) 1731.Cast<LanguageVersion>() 1733LanguageVersion.Default, 1734LanguageVersion.Latest, 1735LanguageVersion.LatestMajor, 1736LanguageVersion.Preview 1767InlineData(LanguageVersion.CSharp1, LanguageVersion.CSharp1), 1768InlineData(LanguageVersion.CSharp2, LanguageVersion.CSharp2), 1769InlineData(LanguageVersion.CSharp3, LanguageVersion.CSharp3), 1770InlineData(LanguageVersion.CSharp4, LanguageVersion.CSharp4), 1771InlineData(LanguageVersion.CSharp5, LanguageVersion.CSharp5), 1772InlineData(LanguageVersion.CSharp6, LanguageVersion.CSharp6), 1773InlineData(LanguageVersion.CSharp7, LanguageVersion.CSharp7), 1774InlineData(LanguageVersion.CSharp7_1, LanguageVersion.CSharp7_1), 1775InlineData(LanguageVersion.CSharp7_2, LanguageVersion.CSharp7_2), 1776InlineData(LanguageVersion.CSharp7_3, LanguageVersion.CSharp7_3), 1777InlineData(LanguageVersion.CSharp8, LanguageVersion.CSharp8), 1778InlineData(LanguageVersion.CSharp9, LanguageVersion.CSharp9), 1779InlineData(LanguageVersion.CSharp10, LanguageVersion.CSharp10), 1780InlineData(LanguageVersion.CSharp11, LanguageVersion.CSharp11), 1781InlineData(LanguageVersion.CSharp12, LanguageVersion.CSharp12), 1782InlineData(LanguageVersion.CSharp13, LanguageVersion.CSharp13), 1783InlineData(LanguageVersion.CSharp13, LanguageVersion.LatestMajor), 1784InlineData(LanguageVersion.CSharp13, LanguageVersion.Latest), 1785InlineData(LanguageVersion.CSharp13, LanguageVersion.Default), 1786InlineData(LanguageVersion.Preview, LanguageVersion.Preview), 1788public void LanguageVersion_MapSpecifiedToEffectiveVersion(LanguageVersion expectedMappedVersion, LanguageVersion input) 1798InlineData("iso-1", true, LanguageVersion.CSharp1), 1799InlineData("ISO-1", true, LanguageVersion.CSharp1), 1800InlineData("iso-2", true, LanguageVersion.CSharp2), 1801InlineData("1", true, LanguageVersion.CSharp1), 1802InlineData("1.0", true, LanguageVersion.CSharp1), 1803InlineData("2", true, LanguageVersion.CSharp2), 1804InlineData("2.0", true, LanguageVersion.CSharp2), 1805InlineData("3", true, LanguageVersion.CSharp3), 1806InlineData("3.0", true, LanguageVersion.CSharp3), 1807InlineData("4", true, LanguageVersion.CSharp4), 1808InlineData("4.0", true, LanguageVersion.CSharp4), 1809InlineData("5", true, LanguageVersion.CSharp5), 1810InlineData("5.0", true, LanguageVersion.CSharp5), 1811InlineData("05", false, LanguageVersion.Default), 1812InlineData("6", true, LanguageVersion.CSharp6), 1813InlineData("6.0", true, LanguageVersion.CSharp6), 1814InlineData("7", true, LanguageVersion.CSharp7), 1815InlineData("7.0", true, LanguageVersion.CSharp7), 1816InlineData("07", false, LanguageVersion.Default), 1817InlineData("7.1", true, LanguageVersion.CSharp7_1), 1818InlineData("7.2", true, LanguageVersion.CSharp7_2), 1819InlineData("7.3", true, LanguageVersion.CSharp7_3), 1820InlineData("8", true, LanguageVersion.CSharp8), 1821InlineData("8.0", true, LanguageVersion.CSharp8), 1822InlineData("9", true, LanguageVersion.CSharp9), 1823InlineData("9.0", true, LanguageVersion.CSharp9), 1824InlineData("10", true, LanguageVersion.CSharp10), 1825InlineData("10.0", true, LanguageVersion.CSharp10), 1826InlineData("11", true, LanguageVersion.CSharp11), 1827InlineData("11.0", true, LanguageVersion.CSharp11), 1828InlineData("12", true, LanguageVersion.CSharp12), 1829InlineData("12.0", true, LanguageVersion.CSharp12), 1830InlineData("13", true, LanguageVersion.CSharp13), 1831InlineData("13.0", true, LanguageVersion.CSharp13), 1832InlineData("08", false, LanguageVersion.Default), 1833InlineData("07.1", false, LanguageVersion.Default), 1834InlineData("default", true, LanguageVersion.Default), 1835InlineData("latest", true, LanguageVersion.Latest), 1836InlineData("latestmajor", true, LanguageVersion.LatestMajor), 1837InlineData("preview", true, LanguageVersion.Preview), 1838InlineData("latestpreview", false, LanguageVersion.Default), 1839InlineData(null, true, LanguageVersion.Default), 1840InlineData("bad", false, LanguageVersion.Default)] 1841public void LanguageVersion_TryParseDisplayString(string input, bool success, LanguageVersion expected) 1843Assert.Equal(success, LanguageVersionFacts.TryParse(input, out var version)); 1855Assert.True(LanguageVersionFacts.TryParse("ISO-1", out var version)); 1856Assert.Equal(LanguageVersion.CSharp1, version); 1869var expected = Enum.GetValues(typeof(LanguageVersion)).Cast<LanguageVersion>() 12482VerifyQuotedValid("langversion", "2", LanguageVersion.CSharp2, x => x.ParseOptions.LanguageVersion); 14851public void SourceGeneratorsRunRegardlessOfLanguageVersion(LanguageVersion version)

139if (!ConvertNamespaceAnalysis.CanOfferUseFileScoped(s_fileScopedNamespacePreferenceOption, (CompilationUnitSyntax)parsedDocument.Root, namespaceDecl, forAnalyzer: true, LanguageVersion.CSharp10))

24new(languageVersion: LanguageVersion.Latest, kind: SourceCodeKind.Script);

175parseOptions: new CSharpParseOptions(LanguageVersion.CSharp7));

2985[new CSharpParseOptions(LanguageVersion.CSharp8)],

103LanguageVersion = LanguageVersion.CSharp6, 133LanguageVersion = LanguageVersion.CSharp7, 164LanguageVersion = LanguageVersion.CSharp6, 201LanguageVersion = LanguageVersion.CSharp6, 283LanguageVersion = LanguageVersion.CSharp6, 314LanguageVersion = LanguageVersion.CSharp6, 345LanguageVersion = LanguageVersion.CSharp6, 381LanguageVersion = LanguageVersion.CSharp6, 416LanguageVersion = LanguageVersion.CSharp6, 469LanguageVersion = LanguageVersion.CSharp6, 530LanguageVersion = LanguageVersion.CSharp6, 776LanguageVersion = LanguageVersion.CSharp6, 839LanguageVersion = LanguageVersion.CSharp6, 876LanguageVersion = LanguageVersion.CSharp6, 924LanguageVersion = LanguageVersion.CSharp6, 970LanguageVersion = LanguageVersion.CSharp6, 1008LanguageVersion = LanguageVersion.CSharp6, 1044LanguageVersion = LanguageVersion.CSharp6, 1081LanguageVersion = LanguageVersion.CSharp6, 1126LanguageVersion = LanguageVersion.CSharp6, 1304LanguageVersion = LanguageVersion.CSharp6, 1335LanguageVersion = LanguageVersion.CSharp6, 1366LanguageVersion = LanguageVersion.CSharp6, 1403LanguageVersion = LanguageVersion.CSharp6, 1440LanguageVersion = LanguageVersion.CSharp6, 1485LanguageVersion = LanguageVersion.CSharp6, 1532LanguageVersion = LanguageVersion.CSharp6, 1577LanguageVersion = LanguageVersion.CSharp6, 1614LanguageVersion = LanguageVersion.CSharp6, 1651LanguageVersion = LanguageVersion.CSharp6, 1696LanguageVersion = LanguageVersion.CSharp6, 1733LanguageVersion = LanguageVersion.CSharp6, 1769LanguageVersion = LanguageVersion.CSharp6, 1807LanguageVersion = LanguageVersion.CSharp6, 1843LanguageVersion = LanguageVersion.CSharp6, 1871LanguageVersion = LanguageVersion.CSharp6, 2016LanguageVersion = LanguageVersion.CSharp6, 2053LanguageVersion = LanguageVersion.CSharp6, 2094LanguageVersion = LanguageVersion.CSharp6, 2142LanguageVersion = LanguageVersion.CSharp6, 2192LanguageVersion = LanguageVersion.CSharp6, 2258LanguageVersion = LanguageVersion.CSharp6, 2296LanguageVersion = LanguageVersion.CSharp6, 2388LanguageVersion = LanguageVersion.CSharp8, 2430LanguageVersion = LanguageVersion.CSharp8, 2468LanguageVersion = LanguageVersion.CSharp6, 2507LanguageVersion = LanguageVersion.CSharp7, 2546LanguageVersion = LanguageVersion.CSharp8, 2585LanguageVersion = LanguageVersion.CSharp9, 2625LanguageVersion = LanguageVersion.CSharp8, 2668LanguageVersion = LanguageVersion.CSharp8, 2701LanguageVersion = LanguageVersion.CSharp6, 2709LanguageVersion = LanguageVersion.CSharp6, 2855LanguageVersion = LanguageVersion.CSharp6, 2913LanguageVersion = LanguageVersion.CSharp6, 2978LanguageVersion = LanguageVersion.CSharp6, 3055LanguageVersion = LanguageVersion.CSharp6, 3121LanguageVersion = LanguageVersion.CSharp6, 3194LanguageVersion = LanguageVersion.CSharp6, 3266LanguageVersion = LanguageVersion.CSharp6, 3337LanguageVersion = LanguageVersion.CSharp6, 3533LanguageVersion = LanguageVersion.Default, 3584LanguageVersion = LanguageVersion.Default, 3878LanguageVersion = LanguageVersion.Default, 3892LanguageVersion = LanguageVersion.CSharp12,

5227parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp10),

36LanguageVersion = LanguageVersion.CSharp11, 68LanguageVersion = LanguageVersion.CSharp11, 132LanguageVersion = LanguageVersion.CSharp6, 282[InlineData(LanguageVersion.CSharp11)] 283[InlineData(LanguageVersion.CSharp8)] 284public Task TestNotOnPartialMethodDefinition1(LanguageVersion languageVersion) 306LanguageVersion = LanguageVersion.CSharp9, 322[InlineData(LanguageVersion.CSharp11)] 323[InlineData(LanguageVersion.CSharp8)] 324public Task TestNotOnPartialMethodDefinition2(LanguageVersion languageVersion) 346LanguageVersion = LanguageVersion.CSharp9, 397LanguageVersion = LanguageVersion.CSharp9, 464LanguageVersion = LanguageVersion.CSharp9, 933LanguageVersion = LanguageVersion.CSharp6, 1672LanguageVersion = LanguageVersion.CSharp11, 1709LanguageVersion = LanguageVersion.CSharp11, 1826LanguageVersion = LanguageVersion.CSharp11, 2917[InlineData(LanguageVersion.CSharp10)] 2918[InlineData(LanguageVersion.CSharp11)] 2919public Task TestNotInRecord(LanguageVersion version) 2932LanguageVersion = LanguageVersion.CSharp12, 2942LanguageVersion = LanguageVersion.CSharp12, 3619LanguageVersion = LanguageVersion.Latest,

55LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 80LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9,

667LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp10 3305LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp10, 3323LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp10, 3344LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp10,

34[StringSyntax(PredefinedEmbeddedLanguageNames.CSharpTest)] string source, LanguageVersion languageVersion)

37[StringSyntax(PredefinedEmbeddedLanguageNames.CSharpTest)] string code, LanguageVersion languageVersion = LanguageVersion.Default) 44[StringSyntax(PredefinedEmbeddedLanguageNames.CSharpTest)] string code, LanguageVersion languageVersion = LanguageVersion.Default, string? inlineDescription = null, bool dotAwait = false, bool dotAwaitf = false) 83""", LanguageVersion.CSharp9); 94""", LanguageVersion.CSharp9); 98=> VerifyKeywordAsync("$$", LanguageVersion.CSharp9); 109""", LanguageVersion.CSharp9); 120""", LanguageVersion.CSharp9); 124=> VerifyKeywordAsync("var z = $$", LanguageVersion.CSharp9); 135""", LanguageVersion.CSharp9); 139=> VerifyAbsenceAsync("using $$", LanguageVersion.CSharp9); 158""", LanguageVersion.CSharp9); 162=> VerifyAbsenceAsync("foreach $$", LanguageVersion.CSharp9); 174""", LanguageVersion.CSharp9); 182""", LanguageVersion.CSharp9); 194""", LanguageVersion.CSharp9); 202""", LanguageVersion.CSharp9); 214""", LanguageVersion.CSharp9); 222""", LanguageVersion.CSharp9); 233""", LanguageVersion.CSharp9); 237=> VerifyAbsenceAsync("lock (this) { $$ }", LanguageVersion.CSharp9); 249""", LanguageVersion.CSharp9); 257""", LanguageVersion.CSharp9); 268""", LanguageVersion.CSharp9); 272=> VerifyKeywordAsync("lock($$", LanguageVersion.CSharp9);

563[InlineData(LanguageVersion.CSharp7)] 564[InlineData(LanguageVersion.CSharp8)] 565[InlineData(LanguageVersion.Latest)] 568public async Task Parameter10(LanguageVersion languageVersion) 583if (languageVersion.MapSpecifiedToEffectiveVersion() >= LanguageVersion.CSharp8) 593[InlineData(LanguageVersion.CSharp7)] 594[InlineData(LanguageVersion.CSharp8)] 595[InlineData(LanguageVersion.Latest)] 598public async Task Parameter11(LanguageVersion languageVersion) 614if (languageVersion.MapSpecifiedToEffectiveVersion() >= LanguageVersion.CSharp8) 624[InlineData(LanguageVersion.CSharp7)] 625[InlineData(LanguageVersion.CSharp8)] 626[InlineData(LanguageVersion.Latest)] 629public async Task Parameter12(LanguageVersion languageVersion) 645if (languageVersion.MapSpecifiedToEffectiveVersion() >= LanguageVersion.CSharp8) 2306[InlineData(LanguageVersion.CSharp7)] 2307[InlineData(LanguageVersion.CSharp8)] 2308[InlineData(LanguageVersion.Latest)] 2311public async Task TestUseLocalAsLocalFunctionParameter(LanguageVersion languageVersion) 2326if (languageVersion.MapSpecifiedToEffectiveVersion() >= LanguageVersion.CSharp8) 2337[InlineData(LanguageVersion.CSharp7)] 2338[InlineData(LanguageVersion.CSharp8)] 2339[InlineData(LanguageVersion.Latest)] 2342public async Task TestCompletionDoesNotUseLocalAsLocalFunctionVariable(LanguageVersion languageVersion)

3517var options = CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.Latest);

11920await VerifyItemExistsAsync(MakeMarkup(source, languageVersion: LanguageVersion.CSharp10), "parameter"); 11987await VerifyItemExistsAsync(MakeMarkup(source, languageVersion: LanguageVersion.CSharp10), "parameter"); 12004await VerifyItemExistsAsync(MakeMarkup(source, languageVersion: LanguageVersion.CSharp10), "parameter"); 12021await VerifyItemExistsAsync(MakeMarkup(source, languageVersion: LanguageVersion.CSharp10), "parameter"); 12038await VerifyItemExistsAsync(MakeMarkup(source, languageVersion: LanguageVersion.CSharp10), "parameter"); 12050await VerifyItemExistsAsync(MakeMarkup(source, languageVersion: LanguageVersion.CSharp10), "parameter"); 12061await VerifyItemExistsAsync(MakeMarkup(source, languageVersion: LanguageVersion.CSharp10), "parameter"); 13609LanguageVersion languageVersion = LanguageVersion.Preview)

392parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp10), 432parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9), 473parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp10), 735parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp10),

57parseOptions: new CSharpParseOptions(LanguageVersion.CSharp10)); 79parseOptions: new CSharpParseOptions(LanguageVersion.CSharp10)); 101parseOptions: new CSharpParseOptions(LanguageVersion.CSharp9));

2219""", parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp12)); 2238""", parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp12)); 2257""", parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp12)); 2271""", parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp12)); 2285""", parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp12)); 2299""", parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp12));

3201options: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp12)); 3219options: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp12)); 3238options: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp12)); 3257options: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp12));

1294parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp6),

1285Options.Regular.WithLanguageVersion(LanguageVersion.Preview), 1299Options.Regular.WithLanguageVersion(LanguageVersion.Preview), 1313Options.Regular.WithLanguageVersion(LanguageVersion.Preview), 1327Options.Regular.WithLanguageVersion(LanguageVersion.Preview), 1341Options.Regular.WithLanguageVersion(LanguageVersion.Preview), 1355Options.Regular.WithLanguageVersion(LanguageVersion.Preview), 2822Options.Regular.WithLanguageVersion(LanguageVersion.CSharp8), 2843Options.Regular.WithLanguageVersion(LanguageVersion.CSharp8), 8064Options.Regular.WithLanguageVersion(LanguageVersion.CSharp9), 8077Options.Regular.WithLanguageVersion(LanguageVersion.CSharp9), 8184Options.Regular.WithLanguageVersion(LanguageVersion.CSharp9), 8197Options.Regular.WithLanguageVersion(LanguageVersion.CSharp9), 8210Options.Regular.WithLanguageVersion(LanguageVersion.CSharp9), 8223Options.Regular.WithLanguageVersion(LanguageVersion.CSharp9), 8240Options.Regular.WithLanguageVersion(LanguageVersion.Preview), 8604Options.Regular.WithLanguageVersion(LanguageVersion.CSharp9), 8616Options.Regular.WithLanguageVersion(LanguageVersion.CSharp9), 8629Options.Regular.WithLanguageVersion(LanguageVersion.CSharp9), 9110=> TestWithOptionsAsync(Options.Regular.WithLanguageVersion(LanguageVersion.CSharp11), """ 9123=> TestWithOptionsAsync(Options.Regular.WithLanguageVersion(LanguageVersion.CSharp11), """ 9135=> TestWithOptionsAsync(Options.Regular.WithLanguageVersion(LanguageVersion.CSharp11), """ 9822CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.Preview), 9848CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.Preview), 9875CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.Preview), 9902CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.Preview), 9928CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.Preview), 9949CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.Preview),

26protected static readonly CSharpParseOptions CSharp9ParseOptions = CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9);

40var sourceCompilation = CreateCompilationWithMscorlib40(source, options: TestOptions.DebugExe.WithMainTypeName("Program"), parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 65var sourceCompilation = CreateCompilationWithMscorlib40(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7)); 93var sourceCompilation = CreateCompilationWithMscorlib40(source, options: TestOptions.DebugExe.WithMainTypeName("Program"), parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7)); 118var sourceCompilation = CreateCompilationWithMscorlib40(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 159var sourceCompilation = CreateCompilationWithMscorlib40(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7)); 202var sourceCompilation = CreateCompilationWithMscorlib40(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 233var sourceCompilation = CreateCompilationWithMscorlib40(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7)); 270var sourceCompilation = CreateCompilationWithMscorlib40(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 306var sourceCompilation = CreateCompilationWithMscorlib40(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 337var sourceCompilation = CreateCompilationWithMscorlib40(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 381var sourceCompilation = CreateEmptyCompilation(source, new[] { corCompilation.ToMetadataReference(), taskCompilation.ToMetadataReference() }, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 421var sourceCompilation = CreateEmptyCompilation(source, new[] { corCompilation.ToMetadataReference(), taskCompilation.ToMetadataReference() }, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 449var c = CreateCompilationWithMscorlib461(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 467var c = CreateCompilationWithMscorlib461(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 489var c = CreateCompilationWithMscorlib461(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 508var c = CreateCompilationWithMscorlib461(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 526var c = CreateCompilationWithMscorlib461(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 544var c = CreateCompilationWithMscorlib461(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 566var c = CreateCompilationWithMscorlib461(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 584var c = CreateCompilationWithMscorlib461(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 601var compilation = CreateCompilationWithMscorlib461(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 623var compilation = CreateCompilationWithMscorlib461(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 645var compilation = CreateCompilationWithMscorlib461(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 667var compilation = CreateCompilationWithMscorlib461(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7)); 690var compilation = CreateCompilationWithMscorlib461(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7)); 712var compilation = CreateCompilationWithMscorlib461(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 789var compilation = CreateCompilationWithMscorlib461(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 809var compilation = CreateCompilationWithMscorlib461(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7)); 831var compilation = CreateCompilationWithMscorlib461(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 858var compilation = CreateCompilationWithMscorlib461(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7)); 883var compilation = CreateCompilationWithMscorlib461(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 903var compilation = CreateCompilationWithMscorlib461(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 923var compilation = CreateCompilationWithMscorlib461(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7)); 945var compilation = CreateCompilationWithMscorlib461(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7)); 967var compilation = CreateCompilationWithMscorlib461(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 987var compilation = CreateCompilationWithMscorlib461(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 1007var compilation = CreateCompilationWithMscorlib461(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7)); 1029var compilation = CreateCompilationWithMscorlib461(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7)); 1052var compilation = CreateCompilationWithMscorlib461(source, options: TestOptions.ReleaseExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 1074CreateCompilationWithMscorlib461(source, options: TestOptions.ReleaseExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)).VerifyDiagnostics( 1142var compilation = CreateCompilationWithMscorlib461(source, options: TestOptions.ReleaseExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7)).VerifyDiagnostics(); 1164var compilation = CreateCompilationWithMscorlib461(source, options: TestOptions.ReleaseExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)).VerifyDiagnostics( 1220var compilation = CreateCompilationWithMscorlib461(source, options: TestOptions.ReleaseExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)).VerifyDiagnostics( 1273var compilation = CreateCompilationWithMscorlib461(source, options: TestOptions.ReleaseDebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7)).VerifyDiagnostics( 1310var compilation = CreateCompilationWithMscorlib461(source, options: TestOptions.ReleaseDebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7)).VerifyDiagnostics( 1411var sourceCompilation = CreateCompilationWithMscorlib40(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 1465var sourceCompilation = CreateCompilationWithMscorlib40(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 1520var sourceCompilation = CreateCompilationWithMscorlib40(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1));

8073[InlineData("in", LanguageVersion.CSharp9)] 8074[InlineData("ref readonly", LanguageVersion.Preview)] 8075public void TestGetAsyncEnumeratorPatternViaInExtensionOnNonAssignableVariable(string modifier, LanguageVersion languageVersion) 8105[InlineData("in", LanguageVersion.CSharp9)] 8106[InlineData("ref readonly", LanguageVersion.Preview)] 8107public void TestGetAsyncEnumeratorPatternViaInExtensionOnAssignableVariable(string modifier, LanguageVersion languageVersion)

1636parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7)); 1685sourceSymbolValidator: validator, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 3343parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 5371var comp = CreateCompilationWithMscorlib461(source, parseOptions: TestOptions.Script.WithLanguageVersion(LanguageVersion.CSharp6), options: TestOptions.DebugExe, references: s_valueTupleRefs); 8777parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7)); 8782parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 8802parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7)); 8807parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 8828parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7)); 8833parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 8863parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7)); 8868parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 8889parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7)); 8894parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 8932parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7)); 8939parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 8987parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7)); 8993parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1));

2244public void MethodCallWithParams3(LanguageVersion languageVersion) 2261if (languageVersion == LanguageVersion.CSharp13) 3492CreateCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp6)).VerifyDiagnostics(

4012var comp = CreateCompilation(text, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp6));

2304var comp = CreateCompilation(text, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp6)); 2339var comp = CreateCompilation(text, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp6)); 2381var comp = CreateCompilation(text, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp6)); 2402var comp = CreateCompilation(text, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp6)); 2431var comp = CreateCompilation(text, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp6));

50parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_3), 123parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_3), 214", options: TestOptions.ReleaseDll, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_3)); 313parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_3), 369parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_3), 410parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_3), 429parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_3), 493parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_3), 528parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_3), 568parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_3), 670parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_3), 726parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_3), 869", options: TestOptions.UnsafeReleaseExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_3)); 1050", options: TestOptions.UnsafeReleaseExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_3)); 1699parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_3),

3945var verifier = CompileAndVerify(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1), 3971var compilation = CreateCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1)); 4029var verifier = CompileAndVerify(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1), 4050var verifier = CompileAndVerify(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1), 4077var comp7 = CreateCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7)); 4084var verifier7_1 = CompileAndVerify(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1), 4105var comp = CreateEmptyCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7), 25688var comp = CreateEmptyCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1), 25733var comp = CreateEmptyCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1), 25759var comp = CreateEmptyCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1), 25804var comp = CreateEmptyCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1), 25830var comp = CreateEmptyCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1), 25869var comp = CreateEmptyCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1), 25902var comp = CreateEmptyCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp7_1),

57parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.Preview));

817}", options: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9)); 834}", options: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9));

11332", options: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9)); 11351", options: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9));

5048var source0 = MarkedSource(sourceText, options: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9)); 5049var source1 = MarkedSource(sourceText, options: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9)); 5050var source2 = MarkedSource(sourceText, options: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9));

353languageVersion: LanguageVersion.CSharp8, 357yield return parseOptions.WithLanguageVersion(LanguageVersion.CSharp9); 358yield return parseOptions.WithLanguageVersion(LanguageVersion.Latest); 359yield return parseOptions.WithLanguageVersion(LanguageVersion.Preview);

911parseOptions: TestOptions.Script.WithLanguageVersion(LanguageVersion.Preview), 1299parseOptions: new CSharpParseOptions(kind: sourceCodeKind, languageVersion: LanguageVersion.CSharp7_2))); 1309parseOptions: new CSharpParseOptions(kind: sourceCodeKind, languageVersion: LanguageVersion.CSharp7_2)); 1351parseOptions: new CSharpParseOptions(kind: sourceCodeKind, languageVersion: LanguageVersion.CSharp7_2))); 1365parseOptions: new CSharpParseOptions(kind: sourceCodeKind, languageVersion: LanguageVersion.Preview))); 1394CreateCompilationWithMscorlib461(source: source, parseOptions: new CSharpParseOptions(kind: sourceCodeKind, languageVersion: LanguageVersion.CSharp7_2)).VerifyDiagnostics(

82[CombinatorialValues(LanguageVersion.CSharp10, LanguageVersion.CSharp11)] LanguageVersion languageVersion, 164[CombinatorialValues(LanguageVersion.CSharp10, LanguageVersion.CSharp11)] LanguageVersion languageVersionA, 165[CombinatorialValues(LanguageVersion.CSharp10, LanguageVersion.CSharp11)] LanguageVersion languageVersionB, 173bool useUpdatedEscapeRulesA = languageVersionA == LanguageVersion.CSharp11; 182Assert.Equal(languageVersionB == LanguageVersion.CSharp11, comp.SourceModule.UseUpdatedEscapeRules);

13701CreateCompilation(code, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp7_3)).VerifyDiagnostics( 13718CreateEmptyCompilation(code, references: WinRtRefs, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp7_3)).VerifyDiagnostics( 13744CreateCompilation(code, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp7_3)).VerifyDiagnostics( 13770CreateEmptyCompilation(code, references: WinRtRefs, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp7_3)).VerifyDiagnostics(

534var compilation = CreateEmptyCompilation(string.Empty, parseOptions: new CSharpParseOptions().WithLanguageVersion((LanguageVersion)10000)); 606var parseOptions = new CSharpParseOptions(LanguageVersion.Latest);