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);

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

60/// <see cref="LanguageVersion.CSharp8"/>. 62public LanguageVersion LanguageVersion { get; set; } = LanguageVersion.CSharp8;

59/// <see cref="LanguageVersion.CSharp8"/>. 61public LanguageVersion LanguageVersion { get; set; } = LanguageVersion.CSharp8;

4528LanguageVersion requiredVersion = MessageID.IDS_FeatureNestedStackalloc.RequiredVersion(); 10618if (Compilation.LanguageVersion < LanguageVersion.CSharp13)

630var requiredVersion = MessageID.IDS_FeatureRecursivePatterns.RequiredVersion(); 773LanguageVersion requiredVersion = MessageID.IDS_FeatureGenericPatternMatching.RequiredVersion();

611internal static CSDiagnosticInfo? GetNullableUnconstrainedTypeParameterDiagnosticIfNecessary(LanguageVersion languageVersion, in TypeWithAnnotations type) 617var requiredVersion = MessageID.IDS_FeatureDefaultTypeParameterConstraint.RequiredVersion();

1304(binder.Compilation.LanguageVersion > LanguageVersion.CSharp12 || member.ContainingModule == binder.Compilation.SourceModule))) 3017if (Compilation.LanguageVersion < LanguageVersion.CSharp13)

88LanguageVersion 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(); 266LanguageVersion availableVersion = LanguageVersion; 267LanguageVersion requiredVersion = feature.RequiredVersion();

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

453private static CSDiagnosticInfo GetDisabledFeatureDiagnosticInfo(MessageID feature, LanguageVersion availableVersion) 461LanguageVersion requiredVersion = feature.RequiredVersion(); 462return requiredVersion == LanguageVersion.Preview.MapSpecifiedToEffectiveVersion() 467internal static LanguageVersion RequiredVersion(this MessageID feature) 481return LanguageVersion.Preview; 493return LanguageVersion.CSharp13; 504return LanguageVersion.CSharp12; 522return LanguageVersion.CSharp11; 543return LanguageVersion.CSharp10; 571return LanguageVersion.CSharp9; 596return LanguageVersion.CSharp8; 612return LanguageVersion.CSharp7_3; 623return LanguageVersion.CSharp7_2; 630return LanguageVersion.CSharp7_1; 644return LanguageVersion.CSharp7; 659return LanguageVersion.CSharp6; 663return LanguageVersion.CSharp5; 670return LanguageVersion.CSharp4; 683return LanguageVersion.CSharp3; 699return LanguageVersion.CSharp2; 703return LanguageVersion.CSharp1;

2425var 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)

326var specified = this.Options.SpecifiedLanguageVersion; 327var effective = specified.MapSpecifiedToEffectiveVersion(); 337if (this.Options.LanguageVersion != LanguageVersion.Preview && 339LanguageVersionFacts.TryParse(errorText.Substring(versionMarker.Length), out var languageVersion))

153LanguageVersion availableVersion = ((CSharpParseOptions)errorLocation.SourceTree.Options).LanguageVersion; 154LanguageVersion requiredVersion; 194internal static void ReportUnsupportedModifiersForLanguageVersion(DeclarationModifiers modifiers, DeclarationModifiers unsupportedModifiers, Location errorLocation, BindingDiagnosticBag diagnostics, LanguageVersion availableVersion, LanguageVersion requiredVersion) 217LanguageVersion availableVersion = ((CSharpParseOptions)location.SourceTree.Options).LanguageVersion; 218LanguageVersion requiredVersion = MessageID.IDS_FeatureStaticAbstractMembersInInterfaces.RequiredVersion();

4474var languageVersion = ((CSharpParseOptions)this.GetFirstLocation().SourceTree!.Options).LanguageVersion; 4475var requiredVersion = MessageID.IDS_FeatureSealedToStringInRecord.RequiredVersion();

452LanguageVersion availableVersion = ((CSharpParseOptions)location.SourceTree.Options).LanguageVersion; 453LanguageVersion requiredVersion = MessageID.IDS_FeaturePartialProperties.RequiredVersion();

169LanguageVersion availableVersion = ((CSharpParseOptions)location.SourceTree.Options).LanguageVersion; 170LanguageVersion requiredVersion = MessageID.IDS_FeatureStaticAbstractMembersInInterfaces.RequiredVersion();

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

166var languageVersion = this.DeclaringCompilation.LanguageVersion;

1015LanguageVersion requiredVersion = MessageID.IDS_FeatureImplicitImplementationOfNonPublicMembers.RequiredVersion(); 1016LanguageVersion? availableVersion = implementingType.DeclaringCompilation?.LanguageVersion; 1639LanguageVersion requiredVersion = feature.RequiredVersion(); 1640LanguageVersion? availableVersion = implementingType.DeclaringCompilation?.LanguageVersion; 1740LanguageVersion requiredVersion = MessageID.IDS_FeatureStaticAbstractMembersInInterfaces.RequiredVersion(); 1741LanguageVersion? 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);

35if (context.Compilation.LanguageVersion() < LanguageVersion.CSharp8)

29if (node.GetLanguageVersion() < LanguageVersion.CSharp6)

68if (csOptions.LanguageVersion < LanguageVersion.CSharp7)

52if (ifStatement.SyntaxTree.Options.LanguageVersion() < LanguageVersion.CSharp6)

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

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

38if (compilation.LanguageVersion() < LanguageVersion.CSharp8)

34if (compilation.LanguageVersion() < LanguageVersion.CSharp7_2)

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

37if (compilation.LanguageVersion < LanguageVersion.CSharp8)

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

45if (compilationContext.Compilation.LanguageVersion() < LanguageVersion.CSharp10)

43=> compilation.LanguageVersion() >= LanguageVersion.CSharp6; 46=> compilation.LanguageVersion() >= LanguageVersion.CSharp6; 49=> compilation.LanguageVersion() >= LanguageVersion.Preview;

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

27options.LanguageVersion() >= LanguageVersion.CSharp8;

46if (context.Compilation.LanguageVersion() < LanguageVersion.CSharp8)

142var languageVersion = body.SyntaxTree.Options.LanguageVersion(); 191var languageVersion = declaration.GetLanguageVersion(); 192if (languageVersion < LanguageVersion.CSharp7) 213if (languageVersion < LanguageVersion.CSharp6)

55var languageVersion = declaration.SyntaxTree.Options.LanguageVersion(); 57languageVersion < LanguageVersion.CSharp7) 67ExpressionBodyPreference preference, LambdaExpressionSyntax declaration, LanguageVersion languageVersion, CancellationToken cancellationToken) 109LanguageVersion languageVersion,

44if (syntaxTree.Options.LanguageVersion() < LanguageVersion.CSharp9)

64if (compilation.LanguageVersion < LanguageVersion.CSharp8)

57if (compilation.LanguageVersion() < LanguageVersion.CSharp8)

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

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

36if (compilation.LanguageVersion() < LanguageVersion.CSharp9)

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

47if (context.Compilation.LanguageVersion() >= LanguageVersion.CSharp11)

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

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

60if (syntaxTree.Options.LanguageVersion() < LanguageVersion.CSharp9)

46if (context.Compilation.LanguageVersion() < LanguageVersion.CSharp8) 67asExpression, out var conditionalAccessExpression, out var binaryExpression, out var isPatternExpression, out var requiredLanguageVersion))

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

52if (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);

70if (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) 33internal const LanguageVersion CSharpNext = LanguageVersion.Preview;

9public static LanguageVersion LanguageVersion(this ParseOptions options)

508var languageVersion = semanticModel.SyntaxTree.Options.LanguageVersion(); 511return languageVersion >= LanguageVersion.CSharp11 && semanticModel.Compilation.SupportsRuntimeCapability(RuntimeCapability.NumericIntPtr);

23public static LanguageVersion GetLanguageVersion(this SyntaxNode node)

49=> options.LanguageVersion() >= LanguageVersion.CSharp6; 52=> options.LanguageVersion() >= LanguageVersion.CSharp7; 55=> options.LanguageVersion() >= LanguageVersion.CSharp7; 58=> options.LanguageVersion() >= LanguageVersion.CSharp9; 61=> options.LanguageVersion() >= LanguageVersion.CSharp10; 64=> options.LanguageVersion() >= LanguageVersion.CSharp9; 67=> options.LanguageVersion() >= LanguageVersion.CSharp10; 70=> options.LanguageVersion() >= LanguageVersion.CSharp7; 77=> options.LanguageVersion() >= LanguageVersion.CSharp10; 1488=> options.LanguageVersion() >= LanguageVersion.CSharp9;

21if (parseOptions.LanguageVersion < LanguageVersion.CSharp7_1)

1547if (originalSemanticModel.Compilation.LanguageVersion() < LanguageVersion.CSharp9 &&

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

318if (!conversion.Exists && expression is LambdaExpressionSyntax && semanticModel.Compilation.LanguageVersion() >= LanguageVersion.CSharp10)

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

41if (root.GetLanguageVersion() < LanguageVersion.CSharp11)

101parent.SyntaxTree.Options.LanguageVersion() >= LanguageVersion.CSharp9)

68private static LanguageVersion RequiredVersion(ImmutableArray<Diagnostic> diagnostics) 70LanguageVersion max = 0; 74LanguageVersionFacts.TryParse(requiredVersion, out var required)) 80max = LanguageVersion.Preview; 92Contract.ThrowIfFalse(LanguageVersionFacts.TryParse(newVersion, out var parsedNewVersion)); 106Contract.ThrowIfFalse(LanguageVersionFacts.TryParse(newVersion, out var parsedNewVersion)); 109var mappedVersion = parsedNewVersion.MapSpecifiedToEffectiveVersion();

34private static LambdaExpressionSyntax WithExpressionBody(LambdaExpressionSyntax declaration, LanguageVersion languageVersion, CancellationToken cancellationToken)

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

89if (languageVersion >= LanguageVersion.CSharp8)

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,

46if (semanticModel.Compilation.LanguageVersion().MapSpecifiedToEffectiveVersion() >= LanguageVersion.CSharp8) 68var isLanguageVersionGreaterOrEqualToCSharp8 = (semanticModel.Compilation as CSharpCompilation)?.LanguageVersion >= LanguageVersion.CSharp8;

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

203LanguageVersion = LanguageVersion.CSharp9, 229LanguageVersion = LanguageVersion.CSharp12, 566LanguageVersion = LanguageVersion.CSharp10, 596LanguageVersion = LanguageVersion.CSharp12, 623LanguageVersion = LanguageVersion.CSharp12, 645LanguageVersion = LanguageVersion.CSharp12, 657LanguageVersion = LanguageVersion.CSharp12, 689LanguageVersion = LanguageVersion.CSharp12, 713LanguageVersion = LanguageVersion.CSharp12, 740LanguageVersion = LanguageVersion.CSharp12, 789LanguageVersion = LanguageVersion.CSharp12, 837LanguageVersion = LanguageVersion.CSharp12, 885LanguageVersion = LanguageVersion.CSharp12,

2810""", parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9)); 2920""", parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9)); 2936""", parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp12)); 2962""", parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9)); 2978""", parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp12));

46LanguageVersion = LanguageVersion.CSharp9, 67LanguageVersion = LanguageVersion.CSharp9, 84LanguageVersion = LanguageVersion.CSharp10, 106LanguageVersion = LanguageVersion.CSharp10, 133LanguageVersion = LanguageVersion.CSharp10, 160LanguageVersion = LanguageVersion.CSharp10, 189LanguageVersion = LanguageVersion.CSharp10, 216LanguageVersion = LanguageVersion.CSharp10, 245LanguageVersion = LanguageVersion.CSharp10, 272LanguageVersion = LanguageVersion.CSharp10, 306LanguageVersion = LanguageVersion.CSharp10, 339LanguageVersion = LanguageVersion.CSharp10, 364LanguageVersion = LanguageVersion.CSharp10, 388LanguageVersion = LanguageVersion.CSharp10, 413LanguageVersion = LanguageVersion.CSharp10, 437LanguageVersion = LanguageVersion.CSharp10, 465LanguageVersion = LanguageVersion.CSharp10, 495LanguageVersion = LanguageVersion.CSharp10, 523LanguageVersion = LanguageVersion.CSharp10, 552LanguageVersion = LanguageVersion.CSharp10, 582LanguageVersion = LanguageVersion.CSharp10,

32LanguageVersion = LanguageVersion.CSharp9, 51LanguageVersion = LanguageVersion.CSharp10, 72LanguageVersion = LanguageVersion.CSharp10, 93LanguageVersion = LanguageVersion.CSharp10, 116LanguageVersion = LanguageVersion.CSharp10, 138LanguageVersion = LanguageVersion.CSharp10, 159LanguageVersion = LanguageVersion.CSharp10, 180LanguageVersion = LanguageVersion.CSharp10, 212LanguageVersion = LanguageVersion.CSharp10, 236LanguageVersion = LanguageVersion.CSharp10, 264LanguageVersion = LanguageVersion.CSharp10, 294LanguageVersion = LanguageVersion.CSharp10, 323LanguageVersion = LanguageVersion.CSharp10, 351LanguageVersion = LanguageVersion.CSharp10, 381LanguageVersion = LanguageVersion.CSharp10, 411LanguageVersion = LanguageVersion.CSharp10, 452LanguageVersion = LanguageVersion.CSharp10, 486LanguageVersion = LanguageVersion.CSharp10, 520LanguageVersion = LanguageVersion.CSharp10, 568LanguageVersion = LanguageVersion.CSharp10, 616LanguageVersion = LanguageVersion.CSharp10, 666LanguageVersion = LanguageVersion.CSharp10, 720LanguageVersion = LanguageVersion.CSharp12, 775LanguageVersion = LanguageVersion.CSharp12, 830LanguageVersion = LanguageVersion.CSharp12, 850LanguageVersion = LanguageVersion.CSharp10, 871LanguageVersion = LanguageVersion.CSharp10, 899LanguageVersion = LanguageVersion.CSharp10, 920LanguageVersion = LanguageVersion.CSharp10, 948LanguageVersion = LanguageVersion.CSharp10, 969LanguageVersion = LanguageVersion.CSharp10, 999LanguageVersion = LanguageVersion.CSharp10, 1031LanguageVersion = LanguageVersion.CSharp10, 1060LanguageVersion = LanguageVersion.CSharp10, 1090LanguageVersion = LanguageVersion.CSharp10, 1162LanguageVersion = LanguageVersion.CSharp11, 1232LanguageVersion = LanguageVersion.CSharp11, 1304LanguageVersion = LanguageVersion.CSharp11, 1390LanguageVersion = LanguageVersion.CSharp11, 1462LanguageVersion = LanguageVersion.CSharp11, 1534LanguageVersion = LanguageVersion.CSharp11, 1555LanguageVersion = LanguageVersion.CSharp10, 1576LanguageVersion = LanguageVersion.CSharp10,

27private static readonly LanguageVersion CSharp9 = LanguageVersion.CSharp9; 2163LanguageVersion = LanguageVersion.CSharp9, 2207LanguageVersion = LanguageVersion.CSharp9, 2530LanguageVersion = LanguageVersion.CSharp9, 2587LanguageVersion = LanguageVersion.CSharp9,

154LanguageVersion = LanguageVersion.CSharp10,

361LanguageVersion = LanguageVersion.CSharp10,

224LanguageVersion = LanguageVersion.CSharp10

3664parseOptions: TestOptions.Regular.WithLanguageVersion(CodeAnalysis.CSharp.LanguageVersion.CSharp6)); 3694parseOptions: TestOptions.Regular.WithLanguageVersion(CodeAnalysis.CSharp.LanguageVersion.CSharp6)); 3724parseOptions: TestOptions.Regular.WithLanguageVersion(CodeAnalysis.CSharp.LanguageVersion.CSharp6)); 3754parseOptions: TestOptions.Regular.WithLanguageVersion(CodeAnalysis.CSharp.LanguageVersion.CSharp6));

66LanguageVersion = LanguageVersion.CSharp10, 93LanguageVersion = LanguageVersion.CSharp10, 958LanguageVersion = LanguageVersion.CSharp12,

8775parseOptions: TestOptions.Regular.WithLanguageVersion(CodeAnalysis.CSharp.LanguageVersion.CSharp6)); 8807parseOptions: TestOptions.Regular.WithLanguageVersion(CodeAnalysis.CSharp.LanguageVersion.CSharp6)); 8839parseOptions: TestOptions.Regular.WithLanguageVersion(CodeAnalysis.CSharp.LanguageVersion.CSharp6)); 8871parseOptions: TestOptions.Regular.WithLanguageVersion(CodeAnalysis.CSharp.LanguageVersion.CSharp6));

1836""", parseOptions: new CSharpParseOptions(LanguageVersion.CSharp7));

74LanguageVersion = LanguageVersion.CSharp12, 113LanguageVersion = LanguageVersion.CSharp12, 152LanguageVersion = LanguageVersion.CSharp12, 202LanguageVersion = LanguageVersion.CSharp9, 4060LanguageVersion = LanguageVersion.CSharp7_2, 4099LanguageVersion = LanguageVersion.CSharp8, 8318LanguageVersion = LanguageVersion.CSharp7_1, 10419LanguageVersion = LanguageVersion.CSharp9, 10545LanguageVersion = LanguageVersion.CSharp12, 10578LanguageVersion = LanguageVersion.CSharp12, 10611LanguageVersion = LanguageVersion.CSharp12, 10644LanguageVersion = LanguageVersion.CSharp12, 10681LanguageVersion = LanguageVersion.CSharp12, 10712LanguageVersion = LanguageVersion.CSharp9, 10776LanguageVersion = LanguageVersion.CSharp9, 10813LanguageVersion = LanguageVersion.CSharp9, 10850LanguageVersion = LanguageVersion.CSharp9, 11024LanguageVersion = LanguageVersion.CSharp5, 11071LanguageVersion = LanguageVersion.CSharp12, 11108LanguageVersion = LanguageVersion.CSharp12, 11145LanguageVersion = LanguageVersion.CSharp12, 11182LanguageVersion = LanguageVersion.CSharp12, 11217LanguageVersion = LanguageVersion.CSharp12, 11252LanguageVersion = LanguageVersion.CSharp12, 11294LanguageVersion = LanguageVersion.CSharp12, 11329LanguageVersion = LanguageVersion.CSharp12, 11364LanguageVersion = LanguageVersion.CSharp12, 11400LanguageVersion = LanguageVersion.CSharp12, 11436LanguageVersion = LanguageVersion.CSharp12, 11472LanguageVersion = LanguageVersion.CSharp12, 11508LanguageVersion = LanguageVersion.CSharp12, 11544LanguageVersion = LanguageVersion.CSharp12, 11580LanguageVersion = LanguageVersion.CSharp12, 11656LanguageVersion = LanguageVersion.CSharp12, 11732LanguageVersion = LanguageVersion.CSharp12, 11807LanguageVersion = LanguageVersion.CSharp7_3, 11846LanguageVersion = LanguageVersion.CSharp7_2, 11886LanguageVersion = LanguageVersion.CSharp12, 12035LanguageVersion = LanguageVersion.CSharp12, 12232LanguageVersion = LanguageVersion.CSharp9, 12277LanguageVersion = LanguageVersion.CSharp10,

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

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

26LanguageVersion = LanguageVersion.CSharp9 55LanguageVersion = LanguageVersion.CSharp8 84LanguageVersion = LanguageVersion.CSharp9,

30private static readonly ParseOptions CSharp72ParseOptions = CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp7_2); 31private static readonly ParseOptions CSharp8ParseOptions = CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp8);

138LanguageVersion = LanguageVersion.CSharp11, 162LanguageVersion = LanguageVersion.CSharp11, 186LanguageVersion = LanguageVersion.CSharp11, 206LanguageVersion = LanguageVersion.CSharp11, 239LanguageVersion = LanguageVersion.CSharp11, 261LanguageVersion = LanguageVersion.CSharp11, 288LanguageVersion = LanguageVersion.CSharp11, 307LanguageVersion = LanguageVersion.CSharp11, 334LanguageVersion = LanguageVersion.CSharp11, 353LanguageVersion = LanguageVersion.CSharp11, 379LanguageVersion = LanguageVersion.CSharp11, 412LanguageVersion = LanguageVersion.CSharp11, 434LanguageVersion = LanguageVersion.CSharp11, 454LanguageVersion = LanguageVersion.CSharp10, 475LanguageVersion = LanguageVersion.CSharp11, 495LanguageVersion = LanguageVersion.CSharp11, 521LanguageVersion = LanguageVersion.CSharp11, 547LanguageVersion = LanguageVersion.CSharp11, 571LanguageVersion = LanguageVersion.CSharp11, 595LanguageVersion = LanguageVersion.CSharp11, 621LanguageVersion = LanguageVersion.CSharp11, 645LanguageVersion = LanguageVersion.CSharp11,

25CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp7_3); 75await TestMissingInRegularAndScriptAsync(text, new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp12)));

458LanguageVersion = LanguageVersion.CSharp7, 999LanguageVersion = LanguageVersion.CSharp10, 1408LanguageVersion = LanguageVersion.CSharp12, 1442LanguageVersion = LanguageVersion.CSharp12, 1476LanguageVersion = LanguageVersion.CSharp12, 1534LanguageVersion = LanguageVersion.CSharp12, 1592LanguageVersion = LanguageVersion.CSharp12, 1650LanguageVersion = LanguageVersion.CSharp12, 1708LanguageVersion = LanguageVersion.CSharp12, 1728LanguageVersion = LanguageVersion.CSharp12, 1748LanguageVersion = LanguageVersion.CSharp12, 1768LanguageVersion = LanguageVersion.CSharp12, 1791LanguageVersion = LanguageVersion.CSharp12, 1814LanguageVersion = LanguageVersion.CSharp12, 1839LanguageVersion = LanguageVersion.CSharp12, 1880LanguageVersion = LanguageVersion.CSharp12, 1907LanguageVersion = LanguageVersion.CSharp12, 1925LanguageVersion = LanguageVersion.CSharp12, 1966LanguageVersion = LanguageVersion.CSharp12, 2007LanguageVersion = LanguageVersion.CSharp12, 2038LanguageVersion = LanguageVersion.CSharp12, 2058LanguageVersion = LanguageVersion.CSharp12, 2078LanguageVersion = LanguageVersion.CSharp12, 2105LanguageVersion = LanguageVersion.CSharp12, 2149LanguageVersion = LanguageVersion.CSharp12, 2176LanguageVersion = LanguageVersion.CSharp12, 2216LanguageVersion = LanguageVersion.CSharp12, 2264LanguageVersion = LanguageVersion.CSharp12, 2314LanguageVersion = LanguageVersion.CSharp12, 2364LanguageVersion = LanguageVersion.CSharp12, 2424LanguageVersion = LanguageVersion.CSharp12, 2460LanguageVersion = LanguageVersion.CSharp12, 2490LanguageVersion = LanguageVersion.CSharp12, 2520LanguageVersion = LanguageVersion.CSharp12, 2554LanguageVersion = LanguageVersion.CSharp12,

23private static Task TestMissingAsync(string testCode, LanguageVersion version = LanguageVersion.CSharp12) 26private static async Task TestAsync(string testCode, string fixedCode, LanguageVersion version = LanguageVersion.CSharp12) 46""", LanguageVersion.CSharp7_1); 65LanguageVersion.CSharp7_2); 450LanguageVersion.CSharp12);

56LanguageVersion = LanguageVersion.CSharp10 88LanguageVersion = LanguageVersion.CSharp10 122LanguageVersion = LanguageVersion.CSharp10 162LanguageVersion = LanguageVersion.CSharp10 198LanguageVersion = LanguageVersion.CSharp10 226LanguageVersion = LanguageVersion.CSharp10 260LanguageVersion = LanguageVersion.CSharp10 302LanguageVersion = LanguageVersion.CSharp10 341LanguageVersion = LanguageVersion.CSharp10, 350LanguageVersion = LanguageVersion.CSharp10, 379LanguageVersion = LanguageVersion.CSharp10

58LanguageVersion = LanguageVersion.CSharp10, 948LanguageVersion = LanguageVersion.CSharp10,

88initialMarkup, expectedMarkup, options: options, parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp10));

266LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 345LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 803LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 849LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8,

534LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 552LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 578LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 605LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 632LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 770LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 793LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 832LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 875LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 922LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8,

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

104LanguageVersion = LanguageVersion.CSharp8 138LanguageVersion = LanguageVersion.CSharp8, 172LanguageVersion = LanguageVersion.CSharp9, 211LanguageVersion = LanguageVersion.CSharp9,

5768LanguageVersion = LanguageVersion.CSharp7_1, 5793LanguageVersion = LanguageVersion.CSharp7_1, 5818LanguageVersion = LanguageVersion.CSharp7_1, 5858LanguageVersion = LanguageVersion.CSharp7_1, 5909LanguageVersion = LanguageVersion.CSharp7_1, 5934LanguageVersion = LanguageVersion.CSharp7_1, 5959LanguageVersion = LanguageVersion.CSharp7_1, 5999LanguageVersion = LanguageVersion.CSharp7_1, 6039LanguageVersion = LanguageVersion.CSharp7_1, 6060LanguageVersion = LanguageVersion.CSharp7_1, 6081LanguageVersion = LanguageVersion.CSharp7_1, 6102LanguageVersion = LanguageVersion.CSharp7_1, 6134LanguageVersion = LanguageVersion.CSharp7_1, 6157LanguageVersion = LanguageVersion.CSharp10, 6180LanguageVersion = LanguageVersion.CSharp10, 8229LanguageVersion = LanguageVersion.CSharp9, 8301LanguageVersion = LanguageVersion.CSharp8 8328LanguageVersion = LanguageVersion.CSharp9, 8349LanguageVersion = LanguageVersion.CSharp8 8376LanguageVersion = LanguageVersion.CSharp9, 8397LanguageVersion = LanguageVersion.CSharp8, 8424LanguageVersion = LanguageVersion.CSharp9, 8496LanguageVersion = LanguageVersion.CSharp8 8523LanguageVersion = LanguageVersion.CSharp9, 8544LanguageVersion = LanguageVersion.CSharp8 8571LanguageVersion = LanguageVersion.CSharp9, 8592LanguageVersion = LanguageVersion.CSharp8 8619LanguageVersion = LanguageVersion.CSharp9, 8797LanguageVersion = LanguageVersion.CSharp9, 9622LanguageVersion = LanguageVersion.CSharp9 9643LanguageVersion = LanguageVersion.CSharp9 9673LanguageVersion = LanguageVersion.CSharp9 9694LanguageVersion = LanguageVersion.CSharp9 9715LanguageVersion = LanguageVersion.CSharp9 9800LanguageVersion = LanguageVersion.CSharp9 9823LanguageVersion = LanguageVersion.CSharp9 9846LanguageVersion = LanguageVersion.CSharp9 9875LanguageVersion = LanguageVersion.CSharp9 9905LanguageVersion = LanguageVersion.CSharp9 9923LanguageVersion = LanguageVersion.CSharp9, 9946LanguageVersion = LanguageVersion.CSharp9, 9982LanguageVersion = LanguageVersion.CSharp9, 10010LanguageVersion = LanguageVersion.CSharp9, 10033LanguageVersion = LanguageVersion.CSharp9, 10055LanguageVersion = LanguageVersion.CSharp9, 10890LanguageVersion = LanguageVersion.CSharp9, 10929LanguageVersion = LanguageVersion.CSharp9, 11629LanguageVersion = LanguageVersion.CSharp10, 12067public async Task DoNotRemoveMethodGroupToSpecificDelegateType(LanguageVersion version) 12123LanguageVersion = LanguageVersion.CSharp10, 12159LanguageVersion = LanguageVersion.CSharp10, 12183LanguageVersion = LanguageVersion.CSharp10, 12205LanguageVersion = LanguageVersion.CSharp10, 12226LanguageVersion = LanguageVersion.CSharp10, 12247LanguageVersion = LanguageVersion.CSharp10, 12270LanguageVersion = LanguageVersion.CSharp10, 12292LanguageVersion = LanguageVersion.CSharp10, 12308LanguageVersion = LanguageVersion.CSharp10, 12330LanguageVersion = LanguageVersion.CSharp10, 12354LanguageVersion = LanguageVersion.CSharp10, 12373LanguageVersion = LanguageVersion.CSharp10, 12392LanguageVersion = LanguageVersion.CSharp10, 12416LanguageVersion = LanguageVersion.CSharp10, 12439LanguageVersion = LanguageVersion.CSharp10, 12470LanguageVersion = LanguageVersion.CSharp10, 12520LanguageVersion = LanguageVersion.CSharp10, 12561LanguageVersion = LanguageVersion.CSharp10, 12588LanguageVersion = LanguageVersion.CSharp10, 12635LanguageVersion = LanguageVersion.CSharp10, 12680LanguageVersion = LanguageVersion.CSharp10, 12699LanguageVersion = LanguageVersion.CSharp10, 12730LanguageVersion = LanguageVersion.CSharp10, 12761LanguageVersion = LanguageVersion.CSharp10, 12792LanguageVersion = LanguageVersion.CSharp10, 12823LanguageVersion = LanguageVersion.CSharp10, 12854LanguageVersion = LanguageVersion.CSharp10, 12885LanguageVersion = LanguageVersion.CSharp10, 12904LanguageVersion = LanguageVersion.CSharp10, 12930LanguageVersion = LanguageVersion.CSharp10, 12966LanguageVersion = LanguageVersion.CSharp10, 13001LanguageVersion = LanguageVersion.CSharp10, 13020LanguageVersion = LanguageVersion.CSharp10, 13075LanguageVersion = LanguageVersion.CSharp10, 13578LanguageVersion = LanguageVersion.CSharp12, 13596LanguageVersion = LanguageVersion.CSharp12, 13621LanguageVersion = LanguageVersion.CSharp12, 13648LanguageVersion = LanguageVersion.CSharp12, 13681LanguageVersion = LanguageVersion.CSharp12, 13704LanguageVersion = LanguageVersion.CSharp12, 13734LanguageVersion = LanguageVersion.CSharp12, 13778LanguageVersion = LanguageVersion.CSharp12, 13815LanguageVersion = LanguageVersion.CSharp12, 13893LanguageVersion = LanguageVersion.CSharp12, 13933LanguageVersion = LanguageVersion.CSharp12, 13954LanguageVersion = LanguageVersion.CSharp12, 13975LanguageVersion = LanguageVersion.CSharp12, 13994LanguageVersion = LanguageVersion.CSharp12, 14013LanguageVersion = LanguageVersion.CSharp12, 14032LanguageVersion = LanguageVersion.CSharp12, 14053LanguageVersion = LanguageVersion.CSharp12, 14074LanguageVersion = LanguageVersion.CSharp12, 14095LanguageVersion = LanguageVersion.CSharp12, 14118LanguageVersion = LanguageVersion.CSharp12,

54LanguageVersion = LanguageVersion.CSharp9, 76LanguageVersion = LanguageVersion.CSharp8, 109LanguageVersion = LanguageVersion.CSharp9, 136LanguageVersion = LanguageVersion.CSharp9, 169LanguageVersion = LanguageVersion.CSharp9, 202LanguageVersion = LanguageVersion.CSharp9, 235LanguageVersion = LanguageVersion.CSharp9, 256LanguageVersion = LanguageVersion.CSharp9, 289LanguageVersion = LanguageVersion.CSharp9, 328LanguageVersion = LanguageVersion.CSharp9, 352LanguageVersion = LanguageVersion.CSharp9, 377LanguageVersion = LanguageVersion.CSharp9, 430LanguageVersion = LanguageVersion.CSharp9, 461LanguageVersion = LanguageVersion.CSharp9, 493LanguageVersion = LanguageVersion.CSharp9, 528LanguageVersion = LanguageVersion.CSharp9, 563LanguageVersion = LanguageVersion.CSharp9, 601LanguageVersion = LanguageVersion.CSharp9,

480LanguageVersion = LanguageVersion.CSharp10, 633LanguageVersion = LanguageVersion.CSharp10, 1030LanguageVersion = LanguageVersion.CSharp5, 1111LanguageVersion = LanguageVersion.CSharp5, 2105LanguageVersion = LanguageVersion.CSharp10,

28LanguageVersion version = LanguageVersion.CSharp12, 45LanguageVersion version = LanguageVersion.CSharp12, 66""", LanguageVersion.CSharp10); 123LanguageVersion = LanguageVersion.CSharp12,

919LanguageVersion = LanguageVersion.CSharp9, 942LanguageVersion = LanguageVersion.CSharp9, 967LanguageVersion = LanguageVersion.CSharp9, 998LanguageVersion = LanguageVersion.CSharp9, 1026LanguageVersion = LanguageVersion.CSharp9, 1053LanguageVersion = LanguageVersion.CSharp9, 1078LanguageVersion = LanguageVersion.CSharp9,

446LanguageVersion = LanguageVersion.CSharp9, 474LanguageVersion = LanguageVersion.CSharp9, 493LanguageVersion = LanguageVersion.CSharp9, 520LanguageVersion = LanguageVersion.CSharp9, 1176LanguageVersion = LanguageVersion.CSharp9, 3124LanguageVersion = LanguageVersion.CSharp9, 3270LanguageVersion = LanguageVersion.CSharp13, 3368LanguageVersion = LanguageVersion.CSharp13, 3402LanguageVersion = LanguageVersion.CSharp13, 3425LanguageVersion = LanguageVersion.CSharp13, 3449LanguageVersion = LanguageVersion.CSharp13, 3480LanguageVersion = LanguageVersion.CSharp13, 3529LanguageVersion = LanguageVersion.CSharp13,

1387""", parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8));

961LanguageVersion = LanguageVersion.CSharp6, 2728""", options: PreferDiscard, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 2762""", options: PreferDiscard, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp9)); 2767[CombinatorialValues(LanguageVersion.CSharp8, LanguageVersion.CSharp9)] LanguageVersion languageVersion) 2843LanguageVersion = LanguageVersion.CSharp9, 3002""", options: PreferDiscard, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 3008[CombinatorialValues(LanguageVersion.CSharp8, LanguageVersion.CSharp9)] LanguageVersion languageVersion) 3071LanguageVersion = LanguageVersion.CSharp9, 3114""", options: PreferDiscard, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 3120[CombinatorialValues(LanguageVersion.CSharp8, LanguageVersion.CSharp9)] LanguageVersion languageVersion) 3208LanguageVersion = LanguageVersion.CSharp9, 3251""", optionName: optionName, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 3288""", optionName: optionName, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp9)); 3374LanguageVersion = LanguageVersion.CSharp9, 5466""", optionName, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 7769""", PreferDiscard, new CSharpParseOptions(LanguageVersion.CSharp9)); 8229""", parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 8245""", parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 8269""", optionName: nameof(PreferDiscard), parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 8293""", optionName: nameof(PreferDiscard), parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 8313""", optionName: nameof(PreferDiscard), parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 8464""", options: PreferDiscard, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 8470[CombinatorialValues(LanguageVersion.CSharp8, LanguageVersion.CSharp9)] LanguageVersion languageVersion) 8551LanguageVersion = LanguageVersion.CSharp9, 8878""", options: PreferUnusedLocal, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp7_3)); 8916""", options: PreferUnusedLocal, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 8938parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9)); 8961parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9)); 9118""", new TestParameters(options: PreferDiscard, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8))); 9124[CombinatorialValues(LanguageVersion.CSharp8, LanguageVersion.CSharp9)] LanguageVersion languageVersion) 9156""", new TestParameters(options: PreferDiscard, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8))); 9182""", options: PreferDiscard, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 9217LanguageVersion = LanguageVersion.CSharp9, 9228[CombinatorialValues(LanguageVersion.CSharp8, LanguageVersion.CSharp9)] LanguageVersion languageVersion) 9256[CombinatorialValues(LanguageVersion.CSharp8, LanguageVersion.CSharp9)] LanguageVersion languageVersion) 9300""", options: PreferDiscard, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 9339LanguageVersion = LanguageVersion.CSharp9, 9712LanguageVersion = LanguageVersion.CSharp9, 9750LanguageVersion = LanguageVersion.CSharp9, 9791LanguageVersion = LanguageVersion.CSharp9, 9832LanguageVersion = LanguageVersion.CSharp9, 9873LanguageVersion = LanguageVersion.CSharp9, 9914LanguageVersion = LanguageVersion.CSharp9, 9955LanguageVersion = LanguageVersion.CSharp11, 9997LanguageVersion = LanguageVersion.CSharp11, 10039LanguageVersion = LanguageVersion.CSharp11, 10062LanguageVersion = LanguageVersion.CSharp12,

83parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp6));

24private static readonly ImmutableArray<LanguageVersion> s_csharp7_1above = 25[LanguageVersion.CSharp7_1, LanguageVersion.Latest]; 27private static readonly ImmutableArray<LanguageVersion> s_csharp7below = 29LanguageVersion.CSharp7, 30LanguageVersion.CSharp6, 31LanguageVersion.CSharp5, 32LanguageVersion.CSharp4, 33LanguageVersion.CSharp3, 34LanguageVersion.CSharp2, 35LanguageVersion.CSharp1, 38private async Task TestWithLanguageVersionsAsync(string initialMarkup, string expectedMarkup, ImmutableArray<LanguageVersion> versions) 40foreach (var version in versions) 47private async Task TestMissingWithLanguageVersionsAsync(string initialMarkup, ImmutableArray<LanguageVersion> versions) 49foreach (var version in versions) 808""", [LanguageVersion.CSharp7_1, LanguageVersion.CSharp10, LanguageVersion.CSharp11, LanguageVersion.Latest]); 863""", [LanguageVersion.CSharp7_1, LanguageVersion.CSharp10, LanguageVersion.CSharp11, LanguageVersion.Latest]); 953""", [LanguageVersion.CSharp7_1]); 979""", [LanguageVersion.Latest]);

27LanguageVersion = LanguageVersion.CSharp10 38LanguageVersion = LanguageVersion.CSharp10 49LanguageVersion = LanguageVersion.CSharp10 66LanguageVersion = LanguageVersion.CSharp10 83LanguageVersion = LanguageVersion.CSharp10 100LanguageVersion = LanguageVersion.CSharp10 115LanguageVersion = LanguageVersion.CSharp10 136LanguageVersion = LanguageVersion.CSharp10 161LanguageVersion = LanguageVersion.CSharp10 182LanguageVersion = LanguageVersion.CSharp10

33LanguageVersion expected, 77LanguageVersion.CSharp8, 78new CSharpParseOptions(LanguageVersion.CSharp7_2)); 91LanguageVersion.CSharp8, 92new CSharpParseOptions(LanguageVersion.CSharp7)); 108LanguageVersion.CSharp7, 109new CSharpParseOptions(LanguageVersion.CSharp6)); 125LanguageVersion.CSharp6, 126new CSharpParseOptions(LanguageVersion.CSharp5)); 142LanguageVersion.CSharp5, 143new CSharpParseOptions(LanguageVersion.CSharp4)); 153#error version:[|{{LanguageVersion.Latest.MapSpecifiedToEffectiveVersion().ToDisplayString()}}|] 156LanguageVersion.Latest.MapSpecifiedToEffectiveVersion(), 157new CSharpParseOptions(LanguageVersion.CSharp7)); 190LanguageVersion.CSharp7_1, 191new CSharpParseOptions(LanguageVersion.CSharp7)); 201#error version:[|{{LanguageVersion.Latest.MapSpecifiedToEffectiveVersion().ToDisplayString()}}|] 204LanguageVersion.Latest.MapSpecifiedToEffectiveVersion(), 205new CSharpParseOptions(LanguageVersion.CSharp7_1)); 218LanguageVersion.CSharp7_1, 219new CSharpParseOptions(LanguageVersion.CSharp7)); 235LanguageVersion.CSharp7_2, 236new CSharpParseOptions(LanguageVersion.CSharp7_1)); 254LanguageVersion.CSharp7_1, 255new CSharpParseOptions(LanguageVersion.CSharp7)); 266#error version:[|{{LanguageVersion.Latest.MapSpecifiedToEffectiveVersion().ToDisplayString()}}|] 269LanguageVersion.Latest.MapSpecifiedToEffectiveVersion(), 270new CSharpParseOptions(LanguageVersion.CSharp7_2)); 285LanguageVersion.CSharp7_3, 286new CSharpParseOptions(LanguageVersion.CSharp7_2)); 298LanguageVersion.CSharp7_3, 299new CSharpParseOptions(LanguageVersion.CSharp7_2)); 311LanguageVersion.CSharp7_3, 312new CSharpParseOptions(LanguageVersion.CSharp7_2)); 324LanguageVersion.CSharp7_3, 325new CSharpParseOptions(LanguageVersion.CSharp7_2)); 337#error version:[|{{LanguageVersion.Latest.MapSpecifiedToEffectiveVersion().ToDisplayString()}}|] 340LanguageVersion.Latest.MapSpecifiedToEffectiveVersion(), 341new CSharpParseOptions(LanguageVersion.CSharp7_3)); 351#error version:[|{{LanguageVersion.CSharp8.ToDisplayString()}}|] 354LanguageVersion.Latest.MapSpecifiedToEffectiveVersion(), 355new CSharpParseOptions(LanguageVersion.CSharp7_3)); 371expected: LanguageVersion.CSharp8, 372new CSharpParseOptions(LanguageVersion.CSharp7_3)); 401LanguageVersion.CSharp7, 428LanguageVersion.CSharp8, 459LanguageVersion.CSharp8, 485LanguageVersion.CSharp9, 610var defaultVersion = LanguageVersion.Default.MapSpecifiedToEffectiveVersion().ToDisplayString(); 664var defaultEffectiveVersion = LanguageVersion.Default.MapSpecifiedToEffectiveVersion().ToDisplayString(); 702LanguageVersion.CSharp9, 703new CSharpParseOptions(LanguageVersion.CSharp8)); 715LanguageVersion.CSharp7_3, 716new CSharpParseOptions(LanguageVersion.CSharp7)); 748LanguageVersion.CSharp7_3, 749new CSharpParseOptions(LanguageVersion.CSharp7)); 777LanguageVersion.CSharp7_3, 778new CSharpParseOptions(LanguageVersion.CSharp7)); 811LanguageVersion.CSharp7_3, 812new CSharpParseOptions(LanguageVersion.CSharp7)); 848expected: LanguageVersion.CSharp8, 849new CSharpParseOptions(LanguageVersion.CSharp7_3)); 877new CSharpParseOptions(LanguageVersion.CSharp7_3)); 890LanguageVersion.CSharp8, 891new CSharpParseOptions(LanguageVersion.CSharp7_3)); 904LanguageVersion.CSharp8, 905new CSharpParseOptions(LanguageVersion.CSharp7_3)); 918LanguageVersion.CSharp8, 919new CSharpParseOptions(LanguageVersion.CSharp7_3)); 931LanguageVersion.CSharp8, 932new CSharpParseOptions(LanguageVersion.CSharp7_3)); 964LanguageVersion.CSharp8, 965new CSharpParseOptions(LanguageVersion.CSharp7_3)); 993LanguageVersion.CSharp8, 994new CSharpParseOptions(LanguageVersion.CSharp7_3)); 1027LanguageVersion.CSharp8, 1028new CSharpParseOptions(LanguageVersion.CSharp7_3)); 1064expected: LanguageVersion.CSharp9, 1065new CSharpParseOptions(LanguageVersion.CSharp8)); 1090expected: LanguageVersion.CSharp10, 1091new CSharpParseOptions(LanguageVersion.CSharp9)); 1101LanguageVersion.CSharp12, 1102new CSharpParseOptions(LanguageVersion.CSharp11)); 1112LanguageVersion.CSharp12, 1113new CSharpParseOptions(LanguageVersion.CSharp11)); 1123LanguageVersion.CSharp12, 1124new CSharpParseOptions(LanguageVersion.CSharp11)); 1134LanguageVersion.CSharp12, 1135new CSharpParseOptions(LanguageVersion.CSharp11)); 1145LanguageVersion.CSharp12, 1146new CSharpParseOptions(LanguageVersion.CSharp11)); 1156LanguageVersion.CSharp12, 1157new CSharpParseOptions(LanguageVersion.CSharp11)); 1169LanguageVersion.CSharp9, 1170new CSharpParseOptions(LanguageVersion.CSharp8)); 1179LanguageVersion.CSharp10, 1180new CSharpParseOptions(LanguageVersion.CSharp9)); 1198expected: LanguageVersion.CSharp10, 1199new CSharpParseOptions(LanguageVersion.CSharp9)); 1214expected: LanguageVersion.CSharp9, 1215new CSharpParseOptions(LanguageVersion.CSharp8)); 1232expected: LanguageVersion.CSharp11, 1233new CSharpParseOptions(LanguageVersion.CSharp8)); 1246expected: LanguageVersion.CSharp11, 1247new CSharpParseOptions(LanguageVersion.CSharp10)); 1260expected: LanguageVersion.CSharp11, 1261new CSharpParseOptions(LanguageVersion.CSharp10)); 1274expected: LanguageVersion.CSharp11, 1275new CSharpParseOptions(LanguageVersion.CSharp10)); 1291expected: LanguageVersion.CSharp12, 1292new CSharpParseOptions(LanguageVersion.CSharp11));

25private readonly ParseOptions CSharp12 = CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp12); 449CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp5)); 469""", new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp5))); 515""", new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp5)));

17private readonly ParseOptions CSharp13 = CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp13); 18private readonly ParseOptions Preview = CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.Preview);

181LanguageVersion = LanguageVersion.CSharp9, 251LanguageVersion = LanguageVersion.CSharp9, 448LanguageVersion = LanguageVersion.CSharp9,

35LanguageVersion = LanguageVersion.CSharp11, 56LanguageVersion = LanguageVersion.CSharp12, 77LanguageVersion = LanguageVersion.CSharp12, 98LanguageVersion = LanguageVersion.CSharp12, 123LanguageVersion = LanguageVersion.CSharp12, 148LanguageVersion = LanguageVersion.CSharp12, 169LanguageVersion = LanguageVersion.CSharp12, 190LanguageVersion = LanguageVersion.CSharp12, 205LanguageVersion = LanguageVersion.CSharp12, 230LanguageVersion = LanguageVersion.CSharp12, 251LanguageVersion = LanguageVersion.CSharp12, 278LanguageVersion = LanguageVersion.CSharp12, 299LanguageVersion = LanguageVersion.CSharp12, 320LanguageVersion = LanguageVersion.CSharp12, 341LanguageVersion = LanguageVersion.CSharp12, 356LanguageVersion = LanguageVersion.CSharp12, 371LanguageVersion = LanguageVersion.CSharp12, 386LanguageVersion = LanguageVersion.CSharp12, 407LanguageVersion = LanguageVersion.CSharp12, 422LanguageVersion = LanguageVersion.CSharp12, 447LanguageVersion = LanguageVersion.CSharp12, 474LanguageVersion = LanguageVersion.CSharp12, 489LanguageVersion = LanguageVersion.CSharp12, 510LanguageVersion = LanguageVersion.CSharp12, 529LanguageVersion = LanguageVersion.CSharp12,

84LanguageVersion = LanguageVersion.CSharp11, 107LanguageVersion = LanguageVersion.CSharp12, 141LanguageVersion = LanguageVersion.CSharp12, 175LanguageVersion = LanguageVersion.CSharp12, 199LanguageVersion = LanguageVersion.CSharp12, 237LanguageVersion = LanguageVersion.CSharp12, 275LanguageVersion = LanguageVersion.CSharp12, 313LanguageVersion = LanguageVersion.CSharp12, 351LanguageVersion = LanguageVersion.CSharp12, 377LanguageVersion = LanguageVersion.CSharp12, 401LanguageVersion = LanguageVersion.CSharp12, 442LanguageVersion = LanguageVersion.CSharp12, 485LanguageVersion = LanguageVersion.CSharp12, 515LanguageVersion = LanguageVersion.CSharp12, 545LanguageVersion = LanguageVersion.CSharp12, 592LanguageVersion = LanguageVersion.CSharp12, 639LanguageVersion = LanguageVersion.CSharp12, 686LanguageVersion = LanguageVersion.CSharp12, 726LanguageVersion = LanguageVersion.CSharp12, 768LanguageVersion = LanguageVersion.CSharp12, 810LanguageVersion = LanguageVersion.CSharp12, 856LanguageVersion = LanguageVersion.CSharp12, 894LanguageVersion = LanguageVersion.CSharp12, 932LanguageVersion = LanguageVersion.CSharp12, 970LanguageVersion = LanguageVersion.CSharp12, 995LanguageVersion = LanguageVersion.CSharp12, 1034LanguageVersion = LanguageVersion.CSharp12, 1072LanguageVersion = LanguageVersion.CSharp12, 1110LanguageVersion = LanguageVersion.CSharp12, 1148LanguageVersion = LanguageVersion.CSharp12, 1186LanguageVersion = LanguageVersion.CSharp12, 1212LanguageVersion = LanguageVersion.CSharp12, 1238LanguageVersion = LanguageVersion.CSharp12, 1278LanguageVersion = LanguageVersion.CSharp12, 1317LanguageVersion = LanguageVersion.CSharp12, 1360LanguageVersion = LanguageVersion.CSharp12, 1383LanguageVersion = LanguageVersion.CSharp12, 1405LanguageVersion = LanguageVersion.CSharp12, 1442LanguageVersion = LanguageVersion.CSharp12, 1482LanguageVersion = LanguageVersion.CSharp12, 1521LanguageVersion = LanguageVersion.CSharp12, 1559LanguageVersion = LanguageVersion.CSharp12, 1584LanguageVersion = LanguageVersion.CSharp12, 1625LanguageVersion = LanguageVersion.CSharp12,

77LanguageVersion = LanguageVersion.CSharp11, 99LanguageVersion = LanguageVersion.CSharp12, 121LanguageVersion = LanguageVersion.CSharp12, 149LanguageVersion = LanguageVersion.CSharp12, 170LanguageVersion = LanguageVersion.CSharp12, 192LanguageVersion = LanguageVersion.CSharp12, 214LanguageVersion = LanguageVersion.CSharp12, 236LanguageVersion = LanguageVersion.CSharp12, 258LanguageVersion = LanguageVersion.CSharp12, 280LanguageVersion = LanguageVersion.CSharp12, 296LanguageVersion = LanguageVersion.CSharp12, 318LanguageVersion = LanguageVersion.CSharp12, 340LanguageVersion = LanguageVersion.CSharp12, 362LanguageVersion = LanguageVersion.CSharp12, 378LanguageVersion = LanguageVersion.CSharp12, 394LanguageVersion = LanguageVersion.CSharp12, 416LanguageVersion = LanguageVersion.CSharp12, 438LanguageVersion = LanguageVersion.CSharp12, 460LanguageVersion = LanguageVersion.CSharp12, 476LanguageVersion = LanguageVersion.CSharp12, 508LanguageVersion = LanguageVersion.CSharp12, 530LanguageVersion = LanguageVersion.CSharp12, 552LanguageVersion = LanguageVersion.CSharp12, 574LanguageVersion = LanguageVersion.CSharp12, 596LanguageVersion = LanguageVersion.CSharp12, 614LanguageVersion = LanguageVersion.CSharp12, 632LanguageVersion = LanguageVersion.CSharp12, 658LanguageVersion = LanguageVersion.CSharp12, 684LanguageVersion = LanguageVersion.CSharp12, 710LanguageVersion = LanguageVersion.CSharp12, 736LanguageVersion = LanguageVersion.CSharp12, 762LanguageVersion = LanguageVersion.CSharp12, 788LanguageVersion = LanguageVersion.CSharp12, 807LanguageVersion = LanguageVersion.CSharp12, 829LanguageVersion = LanguageVersion.CSharp12, 853LanguageVersion = LanguageVersion.CSharp12, 884LanguageVersion = LanguageVersion.CSharp12, 906LanguageVersion = LanguageVersion.CSharp12, 940LanguageVersion = LanguageVersion.CSharp12, 962LanguageVersion = LanguageVersion.CSharp12, 996LanguageVersion = LanguageVersion.CSharp12, 1012LanguageVersion = LanguageVersion.CSharp12, 1040LanguageVersion = LanguageVersion.CSharp12, 1078LanguageVersion = LanguageVersion.CSharp12, 1115LanguageVersion = LanguageVersion.CSharp12, 1156LanguageVersion = LanguageVersion.CSharp12, 1181LanguageVersion = LanguageVersion.CSharp12, 1206LanguageVersion = LanguageVersion.CSharp12, 1240LanguageVersion = LanguageVersion.CSharp12, 1266LanguageVersion = LanguageVersion.CSharp12, 1284LanguageVersion = LanguageVersion.CSharp12, 1324LanguageVersion = LanguageVersion.CSharp12,

51LanguageVersion = LanguageVersion.CSharp12, 82LanguageVersion = LanguageVersion.CSharp12, 113LanguageVersion = LanguageVersion.CSharp12, 142LanguageVersion = LanguageVersion.CSharp12, 161LanguageVersion = LanguageVersion.CSharp12, 198LanguageVersion = LanguageVersion.CSharp12, 219LanguageVersion = LanguageVersion.CSharp12, 254LanguageVersion = LanguageVersion.CSharp12, 287LanguageVersion = LanguageVersion.CSharp12, 320LanguageVersion = LanguageVersion.CSharp12, 353LanguageVersion = LanguageVersion.CSharp12, 386LanguageVersion = LanguageVersion.CSharp12, 417LanguageVersion = LanguageVersion.CSharp12, 438LanguageVersion = LanguageVersion.CSharp12, 471LanguageVersion = LanguageVersion.CSharp12, 496LanguageVersion = LanguageVersion.CSharp12, 553LanguageVersion = LanguageVersion.CSharp12, 621LanguageVersion = LanguageVersion.CSharp12, 689LanguageVersion = LanguageVersion.CSharp12, 721LanguageVersion = LanguageVersion.CSharp12, 742LanguageVersion = LanguageVersion.CSharp12, 776LanguageVersion = LanguageVersion.CSharp12, 798LanguageVersion = LanguageVersion.CSharp12, 832LanguageVersion = LanguageVersion.CSharp12, 865LanguageVersion = LanguageVersion.CSharp12, 900LanguageVersion = LanguageVersion.CSharp12, 951LanguageVersion = LanguageVersion.CSharp12, 989LanguageVersion = LanguageVersion.CSharp12, 1041LanguageVersion = LanguageVersion.CSharp12, 1094LanguageVersion = LanguageVersion.CSharp12, 1149LanguageVersion = LanguageVersion.CSharp12, 1187LanguageVersion = LanguageVersion.CSharp12, 1244LanguageVersion = LanguageVersion.CSharp12, 1268LanguageVersion = LanguageVersion.CSharp12, 1288LanguageVersion = LanguageVersion.CSharp12, 1315LanguageVersion = LanguageVersion.CSharp12, 1352LanguageVersion = LanguageVersion.CSharp12, 1382LanguageVersion = LanguageVersion.CSharp12, 1412LanguageVersion = LanguageVersion.CSharp12, 1442LanguageVersion = LanguageVersion.CSharp12, 1472LanguageVersion = LanguageVersion.CSharp12, 1508LanguageVersion = LanguageVersion.CSharp12, 1548LanguageVersion = LanguageVersion.CSharp12, 1586LanguageVersion = LanguageVersion.CSharp12, 1609LanguageVersion = LanguageVersion.CSharp12, 1632LanguageVersion = LanguageVersion.CSharp12, 1669LanguageVersion = LanguageVersion.CSharp12, 1694LanguageVersion = LanguageVersion.CSharp12, 1716LanguageVersion = LanguageVersion.CSharp12,

39LanguageVersion = LanguageVersion.CSharp11, 73LanguageVersion = LanguageVersion.CSharp12, 107LanguageVersion = LanguageVersion.CSharp12, 141LanguageVersion = LanguageVersion.CSharp12, 164LanguageVersion = LanguageVersion.CSharp12, 198LanguageVersion = LanguageVersion.CSharp12, 232LanguageVersion = LanguageVersion.CSharp12, 254LanguageVersion = LanguageVersion.CSharp12, 290LanguageVersion = LanguageVersion.CSharp12, 326LanguageVersion = LanguageVersion.CSharp12, 362LanguageVersion = LanguageVersion.CSharp12, 398LanguageVersion = LanguageVersion.CSharp12, 434LanguageVersion = LanguageVersion.CSharp12, 470LanguageVersion = LanguageVersion.CSharp12, 506LanguageVersion = LanguageVersion.CSharp12, 542LanguageVersion = LanguageVersion.CSharp12, 578LanguageVersion = LanguageVersion.CSharp12, 614LanguageVersion = LanguageVersion.CSharp12, 650LanguageVersion = LanguageVersion.CSharp12, 686LanguageVersion = LanguageVersion.CSharp12, 709LanguageVersion = LanguageVersion.CSharp12, 732LanguageVersion = LanguageVersion.CSharp12, 755LanguageVersion = LanguageVersion.CSharp12, 795LanguageVersion = LanguageVersion.CSharp12, 831LanguageVersion = LanguageVersion.CSharp12, 854LanguageVersion = LanguageVersion.CSharp12, 898LanguageVersion = LanguageVersion.CSharp12, 934LanguageVersion = LanguageVersion.CSharp12, 957LanguageVersion = LanguageVersion.CSharp12, 993LanguageVersion = LanguageVersion.CSharp12, 1029LanguageVersion = LanguageVersion.CSharp12, 1071LanguageVersion = LanguageVersion.CSharp12, 1118LanguageVersion = LanguageVersion.CSharp12, 1160LanguageVersion = LanguageVersion.CSharp12, 1207LanguageVersion = LanguageVersion.CSharp12, 1233LanguageVersion = LanguageVersion.CSharp12, 1259LanguageVersion = LanguageVersion.CSharp12, 1285LanguageVersion = LanguageVersion.CSharp12, 1310LanguageVersion = LanguageVersion.CSharp12, 1335LanguageVersion = LanguageVersion.CSharp12, 1371LanguageVersion = LanguageVersion.CSharp12, 1407LanguageVersion = LanguageVersion.CSharp12, 1443LanguageVersion = LanguageVersion.CSharp12, 1481LanguageVersion = LanguageVersion.CSharp12, 1519LanguageVersion = LanguageVersion.CSharp12, 1543LanguageVersion = LanguageVersion.CSharp12, 1570LanguageVersion = LanguageVersion.CSharp12, 1608LanguageVersion = LanguageVersion.CSharp12, 1646LanguageVersion = LanguageVersion.CSharp12, 1684LanguageVersion = LanguageVersion.CSharp12, 1728LanguageVersion = LanguageVersion.CSharp12, 1772LanguageVersion = LanguageVersion.CSharp12, 1810LanguageVersion = LanguageVersion.CSharp12, 1848LanguageVersion = LanguageVersion.CSharp12, 1894LanguageVersion = LanguageVersion.CSharp12, 1939LanguageVersion = LanguageVersion.CSharp12, 1973LanguageVersion = LanguageVersion.CSharp12, 1995LanguageVersion = LanguageVersion.CSharp12, 2031LanguageVersion = LanguageVersion.CSharp12, 2079LanguageVersion = LanguageVersion.CSharp12, 2114LanguageVersion = LanguageVersion.CSharp12, 2149LanguageVersion = LanguageVersion.CSharp12, 2183LanguageVersion = LanguageVersion.CSharp12, 2206LanguageVersion = LanguageVersion.CSharp12, 2242LanguageVersion = LanguageVersion.CSharp12, 2265LanguageVersion = LanguageVersion.CSharp12, 2301LanguageVersion = LanguageVersion.CSharp12, 2324LanguageVersion = LanguageVersion.CSharp12, 2360LanguageVersion = LanguageVersion.CSharp12, 2398LanguageVersion = LanguageVersion.CSharp12, 2432LanguageVersion = LanguageVersion.CSharp12, 2466LanguageVersion = LanguageVersion.CSharp12, 2501LanguageVersion = LanguageVersion.CSharp12, 2536LanguageVersion = LanguageVersion.CSharp12, 2573LanguageVersion = LanguageVersion.CSharp12, 2610LanguageVersion = LanguageVersion.CSharp12, 2650LanguageVersion = LanguageVersion.CSharp12, 2674LanguageVersion = LanguageVersion.CSharp12, 2698LanguageVersion = LanguageVersion.CSharp12, 2726LanguageVersion = LanguageVersion.CSharp12, 2777LanguageVersion = LanguageVersion.CSharp12, 2810LanguageVersion = LanguageVersion.CSharp12, 2832LanguageVersion = LanguageVersion.CSharp12, 2872LanguageVersion = LanguageVersion.CSharp12, 2908LanguageVersion = LanguageVersion.CSharp12, 2935LanguageVersion = LanguageVersion.CSharp12, 2978LanguageVersion = LanguageVersion.CSharp12, 3012LanguageVersion = LanguageVersion.CSharp12, 3046LanguageVersion = LanguageVersion.CSharp12, 3080LanguageVersion = LanguageVersion.CSharp12, 3114LanguageVersion = LanguageVersion.CSharp12, 3150LanguageVersion = LanguageVersion.CSharp12,

55LanguageVersion = LanguageVersion.CSharp12, 93LanguageVersion = LanguageVersion.CSharp12,

38LanguageVersion = LanguageVersion.CSharp11, 59LanguageVersion = LanguageVersion.CSharp11, 80LanguageVersion = LanguageVersion.CSharp12, 101LanguageVersion = LanguageVersion.CSharp12, 133LanguageVersion = LanguageVersion.CSharp12, 165LanguageVersion = LanguageVersion.CSharp12, 197LanguageVersion = LanguageVersion.CSharp12, 229LanguageVersion = LanguageVersion.CSharp12, 250LanguageVersion = LanguageVersion.CSharp12, 271LanguageVersion = LanguageVersion.CSharp12, 292LanguageVersion = LanguageVersion.CSharp12, 313LanguageVersion = LanguageVersion.CSharp12, 347LanguageVersion = LanguageVersion.CSharp12, 368LanguageVersion = LanguageVersion.CSharp12, 389LanguageVersion = LanguageVersion.CSharp12, 410LanguageVersion = LanguageVersion.CSharp12, 431LanguageVersion = LanguageVersion.CSharp12, 467LanguageVersion = LanguageVersion.CSharp12, 503LanguageVersion = LanguageVersion.CSharp12, 535LanguageVersion = LanguageVersion.CSharp12, 567LanguageVersion = LanguageVersion.CSharp12, 589LanguageVersion = LanguageVersion.CSharp12, 621LanguageVersion = LanguageVersion.CSharp12, 642LanguageVersion = LanguageVersion.CSharp12, 674LanguageVersion = LanguageVersion.CSharp12, 695LanguageVersion = LanguageVersion.CSharp12, 717LanguageVersion = LanguageVersion.CSharp12, 741LanguageVersion = LanguageVersion.CSharp12, 763LanguageVersion = LanguageVersion.CSharp12, 785LanguageVersion = LanguageVersion.CSharp12, 809LanguageVersion = LanguageVersion.CSharp12, 833LanguageVersion = LanguageVersion.CSharp12, 855LanguageVersion = LanguageVersion.CSharp12, 877LanguageVersion = LanguageVersion.CSharp12, 900LanguageVersion = LanguageVersion.CSharp12, 933LanguageVersion = LanguageVersion.CSharp12, 968LanguageVersion = LanguageVersion.CSharp12, 1002LanguageVersion = LanguageVersion.CSharp12, 1038LanguageVersion = LanguageVersion.CSharp12, 1061LanguageVersion = LanguageVersion.CSharp12, 1085LanguageVersion = LanguageVersion.CSharp12, 1111LanguageVersion = LanguageVersion.CSharp12, 1151LanguageVersion = LanguageVersion.CSharp12, 1191LanguageVersion = LanguageVersion.CSharp12, 1229LanguageVersion = LanguageVersion.CSharp12, 1269LanguageVersion = LanguageVersion.CSharp12, 1305LanguageVersion = LanguageVersion.CSharp12, 1343LanguageVersion = LanguageVersion.CSharp12, 1381LanguageVersion = LanguageVersion.CSharp12, 1421LanguageVersion = LanguageVersion.CSharp12, 1457LanguageVersion = LanguageVersion.CSharp12, 1495LanguageVersion = LanguageVersion.CSharp12, 1533LanguageVersion = LanguageVersion.CSharp12, 1575LanguageVersion = LanguageVersion.CSharp12, 1595LanguageVersion = LanguageVersion.CSharp12, 1631LanguageVersion = LanguageVersion.CSharp12,

26LanguageVersion languageVersion = LanguageVersion.CSharp11) 40private static async Task TestMissingInRegularAndScriptAsync(string testCode, LanguageVersion? languageVersion = null) 343""", LanguageVersion.CSharp5); 603""", LanguageVersion.CSharp2); 1682""", OutputKind.ConsoleApplication, LanguageVersion.CSharp12); 1714""", languageVersion: LanguageVersion.CSharp12); 1748LanguageVersion = LanguageVersion.CSharp12, 1785LanguageVersion = LanguageVersion.CSharp12, 1826LanguageVersion = LanguageVersion.CSharp12,

31LanguageVersion = LanguageVersion.CSharp12, 375LanguageVersion = LanguageVersion.CSharp12, 798LanguageVersion = LanguageVersion.CSharp12, 823LanguageVersion = LanguageVersion.CSharp12, 1941LanguageVersion = LanguageVersion.CSharp12, 4385LanguageVersion = LanguageVersion.CSharp12, 5346LanguageVersion = LanguageVersion.CSharp12, 5386LanguageVersion = LanguageVersion.CSharp12, 5423LanguageVersion = LanguageVersion.CSharp12, 5457LanguageVersion = LanguageVersion.CSharp12, 5491LanguageVersion = LanguageVersion.CSharp12, 5525LanguageVersion = LanguageVersion.CSharp12, 5569LanguageVersion = LanguageVersion.CSharp12, 5603LanguageVersion = LanguageVersion.CSharp12, 5637LanguageVersion = LanguageVersion.CSharp12, 5681LanguageVersion = LanguageVersion.CSharp12, 5705LanguageVersion = LanguageVersion.CSharp12, 5743LanguageVersion = LanguageVersion.CSharp12, 5777LanguageVersion = LanguageVersion.CSharp12, 5811LanguageVersion = LanguageVersion.CSharp12, 5865LanguageVersion = LanguageVersion.CSharp12, 5887LanguageVersion = LanguageVersion.CSharp13, 5908LanguageVersion = LanguageVersion.CSharp13, 5940LanguageVersion = LanguageVersion.CSharp13,

266LanguageVersion = LanguageVersion.CSharp8 286LanguageVersion = LanguageVersion.CSharp7_3 307LanguageVersion = LanguageVersion.CSharp8 959LanguageVersion = LanguageVersion.CSharp9,

31private static async Task TestMissingAsync(string testCode, LanguageVersion languageVersion = LanguageVersion.CSharp8) 71""", LanguageVersion.CSharp7_3); 297""", LanguageVersion.CSharp7_3); 957""", LanguageVersion.CSharp12); 977""", LanguageVersion.CSharp12); 1000""", LanguageVersion.CSharp12);

26LanguageVersion languageVersion = LanguageVersion.CSharp8, 42LanguageVersion languageVersion = LanguageVersion.CSharp8, 197""", LanguageVersion.CSharp6); 589""", LanguageVersion.Latest); 987""", LanguageVersion.CSharp8, PreferImplicitTypeAlways); 1019""", LanguageVersion.CSharp9, options: PreferImplicitTypeAlways); 1179""", LanguageVersion.CSharp8, PreferImplicitTypeAlways); 1211""", LanguageVersion.CSharp9, options: PreferImplicitTypeAlways); 1903""", LanguageVersion.CSharp9); 1949""", LanguageVersion.CSharp9, equivalenceKey: nameof(AnalyzersResources.Simplify_check)); 2141LanguageVersion = LanguageVersion.CSharp9,

22private static readonly ParseOptions CSharp8 = CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp8); 23private static readonly ParseOptions CSharp9 = CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9); 163""", parameters: new TestParameters(parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp6))); 977[InlineData(LanguageVersion.CSharp8, "(string)null")] 978[InlineData(LanguageVersion.CSharp9, "null")] 979public async Task TestConversion2_Throw1(LanguageVersion languageVersion, string expectedFalseExpression) 1043[InlineData(LanguageVersion.CSharp8, "(string)null")] 1044[InlineData(LanguageVersion.CSharp9, "null")] 1045public async Task TestConversion3(LanguageVersion languageVersion, string expectedFalseExpression) 1078[InlineData(LanguageVersion.CSharp8, "(string)null")] 1079[InlineData(LanguageVersion.CSharp9, "null")] 1080public async Task TestConversion3_Throw1(LanguageVersion languageVersion, string expectedFalseExpression) 1113[InlineData(LanguageVersion.CSharp8, "(string)null")] 1114[InlineData(LanguageVersion.CSharp9, "null")] 1115public async Task TestConversion3_Throw2(LanguageVersion languageVersion, string expectedTrue)

539LanguageVersion = LanguageVersion.CSharp7_1 877LanguageVersion = LanguageVersion.CSharp9 912LanguageVersion = LanguageVersion.CSharp9

37LanguageVersion = LanguageVersion.CSharp7 62LanguageVersion = LanguageVersion.CSharp7_1 89LanguageVersion = LanguageVersion.CSharp7_1 116LanguageVersion = LanguageVersion.CSharp7_1 136LanguageVersion = LanguageVersion.CSharp7_1 167LanguageVersion = LanguageVersion.CSharp7_1 189LanguageVersion = LanguageVersion.CSharp7_1 216LanguageVersion = LanguageVersion.CSharp7_1 236LanguageVersion = LanguageVersion.CSharp7_1 256LanguageVersion = LanguageVersion.CSharp7_1 287LanguageVersion = LanguageVersion.CSharp7_1 310LanguageVersion = LanguageVersion.CSharp7_1 337LanguageVersion = LanguageVersion.CSharp7_1, 366LanguageVersion = LanguageVersion.CSharp7_1, 397LanguageVersion = LanguageVersion.CSharp7_1 424LanguageVersion = LanguageVersion.CSharp7_1 453LanguageVersion = LanguageVersion.CSharp7_1 479LanguageVersion = LanguageVersion.CSharp7_1 505LanguageVersion = LanguageVersion.CSharp7_1 538LanguageVersion = LanguageVersion.CSharp7_1 561LanguageVersion = LanguageVersion.CSharp7_1 584LanguageVersion = LanguageVersion.CSharp7_1 617LanguageVersion = LanguageVersion.CSharp7_1 640LanguageVersion = LanguageVersion.CSharp7_1 663LanguageVersion = LanguageVersion.CSharp7_1 696LanguageVersion = LanguageVersion.CSharp7_1 729LanguageVersion = LanguageVersion.CSharp7_1 749LanguageVersion = LanguageVersion.CSharp7_1 769LanguageVersion = LanguageVersion.CSharp7_1 796LanguageVersion = 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,

299LanguageVersion = LanguageVersion.CSharp11

29LanguageVersion version = LanguageVersion.CSharp8) 33ReferenceAssemblies = version == LanguageVersion.CSharp9 ? ReferenceAssemblies.Net.Net50 : ReferenceAssemblies.Default, 51LanguageVersion version = LanguageVersion.CSharp8) 55ReferenceAssemblies = version == LanguageVersion.CSharp9 ? ReferenceAssemblies.Net.Net50 : ReferenceAssemblies.Default, 71LanguageVersion version = LanguageVersion.CSharp8) 75ReferenceAssemblies = version == LanguageVersion.CSharp9 ? ReferenceAssemblies.Net.Net50 : ReferenceAssemblies.Default, 269await TestWithUseExpressionBody(code, fixedCode, LanguageVersion.CSharp9); 308LanguageVersion = LanguageVersion.CSharp9, 505await TestWithUseBlockBodyIncludingPropertiesAndIndexers(code, fixedCode, LanguageVersion.CSharp9); 888LanguageVersion = LanguageVersion.CSharp9, 921await TestWithUseExpressionBody(code, fixedCode, LanguageVersion.CSharp6); 955await TestWithUseExpressionBody(code, fixedCode, LanguageVersion.CSharp6);

24private static async Task TestWithUseExpressionBody(string code, string fixedCode, LanguageVersion version = LanguageVersion.CSharp8) 273await TestWithUseExpressionBody(code, fixedCode, LanguageVersion.CSharp6); 302await TestWithUseExpressionBody(code, fixedCode, LanguageVersion.CSharp6);

912LanguageVersion = LanguageVersion.CSharp9, 941LanguageVersion = LanguageVersion.CSharp9,

25private static async Task TestWithUseExpressionBody(string code, string fixedCode, LanguageVersion version = LanguageVersion.CSharp8) 862await TestWithUseExpressionBody(code, fixedCode, LanguageVersion.CSharp5); 875await TestWithUseExpressionBody(code, code, LanguageVersion.CSharp6); 895await TestWithUseExpressionBody(code, fixedCode, LanguageVersion.CSharp6); 909await TestWithUseExpressionBody(code, code, LanguageVersion.CSharp6); 941await TestWithUseExpressionBody(code, fixedCode, LanguageVersion.CSharp6);

25private static async Task TestWithUseExpressionBody(string code, string fixedCode, LanguageVersion version = LanguageVersion.CSharp8) 522await TestWithUseExpressionBody(code, fixedCode, LanguageVersion.CSharp6); 557await TestWithUseExpressionBody(code, fixedCode, LanguageVersion.CSharp6);

35LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp8, 57LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 78LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 99LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 120LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 135LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 162LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 177LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 192LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 213LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 240LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 262LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 297LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 324LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 345LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 366LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 387LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 408LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 429LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 444LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 465LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 486LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 501LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 517LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 536LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 559LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 582LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 607LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 642LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 665LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 688LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 717LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 732LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 756LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 781LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 806LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 831LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 848LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 865LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 890LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 915LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 932LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 949LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 974LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9,

3367""", new(parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9), options: ImplicitTypeEverywhere()));

41LanguageVersion = LanguageVersion.CSharp7, 533LanguageVersion = LanguageVersion.CSharp8, 570LanguageVersion = LanguageVersion.CSharp8,

41LanguageVersion = LanguageVersion.CSharp7, 100LanguageVersion = LanguageVersion.CSharp8, 137LanguageVersion = LanguageVersion.CSharp8, 400LanguageVersion = LanguageVersion.CSharp7,

30CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.Latest); 87""", count: 0, parameters: new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp6))); 103""", count: 0, parameters: new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp7)));

49""", parameters: new TestParameters().WithParseOptions(new CSharpParseOptions(LanguageVersion.CSharp7_3))); 64""", parameters: new TestParameters().WithParseOptions(new CSharpParseOptions(LanguageVersion.CSharp7_3))); 88""", parameters: new TestParameters().WithParseOptions(new CSharpParseOptions(LanguageVersion.CSharp7_3))); 114""", parameters: new TestParameters().WithParseOptions(new CSharpParseOptions(LanguageVersion.CSharp7_3))); 129""", parameters: new TestParameters().WithParseOptions(new CSharpParseOptions(LanguageVersion.CSharp7_3))); 144""", parameters: new TestParameters().WithParseOptions(new CSharpParseOptions(LanguageVersion.CSharp8)));

95new TestParameters(parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp8))); 115new TestParameters(parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9))); 175""", parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp8)); 205""", parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9)); 235""", parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp8)); 265""", parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9)); 283""", 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); 99new TestParameters(parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp8))); 119new TestParameters(parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9))); 287""", parameters: new TestParameters(parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp6)));

20private static async Task VerifyAsync(string source, string fixedSource, LanguageVersion languageVersion) 31=> await VerifyAsync(source, fixedSource, LanguageVersion.CSharp9); 34=> await VerifyAsync(source, fixedSource, LanguageVersion.CSharp8);

29private static readonly ParseOptions CSharp72ParseOptions = CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp7_2); 53""", parameters: new TestParameters(parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp6))); 4165parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp10)); 4181new TestParameters(parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9)));

33LanguageVersion = LanguageVersion.CSharp9, 41private static async Task TestMissingInRegularAndScriptAsync(string testCode, LanguageVersion languageVersion = LanguageVersion.CSharp9) 298""", LanguageVersion.CSharp5); 316""", LanguageVersion.CSharp5);

25LanguageVersion? languageVersion = null) 77LanguageVersion = LanguageVersion.CSharp12, 184LanguageVersion = LanguageVersion.CSharp12, 249LanguageVersion = LanguageVersion.CSharp12, 313LanguageVersion = LanguageVersion.CSharp12, 358LanguageVersion = LanguageVersion.CSharp12, 405LanguageVersion = LanguageVersion.CSharp12, 452LanguageVersion = LanguageVersion.CSharp12, 498LanguageVersion = LanguageVersion.CSharp12, 547LanguageVersion = LanguageVersion.CSharp12, 598LanguageVersion = LanguageVersion.CSharp12, 618""", LanguageVersion.CSharp2); 679LanguageVersion = LanguageVersion.CSharp12, 735LanguageVersion = LanguageVersion.CSharp12, 792LanguageVersion = LanguageVersion.CSharp12, 837LanguageVersion = LanguageVersion.CSharp12, 889LanguageVersion = LanguageVersion.CSharp12, 990LanguageVersion = LanguageVersion.CSharp12, 1043LanguageVersion = LanguageVersion.CSharp12, 1155LanguageVersion = LanguageVersion.CSharp12, 1220LanguageVersion = LanguageVersion.CSharp12, 1257LanguageVersion = LanguageVersion.CSharp12, 1339LanguageVersion = LanguageVersion.CSharp12, 1412LanguageVersion = LanguageVersion.CSharp12, 1455LanguageVersion = LanguageVersion.CSharp12, 1502LanguageVersion = LanguageVersion.CSharp12, 1545LanguageVersion = LanguageVersion.CSharp12, 1592LanguageVersion = LanguageVersion.CSharp12,

70LanguageVersion = LanguageVersion.CSharp7, 91LanguageVersion = LanguageVersion.CSharp7, 110LanguageVersion = LanguageVersion.CSharp7, 134LanguageVersion = LanguageVersion.CSharp7, 155LanguageVersion = LanguageVersion.CSharp8, 176LanguageVersion = LanguageVersion.CSharp9, 197LanguageVersion = LanguageVersion.CSharp8, 218LanguageVersion = LanguageVersion.CSharp9, 242LanguageVersion = LanguageVersion.CSharp9, 265LanguageVersion = LanguageVersion.CSharp8, 300LanguageVersion = LanguageVersion.CSharp9, 337LanguageVersion = LanguageVersion.CSharp10, 360LanguageVersion = LanguageVersion.CSharp8, 383LanguageVersion = LanguageVersion.CSharp8, 420LanguageVersion = LanguageVersion.CSharp10, 451LanguageVersion = LanguageVersion.CSharp9, 482LanguageVersion = LanguageVersion.CSharp9, 517LanguageVersion = LanguageVersion.CSharp9, 548LanguageVersion = LanguageVersion.CSharp9, 599LanguageVersion = LanguageVersion.CSharp9, 620LanguageVersion = LanguageVersion.CSharp9, 641LanguageVersion = LanguageVersion.CSharp9, 665LanguageVersion = LanguageVersion.CSharp9, 700LanguageVersion = LanguageVersion.CSharp9, 737LanguageVersion = LanguageVersion.CSharp10, 772LanguageVersion = LanguageVersion.CSharp9, 809LanguageVersion = LanguageVersion.CSharp10, 834LanguageVersion = LanguageVersion.CSharp9, 871LanguageVersion = LanguageVersion.CSharp10, 984LanguageVersion = LanguageVersion.CSharp9, 1037LanguageVersion = LanguageVersion.CSharp9, 1134LanguageVersion = LanguageVersion.CSharp9, 1155LanguageVersion = LanguageVersion.CSharp9, 1228LanguageVersion = 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 async Task TestStatement(string input, string output, LanguageVersion version = LanguageVersion.CSharp8) 98""", new TestParameters(parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp6))); 1166""", parameters: new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp8))); 1205""", parameters: new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp8))); 1471""", parameters: new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp8))); 1502""", parameters: new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp8))); 1557""", parameters: new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp8))); 1589""", parameters: new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp8))); 1652""", parameters: new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp8))); 1694""", parameters: new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp8)));

72""", parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp8)); 129""", parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9));

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

49LanguageVersion = LanguageVersion.CSharp9, 80LanguageVersion = LanguageVersion.CSharp9, 111LanguageVersion = LanguageVersion.CSharp9, 142LanguageVersion = LanguageVersion.CSharp9, 173LanguageVersion = LanguageVersion.CSharp9, 204LanguageVersion = LanguageVersion.CSharp9, 247LanguageVersion = LanguageVersion.CSharp9, 284LanguageVersion = LanguageVersion.CSharp9, 304LanguageVersion = LanguageVersion.CSharp8, 335LanguageVersion = LanguageVersion.CSharp9, 366LanguageVersion = LanguageVersion.CSharp9, 401LanguageVersion = LanguageVersion.CSharp9, 421LanguageVersion = LanguageVersion.CSharp9, 444LanguageVersion = LanguageVersion.CSharp9, 467LanguageVersion = LanguageVersion.CSharp9, 506LanguageVersion = LanguageVersion.CSharp9,

40LanguageVersion = LanguageVersion.CSharp12, 57LanguageVersion = LanguageVersion.CSharp11, 74LanguageVersion = LanguageVersion.CSharp12, 96LanguageVersion = LanguageVersion.CSharp12, 117LanguageVersion = LanguageVersion.CSharp12, 146LanguageVersion = LanguageVersion.CSharp12, 183LanguageVersion = LanguageVersion.CSharp12, 220LanguageVersion = LanguageVersion.CSharp12, 259LanguageVersion = LanguageVersion.CSharp12, 298LanguageVersion = LanguageVersion.CSharp12, 339LanguageVersion = LanguageVersion.CSharp12, 355LanguageVersion = LanguageVersion.CSharp12, 373LanguageVersion = LanguageVersion.CSharp12, 397LanguageVersion = LanguageVersion.CSharp12, 421LanguageVersion = LanguageVersion.CSharp12, 445LanguageVersion = LanguageVersion.CSharp12, 469LanguageVersion = LanguageVersion.CSharp12, 490LanguageVersion = LanguageVersion.CSharp12, 511LanguageVersion = LanguageVersion.CSharp12, 529LanguageVersion = LanguageVersion.CSharp12, 550LanguageVersion = LanguageVersion.CSharp12, 574LanguageVersion = LanguageVersion.CSharp12, 603LanguageVersion = LanguageVersion.CSharp12, 630LanguageVersion = LanguageVersion.CSharp12, 658LanguageVersion = LanguageVersion.CSharp12, 686LanguageVersion = LanguageVersion.CSharp12, 715LanguageVersion = LanguageVersion.CSharp12, 738LanguageVersion = LanguageVersion.CSharp12, 793LanguageVersion = LanguageVersion.CSharp12, 832LanguageVersion = LanguageVersion.CSharp12, 871LanguageVersion = LanguageVersion.CSharp12, 910LanguageVersion = LanguageVersion.CSharp12, 951LanguageVersion = LanguageVersion.CSharp12, 994LanguageVersion = LanguageVersion.CSharp12, 1037LanguageVersion = LanguageVersion.CSharp12, 1059LanguageVersion = LanguageVersion.CSharp12, 1081LanguageVersion = LanguageVersion.CSharp12, 1111LanguageVersion = LanguageVersion.CSharp12, 1147LanguageVersion = LanguageVersion.CSharp12, 1187LanguageVersion = LanguageVersion.CSharp12, 1217LanguageVersion = LanguageVersion.CSharp12, 1265LanguageVersion = LanguageVersion.CSharp12, 1309LanguageVersion = LanguageVersion.CSharp12, 1349LanguageVersion = LanguageVersion.CSharp12, 1398LanguageVersion = LanguageVersion.CSharp12, 1445LanguageVersion = LanguageVersion.CSharp12, 1487LanguageVersion = LanguageVersion.CSharp12, 1529LanguageVersion = LanguageVersion.CSharp12, 1577LanguageVersion = LanguageVersion.CSharp12, 1625LanguageVersion = LanguageVersion.CSharp12, 1672LanguageVersion = LanguageVersion.CSharp12, 1721LanguageVersion = LanguageVersion.CSharp12, 1754LanguageVersion = LanguageVersion.CSharp12, 1786LanguageVersion = LanguageVersion.CSharp12, 1827LanguageVersion = LanguageVersion.CSharp12, 1886LanguageVersion = LanguageVersion.CSharp12, 1914LanguageVersion = LanguageVersion.CSharp12, 1942LanguageVersion = LanguageVersion.CSharp12, 1976LanguageVersion = LanguageVersion.CSharp12, 2012LanguageVersion = LanguageVersion.CSharp12, 2049LanguageVersion = LanguageVersion.CSharp12, 2088LanguageVersion = LanguageVersion.CSharp12, 2120LanguageVersion = LanguageVersion.CSharp12, 2155LanguageVersion = LanguageVersion.CSharp12, 2183LanguageVersion = LanguageVersion.CSharp12, 2217LanguageVersion = LanguageVersion.CSharp12, 2247LanguageVersion = LanguageVersion.CSharp12, 2283LanguageVersion = LanguageVersion.CSharp12, 2311LanguageVersion = LanguageVersion.CSharp12, 2345LanguageVersion = LanguageVersion.CSharp12, 2375LanguageVersion = LanguageVersion.CSharp12, 2411LanguageVersion = LanguageVersion.CSharp12, 2440LanguageVersion = LanguageVersion.CSharp12, 2473LanguageVersion = LanguageVersion.CSharp12, 2502LanguageVersion = LanguageVersion.CSharp12, 2535LanguageVersion = LanguageVersion.CSharp12, 2565LanguageVersion = LanguageVersion.CSharp12, 2586LanguageVersion = LanguageVersion.CSharp12, 2612LanguageVersion = LanguageVersion.CSharp12, 2638LanguageVersion = LanguageVersion.CSharp12, 2660LanguageVersion = LanguageVersion.CSharp12, 2682LanguageVersion = LanguageVersion.CSharp12, 2706LanguageVersion = LanguageVersion.CSharp12, 2730LanguageVersion = LanguageVersion.CSharp12, 2754LanguageVersion = LanguageVersion.CSharp12, 2778LanguageVersion = LanguageVersion.CSharp12, 2804LanguageVersion = LanguageVersion.CSharp12, 2830LanguageVersion = LanguageVersion.CSharp12, 2863LanguageVersion = LanguageVersion.CSharp12, 2904LanguageVersion = LanguageVersion.CSharp12, 2936LanguageVersion = LanguageVersion.CSharp12, 2968LanguageVersion = LanguageVersion.CSharp12, 2996LanguageVersion = LanguageVersion.CSharp12, 3024LanguageVersion = LanguageVersion.CSharp12, 3052LanguageVersion = LanguageVersion.CSharp12, 3129LanguageVersion = LanguageVersion.CSharp12, 3167LanguageVersion = LanguageVersion.CSharp12, 3212LanguageVersion = LanguageVersion.CSharp12, 3250LanguageVersion = LanguageVersion.CSharp12, 3292LanguageVersion = LanguageVersion.CSharp12, 3321LanguageVersion = LanguageVersion.CSharp12, 3343LanguageVersion = LanguageVersion.CSharp12, 3370LanguageVersion = LanguageVersion.CSharp12, 3391LanguageVersion = LanguageVersion.CSharp12, 3420LanguageVersion = LanguageVersion.CSharp12, 3442LanguageVersion = LanguageVersion.CSharp12, 3468LanguageVersion = LanguageVersion.CSharp12, 3497LanguageVersion = LanguageVersion.CSharp12, 3526LanguageVersion = LanguageVersion.CSharp12, 3555LanguageVersion = LanguageVersion.CSharp12, 3584LanguageVersion = LanguageVersion.CSharp12, 3606LanguageVersion = LanguageVersion.CSharp12, 3628LanguageVersion = LanguageVersion.CSharp12, 3645LanguageVersion = LanguageVersion.CSharp12, 3692LanguageVersion = LanguageVersion.CSharp12, 3728LanguageVersion = LanguageVersion.CSharp12, 3765LanguageVersion = LanguageVersion.CSharp12, 3791LanguageVersion = LanguageVersion.CSharp12, 3813LanguageVersion = LanguageVersion.CSharp12, 3839LanguageVersion = LanguageVersion.CSharp12, 3869LanguageVersion = LanguageVersion.CSharp12, 3912LanguageVersion = LanguageVersion.CSharp12, 3955LanguageVersion = LanguageVersion.CSharp12, 3998LanguageVersion = LanguageVersion.CSharp12, 4027LanguageVersion = LanguageVersion.CSharp12, 4070LanguageVersion = LanguageVersion.CSharp12, 4100LanguageVersion = LanguageVersion.CSharp12, 4126LanguageVersion = LanguageVersion.CSharp12, 4159LanguageVersion = LanguageVersion.CSharp12, 4188LanguageVersion = LanguageVersion.CSharp12, 4220LanguageVersion = LanguageVersion.CSharp12, 4249LanguageVersion = LanguageVersion.CSharp12, 4280LanguageVersion = LanguageVersion.CSharp12, 4308LanguageVersion = LanguageVersion.CSharp12, 4341LanguageVersion = LanguageVersion.CSharp12, 4371LanguageVersion = LanguageVersion.CSharp12, 4405LanguageVersion = LanguageVersion.CSharp12, 4436LanguageVersion = LanguageVersion.CSharp12, 4468LanguageVersion = LanguageVersion.CSharp12, 4503LanguageVersion = LanguageVersion.CSharp12,

142LanguageVersion = LanguageVersion.CSharp7_2 1944LanguageVersion = LanguageVersion.CSharp9, 1979LanguageVersion = LanguageVersion.CSharp9, 2005LanguageVersion = LanguageVersion.CSharp9, 2044LanguageVersion = LanguageVersion.CSharp9, 2079LanguageVersion = LanguageVersion.CSharp9, 2116LanguageVersion = LanguageVersion.CSharp9,

64LanguageVersion = LanguageVersion.CSharp13, 87LanguageVersion = LanguageVersion.CSharp12, 110LanguageVersion = LanguageVersion.CSharp12, 133LanguageVersion = LanguageVersion.CSharp12, 171LanguageVersion = LanguageVersion.CSharp13, 209LanguageVersion = LanguageVersion.CSharp13, 232LanguageVersion = LanguageVersion.CSharp13, 255LanguageVersion = LanguageVersion.CSharp13, 280LanguageVersion = LanguageVersion.CSharp13, 303LanguageVersion = LanguageVersion.CSharp13, 343LanguageVersion = LanguageVersion.CSharp13, 381LanguageVersion = LanguageVersion.CSharp13, 422LanguageVersion = LanguageVersion.CSharp13, 460LanguageVersion = LanguageVersion.CSharp13, 486LanguageVersion = LanguageVersion.CSharp13, 531LanguageVersion = LanguageVersion.CSharp13, 584LanguageVersion = LanguageVersion.CSharp13, 604LanguageVersion = LanguageVersion.CSharp13, 631LanguageVersion = LanguageVersion.CSharp13, 656LanguageVersion = LanguageVersion.CSharp13, 679LanguageVersion = LanguageVersion.CSharp13, 702LanguageVersion = LanguageVersion.CSharp13, 725LanguageVersion = LanguageVersion.CSharp13, 753LanguageVersion = LanguageVersion.CSharp13, 781LanguageVersion = LanguageVersion.CSharp13, 804LanguageVersion = LanguageVersion.CSharp13, 827LanguageVersion = LanguageVersion.CSharp13, 873LanguageVersion = LanguageVersion.CSharp13, 921LanguageVersion = LanguageVersion.CSharp13, 959LanguageVersion = LanguageVersion.CSharp13, 997LanguageVersion = LanguageVersion.CSharp13, 1035LanguageVersion = LanguageVersion.CSharp13, 1073LanguageVersion = LanguageVersion.CSharp13, 1121LanguageVersion = LanguageVersion.CSharp13, 1169LanguageVersion = LanguageVersion.CSharp13, 1217LanguageVersion = LanguageVersion.CSharp13, 1265LanguageVersion = LanguageVersion.CSharp13, 1321LanguageVersion = LanguageVersion.CSharp13, 1377LanguageVersion = LanguageVersion.CSharp13, 1417LanguageVersion = LanguageVersion.CSharp13, 1438LanguageVersion = LanguageVersion.CSharp13, 1478LanguageVersion = LanguageVersion.CSharp13, 1524LanguageVersion = LanguageVersion.CSharp13, 1568LanguageVersion = LanguageVersion.CSharp13, 1612LanguageVersion = LanguageVersion.CSharp13,

150""", new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp6))); 617""", TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9)); 653""", TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9)); 690""", TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9));

42LanguageVersion = LanguageVersion.CSharp6, 444LanguageVersion = LanguageVersion.CSharp9,

90LanguageVersion = LanguageVersion.CSharp13,

47LanguageVersion = LanguageVersion.CSharp12 66LanguageVersion = LanguageVersion.CSharp10 86LanguageVersion = LanguageVersion.CSharp12 106LanguageVersion = LanguageVersion.CSharp12 133LanguageVersion = LanguageVersion.CSharp12 153LanguageVersion = LanguageVersion.CSharp12 177LanguageVersion = LanguageVersion.CSharp12 199LanguageVersion = LanguageVersion.CSharp12 219LanguageVersion = LanguageVersion.CSharp12 250LanguageVersion = LanguageVersion.CSharp12 283LanguageVersion = LanguageVersion.CSharp12 314LanguageVersion = LanguageVersion.CSharp12 345LanguageVersion = LanguageVersion.CSharp12 376LanguageVersion = LanguageVersion.CSharp12 407LanguageVersion = LanguageVersion.CSharp12 437LanguageVersion = LanguageVersion.CSharp12 468LanguageVersion = LanguageVersion.CSharp12 499LanguageVersion = LanguageVersion.CSharp12 534LanguageVersion = LanguageVersion.CSharp12 565LanguageVersion = LanguageVersion.CSharp12 596LanguageVersion = LanguageVersion.CSharp12 617LanguageVersion = LanguageVersion.CSharp12 638LanguageVersion = LanguageVersion.CSharp12 659LanguageVersion = LanguageVersion.CSharp12 693LanguageVersion = LanguageVersion.CSharp12 774LanguageVersion = LanguageVersion.CSharp12 802LanguageVersion = LanguageVersion.CSharp12 835LanguageVersion = LanguageVersion.CSharp12 890LanguageVersion = LanguageVersion.CSharp12 921LanguageVersion = LanguageVersion.CSharp12 952LanguageVersion = LanguageVersion.CSharp12 983LanguageVersion = LanguageVersion.CSharp12 1014LanguageVersion = LanguageVersion.CSharp12 1045LanguageVersion = LanguageVersion.CSharp12 1076LanguageVersion = LanguageVersion.CSharp12 1096LanguageVersion = LanguageVersion.CSharp12 1127LanguageVersion = LanguageVersion.CSharp12 1158LanguageVersion = LanguageVersion.CSharp12 1189LanguageVersion = LanguageVersion.CSharp12 1220LanguageVersion = LanguageVersion.CSharp12 1251LanguageVersion = LanguageVersion.CSharp12 1292LanguageVersion = LanguageVersion.CSharp12 1347LanguageVersion = LanguageVersion.CSharp12 1436LanguageVersion = LanguageVersion.CSharp12 1467LanguageVersion = LanguageVersion.CSharp12 1498LanguageVersion = LanguageVersion.CSharp12 1529LanguageVersion = LanguageVersion.CSharp12 1564LanguageVersion = LanguageVersion.CSharp12 1599LanguageVersion = LanguageVersion.CSharp12

1585[InlineData("iso-1", LanguageVersion.CSharp1)] 1586[InlineData("iso-2", LanguageVersion.CSharp2)] 1587[InlineData("1", LanguageVersion.CSharp1)] 1588[InlineData("1.0", LanguageVersion.CSharp1)] 1589[InlineData("2", LanguageVersion.CSharp2)] 1590[InlineData("2.0", LanguageVersion.CSharp2)] 1591[InlineData("3", LanguageVersion.CSharp3)] 1592[InlineData("3.0", LanguageVersion.CSharp3)] 1593[InlineData("4", LanguageVersion.CSharp4)] 1594[InlineData("4.0", LanguageVersion.CSharp4)] 1595[InlineData("5", LanguageVersion.CSharp5)] 1596[InlineData("5.0", LanguageVersion.CSharp5)] 1597[InlineData("6", LanguageVersion.CSharp6)] 1598[InlineData("6.0", LanguageVersion.CSharp6)] 1599[InlineData("7", LanguageVersion.CSharp7)] 1600[InlineData("7.0", LanguageVersion.CSharp7)] 1601[InlineData("7.1", LanguageVersion.CSharp7_1)] 1602[InlineData("7.2", LanguageVersion.CSharp7_2)] 1603[InlineData("7.3", LanguageVersion.CSharp7_3)] 1604[InlineData("8", LanguageVersion.CSharp8)] 1605[InlineData("8.0", LanguageVersion.CSharp8)] 1606[InlineData("9", LanguageVersion.CSharp9)] 1607[InlineData("9.0", LanguageVersion.CSharp9)] 1608[InlineData("preview", LanguageVersion.Preview)] 1609public void LangVersion_CanParseCorrectVersions(string value, LanguageVersion expectedVersion) 1623[InlineData("6", "7", LanguageVersion.CSharp7)] 1624[InlineData("7", "6", LanguageVersion.CSharp6)] 1625[InlineData("7", "1", LanguageVersion.CSharp1)] 1626[InlineData("6", "iso-1", LanguageVersion.CSharp1)] 1627[InlineData("6", "iso-2", LanguageVersion.CSharp2)] 1628[InlineData("6", "default", LanguageVersion.Default)] 1629[InlineData("7", "default", LanguageVersion.Default)] 1630[InlineData("iso-2", "6", LanguageVersion.CSharp6)] 1631public void LangVersion_LatterVersionOverridesFormerOne(string formerValue, string latterValue, LanguageVersion expectedVersion) 1641LanguageVersion defaultEffectiveVersion = LanguageVersion.Default.MapSpecifiedToEffectiveVersion(); 1642Assert.NotEqual(LanguageVersion.Default, defaultEffectiveVersion); 1647Assert.Equal(LanguageVersion.Default, parsedArgs.ParseOptions.SpecifiedLanguageVersion); 1654LanguageVersion latestEffectiveVersion = LanguageVersion.Latest.MapSpecifiedToEffectiveVersion(); 1655Assert.NotEqual(LanguageVersion.Latest, latestEffectiveVersion); 1660Assert.Equal(LanguageVersion.Latest, parsedArgs.ParseOptions.SpecifiedLanguageVersion); 1669Assert.Equal(LanguageVersion.Default, parsedArgs.ParseOptions.SpecifiedLanguageVersion); 1734Enum.GetValues(typeof(LanguageVersion)).Cast<LanguageVersion>().Select(v => v.ToDisplayString())); 1741var versions = Enum.GetValues(typeof(LanguageVersion)) 1742.Cast<LanguageVersion>() 1744LanguageVersion.Default, 1745LanguageVersion.Latest, 1746LanguageVersion.LatestMajor, 1747LanguageVersion.Preview 1778InlineData(LanguageVersion.CSharp1, LanguageVersion.CSharp1), 1779InlineData(LanguageVersion.CSharp2, LanguageVersion.CSharp2), 1780InlineData(LanguageVersion.CSharp3, LanguageVersion.CSharp3), 1781InlineData(LanguageVersion.CSharp4, LanguageVersion.CSharp4), 1782InlineData(LanguageVersion.CSharp5, LanguageVersion.CSharp5), 1783InlineData(LanguageVersion.CSharp6, LanguageVersion.CSharp6), 1784InlineData(LanguageVersion.CSharp7, LanguageVersion.CSharp7), 1785InlineData(LanguageVersion.CSharp7_1, LanguageVersion.CSharp7_1), 1786InlineData(LanguageVersion.CSharp7_2, LanguageVersion.CSharp7_2), 1787InlineData(LanguageVersion.CSharp7_3, LanguageVersion.CSharp7_3), 1788InlineData(LanguageVersion.CSharp8, LanguageVersion.CSharp8), 1789InlineData(LanguageVersion.CSharp9, LanguageVersion.CSharp9), 1790InlineData(LanguageVersion.CSharp10, LanguageVersion.CSharp10), 1791InlineData(LanguageVersion.CSharp11, LanguageVersion.CSharp11), 1792InlineData(LanguageVersion.CSharp12, LanguageVersion.CSharp12), 1793InlineData(LanguageVersion.CSharp13, LanguageVersion.CSharp13), 1794InlineData(LanguageVersion.CSharp13, LanguageVersion.LatestMajor), 1795InlineData(LanguageVersion.CSharp13, LanguageVersion.Latest), 1796InlineData(LanguageVersion.CSharp13, LanguageVersion.Default), 1797InlineData(LanguageVersion.Preview, LanguageVersion.Preview), 1799public void LanguageVersion_MapSpecifiedToEffectiveVersion(LanguageVersion expectedMappedVersion, LanguageVersion input) 1809InlineData("iso-1", true, LanguageVersion.CSharp1), 1810InlineData("ISO-1", true, LanguageVersion.CSharp1), 1811InlineData("iso-2", true, LanguageVersion.CSharp2), 1812InlineData("1", true, LanguageVersion.CSharp1), 1813InlineData("1.0", true, LanguageVersion.CSharp1), 1814InlineData("2", true, LanguageVersion.CSharp2), 1815InlineData("2.0", true, LanguageVersion.CSharp2), 1816InlineData("3", true, LanguageVersion.CSharp3), 1817InlineData("3.0", true, LanguageVersion.CSharp3), 1818InlineData("4", true, LanguageVersion.CSharp4), 1819InlineData("4.0", true, LanguageVersion.CSharp4), 1820InlineData("5", true, LanguageVersion.CSharp5), 1821InlineData("5.0", true, LanguageVersion.CSharp5), 1822InlineData("05", false, LanguageVersion.Default), 1823InlineData("6", true, LanguageVersion.CSharp6), 1824InlineData("6.0", true, LanguageVersion.CSharp6), 1825InlineData("7", true, LanguageVersion.CSharp7), 1826InlineData("7.0", true, LanguageVersion.CSharp7), 1827InlineData("07", false, LanguageVersion.Default), 1828InlineData("7.1", true, LanguageVersion.CSharp7_1), 1829InlineData("7.2", true, LanguageVersion.CSharp7_2), 1830InlineData("7.3", true, LanguageVersion.CSharp7_3), 1831InlineData("8", true, LanguageVersion.CSharp8), 1832InlineData("8.0", true, LanguageVersion.CSharp8), 1833InlineData("9", true, LanguageVersion.CSharp9), 1834InlineData("9.0", true, LanguageVersion.CSharp9), 1835InlineData("10", true, LanguageVersion.CSharp10), 1836InlineData("10.0", true, LanguageVersion.CSharp10), 1837InlineData("11", true, LanguageVersion.CSharp11), 1838InlineData("11.0", true, LanguageVersion.CSharp11), 1839InlineData("12", true, LanguageVersion.CSharp12), 1840InlineData("12.0", true, LanguageVersion.CSharp12), 1841InlineData("13", true, LanguageVersion.CSharp13), 1842InlineData("13.0", true, LanguageVersion.CSharp13), 1843InlineData("08", false, LanguageVersion.Default), 1844InlineData("07.1", false, LanguageVersion.Default), 1845InlineData("default", true, LanguageVersion.Default), 1846InlineData("latest", true, LanguageVersion.Latest), 1847InlineData("latestmajor", true, LanguageVersion.LatestMajor), 1848InlineData("preview", true, LanguageVersion.Preview), 1849InlineData("latestpreview", false, LanguageVersion.Default), 1850InlineData(null, true, LanguageVersion.Default), 1851InlineData("bad", false, LanguageVersion.Default)] 1852public void LanguageVersion_TryParseDisplayString(string input, bool success, LanguageVersion expected) 1854Assert.Equal(success, LanguageVersionFacts.TryParse(input, out var version)); 1866Assert.True(LanguageVersionFacts.TryParse("ISO-1", out var version)); 1867Assert.Equal(LanguageVersion.CSharp1, version); 1880var expected = Enum.GetValues(typeof(LanguageVersion)).Cast<LanguageVersion>()

141if (!ConvertNamespaceAnalysis.CanOfferUseFileScoped(s_fileScopedNamespacePreferenceOption, (CompilationUnitSyntax)parsedDocument.Root, namespaceDecl, forAnalyzer: true, LanguageVersion.CSharp10))

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

182parseOptions: new CSharpParseOptions(LanguageVersion.CSharp7));

3094[new CSharpParseOptions(LanguageVersion.CSharp8)],

111LanguageVersion = LanguageVersion.CSharp6, 148LanguageVersion = LanguageVersion.CSharp7, 186LanguageVersion = LanguageVersion.CSharp6, 230LanguageVersion = LanguageVersion.CSharp6, 326LanguageVersion = LanguageVersion.CSharp6, 364LanguageVersion = LanguageVersion.CSharp6, 402LanguageVersion = LanguageVersion.CSharp6, 445LanguageVersion = LanguageVersion.CSharp6, 487LanguageVersion = LanguageVersion.CSharp6, 548LanguageVersion = LanguageVersion.CSharp6, 616LanguageVersion = LanguageVersion.CSharp6, 878LanguageVersion = LanguageVersion.CSharp6, 950LanguageVersion = LanguageVersion.CSharp6, 994LanguageVersion = LanguageVersion.CSharp6, 1049LanguageVersion = LanguageVersion.CSharp6, 1102LanguageVersion = LanguageVersion.CSharp6, 1147LanguageVersion = LanguageVersion.CSharp6, 1190LanguageVersion = LanguageVersion.CSharp6, 1234LanguageVersion = LanguageVersion.CSharp6, 1286LanguageVersion = LanguageVersion.CSharp6, 1494LanguageVersion = LanguageVersion.CSharp6, 1532LanguageVersion = LanguageVersion.CSharp6, 1570LanguageVersion = LanguageVersion.CSharp6, 1614LanguageVersion = LanguageVersion.CSharp6, 1658LanguageVersion = LanguageVersion.CSharp6, 1710LanguageVersion = LanguageVersion.CSharp6, 1764LanguageVersion = LanguageVersion.CSharp6, 1816LanguageVersion = LanguageVersion.CSharp6, 1860LanguageVersion = LanguageVersion.CSharp6, 1904LanguageVersion = LanguageVersion.CSharp6, 1956LanguageVersion = LanguageVersion.CSharp6, 2000LanguageVersion = LanguageVersion.CSharp6, 2043LanguageVersion = LanguageVersion.CSharp6, 2088LanguageVersion = LanguageVersion.CSharp6, 2131LanguageVersion = LanguageVersion.CSharp6, 2166LanguageVersion = LanguageVersion.CSharp6, 2339LanguageVersion = LanguageVersion.CSharp6, 2383LanguageVersion = LanguageVersion.CSharp6, 2431LanguageVersion = LanguageVersion.CSharp6, 2486LanguageVersion = LanguageVersion.CSharp6, 2544LanguageVersion = LanguageVersion.CSharp6, 2618LanguageVersion = LanguageVersion.CSharp6, 2663LanguageVersion = LanguageVersion.CSharp6, 2776LanguageVersion = LanguageVersion.CSharp8, 2825LanguageVersion = LanguageVersion.CSharp8, 2870LanguageVersion = LanguageVersion.CSharp6, 2916LanguageVersion = LanguageVersion.CSharp7, 2962LanguageVersion = LanguageVersion.CSharp8, 3008LanguageVersion = LanguageVersion.CSharp9, 3055LanguageVersion = LanguageVersion.CSharp8, 3105LanguageVersion = LanguageVersion.CSharp8, 3145LanguageVersion = LanguageVersion.CSharp6, 3155LanguageVersion = LanguageVersion.CSharp6, 3308LanguageVersion = LanguageVersion.CSharp6, 3373LanguageVersion = LanguageVersion.CSharp6, 3441LanguageVersion = LanguageVersion.CSharp6, 3520LanguageVersion = LanguageVersion.CSharp6, 3591LanguageVersion = LanguageVersion.CSharp6, 3666LanguageVersion = LanguageVersion.CSharp6, 3744LanguageVersion = LanguageVersion.CSharp6, 3822LanguageVersion = LanguageVersion.CSharp6, 4038LanguageVersion = LanguageVersion.Default, 4095LanguageVersion = LanguageVersion.Default, 4400LanguageVersion = LanguageVersion.Default,

5592parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp10),

51LanguageVersion = LanguageVersion.CSharp11, 91LanguageVersion = LanguageVersion.CSharp6, 244[InlineData(LanguageVersion.CSharp11)] 245[InlineData(LanguageVersion.CSharp8)] 246public async Task TestNotOnPartialMethodDefinition1(LanguageVersion languageVersion) 284LanguageVersion = LanguageVersion.CSharp9, 290[InlineData(LanguageVersion.CSharp11)] 291[InlineData(LanguageVersion.CSharp8)] 292public async Task TestNotOnPartialMethodDefinition2(LanguageVersion languageVersion) 330LanguageVersion = LanguageVersion.CSharp9, 374LanguageVersion = LanguageVersion.CSharp9, 445LanguageVersion = LanguageVersion.CSharp9, 893LanguageVersion = LanguageVersion.CSharp6, 1664LanguageVersion = LanguageVersion.CSharp11, 1714LanguageVersion = LanguageVersion.CSharp11, 1828LanguageVersion = LanguageVersion.CSharp11, 2918[InlineData(LanguageVersion.CSharp10)] 2919[InlineData(LanguageVersion.CSharp11)] 2920public async Task TestNotInRecord(LanguageVersion version) 2940LanguageVersion = LanguageVersion.CSharp12, 2953LanguageVersion = LanguageVersion.CSharp12,

54LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 79LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9,

685LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp10 3387LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp10, 3407LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp10, 3430LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp10,

32protected static string GetMarkup(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) 86""", LanguageVersion.CSharp9); 99""", LanguageVersion.CSharp9); 105await VerifyKeywordAsync("$$", LanguageVersion.CSharp9); 118""", LanguageVersion.CSharp9); 131""", LanguageVersion.CSharp9); 137await VerifyKeywordAsync("var z = $$", LanguageVersion.CSharp9); 150""", LanguageVersion.CSharp9); 156await VerifyAbsenceAsync("using $$", LanguageVersion.CSharp9); 177""", LanguageVersion.CSharp9); 183await VerifyAbsenceAsync("foreach $$", LanguageVersion.CSharp9); 197""", LanguageVersion.CSharp9); 207""", LanguageVersion.CSharp9); 221""", LanguageVersion.CSharp9); 231""", LanguageVersion.CSharp9); 245""", LanguageVersion.CSharp9); 255""", LanguageVersion.CSharp9); 268""", LanguageVersion.CSharp9); 274await VerifyAbsenceAsync("lock (this) { $$ }", LanguageVersion.CSharp9); 288""", LanguageVersion.CSharp9); 298""", LanguageVersion.CSharp9); 311""", LanguageVersion.CSharp9); 317await VerifyKeywordAsync("lock($$", LanguageVersion.CSharp9);

610[InlineData(LanguageVersion.CSharp7)] 611[InlineData(LanguageVersion.CSharp8)] 612[InlineData(LanguageVersion.Latest)] 615public async Task Parameter10(LanguageVersion languageVersion) 630if (languageVersion.MapSpecifiedToEffectiveVersion() >= LanguageVersion.CSharp8) 640[InlineData(LanguageVersion.CSharp7)] 641[InlineData(LanguageVersion.CSharp8)] 642[InlineData(LanguageVersion.Latest)] 645public async Task Parameter11(LanguageVersion languageVersion) 661if (languageVersion.MapSpecifiedToEffectiveVersion() >= LanguageVersion.CSharp8) 671[InlineData(LanguageVersion.CSharp7)] 672[InlineData(LanguageVersion.CSharp8)] 673[InlineData(LanguageVersion.Latest)] 676public async Task Parameter12(LanguageVersion languageVersion) 692if (languageVersion.MapSpecifiedToEffectiveVersion() >= LanguageVersion.CSharp8) 2596[InlineData(LanguageVersion.CSharp7)] 2597[InlineData(LanguageVersion.CSharp8)] 2598[InlineData(LanguageVersion.Latest)] 2601public async Task TestUseLocalAsLocalFunctionParameter(LanguageVersion languageVersion) 2616if (languageVersion.MapSpecifiedToEffectiveVersion() >= LanguageVersion.CSharp8) 2627[InlineData(LanguageVersion.CSharp7)] 2628[InlineData(LanguageVersion.CSharp8)] 2629[InlineData(LanguageVersion.Latest)] 2632public async Task TestCompletionDoesNotUseLocalAsLocalFunctionVariable(LanguageVersion languageVersion)

3240var options = CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.Latest);

501parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp10), 541parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9), 582parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp10), 893parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp10),

58parseOptions: new CSharpParseOptions(LanguageVersion.CSharp10)); 81parseOptions: new CSharpParseOptions(LanguageVersion.CSharp10)); 103parseOptions: new CSharpParseOptions(LanguageVersion.CSharp9));

2712AssertFormatWithView(expected, code, parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp12)); 2737AssertFormatWithView(expected, code, parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp12)); 2762AssertFormatWithView(expected, code, parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp12)); 2782AssertFormatAfterTypeChar(code, expected, parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp12)); 2802AssertFormatAfterTypeChar(code, expected, parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp12)); 2822AssertFormatAfterTypeChar(code, expected, parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp12));

3331options: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp12)); 3351options: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp12)); 3372options: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp12)); 3393options: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp12));

1386parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp6),

3248Options.Regular.WithLanguageVersion(LanguageVersion.CSharp8), 3288Options.Regular.WithLanguageVersion(LanguageVersion.CSharp8), 8740Options.Regular.WithLanguageVersion(LanguageVersion.CSharp9), 8755Options.Regular.WithLanguageVersion(LanguageVersion.CSharp9), 8876Options.Regular.WithLanguageVersion(LanguageVersion.CSharp9), 8891Options.Regular.WithLanguageVersion(LanguageVersion.CSharp9), 8906Options.Regular.WithLanguageVersion(LanguageVersion.CSharp9), 8921Options.Regular.WithLanguageVersion(LanguageVersion.CSharp9), 8940Options.Regular.WithLanguageVersion(LanguageVersion.Preview), 9312Options.Regular.WithLanguageVersion(LanguageVersion.CSharp9), 9326Options.Regular.WithLanguageVersion(LanguageVersion.CSharp9), 9341Options.Regular.WithLanguageVersion(LanguageVersion.CSharp9), 9899await TestWithOptionsAsync(Options.Regular.WithLanguageVersion(LanguageVersion.CSharp11), source, 9914await TestWithOptionsAsync(Options.Regular.WithLanguageVersion(LanguageVersion.CSharp11), source, 9933await TestWithOptionsAsync(Options.Regular.WithLanguageVersion(LanguageVersion.CSharp11), source,

25protected 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));

3839CreateCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp6)).VerifyDiagnostics(

4003var 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));

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);

13662CreateCompilation(code, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp7_3)).VerifyDiagnostics( 13679CreateEmptyCompilation(code, references: WinRtRefs, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp7_3)).VerifyDiagnostics( 13705CreateCompilation(code, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp7_3)).VerifyDiagnostics( 13731CreateEmptyCompilation(code, references: WinRtRefs, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp7_3)).VerifyDiagnostics(

409var compilation = CreateEmptyCompilation(string.Empty, parseOptions: new CSharpParseOptions().WithLanguageVersion((LanguageVersion)10000)); 481var parseOptions = new CSharpParseOptions(LanguageVersion.Latest);

657[CombinatorialValues(LanguageVersion.CSharp13, LanguageVersionFacts.CSharpNext)] LanguageVersion languageVersion) 686if (languageVersion == LanguageVersion.CSharp13) 827[CombinatorialValues(LanguageVersion.CSharp13, LanguageVersionFacts.CSharpNext)] LanguageVersion languageVersion) 846if (languageVersion == LanguageVersion.CSharp13) 928Assert.Equal(languageVersion > LanguageVersion.CSharp13, ((SourcePropertySymbol)actualProperties[0]).UsesFieldKeyword); 929Assert.Equal(languageVersion > LanguageVersion.CSharp13, ((SourcePropertySymbol)actualProperties[1]).UsesFieldKeyword); 937[CombinatorialValues(LanguageVersion.CSharp13, LanguageVersionFacts.CSharpNext)] LanguageVersion languageVersion, bool useInit) 955if (languageVersion == LanguageVersion.CSharp13) 1029Assert.Equal(languageVersion > LanguageVersion.CSharp13, ((SourcePropertySymbol)actualProperties[0]).UsesFieldKeyword); 1030Assert.Equal(languageVersion > LanguageVersion.CSharp13, ((SourcePropertySymbol)actualProperties[1]).UsesFieldKeyword); 1039[CombinatorialValues(LanguageVersion.CSharp13, LanguageVersionFacts.CSharpNext)] LanguageVersion languageVersion) 1069if (languageVersion == LanguageVersion.CSharp13) 1136[CombinatorialValues(LanguageVersion.CSharp13, LanguageVersionFacts.CSharpNext)] LanguageVersion languageVersion) 1166if (languageVersion == LanguageVersion.CSharp13) 1455[CombinatorialValues(LanguageVersion.CSharp13, LanguageVersionFacts.CSharpNext)] LanguageVersion languageVersion, 8333[CombinatorialValues(LanguageVersion.CSharp13, LanguageVersionFacts.CSharpNext)] LanguageVersion languageVersion, 8366if (languageVersion == LanguageVersion.CSharp13) 8485[CombinatorialValues(LanguageVersion.CSharp12, LanguageVersion.CSharp13)] LanguageVersion languageVersion, 8512case (LanguageVersion.CSharp12, false): 8533case (LanguageVersion.CSharp12, true): 8548case (LanguageVersion.CSharp13, false): 8557case (LanguageVersion.CSharp13, true): 8575[CombinatorialValues(LanguageVersion.CSharp13, LanguageVersionFacts.CSharpNext)] LanguageVersion languageVersion, 8597if (languageVersion == LanguageVersion.CSharp13) 8650[CombinatorialValues(LanguageVersion.CSharp13, LanguageVersionFacts.CSharpNext)] LanguageVersion languageVersion, 8672if (languageVersion == LanguageVersion.CSharp13) 10177[CombinatorialValues(LanguageVersion.CSharp13, LanguageVersionFacts.CSharpNext)] LanguageVersion languageVersion) 10203if (languageVersion == LanguageVersion.CSharp13) 10281[CombinatorialValues(LanguageVersion.CSharp13, LanguageVersionFacts.CSharpNext)] LanguageVersion languageVersion) 10306if (languageVersion == LanguageVersion.CSharp13) 10348if (languageVersion == LanguageVersion.CSharp13) 10363if (languageVersion == LanguageVersion.CSharp13) 10378[CombinatorialValues(LanguageVersion.CSharp13, LanguageVersionFacts.CSharpNext)] LanguageVersion languageVersion)

21public static TheoryData<LanguageVersion> LangVersions() 23return new TheoryData<LanguageVersion>() 25LanguageVersion.CSharp13, 27LanguageVersion.Preview, 206public void BreakingChange_ExtensionMethodLookup_SpanVsIEnumerable_Workaround(LanguageVersion langVersion) 242public void BreakingChange_ExtensionMethodLookup_SpanVsIEnumerable_MethodConversion(LanguageVersion langVersion) 263public void BreakingChange_ExtensionMethodLookup_SpanVsIEnumerable_MethodConversion_Workaround(LanguageVersion langVersion) 321[CombinatorialLangVersions] LanguageVersion langVersion, 375public void BreakingChange_TypeInference_SpanVsIEnumerable_02_Workaround_AsEnumerable(LanguageVersion langVersion) 615public void BreakingChange_Conversion_SpanVsArray_Workaround_AsSpan(LanguageVersion langVersion) 729[CombinatorialLangVersions] LanguageVersion langVersion, 760[CombinatorialLangVersions] LanguageVersion langVersion, 788[CombinatorialLangVersions] LanguageVersion langVersion, 821[CombinatorialLangVersions] LanguageVersion langVersion, 903[CombinatorialLangVersions] LanguageVersion langVersion, 984[CombinatorialLangVersions] LanguageVersion langVersion, 1062public void Conversion_Array_Span_Implicit_IsOperator(LanguageVersion langVersion) 1089public void Conversion_Array_Span_Implicit_IsPattern(LanguageVersion langVersion) 1106public void Conversion_Array_Span_Implicit_SwitchPattern(LanguageVersion langVersion) 1125public void Conversion_Array_Span_Explicit_IsOperator(LanguageVersion langVersion) 1152public void Conversion_Array_Span_Explicit_IsPattern(LanguageVersion langVersion) 1169public void Conversion_Array_Span_Explicit_SwitchPattern(LanguageVersion langVersion) 1188public void Conversion_string_ReadOnlySpan_Implicit_IsOperator(LanguageVersion langVersion) 1215public void Conversion_string_ReadOnlySpan_Implicit_IsPattern(LanguageVersion langVersion) 1232public void Conversion_string_ReadOnlySpan_Implicit_SwitchPattern(LanguageVersion langVersion) 1910public void Conversion_Array_Span_Implicit_ConstantData(LanguageVersion langVersion) 1982public void Conversion_Array_Span_Implicit_ConstantData_NotWellKnownSpan(LanguageVersion langVersion) 2894public void Conversion_Array_Span_Implicit_UnrelatedElementType(LanguageVersion langVersion) 2909public void Conversion_Array_Span_Explicit_UnrelatedElementType(LanguageVersion langVersion) 2925public void Conversion_Array_ReadOnlySpan_Implicit_UnrelatedElementType(LanguageVersion langVersion) 2940public void Conversion_Span_Array_Implicit_UserDefined(LanguageVersion langVersion) 2970public void Conversion_Array_ReadOnlySpan_Explicit_UnrelatedElementType(LanguageVersion langVersion) 2986public void Conversion_Span_ReadOnlySpan_Implicit_UnrelatedElementType(LanguageVersion langVersion) 3002public void Conversion_Span_ReadOnlySpan_Explicit_UnrelatedElementType(LanguageVersion langVersion) 3018public void Conversion_Span_ReadOnlySpan_Implicit_Struct(LanguageVersion langVersion) 3031public void Conversion_Span_ReadOnlySpan_Implicit_Struct_Generic(LanguageVersion langVersion) 3048public void Conversion_Span_ReadOnlySpan_Implicit_Struct_Generic_NullabilityAnnotation(LanguageVersion langVersion) 3059var targetType = langVersion > LanguageVersion.CSharp13 ? "System.Span<S<string>>" : "System.ReadOnlySpan<S<string>>"; 3067public void Conversion_ReadOnlySpan_ReadOnlySpan_Implicit_UnrelatedElementType(LanguageVersion langVersion) 3083public void Conversion_ReadOnlySpan_ReadOnlySpan_Explicit_UnrelatedElementType(LanguageVersion langVersion) 3099public void Conversion_ReadOnlySpan_ReadOnlySpan_Implicit_Struct(LanguageVersion langVersion) 3112public void Conversion_ReadOnlySpan_ReadOnlySpan_Implicit_Struct_Generic(LanguageVersion langVersion) 3129public void Conversion_ReadOnlySpan_ReadOnlySpan_Implicit_Struct_Generic_NullabilityAnnotation(LanguageVersion langVersion) 3147public void Conversion_ReadOnlySpan_ReadOnlySpan_Implicit_UserDefined_01(LanguageVersion langVersion) 3225[CombinatorialLangVersions] LanguageVersion langVersion, 3243[CombinatorialLangVersions] LanguageVersion langVersion, 3260public void Conversion_ReadOnlySpan_Span_Implicit_UserDefined(LanguageVersion langVersion) 3291public void Conversion_ReadOnlySpan_Span_Explicit_UserDefined(LanguageVersion langVersion) 3322public void Conversion_ReadOnlySpan_Span_Explicit_UserDefined_Covariant(LanguageVersion langVersion) 3353public void Conversion_string_ReadOnlySpan_Implicit_UnrelatedElementType(LanguageVersion langVersion) 3374public void Conversion_string_Span_Implicit(LanguageVersion langVersion) 3390public void Conversion_string_Span_Explicit(LanguageVersion langVersion) 3406public void Conversion_string_Span_Implicit_UserDefined(LanguageVersion langVersion) 3436public void Conversion_ReadOnlySpan_string_Implicit_UserDefined(LanguageVersion langVersion) 3712public void Conversion_string_ReadOnlySpan_Implicit_NullableAnalysis(LanguageVersion langVersion) 3819public void Conversion_Array_Span_Implicit_NullableAnalysis_NestedNullability(LanguageVersion langVersion) 3847=> langVersion > LanguageVersion.CSharp13 ? $"System.Span<S<{inner}>>" : $"S<{inner}>[]"; 3851public void Conversion_Array_ReadOnlySpan_Implicit_NullableAnalysis_NestedNullability(LanguageVersion langVersion) 3887=> langVersion > LanguageVersion.CSharp13 ? $"System.ReadOnlySpan<S<{inner}>>" : $"S<{inner}>[]"; 3947public void Conversion_ReadOnlySpan_ReadOnlySpan_Implicit_NullableAnalysis_NestedNullability(LanguageVersion langVersion) 3984public void Conversion_Array_ReadOnlySpan_Implicit_NullableAnalysis_NestedNullability_Covariant(LanguageVersion langVersion) 3995var targetType = langVersion > LanguageVersion.CSharp13 ? "System.ReadOnlySpan<I<object>>" : "I<object>[]"; 4032public void Conversion_Array_Span_Implicit_NullableAnalysis_Outer(LanguageVersion langVersion) 4187[CombinatorialLangVersions] LanguageVersion langVersion, 4261public void Conversion_Array_Span_Implicit_RefReturn(LanguageVersion langVersion) 4321public void Conversion_Array_Span_Opposite_Implicit(LanguageVersion langVersion) 4348public void Conversion_Span_ReadOnlySpan_Opposite_Implicit(LanguageVersion langVersion) 4364public void Conversion_ReadOnlySpan_ReadOnlySpan_Opposite_Implicit(LanguageVersion langVersion) 4380public void Conversion_string_ReadOnlySpan_Opposite_Implicit(LanguageVersion langVersion) 4396public void Conversion_Array_Span_Opposite_Explicit(LanguageVersion langVersion) 4423public void Conversion_Span_ReadOnlySpan_Opposite_Explicit(LanguageVersion langVersion) 4439public void Conversion_ReadOnlySpan_ReadOnlySpan_Opposite_Explicit(LanguageVersion langVersion) 4455public void Conversion_string_ReadOnlySpan_Opposite_Explicit(LanguageVersion langVersion) 4471public void Conversion_Array_Span_Opposite_Explicit_UserDefined(LanguageVersion langVersion) 4501public void Conversion_Span_ReadOnlySpan_Opposite_Explicit_UserDefined(LanguageVersion langVersion) 4533public void Conversion_string_ReadOnlySpan_Opposite_Explicit_UserDefined(LanguageVersion langVersion) 4564public void Conversion_Array_Span_Implicit_Params(LanguageVersion langVersion) 4690public void Conversion_Span_ReadOnlySpan_Implicit_Params(LanguageVersion langVersion) 4840public void Conversion_Array_Span_Implicit_Multidimensional(LanguageVersion langVersion) 4875public void Conversion_Array_Span_Implicit_MethodGroup_ReturnType(LanguageVersion langVersion) 4899public void Conversion_Array_Span_Implicit_MethodGroup_ParameterType(LanguageVersion langVersion) 5129public void Conversion_Array_Span_Implicit_MethodGroup_FunctionPointer(LanguageVersion langVersion) 5267public void Conversion_Array_Span_Implicit_ExpressionTree_02(LanguageVersion langVersion) 5317public void Conversion_Array_ReadOnlySpan_Implicit_ExpressionTree_02(LanguageVersion langVersion) 5396[CombinatorialLangVersions] LanguageVersion langVersion, 5419public void Conversion_Span_ReadOnlySpan_Implicit_ExpressionTree(LanguageVersion langVersion) 5517public void Conversion_string_ReadOnlySpan_Implicit_ExpressionTree(LanguageVersion langVersion) 5537[CombinatorialLangVersions] LanguageVersion langVersion, 5567[CombinatorialLangVersions] LanguageVersion langVersion, 5599[CombinatorialLangVersions] LanguageVersion langVersion, 5711public void Conversion_Array_ReadOnlySpan_Interface_Contravariant(LanguageVersion langVersion) 5730public void Conversion_Array_ReadOnlySpan_Interface_Contravariant_Cast(LanguageVersion langVersion) 5764public void Conversion_Array_ReadOnlySpan_Covariant_ValueType(LanguageVersion langVersion) 5781public void Conversion_Array_ReadOnlySpan_Covariant_TypeParameter(LanguageVersion langVersion) 5810public void Conversion_Array_ReadOnlySpan_TypeParameter_NullableValueType_01(LanguageVersion langVersion) 5827public void Conversion_Array_ReadOnlySpan_TypeParameter_NullableValueType_02(LanguageVersion langVersion) 5846[CombinatorialLangVersions] LanguageVersion langVersion) 5874public void Conversion_Array_Span_Variance_02(LanguageVersion langVersion) 6193[CombinatorialLangVersions] LanguageVersion langVersion)

3706public void OverloadResolution_07([CombinatorialValues(LanguageVersion.CSharp11, LanguageVersion.CSharp12, LanguageVersion.Preview)] LanguageVersion languageVersion) 3729languageVersion == LanguageVersion.CSharp11

134[InlineData(LanguageVersion.CSharp11)] 135[InlineData(LanguageVersion.Preview)] 136public void LanguageVersionDiagnostics(LanguageVersion languageVersion) 151if (languageVersion == LanguageVersion.CSharp11) 2290[InlineData(LanguageVersion.Preview)] 2291[InlineData(LanguageVersion.CSharp13)] 2292[InlineData(LanguageVersion.CSharp12)] 2293public void BetterConversionFromExpression_09(LanguageVersion version) 22697var comp = CreateCompilation(new[] { sourceA, CollectionBuilderAttributeDefinition }, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp10), targetFramework: TargetFramework.Net60);

50var compilation = CreateCompilation(text, options: TestOptions.ReleaseExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp6)); 82var compilation = CreateCompilation(text, options: TestOptions.ReleaseDll, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp6)); 599var compilation = CreateCompilation(text, options: TestOptions.ReleaseExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp6));

2093var compilation = CreateCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9), options: TestOptions.DebugExe); 2165var compilation = CreateCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9), options: TestOptions.DebugExe); 2237var compilation = CreateCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9), options: TestOptions.DebugExe); 2286var compilation = CreateCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9), options: TestOptions.DebugExe); 2335var compilation = CreateCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9), options: TestOptions.DebugExe); 2366var compilation = CreateCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9), options: TestOptions.ReleaseExe); 2424var compilation = CreateCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9), options: TestOptions.ReleaseExe); 2470var compilation = CreateCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9)); 2501var compilation = CreateCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9)); 2541var compilation = CreateCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9), options: TestOptions.DebugExe); 2579var compilation = CreateCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9), options: TestOptions.DebugExe); 2608var compilation = CreateCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9)); 2650var compilation = CreateCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9), options: TestOptions.DebugExe); 2666var compilation = CreateCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9)); 2692var compilation = CreateCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9)); 2720var compilation = CreateCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9)); 2743var compilation = CreateCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9)); 2814var compilation = CreateCompilation(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9)); 2873var compilation = CreateCompilation(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9)); 2914var compilation = CreateCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9)); 2971var compilation = CreateCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9)); 3000var compilation = CreateCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9)); 3071var compilation = CreateCompilation(source, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9)); 3140var compilation = CreateCompilation(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9)); 3278var compilation = CreateCompilation(source + _iTupleSource, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9)); 3366var compilation = CreateCompilation(source + _iTupleSource, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9)); 4617var compilation = CreateCompilation(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9)); 4783var compilation = CreateCompilation(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9)); 4875var compilation = CreateCompilation(source, options: TestOptions.DebugDll, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9)); 4969var compilation = CreateCompilation(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9)); 5253var compilation = CreateCompilation(source, options: TestOptions.DebugExe.WithAllowUnsafe(true), parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9)); 5322var compilation = CreateCompilation(source, options: TestOptions.DebugExe.WithAllowUnsafe(true), parseOptions: TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9));

256=> options.LanguageVersion() >= LanguageVersion.CSharp7_2;

64ParseOptions: CSharpParseOptions { LanguageVersion: >= LanguageVersion.CSharp8 },

56if (root.SyntaxTree.Options.LanguageVersion() < LanguageVersion.CSharp9) 384if (names.Length > 1 && names[0].SyntaxTree.Options.LanguageVersion() >= LanguageVersion.CSharp10)

103if (languageVersion < LanguageVersion.CSharp7_2 && token.IsMandatoryNamedParameterPosition())

31(version >= LanguageVersion.CSharp7 ? Feature.SourcePattern | Feature.IsTypePattern | Feature.CaseGuard : 0) | 32(version >= LanguageVersion.CSharp8 ? Feature.SwitchExpression : 0) | 33(version >= LanguageVersion.CSharp9 ? Feature.RelationalPattern | Feature.OrPattern | Feature.AndPattern | Feature.TypePattern : 0);

36if (document.Project.ParseOptions!.LanguageVersion() < LanguageVersion.CSharp9 ||

172=> node.SyntaxTree.Options.LanguageVersion() < LanguageVersion.CSharp8; 219if (LocalFunction && (!Options.PreferStaticLocalFunction.Value || languageVersion < LanguageVersion.CSharp8))

101options.LanguageVersion() < LanguageVersion.CSharp8)

107if (options.LanguageVersion < LanguageVersion.CSharp8)

90if (parseOptions.LanguageVersion < LanguageVersion.CSharp8)

63CSharpCodeGenerationOptions options, LanguageVersion languageVersion, 116CSharpCodeGenerationOptions options, LanguageVersion languageVersion, 166GetAndSetMethods getAndSetMethods, CSharpCodeGenerationOptions options, LanguageVersion languageVersion, CancellationToken cancellationToken) 175CSharpCodeGenerationOptions options, LanguageVersion languageVersion, 236CSharpCodeGenerationOptions options, LanguageVersion languageVersion, CancellationToken cancellationToken)

60LanguageVersion languageVersion, 104LanguageVersion languageVersion, 162LanguageVersion languageVersion, 251LanguageVersion languageVersion,

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

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

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

35if (context.Compilation.LanguageVersion() < LanguageVersion.CSharp8)

29if (node.GetLanguageVersion() < LanguageVersion.CSharp6)

68if (csOptions.LanguageVersion < LanguageVersion.CSharp7)

52if (ifStatement.SyntaxTree.Options.LanguageVersion() < LanguageVersion.CSharp6)

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

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

38if (compilation.LanguageVersion() < LanguageVersion.CSharp8)

34if (compilation.LanguageVersion() < LanguageVersion.CSharp7_2)

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

37if (compilation.LanguageVersion < LanguageVersion.CSharp8)

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

45if (compilationContext.Compilation.LanguageVersion() < LanguageVersion.CSharp10)

43=> compilation.LanguageVersion() >= LanguageVersion.CSharp6; 46=> compilation.LanguageVersion() >= LanguageVersion.CSharp6; 49=> compilation.LanguageVersion() >= LanguageVersion.Preview;

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

27options.LanguageVersion() >= LanguageVersion.CSharp8;

46if (context.Compilation.LanguageVersion() < LanguageVersion.CSharp8)

192if (languageVersion < LanguageVersion.CSharp7) 213if (languageVersion < LanguageVersion.CSharp6)

57languageVersion < LanguageVersion.CSharp7) 67ExpressionBodyPreference preference, LambdaExpressionSyntax declaration, LanguageVersion languageVersion, CancellationToken cancellationToken) 109LanguageVersion languageVersion,

44if (syntaxTree.Options.LanguageVersion() < LanguageVersion.CSharp9)