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);

27private static readonly CSharpParseOptions ParseOptions = new CSharpParseOptions(LanguageVersion.Preview)

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

35LanguageVersion = LanguageVersion.CSharp11, 60LanguageVersion = LanguageVersion.CSharp11, 82LanguageVersion = LanguageVersion.CSharp11, 104LanguageVersion = LanguageVersion.CSharp11,

28LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp9, 66LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp9, 108LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp9, 139LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp9,

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

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

1515var requiredVersion = MessageID.IDS_FeatureFieldKeyword.RequiredVersion(); 4581LanguageVersion requiredVersion = MessageID.IDS_FeatureNestedStackalloc.RequiredVersion(); 10993if (Compilation.LanguageVersion < LanguageVersion.CSharp13)

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

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

1315(binder.Compilation.LanguageVersion > LanguageVersion.CSharp12 || member.ContainingModule == binder.Compilation.SourceModule))) 3039if (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(); 274LanguageVersion availableVersion = LanguageVersion; 275LanguageVersion requiredVersion = feature.RequiredVersion();

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

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

2462var requiredVersion = MessageID.IDS_FeatureDefaultTypeParameterConstraint.RequiredVersion();

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

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

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

5080var languageVersion = ((CSharpParseOptions)this.GetFirstLocation().SourceTree!.Options).LanguageVersion; 5081var requiredVersion = MessageID.IDS_FeatureSealedToStringInRecord.RequiredVersion();

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

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

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

274var languageVersion = this.DeclaringCompilation.LanguageVersion;

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

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

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

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

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

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

67if (csOptions.LanguageVersion < LanguageVersion.CSharp7)

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

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

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

37if (compilation.LanguageVersion() < LanguageVersion.CSharp8)

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

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

36if (compilation.LanguageVersion < LanguageVersion.CSharp8)

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

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

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

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

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

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

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

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

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

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

63if (compilation.LanguageVersion < LanguageVersion.CSharp8)

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

9public static LanguageVersion LanguageVersion(this Compilation compilation)

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

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

9public static LanguageVersion LanguageVersion(this ParseOptions options)

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

25public static LanguageVersion GetLanguageVersion(this SyntaxNode node)

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

19if (parseOptions.LanguageVersion < LanguageVersion.CSharp7_1)

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

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

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

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

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

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

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

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

90if (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,

42if (semanticModel.Compilation.LanguageVersion().MapSpecifiedToEffectiveVersion() >= LanguageVersion.CSharp8) 64var isLanguageVersionGreaterOrEqualToCSharp8 = (semanticModel.Compilation as CSharpCompilation)?.LanguageVersion >= LanguageVersion.CSharp8;

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

200LanguageVersion = LanguageVersion.CSharp9, 223LanguageVersion = LanguageVersion.CSharp12, 560LanguageVersion = LanguageVersion.CSharp10, 587LanguageVersion = LanguageVersion.CSharp12, 612LanguageVersion = LanguageVersion.CSharp12, 632LanguageVersion = LanguageVersion.CSharp12, 642LanguageVersion = LanguageVersion.CSharp12, 670LanguageVersion = LanguageVersion.CSharp12, 691LanguageVersion = LanguageVersion.CSharp12, 715LanguageVersion = LanguageVersion.CSharp12, 764LanguageVersion = LanguageVersion.CSharp12, 812LanguageVersion = LanguageVersion.CSharp12, 860LanguageVersion = LanguageVersion.CSharp12, 886LanguageVersion = 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, 83LanguageVersion = LanguageVersion.CSharp10, 105LanguageVersion = LanguageVersion.CSharp10, 132LanguageVersion = LanguageVersion.CSharp10, 159LanguageVersion = LanguageVersion.CSharp10, 188LanguageVersion = LanguageVersion.CSharp10, 215LanguageVersion = LanguageVersion.CSharp10, 244LanguageVersion = LanguageVersion.CSharp10, 271LanguageVersion = LanguageVersion.CSharp10, 305LanguageVersion = LanguageVersion.CSharp10, 338LanguageVersion = LanguageVersion.CSharp10, 363LanguageVersion = LanguageVersion.CSharp10, 387LanguageVersion = LanguageVersion.CSharp10, 412LanguageVersion = LanguageVersion.CSharp10, 436LanguageVersion = LanguageVersion.CSharp10, 464LanguageVersion = LanguageVersion.CSharp10, 494LanguageVersion = LanguageVersion.CSharp10, 522LanguageVersion = LanguageVersion.CSharp10, 551LanguageVersion = LanguageVersion.CSharp10, 581LanguageVersion = LanguageVersion.CSharp10,

31LanguageVersion = LanguageVersion.CSharp9, 49LanguageVersion = LanguageVersion.CSharp10, 70LanguageVersion = LanguageVersion.CSharp10, 91LanguageVersion = LanguageVersion.CSharp10, 113LanguageVersion = LanguageVersion.CSharp10, 134LanguageVersion = LanguageVersion.CSharp10, 154LanguageVersion = LanguageVersion.CSharp10, 174LanguageVersion = LanguageVersion.CSharp10, 206LanguageVersion = LanguageVersion.CSharp10, 230LanguageVersion = LanguageVersion.CSharp10, 258LanguageVersion = LanguageVersion.CSharp10, 288LanguageVersion = LanguageVersion.CSharp10, 317LanguageVersion = LanguageVersion.CSharp10, 345LanguageVersion = LanguageVersion.CSharp10, 375LanguageVersion = LanguageVersion.CSharp10, 405LanguageVersion = LanguageVersion.CSharp10, 446LanguageVersion = LanguageVersion.CSharp10, 480LanguageVersion = LanguageVersion.CSharp10, 514LanguageVersion = LanguageVersion.CSharp10, 562LanguageVersion = LanguageVersion.CSharp10, 610LanguageVersion = LanguageVersion.CSharp10, 660LanguageVersion = LanguageVersion.CSharp10, 714LanguageVersion = LanguageVersion.CSharp12, 769LanguageVersion = LanguageVersion.CSharp12, 824LanguageVersion = LanguageVersion.CSharp12, 844LanguageVersion = LanguageVersion.CSharp10, 865LanguageVersion = LanguageVersion.CSharp10, 893LanguageVersion = LanguageVersion.CSharp10, 914LanguageVersion = LanguageVersion.CSharp10, 942LanguageVersion = LanguageVersion.CSharp10, 963LanguageVersion = LanguageVersion.CSharp10, 993LanguageVersion = LanguageVersion.CSharp10, 1025LanguageVersion = LanguageVersion.CSharp10, 1054LanguageVersion = LanguageVersion.CSharp10, 1084LanguageVersion = LanguageVersion.CSharp10, 1156LanguageVersion = LanguageVersion.CSharp11, 1226LanguageVersion = LanguageVersion.CSharp11, 1298LanguageVersion = LanguageVersion.CSharp11, 1384LanguageVersion = LanguageVersion.CSharp11, 1456LanguageVersion = LanguageVersion.CSharp11, 1528LanguageVersion = LanguageVersion.CSharp11, 1549LanguageVersion = LanguageVersion.CSharp10, 1570LanguageVersion = LanguageVersion.CSharp10,

27private static readonly LanguageVersion CSharp9 = LanguageVersion.CSharp9; 2092LanguageVersion = LanguageVersion.CSharp9, 2133LanguageVersion = LanguageVersion.CSharp9, 2453LanguageVersion = LanguageVersion.CSharp9, 2510LanguageVersion = LanguageVersion.CSharp9,

154LanguageVersion = LanguageVersion.CSharp10,

21private static readonly LanguageVersion CSharp14 = LanguageVersion.Preview; 254LanguageVersion = LanguageVersion.CSharp13, 296LanguageVersion = LanguageVersion.CSharp13, 386LanguageVersion = LanguageVersion.CSharp13, 440LanguageVersion = LanguageVersion.CSharp13, 519LanguageVersion = 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, 956LanguageVersion = LanguageVersion.CSharp12,

8820parseOptions: TestOptions.Regular.WithLanguageVersion(CodeAnalysis.CSharp.LanguageVersion.CSharp6)); 8852parseOptions: TestOptions.Regular.WithLanguageVersion(CodeAnalysis.CSharp.LanguageVersion.CSharp6)); 8884parseOptions: TestOptions.Regular.WithLanguageVersion(CodeAnalysis.CSharp.LanguageVersion.CSharp6)); 8916parseOptions: TestOptions.Regular.WithLanguageVersion(CodeAnalysis.CSharp.LanguageVersion.CSharp6));

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

87LanguageVersion = LanguageVersion.CSharp12, 125LanguageVersion = LanguageVersion.CSharp12, 164LanguageVersion = LanguageVersion.CSharp12, 214LanguageVersion = LanguageVersion.CSharp9, 4058LanguageVersion = LanguageVersion.CSharp7_2, 4097LanguageVersion = LanguageVersion.CSharp8, 8308LanguageVersion = LanguageVersion.CSharp7_1, 10396LanguageVersion = LanguageVersion.CSharp9, 10519LanguageVersion = LanguageVersion.CSharp12, 10552LanguageVersion = LanguageVersion.CSharp12, 10585LanguageVersion = LanguageVersion.CSharp12, 10618LanguageVersion = LanguageVersion.CSharp12, 10655LanguageVersion = LanguageVersion.CSharp12, 10686LanguageVersion = LanguageVersion.CSharp9, 10750LanguageVersion = LanguageVersion.CSharp9, 10787LanguageVersion = LanguageVersion.CSharp9, 10824LanguageVersion = LanguageVersion.CSharp9, 10998LanguageVersion = LanguageVersion.CSharp5, 11045LanguageVersion = LanguageVersion.CSharp12, 11080LanguageVersion = LanguageVersion.CSharp12, 11116LanguageVersion = LanguageVersion.CSharp12, 11152LanguageVersion = LanguageVersion.CSharp12, 11185LanguageVersion = LanguageVersion.CSharp12, 11218LanguageVersion = LanguageVersion.Preview, 11252LanguageVersion = LanguageVersion.Preview, 11286LanguageVersion = LanguageVersion.CSharp12, 11326LanguageVersion = LanguageVersion.CSharp12, 11360LanguageVersion = LanguageVersion.Preview, 11396LanguageVersion = LanguageVersion.Preview, 11431LanguageVersion = LanguageVersion.CSharp12, 11465LanguageVersion = LanguageVersion.CSharp12, 11500LanguageVersion = LanguageVersion.CSharp12, 11535LanguageVersion = LanguageVersion.CSharp12, 11568LanguageVersion = LanguageVersion.CSharp12, 11601LanguageVersion = LanguageVersion.CSharp12, 11636LanguageVersion = LanguageVersion.CSharp12, 11671LanguageVersion = LanguageVersion.CSharp12, 11746LanguageVersion = LanguageVersion.CSharp12, 11820LanguageVersion = LanguageVersion.CSharp12, 11894LanguageVersion = LanguageVersion.CSharp7_3, 11933LanguageVersion = LanguageVersion.CSharp7_2, 11973LanguageVersion = LanguageVersion.CSharp12, 12120LanguageVersion = LanguageVersion.CSharp12, 12316LanguageVersion = LanguageVersion.CSharp9, 12361LanguageVersion = LanguageVersion.CSharp10,

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

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

26LanguageVersion = LanguageVersion.CSharp9 53LanguageVersion = LanguageVersion.CSharp8 80LanguageVersion = LanguageVersion.CSharp9,

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

135LanguageVersion = LanguageVersion.CSharp11, 159LanguageVersion = LanguageVersion.CSharp11, 183LanguageVersion = LanguageVersion.CSharp11, 201LanguageVersion = LanguageVersion.CSharp11, 234LanguageVersion = LanguageVersion.CSharp11, 256LanguageVersion = LanguageVersion.CSharp11, 283LanguageVersion = LanguageVersion.CSharp11, 302LanguageVersion = LanguageVersion.CSharp11, 329LanguageVersion = LanguageVersion.CSharp11, 348LanguageVersion = LanguageVersion.CSharp11, 374LanguageVersion = LanguageVersion.CSharp11, 407LanguageVersion = LanguageVersion.CSharp11, 429LanguageVersion = LanguageVersion.CSharp11, 447LanguageVersion = LanguageVersion.CSharp10, 466LanguageVersion = LanguageVersion.CSharp11, 484LanguageVersion = LanguageVersion.CSharp11, 510LanguageVersion = LanguageVersion.CSharp11, 536LanguageVersion = LanguageVersion.CSharp11, 560LanguageVersion = LanguageVersion.CSharp11, 584LanguageVersion = LanguageVersion.CSharp11, 610LanguageVersion = LanguageVersion.CSharp11, 634LanguageVersion = LanguageVersion.CSharp11,

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

442LanguageVersion = LanguageVersion.CSharp7, 976LanguageVersion = LanguageVersion.CSharp10, 1378LanguageVersion = LanguageVersion.CSharp12, 1412LanguageVersion = LanguageVersion.CSharp12, 1446LanguageVersion = LanguageVersion.CSharp12, 1504LanguageVersion = LanguageVersion.CSharp12, 1562LanguageVersion = LanguageVersion.CSharp12, 1620LanguageVersion = LanguageVersion.CSharp12, 1678LanguageVersion = LanguageVersion.CSharp12, 1698LanguageVersion = LanguageVersion.CSharp12, 1718LanguageVersion = LanguageVersion.CSharp12, 1738LanguageVersion = LanguageVersion.CSharp12, 1761LanguageVersion = LanguageVersion.CSharp12, 1784LanguageVersion = LanguageVersion.CSharp12, 1809LanguageVersion = LanguageVersion.CSharp12, 1850LanguageVersion = LanguageVersion.CSharp12, 1877LanguageVersion = LanguageVersion.CSharp12, 1895LanguageVersion = LanguageVersion.CSharp12, 1936LanguageVersion = LanguageVersion.CSharp12, 1977LanguageVersion = LanguageVersion.CSharp12, 2008LanguageVersion = LanguageVersion.CSharp12, 2028LanguageVersion = LanguageVersion.CSharp12, 2048LanguageVersion = LanguageVersion.CSharp12, 2075LanguageVersion = LanguageVersion.CSharp12, 2119LanguageVersion = LanguageVersion.CSharp12, 2146LanguageVersion = LanguageVersion.CSharp12, 2186LanguageVersion = LanguageVersion.CSharp12, 2234LanguageVersion = LanguageVersion.CSharp12, 2284LanguageVersion = LanguageVersion.CSharp12, 2334LanguageVersion = LanguageVersion.CSharp12, 2394LanguageVersion = LanguageVersion.CSharp12, 2430LanguageVersion = LanguageVersion.CSharp12, 2460LanguageVersion = LanguageVersion.CSharp12, 2490LanguageVersion = LanguageVersion.CSharp12, 2524LanguageVersion = 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, 377LanguageVersion = LanguageVersion.CSharp10

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

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

227LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 297LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 694LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 737LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8,

426LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 441LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 462LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 484LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 506LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 620LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 640LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 674LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 712LanguageVersion = Microsoft.CodeAnalysis.CSharp.LanguageVersion.CSharp8, 754LanguageVersion = 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,

5746LanguageVersion = LanguageVersion.CSharp7_1, 5768LanguageVersion = LanguageVersion.CSharp7_1, 5790LanguageVersion = LanguageVersion.CSharp7_1, 5825LanguageVersion = LanguageVersion.CSharp7_1, 5873LanguageVersion = LanguageVersion.CSharp7_1, 5895LanguageVersion = LanguageVersion.CSharp7_1, 5917LanguageVersion = LanguageVersion.CSharp7_1, 5952LanguageVersion = LanguageVersion.CSharp7_1, 5987LanguageVersion = LanguageVersion.CSharp7_1, 6005LanguageVersion = LanguageVersion.CSharp7_1, 6023LanguageVersion = LanguageVersion.CSharp7_1, 6041LanguageVersion = LanguageVersion.CSharp7_1, 6068LanguageVersion = LanguageVersion.CSharp7_1, 6088LanguageVersion = LanguageVersion.CSharp10, 6108LanguageVersion = LanguageVersion.CSharp10, 8148LanguageVersion = LanguageVersion.CSharp9, 8217LanguageVersion = LanguageVersion.CSharp8 8244LanguageVersion = LanguageVersion.CSharp9, 8262LanguageVersion = LanguageVersion.CSharp8 8289LanguageVersion = LanguageVersion.CSharp9, 8307LanguageVersion = LanguageVersion.CSharp8, 8334LanguageVersion = LanguageVersion.CSharp9, 8403LanguageVersion = LanguageVersion.CSharp8 8430LanguageVersion = LanguageVersion.CSharp9, 8448LanguageVersion = LanguageVersion.CSharp8 8475LanguageVersion = LanguageVersion.CSharp9, 8493LanguageVersion = LanguageVersion.CSharp8 8520LanguageVersion = LanguageVersion.CSharp9, 8693LanguageVersion = LanguageVersion.CSharp9, 9513LanguageVersion = LanguageVersion.CSharp9 9531LanguageVersion = LanguageVersion.CSharp9 9556LanguageVersion = LanguageVersion.CSharp9 9574LanguageVersion = LanguageVersion.CSharp9 9592LanguageVersion = LanguageVersion.CSharp9 9674LanguageVersion = LanguageVersion.CSharp9 9694LanguageVersion = LanguageVersion.CSharp9 9714LanguageVersion = LanguageVersion.CSharp9 9743LanguageVersion = LanguageVersion.CSharp9 9773LanguageVersion = LanguageVersion.CSharp9 9791LanguageVersion = LanguageVersion.CSharp9, 9814LanguageVersion = LanguageVersion.CSharp9, 9847LanguageVersion = LanguageVersion.CSharp9, 9872LanguageVersion = LanguageVersion.CSharp9, 9892LanguageVersion = LanguageVersion.CSharp9, 9911LanguageVersion = LanguageVersion.CSharp9, 10743LanguageVersion = LanguageVersion.CSharp9, 10782LanguageVersion = LanguageVersion.CSharp9, 11482LanguageVersion = LanguageVersion.CSharp10, 11920public async Task DoNotRemoveMethodGroupToSpecificDelegateType(LanguageVersion version) 11974LanguageVersion = LanguageVersion.CSharp10, 12008LanguageVersion = LanguageVersion.CSharp10, 12031LanguageVersion = LanguageVersion.CSharp10, 12052LanguageVersion = LanguageVersion.CSharp10, 12072LanguageVersion = LanguageVersion.CSharp10, 12092LanguageVersion = LanguageVersion.CSharp10, 12114LanguageVersion = LanguageVersion.CSharp10, 12135LanguageVersion = LanguageVersion.CSharp10, 12150LanguageVersion = LanguageVersion.CSharp10, 12171LanguageVersion = LanguageVersion.CSharp10, 12194LanguageVersion = LanguageVersion.CSharp10, 12212LanguageVersion = LanguageVersion.CSharp10, 12230LanguageVersion = LanguageVersion.CSharp10, 12253LanguageVersion = LanguageVersion.CSharp10, 12275LanguageVersion = LanguageVersion.CSharp10, 12305LanguageVersion = LanguageVersion.CSharp10, 12354LanguageVersion = LanguageVersion.CSharp10, 12394LanguageVersion = LanguageVersion.CSharp10, 12420LanguageVersion = LanguageVersion.CSharp10, 12466LanguageVersion = LanguageVersion.CSharp10, 12510LanguageVersion = LanguageVersion.CSharp10, 12528LanguageVersion = LanguageVersion.CSharp10, 12559LanguageVersion = LanguageVersion.CSharp10, 12590LanguageVersion = LanguageVersion.CSharp10, 12621LanguageVersion = LanguageVersion.CSharp10, 12652LanguageVersion = LanguageVersion.CSharp10, 12683LanguageVersion = LanguageVersion.CSharp10, 12714LanguageVersion = LanguageVersion.CSharp10, 12732LanguageVersion = LanguageVersion.CSharp10, 12757LanguageVersion = LanguageVersion.CSharp10, 12791LanguageVersion = LanguageVersion.CSharp10, 12824LanguageVersion = LanguageVersion.CSharp10, 12843LanguageVersion = LanguageVersion.CSharp10, 12897LanguageVersion = LanguageVersion.CSharp10, 13400LanguageVersion = LanguageVersion.CSharp12, 13418LanguageVersion = LanguageVersion.CSharp12, 13443LanguageVersion = LanguageVersion.CSharp12, 13470LanguageVersion = LanguageVersion.CSharp12, 13503LanguageVersion = LanguageVersion.CSharp12, 13526LanguageVersion = LanguageVersion.CSharp12, 13556LanguageVersion = LanguageVersion.CSharp12, 13600LanguageVersion = LanguageVersion.CSharp12, 13637LanguageVersion = LanguageVersion.CSharp12, 13715LanguageVersion = LanguageVersion.CSharp12, 13755LanguageVersion = LanguageVersion.CSharp12, 13776LanguageVersion = LanguageVersion.CSharp12, 13797LanguageVersion = LanguageVersion.CSharp12, 13816LanguageVersion = LanguageVersion.CSharp12, 13835LanguageVersion = LanguageVersion.CSharp12, 13854LanguageVersion = LanguageVersion.CSharp12, 13875LanguageVersion = LanguageVersion.CSharp12, 13896LanguageVersion = LanguageVersion.CSharp12, 13917LanguageVersion = LanguageVersion.CSharp12, 13940LanguageVersion = LanguageVersion.CSharp12, 13972LanguageVersion = LanguageVersion.CSharp12, 14004LanguageVersion = 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,

478LanguageVersion = LanguageVersion.CSharp10, 631LanguageVersion = LanguageVersion.CSharp10, 1026LanguageVersion = LanguageVersion.CSharp5, 1105LanguageVersion = LanguageVersion.CSharp5, 2096LanguageVersion = LanguageVersion.CSharp10,

28LanguageVersion version = LanguageVersion.CSharp12, 45LanguageVersion version = LanguageVersion.CSharp12, 66""", LanguageVersion.CSharp10); 122LanguageVersion = LanguageVersion.CSharp12,

917LanguageVersion = LanguageVersion.CSharp9, 938LanguageVersion = LanguageVersion.CSharp9, 961LanguageVersion = LanguageVersion.CSharp9, 990LanguageVersion = LanguageVersion.CSharp9, 1016LanguageVersion = LanguageVersion.CSharp9, 1041LanguageVersion = LanguageVersion.CSharp9, 1066LanguageVersion = LanguageVersion.CSharp9,

444LanguageVersion = LanguageVersion.CSharp9, 472LanguageVersion = LanguageVersion.CSharp9, 491LanguageVersion = LanguageVersion.CSharp9, 518LanguageVersion = LanguageVersion.CSharp9, 1174LanguageVersion = LanguageVersion.CSharp9, 3119LanguageVersion = LanguageVersion.CSharp9, 3265LanguageVersion = LanguageVersion.CSharp13, 3363LanguageVersion = LanguageVersion.CSharp13, 3397LanguageVersion = LanguageVersion.CSharp13, 3420LanguageVersion = LanguageVersion.CSharp13, 3444LanguageVersion = LanguageVersion.CSharp13, 3475LanguageVersion = LanguageVersion.CSharp13, 3524LanguageVersion = LanguageVersion.CSharp13, 3553LanguageVersion = LanguageVersion.CSharp13,

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

859LanguageVersion = LanguageVersion.CSharp6, 2585""", options: PreferDiscard, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 2619""", options: PreferDiscard, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp9)); 2624[CombinatorialValues(LanguageVersion.CSharp8, LanguageVersion.CSharp9)] LanguageVersion languageVersion) 2698LanguageVersion = LanguageVersion.CSharp9, 2857""", options: PreferDiscard, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 2863[CombinatorialValues(LanguageVersion.CSharp8, LanguageVersion.CSharp9)] LanguageVersion languageVersion) 2924LanguageVersion = LanguageVersion.CSharp9, 2967""", options: PreferDiscard, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 2973[CombinatorialValues(LanguageVersion.CSharp8, LanguageVersion.CSharp9)] LanguageVersion languageVersion) 3059LanguageVersion = LanguageVersion.CSharp9, 3102""", optionName: optionName, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 3139""", optionName: optionName, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp9)); 3222LanguageVersion = LanguageVersion.CSharp9, 5314""", optionName, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 7617""", PreferDiscard, new CSharpParseOptions(LanguageVersion.CSharp9)); 8077""", parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 8093""", parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 8117""", optionName: nameof(PreferDiscard), parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 8141""", optionName: nameof(PreferDiscard), parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 8161""", optionName: nameof(PreferDiscard), parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 8312""", options: PreferDiscard, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 8318[CombinatorialValues(LanguageVersion.CSharp8, LanguageVersion.CSharp9)] LanguageVersion languageVersion) 8397LanguageVersion = LanguageVersion.CSharp9, 8724""", options: PreferUnusedLocal, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp7_3)); 8762""", options: PreferUnusedLocal, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 8784parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9)); 8807parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9)); 8964""", new TestParameters(options: PreferDiscard, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8))); 8970[CombinatorialValues(LanguageVersion.CSharp8, LanguageVersion.CSharp9)] LanguageVersion languageVersion) 9002""", new TestParameters(options: PreferDiscard, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8))); 9028""", options: PreferDiscard, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 9058LanguageVersion = LanguageVersion.CSharp9, 9069[CombinatorialValues(LanguageVersion.CSharp8, LanguageVersion.CSharp9)] LanguageVersion languageVersion) 9097[CombinatorialValues(LanguageVersion.CSharp8, LanguageVersion.CSharp9)] LanguageVersion languageVersion) 9141""", options: PreferDiscard, parseOptions: new CSharpParseOptions(LanguageVersion.CSharp8)); 9175LanguageVersion = LanguageVersion.CSharp9, 9543LanguageVersion = LanguageVersion.CSharp9, 9576LanguageVersion = LanguageVersion.CSharp9, 9613LanguageVersion = LanguageVersion.CSharp9, 9650LanguageVersion = LanguageVersion.CSharp9, 9687LanguageVersion = LanguageVersion.CSharp9, 9724LanguageVersion = LanguageVersion.CSharp9, 9761LanguageVersion = LanguageVersion.CSharp11, 9799LanguageVersion = LanguageVersion.CSharp11, 9837LanguageVersion = LanguageVersion.CSharp11, 9858LanguageVersion = LanguageVersion.CSharp12, 9985LanguageVersion = 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));

24private readonly ParseOptions CSharp12 = CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp12); 448CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp5)); 468""", new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp5))); 514""", new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp5)));

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

181LanguageVersion = LanguageVersion.CSharp9, 245LanguageVersion = LanguageVersion.CSharp9, 426LanguageVersion = LanguageVersion.CSharp9,

34LanguageVersion = LanguageVersion.CSharp11, 55LanguageVersion = LanguageVersion.CSharp12, 76LanguageVersion = LanguageVersion.CSharp12, 97LanguageVersion = LanguageVersion.CSharp12, 122LanguageVersion = LanguageVersion.CSharp12, 147LanguageVersion = LanguageVersion.CSharp12, 168LanguageVersion = LanguageVersion.CSharp12, 189LanguageVersion = LanguageVersion.CSharp12, 204LanguageVersion = LanguageVersion.CSharp12, 229LanguageVersion = LanguageVersion.CSharp12, 250LanguageVersion = LanguageVersion.CSharp12, 277LanguageVersion = LanguageVersion.CSharp12, 298LanguageVersion = LanguageVersion.CSharp12, 319LanguageVersion = LanguageVersion.CSharp12, 340LanguageVersion = LanguageVersion.CSharp12, 355LanguageVersion = LanguageVersion.CSharp12, 370LanguageVersion = LanguageVersion.CSharp12, 385LanguageVersion = LanguageVersion.CSharp12, 406LanguageVersion = LanguageVersion.CSharp12, 421LanguageVersion = LanguageVersion.CSharp12, 446LanguageVersion = LanguageVersion.CSharp12, 473LanguageVersion = LanguageVersion.CSharp12, 488LanguageVersion = LanguageVersion.CSharp12, 509LanguageVersion = LanguageVersion.CSharp12, 528LanguageVersion = LanguageVersion.CSharp12, 547LanguageVersion = LanguageVersion.CSharp12, 566LanguageVersion = LanguageVersion.CSharp12, 585LanguageVersion = LanguageVersion.CSharp12, 605LanguageVersion = LanguageVersion.CSharp12, 627LanguageVersion = LanguageVersion.CSharp12, 648LanguageVersion = LanguageVersion.CSharp12, 675LanguageVersion = LanguageVersion.CSharp12, 693LanguageVersion = LanguageVersion.CSharp12, 711LanguageVersion = LanguageVersion.CSharp12, 729LanguageVersion = LanguageVersion.CSharp12, 749LanguageVersion = LanguageVersion.CSharp12, 776LanguageVersion = LanguageVersion.CSharp12, 803LanguageVersion = LanguageVersion.CSharp12, 830LanguageVersion = LanguageVersion.CSharp12, 848LanguageVersion = LanguageVersion.CSharp12, 875LanguageVersion = LanguageVersion.CSharp12, 902LanguageVersion = LanguageVersion.CSharp12, 929LanguageVersion = LanguageVersion.CSharp12, 947LanguageVersion = LanguageVersion.CSharp12, 965LanguageVersion = LanguageVersion.CSharp12, 992LanguageVersion = LanguageVersion.CSharp12, 1019LanguageVersion = LanguageVersion.CSharp12, 1037LanguageVersion = LanguageVersion.CSharp12, 1074LanguageVersion = LanguageVersion.CSharp12, 1106LanguageVersion = LanguageVersion.CSharp12, 1123LanguageVersion = LanguageVersion.CSharp12, 1145LanguageVersion = LanguageVersion.CSharp12, 1176LanguageVersion = LanguageVersion.CSharp12, 1196LanguageVersion = LanguageVersion.CSharp12, 1216LanguageVersion = LanguageVersion.CSharp12, 1236LanguageVersion = LanguageVersion.CSharp12, 1263LanguageVersion = LanguageVersion.CSharp12, 1290LanguageVersion = LanguageVersion.CSharp12, 1327LanguageVersion = LanguageVersion.CSharp12, 1354LanguageVersion = LanguageVersion.CSharp12, 1377LanguageVersion = LanguageVersion.CSharp12, 1398LanguageVersion = LanguageVersion.CSharp12, 1421LanguageVersion = LanguageVersion.CSharp12, 1446LanguageVersion = LanguageVersion.CSharp12, 1473LanguageVersion = LanguageVersion.CSharp12, 1496LanguageVersion = LanguageVersion.CSharp12, 1521LanguageVersion = LanguageVersion.CSharp12, 1548LanguageVersion = LanguageVersion.CSharp12, 1577LanguageVersion = LanguageVersion.CSharp12, 1598LanguageVersion = LanguageVersion.CSharp12, 1621LanguageVersion = LanguageVersion.CSharp12, 1646LanguageVersion = LanguageVersion.CSharp12, 1673LanguageVersion = LanguageVersion.CSharp12, 1701LanguageVersion = LanguageVersion.CSharp12, 1728LanguageVersion = LanguageVersion.CSharp12, 1756LanguageVersion = LanguageVersion.CSharp12, 1783LanguageVersion = LanguageVersion.CSharp12, 1808LanguageVersion = LanguageVersion.CSharp12, 1838LanguageVersion = LanguageVersion.CSharp12, 1859LanguageVersion = LanguageVersion.CSharp12, 1882LanguageVersion = LanguageVersion.CSharp12, 1907LanguageVersion = LanguageVersion.CSharp12, 1934LanguageVersion = LanguageVersion.CSharp12, 1962LanguageVersion = LanguageVersion.CSharp12, 1989LanguageVersion = LanguageVersion.CSharp12, 2017LanguageVersion = LanguageVersion.CSharp12, 2044LanguageVersion = LanguageVersion.CSharp12, 2069LanguageVersion = LanguageVersion.CSharp12, 2099LanguageVersion = LanguageVersion.CSharp12, 2150LanguageVersion = LanguageVersion.CSharp12, 2187LanguageVersion = LanguageVersion.CSharp12, 2228LanguageVersion = LanguageVersion.CSharp12, 2259LanguageVersion = LanguageVersion.CSharp12, 2279LanguageVersion = LanguageVersion.CSharp12, 2300LanguageVersion = LanguageVersion.CSharp12, 2323LanguageVersion = LanguageVersion.CSharp12, 2344LanguageVersion = LanguageVersion.CSharp12, 2365LanguageVersion = LanguageVersion.CSharp12, 2388LanguageVersion = LanguageVersion.CSharp12, 2411LanguageVersion = LanguageVersion.CSharp12, 2432LanguageVersion = LanguageVersion.CSharp12, 2453LanguageVersion = LanguageVersion.CSharp12, 2475LanguageVersion = LanguageVersion.CSharp12, 2507LanguageVersion = LanguageVersion.CSharp12, 2541LanguageVersion = LanguageVersion.CSharp12, 2574LanguageVersion = LanguageVersion.CSharp12, 2609LanguageVersion = LanguageVersion.CSharp12, 2631LanguageVersion = LanguageVersion.CSharp12, 2654LanguageVersion = LanguageVersion.CSharp12, 2679LanguageVersion = LanguageVersion.CSharp12, 2712LanguageVersion = LanguageVersion.CSharp12, 2745LanguageVersion = LanguageVersion.CSharp12, 2785LanguageVersion = LanguageVersion.CSharp12, 2830LanguageVersion = LanguageVersion.CSharp12, 2845LanguageVersion = LanguageVersion.CSharp12, 2874LanguageVersion = LanguageVersion.CSharp12, 2905LanguageVersion = LanguageVersion.CSharp12, 2950LanguageVersion = LanguageVersion.CSharp12, 2973LanguageVersion = LanguageVersion.CSharp12, 3003LanguageVersion = LanguageVersion.CSharp12, 3033LanguageVersion = LanguageVersion.CSharp12, 3063LanguageVersion = LanguageVersion.CSharp12, 3084LanguageVersion = LanguageVersion.CSharp12, 3114LanguageVersion = LanguageVersion.CSharp12, 3135LanguageVersion = LanguageVersion.CSharp12, 3171LanguageVersion = LanguageVersion.CSharp12, 3211LanguageVersion = LanguageVersion.CSharp12, 3247LanguageVersion = LanguageVersion.CSharp12, 3285LanguageVersion = LanguageVersion.CSharp12, 3329LanguageVersion = LanguageVersion.CSharp12, 3367LanguageVersion = LanguageVersion.CSharp12, 3409LanguageVersion = LanguageVersion.CSharp12, 3451LanguageVersion = LanguageVersion.CSharp12, 3489LanguageVersion = LanguageVersion.CSharp12, 3527LanguageVersion = LanguageVersion.CSharp12, 3569LanguageVersion = LanguageVersion.CSharp12, 3611LanguageVersion = LanguageVersion.CSharp12, 3649LanguageVersion = LanguageVersion.CSharp12, 3687LanguageVersion = LanguageVersion.CSharp12, 3725LanguageVersion = LanguageVersion.CSharp12, 3749LanguageVersion = LanguageVersion.CSharp12, 3772LanguageVersion = LanguageVersion.CSharp12, 3793LanguageVersion = LanguageVersion.CSharp12, 3818LanguageVersion = LanguageVersion.CSharp12, 3841LanguageVersion = LanguageVersion.CSharp12, 3866LanguageVersion = LanguageVersion.CSharp12, 3889LanguageVersion = LanguageVersion.CSharp12, 3913LanguageVersion = LanguageVersion.CSharp12, 3937LanguageVersion = LanguageVersion.CSharp12, 3962LanguageVersion = LanguageVersion.CSharp12, 3987LanguageVersion = LanguageVersion.CSharp12, 4014LanguageVersion = LanguageVersion.CSharp12, 4041LanguageVersion = LanguageVersion.CSharp12, 4068LanguageVersion = LanguageVersion.CSharp12, 4112LanguageVersion = LanguageVersion.CSharp12, 4154LanguageVersion = LanguageVersion.CSharp12, 4198LanguageVersion = LanguageVersion.CSharp12, 4235LanguageVersion = LanguageVersion.CSharp12, 4272LanguageVersion = LanguageVersion.CSharp12, 4294LanguageVersion = LanguageVersion.CSharp12, 4331LanguageVersion = LanguageVersion.CSharp12, 4354LanguageVersion = LanguageVersion.CSharp12, 4377LanguageVersion = LanguageVersion.CSharp12, 4408LanguageVersion = LanguageVersion.CSharp12, 4434LanguageVersion = LanguageVersion.CSharp12, 4456LanguageVersion = LanguageVersion.CSharp12, 4496LanguageVersion = LanguageVersion.CSharp12, 4534LanguageVersion = LanguageVersion.CSharp12, 4571LanguageVersion = LanguageVersion.CSharp12, 4594LanguageVersion = LanguageVersion.CSharp12, 4640LanguageVersion = LanguageVersion.CSharp12, 4674LanguageVersion = LanguageVersion.CSharp12, 4730LanguageVersion = LanguageVersion.CSharp12, 4802LanguageVersion = LanguageVersion.CSharp12, 4841LanguageVersion = LanguageVersion.CSharp12, 4865LanguageVersion = LanguageVersion.CSharp12, 4923LanguageVersion = LanguageVersion.CSharp12, 4947LanguageVersion = LanguageVersion.CSharp12, 4990LanguageVersion = LanguageVersion.CSharp12, 5014LanguageVersion = LanguageVersion.CSharp12, 5057LanguageVersion = LanguageVersion.CSharp12, 5081LanguageVersion = LanguageVersion.CSharp12, 5139LanguageVersion = LanguageVersion.CSharp12, 5193LanguageVersion = LanguageVersion.CSharp12, 5216LanguageVersion = LanguageVersion.CSharp12, 5239LanguageVersion = LanguageVersion.CSharp12, 5262LanguageVersion = LanguageVersion.CSharp12, 5285LanguageVersion = LanguageVersion.CSharp12, 5308LanguageVersion = LanguageVersion.CSharp12, 5331LanguageVersion = LanguageVersion.CSharp12, 5354LanguageVersion = LanguageVersion.CSharp12, 5381LanguageVersion = LanguageVersion.CSharp12, 5408LanguageVersion = LanguageVersion.CSharp12, 5432LanguageVersion = LanguageVersion.CSharp12, 5455LanguageVersion = LanguageVersion.CSharp12, 5496LanguageVersion = LanguageVersion.CSharp12, 5519LanguageVersion = LanguageVersion.CSharp12, 5542LanguageVersion = LanguageVersion.CSharp12, 5565LanguageVersion = LanguageVersion.CSharp12, 5587LanguageVersion = LanguageVersion.CSharp12, 5611LanguageVersion = LanguageVersion.CSharp12, 5634LanguageVersion = LanguageVersion.CSharp12, 5675LanguageVersion = LanguageVersion.CSharp12, 5698LanguageVersion = LanguageVersion.CSharp12, 5721LanguageVersion = LanguageVersion.CSharp12, 5758LanguageVersion = LanguageVersion.CSharp12, 5799LanguageVersion = LanguageVersion.CSharp12, 5841LanguageVersion = LanguageVersion.CSharp13, 5883LanguageVersion = 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,

50LanguageVersion = LanguageVersion.CSharp12, 81LanguageVersion = LanguageVersion.CSharp12, 112LanguageVersion = LanguageVersion.CSharp12, 141LanguageVersion = LanguageVersion.CSharp12, 160LanguageVersion = LanguageVersion.CSharp12, 197LanguageVersion = LanguageVersion.CSharp12, 218LanguageVersion = LanguageVersion.CSharp12, 253LanguageVersion = LanguageVersion.CSharp12, 286LanguageVersion = LanguageVersion.CSharp12, 319LanguageVersion = LanguageVersion.CSharp12, 352LanguageVersion = LanguageVersion.CSharp12, 385LanguageVersion = LanguageVersion.CSharp12, 416LanguageVersion = LanguageVersion.CSharp12, 437LanguageVersion = LanguageVersion.CSharp12, 470LanguageVersion = LanguageVersion.CSharp12, 495LanguageVersion = LanguageVersion.CSharp12, 552LanguageVersion = LanguageVersion.CSharp12, 620LanguageVersion = LanguageVersion.CSharp12, 688LanguageVersion = LanguageVersion.CSharp12, 720LanguageVersion = LanguageVersion.CSharp12, 741LanguageVersion = LanguageVersion.CSharp12, 775LanguageVersion = LanguageVersion.CSharp12, 797LanguageVersion = LanguageVersion.CSharp12, 831LanguageVersion = LanguageVersion.CSharp12, 864LanguageVersion = LanguageVersion.CSharp12, 899LanguageVersion = LanguageVersion.CSharp12, 950LanguageVersion = LanguageVersion.CSharp12, 988LanguageVersion = LanguageVersion.CSharp12, 1040LanguageVersion = LanguageVersion.CSharp12, 1093LanguageVersion = LanguageVersion.CSharp12, 1148LanguageVersion = LanguageVersion.CSharp12, 1186LanguageVersion = LanguageVersion.CSharp12, 1243LanguageVersion = LanguageVersion.CSharp12, 1267LanguageVersion = LanguageVersion.CSharp12, 1287LanguageVersion = LanguageVersion.CSharp12, 1314LanguageVersion = LanguageVersion.CSharp12, 1351LanguageVersion = LanguageVersion.CSharp12, 1381LanguageVersion = LanguageVersion.CSharp12, 1411LanguageVersion = LanguageVersion.CSharp12, 1441LanguageVersion = LanguageVersion.CSharp12, 1471LanguageVersion = LanguageVersion.CSharp12, 1507LanguageVersion = LanguageVersion.CSharp12, 1547LanguageVersion = LanguageVersion.CSharp12, 1585LanguageVersion = LanguageVersion.CSharp12, 1608LanguageVersion = LanguageVersion.CSharp12, 1631LanguageVersion = LanguageVersion.CSharp12, 1668LanguageVersion = LanguageVersion.CSharp12, 1693LanguageVersion = LanguageVersion.CSharp12, 1715LanguageVersion = 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, 116LanguageVersion = LanguageVersion.CSharp12, 136LanguageVersion = LanguageVersion.CSharp12,

37LanguageVersion = LanguageVersion.CSharp11, 58LanguageVersion = LanguageVersion.CSharp11, 79LanguageVersion = LanguageVersion.CSharp12, 100LanguageVersion = LanguageVersion.CSharp12, 132LanguageVersion = LanguageVersion.CSharp12, 164LanguageVersion = LanguageVersion.CSharp12, 196LanguageVersion = LanguageVersion.CSharp12, 228LanguageVersion = LanguageVersion.CSharp12, 249LanguageVersion = LanguageVersion.CSharp12, 270LanguageVersion = LanguageVersion.CSharp12, 291LanguageVersion = LanguageVersion.CSharp12, 312LanguageVersion = LanguageVersion.CSharp12, 346LanguageVersion = LanguageVersion.CSharp12, 367LanguageVersion = LanguageVersion.CSharp12, 388LanguageVersion = LanguageVersion.CSharp12, 409LanguageVersion = LanguageVersion.CSharp12, 430LanguageVersion = LanguageVersion.CSharp12, 466LanguageVersion = LanguageVersion.CSharp12, 502LanguageVersion = LanguageVersion.CSharp12, 534LanguageVersion = LanguageVersion.CSharp12, 566LanguageVersion = LanguageVersion.CSharp12, 588LanguageVersion = LanguageVersion.CSharp12, 620LanguageVersion = LanguageVersion.CSharp12, 641LanguageVersion = LanguageVersion.CSharp12, 673LanguageVersion = LanguageVersion.CSharp12, 694LanguageVersion = LanguageVersion.CSharp12, 716LanguageVersion = LanguageVersion.CSharp12, 740LanguageVersion = LanguageVersion.CSharp12, 762LanguageVersion = LanguageVersion.CSharp12, 784LanguageVersion = LanguageVersion.CSharp12, 808LanguageVersion = LanguageVersion.CSharp12, 832LanguageVersion = LanguageVersion.CSharp12, 854LanguageVersion = LanguageVersion.CSharp12, 876LanguageVersion = LanguageVersion.CSharp12, 899LanguageVersion = LanguageVersion.CSharp12, 932LanguageVersion = LanguageVersion.CSharp12, 967LanguageVersion = LanguageVersion.CSharp12, 1001LanguageVersion = LanguageVersion.CSharp12, 1037LanguageVersion = LanguageVersion.CSharp12, 1060LanguageVersion = LanguageVersion.CSharp12, 1084LanguageVersion = LanguageVersion.CSharp12, 1110LanguageVersion = LanguageVersion.CSharp12, 1150LanguageVersion = LanguageVersion.CSharp12, 1190LanguageVersion = LanguageVersion.CSharp12, 1228LanguageVersion = LanguageVersion.CSharp12, 1268LanguageVersion = LanguageVersion.CSharp12, 1304LanguageVersion = LanguageVersion.CSharp12, 1342LanguageVersion = LanguageVersion.CSharp12, 1380LanguageVersion = LanguageVersion.CSharp12, 1420LanguageVersion = LanguageVersion.CSharp12, 1456LanguageVersion = LanguageVersion.CSharp12, 1494LanguageVersion = LanguageVersion.CSharp12, 1532LanguageVersion = LanguageVersion.CSharp12, 1574LanguageVersion = LanguageVersion.CSharp12, 1594LanguageVersion = LanguageVersion.CSharp12, 1630LanguageVersion = LanguageVersion.CSharp12,

27LanguageVersion languageVersion = LanguageVersion.CSharp11) 41private static async Task TestMissingInRegularAndScriptAsync(string testCode, LanguageVersion? languageVersion = null) 344""", LanguageVersion.CSharp5); 604""", LanguageVersion.CSharp2); 1683""", OutputKind.ConsoleApplication, LanguageVersion.CSharp12); 1715""", languageVersion: LanguageVersion.CSharp12); 1749LanguageVersion = LanguageVersion.CSharp12, 1786LanguageVersion = LanguageVersion.CSharp12, 1827LanguageVersion = LanguageVersion.CSharp12, 1864LanguageVersion = LanguageVersion.CSharp13,

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, 5963LanguageVersion = LanguageVersion.CSharp12, 5984LanguageVersion = LanguageVersion.CSharp12, 6010LanguageVersion = LanguageVersion.CSharp12, 6073LanguageVersion = LanguageVersion.CSharp12,

266LanguageVersion = LanguageVersion.CSharp8 284LanguageVersion = LanguageVersion.CSharp7_3 303LanguageVersion = LanguageVersion.CSharp8 953LanguageVersion = LanguageVersion.CSharp9, 1599LanguageVersion = LanguageVersion.Preview,

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); 1041LanguageVersion = LanguageVersion.Preview,

28LanguageVersion languageVersion = LanguageVersion.CSharp8, 44LanguageVersion languageVersion = LanguageVersion.CSharp8, 199""", LanguageVersion.CSharp6); 591""", LanguageVersion.Latest); 989""", LanguageVersion.CSharp8, PreferImplicitTypeAlways); 1021""", LanguageVersion.CSharp9, options: PreferImplicitTypeAlways); 1181""", LanguageVersion.CSharp8, PreferImplicitTypeAlways); 1213""", LanguageVersion.CSharp9, options: PreferImplicitTypeAlways); 1905""", LanguageVersion.CSharp9); 1951""", LanguageVersion.CSharp9, equivalenceKey: nameof(AnalyzersResources.Simplify_check)); 2143LanguageVersion = LanguageVersion.CSharp9, 2188""", LanguageVersion.CSharp9); 2224""", LanguageVersion.CSharp13); 2302""", 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

35LanguageVersion = LanguageVersion.CSharp7 60LanguageVersion = LanguageVersion.CSharp7_1 87LanguageVersion = LanguageVersion.CSharp7_1 114LanguageVersion = LanguageVersion.CSharp7_1 132LanguageVersion = LanguageVersion.CSharp7_1 163LanguageVersion = LanguageVersion.CSharp7_1 183LanguageVersion = LanguageVersion.CSharp7_1 210LanguageVersion = LanguageVersion.CSharp7_1 228LanguageVersion = LanguageVersion.CSharp7_1 246LanguageVersion = LanguageVersion.CSharp7_1 277LanguageVersion = LanguageVersion.CSharp7_1 298LanguageVersion = LanguageVersion.CSharp7_1 325LanguageVersion = LanguageVersion.CSharp7_1, 354LanguageVersion = LanguageVersion.CSharp7_1, 385LanguageVersion = LanguageVersion.CSharp7_1 412LanguageVersion = LanguageVersion.CSharp7_1 441LanguageVersion = LanguageVersion.CSharp7_1 465LanguageVersion = LanguageVersion.CSharp7_1 489LanguageVersion = LanguageVersion.CSharp7_1 522LanguageVersion = LanguageVersion.CSharp7_1 543LanguageVersion = LanguageVersion.CSharp7_1 564LanguageVersion = LanguageVersion.CSharp7_1 597LanguageVersion = LanguageVersion.CSharp7_1 618LanguageVersion = LanguageVersion.CSharp7_1 639LanguageVersion = LanguageVersion.CSharp7_1 672LanguageVersion = LanguageVersion.CSharp7_1 705LanguageVersion = LanguageVersion.CSharp7_1 723LanguageVersion = LanguageVersion.CSharp7_1 741LanguageVersion = LanguageVersion.CSharp7_1 768LanguageVersion = 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,

295LanguageVersion = 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); 305LanguageVersion = LanguageVersion.CSharp9, 502await TestWithUseBlockBodyIncludingPropertiesAndIndexers(code, fixedCode, LanguageVersion.CSharp9); 875LanguageVersion = LanguageVersion.CSharp9, 908await TestWithUseExpressionBody(code, fixedCode, LanguageVersion.CSharp6); 942await 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);

30LanguageVersion version = LanguageVersion.CSharp8) 527await TestWithUseExpressionBody(code, fixedCode, LanguageVersion.CSharp6); 562await TestWithUseExpressionBody(code, fixedCode, LanguageVersion.CSharp6);

22private static readonly LanguageVersion CSharp14 = LanguageVersionExtensions.CSharpNext; 330LanguageVersion = LanguageVersion.CSharp13,

29LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp8, 56LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 77LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 98LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 119LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 134LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 161LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 176LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 191LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 212LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 239LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 261LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 296LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 323LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 344LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 365LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 386LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 407LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 428LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 443LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 464LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 485LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 500LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 516LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 535LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 558LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 581LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 606LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 641LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 664LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 687LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 716LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 725LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 754LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 779LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 804LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 829LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 846LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 863LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 888LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 913LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 930LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 947LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9, 972LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp9,

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

38LanguageVersion = LanguageVersion.CSharp7, 469LanguageVersion = LanguageVersion.CSharp8, 506LanguageVersion = LanguageVersion.CSharp8,

38LanguageVersion = LanguageVersion.CSharp7, 94LanguageVersion = LanguageVersion.CSharp8, 131LanguageVersion = LanguageVersion.CSharp8, 359LanguageVersion = 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)));

29LanguageVersion languageVersion = LanguageVersion.CSharp9) 49LanguageVersion languageVersion = LanguageVersion.CSharp9) 306""", LanguageVersion.CSharp5); 324""", LanguageVersion.CSharp5);

25LanguageVersion? languageVersion = null) 74LanguageVersion = LanguageVersion.CSharp12, 178LanguageVersion = LanguageVersion.CSharp12, 240LanguageVersion = LanguageVersion.CSharp12, 301LanguageVersion = LanguageVersion.CSharp12, 343LanguageVersion = LanguageVersion.CSharp12, 387LanguageVersion = LanguageVersion.CSharp12, 431LanguageVersion = LanguageVersion.CSharp12, 474LanguageVersion = LanguageVersion.CSharp12, 520LanguageVersion = LanguageVersion.CSharp12, 568LanguageVersion = LanguageVersion.CSharp12, 588""", LanguageVersion.CSharp2); 646LanguageVersion = LanguageVersion.CSharp12, 699LanguageVersion = LanguageVersion.CSharp12, 753LanguageVersion = LanguageVersion.CSharp12, 795LanguageVersion = LanguageVersion.CSharp12, 844LanguageVersion = LanguageVersion.CSharp12, 942LanguageVersion = LanguageVersion.CSharp12, 992LanguageVersion = LanguageVersion.CSharp12, 1101LanguageVersion = LanguageVersion.CSharp12, 1163LanguageVersion = LanguageVersion.CSharp12, 1197LanguageVersion = LanguageVersion.CSharp12, 1279LanguageVersion = LanguageVersion.CSharp12, 1352LanguageVersion = LanguageVersion.CSharp12, 1395LanguageVersion = LanguageVersion.CSharp12, 1442LanguageVersion = LanguageVersion.CSharp12, 1485LanguageVersion = LanguageVersion.CSharp12, 1532LanguageVersion = LanguageVersion.CSharp12,

68LanguageVersion = LanguageVersion.CSharp7, 88LanguageVersion = LanguageVersion.CSharp7, 106LanguageVersion = LanguageVersion.CSharp7, 129LanguageVersion = LanguageVersion.CSharp7, 149LanguageVersion = LanguageVersion.CSharp8, 169LanguageVersion = LanguageVersion.CSharp9, 189LanguageVersion = LanguageVersion.CSharp8, 209LanguageVersion = LanguageVersion.CSharp9, 232LanguageVersion = LanguageVersion.CSharp9, 254LanguageVersion = LanguageVersion.CSharp8, 289LanguageVersion = LanguageVersion.CSharp9, 326LanguageVersion = LanguageVersion.CSharp10, 348LanguageVersion = LanguageVersion.CSharp8, 370LanguageVersion = LanguageVersion.CSharp8, 407LanguageVersion = LanguageVersion.CSharp10, 438LanguageVersion = LanguageVersion.CSharp9, 469LanguageVersion = LanguageVersion.CSharp9, 504LanguageVersion = LanguageVersion.CSharp9, 535LanguageVersion = LanguageVersion.CSharp9, 585LanguageVersion = LanguageVersion.CSharp9, 605LanguageVersion = LanguageVersion.CSharp9, 625LanguageVersion = LanguageVersion.CSharp9, 648LanguageVersion = LanguageVersion.CSharp9, 683LanguageVersion = LanguageVersion.CSharp9, 720LanguageVersion = LanguageVersion.CSharp10, 755LanguageVersion = LanguageVersion.CSharp9, 792LanguageVersion = LanguageVersion.CSharp10, 815LanguageVersion = LanguageVersion.CSharp9, 852LanguageVersion = LanguageVersion.CSharp10, 965LanguageVersion = LanguageVersion.CSharp9, 1018LanguageVersion = LanguageVersion.CSharp9, 1115LanguageVersion = LanguageVersion.CSharp9, 1136LanguageVersion = LanguageVersion.CSharp9, 1209LanguageVersion = 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, 4099LanguageVersion = LanguageVersion.CSharp12, 4125LanguageVersion = LanguageVersion.CSharp12, 4158LanguageVersion = LanguageVersion.CSharp12, 4187LanguageVersion = LanguageVersion.CSharp12, 4219LanguageVersion = LanguageVersion.CSharp12, 4248LanguageVersion = LanguageVersion.CSharp12, 4279LanguageVersion = LanguageVersion.CSharp12, 4307LanguageVersion = LanguageVersion.CSharp12, 4340LanguageVersion = LanguageVersion.CSharp12, 4370LanguageVersion = LanguageVersion.CSharp12, 4404LanguageVersion = LanguageVersion.CSharp12, 4435LanguageVersion = LanguageVersion.CSharp12, 4467LanguageVersion = LanguageVersion.CSharp12, 4502LanguageVersion = 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,

148""", new TestParameters(CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp6))); 615""", TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9)); 651""", TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9)); 688""", TestOptions.Regular.WithLanguageVersion(LanguageVersion.CSharp9));

40LanguageVersion = LanguageVersion.CSharp6, 422LanguageVersion = LanguageVersion.CSharp9,

90LanguageVersion = LanguageVersion.CSharp13,

45LanguageVersion = LanguageVersion.CSharp12 64LanguageVersion = LanguageVersion.CSharp10 84LanguageVersion = LanguageVersion.CSharp12 104LanguageVersion = LanguageVersion.CSharp12 131LanguageVersion = LanguageVersion.CSharp12 151LanguageVersion = LanguageVersion.CSharp12 175LanguageVersion = LanguageVersion.CSharp12 197LanguageVersion = LanguageVersion.CSharp12 217LanguageVersion = LanguageVersion.CSharp12 248LanguageVersion = LanguageVersion.CSharp12 281LanguageVersion = LanguageVersion.CSharp12 312LanguageVersion = LanguageVersion.CSharp12 343LanguageVersion = LanguageVersion.CSharp12 374LanguageVersion = LanguageVersion.CSharp12 405LanguageVersion = LanguageVersion.CSharp12 435LanguageVersion = LanguageVersion.CSharp12 466LanguageVersion = LanguageVersion.CSharp12 497LanguageVersion = LanguageVersion.CSharp12 532LanguageVersion = LanguageVersion.CSharp12 563LanguageVersion = LanguageVersion.CSharp12 594LanguageVersion = LanguageVersion.CSharp12 615LanguageVersion = LanguageVersion.CSharp12 636LanguageVersion = LanguageVersion.CSharp12 657LanguageVersion = LanguageVersion.CSharp12 691LanguageVersion = LanguageVersion.CSharp12 772LanguageVersion = LanguageVersion.CSharp12 800LanguageVersion = LanguageVersion.CSharp12 833LanguageVersion = LanguageVersion.CSharp12 887LanguageVersion = LanguageVersion.CSharp12 918LanguageVersion = LanguageVersion.CSharp12 949LanguageVersion = LanguageVersion.CSharp12 980LanguageVersion = LanguageVersion.CSharp12 1011LanguageVersion = LanguageVersion.CSharp12 1042LanguageVersion = LanguageVersion.CSharp12 1073LanguageVersion = LanguageVersion.CSharp12 1093LanguageVersion = LanguageVersion.CSharp12 1124LanguageVersion = LanguageVersion.CSharp12 1155LanguageVersion = LanguageVersion.CSharp12 1186LanguageVersion = LanguageVersion.CSharp12 1217LanguageVersion = LanguageVersion.CSharp12 1248LanguageVersion = LanguageVersion.CSharp12 1289LanguageVersion = LanguageVersion.CSharp12 1344LanguageVersion = LanguageVersion.CSharp12 1433LanguageVersion = LanguageVersion.CSharp12 1464LanguageVersion = LanguageVersion.CSharp12 1495LanguageVersion = LanguageVersion.CSharp12 1526LanguageVersion = LanguageVersion.CSharp12 1561LanguageVersion = LanguageVersion.CSharp12 1596LanguageVersion = LanguageVersion.CSharp12

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

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));

3255[new CSharpParseOptions(LanguageVersion.CSharp8)],

106LanguageVersion = LanguageVersion.CSharp6, 138LanguageVersion = LanguageVersion.CSharp7, 171LanguageVersion = LanguageVersion.CSharp6, 210LanguageVersion = LanguageVersion.CSharp6, 296LanguageVersion = LanguageVersion.CSharp6, 329LanguageVersion = LanguageVersion.CSharp6, 362LanguageVersion = LanguageVersion.CSharp6, 400LanguageVersion = LanguageVersion.CSharp6, 437LanguageVersion = LanguageVersion.CSharp6, 492LanguageVersion = LanguageVersion.CSharp6, 555LanguageVersion = LanguageVersion.CSharp6, 813LanguageVersion = LanguageVersion.CSharp6, 880LanguageVersion = LanguageVersion.CSharp6, 919LanguageVersion = LanguageVersion.CSharp6, 969LanguageVersion = LanguageVersion.CSharp6, 1017LanguageVersion = LanguageVersion.CSharp6, 1057LanguageVersion = LanguageVersion.CSharp6, 1095LanguageVersion = LanguageVersion.CSharp6, 1134LanguageVersion = LanguageVersion.CSharp6, 1181LanguageVersion = LanguageVersion.CSharp6, 1367LanguageVersion = LanguageVersion.CSharp6, 1400LanguageVersion = LanguageVersion.CSharp6, 1433LanguageVersion = LanguageVersion.CSharp6, 1472LanguageVersion = LanguageVersion.CSharp6, 1511LanguageVersion = LanguageVersion.CSharp6, 1558LanguageVersion = LanguageVersion.CSharp6, 1607LanguageVersion = LanguageVersion.CSharp6, 1654LanguageVersion = LanguageVersion.CSharp6, 1693LanguageVersion = LanguageVersion.CSharp6, 1732LanguageVersion = LanguageVersion.CSharp6, 1779LanguageVersion = LanguageVersion.CSharp6, 1818LanguageVersion = LanguageVersion.CSharp6, 1856LanguageVersion = LanguageVersion.CSharp6, 1896LanguageVersion = LanguageVersion.CSharp6, 1934LanguageVersion = LanguageVersion.CSharp6, 1964LanguageVersion = LanguageVersion.CSharp6, 2117LanguageVersion = LanguageVersion.CSharp6, 2156LanguageVersion = LanguageVersion.CSharp6, 2199LanguageVersion = LanguageVersion.CSharp6, 2249LanguageVersion = LanguageVersion.CSharp6, 2301LanguageVersion = LanguageVersion.CSharp6, 2369LanguageVersion = LanguageVersion.CSharp6, 2409LanguageVersion = LanguageVersion.CSharp6, 2507LanguageVersion = LanguageVersion.CSharp8, 2551LanguageVersion = LanguageVersion.CSharp8, 2591LanguageVersion = LanguageVersion.CSharp6, 2632LanguageVersion = LanguageVersion.CSharp7, 2673LanguageVersion = LanguageVersion.CSharp8, 2714LanguageVersion = LanguageVersion.CSharp9, 2756LanguageVersion = LanguageVersion.CSharp8, 2801LanguageVersion = LanguageVersion.CSharp8, 2836LanguageVersion = LanguageVersion.CSharp6, 2846LanguageVersion = LanguageVersion.CSharp6, 2994LanguageVersion = LanguageVersion.CSharp6, 3054LanguageVersion = LanguageVersion.CSharp6, 3120LanguageVersion = LanguageVersion.CSharp6, 3199LanguageVersion = LanguageVersion.CSharp6, 3267LanguageVersion = LanguageVersion.CSharp6, 3340LanguageVersion = LanguageVersion.CSharp6, 3413LanguageVersion = LanguageVersion.CSharp6, 3486LanguageVersion = LanguageVersion.CSharp6, 3691LanguageVersion = LanguageVersion.Default, 3743LanguageVersion = LanguageVersion.Default, 4046LanguageVersion = LanguageVersion.Default, 4061LanguageVersion = LanguageVersion.CSharp12,

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

37LanguageVersion = LanguageVersion.CSharp11, 71LanguageVersion = LanguageVersion.CSharp11, 141LanguageVersion = LanguageVersion.CSharp6, 294[InlineData(LanguageVersion.CSharp11)] 295[InlineData(LanguageVersion.CSharp8)] 296public async Task TestNotOnPartialMethodDefinition1(LanguageVersion languageVersion) 321LanguageVersion = LanguageVersion.CSharp9, 338[InlineData(LanguageVersion.CSharp11)] 339[InlineData(LanguageVersion.CSharp8)] 340public async Task TestNotOnPartialMethodDefinition2(LanguageVersion languageVersion) 365LanguageVersion = LanguageVersion.CSharp9, 420LanguageVersion = LanguageVersion.CSharp9, 491LanguageVersion = LanguageVersion.CSharp9, 982LanguageVersion = LanguageVersion.CSharp6, 1753LanguageVersion = LanguageVersion.CSharp11, 1792LanguageVersion = LanguageVersion.CSharp11, 1915LanguageVersion = LanguageVersion.CSharp11, 3057[InlineData(LanguageVersion.CSharp10)] 3058[InlineData(LanguageVersion.CSharp11)] 3059public async Task TestNotInRecord(LanguageVersion version) 3075LanguageVersion = LanguageVersion.CSharp12, 3087LanguageVersion = LanguageVersion.CSharp12, 3796LanguageVersion = LanguageVersion.Latest,

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

684LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp10 3378LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp10, 3396LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp10, 3417LanguageVersion = CodeAnalysis.CSharp.LanguageVersion.CSharp10,

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

37[StringSyntax(PredefinedEmbeddedLanguageNames.CSharpTest)] string code, LanguageVersion languageVersion = LanguageVersion.Default) 44[StringSyntax(PredefinedEmbeddedLanguageNames.CSharpTest)] string code, LanguageVersion languageVersion = LanguageVersion.Default, string? inlineDescription = null, bool dotAwait = false, bool dotAwaitf = false) 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)

4038var options = CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.Latest);

13292await VerifyItemExistsAsync(MakeMarkup(source, languageVersion: LanguageVersion.CSharp10), "parameter"); 13371await VerifyItemExistsAsync(MakeMarkup(source, languageVersion: LanguageVersion.CSharp10), "parameter"); 13388await VerifyItemExistsAsync(MakeMarkup(source, languageVersion: LanguageVersion.CSharp10), "parameter"); 13405await VerifyItemExistsAsync(MakeMarkup(source, languageVersion: LanguageVersion.CSharp10), "parameter"); 13422await VerifyItemExistsAsync(MakeMarkup(source, languageVersion: LanguageVersion.CSharp10), "parameter"); 13434await VerifyItemExistsAsync(MakeMarkup(source, languageVersion: LanguageVersion.CSharp10), "parameter"); 13445await VerifyItemExistsAsync(MakeMarkup(source, languageVersion: LanguageVersion.CSharp10), "parameter"); 15125LanguageVersion languageVersion = LanguageVersion.Preview)

502parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp10), 542parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9), 583parseOptions: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp10), 894parseOptions: 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),

1517Options.Regular.WithLanguageVersion(LanguageVersion.Preview), 1536Options.Regular.WithLanguageVersion(LanguageVersion.Preview), 1555Options.Regular.WithLanguageVersion(LanguageVersion.Preview), 1574Options.Regular.WithLanguageVersion(LanguageVersion.Preview), 1593Options.Regular.WithLanguageVersion(LanguageVersion.Preview), 1612Options.Regular.WithLanguageVersion(LanguageVersion.Preview), 3361Options.Regular.WithLanguageVersion(LanguageVersion.CSharp8), 3401Options.Regular.WithLanguageVersion(LanguageVersion.CSharp8), 9174Options.Regular.WithLanguageVersion(LanguageVersion.CSharp9), 9189Options.Regular.WithLanguageVersion(LanguageVersion.CSharp9), 9310Options.Regular.WithLanguageVersion(LanguageVersion.CSharp9), 9325Options.Regular.WithLanguageVersion(LanguageVersion.CSharp9), 9340Options.Regular.WithLanguageVersion(LanguageVersion.CSharp9), 9355Options.Regular.WithLanguageVersion(LanguageVersion.CSharp9), 9374Options.Regular.WithLanguageVersion(LanguageVersion.Preview), 9746Options.Regular.WithLanguageVersion(LanguageVersion.CSharp9), 9760Options.Regular.WithLanguageVersion(LanguageVersion.CSharp9), 9775Options.Regular.WithLanguageVersion(LanguageVersion.CSharp9), 10333await TestWithOptionsAsync(Options.Regular.WithLanguageVersion(LanguageVersion.CSharp11), source, 10348await TestWithOptionsAsync(Options.Regular.WithLanguageVersion(LanguageVersion.CSharp11), source, 10367await TestWithOptionsAsync(Options.Regular.WithLanguageVersion(LanguageVersion.CSharp11), source, 11122CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.Preview), 11150CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.Preview), 11179CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.Preview), 11208CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.Preview), 11236CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.Preview), 11259CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.Preview),

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

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

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

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

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

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));

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

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

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

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

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

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

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

658[CombinatorialValues(LanguageVersion.CSharp13, LanguageVersionFacts.CSharpNext)] LanguageVersion languageVersion) 687if (languageVersion == LanguageVersion.CSharp13) 828[CombinatorialValues(LanguageVersion.CSharp13, LanguageVersionFacts.CSharpNext)] LanguageVersion languageVersion) 847if (languageVersion == LanguageVersion.CSharp13) 929Assert.Equal(languageVersion > LanguageVersion.CSharp13, ((SourcePropertySymbol)actualProperties[0]).UsesFieldKeyword); 930Assert.Equal(languageVersion > LanguageVersion.CSharp13, ((SourcePropertySymbol)actualProperties[1]).UsesFieldKeyword); 938[CombinatorialValues(LanguageVersion.CSharp13, LanguageVersionFacts.CSharpNext)] LanguageVersion languageVersion, bool useInit) 956if (languageVersion == LanguageVersion.CSharp13) 1030Assert.Equal(languageVersion > LanguageVersion.CSharp13, ((SourcePropertySymbol)actualProperties[0]).UsesFieldKeyword); 1031Assert.Equal(languageVersion > LanguageVersion.CSharp13, ((SourcePropertySymbol)actualProperties[1]).UsesFieldKeyword); 1040[CombinatorialValues(LanguageVersion.CSharp13, LanguageVersionFacts.CSharpNext)] LanguageVersion languageVersion) 1070if (languageVersion == LanguageVersion.CSharp13) 1137[CombinatorialValues(LanguageVersion.CSharp13, LanguageVersionFacts.CSharpNext)] LanguageVersion languageVersion) 1167if (languageVersion == LanguageVersion.CSharp13) 1456[CombinatorialValues(LanguageVersion.CSharp13, LanguageVersionFacts.CSharpNext)] LanguageVersion languageVersion, 8319[CombinatorialValues(LanguageVersion.CSharp13, LanguageVersionFacts.CSharpNext)] LanguageVersion languageVersion, 8352if (languageVersion == LanguageVersion.CSharp13) 8471[CombinatorialValues(LanguageVersion.CSharp12, LanguageVersion.CSharp13)] LanguageVersion languageVersion, 8498case (LanguageVersion.CSharp12, false): 8519case (LanguageVersion.CSharp12, true): 8534case (LanguageVersion.CSharp13, false): 8543case (LanguageVersion.CSharp13, true): 8561[CombinatorialValues(LanguageVersion.CSharp13, LanguageVersionFacts.CSharpNext)] LanguageVersion languageVersion, 8583if (languageVersion == LanguageVersion.CSharp13) 8636[CombinatorialValues(LanguageVersion.CSharp13, LanguageVersionFacts.CSharpNext)] LanguageVersion languageVersion, 8658if (languageVersion == LanguageVersion.CSharp13) 10163[CombinatorialValues(LanguageVersion.CSharp13, LanguageVersionFacts.CSharpNext)] LanguageVersion languageVersion) 10189if (languageVersion == LanguageVersion.CSharp13) 10267[CombinatorialValues(LanguageVersion.CSharp13, LanguageVersionFacts.CSharpNext)] LanguageVersion languageVersion) 10292if (languageVersion == LanguageVersion.CSharp13) 10334if (languageVersion == LanguageVersion.CSharp13) 10349if (languageVersion == LanguageVersion.CSharp13) 10364[CombinatorialValues(LanguageVersion.CSharp13, LanguageVersionFacts.CSharpNext)] LanguageVersion languageVersion)