public static Diagnostic Create(
string id,
string category,
LocalizableString message,
DiagnosticSeverity severity,
DiagnosticSeverity defaultSeverity,
bool isEnabledByDefault,
int warningLevel,
bool isSuppressed,
LocalizableString?title = null,
LocalizableString?description = null,
string?helpLink = null,
Location?location = null,
IEnumerable <Location>?additionalLocations = null,
IEnumerable <string>?customTags = null,
ImmutableDictionary <string, string>?properties = null)
{
if (id == null)
{
throw new ArgumentNullException(nameof(id));
}
if (category == null)
{
throw new ArgumentNullException(nameof(category));
}
if (message == null)
{
throw new ArgumentNullException(nameof(message));
}
return(SimpleDiagnostic.Create(id, title ?? string.Empty, category, message, description ?? string.Empty, helpLink ?? string.Empty,
severity, defaultSeverity, isEnabledByDefault, warningLevel, location ?? Location.None, additionalLocations, customTags, properties, isSuppressed));
}
/// <summary>
/// Creates a <see cref="Diagnostic"/> instance which is localizable.
/// </summary>
/// <param name="id">An identifier for the diagnostic. For diagnostics generated by the compiler, this will be a numeric code with a prefix such as "CS1001".</param>
/// <param name="category">The category of the diagnostic. For diagnostics generated by the compiler, the category will be "Compiler".</param>
/// <param name="message">The diagnostic message text.</param>
/// <param name="severity">The diagnostic's effective severity.</param>
/// <param name="defaultSeverity">The diagnostic's default severity.</param>
/// <param name="isEnabledByDefault">True if the diagnostic is enabled by default</param>
/// <param name="warningLevel">The warning level, between 1 and 4 if severity is <see cref="DiagnosticSeverity.Warning"/>; otherwise 0.</param>
/// <param name="title">An optional short localizable title describing the diagnostic.</param>
/// <param name="description">An optional longer localizable description for the diagnostic.</param>
/// <param name="helpLink">An optional hyperlink that provides more detailed information regarding the diagnostic.</param>
/// <param name="location">An optional primary location of the diagnostic. If null, <see cref="Location"/> will return <see cref="Location.None"/>.</param>
/// <param name="additionalLocations">
/// An optional set of additional locations related to the diagnostic.
/// Typically, these are locations of other items referenced in the message.
/// If null, <see cref="AdditionalLocations"/> will return an empty list.
/// </param>
/// <param name="customTags">
/// An optional set of custom tags for the diagnostic. See <see cref="WellKnownDiagnosticTags"/> for some well known tags.
/// If null, <see cref="CustomTags"/> will return an empty list.
/// </param>
/// <param name="properties">
/// An optional set of name-value pairs by means of which the analyzer that creates the diagnostic
/// can convey more detailed information to the fixer. If null, <see cref="Properties"/> will return
/// <see cref="ImmutableDictionary{TKey, TValue}.Empty"/>.
/// </param>
/// <returns>The <see cref="Diagnostic"/> instance.</returns>
public static Diagnostic Create(
string id,
string category,
LocalizableString message,
DiagnosticSeverity severity,
DiagnosticSeverity defaultSeverity,
bool isEnabledByDefault,
int warningLevel,
LocalizableString?title = null,
LocalizableString?description = null,
string?helpLink = null,
Location?location = null,
IEnumerable <Location>?additionalLocations = null,
IEnumerable <string>?customTags = null,
ImmutableDictionary <string, string?>?properties = null
)
{
return(Create(
id,
category,
message,
severity,
defaultSeverity,
isEnabledByDefault,
warningLevel,
false,
title,
description,
helpLink,
location,
additionalLocations,
customTags,
properties
));
}
internal DiagnosticDescriptor(
string id,
LocalizableString title,
LocalizableString messageFormat,
string category,
DiagnosticSeverity defaultSeverity,
bool isEnabledByDefault,
LocalizableString?description,
string?helpLinkUri,
ImmutableArray <string> customTags)
{
if (string.IsNullOrWhiteSpace(id))
{
throw new ArgumentException("DiagnosticId cannot be null or whitespace", nameof(id));
}
Id = id;
Title = title ?? throw new ArgumentNullException(nameof(title));
Category = category ?? throw new ArgumentNullException(nameof(category));
MessageFormat = messageFormat ?? throw new ArgumentNullException(nameof(messageFormat));
DefaultSeverity = defaultSeverity;
IsEnabledByDefault = isEnabledByDefault;
Description = description ?? string.Empty;
HelpLinkUri = helpLinkUri ?? string.Empty;
CustomTags = customTags;
}
public static DiagnosticDescriptor Create(
string id,
LocalizableString title,
LocalizableString messageFormat,
string category,
RuleLevel ruleLevel,
LocalizableString?description,
bool isPortedFxCopRule,
bool isDataflowRule,
bool isEnabledByDefaultInFxCopAnalyzers = true,
params string[] additionalCustomTags)
{
// PERF: Ensure that all DFA rules are disabled by default in NetAnalyzers package.
Debug.Assert(!isDataflowRule || ruleLevel == RuleLevel.Disabled || ruleLevel == RuleLevel.CandidateForRemoval);
var(defaultSeverity, enabledByDefault) = GetDefaultSeverityAndEnabledByDefault(ruleLevel, isEnabledByDefaultInFxCopAnalyzers);
#pragma warning disable CA1308 // Normalize strings to uppercase - use lower case ID in help link
var helpLink = $"https://docs.microsoft.com/visualstudio/code-quality/{id.ToLowerInvariant()}";
#pragma warning restore CA1308 // Normalize strings to uppercase
var customTags = isPortedFxCopRule ?
(isDataflowRule ? FxCopWellKnownDiagnosticTags.PortedFxCopDataflowRule : FxCopWellKnownDiagnosticTags.PortedFxCopRule) :
(isDataflowRule ? WellKnownDiagnosticTagsExtensions.DataflowAndTelemetry : WellKnownDiagnosticTagsExtensions.Telemetry);
if (additionalCustomTags.Length > 0)
{
customTags = customTags.Concat(additionalCustomTags).ToArray();
}
#pragma warning disable RS0030 // The symbol 'DiagnosticDescriptor.DiagnosticDescriptor.#ctor' is banned in this project: Use 'DiagnosticDescriptorHelper.Create' instead
return(new DiagnosticDescriptor(id, title, messageFormat, category, defaultSeverity, enabledByDefault, description, helpLink, customTags));
public static DiagnosticDescriptor Create(
string id,
LocalizableString title,
LocalizableString messageFormat,
string category,
RuleLevel ruleLevel,
LocalizableString?description,
bool isPortedFxCopRule,
bool isDataflowRule,
bool isEnabledByDefaultInFxCopAnalyzers = true,
bool isEnabledByDefaultInAggressiveMode = true,
params string[] additionalCustomTags)
{
// PERF: Ensure that all DFA rules are disabled by default in NetAnalyzers package.
Debug.Assert(!isDataflowRule || ruleLevel == RuleLevel.Disabled || ruleLevel == RuleLevel.CandidateForRemoval);
// Ensure 'isEnabledByDefaultInAggressiveMode' is not false for enabled rules in default mode
Debug.Assert(isEnabledByDefaultInAggressiveMode || ruleLevel == RuleLevel.Disabled || ruleLevel == RuleLevel.CandidateForRemoval);
var(defaultSeverity, enabledByDefault) = GetDefaultSeverityAndEnabledByDefault(ruleLevel, isEnabledByDefaultInFxCopAnalyzers);
#pragma warning disable CA1308 // Normalize strings to uppercase - use lower case ID in help link
var helpLink = $"https://docs.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/{id.ToLowerInvariant()}";
#pragma warning restore CA1308 // Normalize strings to uppercase
var customTags = GetDefaultCustomTags(isPortedFxCopRule, isDataflowRule, isEnabledByDefaultInAggressiveMode);
if (additionalCustomTags.Length > 0)
{
customTags = customTags.Concat(additionalCustomTags).ToArray();
}
#pragma warning disable RS0030 // The symbol 'DiagnosticDescriptor.DiagnosticDescriptor.#ctor' is banned in this project: Use 'DiagnosticDescriptorHelper.Create' instead
return(new DiagnosticDescriptor(id, title, messageFormat, category, defaultSeverity, enabledByDefault, description, helpLink, customTags));
private static void CheckArgument(
ISymbol targetSymbol,
IObjectCreationOperation creation,
IParameterSymbol parameter,
string stringArgument,
OperationAnalysisContext context)
{
bool matchesParameter = MatchesParameter(targetSymbol, creation, stringArgument);
LocalizableString?format = null;
if (IsMessage(parameter) && matchesParameter)
{
format = s_localizableMessageIncorrectMessage;
}
else if (IsParameterName(parameter) && !matchesParameter)
{
// Allow argument exceptions in accessors to use the associated property symbol name.
if (MatchesAssociatedSymbol(targetSymbol, stringArgument))
{
return;
}
format = s_localizableMessageIncorrectParameterName;
}
if (format != null)
{
ReportDiagnostic(context, format, targetSymbol.Name, stringArgument, parameter.Name, creation.Type.Name);
}
}
protected static DiagnosticDescriptor CreateDescriptorWithId(
string id,
LocalizableString title,
LocalizableString messageFormat,
bool isUnnecessary = false,
bool isConfigurable = true,
LocalizableString?description = null,
params string[] customTags)
=> new(
protected static DiagnosticDescriptor CreateDescriptorWithId(
string id,
EnforceOnBuild enforceOnBuild,
LocalizableString title,
LocalizableString messageFormat,
bool isUnnecessary = false,
bool isConfigurable = true,
LocalizableString?description = null)
=> new(
protected static DiagnosticDescriptor CreateDescriptorWithId(
string id,
EnforceOnBuild enforceOnBuild,
LocalizableString title,
LocalizableString?messageFormat = null,
bool isUnnecessary = false,
bool isConfigurable = true,
LocalizableString?description = null)
#pragma warning disable RS0030 // Do not used banned APIs
=> new(
protected AbstractBuiltInCodeStyleDiagnosticAnalyzer(
string diagnosticId,
IPerLanguageOption?option,
LocalizableString title,
LocalizableString?messageFormat = null,
bool configurable = true)
: base(diagnosticId, title, messageFormat, configurable)
{
AddDiagnosticIdToOptionMapping(diagnosticId, option);
}
protected static DiagnosticDescriptor CreateDescriptor(
string id,
EnforceOnBuild enforceOnBuild,
LocalizableString title,
LocalizableString messageFormat,
bool isUnnecessary,
bool isEnabledByDefault = true,
bool isConfigurable = true,
LocalizableString?description = null)
#pragma warning disable RS0030 // Do not use banned APIs
=> new(
/// <summary>
/// Constructor for a code style analyzer with a single diagnostic descriptor and
/// unique <see cref="IPerLanguageOption"/> code style option.
/// </summary>
/// <param name="diagnosticId">Diagnostic ID reported by this analyzer</param>
/// <param name="enforceOnBuild">Build enforcement recommendation for this analyzer</param>
/// <param name="option">
/// Per-language option that can be used to configure the given <paramref name="diagnosticId"/>.
/// <see langword="null"/>, if there is no such unique option.
/// </param>
/// <param name="title">Title for the diagnostic descriptor</param>
/// <param name="messageFormat">
/// Message for the diagnostic descriptor.
/// <see langword="null"/> if the message is identical to the title.
/// </param>
/// <param name="isUnnecessary"><see langword="true"/> if the diagnostic is reported on unnecessary code; otherwise, <see langword="false"/>.</param>
/// <param name="configurable">Flag indicating if the reported diagnostics are configurable by the end users</param>
protected AbstractBuiltInCodeStyleDiagnosticAnalyzer(
string diagnosticId,
EnforceOnBuild enforceOnBuild,
IPerLanguageOption?option,
LocalizableString title,
LocalizableString?messageFormat = null,
bool isUnnecessary = false,
bool configurable = true)
: this(diagnosticId, enforceOnBuild, title, messageFormat, isUnnecessary, configurable)
{
AddDiagnosticIdToOptionMapping(diagnosticId, option);
}
/// <summary>
/// Constructor for an unnecessary code style analyzer with a single diagnostic descriptor and
/// unique <see cref="IPerLanguageValuedOption"/> code style option.
/// </summary>
/// <param name="diagnosticId">Diagnostic ID reported by this analyzer</param>
/// <param name="enforceOnBuild">Build enforcement recommendation for this analyzer</param>
/// <param name="option">
/// Per-language option that can be used to configure the given <paramref name="diagnosticId"/>.
/// <see langword="null"/>, if there is no such unique option.
/// </param>
/// <param name="fadingOption">
/// Per-language fading option that can be used to configure if the diagnostic should be faded in the IDE or not.
/// <see langword="null"/>, if there is no such unique fading option.
/// </param>
/// <param name="title">Title for the diagnostic descriptor</param>
/// <param name="messageFormat">
/// Message for the diagnostic descriptor.
/// <see langword="null"/> if the message is identical to the title.
/// </param>
/// <param name="configurable">Flag indicating if the reported diagnostics are configurable by the end users</param>
protected AbstractBuiltInUnnecessaryCodeStyleDiagnosticAnalyzer(
string diagnosticId,
EnforceOnBuild enforceOnBuild,
IPerLanguageValuedOption?option,
PerLanguageOption2 <bool>?fadingOption,
LocalizableString title,
LocalizableString?messageFormat = null,
bool configurable = true)
: base(diagnosticId, enforceOnBuild, option, title, messageFormat, isUnnecessary: true, configurable)
{
AddDiagnosticIdToFadingOptionMapping(diagnosticId, fadingOption);
}
protected AbstractBuiltInCodeStyleDiagnosticAnalyzer(
string diagnosticId,
ImmutableHashSet <IPerLanguageOption> options,
LocalizableString title,
LocalizableString?messageFormat = null,
bool configurable = true)
: base(diagnosticId, title, messageFormat, configurable)
{
RoslynDebug.Assert(options != null);
Debug.Assert(options.Count > 1);
AddDiagnosticIdToOptionMapping(diagnosticId, options);
}
/// <summary>
/// Constructor for a code style analyzer with a single diagnostic descriptor and
/// unique <see cref="ILanguageSpecificOption"/> code style option for the given language.
/// </summary>
/// <param name="diagnosticId">Diagnostic ID reported by this analyzer</param>
/// <param name="option">
/// Language specific option that can be used to configure the given <paramref name="diagnosticId"/>.
/// <see langword="null"/>, if there is no such unique option.
/// </param>
/// <param name="language">Language for the given language-specific <paramref name="option"/>.</param>
/// <param name="title">Title for the diagnostic descriptor</param>
/// <param name="messageFormat">
/// Message for the diagnostic descriptor.
/// <see langword="null"/> if the message is identical to the title.
/// </param>
/// <param name="isUnnecessary"><see langword="true"/> if the diagnostic is reported on unnecessary code; otherwise, <see langword="false"/>.</param>
/// <param name="configurable">Flag indicating if the reported diagnostics are configurable by the end users</param>
protected AbstractBuiltInCodeStyleDiagnosticAnalyzer(
string diagnosticId,
ILanguageSpecificOption?option,
string language,
LocalizableString title,
LocalizableString?messageFormat = null,
bool isUnnecessary = false,
bool configurable = true)
: base(diagnosticId, title, messageFormat, isUnnecessary, configurable)
{
AddDiagnosticIdToOptionMapping(diagnosticId, option, language);
}
protected AbstractCodeStyleDiagnosticAnalyzer(
string descriptorId, LocalizableString title,
LocalizableString?messageFormat = null,
bool isUnnecessary = false,
bool configurable = true)
{
DescriptorId = descriptorId;
_localizableTitle = title;
_localizableMessageFormat = messageFormat ?? title;
Descriptor = CreateDescriptorWithId(DescriptorId, _localizableTitle, _localizableMessageFormat, isUnnecessary: isUnnecessary, isConfigurable: configurable);
SupportedDiagnostics = ImmutableArray.Create(Descriptor);
}
/// <summary>
/// Create a DiagnosticDescriptor, which provides description about a <see cref="Diagnostic"/>.
/// </summary>
/// <param name="id">A unique identifier for the diagnostic. For example, code analysis diagnostic ID "CA1001".</param>
/// <param name="title">A short localizable title describing the diagnostic. For example, for CA1001: "Types that own disposable fields should be disposable".</param>
/// <param name="messageFormat">A localizable format message string, which can be passed as the first argument to <see cref="string.Format(string, object[])"/> when creating the diagnostic message with this descriptor.
/// For example, for CA1001: "Implement IDisposable on '{0}' because it creates members of the following IDisposable types: '{1}'."</param>
/// <param name="category">The category of the diagnostic (like Design, Naming etc.). For example, for CA1001: "Microsoft.Design".</param>
/// <param name="defaultSeverity">Default severity of the diagnostic.</param>
/// <param name="isEnabledByDefault">True if the diagnostic is enabled by default.</param>
/// <param name="description">An optional longer localizable description of the diagnostic.</param>
/// <param name="helpLinkUri">An optional hyperlink that provides a more detailed description regarding the diagnostic.</param>
/// <param name="customTags">Optional custom tags for the diagnostic. See <see cref="WellKnownDiagnosticTags"/> for some well known tags.</param>
/// <remarks>Example descriptor for rule CA1001:
/// internal static DiagnosticDescriptor Rule = new DiagnosticDescriptor(RuleId,
/// new LocalizableResourceString(nameof(FxCopRulesResources.TypesThatOwnDisposableFieldsShouldBeDisposable), FxCopRulesResources.ResourceManager, typeof(FxCopRulesResources)),
/// new LocalizableResourceString(nameof(FxCopRulesResources.TypeOwnsDisposableFieldButIsNotDisposable), FxCopRulesResources.ResourceManager, typeof(FxCopRulesResources)),
/// FxCopDiagnosticCategory.Design,
/// DiagnosticSeverity.Warning,
/// isEnabledByDefault: true,
/// helpLinkUri: "http://msdn.microsoft.com/library/ms182172.aspx",
/// customTags: DiagnosticCustomTags.Microsoft);
/// </remarks>
public DiagnosticDescriptor(
string id,
LocalizableString title,
LocalizableString messageFormat,
string category,
DiagnosticSeverity defaultSeverity,
bool isEnabledByDefault,
LocalizableString?description = null,
string?helpLinkUri = null,
params string[] customTags)
: this(id, title, messageFormat, category, defaultSeverity, isEnabledByDefault, description, helpLinkUri, customTags.AsImmutableOrEmpty())
{
}
/// <summary>
/// Constructor for a code style analyzer with a single diagnostic descriptor and
/// two or more <see cref="IPerLanguageValuedOption "/> code style options.
/// </summary>
/// <param name="diagnosticId">Diagnostic ID reported by this analyzer</param>
/// <param name="enforceOnBuild">Build enforcement recommendation for this analyzer</param>
/// <param name="options">
/// Set of two or more per-language options that can be used to configure the diagnostic severity of the given diagnosticId.
/// </param>
/// <param name="title">Title for the diagnostic descriptor</param>
/// <param name="messageFormat">
/// Message for the diagnostic descriptor.
/// Null if the message is identical to the title.
/// </param>
/// <param name="isUnnecessary"><see langword="true"/> if the diagnostic is reported on unnecessary code; otherwise, <see langword="false"/>.</param>
/// <param name="configurable">Flag indicating if the reported diagnostics are configurable by the end users</param>
protected AbstractBuiltInCodeStyleDiagnosticAnalyzer(
string diagnosticId,
EnforceOnBuild enforceOnBuild,
ImmutableHashSet <IPerLanguageValuedOption> options,
LocalizableString title,
LocalizableString?messageFormat = null,
bool isUnnecessary = false,
bool configurable = true)
: this(diagnosticId, enforceOnBuild, title, messageFormat, isUnnecessary, configurable)
{
RoslynDebug.Assert(options != null);
Debug.Assert(options.Count > 1);
AddDiagnosticIdToOptionMapping(diagnosticId, options);
}
private AbstractBuiltInCodeStyleDiagnosticAnalyzer(
string descriptorId,
EnforceOnBuild enforceOnBuild,
LocalizableString title,
LocalizableString?messageFormat,
bool isUnnecessary,
bool configurable)
{
// 'isUnnecessary' should be true only for sub-types of AbstractBuiltInUnnecessaryCodeStyleDiagnosticAnalyzer.
Debug.Assert(!isUnnecessary || this is AbstractBuiltInUnnecessaryCodeStyleDiagnosticAnalyzer);
Descriptor = CreateDescriptorWithId(descriptorId, enforceOnBuild, title, messageFormat ?? title, isUnnecessary: isUnnecessary, isConfigurable: configurable);
SupportedDiagnostics = ImmutableArray.Create(Descriptor);
}
protected static DiagnosticDescriptor CreateDescriptorWithId(
string id,
LocalizableString title,
LocalizableString messageFormat,
bool isUnnecessary = false,
bool isConfigurable = true,
LocalizableString?description = null,
params string[] customTags)
=> new DiagnosticDescriptor(
id, title, messageFormat,
DiagnosticCategory.Style,
DiagnosticSeverity.Hidden,
isEnabledByDefault: true,
description: description,
customTags: DiagnosticCustomTags.Create(isUnnecessary, isConfigurable, customTags));
private AbstractBuiltInCodeStyleDiagnosticAnalyzer(
string descriptorId,
EnforceOnBuild enforceOnBuild,
LocalizableString title,
LocalizableString?messageFormat,
bool isUnnecessary,
bool configurable)
{
DescriptorId = descriptorId;
_localizableTitle = title;
_localizableMessageFormat = messageFormat ?? title;
Descriptor = CreateDescriptorWithId(DescriptorId, enforceOnBuild, _localizableTitle, _localizableMessageFormat, isUnnecessary: isUnnecessary, isConfigurable: configurable);
SupportedDiagnostics = ImmutableArray.Create(Descriptor);
}
protected AbstractCodeStyleDiagnosticAnalyzer(
string descriptorId, LocalizableString title,
LocalizableString?messageFormat = null,
bool configurable = true)
{
DescriptorId = descriptorId;
_localizableTitle = title;
_localizableMessageFormat = messageFormat ?? title;
Descriptor = CreateDescriptorWithId(DescriptorId, _localizableTitle, _localizableMessageFormat, isConfigurable: configurable);
UnnecessaryWithSuggestionDescriptor = CreateUnnecessaryDescriptor(DescriptorId, configurable);
UnnecessaryWithoutSuggestionDescriptor = CreateUnnecessaryDescriptor(descriptorId + "WithoutSuggestion", configurable);
SupportedDiagnostics = ImmutableArray.Create(
Descriptor, UnnecessaryWithoutSuggestionDescriptor, UnnecessaryWithSuggestionDescriptor);
}
private DiagnosticResult(
ImmutableArray <DiagnosticLocation> spans,
bool suppressMessage,
string?message,
DiagnosticSeverity severity,
string id,
LocalizableString?messageFormat,
object?[]?messageArguments)
{
_spans = spans;
_suppressMessage = suppressMessage;
_message = message;
Severity = severity;
Id = id;
MessageFormat = messageFormat;
MessageArguments = messageArguments;
}
internal DiagnosticDescriptor(
string id,
LocalizableString title,
LocalizableString messageFormat,
string category,
DiagnosticSeverity defaultSeverity,
bool isEnabledByDefault,
LocalizableString?description,
string?helpLinkUri,
ImmutableArray <string> customTags
)
{
if (string.IsNullOrWhiteSpace(id))
{
throw new ArgumentException(
CodeAnalysisResources.DiagnosticIdCantBeNullOrWhitespace,
nameof(id)
);
}
if (messageFormat == null)
{
throw new ArgumentNullException(nameof(messageFormat));
}
if (category == null)
{
throw new ArgumentNullException(nameof(category));
}
if (title == null)
{
throw new ArgumentNullException(nameof(title));
}
this.Id = id;
this.Title = title;
this.Category = category;
this.MessageFormat = messageFormat;
this.DefaultSeverity = defaultSeverity;
this.IsEnabledByDefault = isEnabledByDefault;
this.Description = description ?? string.Empty;
this.HelpLinkUri = helpLinkUri ?? string.Empty;
this.CustomTags = customTags;
}
private AbstractBuiltInCodeStyleDiagnosticAnalyzer(
string descriptorId,
EnforceOnBuild enforceOnBuild,
LocalizableString title,
LocalizableString?messageFormat,
bool isUnnecessary,
bool configurable)
{
// 'isUnnecessary' should be true only for sub-types of AbstractBuiltInUnnecessaryCodeStyleDiagnosticAnalyzer.
// NOTE: AbstractParenthesesDiagnosticAnalyzer is an exception as it is a common sub-type for
// AbstractRemoveUnnecessaryParenthesesDiagnosticAnalyzer (unnecessary code analyzer) and
// AbstractAddRequiredParenthesesDiagnosticAnalyzer (non-unnecessary code analyzer).
Debug.Assert(!isUnnecessary ||
this is AbstractBuiltInUnnecessaryCodeStyleDiagnosticAnalyzer ||
this is AbstractParenthesesDiagnosticAnalyzer);
Descriptor = CreateDescriptorWithId(descriptorId, enforceOnBuild, title, messageFormat ?? title, isUnnecessary: isUnnecessary, isConfigurable: configurable);
SupportedDiagnostics = ImmutableArray.Create(Descriptor);
}
