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CSharpCommandLineParser.cs
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CSharpCommandLineParser.cs
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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System;
using System.Collections.Generic;
using System.Collections.Immutable;
using System.Diagnostics;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using Microsoft.CodeAnalysis.Emit;
using Microsoft.CodeAnalysis.PooledObjects;
using Microsoft.CodeAnalysis.Text;
using Roslyn.Utilities;
namespace Microsoft.CodeAnalysis.CSharp
{
public class CSharpCommandLineParser : CommandLineParser
{
public static CSharpCommandLineParser Default { get; } = new CSharpCommandLineParser();
public static CSharpCommandLineParser Script { get; } = new CSharpCommandLineParser(isScriptCommandLineParser: true);
private static readonly char[] s_quoteOrEquals = new[] { '"', '=' };
private static readonly char[] s_warningSeparators = new char[] { ',', ';', ' ' };
internal CSharpCommandLineParser(bool isScriptCommandLineParser = false)
: base(CSharp.MessageProvider.Instance, isScriptCommandLineParser)
{
}
protected override string RegularFileExtension { get { return ".cs"; } }
protected override string ScriptFileExtension { get { return ".csx"; } }
internal sealed override CommandLineArguments CommonParse(IEnumerable<string> args, string baseDirectory, string? sdkDirectory, string? additionalReferenceDirectories)
{
return Parse(args, baseDirectory, sdkDirectory, additionalReferenceDirectories);
}
/// <summary>
/// Parses a command line.
/// </summary>
/// <param name="args">A collection of strings representing the command line arguments.</param>
/// <param name="baseDirectory">The base directory used for qualifying file locations.</param>
/// <param name="sdkDirectory">The directory to search for mscorlib, or null if not available.</param>
/// <param name="additionalReferenceDirectories">A string representing additional reference paths.</param>
/// <returns>a commandlinearguments object representing the parsed command line.</returns>
public new CSharpCommandLineArguments Parse(IEnumerable<string> args, string? baseDirectory, string? sdkDirectory, string? additionalReferenceDirectories = null)
{
Debug.Assert(baseDirectory == null || PathUtilities.IsAbsolute(baseDirectory));
List<Diagnostic> diagnostics = new List<Diagnostic>();
var flattenedArgs = ArrayBuilder<string>.GetInstance();
List<string>? scriptArgs = IsScriptCommandLineParser ? new List<string>() : null;
List<string>? responsePaths = IsScriptCommandLineParser ? new List<string>() : null;
FlattenArgs(args, diagnostics, flattenedArgs, scriptArgs, baseDirectory, responsePaths);
string? appConfigPath = null;
bool displayLogo = true;
bool displayHelp = false;
bool displayVersion = false;
bool displayLangVersions = false;
bool optimize = false;
bool checkOverflow = false;
NullableContextOptions nullableContextOptions = NullableContextOptions.Disable;
bool allowUnsafe = false;
bool concurrentBuild = true;
bool deterministic = false; // TODO(5431): Enable deterministic mode by default
bool emitPdb = false;
DebugInformationFormat debugInformationFormat = PathUtilities.IsUnixLikePlatform ? DebugInformationFormat.PortablePdb : DebugInformationFormat.Pdb;
bool debugPlus = false;
string? pdbPath = null;
bool noStdLib = IsScriptCommandLineParser; // don't add mscorlib from sdk dir when running scripts
string? outputDirectory = baseDirectory;
ImmutableArray<KeyValuePair<string, string>> pathMap = ImmutableArray<KeyValuePair<string, string>>.Empty;
string? outputFileName = null;
string? outputRefFilePath = null;
bool refOnly = false;
string? generatedFilesOutputDirectory = null;
string? documentationPath = null;
ErrorLogOptions? errorLogOptions = null;
bool parseDocumentationComments = false; //Don't just null check documentationFileName because we want to do this even if the file name is invalid.
bool utf8output = false;
OutputKind outputKind = OutputKind.ConsoleApplication;
SubsystemVersion subsystemVersion = SubsystemVersion.None;
LanguageVersion languageVersion = LanguageVersion.Default;
string? mainTypeName = null;
string? win32ManifestFile = null;
string? win32ResourceFile = null;
string? win32IconFile = null;
bool noWin32Manifest = false;
Platform platform = Platform.AnyCpu;
ulong baseAddress = 0;
int fileAlignment = 0;
bool? delaySignSetting = null;
string? keyFileSetting = null;
string? keyContainerSetting = null;
List<ResourceDescription> managedResources = new List<ResourceDescription>();
List<CommandLineSourceFile> sourceFiles = new List<CommandLineSourceFile>();
List<CommandLineSourceFile> additionalFiles = new List<CommandLineSourceFile>();
var analyzerConfigPaths = ArrayBuilder<string>.GetInstance();
List<CommandLineSourceFile> embeddedFiles = new List<CommandLineSourceFile>();
bool sourceFilesSpecified = false;
bool embedAllSourceFiles = false;
bool resourcesOrModulesSpecified = false;
Encoding? codepage = null;
var checksumAlgorithm = SourceHashAlgorithmUtils.DefaultContentHashAlgorithm;
var defines = ArrayBuilder<string>.GetInstance();
List<CommandLineReference> metadataReferences = new List<CommandLineReference>();
List<CommandLineAnalyzerReference> analyzers = new List<CommandLineAnalyzerReference>();
List<string> libPaths = new List<string>();
List<string> sourcePaths = new List<string>();
List<string> keyFileSearchPaths = new List<string>();
List<string> usings = new List<string>();
var generalDiagnosticOption = ReportDiagnostic.Default;
var diagnosticOptions = new Dictionary<string, ReportDiagnostic>();
var noWarns = new Dictionary<string, ReportDiagnostic>();
var warnAsErrors = new Dictionary<string, ReportDiagnostic>();
int warningLevel = Diagnostic.DefaultWarningLevel;
bool highEntropyVA = false;
bool printFullPaths = false;
string? moduleAssemblyName = null;
string? moduleName = null;
List<string> features = new List<string>();
string? runtimeMetadataVersion = null;
bool errorEndLocation = false;
bool reportAnalyzer = false;
bool skipAnalyzers = false;
ArrayBuilder<InstrumentationKind> instrumentationKinds = ArrayBuilder<InstrumentationKind>.GetInstance();
CultureInfo? preferredUILang = null;
string? touchedFilesPath = null;
bool optionsEnded = false;
bool interactiveMode = false;
bool publicSign = false;
string? sourceLink = null;
string? ruleSetPath = null;
// Process ruleset files first so that diagnostic severity settings specified on the command line via
// /nowarn and /warnaserror can override diagnostic severity settings specified in the ruleset file.
if (!IsScriptCommandLineParser)
{
foreach (string arg in flattenedArgs)
{
if (IsOption("ruleset", arg, out ReadOnlyMemory<char> name, out ReadOnlyMemory<char>? value))
{
var unquoted = RemoveQuotesAndSlashes(value);
if (RoslynString.IsNullOrEmpty(unquoted))
{
AddDiagnostic(diagnostics, ErrorCode.ERR_SwitchNeedsString, "<text>", name.ToString());
}
else
{
ruleSetPath = ParseGenericPathToFile(unquoted, diagnostics, baseDirectory);
generalDiagnosticOption = GetDiagnosticOptionsFromRulesetFile(ruleSetPath, out diagnosticOptions, diagnostics);
}
}
}
}
foreach (string arg in flattenedArgs)
{
Debug.Assert(optionsEnded || !arg.StartsWith("@", StringComparison.Ordinal));
ArrayBuilder<string> filePathBuilder;
ReadOnlyMemory<char> nameMemory;
ReadOnlyMemory<char>? valueMemory;
if (optionsEnded || !TryParseOption(arg, out nameMemory, out valueMemory))
{
filePathBuilder = ArrayBuilder<string>.GetInstance();
ParseFileArgument(arg.AsMemory(), baseDirectory, filePathBuilder, diagnostics);
foreach (var path in filePathBuilder)
{
sourceFiles.Add(ToCommandLineSourceFile(path));
}
filePathBuilder.Free();
if (sourceFiles.Count > 0)
{
sourceFilesSpecified = true;
}
continue;
}
string? value;
string? valueMemoryString() => valueMemory is { } m ? m.Span.ToString() : null;
// The main 'switch' for argument handling forces an allocation of the option name field. For the most
// common options we special case the handling below to avoid this allocation as it can contribute significantly
// to parsing allocations.
//
// When we allow for switching on Span<char> this can be undone as the name 'switch' will be allocation free
// https://github.com/dotnet/roslyn/pull/44388
if (IsOptionName("r", "reference", nameMemory))
{
ParseAssemblyReferences(arg, valueMemory, diagnostics, embedInteropTypes: false, metadataReferences);
continue;
}
else if (IsOptionName("langversion", nameMemory))
{
value = RemoveQuotesAndSlashes(valueMemory);
if (RoslynString.IsNullOrEmpty(value))
{
AddDiagnostic(diagnostics, ErrorCode.ERR_SwitchNeedsString, MessageID.IDS_Text.Localize(), "/langversion:");
}
else if (value.StartsWith("0", StringComparison.Ordinal))
{
// This error was added in 7.1 to stop parsing versions as ints (behaviour in previous Roslyn compilers), and explicitly
// treat them as identifiers (behaviour in native compiler). This error helps users identify that breaking change.
AddDiagnostic(diagnostics, ErrorCode.ERR_LanguageVersionCannotHaveLeadingZeroes, value);
}
else if (value == "?")
{
displayLangVersions = true;
}
else if (!LanguageVersionFacts.TryParse(value, out languageVersion))
{
AddDiagnostic(diagnostics, ErrorCode.ERR_BadCompatMode, value);
}
continue;
}
else if (!IsScriptCommandLineParser && IsOptionName("a", "analyzer", nameMemory))
{
ParseAnalyzers(arg, valueMemory, analyzers, diagnostics);
continue;
}
else if (!IsScriptCommandLineParser && IsOptionName("nowarn", nameMemory))
{
if (valueMemory is null)
{
AddDiagnostic(diagnostics, ErrorCode.ERR_SwitchNeedsNumber, nameMemory.ToString());
continue;
}
if (valueMemory.Value.Length == 0)
{
AddDiagnostic(diagnostics, ErrorCode.ERR_SwitchNeedsNumber, nameMemory.ToString());
}
else
{
AddWarnings(noWarns, ReportDiagnostic.Suppress, valueMemory.Value);
}
continue;
}
string name = nameMemory.Span.ToString().ToLowerInvariant();
switch (name)
{
case "?":
case "help":
displayHelp = true;
continue;
case "version":
displayVersion = true;
continue;
case "features":
value = valueMemoryString();
if (value == null)
{
features.Clear();
}
else
{
features.Add(value);
}
continue;
case "lib":
case "libpath":
case "libpaths":
ParseAndResolveReferencePaths(name, valueMemory, baseDirectory, libPaths, MessageID.IDS_LIB_OPTION, diagnostics);
continue;
#if DEBUG
case "attachdebugger":
Debugger.Launch();
continue;
#endif
}
if (IsScriptCommandLineParser)
{
value = valueMemoryString();
switch (name)
{
case "-": // csi -- script.csx
if (value != null) break;
if (arg == "-")
{
if (Console.IsInputRedirected)
{
sourceFiles.Add(new CommandLineSourceFile("-", isScript: true, isInputRedirected: true));
sourceFilesSpecified = true;
}
else
{
AddDiagnostic(diagnostics, ErrorCode.ERR_StdInOptionProvidedButConsoleInputIsNotRedirected);
}
continue;
}
// Indicates that the remaining arguments should not be treated as options.
optionsEnded = true;
continue;
case "i":
case "i+":
if (value != null) break;
interactiveMode = true;
continue;
case "i-":
if (value != null) break;
interactiveMode = false;
continue;
case "loadpath":
case "loadpaths":
ParseAndResolveReferencePaths(name, valueMemory, baseDirectory, sourcePaths, MessageID.IDS_REFERENCEPATH_OPTION, diagnostics);
continue;
case "u":
case "using":
case "usings":
case "import":
case "imports":
usings.AddRange(ParseUsings(arg, value, diagnostics));
continue;
}
}
else
{
switch (name)
{
case "d":
case "define":
if (valueMemory is not { Length: > 0 })
{
AddDiagnostic(diagnostics, ErrorCode.ERR_SwitchNeedsString, "<text>", arg);
continue;
}
IEnumerable<Diagnostic> defineDiagnostics;
ParseConditionalCompilationSymbols(RemoveQuotesAndSlashesEx(valueMemory.Value), defines, out defineDiagnostics);
diagnostics.AddRange(defineDiagnostics);
continue;
case "codepage":
value = RemoveQuotesAndSlashes(valueMemory);
if (value == null)
{
AddDiagnostic(diagnostics, ErrorCode.ERR_SwitchNeedsString, "<text>", name);
continue;
}
var encoding = TryParseEncodingName(value);
if (encoding == null)
{
AddDiagnostic(diagnostics, ErrorCode.FTL_BadCodepage, value);
continue;
}
codepage = encoding;
continue;
case "checksumalgorithm":
value = valueMemoryString();
if (string.IsNullOrEmpty(value))
{
AddDiagnostic(diagnostics, ErrorCode.ERR_SwitchNeedsString, "<text>", name);
continue;
}
var newChecksumAlgorithm = TryParseHashAlgorithmName(value!);
if (newChecksumAlgorithm == SourceHashAlgorithm.None)
{
AddDiagnostic(diagnostics, ErrorCode.FTL_BadChecksumAlgorithm, value);
continue;
}
checksumAlgorithm = newChecksumAlgorithm;
continue;
case "checked":
case "checked+":
if (valueMemory is not null)
{
break;
}
checkOverflow = true;
continue;
case "checked-":
if (valueMemory is not null)
break;
checkOverflow = false;
continue;
case "nullable":
value = RemoveQuotesAndSlashes(valueMemory);
if (value != null)
{
if (value.IsEmpty())
{
AddDiagnostic(diagnostics, ErrorCode.ERR_SwitchNeedsString, MessageID.IDS_Text.Localize(), name);
continue;
}
string loweredValue = value.ToLower();
switch (loweredValue)
{
case "disable":
Debug.Assert(loweredValue == nameof(NullableContextOptions.Disable).ToLower());
nullableContextOptions = NullableContextOptions.Disable;
break;
case "enable":
Debug.Assert(loweredValue == nameof(NullableContextOptions.Enable).ToLower());
nullableContextOptions = NullableContextOptions.Enable;
break;
case "warnings":
Debug.Assert(loweredValue == nameof(NullableContextOptions.Warnings).ToLower());
nullableContextOptions = NullableContextOptions.Warnings;
break;
case "annotations":
Debug.Assert(loweredValue == nameof(NullableContextOptions.Annotations).ToLower());
nullableContextOptions = NullableContextOptions.Annotations;
break;
default:
AddDiagnostic(diagnostics, ErrorCode.ERR_BadNullableContextOption, value);
break;
}
}
else
{
nullableContextOptions = NullableContextOptions.Enable;
}
continue;
case "nullable+":
if (valueMemory is not null)
{
break;
}
nullableContextOptions = NullableContextOptions.Enable;
continue;
case "nullable-":
if (valueMemory is not null)
break;
nullableContextOptions = NullableContextOptions.Disable;
continue;
case "instrument":
value = RemoveQuotesAndSlashes(valueMemory);
if (RoslynString.IsNullOrEmpty(value))
{
AddDiagnostic(diagnostics, ErrorCode.ERR_SwitchNeedsString, "<text>", name);
}
else
{
foreach (InstrumentationKind instrumentationKind in ParseInstrumentationKinds(value, diagnostics))
{
if (!instrumentationKinds.Contains(instrumentationKind))
{
instrumentationKinds.Add(instrumentationKind);
}
}
}
continue;
case "noconfig":
// It is already handled (see CommonCommandLineCompiler.cs).
continue;
case "sqmsessionguid":
// The use of SQM is deprecated in the compiler but we still support the parsing of the option for
// back compat reason
value = valueMemoryString();
if (value == null)
{
AddDiagnostic(diagnostics, ErrorCode.ERR_MissingGuidForOption, "<text>", name);
}
else
{
Guid sqmSessionGuid;
if (!Guid.TryParse(value, out sqmSessionGuid))
{
AddDiagnostic(diagnostics, ErrorCode.ERR_InvalidFormatForGuidForOption, value, name);
}
}
continue;
case "preferreduilang":
value = RemoveQuotesAndSlashes(valueMemory);
if (RoslynString.IsNullOrEmpty(value))
{
AddDiagnostic(diagnostics, ErrorCode.ERR_SwitchNeedsString, "<text>", arg);
continue;
}
try
{
preferredUILang = new CultureInfo(value);
if ((preferredUILang.CultureTypes & CultureTypes.UserCustomCulture) != 0)
{
// Do not use user custom cultures.
preferredUILang = null;
}
}
catch (CultureNotFoundException)
{
}
if (preferredUILang == null)
{
AddDiagnostic(diagnostics, ErrorCode.WRN_BadUILang, value);
}
continue;
case "nosdkpath":
sdkDirectory = null;
continue;
case "out":
value = valueMemoryString();
if (RoslynString.IsNullOrWhiteSpace(value))
{
AddDiagnostic(diagnostics, ErrorCode.ERR_NoFileSpec, arg);
}
else
{
ParseOutputFile(value, diagnostics, baseDirectory, out outputFileName, out outputDirectory);
}
continue;
case "refout":
value = RemoveQuotesAndSlashes(valueMemory);
if (RoslynString.IsNullOrEmpty(value))
{
AddDiagnostic(diagnostics, ErrorCode.ERR_NoFileSpec, arg);
}
else
{
outputRefFilePath = ParseGenericPathToFile(value, diagnostics, baseDirectory);
}
continue;
case "refonly":
if (valueMemory is not null)
break;
refOnly = true;
continue;
case "t":
case "target":
value = valueMemoryString();
if (value == null)
{
break; // force 'unrecognized option'
}
if (RoslynString.IsNullOrEmpty(value))
{
AddDiagnostic(diagnostics, ErrorCode.FTL_InvalidTarget);
}
else
{
outputKind = ParseTarget(value, diagnostics);
}
continue;
case "moduleassemblyname":
value = valueMemoryString();
value = value != null ? value.Unquote() : null;
if (RoslynString.IsNullOrEmpty(value))
{
AddDiagnostic(diagnostics, ErrorCode.ERR_SwitchNeedsString, "<text>", arg);
}
else if (!MetadataHelpers.IsValidAssemblyOrModuleName(value))
{
// Dev11 C# doesn't check the name (VB does)
AddDiagnostic(diagnostics, ErrorCode.ERR_InvalidAssemblyName, "<text>", arg);
}
else
{
moduleAssemblyName = value;
}
continue;
case "modulename":
var unquotedModuleName = RemoveQuotesAndSlashes(valueMemory);
if (string.IsNullOrEmpty(unquotedModuleName))
{
AddDiagnostic(diagnostics, ErrorCode.ERR_SwitchNeedsString, MessageID.IDS_Text.Localize(), "modulename");
continue;
}
else
{
moduleName = unquotedModuleName;
}
continue;
case "platform":
value = RemoveQuotesAndSlashes(valueMemory);
if (RoslynString.IsNullOrEmpty(value))
{
AddDiagnostic(diagnostics, ErrorCode.ERR_SwitchNeedsString, "<string>", arg);
}
else
{
platform = ParsePlatform(value, diagnostics);
}
continue;
case "recurse":
value = RemoveQuotesAndSlashes(valueMemory);
if (value == null)
{
break; // force 'unrecognized option'
}
else if (RoslynString.IsNullOrEmpty(value))
{
AddDiagnostic(diagnostics, ErrorCode.ERR_NoFileSpec, arg);
}
else
{
int before = sourceFiles.Count;
sourceFiles.AddRange(ParseRecurseArgument(value, baseDirectory, diagnostics));
if (sourceFiles.Count > before)
{
sourceFilesSpecified = true;
}
}
continue;
case "generatedfilesout":
value = RemoveQuotesAndSlashes(valueMemory);
if (string.IsNullOrWhiteSpace(value))
{
AddDiagnostic(diagnostics, ErrorCode.ERR_SwitchNeedsString, MessageID.IDS_Text.Localize(), arg);
}
else
{
generatedFilesOutputDirectory = ParseGenericPathToFile(value, diagnostics, baseDirectory);
}
continue;
case "doc":
parseDocumentationComments = true;
value = valueMemoryString();
if (RoslynString.IsNullOrEmpty(value))
{
AddDiagnostic(diagnostics, ErrorCode.ERR_SwitchNeedsString, MessageID.IDS_Text.Localize(), arg);
continue;
}
string? unquoted = RemoveQuotesAndSlashes(valueMemory);
if (RoslynString.IsNullOrEmpty(unquoted))
{
// CONSIDER: This diagnostic exactly matches dev11, but it would be simpler (and more consistent with /out)
// if we just let the next case handle /doc:"".
AddDiagnostic(diagnostics, ErrorCode.ERR_SwitchNeedsString, MessageID.IDS_Text.Localize(), "/doc:"); // Different argument.
}
else
{
documentationPath = ParseGenericPathToFile(unquoted, diagnostics, baseDirectory);
}
continue;
case "addmodule":
value = valueMemoryString();
if (value == null)
{
AddDiagnostic(diagnostics, ErrorCode.ERR_SwitchNeedsString, MessageID.IDS_Text.Localize(), "/addmodule:");
}
else if (value.Length == 0)
{
AddDiagnostic(diagnostics, ErrorCode.ERR_NoFileSpec, arg);
}
else
{
// NOTE(tomat): Dev10 used to report CS1541: ERR_CantIncludeDirectory if the path was a directory.
// Since we now support /referencePaths option we would need to search them to see if the resolved path is a directory.
// An error will be reported by the assembly manager anyways.
metadataReferences.AddRange(ParseSeparatedPaths(value).Select(path => new CommandLineReference(path, MetadataReferenceProperties.Module)));
resourcesOrModulesSpecified = true;
}
continue;
case "l":
case "link":
ParseAssemblyReferences(arg, valueMemory, diagnostics, embedInteropTypes: true, metadataReferences);
continue;
case "win32res":
win32ResourceFile = GetWin32Setting(arg, valueMemoryString(), diagnostics);
continue;
case "win32icon":
win32IconFile = GetWin32Setting(arg, valueMemoryString(), diagnostics);
continue;
case "win32manifest":
win32ManifestFile = GetWin32Setting(arg, valueMemoryString(), diagnostics);
noWin32Manifest = false;
continue;
case "nowin32manifest":
noWin32Manifest = true;
win32ManifestFile = null;
continue;
case "res":
case "resource":
if (valueMemory is null)
{
break; // Dev11 reports unrecognized option
}
var embeddedResource = ParseResourceDescription(arg, valueMemory.Value, baseDirectory, diagnostics, embedded: true);
if (embeddedResource != null)
{
managedResources.Add(embeddedResource);
resourcesOrModulesSpecified = true;
}
continue;
case "linkres":
case "linkresource":
if (valueMemory is null)
{
break; // Dev11 reports unrecognized option
}
var linkedResource = ParseResourceDescription(arg, valueMemory.Value, baseDirectory, diagnostics, embedded: false);
if (linkedResource != null)
{
managedResources.Add(linkedResource);
resourcesOrModulesSpecified = true;
}
continue;
case "sourcelink":
value = RemoveQuotesAndSlashes(valueMemory);
if (RoslynString.IsNullOrEmpty(value))
{
AddDiagnostic(diagnostics, ErrorCode.ERR_NoFileSpec, arg);
}
else
{
sourceLink = ParseGenericPathToFile(value, diagnostics, baseDirectory);
}
continue;
case "debug":
emitPdb = true;
// unused, parsed for backward compat only
value = RemoveQuotesAndSlashes(valueMemory);
if (value != null)
{
if (value.IsEmpty())
{
AddDiagnostic(diagnostics, ErrorCode.ERR_SwitchNeedsString, MessageID.IDS_Text.Localize(), name);
continue;
}
switch (value.ToLower())
{
case "full":
case "pdbonly":
debugInformationFormat = PathUtilities.IsUnixLikePlatform ? DebugInformationFormat.PortablePdb : DebugInformationFormat.Pdb;
break;
case "portable":
debugInformationFormat = DebugInformationFormat.PortablePdb;
break;
case "embedded":
debugInformationFormat = DebugInformationFormat.Embedded;
break;
default:
AddDiagnostic(diagnostics, ErrorCode.ERR_BadDebugType, value);
break;
}
}
continue;
case "debug+":
//guard against "debug+:xx"
if (valueMemory is not null)
break;
emitPdb = true;
debugPlus = true;
continue;
case "debug-":
if (valueMemory is not null)
break;
emitPdb = false;
debugPlus = false;
continue;
case "o":
case "optimize":
case "o+":
case "optimize+":
if (valueMemory is not null)
break;
optimize = true;
continue;
case "o-":
case "optimize-":
if (valueMemory is not null)
break;
optimize = false;
continue;
case "deterministic":
case "deterministic+":
if (valueMemory is not null)
break;
deterministic = true;
continue;
case "deterministic-":
if (valueMemory is not null)
break;
deterministic = false;
continue;
case "p":
case "parallel":
case "p+":
case "parallel+":
if (valueMemory is not null)
break;
concurrentBuild = true;
continue;
case "p-":
case "parallel-":
if (valueMemory is not null)
break;
concurrentBuild = false;
continue;
case "warnaserror":
case "warnaserror+":
if (valueMemory is null)
{
generalDiagnosticOption = ReportDiagnostic.Error;
// Reset specific warnaserror options (since last /warnaserror flag on the command line always wins),
// and bump warnings to errors.
warnAsErrors.Clear();
foreach (var key in diagnosticOptions.Keys)
{
if (diagnosticOptions[key] == ReportDiagnostic.Warn)
{
warnAsErrors[key] = ReportDiagnostic.Error;
}
}
continue;
}
if (valueMemory.Value.Length == 0)
{
AddDiagnostic(diagnostics, ErrorCode.ERR_SwitchNeedsNumber, name);
}
else
{
AddWarnings(warnAsErrors, ReportDiagnostic.Error, valueMemory.Value);
}
continue;
case "warnaserror-":
if (valueMemory is null)
{
generalDiagnosticOption = ReportDiagnostic.Default;
// Clear specific warnaserror options (since last /warnaserror flag on the command line always wins).
warnAsErrors.Clear();
continue;
}
if (valueMemory is not { Length: > 0 })
{
AddDiagnostic(diagnostics, ErrorCode.ERR_SwitchNeedsNumber, name);
}
else
{
var builder = ArrayBuilder<string>.GetInstance();
ParseWarnings(valueMemory.Value, builder);
foreach (var id in builder)
{
ReportDiagnostic ruleSetValue;
if (diagnosticOptions.TryGetValue(id, out ruleSetValue))
{
warnAsErrors[id] = ruleSetValue;
}
else
{
warnAsErrors[id] = ReportDiagnostic.Default;
}
}
builder.Free();
}
continue;
case "w":
case "warn":
value = RemoveQuotesAndSlashes(valueMemory);
if (value == null)
{
AddDiagnostic(diagnostics, ErrorCode.ERR_SwitchNeedsNumber, name);
continue;
}
int newWarningLevel;
if (string.IsNullOrEmpty(value) ||
!int.TryParse(value, NumberStyles.Integer, CultureInfo.InvariantCulture, out newWarningLevel))
{
AddDiagnostic(diagnostics, ErrorCode.ERR_SwitchNeedsNumber, name);
}
else if (newWarningLevel < 0)
{
AddDiagnostic(diagnostics, ErrorCode.ERR_BadWarningLevel, name);
}
else
{
warningLevel = newWarningLevel;
}
continue;
case "unsafe":
case "unsafe+":
if (valueMemory is not null)
break;
allowUnsafe = true;
continue;
case "unsafe-":
if (valueMemory is not null)
break;
allowUnsafe = false;
continue;
case "delaysign":
case "delaysign+":
if (valueMemory is not null)
{
break;
}
delaySignSetting = true;
continue;
case "delaysign-":
if (valueMemory is not null)
{
break;
}
delaySignSetting = false;
continue;