private static (CSharpCompilationOptions, CSharpParseOptions, Encoding) CreateCSharpCompilationOptions(CompilationOptionsReader pdbReader)
{
var pdbCompilationOptions = pdbReader.GetCompilationOptions();
var langVersionString = pdbCompilationOptions.GetUniqueOption("language-version");
var optimization = pdbCompilationOptions.GetUniqueOption("optimization");
// TODO: Check portability policy if needed
// pdbCompilationOptions.TryGetValue("portability-policy", out var portabilityPolicyString);
pdbCompilationOptions.TryGetUniqueOption("default-encoding", out var defaultEncoding);
pdbCompilationOptions.TryGetUniqueOption("fallback-encoding", out var fallbackEncoding);
pdbCompilationOptions.TryGetUniqueOption("define", out var define);
pdbCompilationOptions.TryGetUniqueOption("checked", out var checkedString);
pdbCompilationOptions.TryGetUniqueOption("nullable", out var nullable);
pdbCompilationOptions.TryGetUniqueOption("unsafe", out var unsafeString);
var encodingString = defaultEncoding ?? fallbackEncoding;
var encoding = encodingString is null
? Encoding.UTF8
: Encoding.GetEncoding(encodingString);
CS.LanguageVersionFacts.TryParse(langVersionString, out var langVersion);
var preprocessorSymbols = define == null
? ImmutableArray <string> .Empty
: define.Split(';').ToImmutableArray();
var parseOptions = CSharpParseOptions.Default.WithLanguageVersion(langVersion)
.WithPreprocessorSymbols(preprocessorSymbols);
var(optimizationLevel, _) = GetOptimizationLevel(optimization);
var nullableOptions = nullable is null
? NullableContextOptions.Disable
: (NullableContextOptions)Enum.Parse(typeof(NullableContextOptions), nullable);
var compilationOptions = new CSharpCompilationOptions(
pdbReader.GetOutputKind(),
reportSuppressedDiagnostics: false,
moduleName: null,
mainTypeName: null,
scriptClassName: null,
usings: null,
optimizationLevel,
!string.IsNullOrEmpty(checkedString) && bool.Parse(checkedString),
!string.IsNullOrEmpty(unsafeString) && bool.Parse(unsafeString),
cryptoKeyContainer: null,
cryptoKeyFile: null,
cryptoPublicKey: default,
public Compilation CreateCompilation(MetadataReader metadataReader, string name)
{
var pdbReader = new CompilationOptionsReader(metadataReader);
var pdbCompilationOptions = pdbReader.GetCompilationOptions();
if (pdbCompilationOptions.Length == 0)
{
throw new InvalidDataException("Did not find compilation options in pdb");
}
if (pdbCompilationOptions.TryGetUniqueOption("language", out var language))
{
var compilation = language switch
{
LanguageNames.CSharp => CreateCSharpCompilation(pdbReader, name),
LanguageNames.VisualBasic => CreateVisualBasicCompilation(pdbReader, name),
_ => throw new InvalidDataException($"{language} is not a known language")
};
return(compilation);
}
throw new InvalidDataException("Did not find language in compilation options");
}