// internal for testing
internal static IReadOnlyDictionary <AnonymousTypeKey, AnonymousTypeValue> GetAnonymousTypeMapFromMetadata(MetadataReader reader, MetadataDecoder metadataDecoder)
{
var result = new Dictionary <AnonymousTypeKey, AnonymousTypeValue>();
foreach (var handle in reader.TypeDefinitions)
{
var def = reader.GetTypeDefinition(handle);
if (!def.Namespace.IsNil)
{
continue;
}
if (!reader.StringComparer.StartsWith(def.Name, GeneratedNames.AnonymousNamePrefix))
{
continue;
}
var metadataName = reader.GetString(def.Name);
short arity;
var name = MetadataHelpers.InferTypeArityAndUnmangleMetadataName(metadataName, out arity);
int index;
if (GeneratedNames.TryParseAnonymousTypeTemplateName(name, out index))
{
var builder = ArrayBuilder <AnonymousTypeKeyField> .GetInstance();
if (TryGetAnonymousTypeKey(reader, def, builder))
{
var type = (NamedTypeSymbol)metadataDecoder.GetTypeOfToken(handle);
var key = new AnonymousTypeKey(builder.ToImmutable());
var value = new AnonymousTypeValue(name, index, type.GetCciAdapter());
result.Add(key, value);
}
builder.Free();
}
}
return(result);
}
private static IReadOnlyDictionary<AnonymousTypeKey, AnonymousTypeValue> GetAnonymousTypeMap(
MetadataReader reader,
Symbols.Metadata.PE.MetadataDecoder metadataDecoder)
{
var result = new Dictionary<AnonymousTypeKey, AnonymousTypeValue>();
foreach (var handle in reader.TypeDefinitions)
{
var def = reader.GetTypeDefinition(handle);
if (!def.Namespace.IsNil)
{
continue;
}
if (!reader.StringStartsWith(def.Name, GeneratedNames.AnonymousNamePrefix))
{
continue;
}
var metadataName = reader.GetString(def.Name);
short arity;
var name = MetadataHelpers.InferTypeArityAndUnmangleMetadataName(metadataName, out arity);
int index;
if (GeneratedNames.TryParseAnonymousTypeTemplateName(name, out index))
{
var builder = ArrayBuilder<string>.GetInstance();
if (TryGetAnonymousTypeKey(reader, def, builder))
{
var type = (NamedTypeSymbol)metadataDecoder.GetTypeOfToken(handle);
var key = new AnonymousTypeKey(builder.ToImmutable());
var value = new AnonymousTypeValue(name, index, type);
result.Add(key, value);
}
builder.Free();
}
}
return result;
}
internal bool TryFindAnonymousType(NamedTypeSymbol type, out AnonymousTypeValue otherType)
{
Debug.Assert((object)type.ContainingSymbol == (object)this.sourceAssembly.GlobalNamespace);
Debug.Assert(AnonymousTypeManager.IsAnonymousTypeTemplate(type));
var key = new AnonymousTypeKey(AnonymousTypeManager.GetTemplatePropertyNames(type));
return this.anonymousTypeMap.TryGetValue(key, out otherType);
}
// internal for testing
internal static IReadOnlyDictionary <AnonymousTypeKey, AnonymousTypeValue> GetAnonymousTypeMapFromMetadata(MetadataReader reader, MetadataDecoder metadataDecoder)
{
// In general, the anonymous type name is "<{module-id}>f__AnonymousType{index}#{submission-index}",
// but EnC is not supported for modules nor submissions. Hence we only look for type names with no module id and no submission index.
const string AnonymousNameWithoutModulePrefix = "<>f__AnonymousType";
var result = new Dictionary <AnonymousTypeKey, AnonymousTypeValue>();
foreach (var handle in reader.TypeDefinitions)
{
var def = reader.GetTypeDefinition(handle);
if (!def.Namespace.IsNil)
{
continue;
}
if (!reader.StringComparer.StartsWith(def.Name, AnonymousNameWithoutModulePrefix))
{
continue;
}
var metadataName = reader.GetString(def.Name);
var name = MetadataHelpers.InferTypeArityAndUnmangleMetadataName(metadataName, out _);
if (name.StartsWith(AnonymousNameWithoutModulePrefix, StringComparison.Ordinal) &&
int.TryParse(name.Substring(AnonymousNameWithoutModulePrefix.Length), NumberStyles.None, CultureInfo.InvariantCulture, out int index))
{
var builder = ArrayBuilder <AnonymousTypeKeyField> .GetInstance();
if (TryGetAnonymousTypeKey(reader, def, builder))
{
var type = (NamedTypeSymbol)metadataDecoder.GetTypeOfToken(handle);
var key = new AnonymousTypeKey(builder.ToImmutable());
var value = new AnonymousTypeValue(name, index, type.GetCciAdapter());
result.Add(key, value);
}
builder.Free();
}
}
return(result);
}
