private TType DecodeModifiedType(ref BlobReader blobReader, bool isRequired)
{
TType modifier = DecodeTypeHandle(ref blobReader, 0, allowTypeSpecifications: true);
TType unmodifiedType = DecodeType(ref blobReader);
return(_provider.GetModifiedType(modifier, unmodifiedType, isRequired));
}
// Decodes a type with custom modifiers starting with the first modifier type that is required iff isRequired is passed,\
// followed by an optional sequence of additional modifiers (<SignaureTypeCode.Required|OptionalModifier> <type>) and
// terminated by the unmodified type.
private static TType DecodeModifiedType <TType>(ref BlobReader blobReader, ISignatureTypeProvider <TType> provider, bool isRequired)
{
TType type = DecodeTypeHandle(ref blobReader, provider, null);
var modifier = new CustomModifier <TType>(type, isRequired);
ImmutableArray <CustomModifier <TType> > modifiers;
int typeCode = blobReader.ReadCompressedInteger();
isRequired = typeCode == (int)SignatureTypeCode.RequiredModifier;
if (!isRequired && typeCode != (int)SignatureTypeCode.OptionalModifier)
{
// common case: 1 modifier.
modifiers = ImmutableArray.Create(modifier);
}
else
{
// uncommon case: multiple modifiers.
var builder = ImmutableArray.CreateBuilder <CustomModifier <TType> >();
builder.Add(modifier);
do
{
type = DecodeTypeHandle(ref blobReader, provider, null);
modifier = new CustomModifier <TType>(type, isRequired);
builder.Add(modifier);
typeCode = blobReader.ReadCompressedInteger();
isRequired = typeCode == (int)SignatureTypeCode.RequiredModifier;
} while (isRequired || typeCode == (int)SignatureTypeCode.OptionalModifier);
modifiers = builder.ToImmutable();
}
TType unmodifiedType = DecodeType(ref blobReader, typeCode, provider);
return(provider.GetModifiedType(unmodifiedType, modifiers));
}
private TType DecodeModifiedType(ref BlobReader blobReader, bool isRequired)
{
TType modifier = DecodeTypeHandle(ref blobReader, SignatureTypeHandleCode.Unresolved, allowTypeSpecifications: true);
TType unmodifiedType = DecodeType(ref blobReader);
return(_provider.GetModifiedType(_metadataReaderOpt, isRequired, modifier, unmodifiedType));
}
private TType DecodeModifiedType(ref BlobReader blobReader, bool isRequired)
{
EntityHandle modifier = blobReader.ReadTypeHandle();
TType unmodifiedType = DecodeType(ref blobReader);
return(_provider.GetModifiedType(_metadataReaderOpt, isRequired, modifier, unmodifiedType));
}