bool ReadCore(out TypeSig type, out object value)
{
if (!recursionCounter.Increment())
{
type = null;
value = null;
return(false);
}
bool res;
ITypeDefOrRef tdr;
UTF8String ns, name;
var et = (ElementType)reader.ReadByte();
switch (et)
{
case ElementType.Boolean:
type = module.CorLibTypes.Boolean;
value = reader.ReadBoolean();
if (reader.Position < reader.Length)
{
type = ReadTypeDefOrRefSig();
}
res = true;
break;
case ElementType.Char:
type = module.CorLibTypes.Char;
value = (char)reader.ReadUInt16();
if (reader.Position < reader.Length)
{
type = ReadTypeDefOrRefSig();
}
res = true;
break;
case ElementType.I1:
type = module.CorLibTypes.SByte;
value = reader.ReadSByte();
if (reader.Position < reader.Length)
{
type = ReadTypeDefOrRefSig();
}
res = true;
break;
case ElementType.U1:
type = module.CorLibTypes.Byte;
value = reader.ReadByte();
if (reader.Position < reader.Length)
{
type = ReadTypeDefOrRefSig();
}
res = true;
break;
case ElementType.I2:
type = module.CorLibTypes.Int16;
value = reader.ReadInt16();
if (reader.Position < reader.Length)
{
type = ReadTypeDefOrRefSig();
}
res = true;
break;
case ElementType.U2:
type = module.CorLibTypes.UInt16;
value = reader.ReadUInt16();
if (reader.Position < reader.Length)
{
type = ReadTypeDefOrRefSig();
}
res = true;
break;
case ElementType.I4:
type = module.CorLibTypes.Int32;
value = reader.ReadInt32();
if (reader.Position < reader.Length)
{
type = ReadTypeDefOrRefSig();
}
res = true;
break;
case ElementType.U4:
type = module.CorLibTypes.UInt32;
value = reader.ReadUInt32();
if (reader.Position < reader.Length)
{
type = ReadTypeDefOrRefSig();
}
res = true;
break;
case ElementType.I8:
type = module.CorLibTypes.Int64;
value = reader.ReadInt64();
if (reader.Position < reader.Length)
{
type = ReadTypeDefOrRefSig();
}
res = true;
break;
case ElementType.U8:
type = module.CorLibTypes.UInt64;
value = reader.ReadUInt64();
if (reader.Position < reader.Length)
{
type = ReadTypeDefOrRefSig();
}
res = true;
break;
case ElementType.R4:
type = module.CorLibTypes.Single;
value = reader.ReadSingle();
res = true;
break;
case ElementType.R8:
type = module.CorLibTypes.Double;
value = reader.ReadDouble();
res = true;
break;
case ElementType.String:
type = module.CorLibTypes.String;
value = ReadString();
res = true;
break;
case ElementType.Ptr:
res = Read(out type, out value);
if (res)
{
type = new PtrSig(type);
}
break;
case ElementType.ByRef:
res = Read(out type, out value);
if (res)
{
type = new ByRefSig(type);
}
break;
case ElementType.Object:
type = module.CorLibTypes.Object;
value = null;
res = true;
break;
case ElementType.ValueType:
tdr = ReadTypeDefOrRef();
type = tdr.ToTypeSig();
value = null;
if (GetName(tdr, out ns, out name) && ns == stringSystem && tdr.DefinitionAssembly.IsCorLib())
{
if (name == stringDecimal)
{
if (reader.Length - reader.Position != 13)
{
goto default;
}
try {
byte b = reader.ReadByte();
value = new Decimal(reader.ReadInt32(), reader.ReadInt32(), reader.ReadInt32(), (b & 0x80) != 0, (byte)(b & 0x7F));
}
catch {
goto default;
}
}
else if (name == stringDateTime)
{
if (reader.Length - reader.Position != 8)
{
goto default;
}
try {
value = new DateTime(reader.ReadInt64());
}
catch {
goto default;
}
}
}
if (value == null && reader.Position != reader.Length)
{
value = reader.ReadRemainingBytes();
}
res = true;
break;
case ElementType.Class:
type = new ClassSig(ReadTypeDefOrRef());
value = reader.Position == reader.Length ? null : reader.ReadRemainingBytes();
res = true;
break;
case ElementType.CModReqd:
tdr = ReadTypeDefOrRef();
res = Read(out type, out value);
if (res)
{
type = new CModReqdSig(tdr, type);
}
break;
case ElementType.CModOpt:
tdr = ReadTypeDefOrRef();
res = Read(out type, out value);
if (res)
{
type = new CModOptSig(tdr, type);
}
break;
case ElementType.Var:
case ElementType.Array:
case ElementType.GenericInst:
case ElementType.TypedByRef:
case ElementType.I:
case ElementType.U:
case ElementType.FnPtr:
case ElementType.SZArray:
case ElementType.MVar:
case ElementType.End:
case ElementType.Void:
case ElementType.ValueArray:
case ElementType.R:
case ElementType.Internal:
case ElementType.Module:
case ElementType.Sentinel:
case ElementType.Pinned:
default:
Debug.Fail("Unsupported element type in LocalConstant sig blob: " + et.ToString());
res = false;
type = null;
value = null;
break;
}
recursionCounter.Decrement();
return(res);
}
