public static CustomMod Read(BinaryStreamReader signatureBlobReader, ElementType leadByte)
{
CustomMod result;
if (leadByte == ElementType.CMod_Opt)
{
result = new CustomMod();
result.Required = true;
}
else if (leadByte == ElementType.CMod_ReqD)
{
result = new CustomMod();
result.Required = false;
}
else
{
return null;
}
result.Type = signatureBlobReader.ReadTypeDefOrRefOrSpecEncoded();
return result;
}
public static Type Read(ElementType leadByte, BinaryStreamReader signatureBlobReader)
{
switch (leadByte)
{
case ElementType.End:
break;
case ElementType.Void:
break;
case ElementType.Boolean: return Boolean.Instance;
case ElementType.Char: return Char.Instance;
case ElementType.I1: return I1.Instance;
case ElementType.U1: return U1.Instance;
case ElementType.I2: return I2.Instance;
case ElementType.U2: return U2.Instance;
case ElementType.I4: return I4.Instance;
case ElementType.U4: return U4.Instance;
case ElementType.I8: return I8.Instance;
case ElementType.U8: return U8.Instance;
case ElementType.R4: return R4.Instance;
case ElementType.R8: return R8.Instance;
case ElementType.String: return String.Instance;
case ElementType.Ptr:
ElementType ptrLeadByte;
var ptrCustomMod = CustomMod.ReadCustomModArray(out ptrLeadByte, signatureBlobReader);
Ptr resultPtr;
if (ptrLeadByte == ElementType.Void)
{
resultPtr = Ptr.Void.Instance;
}
else
{
Type ptrType = Type.Read(ptrLeadByte, signatureBlobReader);
resultPtr = new Ptr.Type
{
PtrType = ptrType
};
}
resultPtr.CustomMods = ptrCustomMod;
return resultPtr;
case ElementType.ByRef:
break;
case ElementType.ValueType:
var valueTypeTypeDefOrRefOrSpecEncoded = signatureBlobReader.ReadTypeDefOrRefOrSpecEncoded();
return new ValueType { TypeDefOrRefEncoded = valueTypeTypeDefOrRefOrSpecEncoded };
case ElementType.Class:
var classTypeDefOrRefOrSpecEncoded = signatureBlobReader.ReadTypeDefOrRefOrSpecEncoded();
return new Class { TypeDefOrRefEncoded = classTypeDefOrRefOrSpecEncoded };
case ElementType.Var:
uint? varNumber = signatureBlobReader.ReadCompressedUInt32();
return new Var
{
Number = varNumber
};
case ElementType.Array:
// TODO: implement ArrayShape (ECMA-335 §23.2.13)
throw new NotImplementedException("TODO: implement ArrayShape (ECMA-335 §23.2.13).");
case ElementType.GenericInst:
var genericLeadByte = (ElementType)signatureBlobReader.ReadByte();
GenericInst genericInst;
switch (genericLeadByte)
{
case ElementType.Class:
genericInst = new GenericInst.Class();
break;
case ElementType.ValueType:
genericInst = new GenericInst.ValueType();
break;
default:
throw new BadImageFormatException("Invalid lead byte for "+ElementType.GenericInst+" class/valuetype value.");
}
var typeDefOrRefOrSpecEncoded = signatureBlobReader.ReadTypeDefOrRefOrSpecEncoded();
genericInst.TypeDefOrRefOrSpecEncoded = typeDefOrRefOrSpecEncoded;
uint? genArgCount = signatureBlobReader.ReadCompressedUInt32();
if (genArgCount == null)
throw new BadImageFormatException("Invalid null value for GenArgCount value in " + ElementType.GenericInst+".");
var genericInstTypes = new Type[genArgCount.Value];
for(int i = 0; i<genericInstTypes.Length; i++)
{
var genericInstTypeLeadByte = (ElementType)signatureBlobReader.ReadByte();
genericInstTypes[i] = Type.Read(genericInstTypeLeadByte, signatureBlobReader);
}
genericInst.Types = genericInstTypes;
return genericInst;
case ElementType.TypedByRef:
break;
case ElementType.I: return I.Instance;
case ElementType.U: return U.Instance;
case ElementType.FnPtr:
var methodDefSig = MethodSig.Read(signatureBlobReader);
return new FnPtr
{
MethodDefSig = methodDefSig
};
case ElementType.Object: return Object.Instance;
case ElementType.SZArray:
ElementType szArrayLeadByte;
var szArrayCustomMod = CustomMod.ReadCustomModArray(out szArrayLeadByte, signatureBlobReader);
var szArrayType = Type.Read(szArrayLeadByte, signatureBlobReader);
return new SZArray
{
CustomMods = szArrayCustomMod,
Type = szArrayType
};
case ElementType.MVar:
uint? mvarNumber = signatureBlobReader.ReadCompressedUInt32();
return new MVar
{
Number = mvarNumber
};
case ElementType.CMod_ReqD:
break;
case ElementType.CMod_Opt:
break;
case ElementType.Internal:
break;
case ElementType.Modifier:
break;
case ElementType.Sentinel:
break;
case ElementType.Pinned:
break;
case ElementType.R4_Hfa:
break;
case ElementType.R8_Hfa:
break;
case ElementType.ArgumentType_:
break;
case ElementType.CustomAttribute_BoxedObject_:
break;
case ElementType.CustomAttribute_Field_:
break;
case ElementType.CustomAttribute_Property_:
break;
case ElementType.CustomAttribute_Enum_:
break;
default:
break;
}
throw new BadImageFormatException("Invalid lead byte "+leadByte+".");
}