} // GetToTpmFieldsMarshalOps()
public static List <string> GetFromTpmFieldsMarshalOps(StructField[] fields)
{
var marshalOps = new List <string>();
foreach (StructField f in fields)
{
int size = f.Type.GetSize();
string fieldName = ThisMember + f.Name;
switch (f.MarshalType)
{
case MarshalType.Normal:
if (f.IsValueType())
{
marshalOps.Add($"{fieldName} = buf.read{WireNameForInt(size)}()");
}
else
{
marshalOps.Add(TargetLang.Cpp ? $"{fieldName}.initFromTpm(buf)"
: $"{fieldName} = {f.TypeName}.fromTpm(buf)");
}
if (f.Attrs.HasFlag(StructFieldAttr.TermOnNull))
{
marshalOps.Add(TargetLang.If($"{fieldName} == {TpmTypes.AlgNull}") + " return");
}
break;
case MarshalType.ConstantValue:
// TODO: Add assertion by comparing with the expected constant
marshalOps.Add($"buf.read{WireNameForInt(size)}()");
break;
case MarshalType.SizedStruct:
Debug.Assert(f.SizeTagField != null);
marshalOps.Add(TargetLang.Cpp ? $"buf.readSizedObj({fieldName})"
: $"{fieldName} = buf.createSizedObj({TargetLang.TypeInfo(f.TypeName)})");
break;
case MarshalType.EncryptedVariableLengthArray:
marshalOps.Add($"{fieldName} = buf.readByteBuf(buf.getCurStuctRemainingSize())");
break;
case MarshalType.SpecialVariableLengthArray:
// TPMT_HA size is inferred from the hash algorithm
Debug.Assert(f.IsByteBuffer() && f.SizeTagField.Type.GetSize() == 2);
marshalOps.Add($"{fieldName} = buf.readByteBuf({TargetLang.DigestSize(f.SizeTagField.Name)})");
break;
case MarshalType.VariableLengthArray:
var sizeTagLen = f.SizeTagField.Type.GetSize();
if (f.IsByteBuffer())
{
marshalOps.Add($"{fieldName} = buf.readSizedByteBuf(" + (sizeTagLen == 2 ? ")" : $"{sizeTagLen})"));
}
else if (f.IsValueType())
{
marshalOps.Add(TargetLang.Cpp ? $"buf.readValArr({fieldName}, {f.Type.GetSize()})"
: $"{fieldName} = buf.readValArr({f.Type.GetSize()})");
}
else
{
marshalOps.Add(TargetLang.Cpp ? $"buf.readObjArr({fieldName})"
: $"{fieldName} = buf.readObjArr({TargetLang.TypeInfo(f.TypeName.TrimEnd('[', ']'))})");
}
break;
case MarshalType.UnionSelector:
var localVar = TargetLang.LocalVar(f.Name, f.TypeName);
marshalOps.Add($"{localVar} = " +
(f.IsValueType() ? $"buf.read{WireNameForInt(size)}()" : $"{f.TypeName}.fromTpm(buf)"));
break;
case MarshalType.UnionObject:
var selector = (f as UnionField).UnionSelector.Name;
marshalOps.Add(TargetLang.Cpp ? $"UnionFactory::Create({fieldName}, {selector})"
: $"{fieldName} = UnionFactory.create({TargetLang.Quote(f.TypeName)}, {selector})");
marshalOps.Add($"{fieldName}{TargetLang.Member}initFromTpm(buf)");
break;
default:
break;
}
}
return(marshalOps);
} // GetFromTpmFieldsMarshalOps()
public static List <string> GetToTpmFieldsMarshalOps(StructField[] fields)
{
var marshalOps = new List <string>();
foreach (StructField f in fields)
{
int size = f.Type.GetSize();
string fieldName = ThisMember + f.Name;
switch (f.MarshalType)
{
case MarshalType.Normal:
if (f.IsValueType())
{
marshalOps.Add($"buf.write{WireNameForInt(size)}({fieldName})");
}
else
{
marshalOps.Add($"{fieldName}.toTpm(buf)");
}
if (f.Attrs.HasFlag(StructFieldAttr.TermOnNull))
{
marshalOps.Add(TargetLang.If($"{fieldName} == {TpmTypes.AlgNull}") + " return");
}
break;
case MarshalType.ConstantValue:
marshalOps.Add($"buf.write{WireNameForInt(size)}({ConstTag(f)})");
break;
case MarshalType.SizedStruct:
Debug.Assert(f.SizeTagField != null);
marshalOps.Add($"buf.writeSizedObj({fieldName})");
break;
case MarshalType.EncryptedVariableLengthArray:
case MarshalType.SpecialVariableLengthArray:
// TPMT_HA size is tagged by its hash alg (the first field)
marshalOps.Add($"buf.writeByteBuf({fieldName})");
break;
case MarshalType.VariableLengthArray:
var sizeTagLen = f.SizeTagField.Type.GetSize();
if (f.IsByteBuffer())
{
marshalOps.Add($"buf.writeSizedByteBuf({fieldName}" + (sizeTagLen == 2 ? ")" : $", {sizeTagLen})"));
}
else if (f.IsValueType())
{
marshalOps.Add($"buf.writeValArr({fieldName}, {size})");
}
else
{
marshalOps.Add($"buf.writeObjArr({fieldName})");
}
break;
case MarshalType.UnionSelector:
// A trick to allow using default-constructed TPMT_SENSITIVE as an empty (non-marshaling) object
string unionField = ThisMember + f.RelatedUnion.Name;
if (f == fields.First())
{
marshalOps.Add(TargetLang.If($"{unionField} == {TargetLang.Null}") + " return");
}
marshalOps.Add($"buf.write{WireNameForInt(size)}({unionField}{TargetLang.Member}GetUnionSelector())");
break;
case MarshalType.UnionObject:
marshalOps.Add($"{fieldName}{TargetLang.Member}toTpm(buf)");
break;
default:
Debug.Assert(false);
break;
}
}
return(marshalOps);
} // GetToTpmFieldsMarshalOps()