/// <summary>
/// Write a value
/// </summary>
/// <param name="argType">The ctor arg type, field type, or property type</param>
/// <param name="value">The value to write</param>
void WriteElem(TypeSig argType, CAArgument value)
{
if (argType is null)
{
helper.Error("Custom attribute: Arg type is null");
argType = value.Type;
if (argType is null)
{
return;
}
}
if (!recursionCounter.Increment())
{
helper.Error("Infinite recursion");
return;
}
TypeSig underlyingType;
ITypeDefOrRef tdr;
switch (argType.ElementType)
{
case ElementType.Boolean:
if (!VerifyTypeAndValue(value, ElementType.Boolean))
{
writer.WriteBoolean(ToUInt64(value.Value) != 0);
}
else
{
writer.WriteBoolean((bool)value.Value);
}
break;
case ElementType.Char:
if (!VerifyTypeAndValue(value, ElementType.Char))
{
writer.WriteUInt16((ushort)ToUInt64(value.Value));
}
else
{
writer.WriteUInt16((ushort)(char)value.Value);
}
break;
case ElementType.I1:
if (!VerifyTypeAndValue(value, ElementType.I1))
{
writer.WriteSByte((sbyte)ToUInt64(value.Value));
}
else
{
writer.WriteSByte((sbyte)value.Value);
}
break;
case ElementType.U1:
if (!VerifyTypeAndValue(value, ElementType.U1))
{
writer.WriteByte((byte)ToUInt64(value.Value));
}
else
{
writer.WriteByte((byte)value.Value);
}
break;
case ElementType.I2:
if (!VerifyTypeAndValue(value, ElementType.I2))
{
writer.WriteInt16((short)ToUInt64(value.Value));
}
else
{
writer.WriteInt16((short)value.Value);
}
break;
case ElementType.U2:
if (!VerifyTypeAndValue(value, ElementType.U2))
{
writer.WriteUInt16((ushort)ToUInt64(value.Value));
}
else
{
writer.WriteUInt16((ushort)value.Value);
}
break;
case ElementType.I4:
if (!VerifyTypeAndValue(value, ElementType.I4))
{
writer.WriteInt32((int)ToUInt64(value.Value));
}
else
{
writer.WriteInt32((int)value.Value);
}
break;
case ElementType.U4:
if (!VerifyTypeAndValue(value, ElementType.U4))
{
writer.WriteUInt32((uint)ToUInt64(value.Value));
}
else
{
writer.WriteUInt32((uint)value.Value);
}
break;
case ElementType.I8:
if (!VerifyTypeAndValue(value, ElementType.I8))
{
writer.WriteInt64((long)ToUInt64(value.Value));
}
else
{
writer.WriteInt64((long)value.Value);
}
break;
case ElementType.U8:
if (!VerifyTypeAndValue(value, ElementType.U8))
{
writer.WriteUInt64(ToUInt64(value.Value));
}
else
{
writer.WriteUInt64((ulong)value.Value);
}
break;
case ElementType.R4:
if (!VerifyTypeAndValue(value, ElementType.R4))
{
writer.WriteSingle((float)ToDouble(value.Value));
}
else
{
writer.WriteSingle((float)value.Value);
}
break;
case ElementType.R8:
if (!VerifyTypeAndValue(value, ElementType.R8))
{
writer.WriteDouble(ToDouble(value.Value));
}
else
{
writer.WriteDouble((double)value.Value);
}
break;
case ElementType.String:
if (VerifyTypeAndValue(value, ElementType.String, typeof(UTF8String)))
{
WriteUTF8String((UTF8String)value.Value);
}
else if (VerifyTypeAndValue(value, ElementType.String, typeof(string)))
{
WriteUTF8String((string)value.Value);
}
else
{
WriteUTF8String(UTF8String.Empty);
}
break;
case ElementType.ValueType:
tdr = ((TypeDefOrRefSig)argType).TypeDefOrRef;
underlyingType = GetEnumUnderlyingType(argType);
if (!(underlyingType is null))
{
WriteElem(underlyingType, value);
}
else if (tdr is TypeRef && TryWriteEnumUnderlyingTypeValue(value.Value))
{
// No error. Assume it's an enum that couldn't be resolved.
}
else
{
helper.Error("Custom attribute value is not an enum");
}
break;
/// <summary>
/// Write a value
/// </summary>
/// <param name="argType">The ctor arg type, field type, or property type</param>
/// <param name="value">The value to write</param>
void WriteElem(TypeSig argType, CAArgument value)
{
if (argType == null)
{
helper.Error("Custom attribute: Arg type is null");
argType = value.Type;
if (argType == null)
{
return;
}
}
if (!recursionCounter.Increment())
{
helper.Error("Infinite recursion");
return;
}
TypeSig underlyingType;
ITypeDefOrRef tdr;
switch (argType.ElementType)
{
case ElementType.Boolean:
if (!VerifyTypeAndValue(value, ElementType.Boolean))
{
writer.WriteBoolean(ToUInt64(value.Value) != 0);
}
else
{
writer.WriteBoolean((bool)value.Value);
}
break;
case ElementType.Char:
if (!VerifyTypeAndValue(value, ElementType.Char))
{
writer.WriteUInt16((ushort)ToUInt64(value.Value));
}
else
{
writer.WriteUInt16((ushort)(char)value.Value);
}
break;
case ElementType.I1:
if (!VerifyTypeAndValue(value, ElementType.I1))
{
writer.WriteSByte((sbyte)ToUInt64(value.Value));
}
else
{
writer.WriteSByte((sbyte)value.Value);
}
break;
case ElementType.U1:
if (!VerifyTypeAndValue(value, ElementType.U1))
{
writer.WriteByte((byte)ToUInt64(value.Value));
}
else
{
writer.WriteByte((byte)value.Value);
}
break;
case ElementType.I2:
if (!VerifyTypeAndValue(value, ElementType.I2))
{
writer.WriteInt16((short)ToUInt64(value.Value));
}
else
{
writer.WriteInt16((short)value.Value);
}
break;
case ElementType.U2:
if (!VerifyTypeAndValue(value, ElementType.U2))
{
writer.WriteUInt16((ushort)ToUInt64(value.Value));
}
else
{
writer.WriteUInt16((ushort)value.Value);
}
break;
case ElementType.I4:
if (!VerifyTypeAndValue(value, ElementType.I4))
{
writer.WriteInt32((int)ToUInt64(value.Value));
}
else
{
writer.WriteInt32((int)value.Value);
}
break;
case ElementType.U4:
if (!VerifyTypeAndValue(value, ElementType.U4))
{
writer.WriteUInt32((uint)ToUInt64(value.Value));
}
else
{
writer.WriteUInt32((uint)value.Value);
}
break;
case ElementType.I8:
if (!VerifyTypeAndValue(value, ElementType.I8))
{
writer.WriteInt64((long)ToUInt64(value.Value));
}
else
{
writer.WriteInt64((long)value.Value);
}
break;
case ElementType.U8:
if (!VerifyTypeAndValue(value, ElementType.U8))
{
writer.WriteUInt64(ToUInt64(value.Value));
}
else
{
writer.WriteUInt64((ulong)value.Value);
}
break;
case ElementType.R4:
if (!VerifyTypeAndValue(value, ElementType.R4))
{
writer.WriteSingle((float)ToDouble(value.Value));
}
else
{
writer.WriteSingle((float)value.Value);
}
break;
case ElementType.R8:
if (!VerifyTypeAndValue(value, ElementType.R8))
{
writer.WriteDouble(ToDouble(value.Value));
}
else
{
writer.WriteDouble((double)value.Value);
}
break;
case ElementType.String:
if (VerifyTypeAndValue(value, ElementType.String, typeof(UTF8String)))
{
WriteUTF8String((UTF8String)value.Value);
}
else if (VerifyTypeAndValue(value, ElementType.String, typeof(string)))
{
WriteUTF8String((string)value.Value);
}
else
{
WriteUTF8String(UTF8String.Empty);
}
break;
case ElementType.ValueType:
tdr = ((TypeDefOrRefSig)argType).TypeDefOrRef;
underlyingType = GetEnumUnderlyingType(argType);
if (underlyingType != null)
{
WriteElem(underlyingType, value);
}
else if (tdr is TypeRef && TryWriteEnumUnderlyingTypeValue(value.Value))
{
// No error. Assume it's an enum that couldn't be resolved.
}
else
{
helper.Error("Custom attribute value is not an enum");
}
break;
case ElementType.Class:
tdr = ((TypeDefOrRefSig)argType).TypeDefOrRef;
if (CheckCorLibType(argType, "Type"))
{
if (CheckCorLibType(value.Type, "Type"))
{
if (value.Value is TypeSig ts)
{
WriteType(ts);
}
else if (value.Value == null)
{
WriteUTF8String(null);
}
else
{
helper.Error("Custom attribute value is not a type");
WriteUTF8String(UTF8String.Empty);
}
}
else
{
helper.Error("Custom attribute value type is not System.Type");
WriteUTF8String(UTF8String.Empty);
}
break;
}
else if (tdr is TypeRef && TryWriteEnumUnderlyingTypeValue(value.Value))
{
// No error. Assume it's an enum that couldn't be resolved.
break;
}
goto default;
case ElementType.SZArray:
WriteValue(argType, value);
break;
case ElementType.Object:
WriteFieldOrPropType(value.Type);
WriteElem(value.Type, value);
break;
case ElementType.End:
case ElementType.Void:
case ElementType.Ptr:
case ElementType.ByRef:
case ElementType.Var:
case ElementType.Array:
case ElementType.GenericInst:
case ElementType.TypedByRef:
case ElementType.ValueArray:
case ElementType.I:
case ElementType.U:
case ElementType.R:
case ElementType.FnPtr:
case ElementType.MVar:
case ElementType.CModReqd:
case ElementType.CModOpt:
case ElementType.Internal:
case ElementType.Module:
case ElementType.Sentinel:
case ElementType.Pinned:
default:
helper.Error("Invalid or unsupported element type in custom attribute");
break;
}
recursionCounter.Decrement();
}
