internal static ConstantInfo?Load(Module module, int parentToken)
{
var image = module.Image;
int rid;
if (!image.GetConstantByParent(MetadataToken.CompressHasConstant(parentToken), out rid))
{
return(null);
}
ConstantRow row;
image.GetConstant(rid, out row);
byte[] data = image.GetBlob(row.Value);
switch (row.Type)
{
case ConstantTableType.Boolean:
return(new ConstantInfo(BitConverter.ToBoolean(data, 0), ConstantType.Bool));
case ConstantTableType.I1:
return(new ConstantInfo((sbyte)data[0], ConstantType.Int8));
case ConstantTableType.I2:
return(new ConstantInfo(BitConverter.ToInt16(data, 0), ConstantType.Int16));
case ConstantTableType.I4:
return(new ConstantInfo(BitConverter.ToInt32(data, 0), ConstantType.Int32));
case ConstantTableType.I8:
return(new ConstantInfo(BitConverter.ToInt64(data, 0), ConstantType.Int64));
case ConstantTableType.U1:
return(new ConstantInfo(data[0], ConstantType.UInt8));
case ConstantTableType.U2:
return(new ConstantInfo(BitConverter.ToUInt16(data, 0), ConstantType.UInt16));
case ConstantTableType.U4:
return(new ConstantInfo(BitConverter.ToUInt32(data, 0), ConstantType.UInt32));
case ConstantTableType.U8:
return(new ConstantInfo(BitConverter.ToUInt64(data, 0), ConstantType.UInt64));
case ConstantTableType.R4:
return(new ConstantInfo(BitConverter.ToSingle(data, 0), ConstantType.Float32));
case ConstantTableType.R8:
return(new ConstantInfo(BitConverter.ToDouble(data, 0), ConstantType.Float64));
case ConstantTableType.Char:
return(new ConstantInfo(BitConverter.ToInt16(data, 0), ConstantType.Char));
case ConstantTableType.String:
return(new ConstantInfo(
data != null ? Encoding.Unicode.GetString(data) : string.Empty,
ConstantType.String));
case ConstantTableType.Class:
return(new ConstantInfo(null, ConstantType.Nullref));
default:
{
if (data == null)
{
return(null);
}
return(new ConstantInfo(data, ConstantType.ByteArray));
}
}
}
