Open harmic opened 3 years ago
Yeah, 'Value References' / constants are not supported, yet. But I already plan to implement them soon-ish, because I'll need them myself as well.
Out of curiosity, is the .asn file you tested publicly available? I just recently discovered forge.etis.org and 3gpp there does not seem to have any public repo?
For some reason, 3GPP don't seem to publish the ASN1 files as plain text files you can download, rather they include them embedded in the specifications (word docs). You need to download the word doc and copy/paste the ASN1 file.
The spec I was using was 36.331 (LTE RRC protocol). You can download this from the 3GPP site here. Go to the versions tab, choose a version, and click the version number to download a zip file containing a word doc.
I have not found anywhere to reliably download the raw ASN1 files.
The file I was using contains vendor extensions so unfortunately I am not at liberty to share it.
The asn1rs parser currently fails on this:
with this error:
Looking at the source I can see it is expecting an integer literal there, but the ASN1 source I am trying to parse has a 'Value Reference' (ie a name referencing a value assigned elsewhere in the file).
X.680 says this:
The name
maxDRB
is defined later in the ASN1 source file as:It is not clear to me how 'Value References' can be implemented, because the definition of the reference apparently doesn't come before the usage of it in the source file.