mouse07410
Problem parsing ISO-TS-19091-addgrp-C-2018.asn
Trying to parse the following: https://standards.iso.org/iso/ts/19091/ed-2/en/ISO-TS-19091-addgrp-C-2018.asn
With the statement below:
asn1c ISO-TS-19091-addgrp-C-2018.asn
Resulting in:
ASN.1 grammar parse error near line 244 (token "IDENTIFIED"): syntax error, unexpected TOK_capitalreference, expecting '}' Cannot parse "ISO-TS-19091-addgrp-C-2018.asn"
Any ideas? Help is much appreciated.
Sorry, I don't know. In general, the newer "baroque"-style ASN.1 goes poorly with asn1c, which is moch better suited towards simpler ASN.1 definitions...
Maybe somebody else here could comment...?
The simple answer is that asn1c just doesn't support the token IDENTIFIED BY (X.681 10.7). However IDENTIFIED BY is not really a keyword. As I've been given to understand it is merely syntactic sugar that should make it more readable for humans.
You might be able to parse the grammar if you just removed it.
I am also not that well versed in this style of ASN.1. Frankly I find the entire grammar confusing. Implementing 3 modules - where each module use IMPORT from eachother to get type definitions from other modules. I can't tell where one module starts and another ends.
The module ´REGION´ in this case imports addGrpC and REG-EXT-ID-AND-TYPE from the module DSRC.
addGrpC just seems to be value reference with a constant equal to 3.
REG-EXT-ID-AND-TYPE is a CLASS
But the line
{ConnectionManeuverAssist-addGrpC IDENTIFIED BY addGrpC},
Suggests that the type ConnectionManeuverAssist-addGrpC which is imported from the module AddGrpC is IDENTIFIED BY the value addGrpC which was imported from DSRC. Shouldn't it have been:
{ConnectionManeuverAssist-addGrpC IDENTIFIED BY AddGrpC},
Or am I misunderstanding something?
