Parsing Error: pyparsing.ParseException: Expected "DEFINITIONS"

[twix1312]

I'm trying to convert an LTE specification's ASN.1 syntax into python code and ran the file (see attached zip) in pyasn1gen.py.

I received the following error:

Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/asn1ate/pyasn1gen.py", line 649, in <module>
    sys.exit(main())
  File "/usr/lib/python2.7/site-packages/asn1ate/pyasn1gen.py", line 627, in main
    parse_tree = parser.parse_asn1(asn1def)
  File "/usr/lib/python2.7/site-packages/asn1ate/parser.py", line 40, in parse_asn1
    parse_result = grammar.parseString(asn1_definition)
  File "/usr/lib/python2.7/site-packages/pyparsing.py", line 1632, in parseString
    raise exc
pyparsing.ParseException: Expected "DEFINITIONS" (at char 195), (line:8, col:13)

The attached file was taken from here. I had to filter out the ASN.1 definitions and remove unwanted text.

I might have made a mistake doing that. Could you please help? gtp.zip

[kimgr]

It might be a while until I get to this, but this: pyparsing.ParseException: Expected "DEFINITIONS" (at char 195), (line:8, col:13) is a good place to start. You can run your ASN.1 through http://asn1-playground.oss.com/ first, to make sure it's valid.

asn1ate does not support all of ASN.1 so there may be something that's missing, and the line/column from the error message might give a clue as to what it is.

[twix1312]

Hi,

Thanks for suggesting that link. There were some ASN errors that I've fixed. Now the compilation of the ASN.1 file works fine at that link.

However, pyasn1.gen.py gives a new error: Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/asn1ate/pyasn1gen.py", line 649, in sys.exit(main()) File "/usr/lib/python2.7/site-packages/asn1ate/pyasn1gen.py", line 627, in main parse_tree = parser.parse_asn1(asn1def) File "/usr/lib/python2.7/site-packages/asn1ate/parser.py", line 40, in parse_asn1 parse_result = grammar.parseString(asn1_definition) File "/usr/lib/python2.7/site-packages/pyparsing.py", line 1632, in parseString raise exc pyparsing.ParseException: Expected "END" (at char 6111), (line:195, col:37)

Attaching the updated ASN.1 file.

Any help would be appreciated.

Thanks a bunch!

On Thu, Nov 16, 2017 at 3:51 PM, Kim Gräsman notifications@github.com wrote:

It might be a while until I get to this, but this: pyparsing.ParseException: Expected "DEFINITIONS" (at char 195), (line:8, col:13) is a good place to start. You can run your ASN.1 through http://asn1-playground.oss.com/ first, to make sure it's valid.

asn1ate does not support all of ASN.1 so there may be something that's missing, and the line/column from the error message might give a clue as to what it is.

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub https://github.com/kimgr/asn1ate/issues/58#issuecomment-344879179, or mute the thread https://github.com/notifications/unsubscribe-auth/AejhoIbpuU19q4WXwpIVotIvby6ELfEyks5s3AyMgaJpZM4QgNXl .

gtp.zip

[kimgr]

So is line 195, col 37 at the end of the file? Can you upload the ASN.1 as text so I can see it?

[twix1312]

I've attached the ASN.1 as a textfile (its 6600 lines long!)

If you just want that specific portion: FROM S1AP-Constants;

-- **************************************************************
--
-- Interface Elementary Procedure Class
--
-- **************************************************************

S1AP-ELEMENTARY-PROCEDURE ::= CLASS {
    &InitiatingMessage              ,
    &SuccessfulOutcome                          OPTIONAL,
    &UnsuccessfulOutcome                        OPTIONAL,
    &procedureCode              ProcedureCode   UNIQUE,
    &criticality                Criticality     DEFAULT ignore
}

its the "{" brace after "S1AP-ELEMENTARY-PROCEDURE ::= CLASS". gtp.txt

[kimgr]

Yeah, that explains it. asn1ate doesn't support CLASSes, and I don't really know where to start on that, so I think it's safe to assume that it won't do so unless you can spare time to work on it yourself.