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Crosstag with nested elements [message #1859732]

Fri, 23 June 2023 15:21

Moritz Klass

Messages: 22
Registered: August 2020

Junior Member

Hey guys,
I have the following situation: I have a record of two records.

    type record MME {
        MME_Header mme_header,
        MME_Payload mme_payload
    }

MME_Header looking like this:

  
type record MME_Header{
        MMV_TYPE mmv,
        MM_TYPE mmtype_hex optional,
        MMTYPE mmtype optional,
        Fmi_TYPE fmi optional,
        Fmsn_TYPE fmsn optional
    }

And MME_Payload like that:

type record MME_Payload{
        union  {
        CM_SLAC_PARM_REQ cm_slac_parm_req,
        CM_SLAC_PARM_CNF cm_slac_parm_cnf,
        CM_START_ATTEN_CHAR_IND cm_start_atten_char_ind,
        CM_ATTEN_CHAR_IND cm_atten_char_ind,
        CM_ATTEN_CHAR_RSP cm_atten_char_rsp,
        CM_ATTEN_PROFILE_IND cm_atten_profile_ind,
        CM_MNBC_SOUND_IND cm_mnbc_sound_ind,
        CM_VALIDATE_REQ cm_validate_req,
        CM_VALIDATE_CNF cm_validate_cnf,
        CM_SLAC_MATCH_REQ cm_slac_match_req,
        CM_SLAC_MATCH_CNF cm_slac_match_cnf,
        CM_SET_KEY_REQ cm_set_key_req,
        CM_SET_KEY_CNF cm_set_key_cnf,
        VS_PL_LNK_STATUS_REQ vs_pl_lnk_status_req,
        VS_PL_LNK_STATUS_CNF vs_pl_lnk_status_cnf,
        CM_AMP_MAP_REQ cm_amp_map_req,
        CM_AMP_MAP_CNF cm_amp_map_cnf,
        VS_HST_ACTION_REQ vs_hst_action_req,
        VS_HST_ACTION_RSP vs_hst_action_rsp,
        CM_NW_STATS_REQ cm_nw_stats_req,
        CM_NW_STATS_CNF cm_nw_stats_cnf
        } payload 
     }
     with {
        variant ""
     }

I now want the field mme_header.mmtype_hex to determine the selected union member of mme_payload.payload so I tried this:

    type record MME{
        MME_Header mme_header,
        MME_Payload mme_payload
    }
    with {
        variant (mme_payload.payload) "CROSSTAG(cm_slac_parm_cnf, mme_header.mmtype_hex = '6065'H )";
        variant (mme_header) "FORCEOMIT(mmtype)";
    }

(You can ignore the FORCEOMIT, thats just a workaround.

But it does not seem to work, the payload-Union is decoded as its first element always despite mme_header.mmtype_hex being set correctly.

Is this construct legal and supposed to work?

Thanks,
Moritz

[Updated on: Fri, 23 June 2023 15:23]

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Re: Crosstag with nested elements [message #1859733 is a reply to message #1859732]

Fri, 23 June 2023 16:21

Gyorgy Rethy

Messages: 31
Registered: April 2015

Member

My twopence...

The field of the record to which CROSSTAG is added shall be the union it specifies. In your case the field mme_payload is a record, not a union. The purpose of the record wrapper in MME_Payload is unclear to me, it doesn't seem to do anything, so you can try:

type record MME{
MME_Header mme_header,
MME_Payload mme_payload
}
with {
variant (mme_payload) "CROSSTAG(
cm_slac_parm_cnf, mme_header.mmtype_hex = '6065'H;
<hex identifications for the other payload types>
)"
}

type union MME_Payload{
CM_SLAC_PARM_REQ cm_slac_parm_req,
...
} with {
variant ""
}

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Re: Crosstag with nested elements [message #1859735 is a reply to message #1859733]

Fri, 23 June 2023 17:30

Moritz Klass

Messages: 22
Registered: August 2020

Junior Member

Hey Gyorgy,
thanks for the response. I'm adapting an existing test suite and did want to avoid changes over all modules as often as possible but I think I will resort to that!

Thanks,
Moritz

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Re: Crosstag with nested elements [message #1859737 is a reply to message #1859735]

Fri, 23 June 2023 17:39

Moritz Klass

Messages: 22
Registered: August 2020

Junior Member

Small update: I guess the notation was used because template generation would be easier?

I am getting this error on a lot of templates:

 
error: value list notation cannot be used for union type `@DataStructure_SLAC.MME_Payload'

Example template:

    template MME_Payload md_CMN_CmAmpMapReq_002(
                        in template(present) Amlen_TYPE p_amlen,
                        in template(present) ListofAmdata_TYPE p_listAmdata) := {
        {
            cm_amp_map_req := {
                amlen := p_amlen ,
                listAmdata := p_listAmdata
            }
        }
    }

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