Commits on Aug 21, 2022

1. ttcn: add "template" ["(omit)" | "(value)" | "(present)"] …

   Modern TTCN3 has TemplateRestriction keywords, which improve detection
   of invalid template use at compile time. They simply add one of
   "(omit)", "(value)", "(present)" after the "template" keyword.
   
   Example:
   
    template (value) ts_FOO_Request(integer bar := 0) :=
    	{ member := bar };
   
    template (present) tr_FOO_Request(template integer bar := *) :=
    	{ member := bar };
   
   Before this patch, u-ctags would not tag these two definitons above,
   making my work on the Osmocom test suite hard. (See
   https://gitea.osmocom.org/ttcn3/osmo-ttcn3-hacks)
   
   At first I tried to exactly match the three keywords within the braces,
   but the token parsing does not support unrolling more than one token. So
   if an unmatching token follows after the opening brace, I cannot un-get
   the opening brace. The easiest solution, and one that also is tolerant
   to keyword typos, is to just accept any braces after "template".
   
   Related: ETSI ES 201 873-1 V4.14.1 § A.1.6.1.3

   

   neeels committed Aug 21, 2022
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