1 Feb
2018
1 Feb
'18
1:13 a.m.
Hi Pau,
On Thu, Feb 01, 2018 at 12:18:11AM +0100, Pau Espin Pedrol wrote:
thanks for the explanation! However, it's still
not clear to me how to get
the decoded payload out of the receive statement. From
https://www.eclipse.org/forums/index.php/t/1089269/ I saw there's this
"@decoded" keyword you can use but I couldn't figure out how to really use
it in a proper way, and what exactly I would be getting with it.
The ETSI TTCN-3 language spec actually has plenty of useful examples.
From ETSI ES 201 873-1 V4.8.1, Section 22.2.2 Example
2:
MyPort.receive(MyType2:{header := ?, payload := decmatch mw_myTemplate}) -> value
(v_myVar := @decoded payload);
// The encoded payload field of the received message is decoded and matched with
// mw_myTemplate; if the matching is successful the decoded payload is stored in v_myVar.
I'm also wondering if several decmatch expressions
can be stacked in a
single statment, for instance image something like:
I have no idea, guess you'd have to try.
RSL.receive(tr_RSL_DATA_REQ(g_chan_nr, ?, decmatch
tr_RRM_RR_STATUS(foo,
bar, decmatch tr_ANOTHER_TEMPLATE)).
Linking it with first question, what I would be getting when using the
@decoded keyword in this case?
I guess you should raise that in the Eclipse Titan forum ;)
And extra question I asked myself while doing some
tests today: is there a
way to check if a template received through a function parameter matches a
specific template?
templates cannot match other templates. They can only match values
I tried with match() but from what I understood from
the
compilation errors, it seems match() actually checks a value vs a template,
correct.
Hm maybe just using "==" would work, I
didn't check it.
You can compare if two templates are equal. I would argue that this is not the
same as your question "a template matches a template". So using "=="
between
two identical templates should evaluate true (I don't think I ever tried). But
for sure, a more generic template wound not be equal to a more specific template,
even though there are values that could match both templates.
Last query: Did you find a good tutorial or well
documented examples for
beginners in some specific place?
I've so far been looking primarily at
* https://www.ttcn-3.org/files/TTCN3_P.pdf
* the above-mentioned ETSI core language spec for TTCN-3
* the Eclipse/Ericsson TITAN referenceguide.pdf "Programmers Guide"
which is part of
https://www.eclipse.org/downloads/download.php?file=/titan/TitanDocuments_6…
--
- Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/
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