Hello
I was wondering what was the best way to parse messages with
extensions in C++. In the documentation I found this sentence:
"Note that you can use the ListFields reflection method (in C++, Java,
and Python) to get a list of all fields present in the message,
including extensions. You might use this as part of a scheme for
registering handlers for diverse message types."
However no further information is given and I am a bit puzzled on how
to use this reflection interface. For now I just check every single
expected extension using the HasExtension but I'd like something more
generic and cleaner which does not explode whenever more message types
are added:
if(msg.HasExtension(RobotDataProtocol::acknowledge_ext)) {
...
} else if(msg.HasExtension(RobotDataProtocol::assistance_ext)) {
...
} else if(msg.HasExtension(RobotDataProtocol::dynamicWindow_ext)) {
... and so on
Should be something like (with parsers a map with a parser for each
known extension)
Parser p = parsers.get(msg.extensionType());
if(p != null)
p.parse(msg);
Any other more generic solution are also highly appreciated!
Kind regards
Johan
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