Thread:Project:Support desk/Where to find language specific parserfunctions in the code of the parser ?

The wikicode of a french wikipage contains a "parser function" like the following:

which will be interpreted and showed as "27.1.1756".

Where can I find the code of this process, where I can see how this is interpreted ? I ask for this, bacuse I would like to see all "parser functions" for a specific language.

Can someone help me ? ( any PHP or where )

kind regards