MetaModelica implementation doesn't pattern-match in statements

[Martin Sjölund]

Sample code below. The compiler also pattern-matches with constants and underscores, so these need to be implemented using the pattern matching. For equations, this is done at the same time as the translation from equations to algorithms; this function could be made simpler and everything working for algorithm statements instead. To implement this match expressions probably need to be DAE.MATCHEXP in one step; no VALUEBLOCK.

{{{package P

function f1

input Integer i;
output Integer o1;
output Integer o2;

algorithm

(o1,o2) := f2(i);

end f1;

function f2

input Integer i;
output tuple<Integer,Intger> o;

algorithm

o := (i,2*i);

end f2;

end P;}}}

[Martin Sjölund]

Fixed, with testcase testcase meta/AlgPatternm.mos