atruea = parse("3 + 4")
ase
srt_equal(eval(a), 7)

assert_equal(1, a.children.size());
assert_equal("3 nction does not have a parse tree", fun() { `+`.get_parse_tree(); } );

auto& parsetree = my_fun.get_parse_tree();

assert_equal(0, eval(parsetree));

print(parsetree.text());
