osmose-backend
osmose-backend copied to clipboard
mapcss functionExpression with booleanExpression arguments fails
I was curious to see if Osmose could parse the monstrous validator rules of ~https://josm.openstreetmap.de/ticket/22822#comment:12~ https://josm.openstreetmap.de/wiki/Rules/Runways It turns out, it can't 😢.
Reason: functionExpression
expects a valueExpression
inside, but here it receives a booleanExpression
Simplified the issue can be brought back to this minimal test case: node[eval(5 >= 5)]
(however see also below)
Hence, crashing with the error: no viable alternative at input
Since this doesn't affect active rules, just filing it 'for reference' for now.
For actual support, we also need to implement the boolean ? value : value
method, e.g.
node[x][y] {
throwWarning: "test";
fixAdd: tag("x") > tag("y") ? "z=x" : "z=y";
}