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fix(RouteStepper): proper undo in case of failure 

Fixes #116
(hopefully)
This commit is contained in:
Ellen Emilia Anna Zscheile 2025-02-14 16:55:15 +01:00
parent bb86aaed2a
commit a7c8474153
1 changed files with 11 additions and 3 deletions
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14
src/router/route.rs
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@ -85,9 +85,17 @@ impl<'a, R: AccessRules> Step<Router<'a, R>, BandTermsegIndex> for RouteStepper
let target = self.astar.graph.destination(); let target = self.astar.graph.destination();
let mut strategy = RouterAstarStrategy::new(layout, &mut self.navcord, target); let mut strategy = RouterAstarStrategy::new(layout, &mut self.navcord, target);
let result = match self.astar.step(&mut strategy)? { let result = match self.astar.step(&mut strategy) {
ControlFlow::Continue(..) => Ok(ControlFlow::Continue(())), Ok(ControlFlow::Continue(..)) => Ok(ControlFlow::Continue(())),
ControlFlow::Break((_cost, _path, band)) => Ok(ControlFlow::Break(band)), Ok(ControlFlow::Break((_cost, _path, band))) => Ok(ControlFlow::Break(band)),
Err(e) => {
// NOTE(fogti): The 1 instead 0 is because the first element in the path
// is the source navvertex. See also: `NavcordStepper::new`.
for _ in 1..self.navcord.path.len() {
self.navcord.step_back(layout);
}
Err(e)
}
}; };
self.ghosts = strategy.probe_ghosts; self.ghosts = strategy.probe_ghosts;