Rework `Vt` into `Engine`

- Moves as much data out of the `Vm`
- Removes duplication with call_vm and call_vt flavours
- Uses tracked chain instead of fixed int for determining max nesting depth
- This means that nesting checks now generalizes to layout and realization, to detect crashing show rules and overly nested layouts

2 files changed, 2 insertions, 2 deletions

diff --git a/tests/src/benches.rs b/tests/src/benches.rs
index 16122bd4..5ec0be61 100644
--- a/tests/src/benches.rs
+++ b/tests/src/benches.rs
@@ -57,7 +57,7 @@ fn bench_edit(iai: &mut Iai) {
 
 fn bench_eval(iai: &mut Iai) {
     let world = BenchWorld::new();
-    let route = typst::eval::Route::default();
+    let route = typst::engine::Route::default();
     let mut tracer = typst::eval::Tracer::new();
     iai.run(|| {
         typst::eval::eval(world.track(), route.track(), tracer.track_mut(), &world.source)
diff --git a/tests/src/tests.rs b/tests/src/tests.rs
index 0a936a8d..d801209e 100644
--- a/tests/src/tests.rs
+++ b/tests/src/tests.rs
@@ -535,7 +535,7 @@ fn test_part(
 
     if world.print.model {
         let world = (world as &dyn World).track();
-        let route = typst::eval::Route::default();
+        let route = typst::engine::Route::default();
         let mut tracer = typst::eval::Tracer::new();
 
         let module =