lean4-htt/tests/lean/run/basic_monitor1.lean

12 lines
291 B
Text

meta def basic_monitor : vm_monitor nat :=
{ init := 0, step := λ s, return (trace ("step " ++ s^.to_string) (λ u, s+1)) >> failure }
run_command vm_monitor.register `basic_monitor
set_option debugger true
def f : nat → nat
| 0 := 0
| (a+1) := f a
vm_eval trace "a" (λ u, f 4)