code wiki / _hdl_build / _pe_previewenv.nx
_pe_previewenv.nx source
↩ module page · 23 lines · 711 B
1// AUTHORED BY THE NISHI BUILDER (pattern: STATE_MACHINE) -- baked transition walk, no Claude logic
2import "nx_syscalls.nx"
3func _pe_previewenv_step(s: i64, e: i64) -> i64 {
4 if s < 0 { return 0 - 1 }
5 if s >= 4 { return 0 - 1 }
6 if e < 0 { return 0 - 1 }
7 if e >= 3 { return 0 - 1 }
8 if s == 0 { if e == 0 { return 1 } }
9 if s == 1 { if e == 1 { return 2 } }
10 if s == 2 { if e == 2 { return 3 } }
11 if s == 3 { if e == 0 { return 1 } }
12 return 0 - 1
13}
14func _pe_previewenv_run(ev: *i64, n: i64, s0: i64) -> i64 {
15 var s: i64 = s0
16 var i: i64 = 0
17 while i < n {
18 s = _pe_previewenv_step(s, ev[i])
19 if s < 0 { return 0 - 1 }
20 i = i + 1
21 }
22 return s
23}