Struct SimModeScan 

pub struct SimModeScan(/* private fields */);

SSCN — the simulation-mode scan field (DBF_MENU, menu(menuScan)).

The same domain as SCAN — it is the same menu — so it is the same type, and an out-of-menu index is carried, not erased. Its dbd default is the out-of-range 65535 (field(SSCN,DBF_MENU){ menu(menuScan) initial("65535") }, identical across all 21 records that carry SSCN), which C reads as “not set — keep scanning at SCAN while in simulation mode”.

That sentinel is 65535 and only 65535. Both recGbl helpers test it literally —

/* recGbl.c: recGblSaveSimm and recGblCheckSimm both open with */
if (*psscn == USHRT_MAX) return;

— so an SSCN of, say, 10 is NOT “unset”: C performs the swap, lands the illegal 10 in SCAN, and scanAdd then leaves the record in no scan list. Treating every illegal index as the sentinel would be a different behaviour from C, so the distinction is kept.

Implementations

impl SimModeScan

pub const DO_NOT_USE: u16 = 65535

C’s dbd default, and the one index the recGbl simulation helpers bail on.

pub fn from_u16(v: u16) -> Self

pub fn from_scan(s: ScanType) -> Self

pub fn to_u16(self) -> u16

The DBR_ENUM/wire index — whatever was written, sentinel included.

pub fn is_unset(self) -> bool

C’s *psscn == USHRT_MAX test.

pub fn scan(self) -> Option<ScanType>

The scan SSCN swaps SCAN to. None only for the unset sentinel — an illegal-but-not-sentinel index still swaps, exactly as it does in C.

Trait Implementations

impl Clone for SimModeScan

fn clone(&self) -> SimModeScan

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for SimModeScan

impl Debug for SimModeScan

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for SimModeScan

fn default() -> Self

Returns the “default value” for a type.

impl Display for SimModeScan

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for SimModeScan

impl PartialEq for SimModeScan

fn eq(&self, other: &SimModeScan) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for SimModeScan