Struct Session 

pub struct Session {
    pub provider: Option<String>,
    pub model: Option<String>,
}

The last-active selections read from the [session] table.

Fields

provider: Option<String>

Last [[backends]] name chosen via /backends <name>.

model: Option<String>

Last model override chosen via /model <name> (the NEWT_DGX_MODEL axis).

Implementations

impl Session

pub fn from_doc(doc: &Table) -> Self

Extract [session] selections from a parsed settings document. Tolerant of a missing table, missing keys, non-string values, and empty strings (all read as None) — a malformed file must never break startup.

pub fn is_empty(&self) -> bool

True when nothing is recorded (skip the whole restore/write dance).

pub fn restore( &self, current_provider: Option<&str>, model_pinned: bool, known_backend: impl Fn(&str) -> bool, ) -> Restore

Decide what to restore. current_provider is the value NEWT_PROVIDER already holds (an explicit env var or a --loadout’s provider) — None if unset; a pinned provider is left untouched. model_pinned is whether NEWT_DGX_MODEL is already set. known_backend guards the recorded provider so a stale name (backend since removed from config) is dropped rather than producing a dangling pin. Pure — the caller owns the env and config lookups, keeping this fully unit-testable.

A recorded model belongs to the provider it was chosen under (self.provider), so it is restored only when that provider is the one that will actually be active. This keeps a model picked for one backend from bleeding onto a different backend selected by env or a --loadout — matching the in-app rule that picking a provider clears the model override. (When both are None the model was chosen on the default backend, which is also what’s active, so a bare /model choice still sticks.)

Trait Implementations

impl Clone for Session

fn clone(&self) -> Session

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Session

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

Formats the value using the given formatter.

impl Default for Session

fn default() -> Session

Returns the “default value” for a type.

impl Eq for Session

impl PartialEq for Session

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Session