Struct PlanId 

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

The identity of a registered parser plan.

NonZeroU32 on purpose: a 0 meaning “parser analysis failed” would be indistinguishable from the first successfully registered plan. No u32 means “no plan”, so that encoding is unwritable — a failed analysis lowers to an error expression instead.

Implementations

impl PlanId

pub fn get(self) -> u32

The raw id, for embedding as a MIR immediate.

pub fn from_raw(raw: u32) -> Option<PlanId>

Recover a PlanId from a raw value, rejecting 0.

The runtime calls this on the integer it reads back out of a boxed Int argument: a value that never named a plan must become a parse fault, not an index into the arena.

Trait Implementations

impl Clone for PlanId

fn clone(&self) -> PlanId

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for PlanId

impl Debug for PlanId

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

Formats the value using the given formatter.

impl Eq for PlanId

impl Hash for PlanId

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for PlanId

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for PlanId