Struct MetaIdx 

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

Index into crate::model::ParsedTree::meta_arena — a crate::model::Tree::meta. Hand-written rather than [define_idx]: it needs a NONE sentinel (mirrors crate::model::Action::NONE / crate::model::Handle’s packed-word sentinels), so it does not fit the plain-newtype macro shape.

Implementations

impl MetaIdx

pub const NONE: MetaIdx

No meta computed (off-propagate_positions / unstamped) — was NO_META: u32 = u32::MAX.

pub fn is_none(self) -> bool

pub fn index(self) -> usize

The underlying index as a usize. Only meaningful when !is_none().

Trait Implementations

impl Clone for MetaIdx

fn clone(&self) -> MetaIdx

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for MetaIdx

impl Debug for MetaIdx

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

Formats the value using the given formatter.

impl Eq for MetaIdx

impl From<MetaIdx> for usize

fn from(v: MetaIdx) -> usize

Converts to this type from the input type.

impl From<usize> for MetaIdx

fn from(v: usize) -> Self

Converts to this type from the input type.

impl Hash for MetaIdx

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 Ord for MetaIdx

fn cmp(&self, other: &MetaIdx) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for MetaIdx

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for MetaIdx

fn partial_cmp(&self, other: &MetaIdx) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for MetaIdx