Struct VarStore 

pub struct VarStore<V> { /* private fields */ }

Variable storage for XPath evaluation.

Stores variable values indexed by VarSlotId. Size is determined by NameBinder::len() after binding.

Implementations

impl<V> VarStore<V>

pub fn new(size: usize) -> Self

Create a new variable store with the given size.

The size should be NameBinder::len() after binding.

pub fn get(&self, slot: VarSlotId) -> Option<&V>

Get a variable value by slot ID.

pub fn set(&mut self, slot: VarSlotId, value: V)

Set a variable value.

pub fn clear_slot(&mut self, slot: VarSlotId)

Clear a variable slot.

pub fn clear(&mut self)

Clear all variable values.

pub fn len(&self) -> usize

Get the number of slots.

pub fn is_empty(&self) -> bool

Check if the store is empty.

Trait Implementations

impl<V: Clone> Clone for VarStore<V>

fn clone(&self) -> VarStore<V>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<V: Debug> Debug for VarStore<V>

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

Formats the value using the given formatter.

impl<V> Default for VarStore<V>

fn default() -> Self

Returns the “default value” for a type.