Struct chalk_engine::stack::StackIndex

pub(crate) struct StackIndex {
    value: usize,
}

The StackIndex identifies the position of a table’s goal in the stack of goals that are actively being processed. Note that once a table is completely evaluated, it may be popped from the stack, and hence no longer have a stack index.

Fields

value: usize

Implementations

impl StackIndex

pub(crate) fn get_and_increment(&mut self) -> Self

pub(crate) fn increment(&mut self)

pub fn iterate_range(range: Range<Self>) -> impl Iterator<Item = StackIndex>

Trait Implementations

impl Clone for StackIndex

fn clone(&self) -> StackIndex

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for StackIndex

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

Formats the value using the given formatter.

impl From<usize> for StackIndex

fn from(value: usize) -> Self

Converts to this type from the input type.

impl Hash for StackIndex

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,

Feeds a slice of this type into the given Hasher.

impl<I: Interner> Index<StackIndex> for Stack<I>

type Output = StackEntry<I>

The returned type after indexing.

fn index(&self, index: StackIndex) -> &StackEntry<I>

Performs the indexing (container[index]) operation.

impl<I: Interner> IndexMut<StackIndex> for Stack<I>

fn index_mut(&mut self, index: StackIndex) -> &mut StackEntry<I>

Performs the mutable indexing (container[index]) operation.

impl Ord for StackIndex

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

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

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

Restrict a value to a certain interval.

impl PartialEq<StackIndex> for StackIndex

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd<StackIndex> for StackIndex

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

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl Copy for StackIndex

impl Eq for StackIndex

impl StructuralEq for StackIndex

impl StructuralPartialEq for StackIndex