Struct AstNodeId

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

A unique numerical identifier for a node in the AST. Identifiers start from 1.

To create a new AstNodeId, call Driver::make_node_id.

Implementations

impl AstNodeId

pub fn null() -> Self

Creates a null sentinel value for an AstNodeId.

It’s invalid for a node in the AST to have this value, except when temporarily breaking the invariant.

This function is used when moving a node out from the AST by temporarily replacing it with something else. That temporary replacement node has a null value, until it is replaced again or overwritten.

Trait Implementations

impl Clone for AstNodeId

fn clone(&self) -> AstNodeId

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AstNodeId

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

Formats the value using the given formatter.

impl Default for AstNodeId

fn default() -> AstNodeId

Returns the “default value” for a type.

impl Display for AstNodeId

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

Formats the value using the given formatter.

impl Hash for AstNodeId

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 AstNodeId

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl Copy for AstNodeId

impl Eq for AstNodeId

impl StructuralPartialEq for AstNodeId