Struct ExprRef 

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

A typed wrapper around ArenaIndex representing an expression to evaluate.

Expressions are S-expressions stored in the arena. Using a distinct type prevents accidentally passing an environment where an expression is expected.

Implementations

impl ExprRef

pub const fn index(self) -> ArenaIndex

Get the underlying ArenaIndex.

pub const fn new(idx: ArenaIndex) -> Self

Create an ExprRef from a raw ArenaIndex.

Trait Implementations

impl Clone for ExprRef

fn clone(&self) -> ExprRef

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ExprRef

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

Formats the value using the given formatter.

impl From<ArenaIndex> for ExprRef

fn from(idx: ArenaIndex) -> Self

Converts to this type from the input type.

impl From<ExprRef> for ArenaIndex

fn from(r: ExprRef) -> Self

Converts to this type from the input type.

impl PartialEq for ExprRef

fn eq(&self, other: &ExprRef) -> 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 ExprRef

impl Eq for ExprRef

impl StructuralPartialEq for ExprRef