Struct TokenValFunc 

pub struct TokenValFunc { /* private fields */ }

Lazy token value callback, evaluated only when a parser action asks for the token’s semantic value. This is the Rust counterpart of the canonical TokenValFunc (rule, context) => value extension point.

Implementations

impl TokenValFunc

pub fn new( callback: impl Fn(&mut Rule, &mut Context) -> Value + Send + Sync + 'static, ) -> Self

pub fn call(&self, rule: &mut Rule, context: &mut Context) -> Value

Trait Implementations

impl Clone for TokenValFunc

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TokenValFunc

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

Formats the value using the given formatter.

impl Eq for TokenValFunc

impl PartialEq for TokenValFunc

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

Equality operator ==.

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

Inequality operator !=.