Struct Callbacks 

pub struct Callbacks { /* private fields */ }

A set of registered callbacks and parsers, keyed by name or by CallbackRef identity (inline source / file path). Callback and parser keys live in separate namespaces — the same name can name a callback for one rule and a parser for another.

Implementations

impl Callbacks

pub fn new() -> Self

Creates an empty registry.

pub fn register( &mut self, name: impl Into<String>, callback: Arc<dyn MatchCallback>, )

Registers a callback under a plain name (what a rule’s callback: name refers to).

pub fn register_allow(&mut self, name: impl Into<String>)

Registers a convenience callback that allows every match of the named rule.

pub fn register_ref( &mut self, reference: &CallbackRef, callback: Arc<dyn MatchCallback>, )

Registers the callback implementation for an inline/file reference — the loader’s entry point (e.g. declint-lua).

pub fn register_parser( &mut self, name: impl Into<String>, parser: Arc<dyn MatchParser>, )

Registers a parser under a plain name (what a rule’s parser: name refers to).

pub fn register_parser_ref( &mut self, reference: &CallbackRef, parser: Arc<dyn MatchParser>, )

Registers the parser implementation for an inline/file reference.

pub fn resolve(&self, reference: &CallbackRef) -> Option<Arc<dyn MatchCallback>>

Looks up the callback for a rule’s reference.

pub fn resolve_parser( &self, reference: &CallbackRef, ) -> Option<Arc<dyn MatchParser>>

Looks up the parser for a rule’s reference.

pub fn is_empty(&self) -> bool

Whether anything (callback or parser) is registered at all.

Trait Implementations

impl Debug for Callbacks

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

Formats the value using the given formatter.

impl Default for Callbacks

fn default() -> Self

Returns the “default value” for a type.