Trait Renamer

pub trait Renamer: Send + Sync {
    type Target: RenamedVariable;

    const RESET_N: bool;
    const MANGLE: bool;

    // Required method
    fn new_name_for(&self, orig: &(Atom, SyntaxContext), n: &mut usize) -> Atom;

    // Provided methods
    fn get_cached(
        &self,
    ) -> Option<Cow<'_, HashMap<(Atom, SyntaxContext), Self::Target, FxBuildHasher>>> { ... }
    fn store_cache(
        &mut self,
        _update: &HashMap<(Atom, SyntaxContext), Self::Target, FxBuildHasher>,
    ) { ... }
    fn unresolved_symbols(&self) -> Vec<Atom> { ... }
    fn preserve_name(&self, _orig: &(Atom, SyntaxContext)) -> bool { ... }
}

Available on crate feature __ecma and (crate features __ecma_transforms or __testing_transform) only.

Required Associated Constants

const RESET_N: bool

Should reset n to 0 for each identifier?

const MANGLE: bool

It should be true if you expect lots of collisions

Required Associated Types

type Target: RenamedVariable

See the RenamedVariable documentation, this type determines whether impls can be used with renamer or renamer_keep_contexts .

Required Methods

fn new_name_for(&self, orig: &(Atom, SyntaxContext), n: &mut usize) -> Atom

Should increment n.

Provided Methods

fn get_cached( &self, ) -> Option<Cow<'_, HashMap<(Atom, SyntaxContext), Self::Target, FxBuildHasher>>>

fn store_cache( &mut self, _update: &HashMap<(Atom, SyntaxContext), Self::Target, FxBuildHasher>, )

fn unresolved_symbols(&self) -> Vec<Atom>

fn preserve_name(&self, _orig: &(Atom, SyntaxContext)) -> bool

Return true if the identifier should be preserved.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors