Struct move_model::symbol::SymbolPool

pub struct SymbolPool { /* private fields */ }

A pool of symbols. Allows to lookup a symbol by a string representation, and discover the string representation of an existing symbol. This struct does not need be mutable for operations on it, which is important so references to it can be freely passed around.

Implementations

impl SymbolPool

pub fn new() -> SymbolPool

Creates a new SymbolPool.

pub fn make(&self, s: &str) -> Symbol

Looks up a symbol by its string representation. If a symbol with this representation already exists, it will be returned, otherwise a new one will be created in the pool. The implementation uses internally a RefCell for storing symbols, so the pool does not need to be mutable.

pub fn string(&self, sym: Symbol) -> Rc<String>

Returns the string representation of this symbol, as an rc’ed string to avoid copies. If the past symbol was not created from this pool, a runtime error may happen (or a wrong string will be returned).

Trait Implementations

impl Debug for SymbolPool

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

Formats the value using the given formatter.

impl Default for SymbolPool

fn default() -> Self

Returns the “default value” for a type.