Struct boa_interner::Interner

pub struct Interner { /* private fields */ }

The string interner for Boa.

Implementations

impl Interner

pub fn new() -> Self

Creates a new Interner.

pub fn with_capacity(capacity: usize) -> Self

Creates a new Interner with the specified capacity.

pub fn len(&self) -> usize

Returns the number of strings interned by the interner.

pub fn is_empty(&self) -> bool

Returns true if the Interner contains no interned strings.

pub fn get<T>(&self, string: T) -> Option<Sym>where
    T: AsRef<str>,

Returns the symbol for the given string if any.

Can be used to query if a string has already been interned without interning.

pub fn get_or_intern<T>(&mut self, string: T) -> Symwhere
    T: AsRef<str>,

Interns the given string.

Returns a symbol for resolution into the original string.

Panics

If the interner already interns the maximum number of strings possible by the chosen symbol type.

pub fn get_or_intern_static(&mut self, string: &'static str) -> Sym

Interns the given 'static string.

Returns a symbol for resolution into the original string.

Note

This is more efficient than Interner::get_or_intern, since it avoids storing string inside the Interner.

Panics

If the interner already interns the maximum number of strings possible by the chosen symbol type.

pub fn resolve(&self, symbol: Sym) -> Option<&str>

Returns the string for the given symbol if any.

pub fn resolve_expect(&self, symbol: Sym) -> &str

Returns the string for the given symbol.

Panics

If the interner cannot resolve the given symbol.

Trait Implementations

impl Debug for Interner

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

Formats the value using the given formatter.

impl Default for Interner

fn default() -> Interner

Returns the “default value” for a type.