Struct Interner

pub struct Interner<H = DefaultHashBuilder>
where
    H: BuildHasher,
{ /* private fields */ }

Data structure that allows to resolve/intern strings.

See:

• Interner::get_or_intern to intern a new string.
• Interner::resolve to resolve already interned strings.

Implementations

impl<H> Interner<H>

where H: BuildHasher + Default,

pub fn new() -> Self

Creates a new empty Interner.

pub fn with_hasher(hasher: H) -> Self

Creates a new empty Interner with the given hasher.

pub fn with_capacity(capacity: usize) -> Self

Creates a new empty Interner with the given capacity.

pub fn with_capacity_and_hasher(capacity: usize, hasher: H) -> Self

Creates a new empty Interner with the given capacity and hasher.

pub fn len(&self) -> usize

Returns the number of symbols/strings interned by the interner.

pub fn is_empty(&self) -> bool

Returns true if the string interner has no interned strings/amount of symbols is 0.

pub fn get<T>(&self, string: T) -> Option<usize>

where T: AsRef<str>,

Returns the symbol for the given string if any.

pub fn get_or_intern<T>(&mut self, string: T) -> usize

where T: AsRef<str>,

Interns the given string and returns a corresponding symbol.

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

Interns the given 'static string and returns a corresponding symbol.

pub fn shrink_to_fit(&mut self)

Shrink backend capacity to fit the interned strings exactly.

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

Returns the string for the given symbol if any.

Trait Implementations

impl<H> Debug for Interner<H>

where H: BuildHasher + Debug,

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

Formats the value using the given formatter.

impl Default for Interner

fn default() -> Self

Returns the “default value” for a type.