Struct StrInterner

pub struct StrInterner<'a> { /* private fields */ }

The string interner. See the module level documentation for more.

Implementations

impl<'a> StrInterner<'a>

pub fn new() -> Self

Creates a new StrInterner.

pub fn intern(&self, arena: &'a Arena, value: &str) -> InternedStr<'a>

Interns a string or returns a reference an already interned string.

Example

let arena = rsjsonnet_lang::arena::Arena::new();
let interner = rsjsonnet_lang::interner::StrInterner::new();

let hello = interner.intern(&arena, "hello");
assert_eq!(hello.value(), "hello");

pub fn get_interned(&self, value: &str) -> Option<InternedStr<'a>>

Returns a reference to an already interned string if it exists.

Example

let arena = rsjsonnet_lang::arena::Arena::new();
let interner = rsjsonnet_lang::interner::StrInterner::new();

let hello1 = interner.intern(&arena, "hello");
assert_eq!(hello1.value(), "hello");

let hello2 = interner.get_interned("hello").unwrap();
assert_eq!(hello2.value(), "hello");

let world = interner.get_interned("world");
assert!(world.is_none()); // Not previously interned

Trait Implementations

impl Default for StrInterner<'_>

fn default() -> Self

Returns the “default value” for a type.