Crate ry_interner

324 lines of Rust code that implement string internering for Ry programming language compiler.

The crate caches strings and associates them with unique symbols. These allows constant time comparisons and look-ups to underlying interned strings.

Examples:

Internings:

use ry_interner::Interner;

let mut interner = Interner::default();
let symbol0 = interner.get_or_intern("A");
let symbol1 = interner.get_or_intern("B");
let symbol2 = interner.get_or_intern("C");
let symbol3 = interner.get_or_intern("A");

assert_ne!(symbol0, symbol1);
assert_ne!(symbol0, symbol2);
assert_ne!(symbol1, symbol2);
assert_eq!(symbol0, symbol3);

Resolving symbols:

use ry_interner::Interner;

let mut interner = Interner::default();
let symbol0 = interner.get_or_intern("A");
let symbol1 = interner.get_or_intern("B");

assert_eq!(interner.resolve(0), Some("A"));
assert_eq!(interner.resolve(1), Some("B"));
assert_eq!(interner.resolve(2), None);

Structs

• Backend
  Data structures that organizes interned strings.
• Interner
  Data structure that allows to resolve/intern strings.
• Span
  Represents a location of an interned string inside the Backend::buffer buffer.