Tokenizer-lib

Tokenization utilities for building parsers in Rust

Examples

Static token channel:

let mut stc = StaticTokenChannel::new();
stc.push(Token(12, Span(0, 2)));
stc.push(Token(32, Span(2, 4)));
stc.push(Token(52, Span(4, 8)));
assert_eq!(stc.next().unwrap(), Token(12, Span(0, 2)));
assert_eq!(stc.next().unwrap(), Token(32, Span(2, 4)));
assert_eq!(stc.next().unwrap(), Token(52, Span(4, 8)));
assert_eq!(stc.next(), None);

(Multi-thread safe) Streamed token channel:

let (mut sender, mut reader) = StreamedTokenChannel::new();
std::thread::spawn(move || {
    sender.push(Token(12, Span(0, 2)));
    sender.push(Token(32, Span(2, 4)));
    sender.push(Token(52, Span(4, 8)));
});

assert_eq!(reader.next().unwrap(), Token(12, Span(0, 2)));
assert_eq!(reader.next().unwrap(), Token(32, Span(2, 4)));
assert_eq!(reader.next().unwrap(), Token(52, Span(4, 8)));
assert_eq!(reader.next(), None);

Provides utilities such as peek and scan for lookahead. Also expect_next for expecting a token value.