1mod lexer;
2
3use lexer::Token;
4use logos::Logos;
5
6pub struct Triple<'a>(pub &'a [u8], pub &'a [u8], pub &'a [u8]);
7
8pub fn parse<'a>(input: &'a [u8]) -> Result<Vec<Triple<'a>>, ()> {
9 let tokens = Token::lexer(input);
10 let mut triples = Vec::new();
11 let mut counter: u8 = 0;
12 let mut subject: &[u8] = &[];
13 let mut predicate: &[u8] = &[];
14 for token in tokens {
15 let token = token.unwrap();
16 match (counter, token) {
17 (0, Token::Iri(bytes) | Token::BlankNode(bytes)) => {
18 subject = bytes;
19 }
20 (1, Token::Iri(bytes)) => {
21 predicate = bytes;
22 }
23 (2, Token::Literal(bytes) | Token::Iri(bytes)) => {
24 triples.push(Triple(subject, predicate, bytes))
25 }
26 _ => {
27 panic!()
28 }
29 }
30 counter = (counter + 1) % 3;
31 }
32 return Ok(triples);
33}