jsonist/tokenizer/
indexed_characters.rs

1#[derive(Copy, Clone, Debug)]
2pub struct IndexedCharacters<'a> {
3    characters: &'a Vec<char>,
4    index: usize,
5}
6
7impl<'a> IndexedCharacters<'a> {
8    pub fn new(characters: &'a Vec<char>) -> IndexedCharacters<'a> {
9        IndexedCharacters {
10            characters,
11            index: 0,
12        }
13    }
14
15    pub fn progress(&self) -> IndexedCharacters<'a> {
16        self.jump(1)
17    }
18
19    pub fn previous_character(self) -> Option<&'a char> {
20        self.characters.get(self.index - 1)
21    }
22
23    pub fn current_character(self) -> Option<&'a char> {
24        self.characters.get(self.index)
25    }
26
27    pub fn get_index(self) -> usize {
28        self.index
29    }
30
31    pub fn jump(&self, jump: usize) -> IndexedCharacters<'a> {
32        IndexedCharacters {
33            characters: &self.characters,
34            index: self.index + jump,
35        }
36    }
37}

jsonist/tokenizer/indexed_characters.rs

jsonist/tokenizer/
indexed_characters.rs