cargo_show_asm/
cached_lines.rs

1use line_span::LineSpans;
2use std::ops::{Index, Range};
3
4pub struct CachedLines {
5    pub content: String,
6    pub splits: Vec<Range<usize>>,
7}
8
9impl CachedLines {
10    #[must_use]
11    pub fn without_ending(content: String) -> Self {
12        let splits = content.line_spans().map(|s| s.range()).collect::<Vec<_>>();
13        Self { content, splits }
14    }
15
16    #[must_use]
17    pub fn iter(&self) -> LineIter<'_> {
18        LineIter {
19            payload: self,
20            current: 0,
21        }
22    }
23    #[must_use]
24    pub fn get(&self, index: usize) -> Option<&str> {
25        let range = self.splits.get(index)?.clone();
26        Some(&self.content[range])
27    }
28}
29
30impl Index<usize> for CachedLines {
31    type Output = str;
32
33    fn index(&self, index: usize) -> &Self::Output {
34        &self.content[self.splits[index].clone()]
35    }
36}
37
38pub struct LineIter<'a> {
39    payload: &'a CachedLines,
40    current: usize,
41}
42
43impl<'a> IntoIterator for &'a CachedLines {
44    type Item = &'a str;
45
46    type IntoIter = LineIter<'a>;
47
48    fn into_iter(self) -> Self::IntoIter {
49        self.iter()
50    }
51}
52
53impl<'a> Iterator for LineIter<'a> {
54    type Item = &'a str;
55
56    fn next(&mut self) -> Option<Self::Item> {
57        self.current += 1;
58        self.payload.get(self.current - 1)
59    }
60}
cargo_show_asm/cached_lines.rs

cargo_show_asm/
cached_lines.rs
