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authorAkshay <[email protected]>2021-10-25 17:38:52 +0100
committerAkshay <[email protected]>2021-10-25 17:38:52 +0100
commit5f0a1e67c64082c848418daa2b51020eb42c5c12 (patch)
tree1d6d7db9ee5532e76d23b9f509a8299d0d34dc52 /bin/src/fix/single.rs
parent781c42cc9ce2e6a3f1024ea1f4e3f071cc8f2dd4 (diff)
rework cli, use subcommands instead
Diffstat (limited to 'bin/src/fix/single.rs')
-rw-r--r--bin/src/fix/single.rs59
1 files changed, 59 insertions, 0 deletions
diff --git a/bin/src/fix/single.rs b/bin/src/fix/single.rs
new file mode 100644
index 0000000..d430693
--- /dev/null
+++ b/bin/src/fix/single.rs
@@ -0,0 +1,59 @@
1use std::{borrow::Cow, convert::TryFrom};
2
3use lib::{Report, LINTS};
4use rnix::{TextRange, TextSize};
5
6use crate::err::SingleFixErr;
7use crate::fix::Source;
8
9pub struct SingleFixResult<'δ> {
10 pub src: Source<'δ>,
11}
12
13fn pos_to_byte(line: usize, col: usize, src: &str) -> Result<TextSize, SingleFixErr> {
14 let mut byte: TextSize = TextSize::of("");
15 for (_, l) in src.lines().enumerate().take_while(|(i, _)| i <= &line) {
16 byte += TextSize::of(l);
17 }
18 byte += TextSize::try_from(col).map_err(|_| SingleFixErr::Conversion(col))?;
19
20 if usize::from(byte) >= src.len() {
21 Err(SingleFixErr::OutOfBounds(line, col))
22 } else {
23 Ok(byte)
24 }
25}
26
27fn find(offset: TextSize, src: &str) -> Result<Report, SingleFixErr> {
28 // we don't really need the source to form a completely parsed tree
29 let parsed = rnix::parse(src);
30
31 let elem_at = parsed
32 .node()
33 .child_or_token_at_range(TextRange::empty(offset))
34 .ok_or(SingleFixErr::NoOp)?;
35
36 LINTS
37 .get(&elem_at.kind())
38 .map(|rules| {
39 rules
40 .iter()
41 .filter_map(|rule| rule.validate(&elem_at))
42 .filter(|report| report.total_suggestion_range().is_some())
43 .next()
44 })
45 .flatten()
46 .ok_or(SingleFixErr::NoOp)
47}
48
49pub fn single(line: usize, col: usize, src: &str) -> Result<SingleFixResult, SingleFixErr> {
50 let mut src = Cow::from(src);
51 let offset = pos_to_byte(line, col, &*src)?;
52 let report = find(offset, &*src)?;
53
54 report.apply(src.to_mut());
55
56 Ok(SingleFixResult {
57 src
58 })
59}