blob: 81a5e06a9c86468dec28011f611202d94ca80cd6 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
//! Code for applying replacement templates for matches that have previously been found.
use crate::matching::Var;
use crate::parsing::PatternElement;
use crate::{Match, SsrMatches};
use ra_syntax::ast::AstToken;
use ra_syntax::TextSize;
use ra_text_edit::TextEdit;
/// Returns a text edit that will replace each match in `matches` with its corresponding replacement
/// template. Placeholders in the template will have been substituted with whatever they matched to
/// in the original code.
pub(crate) fn matches_to_edit(matches: &SsrMatches) -> TextEdit {
matches_to_edit_at_offset(matches, 0.into())
}
fn matches_to_edit_at_offset(matches: &SsrMatches, relative_start: TextSize) -> TextEdit {
let mut edit_builder = ra_text_edit::TextEditBuilder::default();
for m in &matches.matches {
edit_builder.replace(m.range.checked_sub(relative_start).unwrap(), render_replace(m));
}
edit_builder.finish()
}
fn render_replace(match_info: &Match) -> String {
let mut out = String::new();
for r in &match_info.template.tokens {
match r {
PatternElement::Token(t) => out.push_str(t.text.as_str()),
PatternElement::Placeholder(p) => {
if let Some(placeholder_value) =
match_info.placeholder_values.get(&Var(p.ident.to_string()))
{
let range = &placeholder_value.range.range;
let mut matched_text = placeholder_value.node.text().to_string();
let edit =
matches_to_edit_at_offset(&placeholder_value.inner_matches, range.start());
edit.apply(&mut matched_text);
out.push_str(&matched_text);
} else {
// We validated that all placeholder references were valid before we
// started, so this shouldn't happen.
panic!(
"Internal error: replacement referenced unknown placeholder {}",
p.ident
);
}
}
}
}
for comment in &match_info.ignored_comments {
out.push_str(&comment.syntax().to_string());
}
out
}
|
