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-rw-r--r--crates/ra_text_edit/src/lib.rs131
-rw-r--r--crates/ra_text_edit/src/text_edit.rs102
2 files changed, 114 insertions, 119 deletions
diff --git a/crates/ra_text_edit/src/lib.rs b/crates/ra_text_edit/src/lib.rs
index e656260c7..c41bf324b 100644
--- a/crates/ra_text_edit/src/lib.rs
+++ b/crates/ra_text_edit/src/lib.rs
@@ -1,30 +1,40 @@
1//! FIXME: write short doc here 1//! Representation of a `TextEdit`.
2 2//!
3mod text_edit; 3//! `rust-analyzer` never mutates text itself and only sends diffs to clients,
4//! so `TextEdit` is the ultimate representation of the work done by
5//! rust-analyzer.
4 6
5use text_size::{TextRange, TextSize}; 7use text_size::{TextRange, TextSize};
6 8
7pub use crate::text_edit::{TextEdit, TextEditBuilder}; 9/// `InsertDelete` -- a single "atomic" change to text
8 10///
9/// Must not overlap with other `AtomTextEdit`s 11/// Must not overlap with other `InDel`s
10#[derive(Debug, Clone)] 12#[derive(Debug, Clone)]
11pub struct AtomTextEdit { 13pub struct Indel {
14 pub insert: String,
12 /// Refers to offsets in the original text 15 /// Refers to offsets in the original text
13 pub delete: TextRange, 16 pub delete: TextRange,
14 pub insert: String,
15} 17}
16 18
17impl AtomTextEdit { 19#[derive(Debug, Clone)]
18 pub fn replace(range: TextRange, replace_with: String) -> AtomTextEdit { 20pub struct TextEdit {
19 AtomTextEdit { delete: range, insert: replace_with } 21 indels: Vec<Indel>,
20 } 22}
21 23
22 pub fn delete(range: TextRange) -> AtomTextEdit { 24#[derive(Debug, Default)]
23 AtomTextEdit::replace(range, String::new()) 25pub struct TextEditBuilder {
24 } 26 indels: Vec<Indel>,
27}
25 28
26 pub fn insert(offset: TextSize, text: String) -> AtomTextEdit { 29impl Indel {
27 AtomTextEdit::replace(TextRange::empty(offset), text) 30 pub fn insert(offset: TextSize, text: String) -> Indel {
31 Indel::replace(TextRange::empty(offset), text)
32 }
33 pub fn delete(range: TextRange) -> Indel {
34 Indel::replace(range, String::new())
35 }
36 pub fn replace(range: TextRange, replace_with: String) -> Indel {
37 Indel { delete: range, insert: replace_with }
28 } 38 }
29 39
30 pub fn apply(&self, mut text: String) -> String { 40 pub fn apply(&self, mut text: String) -> String {
@@ -34,3 +44,90 @@ impl AtomTextEdit {
34 text 44 text
35 } 45 }
36} 46}
47
48impl TextEdit {
49 pub fn insert(offset: TextSize, text: String) -> TextEdit {
50 let mut builder = TextEditBuilder::default();
51 builder.insert(offset, text);
52 builder.finish()
53 }
54
55 pub fn delete(range: TextRange) -> TextEdit {
56 let mut builder = TextEditBuilder::default();
57 builder.delete(range);
58 builder.finish()
59 }
60
61 pub fn replace(range: TextRange, replace_with: String) -> TextEdit {
62 let mut builder = TextEditBuilder::default();
63 builder.replace(range, replace_with);
64 builder.finish()
65 }
66
67 pub(crate) fn from_indels(mut indels: Vec<Indel>) -> TextEdit {
68 indels.sort_by_key(|a| (a.delete.start(), a.delete.end()));
69 for (a1, a2) in indels.iter().zip(indels.iter().skip(1)) {
70 assert!(a1.delete.end() <= a2.delete.start())
71 }
72 TextEdit { indels }
73 }
74
75 pub fn as_indels(&self) -> &[Indel] {
76 &self.indels
77 }
78
79 pub fn apply(&self, text: &str) -> String {
80 let mut total_len = TextSize::of(text);
81 for indel in self.indels.iter() {
82 total_len += TextSize::of(&indel.insert);
83 total_len -= indel.delete.end() - indel.delete.start();
84 }
85 let mut buf = String::with_capacity(total_len.into());
86 let mut prev = 0;
87 for indel in self.indels.iter() {
88 let start: usize = indel.delete.start().into();
89 let end: usize = indel.delete.end().into();
90 if start > prev {
91 buf.push_str(&text[prev..start]);
92 }
93 buf.push_str(&indel.insert);
94 prev = end;
95 }
96 buf.push_str(&text[prev..text.len()]);
97 assert_eq!(TextSize::of(&buf), total_len);
98 buf
99 }
100
101 pub fn apply_to_offset(&self, offset: TextSize) -> Option<TextSize> {
102 let mut res = offset;
103 for indel in self.indels.iter() {
104 if indel.delete.start() >= offset {
105 break;
106 }
107 if offset < indel.delete.end() {
108 return None;
109 }
110 res += TextSize::of(&indel.insert);
111 res -= indel.delete.len();
112 }
113 Some(res)
114 }
115}
116
117impl TextEditBuilder {
118 pub fn replace(&mut self, range: TextRange, replace_with: String) {
119 self.indels.push(Indel::replace(range, replace_with))
120 }
121 pub fn delete(&mut self, range: TextRange) {
122 self.indels.push(Indel::delete(range))
123 }
124 pub fn insert(&mut self, offset: TextSize, text: String) {
125 self.indels.push(Indel::insert(offset, text))
126 }
127 pub fn finish(self) -> TextEdit {
128 TextEdit::from_indels(self.indels)
129 }
130 pub fn invalidates_offset(&self, offset: TextSize) -> bool {
131 self.indels.iter().any(|indel| indel.delete.contains_inclusive(offset))
132 }
133}
diff --git a/crates/ra_text_edit/src/text_edit.rs b/crates/ra_text_edit/src/text_edit.rs
deleted file mode 100644
index eabab4b4d..000000000
--- a/crates/ra_text_edit/src/text_edit.rs
+++ /dev/null
@@ -1,102 +0,0 @@
1//! FIXME: write short doc here
2
3use crate::AtomTextEdit;
4
5use text_size::{TextRange, TextSize};
6
7#[derive(Debug, Clone)]
8pub struct TextEdit {
9 atoms: Vec<AtomTextEdit>,
10}
11
12#[derive(Debug, Default)]
13pub struct TextEditBuilder {
14 atoms: Vec<AtomTextEdit>,
15}
16
17impl TextEditBuilder {
18 pub fn replace(&mut self, range: TextRange, replace_with: String) {
19 self.atoms.push(AtomTextEdit::replace(range, replace_with))
20 }
21 pub fn delete(&mut self, range: TextRange) {
22 self.atoms.push(AtomTextEdit::delete(range))
23 }
24 pub fn insert(&mut self, offset: TextSize, text: String) {
25 self.atoms.push(AtomTextEdit::insert(offset, text))
26 }
27 pub fn finish(self) -> TextEdit {
28 TextEdit::from_atoms(self.atoms)
29 }
30 pub fn invalidates_offset(&self, offset: TextSize) -> bool {
31 self.atoms.iter().any(|atom| atom.delete.contains_inclusive(offset))
32 }
33}
34
35impl TextEdit {
36 pub fn insert(offset: TextSize, text: String) -> TextEdit {
37 let mut builder = TextEditBuilder::default();
38 builder.insert(offset, text);
39 builder.finish()
40 }
41
42 pub fn delete(range: TextRange) -> TextEdit {
43 let mut builder = TextEditBuilder::default();
44 builder.delete(range);
45 builder.finish()
46 }
47
48 pub fn replace(range: TextRange, replace_with: String) -> TextEdit {
49 let mut builder = TextEditBuilder::default();
50 builder.replace(range, replace_with);
51 builder.finish()
52 }
53
54 pub(crate) fn from_atoms(mut atoms: Vec<AtomTextEdit>) -> TextEdit {
55 atoms.sort_by_key(|a| (a.delete.start(), a.delete.end()));
56 for (a1, a2) in atoms.iter().zip(atoms.iter().skip(1)) {
57 assert!(a1.delete.end() <= a2.delete.start())
58 }
59 TextEdit { atoms }
60 }
61
62 pub fn as_atoms(&self) -> &[AtomTextEdit] {
63 &self.atoms
64 }
65
66 pub fn apply(&self, text: &str) -> String {
67 let mut total_len = TextSize::of(text);
68 for atom in self.atoms.iter() {
69 total_len += TextSize::of(&atom.insert);
70 total_len -= atom.delete.end() - atom.delete.start();
71 }
72 let mut buf = String::with_capacity(total_len.into());
73 let mut prev = 0;
74 for atom in self.atoms.iter() {
75 let start: usize = atom.delete.start().into();
76 let end: usize = atom.delete.end().into();
77 if start > prev {
78 buf.push_str(&text[prev..start]);
79 }
80 buf.push_str(&atom.insert);
81 prev = end;
82 }
83 buf.push_str(&text[prev..text.len()]);
84 assert_eq!(TextSize::of(&buf), total_len);
85 buf
86 }
87
88 pub fn apply_to_offset(&self, offset: TextSize) -> Option<TextSize> {
89 let mut res = offset;
90 for atom in self.atoms.iter() {
91 if atom.delete.start() >= offset {
92 break;
93 }
94 if offset < atom.delete.end() {
95 return None;
96 }
97 res += TextSize::of(&atom.insert);
98 res -= atom.delete.len();
99 }
100 Some(res)
101 }
102}
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-29 05:58:01 +0100