1 //! This modules defines type to represent changes to the source code, that flow
2 //! from the server to the client.
4 //! It can be viewed as a dual for `AnalysisChange`.
7 collections::hash_map::Entry,
8 iter::{self, FromIterator},
11 use base_db::{AnchoredPathBuf, FileId};
12 use rustc_hash::FxHashMap;
13 use stdx::assert_never;
14 use text_edit::TextEdit;
16 #[derive(Default, Debug, Clone)]
17 pub struct SourceChange {
18 pub source_file_edits: FxHashMap<FileId, TextEdit>,
19 pub file_system_edits: Vec<FileSystemEdit>,
24 /// Creates a new SourceChange with the given label
27 source_file_edits: FxHashMap<FileId, TextEdit>,
28 file_system_edits: Vec<FileSystemEdit>,
30 SourceChange { source_file_edits, file_system_edits, is_snippet: false }
33 pub fn from_text_edit(file_id: FileId, edit: TextEdit) -> Self {
35 source_file_edits: FxHashMap::from_iter(iter::once((file_id, edit))),
40 pub fn insert_source_edit(&mut self, file_id: FileId, edit: TextEdit) {
41 match self.source_file_edits.entry(file_id) {
42 Entry::Occupied(mut entry) => {
44 entry.get_mut().union(edit).is_err(),
45 "overlapping edits for same file"
48 Entry::Vacant(entry) => {
54 pub fn push_file_system_edit(&mut self, edit: FileSystemEdit) {
55 self.file_system_edits.push(edit);
58 pub fn get_source_edit(&self, file_id: FileId) -> Option<&TextEdit> {
59 self.source_file_edits.get(&file_id)
63 impl Extend<(FileId, TextEdit)> for SourceChange {
64 fn extend<T: IntoIterator<Item = (FileId, TextEdit)>>(&mut self, iter: T) {
65 iter.into_iter().for_each(|(file_id, edit)| self.insert_source_edit(file_id, edit));
69 impl From<FxHashMap<FileId, TextEdit>> for SourceChange {
70 fn from(source_file_edits: FxHashMap<FileId, TextEdit>) -> SourceChange {
71 SourceChange { source_file_edits, file_system_edits: Vec::new(), is_snippet: false }
75 #[derive(Debug, Clone)]
76 pub enum FileSystemEdit {
77 CreateFile { dst: AnchoredPathBuf, initial_contents: String },
78 MoveFile { src: FileId, dst: AnchoredPathBuf },
81 impl From<FileSystemEdit> for SourceChange {
82 fn from(edit: FileSystemEdit) -> SourceChange {
84 source_file_edits: Default::default(),
85 file_system_edits: vec![edit],