1use std::{
2 borrow::Cow,
3 ops::{Deref, DerefMut, Range},
4 sync::Arc,
5};
6
7use anyhow::Result;
8
9use futures::Future;
10use gpui::{json, ViewContext, ViewHandle};
11use indoc::indoc;
12use language::{point_to_lsp, FakeLspAdapter, Language, LanguageConfig, LanguageQueries};
13use lsp::{notification, request};
14use project::Project;
15use smol::stream::StreamExt;
16use workspace::{pane, AppState, Workspace, WorkspaceHandle};
17
18use crate::{multi_buffer::ToPointUtf16, Editor, ToPoint};
19
20use super::editor_test_context::EditorTestContext;
21
22pub struct EditorLspTestContext<'a> {
23 pub cx: EditorTestContext<'a>,
24 pub lsp: lsp::FakeLanguageServer,
25 pub workspace: ViewHandle<Workspace>,
26 pub buffer_lsp_url: lsp::Url,
27}
28
29impl<'a> EditorLspTestContext<'a> {
30 pub async fn new(
31 mut language: Language,
32 capabilities: lsp::ServerCapabilities,
33 cx: &'a mut gpui::TestAppContext,
34 ) -> EditorLspTestContext<'a> {
35 use json::json;
36
37 cx.update(|cx| {
38 crate::init(cx);
39 pane::init(cx);
40 });
41
42 let app_state = cx.update(AppState::test);
43
44 let file_name = format!(
45 "file.{}",
46 language
47 .path_suffixes()
48 .first()
49 .unwrap_or(&"txt".to_string())
50 );
51
52 let mut fake_servers = language
53 .set_fake_lsp_adapter(Arc::new(FakeLspAdapter {
54 capabilities,
55 ..Default::default()
56 }))
57 .await;
58
59 let project = Project::test(app_state.fs.clone(), [], cx).await;
60 project.update(cx, |project, _| project.languages().add(Arc::new(language)));
61
62 app_state
63 .fs
64 .as_fake()
65 .insert_tree("/root", json!({ "dir": { file_name.clone(): "" }}))
66 .await;
67
68 let (window_id, workspace) = cx.add_window(|cx| Workspace::test_new(project.clone(), cx));
69 project
70 .update(cx, |project, cx| {
71 project.find_or_create_local_worktree("/root", true, cx)
72 })
73 .await
74 .unwrap();
75 cx.read(|cx| workspace.read(cx).worktree_scans_complete(cx))
76 .await;
77
78 let file = cx.read(|cx| workspace.file_project_paths(cx)[0].clone());
79 let item = workspace
80 .update(cx, |workspace, cx| {
81 workspace.open_path(file, None, true, cx)
82 })
83 .await
84 .expect("Could not open test file");
85
86 let editor = cx.update(|cx| {
87 item.act_as::<Editor>(cx)
88 .expect("Opened test file wasn't an editor")
89 });
90 editor.update(cx, |_, cx| cx.focus_self());
91
92 let lsp = fake_servers.next().await.unwrap();
93
94 Self {
95 cx: EditorTestContext {
96 cx,
97 window_id,
98 editor,
99 },
100 lsp,
101 workspace,
102 buffer_lsp_url: lsp::Url::from_file_path(format!("/root/dir/{file_name}")).unwrap(),
103 }
104 }
105
106 pub async fn new_rust(
107 capabilities: lsp::ServerCapabilities,
108 cx: &'a mut gpui::TestAppContext,
109 ) -> EditorLspTestContext<'a> {
110 let language = Language::new(
111 LanguageConfig {
112 name: "Rust".into(),
113 path_suffixes: vec!["rs".to_string()],
114 ..Default::default()
115 },
116 Some(tree_sitter_rust::language()),
117 )
118 .with_queries(LanguageQueries {
119 indents: Some(Cow::from(indoc! {r#"
120 [
121 ((where_clause) _ @end)
122 (field_expression)
123 (call_expression)
124 (assignment_expression)
125 (let_declaration)
126 (let_chain)
127 (await_expression)
128 ] @indent
129
130 (_ "[" "]" @end) @indent
131 (_ "<" ">" @end) @indent
132 (_ "{" "}" @end) @indent
133 (_ "(" ")" @end) @indent"#})),
134 brackets: Some(Cow::from(indoc! {r#"
135 ("(" @open ")" @close)
136 ("[" @open "]" @close)
137 ("{" @open "}" @close)
138 ("<" @open ">" @close)
139 ("\"" @open "\"" @close)
140 (closure_parameters "|" @open "|" @close)"#})),
141 ..Default::default()
142 })
143 .expect("Could not parse queries");
144
145 Self::new(language, capabilities, cx).await
146 }
147
148 pub async fn new_typescript(
149 capabilities: lsp::ServerCapabilities,
150 cx: &'a mut gpui::TestAppContext,
151 ) -> EditorLspTestContext<'a> {
152 let language = Language::new(
153 LanguageConfig {
154 name: "Typescript".into(),
155 path_suffixes: vec!["ts".to_string()],
156 ..Default::default()
157 },
158 Some(tree_sitter_typescript::language_typescript()),
159 )
160 .with_queries(LanguageQueries {
161 brackets: Some(Cow::from(indoc! {r#"
162 ("(" @open ")" @close)
163 ("[" @open "]" @close)
164 ("{" @open "}" @close)
165 ("<" @open ">" @close)
166 ("\"" @open "\"" @close)"#})),
167 ..Default::default()
168 })
169 .expect("Could not parse queries");
170
171 Self::new(language, capabilities, cx).await
172 }
173
174 // Constructs lsp range using a marked string with '[', ']' range delimiters
175 pub fn lsp_range(&mut self, marked_text: &str) -> lsp::Range {
176 let ranges = self.ranges(marked_text);
177 self.to_lsp_range(ranges[0].clone())
178 }
179
180 pub fn to_lsp_range(&mut self, range: Range<usize>) -> lsp::Range {
181 let snapshot = self.update_editor(|editor, cx| editor.snapshot(cx));
182 let start_point = range.start.to_point(&snapshot.buffer_snapshot);
183 let end_point = range.end.to_point(&snapshot.buffer_snapshot);
184
185 self.editor(|editor, cx| {
186 let buffer = editor.buffer().read(cx);
187 let start = point_to_lsp(
188 buffer
189 .point_to_buffer_offset(start_point, cx)
190 .unwrap()
191 .1
192 .to_point_utf16(&buffer.read(cx)),
193 );
194 let end = point_to_lsp(
195 buffer
196 .point_to_buffer_offset(end_point, cx)
197 .unwrap()
198 .1
199 .to_point_utf16(&buffer.read(cx)),
200 );
201
202 lsp::Range { start, end }
203 })
204 }
205
206 pub fn to_lsp(&mut self, offset: usize) -> lsp::Position {
207 let snapshot = self.update_editor(|editor, cx| editor.snapshot(cx));
208 let point = offset.to_point(&snapshot.buffer_snapshot);
209
210 self.editor(|editor, cx| {
211 let buffer = editor.buffer().read(cx);
212 point_to_lsp(
213 buffer
214 .point_to_buffer_offset(point, cx)
215 .unwrap()
216 .1
217 .to_point_utf16(&buffer.read(cx)),
218 )
219 })
220 }
221
222 pub fn update_workspace<F, T>(&mut self, update: F) -> T
223 where
224 F: FnOnce(&mut Workspace, &mut ViewContext<Workspace>) -> T,
225 {
226 self.workspace.update(self.cx.cx, update)
227 }
228
229 pub fn handle_request<T, F, Fut>(
230 &self,
231 mut handler: F,
232 ) -> futures::channel::mpsc::UnboundedReceiver<()>
233 where
234 T: 'static + request::Request,
235 T::Params: 'static + Send,
236 F: 'static + Send + FnMut(lsp::Url, T::Params, gpui::AsyncAppContext) -> Fut,
237 Fut: 'static + Send + Future<Output = Result<T::Result>>,
238 {
239 let url = self.buffer_lsp_url.clone();
240 self.lsp.handle_request::<T, _, _>(move |params, cx| {
241 let url = url.clone();
242 handler(url, params, cx)
243 })
244 }
245
246 pub fn notify<T: notification::Notification>(&self, params: T::Params) {
247 self.lsp.notify::<T>(params);
248 }
249}
250
251impl<'a> Deref for EditorLspTestContext<'a> {
252 type Target = EditorTestContext<'a>;
253
254 fn deref(&self) -> &Self::Target {
255 &self.cx
256 }
257}
258
259impl<'a> DerefMut for EditorLspTestContext<'a> {
260 fn deref_mut(&mut self) -> &mut Self::Target {
261 &mut self.cx
262 }
263}