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 let app_state = cx.update(AppState::test);
38
39 cx.update(|cx| {
40 theme::init((), cx);
41 language::init(cx);
42 crate::init(cx);
43 pane::init(cx);
44 Project::init_settings(cx);
45 workspace::init_settings(cx);
46 });
47
48 let file_name = format!(
49 "file.{}",
50 language
51 .path_suffixes()
52 .first()
53 .unwrap_or(&"txt".to_string())
54 );
55
56 let mut fake_servers = language
57 .set_fake_lsp_adapter(Arc::new(FakeLspAdapter {
58 capabilities,
59 ..Default::default()
60 }))
61 .await;
62
63 let project = Project::test(app_state.fs.clone(), [], cx).await;
64 project.update(cx, |project, _| project.languages().add(Arc::new(language)));
65
66 app_state
67 .fs
68 .as_fake()
69 .insert_tree("/root", json!({ "dir": { file_name.clone(): "" }}))
70 .await;
71
72 let (window_id, workspace) = cx.add_window(|cx| Workspace::test_new(project.clone(), cx));
73 project
74 .update(cx, |project, cx| {
75 project.find_or_create_local_worktree("/root", true, cx)
76 })
77 .await
78 .unwrap();
79 cx.read(|cx| workspace.read(cx).worktree_scans_complete(cx))
80 .await;
81
82 let file = cx.read(|cx| workspace.file_project_paths(cx)[0].clone());
83 let item = workspace
84 .update(cx, |workspace, cx| {
85 workspace.open_path(file, None, true, cx)
86 })
87 .await
88 .expect("Could not open test file");
89
90 let editor = cx.update(|cx| {
91 item.act_as::<Editor>(cx)
92 .expect("Opened test file wasn't an editor")
93 });
94 editor.update(cx, |_, cx| cx.focus_self());
95
96 let lsp = fake_servers.next().await.unwrap();
97
98 Self {
99 cx: EditorTestContext {
100 cx,
101 window_id,
102 editor,
103 },
104 lsp,
105 workspace,
106 buffer_lsp_url: lsp::Url::from_file_path(format!("/root/dir/{file_name}")).unwrap(),
107 }
108 }
109
110 pub async fn new_rust(
111 capabilities: lsp::ServerCapabilities,
112 cx: &'a mut gpui::TestAppContext,
113 ) -> EditorLspTestContext<'a> {
114 let language = Language::new(
115 LanguageConfig {
116 name: "Rust".into(),
117 path_suffixes: vec!["rs".to_string()],
118 ..Default::default()
119 },
120 Some(tree_sitter_rust::language()),
121 )
122 .with_queries(LanguageQueries {
123 indents: Some(Cow::from(indoc! {r#"
124 [
125 ((where_clause) _ @end)
126 (field_expression)
127 (call_expression)
128 (assignment_expression)
129 (let_declaration)
130 (let_chain)
131 (await_expression)
132 ] @indent
133
134 (_ "[" "]" @end) @indent
135 (_ "<" ">" @end) @indent
136 (_ "{" "}" @end) @indent
137 (_ "(" ")" @end) @indent"#})),
138 brackets: Some(Cow::from(indoc! {r#"
139 ("(" @open ")" @close)
140 ("[" @open "]" @close)
141 ("{" @open "}" @close)
142 ("<" @open ">" @close)
143 ("\"" @open "\"" @close)
144 (closure_parameters "|" @open "|" @close)"#})),
145 ..Default::default()
146 })
147 .expect("Could not parse queries");
148
149 Self::new(language, capabilities, cx).await
150 }
151
152 pub async fn new_typescript(
153 capabilities: lsp::ServerCapabilities,
154 cx: &'a mut gpui::TestAppContext,
155 ) -> EditorLspTestContext<'a> {
156 let language = Language::new(
157 LanguageConfig {
158 name: "Typescript".into(),
159 path_suffixes: vec!["ts".to_string()],
160 ..Default::default()
161 },
162 Some(tree_sitter_typescript::language_typescript()),
163 )
164 .with_queries(LanguageQueries {
165 brackets: Some(Cow::from(indoc! {r#"
166 ("(" @open ")" @close)
167 ("[" @open "]" @close)
168 ("{" @open "}" @close)
169 ("<" @open ">" @close)
170 ("\"" @open "\"" @close)"#})),
171 ..Default::default()
172 })
173 .expect("Could not parse queries");
174
175 Self::new(language, capabilities, cx).await
176 }
177
178 // Constructs lsp range using a marked string with '[', ']' range delimiters
179 pub fn lsp_range(&mut self, marked_text: &str) -> lsp::Range {
180 let ranges = self.ranges(marked_text);
181 self.to_lsp_range(ranges[0].clone())
182 }
183
184 pub fn to_lsp_range(&mut self, range: Range<usize>) -> lsp::Range {
185 let snapshot = self.update_editor(|editor, cx| editor.snapshot(cx));
186 let start_point = range.start.to_point(&snapshot.buffer_snapshot);
187 let end_point = range.end.to_point(&snapshot.buffer_snapshot);
188
189 self.editor(|editor, cx| {
190 let buffer = editor.buffer().read(cx);
191 let start = point_to_lsp(
192 buffer
193 .point_to_buffer_offset(start_point, cx)
194 .unwrap()
195 .1
196 .to_point_utf16(&buffer.read(cx)),
197 );
198 let end = point_to_lsp(
199 buffer
200 .point_to_buffer_offset(end_point, cx)
201 .unwrap()
202 .1
203 .to_point_utf16(&buffer.read(cx)),
204 );
205
206 lsp::Range { start, end }
207 })
208 }
209
210 pub fn to_lsp(&mut self, offset: usize) -> lsp::Position {
211 let snapshot = self.update_editor(|editor, cx| editor.snapshot(cx));
212 let point = offset.to_point(&snapshot.buffer_snapshot);
213
214 self.editor(|editor, cx| {
215 let buffer = editor.buffer().read(cx);
216 point_to_lsp(
217 buffer
218 .point_to_buffer_offset(point, cx)
219 .unwrap()
220 .1
221 .to_point_utf16(&buffer.read(cx)),
222 )
223 })
224 }
225
226 pub fn update_workspace<F, T>(&mut self, update: F) -> T
227 where
228 F: FnOnce(&mut Workspace, &mut ViewContext<Workspace>) -> T,
229 {
230 self.workspace.update(self.cx.cx, update)
231 }
232
233 pub fn handle_request<T, F, Fut>(
234 &self,
235 mut handler: F,
236 ) -> futures::channel::mpsc::UnboundedReceiver<()>
237 where
238 T: 'static + request::Request,
239 T::Params: 'static + Send,
240 F: 'static + Send + FnMut(lsp::Url, T::Params, gpui::AsyncAppContext) -> Fut,
241 Fut: 'static + Send + Future<Output = Result<T::Result>>,
242 {
243 let url = self.buffer_lsp_url.clone();
244 self.lsp.handle_request::<T, _, _>(move |params, cx| {
245 let url = url.clone();
246 handler(url, params, cx)
247 })
248 }
249
250 pub fn notify<T: notification::Notification>(&self, params: T::Params) {
251 self.lsp.notify::<T>(params);
252 }
253}
254
255impl<'a> Deref for EditorLspTestContext<'a> {
256 type Target = EditorTestContext<'a>;
257
258 fn deref(&self) -> &Self::Target {
259 &self.cx
260 }
261}
262
263impl<'a> DerefMut for EditorLspTestContext<'a> {
264 fn deref_mut(&mut self) -> &mut Self::Target {
265 &mut self.cx
266 }
267}