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-rw-r--r--crates/ide/src/completion/complete_mod.rs324
1 files changed, 0 insertions, 324 deletions
diff --git a/crates/ide/src/completion/complete_mod.rs b/crates/ide/src/completion/complete_mod.rs
deleted file mode 100644
index c7a99bdc3..000000000
--- a/crates/ide/src/completion/complete_mod.rs
+++ /dev/null
@@ -1,324 +0,0 @@
1//! Completes mod declarations.
2
3use base_db::{SourceDatabaseExt, VfsPath};
4use hir::{Module, ModuleSource};
5use ide_db::RootDatabase;
6use rustc_hash::FxHashSet;
7
8use crate::{CompletionItem, CompletionItemKind};
9
10use super::{
11 completion_context::CompletionContext, completion_item::CompletionKind,
12 completion_item::Completions,
13};
14
15/// Complete mod declaration, i.e. `mod <|> ;`
16pub(super) fn complete_mod(acc: &mut Completions, ctx: &CompletionContext) -> Option<()> {
17 let mod_under_caret = match &ctx.mod_declaration_under_caret {
18 Some(mod_under_caret) if mod_under_caret.item_list().is_some() => return None,
19 Some(mod_under_caret) => mod_under_caret,
20 None => return None,
21 };
22
23 let _p = profile::span("completion::complete_mod");
24
25 let current_module = ctx.scope.module()?;
26
27 let module_definition_file =
28 current_module.definition_source(ctx.db).file_id.original_file(ctx.db);
29 let source_root = ctx.db.source_root(ctx.db.file_source_root(module_definition_file));
30 let directory_to_look_for_submodules = directory_to_look_for_submodules(
31 current_module,
32 ctx.db,
33 source_root.path_for_file(&module_definition_file)?,
34 )?;
35
36 let existing_mod_declarations = current_module
37 .children(ctx.db)
38 .filter_map(|module| Some(module.name(ctx.db)?.to_string()))
39 .collect::<FxHashSet<_>>();
40
41 let module_declaration_file =
42 current_module.declaration_source(ctx.db).map(|module_declaration_source_file| {
43 module_declaration_source_file.file_id.original_file(ctx.db)
44 });
45
46 source_root
47 .iter()
48 .filter(|submodule_candidate_file| submodule_candidate_file != &module_definition_file)
49 .filter(|submodule_candidate_file| {
50 Some(submodule_candidate_file) != module_declaration_file.as_ref()
51 })
52 .filter_map(|submodule_file| {
53 let submodule_path = source_root.path_for_file(&submodule_file)?;
54 let directory_with_submodule = submodule_path.parent()?;
55 match submodule_path.name_and_extension()? {
56 ("lib", Some("rs")) | ("main", Some("rs")) => None,
57 ("mod", Some("rs")) => {
58 if directory_with_submodule.parent()? == directory_to_look_for_submodules {
59 match directory_with_submodule.name_and_extension()? {
60 (directory_name, None) => Some(directory_name.to_owned()),
61 _ => None,
62 }
63 } else {
64 None
65 }
66 }
67 (file_name, Some("rs"))
68 if directory_with_submodule == directory_to_look_for_submodules =>
69 {
70 Some(file_name.to_owned())
71 }
72 _ => None,
73 }
74 })
75 .filter(|name| !existing_mod_declarations.contains(name))
76 .for_each(|submodule_name| {
77 let mut label = submodule_name;
78 if mod_under_caret.semicolon_token().is_none() {
79 label.push(';')
80 }
81 acc.add(
82 CompletionItem::new(CompletionKind::Magic, ctx.source_range(), &label)
83 .kind(CompletionItemKind::Module),
84 )
85 });
86
87 Some(())
88}
89
90fn directory_to_look_for_submodules(
91 module: Module,
92 db: &RootDatabase,
93 module_file_path: &VfsPath,
94) -> Option<VfsPath> {
95 let directory_with_module_path = module_file_path.parent()?;
96 let base_directory = match module_file_path.name_and_extension()? {
97 ("mod", Some("rs")) | ("lib", Some("rs")) | ("main", Some("rs")) => {
98 Some(directory_with_module_path)
99 }
100 (regular_rust_file_name, Some("rs")) => {
101 if matches!(
102 (
103 directory_with_module_path
104 .parent()
105 .as_ref()
106 .and_then(|path| path.name_and_extension()),
107 directory_with_module_path.name_and_extension(),
108 ),
109 (Some(("src", None)), Some(("bin", None)))
110 ) {
111 // files in /src/bin/ can import each other directly
112 Some(directory_with_module_path)
113 } else {
114 directory_with_module_path.join(regular_rust_file_name)
115 }
116 }
117 _ => None,
118 }?;
119
120 let mut resulting_path = base_directory;
121 for module in module_chain_to_containing_module_file(module, db) {
122 if let Some(name) = module.name(db) {
123 resulting_path = resulting_path.join(&name.to_string())?;
124 }
125 }
126
127 Some(resulting_path)
128}
129
130fn module_chain_to_containing_module_file(
131 current_module: Module,
132 db: &RootDatabase,
133) -> Vec<Module> {
134 let mut path = Vec::new();
135
136 let mut current_module = Some(current_module);
137 while let Some(ModuleSource::Module(_)) =
138 current_module.map(|module| module.definition_source(db).value)
139 {
140 if let Some(module) = current_module {
141 path.insert(0, module);
142 current_module = module.parent(db);
143 } else {
144 current_module = None;
145 }
146 }
147
148 path
149}
150
151#[cfg(test)]
152mod tests {
153 use crate::completion::{test_utils::completion_list, CompletionKind};
154 use expect_test::{expect, Expect};
155
156 fn check(ra_fixture: &str, expect: Expect) {
157 let actual = completion_list(ra_fixture, CompletionKind::Magic);
158 expect.assert_eq(&actual);
159 }
160
161 #[test]
162 fn lib_module_completion() {
163 check(
164 r#"
165 //- /lib.rs
166 mod <|>
167 //- /foo.rs
168 fn foo() {}
169 //- /foo/ignored_foo.rs
170 fn ignored_foo() {}
171 //- /bar/mod.rs
172 fn bar() {}
173 //- /bar/ignored_bar.rs
174 fn ignored_bar() {}
175 "#,
176 expect![[r#"
177 md bar;
178 md foo;
179 "#]],
180 );
181 }
182
183 #[test]
184 fn no_module_completion_with_module_body() {
185 check(
186 r#"
187 //- /lib.rs
188 mod <|> {
189
190 }
191 //- /foo.rs
192 fn foo() {}
193 "#,
194 expect![[r#""#]],
195 );
196 }
197
198 #[test]
199 fn main_module_completion() {
200 check(
201 r#"
202 //- /main.rs
203 mod <|>
204 //- /foo.rs
205 fn foo() {}
206 //- /foo/ignored_foo.rs
207 fn ignored_foo() {}
208 //- /bar/mod.rs
209 fn bar() {}
210 //- /bar/ignored_bar.rs
211 fn ignored_bar() {}
212 "#,
213 expect![[r#"
214 md bar;
215 md foo;
216 "#]],
217 );
218 }
219
220 #[test]
221 fn main_test_module_completion() {
222 check(
223 r#"
224 //- /main.rs
225 mod tests {
226 mod <|>;
227 }
228 //- /tests/foo.rs
229 fn foo() {}
230 "#,
231 expect![[r#"
232 md foo
233 "#]],
234 );
235 }
236
237 #[test]
238 fn directly_nested_module_completion() {
239 check(
240 r#"
241 //- /lib.rs
242 mod foo;
243 //- /foo.rs
244 mod <|>;
245 //- /foo/bar.rs
246 fn bar() {}
247 //- /foo/bar/ignored_bar.rs
248 fn ignored_bar() {}
249 //- /foo/baz/mod.rs
250 fn baz() {}
251 //- /foo/moar/ignored_moar.rs
252 fn ignored_moar() {}
253 "#,
254 expect![[r#"
255 md bar
256 md baz
257 "#]],
258 );
259 }
260
261 #[test]
262 fn nested_in_source_module_completion() {
263 check(
264 r#"
265 //- /lib.rs
266 mod foo;
267 //- /foo.rs
268 mod bar {
269 mod <|>
270 }
271 //- /foo/bar/baz.rs
272 fn baz() {}
273 "#,
274 expect![[r#"
275 md baz;
276 "#]],
277 );
278 }
279
280 // FIXME binary modules are not supported in tests properly
281 // Binary modules are a bit special, they allow importing the modules from `/src/bin`
282 // and that's why are good to test two things:
283 // * no cycles are allowed in mod declarations
284 // * no modules from the parent directory are proposed
285 // Unfortunately, binary modules support is in cargo not rustc,
286 // hence the test does not work now
287 //
288 // #[test]
289 // fn regular_bin_module_completion() {
290 // check(
291 // r#"
292 // //- /src/bin.rs
293 // fn main() {}
294 // //- /src/bin/foo.rs
295 // mod <|>
296 // //- /src/bin/bar.rs
297 // fn bar() {}
298 // //- /src/bin/bar/bar_ignored.rs
299 // fn bar_ignored() {}
300 // "#,
301 // expect![[r#"
302 // md bar;
303 // "#]],foo
304 // );
305 // }
306
307 #[test]
308 fn already_declared_bin_module_completion_omitted() {
309 check(
310 r#"
311 //- /src/bin.rs crate:main
312 fn main() {}
313 //- /src/bin/foo.rs
314 mod <|>
315 //- /src/bin/bar.rs
316 mod foo;
317 fn bar() {}
318 //- /src/bin/bar/bar_ignored.rs
319 fn bar_ignored() {}
320 "#,
321 expect![[r#""#]],
322 );
323 }
324}
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