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-rw-r--r--crates/ra_ide/src/completion.rs2
-rw-r--r--crates/ra_ide/src/completion/complete_attribute.rs587
-rw-r--r--crates/ra_ide/src/completion/completion_context.rs3
-rw-r--r--crates/ra_ide/src/completion/completion_item.rs2
-rw-r--r--crates/rust-analyzer/src/conv.rs1
5 files changed, 595 insertions, 0 deletions
diff --git a/crates/ra_ide/src/completion.rs b/crates/ra_ide/src/completion.rs
index f0e02180b..4ca0fdf4f 100644
--- a/crates/ra_ide/src/completion.rs
+++ b/crates/ra_ide/src/completion.rs
@@ -5,6 +5,7 @@ mod completion_item;
5mod completion_context; 5mod completion_context;
6mod presentation; 6mod presentation;
7 7
8mod complete_attribute;
8mod complete_dot; 9mod complete_dot;
9mod complete_record; 10mod complete_record;
10mod complete_pattern; 11mod complete_pattern;
@@ -78,6 +79,7 @@ pub(crate) fn completions(
78 complete_postfix::complete_postfix(&mut acc, &ctx); 79 complete_postfix::complete_postfix(&mut acc, &ctx);
79 complete_macro_in_item_position::complete_macro_in_item_position(&mut acc, &ctx); 80 complete_macro_in_item_position::complete_macro_in_item_position(&mut acc, &ctx);
80 complete_trait_impl::complete_trait_impl(&mut acc, &ctx); 81 complete_trait_impl::complete_trait_impl(&mut acc, &ctx);
82 complete_attribute::complete_attribute(&mut acc, &ctx);
81 83
82 Some(acc) 84 Some(acc)
83} 85}
diff --git a/crates/ra_ide/src/completion/complete_attribute.rs b/crates/ra_ide/src/completion/complete_attribute.rs
new file mode 100644
index 000000000..b405042e8
--- /dev/null
+++ b/crates/ra_ide/src/completion/complete_attribute.rs
@@ -0,0 +1,587 @@
1//! Completion for attributes
2//!
3//! This module uses a bit of static metadata to provide completions
4//! for built-in attributes.
5
6use super::completion_context::CompletionContext;
7use super::completion_item::{CompletionItem, CompletionItemKind, CompletionKind, Completions};
8use ra_syntax::{
9 ast::{Attr, AttrKind},
10 AstNode,
11};
12
13pub(super) fn complete_attribute(acc: &mut Completions, ctx: &CompletionContext) {
14 if !ctx.is_attribute {
15 return;
16 }
17
18 let is_inner = ctx
19 .original_token
20 .ancestors()
21 .find_map(Attr::cast)
22 .map(|attr| attr.kind() == AttrKind::Inner)
23 .unwrap_or(false);
24
25 for attr_completion in ATTRIBUTES {
26 let mut item = CompletionItem::new(
27 CompletionKind::Attribute,
28 ctx.source_range(),
29 attr_completion.label,
30 )
31 .kind(CompletionItemKind::Attribute);
32
33 match (attr_completion.snippet, ctx.config.snippet_cap) {
34 (Some(snippet), Some(cap)) => {
35 item = item.insert_snippet(cap, snippet);
36 }
37 _ => {}
38 }
39
40 if is_inner || !attr_completion.should_be_inner {
41 acc.add(item);
42 }
43 }
44}
45
46struct AttrCompletion {
47 label: &'static str,
48 snippet: Option<&'static str>,
49 should_be_inner: bool,
50}
51
52const ATTRIBUTES: &[AttrCompletion] = &[
53 AttrCompletion { label: "allow", snippet: Some("allow(${0:lint})"), should_be_inner: false },
54 AttrCompletion {
55 label: "cfg_attr",
56 snippet: Some("cfg_attr(${1:predicate}, ${0:attr})"),
57 should_be_inner: false,
58 },
59 AttrCompletion { label: "cfg", snippet: Some("cfg(${0:predicate})"), should_be_inner: false },
60 AttrCompletion { label: "deny", snippet: Some("deny(${0:lint})"), should_be_inner: false },
61 AttrCompletion {
62 label: "deprecated",
63 snippet: Some(r#"deprecated = "${0:reason}""#),
64 should_be_inner: false,
65 },
66 AttrCompletion {
67 label: "derive",
68 snippet: Some(r#"derive(${0:Debug})"#),
69 should_be_inner: false,
70 },
71 AttrCompletion { label: "doc", snippet: Some(r#"doc = "${0:docs}""#), should_be_inner: false },
72 AttrCompletion { label: "feature", snippet: Some("feature(${0:flag})"), should_be_inner: true },
73 AttrCompletion { label: "forbid", snippet: Some("forbid(${0:lint})"), should_be_inner: false },
74 // FIXME: resolve through macro resolution?
75 AttrCompletion { label: "global_allocator", snippet: None, should_be_inner: true },
76 AttrCompletion { label: "ignore", snippet: Some("ignore(${0:lint})"), should_be_inner: false },
77 AttrCompletion { label: "inline", snippet: Some("inline(${0:lint})"), should_be_inner: false },
78 AttrCompletion {
79 label: "link_name",
80 snippet: Some(r#"link_name = "${0:symbol_name}""#),
81 should_be_inner: false,
82 },
83 AttrCompletion { label: "link", snippet: None, should_be_inner: false },
84 AttrCompletion { label: "macro_export", snippet: None, should_be_inner: false },
85 AttrCompletion { label: "macro_use", snippet: None, should_be_inner: false },
86 AttrCompletion {
87 label: "must_use",
88 snippet: Some(r#"must_use = "${0:reason}""#),
89 should_be_inner: false,
90 },
91 AttrCompletion { label: "no_mangle", snippet: None, should_be_inner: false },
92 AttrCompletion { label: "no_std", snippet: None, should_be_inner: true },
93 AttrCompletion { label: "non_exhaustive", snippet: None, should_be_inner: false },
94 AttrCompletion { label: "panic_handler", snippet: None, should_be_inner: true },
95 AttrCompletion { label: "path", snippet: Some("path =\"${0:path}\""), should_be_inner: false },
96 AttrCompletion { label: "proc_macro", snippet: None, should_be_inner: false },
97 AttrCompletion { label: "proc_macro_attribute", snippet: None, should_be_inner: false },
98 AttrCompletion {
99 label: "proc_macro_derive",
100 snippet: Some("proc_macro_derive(${0:Trait})"),
101 should_be_inner: false,
102 },
103 AttrCompletion {
104 label: "recursion_limit",
105 snippet: Some("recursion_limit = ${0:128}"),
106 should_be_inner: true,
107 },
108 AttrCompletion { label: "repr", snippet: Some("repr(${0:C})"), should_be_inner: false },
109 AttrCompletion {
110 label: "should_panic",
111 snippet: Some(r#"expected = "${0:reason}""#),
112 should_be_inner: false,
113 },
114 AttrCompletion {
115 label: "target_feature",
116 snippet: Some("target_feature = \"${0:feature}\""),
117 should_be_inner: false,
118 },
119 AttrCompletion { label: "test", snippet: None, should_be_inner: false },
120 AttrCompletion { label: "used", snippet: None, should_be_inner: false },
121 AttrCompletion { label: "warn", snippet: Some("warn(${0:lint})"), should_be_inner: false },
122 AttrCompletion {
123 label: "windows_subsystem",
124 snippet: Some(r#"windows_subsystem = "${0:subsystem}""#),
125 should_be_inner: true,
126 },
127];
128
129#[cfg(test)]
130mod tests {
131 use crate::completion::{test_utils::do_completion, CompletionItem, CompletionKind};
132 use insta::assert_debug_snapshot;
133
134 fn do_attr_completion(code: &str) -> Vec<CompletionItem> {
135 do_completion(code, CompletionKind::Attribute)
136 }
137
138 #[test]
139 fn test_attribute_completion() {
140 assert_debug_snapshot!(
141 do_attr_completion(
142 r"
143 #[<|>]
144 ",
145 ),
146 @r###"
147 [
148 CompletionItem {
149 label: "allow",
150 source_range: [19; 19),
151 delete: [19; 19),
152 insert: "allow(${0:lint})",
153 kind: Attribute,
154 },
155 CompletionItem {
156 label: "cfg",
157 source_range: [19; 19),
158 delete: [19; 19),
159 insert: "cfg(${0:predicate})",
160 kind: Attribute,
161 },
162 CompletionItem {
163 label: "cfg_attr",
164 source_range: [19; 19),
165 delete: [19; 19),
166 insert: "cfg_attr(${1:predicate}, ${0:attr})",
167 kind: Attribute,
168 },
169 CompletionItem {
170 label: "deny",
171 source_range: [19; 19),
172 delete: [19; 19),
173 insert: "deny(${0:lint})",
174 kind: Attribute,
175 },
176 CompletionItem {
177 label: "deprecated",
178 source_range: [19; 19),
179 delete: [19; 19),
180 insert: "deprecated = \"${0:reason}\"",
181 kind: Attribute,
182 },
183 CompletionItem {
184 label: "derive",
185 source_range: [19; 19),
186 delete: [19; 19),
187 insert: "derive(${0:Debug})",
188 kind: Attribute,
189 },
190 CompletionItem {
191 label: "doc",
192 source_range: [19; 19),
193 delete: [19; 19),
194 insert: "doc = \"${0:docs}\"",
195 kind: Attribute,
196 },
197 CompletionItem {
198 label: "forbid",
199 source_range: [19; 19),
200 delete: [19; 19),
201 insert: "forbid(${0:lint})",
202 kind: Attribute,
203 },
204 CompletionItem {
205 label: "ignore",
206 source_range: [19; 19),
207 delete: [19; 19),
208 insert: "ignore(${0:lint})",
209 kind: Attribute,
210 },
211 CompletionItem {
212 label: "inline",
213 source_range: [19; 19),
214 delete: [19; 19),
215 insert: "inline(${0:lint})",
216 kind: Attribute,
217 },
218 CompletionItem {
219 label: "link",
220 source_range: [19; 19),
221 delete: [19; 19),
222 insert: "link",
223 kind: Attribute,
224 },
225 CompletionItem {
226 label: "link_name",
227 source_range: [19; 19),
228 delete: [19; 19),
229 insert: "link_name = \"${0:symbol_name}\"",
230 kind: Attribute,
231 },
232 CompletionItem {
233 label: "macro_export",
234 source_range: [19; 19),
235 delete: [19; 19),
236 insert: "macro_export",
237 kind: Attribute,
238 },
239 CompletionItem {
240 label: "macro_use",
241 source_range: [19; 19),
242 delete: [19; 19),
243 insert: "macro_use",
244 kind: Attribute,
245 },
246 CompletionItem {
247 label: "must_use",
248 source_range: [19; 19),
249 delete: [19; 19),
250 insert: "must_use = \"${0:reason}\"",
251 kind: Attribute,
252 },
253 CompletionItem {
254 label: "no_mangle",
255 source_range: [19; 19),
256 delete: [19; 19),
257 insert: "no_mangle",
258 kind: Attribute,
259 },
260 CompletionItem {
261 label: "non_exhaustive",
262 source_range: [19; 19),
263 delete: [19; 19),
264 insert: "non_exhaustive",
265 kind: Attribute,
266 },
267 CompletionItem {
268 label: "path",
269 source_range: [19; 19),
270 delete: [19; 19),
271 insert: "path =\"${0:path}\"",
272 kind: Attribute,
273 },
274 CompletionItem {
275 label: "proc_macro",
276 source_range: [19; 19),
277 delete: [19; 19),
278 insert: "proc_macro",
279 kind: Attribute,
280 },
281 CompletionItem {
282 label: "proc_macro_attribute",
283 source_range: [19; 19),
284 delete: [19; 19),
285 insert: "proc_macro_attribute",
286 kind: Attribute,
287 },
288 CompletionItem {
289 label: "proc_macro_derive",
290 source_range: [19; 19),
291 delete: [19; 19),
292 insert: "proc_macro_derive(${0:Trait})",
293 kind: Attribute,
294 },
295 CompletionItem {
296 label: "repr",
297 source_range: [19; 19),
298 delete: [19; 19),
299 insert: "repr(${0:C})",
300 kind: Attribute,
301 },
302 CompletionItem {
303 label: "should_panic",
304 source_range: [19; 19),
305 delete: [19; 19),
306 insert: "expected = \"${0:reason}\"",
307 kind: Attribute,
308 },
309 CompletionItem {
310 label: "target_feature",
311 source_range: [19; 19),
312 delete: [19; 19),
313 insert: "target_feature = \"${0:feature}\"",
314 kind: Attribute,
315 },
316 CompletionItem {
317 label: "test",
318 source_range: [19; 19),
319 delete: [19; 19),
320 insert: "test",
321 kind: Attribute,
322 },
323 CompletionItem {
324 label: "used",
325 source_range: [19; 19),
326 delete: [19; 19),
327 insert: "used",
328 kind: Attribute,
329 },
330 CompletionItem {
331 label: "warn",
332 source_range: [19; 19),
333 delete: [19; 19),
334 insert: "warn(${0:lint})",
335 kind: Attribute,
336 },
337 ]
338 "###
339 );
340 }
341
342 #[test]
343 fn test_inner_attribute_completion() {
344 assert_debug_snapshot!(
345 do_attr_completion(
346 r"
347 #![<|>]
348 ",
349 ),
350 @r###"
351 [
352 CompletionItem {
353 label: "allow",
354 source_range: [20; 20),
355 delete: [20; 20),
356 insert: "allow(${0:lint})",
357 kind: Attribute,
358 },
359 CompletionItem {
360 label: "cfg",
361 source_range: [20; 20),
362 delete: [20; 20),
363 insert: "cfg(${0:predicate})",
364 kind: Attribute,
365 },
366 CompletionItem {
367 label: "cfg_attr",
368 source_range: [20; 20),
369 delete: [20; 20),
370 insert: "cfg_attr(${1:predicate}, ${0:attr})",
371 kind: Attribute,
372 },
373 CompletionItem {
374 label: "deny",
375 source_range: [20; 20),
376 delete: [20; 20),
377 insert: "deny(${0:lint})",
378 kind: Attribute,
379 },
380 CompletionItem {
381 label: "deprecated",
382 source_range: [20; 20),
383 delete: [20; 20),
384 insert: "deprecated = \"${0:reason}\"",
385 kind: Attribute,
386 },
387 CompletionItem {
388 label: "derive",
389 source_range: [20; 20),
390 delete: [20; 20),
391 insert: "derive(${0:Debug})",
392 kind: Attribute,
393 },
394 CompletionItem {
395 label: "doc",
396 source_range: [20; 20),
397 delete: [20; 20),
398 insert: "doc = \"${0:docs}\"",
399 kind: Attribute,
400 },
401 CompletionItem {
402 label: "feature",
403 source_range: [20; 20),
404 delete: [20; 20),
405 insert: "feature(${0:flag})",
406 kind: Attribute,
407 },
408 CompletionItem {
409 label: "forbid",
410 source_range: [20; 20),
411 delete: [20; 20),
412 insert: "forbid(${0:lint})",
413 kind: Attribute,
414 },
415 CompletionItem {
416 label: "global_allocator",
417 source_range: [20; 20),
418 delete: [20; 20),
419 insert: "global_allocator",
420 kind: Attribute,
421 },
422 CompletionItem {
423 label: "ignore",
424 source_range: [20; 20),
425 delete: [20; 20),
426 insert: "ignore(${0:lint})",
427 kind: Attribute,
428 },
429 CompletionItem {
430 label: "inline",
431 source_range: [20; 20),
432 delete: [20; 20),
433 insert: "inline(${0:lint})",
434 kind: Attribute,
435 },
436 CompletionItem {
437 label: "link",
438 source_range: [20; 20),
439 delete: [20; 20),
440 insert: "link",
441 kind: Attribute,
442 },
443 CompletionItem {
444 label: "link_name",
445 source_range: [20; 20),
446 delete: [20; 20),
447 insert: "link_name = \"${0:symbol_name}\"",
448 kind: Attribute,
449 },
450 CompletionItem {
451 label: "macro_export",
452 source_range: [20; 20),
453 delete: [20; 20),
454 insert: "macro_export",
455 kind: Attribute,
456 },
457 CompletionItem {
458 label: "macro_use",
459 source_range: [20; 20),
460 delete: [20; 20),
461 insert: "macro_use",
462 kind: Attribute,
463 },
464 CompletionItem {
465 label: "must_use",
466 source_range: [20; 20),
467 delete: [20; 20),
468 insert: "must_use = \"${0:reason}\"",
469 kind: Attribute,
470 },
471 CompletionItem {
472 label: "no_mangle",
473 source_range: [20; 20),
474 delete: [20; 20),
475 insert: "no_mangle",
476 kind: Attribute,
477 },
478 CompletionItem {
479 label: "no_std",
480 source_range: [20; 20),
481 delete: [20; 20),
482 insert: "no_std",
483 kind: Attribute,
484 },
485 CompletionItem {
486 label: "non_exhaustive",
487 source_range: [20; 20),
488 delete: [20; 20),
489 insert: "non_exhaustive",
490 kind: Attribute,
491 },
492 CompletionItem {
493 label: "panic_handler",
494 source_range: [20; 20),
495 delete: [20; 20),
496 insert: "panic_handler",
497 kind: Attribute,
498 },
499 CompletionItem {
500 label: "path",
501 source_range: [20; 20),
502 delete: [20; 20),
503 insert: "path =\"${0:path}\"",
504 kind: Attribute,
505 },
506 CompletionItem {
507 label: "proc_macro",
508 source_range: [20; 20),
509 delete: [20; 20),
510 insert: "proc_macro",
511 kind: Attribute,
512 },
513 CompletionItem {
514 label: "proc_macro_attribute",
515 source_range: [20; 20),
516 delete: [20; 20),
517 insert: "proc_macro_attribute",
518 kind: Attribute,
519 },
520 CompletionItem {
521 label: "proc_macro_derive",
522 source_range: [20; 20),
523 delete: [20; 20),
524 insert: "proc_macro_derive(${0:Trait})",
525 kind: Attribute,
526 },
527 CompletionItem {
528 label: "recursion_limit",
529 source_range: [20; 20),
530 delete: [20; 20),
531 insert: "recursion_limit = ${0:128}",
532 kind: Attribute,
533 },
534 CompletionItem {
535 label: "repr",
536 source_range: [20; 20),
537 delete: [20; 20),
538 insert: "repr(${0:C})",
539 kind: Attribute,
540 },
541 CompletionItem {
542 label: "should_panic",
543 source_range: [20; 20),
544 delete: [20; 20),
545 insert: "expected = \"${0:reason}\"",
546 kind: Attribute,
547 },
548 CompletionItem {
549 label: "target_feature",
550 source_range: [20; 20),
551 delete: [20; 20),
552 insert: "target_feature = \"${0:feature}\"",
553 kind: Attribute,
554 },
555 CompletionItem {
556 label: "test",
557 source_range: [20; 20),
558 delete: [20; 20),
559 insert: "test",
560 kind: Attribute,
561 },
562 CompletionItem {
563 label: "used",
564 source_range: [20; 20),
565 delete: [20; 20),
566 insert: "used",
567 kind: Attribute,
568 },
569 CompletionItem {
570 label: "warn",
571 source_range: [20; 20),
572 delete: [20; 20),
573 insert: "warn(${0:lint})",
574 kind: Attribute,
575 },
576 CompletionItem {
577 label: "windows_subsystem",
578 source_range: [20; 20),
579 delete: [20; 20),
580 insert: "windows_subsystem = \"${0:subsystem}\"",
581 kind: Attribute,
582 },
583 ]
584 "###
585 );
586 }
587}
diff --git a/crates/ra_ide/src/completion/completion_context.rs b/crates/ra_ide/src/completion/completion_context.rs
index a76d1ce45..37880448a 100644
--- a/crates/ra_ide/src/completion/completion_context.rs
+++ b/crates/ra_ide/src/completion/completion_context.rs
@@ -57,6 +57,7 @@ pub(crate) struct CompletionContext<'a> {
57 pub(super) is_macro_call: bool, 57 pub(super) is_macro_call: bool,
58 pub(super) is_path_type: bool, 58 pub(super) is_path_type: bool,
59 pub(super) has_type_args: bool, 59 pub(super) has_type_args: bool,
60 pub(super) is_attribute: bool,
60} 61}
61 62
62impl<'a> CompletionContext<'a> { 63impl<'a> CompletionContext<'a> {
@@ -113,6 +114,7 @@ impl<'a> CompletionContext<'a> {
113 is_path_type: false, 114 is_path_type: false,
114 has_type_args: false, 115 has_type_args: false,
115 dot_receiver_is_ambiguous_float_literal: false, 116 dot_receiver_is_ambiguous_float_literal: false,
117 is_attribute: false,
116 }; 118 };
117 119
118 let mut original_file = original_file.syntax().clone(); 120 let mut original_file = original_file.syntax().clone();
@@ -306,6 +308,7 @@ impl<'a> CompletionContext<'a> {
306 .and_then(|it| it.syntax().parent().and_then(ast::CallExpr::cast)) 308 .and_then(|it| it.syntax().parent().and_then(ast::CallExpr::cast))
307 .is_some(); 309 .is_some();
308 self.is_macro_call = path.syntax().parent().and_then(ast::MacroCall::cast).is_some(); 310 self.is_macro_call = path.syntax().parent().and_then(ast::MacroCall::cast).is_some();
311 self.is_attribute = path.syntax().parent().and_then(ast::Attr::cast).is_some();
309 312
310 self.is_path_type = path.syntax().parent().and_then(ast::PathType::cast).is_some(); 313 self.is_path_type = path.syntax().parent().and_then(ast::PathType::cast).is_some();
311 self.has_type_args = segment.type_arg_list().is_some(); 314 self.has_type_args = segment.type_arg_list().is_some();
diff --git a/crates/ra_ide/src/completion/completion_item.rs b/crates/ra_ide/src/completion/completion_item.rs
index fb06cc125..5936fb8f7 100644
--- a/crates/ra_ide/src/completion/completion_item.rs
+++ b/crates/ra_ide/src/completion/completion_item.rs
@@ -121,6 +121,7 @@ pub enum CompletionItemKind {
121 Method, 121 Method,
122 TypeParam, 122 TypeParam,
123 Macro, 123 Macro,
124 Attribute,
124} 125}
125 126
126#[derive(Debug, PartialEq, Eq, Copy, Clone)] 127#[derive(Debug, PartialEq, Eq, Copy, Clone)]
@@ -134,6 +135,7 @@ pub(crate) enum CompletionKind {
134 Snippet, 135 Snippet,
135 Postfix, 136 Postfix,
136 BuiltinType, 137 BuiltinType,
138 Attribute,
137} 139}
138 140
139#[derive(Debug, PartialEq, Eq, Copy, Clone)] 141#[derive(Debug, PartialEq, Eq, Copy, Clone)]
diff --git a/crates/rust-analyzer/src/conv.rs b/crates/rust-analyzer/src/conv.rs
index 098ee369c..2285cb1d3 100644
--- a/crates/rust-analyzer/src/conv.rs
+++ b/crates/rust-analyzer/src/conv.rs
@@ -100,6 +100,7 @@ impl Conv for CompletionItemKind {
100 CompletionItemKind::Method => Method, 100 CompletionItemKind::Method => Method,
101 CompletionItemKind::TypeParam => TypeParameter, 101 CompletionItemKind::TypeParam => TypeParameter,
102 CompletionItemKind::Macro => Method, 102 CompletionItemKind::Macro => Method,
103 CompletionItemKind::Attribute => EnumMember,
103 } 104 }
104 } 105 }
105} 106}