1 //! `render` module provides utilities for rendering completion suggestions
2 //! into code pieces that will be presented to user.
5 pub(crate) mod function;
7 pub(crate) mod pattern;
8 pub(crate) mod type_alias;
9 pub(crate) mod variant;
10 pub(crate) mod union_literal;
11 pub(crate) mod literal;
13 use hir::{AsAssocItem, HasAttrs, HirDisplay, ScopeDef};
15 helpers::item_name, imports::import_assets::LocatedImport, RootDatabase, SnippetCap, SymbolKind,
17 use syntax::{AstNode, SmolStr, SyntaxKind, TextRange};
20 context::{DotAccess, PathCompletionCtx, PathKind, PatternContext},
21 item::{Builder, CompletionRelevanceTypeMatch},
24 literal::render_variant_lit,
25 macro_::{render_macro, render_macro_pat},
27 CompletionContext, CompletionItem, CompletionItemKind, CompletionRelevance,
29 /// Interface for data and methods required for items rendering.
30 #[derive(Debug, Clone)]
31 pub(crate) struct RenderContext<'a> {
32 completion: &'a CompletionContext<'a>,
33 is_private_editable: bool,
34 import_to_add: Option<LocatedImport>,
37 impl<'a> RenderContext<'a> {
38 pub(crate) fn new(completion: &'a CompletionContext<'a>) -> RenderContext<'a> {
39 RenderContext { completion, is_private_editable: false, import_to_add: None }
42 pub(crate) fn private_editable(mut self, private_editable: bool) -> Self {
43 self.is_private_editable = private_editable;
47 pub(crate) fn import_to_add(mut self, import_to_add: Option<LocatedImport>) -> Self {
48 self.import_to_add = import_to_add;
52 fn snippet_cap(&self) -> Option<SnippetCap> {
53 self.completion.config.snippet_cap
56 fn db(&self) -> &'a RootDatabase {
60 fn source_range(&self) -> TextRange {
61 self.completion.source_range()
64 fn completion_relevance(&self) -> CompletionRelevance {
66 is_private_editable: self.is_private_editable,
67 requires_import: self.import_to_add.is_some(),
72 fn is_immediately_after_macro_bang(&self) -> bool {
73 self.completion.token.kind() == SyntaxKind::BANG
78 .map_or(false, |it| it.kind() == SyntaxKind::MACRO_CALL)
81 fn is_deprecated(&self, def: impl HasAttrs) -> bool {
82 let attrs = def.attrs(self.db());
83 attrs.by_key("deprecated").exists()
86 fn is_deprecated_assoc_item(&self, as_assoc_item: impl AsAssocItem) -> bool {
88 let assoc = match as_assoc_item.as_assoc_item(db) {
93 let is_assoc_deprecated = match assoc {
94 hir::AssocItem::Function(it) => self.is_deprecated(it),
95 hir::AssocItem::Const(it) => self.is_deprecated(it),
96 hir::AssocItem::TypeAlias(it) => self.is_deprecated(it),
100 .containing_trait_or_trait_impl(db)
101 .map(|trait_| self.is_deprecated(trait_))
105 // FIXME: remove this
106 fn docs(&self, def: impl HasAttrs) -> Option<hir::Documentation> {
111 pub(crate) fn render_field(
112 ctx: RenderContext<'_>,
113 dot_access: &DotAccess,
114 receiver: Option<hir::Name>,
117 ) -> CompletionItem {
118 let is_deprecated = ctx.is_deprecated(field);
119 let name = field.name(ctx.db());
120 let (name, escaped_name) = (name.to_smol_str(), name.escaped().to_smol_str());
121 let mut item = CompletionItem::new(
124 receiver.map_or_else(|| name.clone(), |receiver| format!("{}.{}", receiver, name).into()),
126 item.set_relevance(CompletionRelevance {
127 type_match: compute_type_match(ctx.completion, ty),
128 exact_name_match: compute_exact_name_match(ctx.completion, name.as_str()),
129 ..CompletionRelevance::default()
131 item.detail(ty.display(ctx.db()).to_string())
132 .set_documentation(field.docs(ctx.db()))
133 .set_deprecated(is_deprecated)
134 .lookup_by(name.clone());
135 item.insert_text(escaped_name);
136 if let Some(receiver) = &dot_access.receiver {
137 if let Some(original) = ctx.completion.sema.original_ast_node(receiver.clone()) {
138 if let Some(ref_match) = compute_ref_match(ctx.completion, ty) {
139 item.ref_match(ref_match, original.syntax().text_range().start());
146 pub(crate) fn render_tuple_field(
147 ctx: RenderContext<'_>,
148 receiver: Option<hir::Name>,
151 ) -> CompletionItem {
152 let mut item = CompletionItem::new(
155 receiver.map_or_else(|| field.to_string(), |receiver| format!("{}.{}", receiver, field)),
157 item.detail(ty.display(ctx.db()).to_string()).lookup_by(field.to_string());
161 pub(crate) fn render_type_inference(ty_string: String, ctx: &CompletionContext) -> CompletionItem {
163 CompletionItem::new(CompletionItemKind::InferredType, ctx.source_range(), ty_string);
164 builder.set_relevance(CompletionRelevance { is_definite: true, ..Default::default() });
168 pub(crate) fn render_path_resolution(
169 ctx: RenderContext<'_>,
170 path_ctx: &PathCompletionCtx,
171 local_name: hir::Name,
172 resolution: ScopeDef,
174 render_resolution_path(ctx, path_ctx, local_name, None, resolution)
177 pub(crate) fn render_pattern_resolution(
178 ctx: RenderContext<'_>,
179 pattern_ctx: &PatternContext,
180 local_name: hir::Name,
181 resolution: ScopeDef,
183 render_resolution_pat(ctx, pattern_ctx, local_name, None, resolution)
186 pub(crate) fn render_resolution_with_import(
187 ctx: RenderContext<'_>,
188 path_ctx: &PathCompletionCtx,
189 import_edit: LocatedImport,
190 ) -> Option<Builder> {
191 let resolution = ScopeDef::from(import_edit.original_item);
192 let local_name = scope_def_to_name(resolution, &ctx, &import_edit)?;
194 Some(render_resolution_path(ctx, path_ctx, local_name, Some(import_edit), resolution))
197 pub(crate) fn render_resolution_with_import_pat(
198 ctx: RenderContext<'_>,
199 pattern_ctx: &PatternContext,
200 import_edit: LocatedImport,
201 ) -> Option<Builder> {
202 let resolution = ScopeDef::from(import_edit.original_item);
203 let local_name = scope_def_to_name(resolution, &ctx, &import_edit)?;
204 Some(render_resolution_pat(ctx, pattern_ctx, local_name, Some(import_edit), resolution))
207 fn scope_def_to_name(
208 resolution: ScopeDef,
210 import_edit: &LocatedImport,
211 ) -> Option<hir::Name> {
212 Some(match resolution {
213 ScopeDef::ModuleDef(hir::ModuleDef::Function(f)) => f.name(ctx.completion.db),
214 ScopeDef::ModuleDef(hir::ModuleDef::Const(c)) => c.name(ctx.completion.db)?,
215 ScopeDef::ModuleDef(hir::ModuleDef::TypeAlias(t)) => t.name(ctx.completion.db),
216 _ => item_name(ctx.db(), import_edit.original_item)?,
220 fn render_resolution_pat(
221 ctx: RenderContext<'_>,
222 pattern_ctx: &PatternContext,
223 local_name: hir::Name,
224 import_to_add: Option<LocatedImport>,
225 resolution: ScopeDef,
227 let _p = profile::span("render_resolution");
228 use hir::ModuleDef::*;
231 ScopeDef::ModuleDef(Macro(mac)) => {
232 let ctx = ctx.import_to_add(import_to_add);
233 return render_macro_pat(ctx, pattern_ctx, local_name, mac);
238 render_resolution_simple_(ctx, &local_name, import_to_add, resolution)
241 fn render_resolution_path(
242 ctx: RenderContext<'_>,
243 path_ctx: &PathCompletionCtx,
244 local_name: hir::Name,
245 import_to_add: Option<LocatedImport>,
246 resolution: ScopeDef,
248 let _p = profile::span("render_resolution");
249 use hir::ModuleDef::*;
252 ScopeDef::ModuleDef(Macro(mac)) => {
253 let ctx = ctx.import_to_add(import_to_add);
254 return render_macro(ctx, path_ctx, local_name, mac);
256 ScopeDef::ModuleDef(Function(func)) => {
257 let ctx = ctx.import_to_add(import_to_add);
258 return render_fn(ctx, path_ctx, Some(local_name), func);
260 ScopeDef::ModuleDef(Variant(var)) => {
261 let ctx = ctx.clone().import_to_add(import_to_add.clone());
263 render_variant_lit(ctx, path_ctx, Some(local_name.clone()), var, None)
271 let completion = ctx.completion;
272 let cap = ctx.snippet_cap();
273 let db = completion.db;
274 let config = completion.config;
276 let name = local_name.to_smol_str();
277 let mut item = render_resolution_simple_(ctx, &local_name, import_to_add, resolution);
278 if local_name.escaped().is_escaped() {
279 item.insert_text(local_name.escaped().to_smol_str());
281 // Add `<>` for generic types
282 let type_path_no_ty_args = matches!(
284 PathCompletionCtx { kind: PathKind::Type { .. }, has_type_args: false, .. }
285 ) && config.callable.is_some();
286 if type_path_no_ty_args {
287 if let Some(cap) = cap {
288 let has_non_default_type_params = match resolution {
289 ScopeDef::ModuleDef(hir::ModuleDef::Adt(it)) => it.has_non_default_type_params(db),
290 ScopeDef::ModuleDef(hir::ModuleDef::TypeAlias(it)) => {
291 it.has_non_default_type_params(db)
296 if has_non_default_type_params {
297 cov_mark::hit!(inserts_angle_brackets_for_generics);
298 item.lookup_by(name.clone())
299 .label(SmolStr::from_iter([&name, "<…>"]))
301 .insert_snippet(cap, format!("{}<$0>", local_name.escaped()));
305 if let ScopeDef::Local(local) = resolution {
306 let ty = local.ty(db);
307 if !ty.is_unknown() {
308 item.detail(ty.display(db).to_string());
311 item.set_relevance(CompletionRelevance {
312 type_match: compute_type_match(completion, &ty),
313 exact_name_match: compute_exact_name_match(completion, &name),
315 ..CompletionRelevance::default()
318 if let Some(ref_match) = compute_ref_match(completion, &ty) {
319 item.ref_match(ref_match, path_ctx.path.syntax().text_range().start());
325 fn render_resolution_simple_(
326 ctx: RenderContext<'_>,
327 local_name: &hir::Name,
328 import_to_add: Option<LocatedImport>,
329 resolution: ScopeDef,
331 let _p = profile::span("render_resolution");
334 let ctx = ctx.import_to_add(import_to_add);
335 let kind = res_to_kind(resolution);
337 let mut item = CompletionItem::new(kind, ctx.source_range(), local_name.to_smol_str());
338 item.set_relevance(ctx.completion_relevance())
339 .set_documentation(scope_def_docs(db, resolution))
340 .set_deprecated(scope_def_is_deprecated(&ctx, resolution));
342 if let Some(import_to_add) = ctx.import_to_add {
343 item.add_import(import_to_add);
348 fn res_to_kind(resolution: ScopeDef) -> CompletionItemKind {
349 use hir::ModuleDef::*;
351 ScopeDef::Unknown => CompletionItemKind::UnresolvedReference,
352 ScopeDef::ModuleDef(Function(_)) => CompletionItemKind::SymbolKind(SymbolKind::Function),
353 ScopeDef::ModuleDef(Variant(_)) => CompletionItemKind::SymbolKind(SymbolKind::Variant),
354 ScopeDef::ModuleDef(Macro(_)) => CompletionItemKind::SymbolKind(SymbolKind::Macro),
355 ScopeDef::ModuleDef(Module(..)) => CompletionItemKind::SymbolKind(SymbolKind::Module),
356 ScopeDef::ModuleDef(Adt(adt)) => CompletionItemKind::SymbolKind(match adt {
357 hir::Adt::Struct(_) => SymbolKind::Struct,
358 hir::Adt::Union(_) => SymbolKind::Union,
359 hir::Adt::Enum(_) => SymbolKind::Enum,
361 ScopeDef::ModuleDef(Const(..)) => CompletionItemKind::SymbolKind(SymbolKind::Const),
362 ScopeDef::ModuleDef(Static(..)) => CompletionItemKind::SymbolKind(SymbolKind::Static),
363 ScopeDef::ModuleDef(Trait(..)) => CompletionItemKind::SymbolKind(SymbolKind::Trait),
364 ScopeDef::ModuleDef(TypeAlias(..)) => CompletionItemKind::SymbolKind(SymbolKind::TypeAlias),
365 ScopeDef::ModuleDef(BuiltinType(..)) => CompletionItemKind::BuiltinType,
366 ScopeDef::GenericParam(param) => CompletionItemKind::SymbolKind(match param {
367 hir::GenericParam::TypeParam(_) => SymbolKind::TypeParam,
368 hir::GenericParam::ConstParam(_) => SymbolKind::ConstParam,
369 hir::GenericParam::LifetimeParam(_) => SymbolKind::LifetimeParam,
371 ScopeDef::Local(..) => CompletionItemKind::SymbolKind(SymbolKind::Local),
372 ScopeDef::Label(..) => CompletionItemKind::SymbolKind(SymbolKind::Label),
373 ScopeDef::AdtSelfType(..) | ScopeDef::ImplSelfType(..) => {
374 CompletionItemKind::SymbolKind(SymbolKind::SelfParam)
379 fn scope_def_docs(db: &RootDatabase, resolution: ScopeDef) -> Option<hir::Documentation> {
380 use hir::ModuleDef::*;
382 ScopeDef::ModuleDef(Module(it)) => it.docs(db),
383 ScopeDef::ModuleDef(Adt(it)) => it.docs(db),
384 ScopeDef::ModuleDef(Variant(it)) => it.docs(db),
385 ScopeDef::ModuleDef(Const(it)) => it.docs(db),
386 ScopeDef::ModuleDef(Static(it)) => it.docs(db),
387 ScopeDef::ModuleDef(Trait(it)) => it.docs(db),
388 ScopeDef::ModuleDef(TypeAlias(it)) => it.docs(db),
393 fn scope_def_is_deprecated(ctx: &RenderContext<'_>, resolution: ScopeDef) -> bool {
395 ScopeDef::ModuleDef(it) => ctx.is_deprecated_assoc_item(it),
396 ScopeDef::GenericParam(it) => ctx.is_deprecated(it),
397 ScopeDef::AdtSelfType(it) => ctx.is_deprecated(it),
402 fn compute_type_match(
403 ctx: &CompletionContext,
404 completion_ty: &hir::Type,
405 ) -> Option<CompletionRelevanceTypeMatch> {
406 let expected_type = ctx.expected_type.as_ref()?;
408 // We don't ever consider unit type to be an exact type match, since
409 // nearly always this is not meaningful to the user.
410 if expected_type.is_unit() {
414 if completion_ty == expected_type {
415 Some(CompletionRelevanceTypeMatch::Exact)
416 } else if expected_type.could_unify_with(ctx.db, completion_ty) {
417 Some(CompletionRelevanceTypeMatch::CouldUnify)
423 fn compute_exact_name_match(ctx: &CompletionContext, completion_name: &str) -> bool {
424 ctx.expected_name.as_ref().map_or(false, |name| name.text() == completion_name)
427 fn compute_ref_match(
428 ctx: &CompletionContext,
429 completion_ty: &hir::Type,
430 ) -> Option<hir::Mutability> {
431 let expected_type = ctx.expected_type.as_ref()?;
432 if completion_ty != expected_type {
433 let expected_type_without_ref = expected_type.remove_ref()?;
434 if completion_ty.autoderef(ctx.db).any(|deref_ty| deref_ty == expected_type_without_ref) {
435 cov_mark::hit!(suggest_ref);
436 let mutability = if expected_type.is_mutable_reference() {
439 hir::Mutability::Shared
441 return Some(mutability);
451 use expect_test::{expect, Expect};
452 use ide_db::SymbolKind;
453 use itertools::Itertools;
456 item::CompletionRelevanceTypeMatch,
457 tests::{check_edit, do_completion, get_all_items, TEST_CONFIG},
458 CompletionItem, CompletionItemKind, CompletionRelevance, CompletionRelevancePostfixMatch,
462 fn check(ra_fixture: &str, kind: impl Into<CompletionItemKind>, expect: Expect) {
463 let actual = do_completion(ra_fixture, kind.into());
464 expect.assert_debug_eq(&actual);
468 fn check_kinds(ra_fixture: &str, kinds: &[CompletionItemKind], expect: Expect) {
470 kinds.iter().flat_map(|&kind| do_completion(ra_fixture, kind)).collect();
471 expect.assert_debug_eq(&actual);
475 fn check_relevance_for_kinds(ra_fixture: &str, kinds: &[CompletionItemKind], expect: Expect) {
476 let mut actual = get_all_items(TEST_CONFIG, ra_fixture, None);
477 actual.retain(|it| kinds.contains(&it.kind()));
478 actual.sort_by_key(|it| cmp::Reverse(it.relevance().score()));
479 check_relevance_(actual, expect);
483 fn check_relevance(ra_fixture: &str, expect: Expect) {
484 let mut actual = get_all_items(TEST_CONFIG, ra_fixture, None);
485 actual.retain(|it| it.kind() != CompletionItemKind::Snippet);
486 actual.retain(|it| it.kind() != CompletionItemKind::Keyword);
487 actual.retain(|it| it.kind() != CompletionItemKind::BuiltinType);
488 actual.sort_by_key(|it| cmp::Reverse(it.relevance().score()));
489 check_relevance_(actual, expect);
493 fn check_relevance_(actual: Vec<CompletionItem>, expect: Expect) {
497 let mut items = vec![];
499 let tag = it.kind().tag();
500 let relevance = display_relevance(it.relevance());
501 items.push(format!("{} {} {}\n", tag, it.label(), relevance));
503 if let Some((mutability, _offset, relevance)) = it.ref_match() {
504 let label = format!("&{}{}", mutability.as_keyword_for_ref(), it.label());
505 let relevance = display_relevance(relevance);
507 items.push(format!("{} {} {}\n", tag, label, relevance));
512 .collect::<String>();
514 expect.assert_eq(&actual);
516 fn display_relevance(relevance: CompletionRelevance) -> String {
517 let relevance_factors = vec![
518 (relevance.type_match == Some(CompletionRelevanceTypeMatch::Exact), "type"),
520 relevance.type_match == Some(CompletionRelevanceTypeMatch::CouldUnify),
523 (relevance.exact_name_match, "name"),
524 (relevance.is_local, "local"),
526 relevance.postfix_match == Some(CompletionRelevancePostfixMatch::Exact),
529 (relevance.is_op_method, "op_method"),
530 (relevance.requires_import, "requires_import"),
533 .filter_map(|(cond, desc)| if cond { Some(desc) } else { None })
536 format!("[{}]", relevance_factors)
541 fn enum_detail_includes_record_fields() {
544 enum Foo { Foo { x: i32, y: i32 } }
546 fn main() { Foo::Fo$0 }
553 source_range: 54..56,
555 insert: "Foo { x: ${1:()}, y: ${2:()} }$0",
559 detail: "Foo { x: i32, y: i32 }",
567 fn enum_detail_includes_tuple_fields() {
570 enum Foo { Foo (i32, i32) }
572 fn main() { Foo::Fo$0 }
579 source_range: 46..48,
581 insert: "Foo(${1:()}, ${2:()})$0",
585 detail: "Foo(i32, i32)",
593 fn fn_detail_includes_args_and_return_type() {
596 fn foo<T>(a: u32, b: u32, t: T) -> (u32, T) { (a, t) }
600 SymbolKind::Function,
605 source_range: 68..70,
607 insert: "foo(${1:a}, ${2:b}, ${3:t})$0",
612 detail: "fn(u32, u32, T) -> (u32, T)",
613 trigger_call_info: true,
617 source_range: 68..70,
632 fn enum_detail_just_name_for_unit() {
637 fn main() { Foo::Fo$0 }
644 source_range: 35..37,
658 fn lookup_enums_by_two_qualifiers() {
662 pub enum Spam { Foo, Bar(i32) }
664 fn main() { let _: m::Spam = S$0 }
667 CompletionItemKind::SymbolKind(SymbolKind::Function),
668 CompletionItemKind::SymbolKind(SymbolKind::Module),
669 CompletionItemKind::SymbolKind(SymbolKind::Variant),
675 source_range: 75..76,
686 source_range: 75..76,
694 label: "m::Spam::Bar(…)",
695 source_range: 75..76,
697 insert: "m::Spam::Bar(${1:()})$0",
701 lookup: "Spam::Bar(…)",
702 detail: "m::Spam::Bar(i32)",
703 relevance: CompletionRelevance {
704 exact_name_match: false,
709 is_item_from_trait: false,
710 is_name_already_imported: false,
711 requires_import: false,
713 is_private_editable: false,
719 label: "m::Spam::Foo",
720 source_range: 75..76,
722 insert: "m::Spam::Foo$0",
727 detail: "m::Spam::Foo",
728 relevance: CompletionRelevance {
729 exact_name_match: false,
734 is_item_from_trait: false,
735 is_name_already_imported: false,
736 requires_import: false,
738 is_private_editable: false,
749 fn sets_deprecated_flag_in_items() {
753 fn something_deprecated() {}
757 SymbolKind::Function,
762 source_range: 56..59,
772 label: "something_deprecated()",
773 source_range: 56..59,
775 insert: "something_deprecated()$0",
779 lookup: "something_deprecated",
789 struct A { #[deprecated] the_field: u32 }
790 fn foo() { A { the$0 } }
797 source_range: 57..60,
805 relevance: CompletionRelevance {
806 exact_name_match: false,
811 is_item_from_trait: false,
812 is_name_already_imported: false,
813 requires_import: false,
815 is_private_editable: false,
835 fn bar(self) { self.$0 }
837 &[CompletionItemKind::Method, CompletionItemKind::SymbolKind(SymbolKind::Field)],
842 source_range: 94..94,
848 documentation: Documentation(
854 source_range: 94..94,
861 documentation: Documentation(
884 CompletionItemKind::SymbolKind(SymbolKind::Module),
885 CompletionItemKind::SymbolKind(SymbolKind::Variant),
886 CompletionItemKind::SymbolKind(SymbolKind::Enum),
892 source_range: 10..12,
898 documentation: Documentation(
904 source_range: 10..12,
911 documentation: Documentation(
917 source_range: 10..12,
923 documentation: Documentation(
933 fn dont_render_attrs() {
939 fn the_method(&self) { }
941 fn foo(s: S) { s.$0 }
943 CompletionItemKind::Method,
947 label: "the_method()",
948 source_range: 81..81,
950 insert: "the_method()$0",
952 lookup: "the_method",
961 fn no_call_parens_if_fn_ptr_needed() {
962 cov_mark::check!(no_call_parens_if_fn_ptr_needed);
966 fn foo(foo: u8, bar: u8) {}
967 struct ManualVtable { f: fn(u8, u8) }
969 fn main() -> ManualVtable {
970 ManualVtable { f: f$0 }
974 fn foo(foo: u8, bar: u8) {}
975 struct ManualVtable { f: fn(u8, u8) }
977 fn main() -> ManualVtable {
978 ManualVtable { f: foo }
985 struct RawIdentTable { r#type: u32 }
987 fn main() -> RawIdentTable {
988 RawIdentTable { t$0: 42 }
992 struct RawIdentTable { r#type: u32 }
994 fn main() -> RawIdentTable {
995 RawIdentTable { r#type: 42 }
1002 fn no_parens_in_use_item() {
1006 mod m { pub fn foo() {} }
1010 mod m { pub fn foo() {} }
1017 fn no_parens_in_call() {
1022 fn main() { f$0(); }
1026 fn main() { foo(); }
1033 impl Foo { fn foo(&self){} }
1034 fn f(foo: &Foo) { foo.f$0(); }
1038 impl Foo { fn foo(&self){} }
1039 fn f(foo: &Foo) { foo.foo(); }
1045 fn inserts_angle_brackets_for_generics() {
1046 cov_mark::check!(inserts_angle_brackets_for_generics);
1072 struct Vec<T = i128> {}
1076 struct Vec<T = i128> {}
1084 fn foo(xs: Ve$0<i128>)
1088 fn foo(xs: Vec<i128>)
1094 fn active_param_relevance() {
1097 struct S { foo: i64, bar: u32, baz: u32 }
1098 fn test(bar: u32) { }
1099 fn foo(s: S) { test(s.$0) }
1110 fn record_field_relevances() {
1113 struct A { foo: i64, bar: u32, baz: u32 }
1114 struct B { x: (), y: f32, bar: u32 }
1115 fn foo(a: A) { B { bar: a.$0 }; }
1126 fn record_field_and_call_relevances() {
1129 struct A { foo: i64, bar: u32, baz: u32 }
1130 struct B { x: (), y: f32, bar: u32 }
1132 fn foo(a: A) { B { bar: f(a.$0) }; }
1142 struct A { foo: i64, bar: u32, baz: u32 }
1143 struct B { x: (), y: f32, bar: u32 }
1145 fn foo(a: A) { f(B { bar: a.$0 }); }
1156 fn prioritize_exact_ref_match() {
1159 struct WorldSnapshot { _f: () };
1160 fn go(world: &WorldSnapshot) { go(w$0) }
1163 lc world [type+name+local]
1164 st WorldSnapshot {…} []
1165 st &WorldSnapshot {…} [type]
1173 fn too_many_arguments() {
1174 cov_mark::check!(too_many_arguments);
1178 fn f(foo: &Foo) { f(foo, w$0) }
1189 fn score_fn_type_and_name_match() {
1192 struct A { bar: u8 }
1193 fn baz() -> u8 { 0 }
1194 fn bar() -> u8 { 0 }
1195 fn f() { A { bar: b$0 }; }
1198 fn bar() [type+name]
1207 fn score_method_type_and_name_match() {
1213 fn aaa(&self) -> u32 { 0 }
1214 fn bbb(&self) -> u32 { 0 }
1215 fn ccc(&self) -> u64 { 0 }
1222 me aaa() [type+name]
1230 fn score_method_name_match_only() {
1236 fn aaa(&self) -> u64 { 0 }
1249 fn suggest_ref_mut() {
1250 cov_mark::check!(suggest_ref);
1254 fn foo(s: &mut S) {}
1262 lc &mut s [type+name+local]
1273 fn foo(s: &mut S) {}
1280 lc s [type+name+local]
1290 fn foo(s: &mut S) {}
1297 lc ssss [type+local]
1307 fn suggest_deref() {
1314 impl core::ops::Deref for T {
1317 fn deref(&self) -> &Self::Target {
1348 fn suggest_deref_mut() {
1351 //- minicore: deref_mut
1355 impl core::ops::Deref for T {
1358 fn deref(&self) -> &Self::Target {
1363 impl core::ops::DerefMut for T {
1364 fn deref_mut(&mut self) -> &mut Self::Target {
1369 fn foo(s: &mut S) {}
1381 lc &mut t [type+local]
1455 fn suggest_deref_fn_ret() {
1462 impl core::ops::Deref for T {
1465 fn deref(&self) -> &Self::Target {
1493 fn op_function_relevances() {
1498 fn sub(self, other: Self) -> Self { self }
1501 fn foo(a: u32) { a.$0 }
1504 me sub(…) (as Sub) [op_method]
1514 pub trait PartialEq<Rhs: ?Sized = Self> {
1515 fn eq(&self, other: &Rhs) -> bool;
1516 fn ne(&self, other: &Rhs) -> bool;
1519 impl PartialEq for Foo {}
1526 me eq(…) (as PartialEq) [op_method]
1527 me ne(…) (as PartialEq) [op_method]
1533 fn struct_field_method_ref() {
1536 struct Foo { bar: u32 }
1537 impl Foo { fn baz(&self) -> u32 { 0 } }
1539 fn foo(f: Foo) { let _: &u32 = f.b$0 }
1541 &[CompletionItemKind::Method, CompletionItemKind::SymbolKind(SymbolKind::Field)],
1546 source_range: 98..99,
1551 detail: "fn(&self) -> u32",
1556 source_range: 98..99,
1571 fn qualified_path_ref() {
1587 &[CompletionItemKind::SymbolKind(SymbolKind::Function)],
1592 source_range: 95..95,
1599 detail: "fn() -> S",
1611 enum Foo<T> { A(T), B }
1612 // bar() should not be an exact type match
1613 // because the generic parameters are different
1614 fn bar() -> Foo<u8> { Foo::B }
1615 // FIXME baz() should be an exact type match
1616 // because the types could unify, but it currently
1617 // is not. This is due to the T here being
1618 // TyKind::Placeholder rather than TyKind::Missing.
1619 fn baz<T>() -> Foo<T> { Foo::B }
1621 let foo: Foo<u32> = Foo::B;
1622 let _: Foo<u32> = f$0;
1627 ev Foo::A(…) [type_could_unify]
1628 ev Foo::B [type_could_unify]
1638 fn postfix_exact_match_is_high_priority() {
1639 cov_mark::check!(postfix_exact_match_is_high_priority);
1640 check_relevance_for_kinds(
1645 fn not(self) -> Self::Output;
1650 fn not(self) -> bool { if self { false } else { true }}
1655 let _: bool = (9 > 2).not$0;
1658 &[CompletionItemKind::Snippet, CompletionItemKind::Method],
1661 me not() (use ops::Not) [type_could_unify+requires_import]
1676 fn postfix_inexact_match_is_low_priority() {
1677 cov_mark::check!(postfix_inexact_match_is_low_priority);
1678 check_relevance_for_kinds(
1688 &[CompletionItemKind::Snippet, CompletionItemKind::Method],
1705 fn flyimport_reduced_relevance() {
1710 pub trait BufRead {}
1711 pub struct BufReader;
1712 pub struct BufWriter;
1725 tt BufRead (use std::io::BufRead) [requires_import]
1726 st BufReader (use std::io::BufReader) [requires_import]
1727 st BufWriter (use std::io::BufWriter) [requires_import]
1733 fn completes_struct_with_raw_identifier() {
1737 mod m { pub struct r#type {} }
1739 let r#type = m::t$0;
1743 mod m { pub struct r#type {} }
1745 let r#type = m::r#type;
1752 fn completes_fn_with_raw_identifier() {
1756 mod m { pub fn r#type {} }
1762 mod m { pub fn r#type {} }
1771 fn completes_macro_with_raw_identifier() {
1775 macro_rules! r#let { () => {} }
1781 macro_rules! r#let { () => {} }
1790 fn completes_variant_with_raw_identifier() {
1809 fn completes_field_with_raw_identifier() {
1814 pub struct r#struct {
1820 let a = r#type::r#struct {};
1826 pub struct r#struct {
1832 let a = r#type::r#struct {};
1840 fn completes_const_with_raw_identifier() {
1845 impl r#struct { pub const r#type: u8 = 1; }
1852 impl r#struct { pub const r#type: u8 = 1; }
1861 fn completes_type_alias_with_raw_identifier() {
1866 trait r#trait { type r#type; }
1867 impl r#trait for r#struct { type t$0 }
1871 trait r#trait { type r#type; }
1872 impl r#trait for r#struct { type r#type = $0; }