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-rw-r--r--crates/completion/src/completions/pattern.rs57
-rw-r--r--crates/completion/src/context.rs3
2 files changed, 46 insertions, 14 deletions
diff --git a/crates/completion/src/completions/pattern.rs b/crates/completion/src/completions/pattern.rs
index 7ab7f09fe..4f63ff0ef 100644
--- a/crates/completion/src/completions/pattern.rs
+++ b/crates/completion/src/completions/pattern.rs
@@ -4,7 +4,7 @@ use crate::{CompletionContext, Completions};
4 4
5/// Completes constats and paths in patterns. 5/// Completes constats and paths in patterns.
6pub(crate) fn complete_pattern(acc: &mut Completions, ctx: &CompletionContext) { 6pub(crate) fn complete_pattern(acc: &mut Completions, ctx: &CompletionContext) {
7 if !ctx.is_pat_binding_or_const { 7 if !(ctx.is_pat_binding_or_const || ctx.is_irrefutable_let_pat_binding) {
8 return; 8 return;
9 } 9 }
10 if ctx.record_pat_syntax.is_some() { 10 if ctx.record_pat_syntax.is_some() {
@@ -14,20 +14,27 @@ pub(crate) fn complete_pattern(acc: &mut Completions, ctx: &CompletionContext) {
14 // FIXME: ideally, we should look at the type we are matching against and 14 // FIXME: ideally, we should look at the type we are matching against and
15 // suggest variants + auto-imports 15 // suggest variants + auto-imports
16 ctx.scope.process_all_names(&mut |name, res| { 16 ctx.scope.process_all_names(&mut |name, res| {
17 match &res { 17 let add_resolution = match &res {
18 hir::ScopeDef::ModuleDef(def) => match def { 18 hir::ScopeDef::ModuleDef(def) => {
19 hir::ModuleDef::Adt(hir::Adt::Enum(..)) 19 if ctx.is_irrefutable_let_pat_binding {
20 | hir::ModuleDef::Adt(hir::Adt::Struct(..)) 20 matches!(def, hir::ModuleDef::Adt(hir::Adt::Struct(_)))
21 | hir::ModuleDef::EnumVariant(..) 21 } else {
22 | hir::ModuleDef::Const(..) 22 matches!(
23 | hir::ModuleDef::Module(..) => (), 23 def,
24 _ => return, 24 hir::ModuleDef::Adt(hir::Adt::Enum(..))
25 }, 25 | hir::ModuleDef::Adt(hir::Adt::Struct(..))
26 hir::ScopeDef::MacroDef(_) => (), 26 | hir::ModuleDef::EnumVariant(..)
27 _ => return, 27 | hir::ModuleDef::Const(..)
28 | hir::ModuleDef::Module(..)
29 )
30 }
31 }
32 hir::ScopeDef::MacroDef(_) => true,
33 _ => false,
28 }; 34 };
29 35 if add_resolution {
30 acc.add_resolution(ctx, name.to_string(), &res) 36 acc.add_resolution(ctx, name.to_string(), &res);
37 }
31 }); 38 });
32} 39}
33 40
@@ -85,4 +92,26 @@ fn foo() {
85 "#]], 92 "#]],
86 ); 93 );
87 } 94 }
95
96 #[test]
97 fn completes_in_irrefutable_let() {
98 check(
99 r#"
100enum E { X }
101use self::E::X;
102const Z: E = E::X;
103mod m {}
104
105static FOO: E = E::X;
106struct Bar { f: u32 }
107
108fn foo() {
109 let <|>
110}
111"#,
112 expect![[r#"
113 st Bar
114 "#]],
115 );
116 }
88} 117}
diff --git a/crates/completion/src/context.rs b/crates/completion/src/context.rs
index bf70ee478..5cd11cf77 100644
--- a/crates/completion/src/context.rs
+++ b/crates/completion/src/context.rs
@@ -51,6 +51,7 @@ pub(crate) struct CompletionContext<'a> {
51 /// If a name-binding or reference to a const in a pattern. 51 /// If a name-binding or reference to a const in a pattern.
52 /// Irrefutable patterns (like let) are excluded. 52 /// Irrefutable patterns (like let) are excluded.
53 pub(super) is_pat_binding_or_const: bool, 53 pub(super) is_pat_binding_or_const: bool,
54 pub(super) is_irrefutable_let_pat_binding: bool,
54 /// A single-indent path, like `foo`. `::foo` should not be considered a trivial path. 55 /// A single-indent path, like `foo`. `::foo` should not be considered a trivial path.
55 pub(super) is_trivial_path: bool, 56 pub(super) is_trivial_path: bool,
56 /// If not a trivial path, the prefix (qualifier). 57 /// If not a trivial path, the prefix (qualifier).
@@ -146,6 +147,7 @@ impl<'a> CompletionContext<'a> {
146 active_parameter: ActiveParameter::at(db, position), 147 active_parameter: ActiveParameter::at(db, position),
147 is_param: false, 148 is_param: false,
148 is_pat_binding_or_const: false, 149 is_pat_binding_or_const: false,
150 is_irrefutable_let_pat_binding: false,
149 is_trivial_path: false, 151 is_trivial_path: false,
150 path_qual: None, 152 path_qual: None,
151 after_if: false, 153 after_if: false,
@@ -330,6 +332,7 @@ impl<'a> CompletionContext<'a> {
330 if pat.syntax().text_range().contains_range(bind_pat.syntax().text_range()) 332 if pat.syntax().text_range().contains_range(bind_pat.syntax().text_range())
331 { 333 {
332 self.is_pat_binding_or_const = false; 334 self.is_pat_binding_or_const = false;
335 self.is_irrefutable_let_pat_binding = true;
333 } 336 }
334 } 337 }
335 } 338 }