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-rw-r--r--crates/ide_completion/src/completions.rs10
-rw-r--r--crates/ide_completion/src/completions/unqualified_path.rs34
-rw-r--r--crates/ide_completion/src/patterns.rs7
-rw-r--r--crates/ide_completion/src/render/type_alias.rs23
4 files changed, 64 insertions, 10 deletions
diff --git a/crates/ide_completion/src/completions.rs b/crates/ide_completion/src/completions.rs
index fbd499900..bd90cefb2 100644
--- a/crates/ide_completion/src/completions.rs
+++ b/crates/ide_completion/src/completions.rs
@@ -29,7 +29,7 @@ use crate::{
29 macro_::render_macro, 29 macro_::render_macro,
30 pattern::{render_struct_pat, render_variant_pat}, 30 pattern::{render_struct_pat, render_variant_pat},
31 render_field, render_resolution, render_tuple_field, 31 render_field, render_resolution, render_tuple_field,
32 type_alias::render_type_alias, 32 type_alias::{render_type_alias, render_type_alias_with_eq},
33 RenderContext, 33 RenderContext,
34 }, 34 },
35 CompletionContext, CompletionItem, CompletionItemKind, 35 CompletionContext, CompletionItem, CompletionItemKind,
@@ -188,6 +188,14 @@ impl Completions {
188 self.add_opt(render_type_alias(RenderContext::new(ctx), type_alias)); 188 self.add_opt(render_type_alias(RenderContext::new(ctx), type_alias));
189 } 189 }
190 190
191 pub(crate) fn add_type_alias_with_eq(
192 &mut self,
193 ctx: &CompletionContext,
194 type_alias: hir::TypeAlias,
195 ) {
196 self.add_opt(render_type_alias_with_eq(RenderContext::new(ctx), type_alias));
197 }
198
191 pub(crate) fn add_qualified_enum_variant( 199 pub(crate) fn add_qualified_enum_variant(
192 &mut self, 200 &mut self,
193 ctx: &CompletionContext, 201 ctx: &CompletionContext,
diff --git a/crates/ide_completion/src/completions/unqualified_path.rs b/crates/ide_completion/src/completions/unqualified_path.rs
index b1e6b2b77..952f052a1 100644
--- a/crates/ide_completion/src/completions/unqualified_path.rs
+++ b/crates/ide_completion/src/completions/unqualified_path.rs
@@ -1,8 +1,9 @@
1//! Completion of names from the current scope, e.g. locals and imported items. 1//! Completion of names from the current scope, e.g. locals and imported items.
2 2
3use hir::ScopeDef; 3use hir::ScopeDef;
4use syntax::{ast, AstNode};
4 5
5use crate::{CompletionContext, Completions}; 6use crate::{patterns::ImmediateLocation, CompletionContext, Completions};
6 7
7pub(crate) fn complete_unqualified_path(acc: &mut Completions, ctx: &CompletionContext) { 8pub(crate) fn complete_unqualified_path(acc: &mut Completions, ctx: &CompletionContext) {
8 if ctx.is_path_disallowed() || !ctx.is_trivial_path() { 9 if ctx.is_path_disallowed() || !ctx.is_trivial_path() {
@@ -43,6 +44,20 @@ pub(crate) fn complete_unqualified_path(acc: &mut Completions, ctx: &CompletionC
43 }); 44 });
44 } 45 }
45 46
47 if let Some(ImmediateLocation::GenericArgList(arg_list)) = &ctx.completion_location {
48 if let Some(path_seg) = arg_list.syntax().parent().and_then(ast::PathSegment::cast) {
49 if let Some(hir::PathResolution::Def(hir::ModuleDef::Trait(trait_))) =
50 ctx.sema.resolve_path(&path_seg.parent_path())
51 {
52 trait_.items(ctx.sema.db).into_iter().for_each(|it| {
53 if let hir::AssocItem::TypeAlias(alias) = it {
54 acc.add_type_alias_with_eq(ctx, alias)
55 }
56 });
57 }
58 }
59 }
60
46 ctx.scope.process_all_names(&mut |name, res| { 61 ctx.scope.process_all_names(&mut |name, res| {
47 if let ScopeDef::GenericParam(hir::GenericParam::LifetimeParam(_)) = res { 62 if let ScopeDef::GenericParam(hir::GenericParam::LifetimeParam(_)) = res {
48 cov_mark::hit!(skip_lifetime_completion); 63 cov_mark::hit!(skip_lifetime_completion);
@@ -777,4 +792,21 @@ $0
777 "#]], 792 "#]],
778 ) 793 )
779 } 794 }
795
796 #[test]
797 fn completes_assoc_types_in_dynimpl_trait() {
798 check(
799 r#"
800trait Foo {
801 type Bar;
802}
803
804fn foo(_: impl Foo<B$0>) {}
805"#,
806 expect![[r#"
807 ta Bar = type Bar;
808 tt Foo
809 "#]],
810 );
811 }
780} 812}
diff --git a/crates/ide_completion/src/patterns.rs b/crates/ide_completion/src/patterns.rs
index ee87bf461..81d7a1a1d 100644
--- a/crates/ide_completion/src/patterns.rs
+++ b/crates/ide_completion/src/patterns.rs
@@ -47,6 +47,9 @@ pub(crate) enum ImmediateLocation {
47 receiver_is_ambiguous_float_literal: bool, 47 receiver_is_ambiguous_float_literal: bool,
48 }, 48 },
49 // Original file ast node 49 // Original file ast node
50 // Only set from a type arg
51 GenericArgList(ast::GenericArgList),
52 // Original file ast node
50 /// The record expr of the field name we are completing 53 /// The record expr of the field name we are completing
51 RecordExpr(ast::RecordExpr), 54 RecordExpr(ast::RecordExpr),
52 // Original file ast node 55 // Original file ast node
@@ -159,7 +162,6 @@ pub(crate) fn determine_location(
159 } 162 }
160 } 163 }
161 }; 164 };
162
163 let res = match_ast! { 165 let res = match_ast! {
164 match parent { 166 match parent {
165 ast::IdentPat(_it) => ImmediateLocation::IdentPat, 167 ast::IdentPat(_it) => ImmediateLocation::IdentPat,
@@ -174,6 +176,9 @@ pub(crate) fn determine_location(
174 Some(TRAIT) => ImmediateLocation::Trait, 176 Some(TRAIT) => ImmediateLocation::Trait,
175 _ => return None, 177 _ => return None,
176 }, 178 },
179 ast::GenericArgList(_it) => sema
180 .find_node_at_offset_with_macros(original_file, offset)
181 .map(ImmediateLocation::GenericArgList)?,
177 ast::Module(it) => { 182 ast::Module(it) => {
178 if it.item_list().is_none() { 183 if it.item_list().is_none() {
179 ImmediateLocation::ModDeclaration(it) 184 ImmediateLocation::ModDeclaration(it)
diff --git a/crates/ide_completion/src/render/type_alias.rs b/crates/ide_completion/src/render/type_alias.rs
index e47b4c745..e0234171a 100644
--- a/crates/ide_completion/src/render/type_alias.rs
+++ b/crates/ide_completion/src/render/type_alias.rs
@@ -16,7 +16,14 @@ pub(crate) fn render_type_alias<'a>(
16 ctx: RenderContext<'a>, 16 ctx: RenderContext<'a>,
17 type_alias: hir::TypeAlias, 17 type_alias: hir::TypeAlias,
18) -> Option<CompletionItem> { 18) -> Option<CompletionItem> {
19 TypeAliasRender::new(ctx, type_alias)?.render() 19 TypeAliasRender::new(ctx, type_alias)?.render(false)
20}
21
22pub(crate) fn render_type_alias_with_eq<'a>(
23 ctx: RenderContext<'a>,
24 type_alias: hir::TypeAlias,
25) -> Option<CompletionItem> {
26 TypeAliasRender::new(ctx, type_alias)?.render(true)
20} 27}
21 28
22#[derive(Debug)] 29#[derive(Debug)]
@@ -32,8 +39,14 @@ impl<'a> TypeAliasRender<'a> {
32 Some(TypeAliasRender { ctx, type_alias, ast_node }) 39 Some(TypeAliasRender { ctx, type_alias, ast_node })
33 } 40 }
34 41
35 fn render(self) -> Option<CompletionItem> { 42 fn render(self, with_eq: bool) -> Option<CompletionItem> {
36 let name = self.name()?; 43 let name = self.ast_node.name().map(|name| {
44 if with_eq {
45 format!("{} = ", name.text())
46 } else {
47 name.text().to_string()
48 }
49 })?;
37 let detail = self.detail(); 50 let detail = self.detail();
38 51
39 let mut item = 52 let mut item =
@@ -49,10 +62,6 @@ impl<'a> TypeAliasRender<'a> {
49 Some(item.build()) 62 Some(item.build())
50 } 63 }
51 64
52 fn name(&self) -> Option<String> {
53 self.ast_node.name().map(|name| name.text().to_string())
54 }
55
56 fn detail(&self) -> String { 65 fn detail(&self) -> String {
57 type_label(&self.ast_node) 66 type_label(&self.ast_node)
58 } 67 }