ide_completion/render/
type_alias.rs

1//! Renderer for type aliases.
2
3use hir::{AsAssocItem, HirDisplay};
4use ide_db::SymbolKind;
5use syntax::{SmolStr, ToSmolStr};
6
7use crate::{item::CompletionItem, render::RenderContext};
8
9pub(crate) fn render_type_alias(
10    ctx: RenderContext<'_, '_>,
11    type_alias: hir::TypeAlias,
12) -> Option<CompletionItem> {
13    let _p = tracing::info_span!("render_type_alias").entered();
14    render(ctx, type_alias, false)
15}
16
17pub(crate) fn render_type_alias_with_eq(
18    ctx: RenderContext<'_, '_>,
19    type_alias: hir::TypeAlias,
20) -> Option<CompletionItem> {
21    let _p = tracing::info_span!("render_type_alias_with_eq").entered();
22    render(ctx, type_alias, true)
23}
24
25fn render(
26    ctx: RenderContext<'_, '_>,
27    type_alias: hir::TypeAlias,
28    with_eq: bool,
29) -> Option<CompletionItem> {
30    let db = ctx.db();
31
32    let name = type_alias.name(db);
33    let (name, escaped_name) = if with_eq {
34        (
35            SmolStr::from_iter([&name.as_str().to_smolstr(), " = "]),
36            SmolStr::from_iter([&name.display_no_db(ctx.completion.edition).to_smolstr(), " = "]),
37        )
38    } else {
39        (name.as_str().to_smolstr(), name.display_no_db(ctx.completion.edition).to_smolstr())
40    };
41    let detail = type_alias.display(db, ctx.completion.display_target).to_string();
42
43    let mut item = CompletionItem::new(
44        SymbolKind::TypeAlias,
45        ctx.source_range(),
46        name,
47        ctx.completion.edition,
48    );
49    item.set_documentation(ctx.docs(type_alias))
50        .set_deprecated(ctx.is_deprecated(type_alias, type_alias.as_assoc_item(db)))
51        .detail(detail)
52        .set_relevance(crate::CompletionRelevance {
53            type_match: super::compute_type_match(
54                ctx.completion,
55                &ctx.completion.rebase_ty(&type_alias.ty(db)),
56            ),
57            ..ctx.completion_relevance()
58        });
59
60    if let Some(actm) = type_alias.as_assoc_item(db)
61        && let Some(trt) = actm.container_or_implemented_trait(db)
62    {
63        item.trait_name(trt.name(db).display_no_db(ctx.completion.edition).to_smolstr());
64    }
65    item.insert_text(escaped_name);
66
67    Some(item.build(ctx.db()))
68}
ide_completion/render/type_alias.rs

ide_completion/render/
type_alias.rs
