1 //! Renderer for `struct` literal.
3 use hir::{db::HirDatabase, HasAttrs, HasVisibility, Name, StructKind};
4 use ide_db::helpers::SnippetCap;
5 use itertools::Itertools;
7 use crate::{item::CompletionKind, render::RenderContext, CompletionItem, CompletionItemKind};
9 pub(crate) fn render_struct_literal(
10 ctx: RenderContext<'_>,
12 local_name: Option<Name>,
13 ) -> Option<CompletionItem> {
14 let _p = profile::span("render_struct_literal");
16 let fields = strukt.fields(ctx.db());
17 let (visible_fields, fields_omitted) = visible_fields(&ctx, &fields, strukt)?;
20 // If some fields are private you can't make `struct` literal.
24 let name = local_name.unwrap_or_else(|| strukt.name(ctx.db())).to_string();
25 let literal = render_literal(&ctx, &name, strukt.kind(ctx.db()), &visible_fields)?;
27 Some(build_completion(ctx, name, literal, strukt))
31 ctx: RenderContext<'_>,
34 def: impl HasAttrs + Copy,
36 let mut item = CompletionItem::new(CompletionKind::Snippet, ctx.source_range(), name + " {…}");
37 item.kind(CompletionItemKind::Snippet)
38 .set_documentation(ctx.docs(def))
39 .set_deprecated(ctx.is_deprecated(def))
41 match ctx.snippet_cap() {
42 Some(snippet_cap) => item.insert_snippet(snippet_cap, literal),
43 None => item.insert_text(literal),
49 ctx: &RenderContext<'_>,
52 fields: &[hir::Field],
54 let mut literal = match kind {
55 StructKind::Tuple if ctx.snippet_cap().is_some() => render_tuple_as_literal(fields, name),
56 StructKind::Record => render_record_as_literal(ctx.db(), ctx.snippet_cap(), fields, name),
60 if ctx.snippet_cap().is_some() {
61 literal.push_str("$0");
66 fn render_record_as_literal(
68 snippet_cap: Option<SnippetCap>,
69 fields: &[hir::Field],
72 let fields = fields.iter();
73 if snippet_cap.is_some() {
78 .map(|(idx, field)| format!("{}: ${{{}:()}}", field.name(db), idx + 1))
85 fields.map(|field| format!("{}: ()", field.name(db))).format(", "),
91 fn render_tuple_as_literal(fields: &[hir::Field], name: &str) -> String {
94 fields.iter().enumerate().map(|(idx, _)| format!("${}", idx + 1)).format(", "),
100 ctx: &RenderContext<'_>,
101 fields: &[hir::Field],
103 ) -> Option<(Vec<hir::Field>, bool)> {
104 let module = ctx.completion.scope.module()?;
105 let n_fields = fields.len();
108 .filter(|field| field.is_visible_from(ctx.db(), module))
110 .collect::<Vec<_>>();
113 n_fields - fields.len() > 0 || item.attrs(ctx.db()).by_key("non_exhaustive").exists();
114 Some((fields, fields_omitted))